From aad5a537aca45efca82ff1eac79bf32e5547b521 Mon Sep 17 00:00:00 2001 From: Palmer Dabbelt Date: Wed, 11 Apr 2018 08:50:16 +0100 Subject: Add notrace to lib/ucmpdi2.c As part of the MIPS conversion to use the generic GCC library routines, Matt Redfearn discovered that I'd missed a notrace on __ucmpdi2(). This patch rectifies the problem. Signed-off-by: Palmer Dabbelt Reviewed-by: Matt Redfearn Signed-off-by: Matt Redfearn Cc: Ralf Baechle Cc: Matt Redfearn Cc: Antony Pavlov Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/19048/ Signed-off-by: James Hogan --- lib/ucmpdi2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib') diff --git a/lib/ucmpdi2.c b/lib/ucmpdi2.c index 25ca2d4c1e19..597998169a96 100644 --- a/lib/ucmpdi2.c +++ b/lib/ucmpdi2.c @@ -17,7 +17,7 @@ #include #include -word_type __ucmpdi2(unsigned long long a, unsigned long long b) +word_type notrace __ucmpdi2(unsigned long long a, unsigned long long b) { const DWunion au = {.ll = a}; const DWunion bu = {.ll = b}; -- cgit v1.2.3 From e3d5980568fdf83c15a5a3c8ddca1590551ab7a2 Mon Sep 17 00:00:00 2001 From: Matt Redfearn Date: Wed, 11 Apr 2018 08:50:17 +0100 Subject: lib: Rename compiler intrinsic selects to GENERIC_LIB_* When these are included into arch Kconfig files, maintaining alphabetical ordering of the selects means these get split up. To allow for keeping things tidier and alphabetical, rename the selects to GENERIC_LIB_* Signed-off-by: Matt Redfearn Acked-by: Palmer Dabbelt Cc: Antony Pavlov Cc: Ralf Baechle Cc: linux-riscv@lists.infradead.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/19049/ Signed-off-by: James Hogan --- arch/riscv/Kconfig | 6 +++--- lib/Kconfig | 12 ++++++------ lib/Makefile | 12 ++++++------ 3 files changed, 15 insertions(+), 15 deletions(-) (limited to 'lib') diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 23d8acca5c90..5287c1441d66 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -105,9 +105,9 @@ config ARCH_RV32I bool "RV32I" select CPU_SUPPORTS_32BIT_KERNEL select 32BIT - select GENERIC_ASHLDI3 - select GENERIC_ASHRDI3 - select GENERIC_LSHRDI3 + select GENERIC_LIB_ASHLDI3 + select GENERIC_LIB_ASHRDI3 + select GENERIC_LIB_LSHRDI3 config ARCH_RV64I bool "RV64I" diff --git a/lib/Kconfig b/lib/Kconfig index 5fe577673b98..09565d779324 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -604,20 +604,20 @@ config STRING_SELFTEST endmenu -config GENERIC_ASHLDI3 +config GENERIC_LIB_ASHLDI3 bool -config GENERIC_ASHRDI3 +config GENERIC_LIB_ASHRDI3 bool -config GENERIC_LSHRDI3 +config GENERIC_LIB_LSHRDI3 bool -config GENERIC_MULDI3 +config GENERIC_LIB_MULDI3 bool -config GENERIC_CMPDI2 +config GENERIC_LIB_CMPDI2 bool -config GENERIC_UCMPDI2 +config GENERIC_LIB_UCMPDI2 bool diff --git a/lib/Makefile b/lib/Makefile index ce20696d5a92..384713ff70d3 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -259,9 +259,9 @@ obj-$(CONFIG_SBITMAP) += sbitmap.o obj-$(CONFIG_PARMAN) += parman.o # GCC library routines -obj-$(CONFIG_GENERIC_ASHLDI3) += ashldi3.o -obj-$(CONFIG_GENERIC_ASHRDI3) += ashrdi3.o -obj-$(CONFIG_GENERIC_LSHRDI3) += lshrdi3.o -obj-$(CONFIG_GENERIC_MULDI3) += muldi3.o -obj-$(CONFIG_GENERIC_CMPDI2) += cmpdi2.o -obj-$(CONFIG_GENERIC_UCMPDI2) += ucmpdi2.o +obj-$(CONFIG_GENERIC_LIB_ASHLDI3) += ashldi3.o +obj-$(CONFIG_GENERIC_LIB_ASHRDI3) += ashrdi3.o +obj-$(CONFIG_GENERIC_LIB_LSHRDI3) += lshrdi3.o +obj-$(CONFIG_GENERIC_LIB_MULDI3) += muldi3.o +obj-$(CONFIG_GENERIC_LIB_CMPDI2) += cmpdi2.o +obj-$(CONFIG_GENERIC_LIB_UCMPDI2) += ucmpdi2.o -- cgit v1.2.3 From 522239b445a2de988edb81672963708a6aaf9046 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 22 May 2018 23:17:03 -0700 Subject: uio, lib: Fix CONFIG_ARCH_HAS_UACCESS_MCSAFE compilation Add a common Kconfig CONFIG_ARCH_HAS_UACCESS_MCSAFE that archs can optionally select, and fixup the declaration of _copy_to_iter_mcsafe(). Fixes: 8780356ef630 ("x86/asm/memcpy_mcsafe: Define copy_to_iter_mcsafe()") Signed-off-by: Dan Williams --- include/linux/uio.h | 2 +- lib/Kconfig | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'lib') diff --git a/include/linux/uio.h b/include/linux/uio.h index f5766e853a77..409c845d4cd3 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -155,7 +155,7 @@ size_t _copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i); #endif #ifdef CONFIG_ARCH_HAS_UACCESS_MCSAFE -size_t _copy_to_iter_mcsafe(void *addr, size_t bytes, struct iov_iter *i); +size_t _copy_to_iter_mcsafe(const void *addr, size_t bytes, struct iov_iter *i); #else #define _copy_to_iter_mcsafe _copy_to_iter #endif diff --git a/lib/Kconfig b/lib/Kconfig index 5fe577673b98..907f6e4f1cf2 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -586,6 +586,9 @@ config ARCH_HAS_PMEM_API config ARCH_HAS_UACCESS_FLUSHCACHE bool +config ARCH_HAS_UACCESS_MCSAFE + bool + config STACKDEPOT bool select STACKTRACE -- cgit v1.2.3 From 5aadfdeb8de001ca04d500586e3b033404c28617 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Mon, 28 May 2018 18:22:04 +0900 Subject: kcov: test compiler capability in Kconfig and correct dependency As Documentation/kbuild/kconfig-language.txt notes, 'select' should be be used with care - it forces a lower limit of another symbol, ignoring the dependency. Currently, KCOV can select GCC_PLUGINS even if arch does not select HAVE_GCC_PLUGINS. This could cause the unmet direct dependency. Now that Kconfig can test compiler capability, let's handle this in a more sophisticated way. There are two ways to enable KCOV; use the compiler that natively supports -fsanitize-coverage=trace-pc, or build the SANCOV plugin if the compiler has ability to build GCC plugins. Hence, the correct dependency for KCOV is: depends on CC_HAS_SANCOV_TRACE_PC || GCC_PLUGINS You do not need to build the SANCOV plugin if the compiler already supports -fsanitize-coverage=trace-pc. Hence, the select should be: select GCC_PLUGIN_SANCOV if !CC_HAS_SANCOV_TRACE_PC With this, GCC_PLUGIN_SANCOV is selected only when necessary, so scripts/Makefile.gcc-plugins can be cleaner. I also cleaned up Kconfig and scripts/Makefile.kcov as well. Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook --- Makefile | 2 +- lib/Kconfig.debug | 11 +++++++---- scripts/Makefile.gcc-plugins | 8 ++------ scripts/Makefile.kcov | 10 ++++++---- scripts/gcc-plugins/Makefile | 4 ---- 5 files changed, 16 insertions(+), 19 deletions(-) (limited to 'lib') diff --git a/Makefile b/Makefile index ca9d98b4a71b..73f0bb2c7a98 100644 --- a/Makefile +++ b/Makefile @@ -601,7 +601,7 @@ all: vmlinux CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \ $(call cc-option,-fno-tree-loop-im) \ $(call cc-disable-warning,maybe-uninitialized,) -export CFLAGS_GCOV CFLAGS_KCOV +export CFLAGS_GCOV # The arch Makefile can set ARCH_{CPP,A,C}FLAGS to override the default # values of the respective KBUILD_* variables diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index eb885942eb0f..d543c65ce0eb 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -736,12 +736,15 @@ config ARCH_HAS_KCOV only for x86_64. KCOV requires testing on other archs, and most likely disabling of instrumentation for some early boot code. +config CC_HAS_SANCOV_TRACE_PC + def_bool $(cc-option,-fsanitize-coverage=trace-pc) + config KCOV bool "Code coverage for fuzzing" depends on ARCH_HAS_KCOV + depends on CC_HAS_SANCOV_TRACE_PC || GCC_PLUGINS select DEBUG_FS - select GCC_PLUGINS if !COMPILE_TEST - select GCC_PLUGIN_SANCOV if !COMPILE_TEST + select GCC_PLUGIN_SANCOV if !CC_HAS_SANCOV_TRACE_PC help KCOV exposes kernel code coverage information in a form suitable for coverage-guided fuzzing (randomized testing). @@ -755,7 +758,7 @@ config KCOV config KCOV_ENABLE_COMPARISONS bool "Enable comparison operands collection by KCOV" depends on KCOV - default n + depends on $(cc-option,-fsanitize-coverage=trace-cmp) help KCOV also exposes operands of every comparison in the instrumented code along with operand sizes and PCs of the comparison instructions. @@ -765,7 +768,7 @@ config KCOV_ENABLE_COMPARISONS config KCOV_INSTRUMENT_ALL bool "Instrument all code by default" depends on KCOV - default y if KCOV + default y help If you are doing generic system call fuzzing (like e.g. syzkaller), then you will want to instrument the whole kernel and you should diff --git a/scripts/Makefile.gcc-plugins b/scripts/Makefile.gcc-plugins index 7f5c86246138..708c8f6a5717 100644 --- a/scripts/Makefile.gcc-plugins +++ b/scripts/Makefile.gcc-plugins @@ -14,16 +14,12 @@ ifdef CONFIG_GCC_PLUGINS endif ifdef CONFIG_GCC_PLUGIN_SANCOV - ifeq ($(strip $(CFLAGS_KCOV)),) # It is needed because of the gcc-plugin.sh and gcc version checks. gcc-plugin-$(CONFIG_GCC_PLUGIN_SANCOV) += sancov_plugin.so - ifneq ($(PLUGINCC),) - CFLAGS_KCOV := $(SANCOV_PLUGIN) - else + ifeq ($(PLUGINCC),) $(warning warning: cannot use CONFIG_KCOV: -fsanitize-coverage=trace-pc is not supported by compiler) endif - endif endif gcc-plugin-$(CONFIG_GCC_PLUGIN_STRUCTLEAK) += structleak_plugin.so @@ -38,7 +34,7 @@ ifdef CONFIG_GCC_PLUGINS GCC_PLUGINS_CFLAGS := $(strip $(addprefix -fplugin=$(objtree)/scripts/gcc-plugins/, $(gcc-plugin-y)) $(gcc-plugin-cflags-y)) export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGIN GCC_PLUGIN_SUBDIR - export SANCOV_PLUGIN DISABLE_LATENT_ENTROPY_PLUGIN + export DISABLE_LATENT_ENTROPY_PLUGIN ifneq ($(PLUGINCC),) # SANCOV_PLUGIN can be only in CFLAGS_KCOV because avoid duplication. diff --git a/scripts/Makefile.kcov b/scripts/Makefile.kcov index 5cc72037e423..3d61c4bfcbee 100644 --- a/scripts/Makefile.kcov +++ b/scripts/Makefile.kcov @@ -1,7 +1,9 @@ ifdef CONFIG_KCOV -CFLAGS_KCOV := $(call cc-option,-fsanitize-coverage=trace-pc,) -ifeq ($(CONFIG_KCOV_ENABLE_COMPARISONS),y) -CFLAGS_KCOV += $(call cc-option,-fsanitize-coverage=trace-cmp,) -endif + +kcov-flags-$(CONFIG_CC_HAS_SANCOV_TRACE_PC) += -fsanitize-coverage=trace-pc +kcov-flags-$(CONFIG_KCOV_ENABLE_COMPARISONS) += -fsanitize-coverage=trace-cmp +kcov-flags-$(CONFIG_GCC_PLUGIN_SANCOV) += -fplugin=$(objtree)/scripts/gcc-plugins/sancov_plugin.so + +export CFLAGS_KCOV := $(kcov-flags-y) endif diff --git a/scripts/gcc-plugins/Makefile b/scripts/gcc-plugins/Makefile index e2ff425f4c7e..ea465799ced5 100644 --- a/scripts/gcc-plugins/Makefile +++ b/scripts/gcc-plugins/Makefile @@ -13,10 +13,6 @@ else export HOST_EXTRACXXFLAGS endif -ifneq ($(CFLAGS_KCOV), $(SANCOV_PLUGIN)) - GCC_PLUGIN := $(filter-out $(SANCOV_PLUGIN), $(GCC_PLUGIN)) -endif - export HOSTLIBS $(obj)/randomize_layout_plugin.o: $(objtree)/$(obj)/randomize_layout_seed.h -- cgit v1.2.3 From f2ae67941138a1e53cb1bc6a1b5878a8bdc74d26 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 12 Jun 2018 18:16:19 +0200 Subject: alpha: Remove custom dec_and_lock() implementation Alpha provides a custom implementation of dec_and_lock(). The functions is split into two parts: - atomic_add_unless() + return 0 (fast path in assembly) - remaining part including locking (slow path in C) Comparing the result of the alpha implementation with the generic implementation compiled by gcc it looks like the fast path is optimized by avoiding a stack frame (and reloading the GP), register store and all this. This is only done in the slowpath. After marking the slowpath (atomic_dec_and_lock_1()) as "noinline" and doing the slowpath in C (the atomic_add_unless(atomic, -1, 1) part) I noticed differences in the resulting assembly: - the GP is still reloaded - atomic_add_unless() adds more memory barriers compared to the custom assembly - the custom assembly here does "load, sub, beq" while atomic_add_unless() does "load, cmpeq, add, bne". This is okay because it compares against zero after subtraction while the generic code compares against 1 before. I'm not sure if avoiding the stack frame (and GP reloading) brings a lot in terms of performance. Regarding the different barriers, Peter Zijlstra says: |refcount decrement needs to be a RELEASE operation, such that all the |load/stores to the object happen before we decrement the refcount. | |Otherwise things like: | | obj->foo = 5; | refcnt_dec(&obj->ref); | |can be re-ordered, which then allows fun scenarios like: | | CPU0 CPU1 | | refcnt_dec(&obj->ref); | if (dec_and_test(&obj->ref)) | free(obj); | obj->foo = 5; // oops UaF | | |This means (for alpha) that there should be a memory barrier _before_ |the decrement, however the dec_and_lock asm thing only has one _after_, |which, per the above, is too late. | |The generic version using add_unless will result in memory barrier |before and after (because that is the rule for atomic ops with a return |value) which is strictly too many barriers for the refcount story, but |who knows what other ordering requirements code has. Remove the custom alpha implementation of dec_and_lock() and if it is an issue (performance wise) then the fast path could still be inlined. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra (Intel) Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: linux-alpha@vger.kernel.org Link: https://lkml.kernel.org/r/20180606115918.GG12198@hirez.programming.kicks-ass.net Link: https://lkml.kernel.org/r20180612161621.22645-2-bigeasy@linutronix.de --- arch/alpha/Kconfig | 5 ----- arch/alpha/lib/Makefile | 2 -- arch/alpha/lib/dec_and_lock.c | 44 ------------------------------------------- lib/Makefile | 6 +----- 4 files changed, 1 insertion(+), 56 deletions(-) delete mode 100644 arch/alpha/lib/dec_and_lock.c (limited to 'lib') diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 0c4805a572c8..04a4a138ed13 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -555,11 +555,6 @@ config SMP If you don't know what to do here, say N. -config HAVE_DEC_LOCK - bool - depends on SMP - default y - config NR_CPUS int "Maximum number of CPUs (2-32)" range 2 32 diff --git a/arch/alpha/lib/Makefile b/arch/alpha/lib/Makefile index 04f9729de57c..854d5e79979e 100644 --- a/arch/alpha/lib/Makefile +++ b/arch/alpha/lib/Makefile @@ -35,8 +35,6 @@ lib-y = __divqu.o __remqu.o __divlu.o __remlu.o \ callback_srm.o srm_puts.o srm_printk.o \ fls.o -lib-$(CONFIG_SMP) += dec_and_lock.o - # The division routines are built from single source, with different defines. AFLAGS___divqu.o = -DDIV AFLAGS___remqu.o = -DREM diff --git a/arch/alpha/lib/dec_and_lock.c b/arch/alpha/lib/dec_and_lock.c deleted file mode 100644 index a117707f57fe..000000000000 --- a/arch/alpha/lib/dec_and_lock.c +++ /dev/null @@ -1,44 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * arch/alpha/lib/dec_and_lock.c - * - * ll/sc version of atomic_dec_and_lock() - * - */ - -#include -#include -#include - - asm (".text \n\ - .global _atomic_dec_and_lock \n\ - .ent _atomic_dec_and_lock \n\ - .align 4 \n\ -_atomic_dec_and_lock: \n\ - .prologue 0 \n\ -1: ldl_l $1, 0($16) \n\ - subl $1, 1, $1 \n\ - beq $1, 2f \n\ - stl_c $1, 0($16) \n\ - beq $1, 4f \n\ - mb \n\ - clr $0 \n\ - ret \n\ -2: br $29, 3f \n\ -3: ldgp $29, 0($29) \n\ - br $atomic_dec_and_lock_1..ng \n\ - .subsection 2 \n\ -4: br 1b \n\ - .previous \n\ - .end _atomic_dec_and_lock"); - -static int __used atomic_dec_and_lock_1(atomic_t *atomic, spinlock_t *lock) -{ - /* Slow path */ - spin_lock(lock); - if (atomic_dec_and_test(atomic)) - return 1; - spin_unlock(lock); - return 0; -} -EXPORT_SYMBOL(_atomic_dec_and_lock); diff --git a/lib/Makefile b/lib/Makefile index 84c6dcb31fbb..8b59f4a7c0e2 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -23,7 +23,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ sha1.o chacha20.o irq_regs.o argv_split.o \ flex_proportions.o ratelimit.o show_mem.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ - earlycpio.o seq_buf.o siphash.o \ + earlycpio.o seq_buf.o siphash.o dec_and_lock.o \ nmi_backtrace.o nodemask.o win_minmax.o lib-$(CONFIG_PRINTK) += dump_stack.o @@ -98,10 +98,6 @@ obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o obj-$(CONFIG_DEBUG_LIST) += list_debug.o obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o -ifneq ($(CONFIG_HAVE_DEC_LOCK),y) - lib-y += dec_and_lock.o -endif - obj-$(CONFIG_BITREVERSE) += bitrev.o obj-$(CONFIG_RATIONAL) += rational.o obj-$(CONFIG_CRC_CCITT) += crc-ccitt.o -- cgit v1.2.3 From ccfbb5bed407053b27492a9adc06064d949a9aa6 Mon Sep 17 00:00:00 2001 From: Anna-Maria Gleixner Date: Tue, 12 Jun 2018 18:16:20 +0200 Subject: atomic: Add irqsave variant of atomic_dec_and_lock() There are in-tree users of atomic_dec_and_lock() which must acquire the spin lock with interrupts disabled. To workaround the lack of an irqsave variant of atomic_dec_and_lock() they use local_irq_save() at the call site. This causes extra code and creates in some places unneeded long interrupt disabled times. These places need also extra treatment for PREEMPT_RT due to the disconnect of the irq disabling and the lock function. Implement the missing irqsave variant of the function. Signed-off-by: Anna-Maria Gleixner Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r20180612161621.22645-3-bigeasy@linutronix.de --- include/linux/spinlock.h | 5 +++++ lib/dec_and_lock.c | 16 ++++++++++++++++ 2 files changed, 21 insertions(+) (limited to 'lib') diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index 1e8a46435838..fd57888d4942 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -427,6 +427,11 @@ extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock); #define atomic_dec_and_lock(atomic, lock) \ __cond_lock(lock, _atomic_dec_and_lock(atomic, lock)) +extern int _atomic_dec_and_lock_irqsave(atomic_t *atomic, spinlock_t *lock, + unsigned long *flags); +#define atomic_dec_and_lock_irqsave(atomic, lock, flags) \ + __cond_lock(lock, _atomic_dec_and_lock_irqsave(atomic, lock, &(flags))) + int alloc_bucket_spinlocks(spinlock_t **locks, unsigned int *lock_mask, size_t max_size, unsigned int cpu_mult, gfp_t gfp); diff --git a/lib/dec_and_lock.c b/lib/dec_and_lock.c index 347fa7ac2e8a..9555b68bb774 100644 --- a/lib/dec_and_lock.c +++ b/lib/dec_and_lock.c @@ -33,3 +33,19 @@ int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock) } EXPORT_SYMBOL(_atomic_dec_and_lock); + +int _atomic_dec_and_lock_irqsave(atomic_t *atomic, spinlock_t *lock, + unsigned long *flags) +{ + /* Subtract 1 from counter unless that drops it to 0 (ie. it was 1) */ + if (atomic_add_unless(atomic, -1, 1)) + return 0; + + /* Otherwise do it the slow way */ + spin_lock_irqsave(lock, *flags); + if (atomic_dec_and_test(atomic)) + return 1; + spin_unlock_irqrestore(lock, *flags); + return 0; +} +EXPORT_SYMBOL(_atomic_dec_and_lock_irqsave); -- cgit v1.2.3 From 7ea959c45769612aa92557fb6464679f5fec7d9e Mon Sep 17 00:00:00 2001 From: Anna-Maria Gleixner Date: Tue, 12 Jun 2018 18:16:21 +0200 Subject: locking/refcounts: Implement refcount_dec_and_lock_irqsave() There are in-tree users of refcount_dec_and_lock() which must acquire the spin lock with interrupts disabled. To workaround the lack of an irqsave variant of refcount_dec_and_lock() they use local_irq_save() at the call site. This causes extra code and creates in some places unneeded long interrupt disabled times. These places need also extra treatment for PREEMPT_RT due to the disconnect of the irq disabling and the lock function. Implement the missing irqsave variant of the function. Signed-off-by: Anna-Maria Gleixner Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Acked-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r20180612161621.22645-4-bigeasy@linutronix.de [bigeasy: s@atomic_dec_and_lock@refcount_dec_and_lock@g] --- include/linux/refcount.h | 4 +++- lib/refcount.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 31 insertions(+), 1 deletion(-) (limited to 'lib') diff --git a/include/linux/refcount.h b/include/linux/refcount.h index 4193c41e383a..a685da2c4522 100644 --- a/include/linux/refcount.h +++ b/include/linux/refcount.h @@ -98,5 +98,7 @@ extern __must_check bool refcount_dec_if_one(refcount_t *r); extern __must_check bool refcount_dec_not_one(refcount_t *r); extern __must_check bool refcount_dec_and_mutex_lock(refcount_t *r, struct mutex *lock); extern __must_check bool refcount_dec_and_lock(refcount_t *r, spinlock_t *lock); - +extern __must_check bool refcount_dec_and_lock_irqsave(refcount_t *r, + spinlock_t *lock, + unsigned long *flags); #endif /* _LINUX_REFCOUNT_H */ diff --git a/lib/refcount.c b/lib/refcount.c index 0eb48353abe3..d3b81cefce91 100644 --- a/lib/refcount.c +++ b/lib/refcount.c @@ -350,3 +350,31 @@ bool refcount_dec_and_lock(refcount_t *r, spinlock_t *lock) } EXPORT_SYMBOL(refcount_dec_and_lock); +/** + * refcount_dec_and_lock_irqsave - return holding spinlock with disabled + * interrupts if able to decrement refcount to 0 + * @r: the refcount + * @lock: the spinlock to be locked + * @flags: saved IRQ-flags if the is acquired + * + * Same as refcount_dec_and_lock() above except that the spinlock is acquired + * with disabled interupts. + * + * Return: true and hold spinlock if able to decrement refcount to 0, false + * otherwise + */ +bool refcount_dec_and_lock_irqsave(refcount_t *r, spinlock_t *lock, + unsigned long *flags) +{ + if (refcount_dec_not_one(r)) + return false; + + spin_lock_irqsave(lock, *flags); + if (!refcount_dec_and_test(r)) { + spin_unlock_irqrestore(lock, *flags); + return false; + } + + return true; +} +EXPORT_SYMBOL(refcount_dec_and_lock_irqsave); -- cgit v1.2.3 From 8958fd411ba08aa3ac1aeb19828abaf9cf33f7b8 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 12 Jun 2018 15:04:33 +0300 Subject: test_overflow: fix an IS_ERR() vs NULL bug root_device_register() returns error pointers, it never returns NULL. Fixes: ca90800a91ba ("test_overflow: Add memory allocation overflow tests") Signed-off-by: Dan Carpenter Signed-off-by: Kees Cook --- lib/test_overflow.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib') diff --git a/lib/test_overflow.c b/lib/test_overflow.c index aecbbb217305..2278fe05a1b0 100644 --- a/lib/test_overflow.c +++ b/lib/test_overflow.c @@ -367,7 +367,7 @@ static int __init test_overflow_allocation(void) /* Create dummy device for devm_kmalloc()-family tests. */ dev = root_device_register(device_name); - if (!dev) { + if (IS_ERR(dev)) { pr_warn("Cannot register test device\n"); return 1; } -- cgit v1.2.3 From 6da2ec56059c3c7a7e5f729e6349e74ace1e5c57 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 12 Jun 2018 13:55:00 -0700 Subject: treewide: kmalloc() -> kmalloc_array() The kmalloc() function has a 2-factor argument form, kmalloc_array(). This patch replaces cases of: kmalloc(a * b, gfp) with: kmalloc_array(a * b, gfp) as well as handling cases of: kmalloc(a * b * c, gfp) with: kmalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kmalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kmalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The tools/ directory was manually excluded, since it has its own implementation of kmalloc(). The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(char) * COUNT + COUNT , ...) | kmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kmalloc + kmalloc_array ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kmalloc(C1 * C2 * C3, ...) | kmalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kmalloc(sizeof(THING) * C2, ...) | kmalloc(sizeof(TYPE) * C2, ...) | kmalloc(C1 * C2 * C3, ...) | kmalloc(C1 * C2, ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - (E1) * E2 + E1, E2 , ...) | - kmalloc + kmalloc_array ( - (E1) * (E2) + E1, E2 , ...) | - kmalloc + kmalloc_array ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook --- arch/arm/kernel/sys_oabi-compat.c | 4 +-- arch/arm/mm/pgd.c | 2 +- arch/arm/probes/kprobes/test-core.c | 5 ++-- arch/ia64/kernel/mca_drv.c | 3 ++- arch/ia64/mm/tlb.c | 5 ++-- arch/ia64/sn/kernel/irq.c | 3 ++- arch/mips/alchemy/common/dbdma.c | 4 +-- arch/powerpc/lib/rheap.c | 2 +- arch/powerpc/platforms/4xx/hsta_msi.c | 3 ++- arch/powerpc/platforms/4xx/msi.c | 2 +- arch/powerpc/sysdev/mpic.c | 5 ++-- arch/s390/hypfs/hypfs_diag0c.c | 3 ++- arch/s390/kernel/debug.c | 6 +++-- arch/s390/kernel/perf_cpum_cf_events.c | 2 +- arch/s390/mm/extmem.c | 2 +- arch/sparc/kernel/nmi.c | 3 ++- arch/sparc/kernel/sys_sparc_64.c | 5 ++-- arch/sparc/net/bpf_jit_comp_32.c | 2 +- arch/um/drivers/ubd_kern.c | 12 ++++----- arch/um/drivers/vector_kern.c | 12 ++++----- arch/unicore32/kernel/pm.c | 5 ++-- arch/x86/events/core.c | 2 +- arch/x86/kernel/hpet.c | 4 +-- arch/x86/kernel/ksysfs.c | 2 +- arch/x86/kvm/svm.c | 4 ++- arch/x86/net/bpf_jit_comp.c | 2 +- arch/x86/net/bpf_jit_comp32.c | 2 +- arch/x86/platform/uv/tlb_uv.c | 2 +- block/partitions/ldm.c | 2 +- crypto/testmgr.c | 3 ++- drivers/acpi/acpi_video.c | 5 ++-- drivers/acpi/apei/hest.c | 3 ++- drivers/acpi/processor_perflib.c | 5 ++-- drivers/acpi/processor_throttling.c | 5 ++-- drivers/atm/solos-pci.c | 3 ++- drivers/auxdisplay/cfag12864b.c | 4 +-- drivers/block/DAC960.c | 4 +-- drivers/block/loop.c | 3 ++- drivers/block/z2ram.c | 5 ++-- drivers/cdrom/cdrom.c | 2 +- drivers/char/agp/compat_ioctl.c | 8 ++++-- drivers/char/agp/isoch.c | 3 ++- drivers/char/agp/sgi-agp.c | 6 ++--- drivers/char/agp/uninorth-agp.c | 4 ++- drivers/char/virtio_console.c | 15 +++++------ drivers/cpufreq/bmips-cpufreq.c | 2 +- drivers/crypto/chelsio/chtls/chtls_io.c | 2 +- drivers/crypto/stm32/stm32-hash.c | 5 ++-- drivers/dma/bestcomm/bestcomm.c | 3 ++- drivers/dma/mv_xor.c | 2 +- drivers/firewire/core-iso.c | 4 +-- drivers/firewire/net.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c | 4 +-- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c | 4 +-- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c | 4 +-- drivers/gpu/drm/drm_edid.c | 3 ++- drivers/gpu/drm/gma500/mid_bios.c | 2 +- drivers/gpu/drm/nouveau/nvif/mmu.c | 9 ++++--- drivers/gpu/drm/nouveau/nvif/vmm.c | 3 ++- .../gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c | 3 ++- drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c | 2 +- drivers/gpu/drm/omapdrm/omap_dmm_tiler.c | 4 +-- drivers/gpu/drm/omapdrm/omap_gem.c | 2 +- drivers/gpu/drm/qxl/qxl_kms.c | 4 +-- drivers/gpu/drm/savage/savage_bci.c | 5 ++-- drivers/gpu/drm/tinydrm/repaper.c | 2 +- drivers/gpu/drm/ttm/ttm_page_alloc.c | 8 +++--- drivers/gpu/drm/ttm/ttm_page_alloc_dma.c | 8 +++--- drivers/gpu/drm/vc4/vc4_plane.c | 2 +- drivers/hid/hid-core.c | 9 ++++--- drivers/hid/hid-debug.c | 2 +- drivers/hid/hid-picolcd_fb.c | 3 ++- drivers/hid/hidraw.c | 2 +- drivers/i2c/i2c-dev.c | 2 +- drivers/ide/ide-probe.c | 5 ++-- drivers/infiniband/core/cma.c | 4 +-- drivers/infiniband/core/fmr_pool.c | 5 ++-- drivers/infiniband/hw/cxgb4/id_table.c | 4 +-- drivers/infiniband/hw/mlx4/main.c | 12 +++++---- drivers/infiniband/hw/mlx4/qp.c | 4 +-- drivers/infiniband/hw/mthca/mthca_allocator.c | 18 ++++++++------ drivers/infiniband/hw/mthca/mthca_cmd.c | 6 ++--- drivers/infiniband/hw/mthca/mthca_eq.c | 6 ++--- drivers/infiniband/hw/mthca/mthca_memfree.c | 6 ++--- drivers/infiniband/hw/mthca/mthca_mr.c | 2 +- drivers/infiniband/hw/mthca/mthca_qp.c | 4 +-- drivers/infiniband/hw/mthca/mthca_srq.c | 2 +- drivers/infiniband/hw/nes/nes_nic.c | 2 +- drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 3 ++- drivers/infiniband/hw/qib/qib_iba6120.c | 9 ++++--- drivers/infiniband/hw/qib/qib_iba7220.c | 9 ++++--- drivers/infiniband/hw/qib/qib_iba7322.c | 29 +++++++++++++--------- drivers/infiniband/ulp/iser/iser_initiator.c | 5 ++-- drivers/infiniband/ulp/srp/ib_srp.c | 9 ++++--- drivers/infiniband/ulp/srpt/ib_srpt.c | 2 +- drivers/input/joystick/joydump.c | 2 +- drivers/irqchip/irq-gic-v3-its.c | 4 +-- drivers/isdn/capi/capidrv.c | 3 ++- drivers/isdn/gigaset/capi.c | 4 +-- drivers/isdn/gigaset/common.c | 4 +-- drivers/isdn/hisax/hfc_2bds0.c | 2 +- drivers/isdn/hisax/hfc_2bs0.c | 3 ++- drivers/isdn/hisax/netjet.c | 12 ++++++--- drivers/isdn/i4l/isdn_common.c | 6 +++-- drivers/lightnvm/pblk-init.c | 4 +-- drivers/md/dm-integrity.c | 3 ++- drivers/md/dm-snap.c | 9 ++++--- drivers/md/dm-stats.c | 4 ++- drivers/md/dm-table.c | 2 +- drivers/md/md-bitmap.c | 4 +-- drivers/md/raid1.c | 4 +-- drivers/md/raid10.c | 2 +- drivers/media/pci/bt8xx/bttv-risc.c | 3 ++- drivers/media/pci/ivtv/ivtvfb.c | 2 +- drivers/media/platform/vivid/vivid-core.c | 5 ++-- drivers/media/usb/cpia2/cpia2_usb.c | 3 ++- drivers/media/usb/cx231xx/cx231xx-audio.c | 2 +- drivers/media/usb/go7007/go7007-usb.c | 3 ++- drivers/media/usb/gspca/t613.c | 2 +- drivers/media/usb/stk1160/stk1160-core.c | 5 ++-- drivers/media/usb/tm6000/tm6000-video.c | 13 ++++++---- drivers/media/usb/usbvision/usbvision-video.c | 3 ++- drivers/media/usb/uvc/uvc_video.c | 4 +-- drivers/media/v4l2-core/videobuf-dma-sg.c | 3 ++- drivers/memstick/core/ms_block.c | 6 +++-- drivers/message/fusion/mptlan.c | 7 +++--- drivers/misc/eeprom/idt_89hpesx.c | 2 +- drivers/misc/vmw_vmci/vmci_queue_pair.c | 6 +++-- drivers/mtd/chips/cfi_cmdset_0001.c | 4 ++- drivers/mtd/chips/cfi_cmdset_0002.c | 5 ++-- drivers/mtd/chips/cfi_cmdset_0020.c | 5 ++-- drivers/mtd/ftl.c | 13 +++++----- drivers/mtd/inftlmount.c | 6 +++-- drivers/mtd/lpddr/lpddr_cmds.c | 2 +- drivers/mtd/maps/vmu-flash.c | 8 +++--- drivers/mtd/mtdconcat.c | 5 ++-- drivers/mtd/mtdswap.c | 2 +- drivers/mtd/nand/raw/nand_bch.c | 2 +- drivers/mtd/nftlmount.c | 7 ++++-- drivers/mtd/sm_ftl.c | 2 +- drivers/mtd/ssfdc.c | 5 ++-- drivers/mtd/tests/stresstest.c | 2 +- drivers/mtd/ubi/eba.c | 14 ++++++----- drivers/net/ethernet/amd/lance.c | 8 +++--- drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c | 4 +-- drivers/net/ethernet/atheros/atl1e/atl1e_ethtool.c | 4 +-- drivers/net/ethernet/atheros/atlx/atl2.c | 4 +-- drivers/net/ethernet/broadcom/bnx2.c | 2 +- drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c | 4 +-- drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 2 +- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 6 ++--- drivers/net/ethernet/freescale/ucc_geth.c | 12 ++++----- drivers/net/ethernet/ibm/ibmveth.c | 2 +- drivers/net/ethernet/intel/e1000/e1000_ethtool.c | 4 +-- drivers/net/ethernet/intel/e1000e/ethtool.c | 4 +-- drivers/net/ethernet/intel/igb/igb_ethtool.c | 8 +++--- drivers/net/ethernet/intel/ixgb/ixgb_ethtool.c | 5 ++-- drivers/net/ethernet/intel/ixgb/ixgb_main.c | 5 ++-- drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 2 +- drivers/net/ethernet/mellanox/mlx4/cmd.c | 6 ++--- drivers/net/ethernet/mellanox/mlx4/eq.c | 5 ++-- .../net/ethernet/mellanox/mlx4/resource_tracker.c | 10 +++++--- drivers/net/ethernet/moxa/moxart_ether.c | 8 +++--- drivers/net/ethernet/nvidia/forcedeth.c | 6 +++-- .../net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 2 +- drivers/net/ethernet/qlogic/qed/qed_mcp.c | 6 ++--- drivers/net/ethernet/qlogic/qlge/qlge_main.c | 3 ++- drivers/net/gtp.c | 6 +++-- drivers/net/hippi/rrunner.c | 2 +- drivers/net/team/team.c | 3 ++- drivers/net/usb/asix_common.c | 8 +++--- drivers/net/usb/ax88179_178a.c | 4 +-- drivers/net/usb/usbnet.c | 4 +-- drivers/net/virtio_net.c | 4 +-- drivers/net/wireless/ath/ath5k/phy.c | 3 ++- drivers/net/wireless/ath/ath9k/ar9003_paprd.c | 2 +- drivers/net/wireless/ath/ath9k/hw.c | 4 +-- .../broadcom/brcm80211/brcmsmac/phy/phy_lcn.c | 8 +++--- .../broadcom/brcm80211/brcmsmac/phy/phy_n.c | 5 ++-- drivers/net/wireless/cisco/airo.c | 2 +- drivers/net/wireless/intel/ipw2x00/ipw2100.c | 11 ++++---- drivers/net/wireless/intel/ipw2x00/ipw2200.c | 10 ++++---- drivers/net/wireless/intersil/hostap/hostap_info.c | 5 ++-- .../net/wireless/intersil/hostap/hostap_ioctl.c | 4 +-- drivers/net/wireless/zydas/zd1211rw/zd_mac.c | 3 ++- drivers/pcmcia/cistpl.c | 4 +-- drivers/pinctrl/freescale/pinctrl-imx.c | 3 ++- drivers/pinctrl/freescale/pinctrl-imx1-core.c | 3 ++- drivers/pinctrl/sunxi/pinctrl-sunxi.c | 2 +- drivers/s390/block/dasd_eer.c | 4 +-- drivers/s390/char/tty3270.c | 3 ++- drivers/s390/crypto/pkey_api.c | 6 ++--- drivers/scsi/aacraid/aachba.c | 2 +- drivers/scsi/aha1542.c | 3 ++- drivers/scsi/aic7xxx/aic79xx_core.c | 3 ++- drivers/scsi/aic94xx/aic94xx_hwi.c | 7 +++--- drivers/scsi/arm/queue.c | 2 +- drivers/scsi/be2iscsi/be_main.c | 14 ++++++----- drivers/scsi/fcoe/fcoe_ctlr.c | 4 +-- drivers/scsi/hpsa.c | 14 ++++++----- drivers/scsi/lpfc/lpfc_mem.c | 5 ++-- drivers/scsi/mac53c94.c | 5 ++-- drivers/scsi/megaraid.c | 3 ++- drivers/scsi/megaraid/megaraid_mm.c | 10 +++++--- drivers/scsi/osst.c | 4 ++- drivers/scsi/qla2xxx/qla_nx.c | 2 +- drivers/scsi/qla4xxx/ql4_nx.c | 2 +- drivers/scsi/smartpqi/smartpqi_init.c | 5 ++-- drivers/scsi/st.c | 3 ++- drivers/scsi/virtio_scsi.c | 7 +++--- drivers/soc/fsl/qbman/qman.c | 2 +- drivers/staging/media/zoran/zoran_driver.c | 2 +- drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c | 5 ++-- drivers/staging/rtl8192u/r8192U_core.c | 4 +-- drivers/tty/hvc/hvcs.c | 3 ++- drivers/tty/isicom.c | 2 +- drivers/tty/serial/atmel_serial.c | 5 ++-- drivers/tty/vt/consolemap.c | 7 +++--- drivers/tty/vt/keyboard.c | 4 +-- drivers/tty/vt/selection.c | 3 ++- drivers/usb/core/devio.c | 7 +++--- drivers/usb/core/message.c | 6 ++--- drivers/usb/host/fhci-tds.c | 2 +- drivers/usb/host/ohci-dbg.c | 2 +- drivers/usb/misc/ldusb.c | 9 +++++-- drivers/usb/serial/iuu_phoenix.c | 4 +-- drivers/usb/storage/alauda.c | 2 +- drivers/usb/storage/ene_ub6250.c | 16 +++++++++--- drivers/usb/storage/sddr09.c | 4 +-- drivers/usb/storage/sddr55.c | 6 ++--- drivers/uwb/est.c | 2 +- drivers/uwb/i1480/dfu/usb.c | 2 +- drivers/vhost/net.c | 8 +++--- drivers/vhost/scsi.c | 2 +- drivers/vhost/test.c | 2 +- drivers/vhost/vhost.c | 11 +++++--- drivers/vhost/vringh.c | 2 +- drivers/video/fbdev/core/bitblit.c | 4 +-- drivers/video/fbdev/core/fbcon.c | 3 ++- drivers/video/fbdev/core/fbcon_ccw.c | 7 +++--- drivers/video/fbdev/core/fbcon_cw.c | 7 +++--- drivers/video/fbdev/core/fbcon_rotate.c | 2 +- drivers/video/fbdev/core/fbcon_ud.c | 4 +-- drivers/video/fbdev/core/fbmem.c | 7 +++--- drivers/video/fbdev/core/fbmon.c | 2 +- drivers/video/fbdev/imxfb.c | 2 +- drivers/video/fbdev/mb862xx/mb862xxfb_accel.c | 2 +- drivers/video/fbdev/nvidia/nvidia.c | 2 +- drivers/video/fbdev/pvr2fb.c | 2 +- drivers/video/fbdev/riva/fbdev.c | 2 +- drivers/video/fbdev/via/viafbdev.c | 3 ++- drivers/video/fbdev/w100fb.c | 3 ++- drivers/virt/vboxguest/vboxguest_core.c | 7 +++--- drivers/virtio/virtio_pci_common.c | 5 ++-- drivers/virtio/virtio_ring.c | 2 +- drivers/xen/grant-table.c | 7 +++--- drivers/xen/xen-pciback/pciback_ops.c | 2 +- fs/9p/fid.c | 2 +- fs/adfs/super.c | 2 +- fs/afs/cmservice.c | 7 +++--- fs/binfmt_elf.c | 2 +- fs/binfmt_elf_fdpic.c | 3 ++- fs/block_dev.c | 3 ++- fs/ceph/addr.c | 11 ++++---- fs/ceph/mds_client.c | 5 ++-- fs/cifs/asn1.c | 2 +- fs/cifs/cifsacl.c | 4 +-- fs/cifs/inode.c | 2 +- fs/cifs/smb2pdu.c | 6 ++--- fs/cifs/transport.c | 8 +++--- fs/exofs/inode.c | 4 +-- fs/ext2/super.c | 4 ++- fs/ext4/resize.c | 10 +++++--- fs/fat/namei_vfat.c | 2 +- fs/fuse/dev.c | 15 +++++++---- fs/gfs2/dir.c | 6 ++--- fs/gfs2/glock.c | 3 ++- fs/gfs2/quota.c | 2 +- fs/gfs2/rgrp.c | 5 ++-- fs/gfs2/super.c | 2 +- fs/hpfs/dnode.c | 3 ++- fs/hpfs/map.c | 2 +- fs/jbd2/revoke.c | 2 +- fs/jffs2/wbuf.c | 2 +- fs/jfs/jfs_dmap.c | 2 +- fs/jfs/jfs_dtree.c | 9 ++++--- fs/jfs/jfs_unicode.c | 2 +- fs/mbcache.c | 5 ++-- fs/namei.c | 4 +-- fs/nfsd/nfs4recover.c | 5 ++-- fs/nfsd/nfs4state.c | 20 +++++++++------ fs/ntfs/compress.c | 2 +- fs/ocfs2/cluster/tcp.c | 2 +- fs/ocfs2/dlm/dlmdomain.c | 2 +- fs/proc/base.c | 3 ++- fs/proc/task_mmu.c | 2 +- fs/read_write.c | 4 +-- fs/reiserfs/journal.c | 10 +++++--- fs/select.c | 2 +- fs/splice.c | 7 +++--- fs/ubifs/lpt.c | 16 ++++++------ fs/ubifs/super.c | 3 ++- fs/ubifs/tnc.c | 5 ++-- fs/ubifs/tnc_commit.c | 5 ++-- fs/ufs/super.c | 4 ++- kernel/bpf/lpm_trie.c | 5 ++-- kernel/cgroup/cgroup-v1.c | 2 +- kernel/cgroup/cpuset.c | 5 ++-- kernel/debug/kdb/kdb_main.c | 11 +++++--- kernel/fail_function.c | 2 +- kernel/locking/locktorture.c | 8 ++++-- kernel/relay.c | 3 ++- kernel/sched/topology.c | 2 +- kernel/trace/ftrace.c | 26 ++++++++++--------- kernel/trace/trace.c | 9 ++++--- kernel/trace/trace_events_filter.c | 6 ++--- kernel/user_namespace.c | 5 ++-- lib/argv_split.c | 2 +- lib/interval_tree_test.c | 5 ++-- lib/kfifo.c | 2 +- lib/mpi/mpiutil.c | 2 +- lib/rbtree_test.c | 2 +- lib/reed_solomon/reed_solomon.c | 6 ++--- lib/scatterlist.c | 3 ++- mm/huge_memory.c | 4 +-- mm/hugetlb.c | 3 ++- mm/slub.c | 12 +++++---- net/9p/protocol.c | 11 ++++---- net/9p/trans_virtio.c | 3 ++- net/atm/mpc.c | 2 +- net/bluetooth/hci_core.c | 2 +- net/bluetooth/l2cap_core.c | 2 +- net/can/bcm.c | 10 +++++--- net/ceph/osdmap.c | 5 ++-- net/ceph/pagevec.c | 4 +-- net/core/dev.c | 2 +- net/core/ethtool.c | 2 +- net/dcb/dcbnl.c | 3 ++- net/dccp/ccids/ccid2.c | 3 ++- net/ipv4/route.c | 3 ++- net/mac80211/main.c | 2 +- net/mac80211/rc80211_minstrel.c | 2 +- net/mac80211/rc80211_minstrel_ht.c | 2 +- net/netfilter/nf_conntrack_proto.c | 3 ++- net/netfilter/nf_nat_core.c | 5 ++-- net/netfilter/nf_tables_api.c | 4 +-- net/netfilter/x_tables.c | 2 +- net/netlink/genetlink.c | 10 +++++--- net/openvswitch/datapath.c | 5 ++-- net/rds/info.c | 2 +- net/rxrpc/rxkad.c | 2 +- net/sctp/protocol.c | 2 +- net/sunrpc/auth_gss/auth_gss.c | 3 ++- net/tipc/netlink_compat.c | 5 ++-- security/keys/trusted.c | 2 +- sound/core/pcm_compat.c | 2 +- sound/core/pcm_native.c | 4 +-- sound/core/seq/seq_midi_emul.c | 2 +- sound/firewire/packets-buffer.c | 2 +- sound/oss/dmasound/dmasound_core.c | 2 +- sound/pci/cs46xx/cs46xx_lib.c | 7 +++--- sound/pci/cs46xx/dsp_spos.c | 4 ++- sound/pci/emu10k1/emufx.c | 6 ++--- sound/pci/hda/hda_codec.c | 4 +-- sound/pci/hda/hda_proc.c | 5 ++-- sound/pci/via82xx.c | 4 ++- sound/pci/via82xx_modem.c | 4 ++- sound/pci/ymfpci/ymfpci_main.c | 4 +-- sound/soc/codecs/wm8904.c | 5 ++-- sound/soc/codecs/wm8958-dsp2.c | 20 +++++++++------ sound/usb/caiaq/audio.c | 7 +++--- sound/usb/format.c | 5 ++-- sound/usb/line6/pcm.c | 6 +++-- sound/usb/mixer.c | 2 +- sound/usb/pcm.c | 2 +- sound/usb/usx2y/usbusx2y.c | 4 ++- sound/usb/usx2y/usbusx2yaudio.c | 7 ++++-- 377 files changed, 1014 insertions(+), 748 deletions(-) (limited to 'lib') diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c index b9786f491873..1df21a61e379 100644 --- a/arch/arm/kernel/sys_oabi-compat.c +++ b/arch/arm/kernel/sys_oabi-compat.c @@ -286,7 +286,7 @@ asmlinkage long sys_oabi_epoll_wait(int epfd, return -EINVAL; if (!access_ok(VERIFY_WRITE, events, sizeof(*events) * maxevents)) return -EFAULT; - kbuf = kmalloc(sizeof(*kbuf) * maxevents, GFP_KERNEL); + kbuf = kmalloc_array(maxevents, sizeof(*kbuf), GFP_KERNEL); if (!kbuf) return -ENOMEM; fs = get_fs(); @@ -324,7 +324,7 @@ asmlinkage long sys_oabi_semtimedop(int semid, return -EINVAL; if (!access_ok(VERIFY_READ, tsops, sizeof(*tsops) * nsops)) return -EFAULT; - sops = kmalloc(sizeof(*sops) * nsops, GFP_KERNEL); + sops = kmalloc_array(nsops, sizeof(*sops), GFP_KERNEL); if (!sops) return -ENOMEM; err = 0; diff --git a/arch/arm/mm/pgd.c b/arch/arm/mm/pgd.c index 61e281cb29fb..a1606d950251 100644 --- a/arch/arm/mm/pgd.c +++ b/arch/arm/mm/pgd.c @@ -20,7 +20,7 @@ #include "mm.h" #ifdef CONFIG_ARM_LPAE -#define __pgd_alloc() kmalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL) +#define __pgd_alloc() kmalloc_array(PTRS_PER_PGD, sizeof(pgd_t), GFP_KERNEL) #define __pgd_free(pgd) kfree(pgd) #else #define __pgd_alloc() (pgd_t *)__get_free_pages(GFP_KERNEL, 2) diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c index 9ed0129bed3c..14db14152909 100644 --- a/arch/arm/probes/kprobes/test-core.c +++ b/arch/arm/probes/kprobes/test-core.c @@ -766,8 +766,9 @@ static int coverage_start_fn(const struct decode_header *h, void *args) static int coverage_start(const union decode_item *table) { - coverage.base = kmalloc(MAX_COVERAGE_ENTRIES * - sizeof(struct coverage_entry), GFP_KERNEL); + coverage.base = kmalloc_array(MAX_COVERAGE_ENTRIES, + sizeof(struct coverage_entry), + GFP_KERNEL); coverage.num_entries = 0; coverage.nesting = 0; return table_iter(table, coverage_start_fn, &coverage); diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c index 94f8bf777afa..dfe40cbdf3b3 100644 --- a/arch/ia64/kernel/mca_drv.c +++ b/arch/ia64/kernel/mca_drv.c @@ -350,7 +350,8 @@ init_record_index_pools(void) /* - 3 - */ slidx_pool.max_idx = (rec_max_size/sect_min_size) * 2 + 1; slidx_pool.buffer = - kmalloc(slidx_pool.max_idx * sizeof(slidx_list_t), GFP_KERNEL); + kmalloc_array(slidx_pool.max_idx, sizeof(slidx_list_t), + GFP_KERNEL); return slidx_pool.buffer ? 0 : -ENOMEM; } diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c index 46ecc5d948aa..acf10eb9da15 100644 --- a/arch/ia64/mm/tlb.c +++ b/arch/ia64/mm/tlb.c @@ -430,8 +430,9 @@ int ia64_itr_entry(u64 target_mask, u64 va, u64 pte, u64 log_size) int cpu = smp_processor_id(); if (!ia64_idtrs[cpu]) { - ia64_idtrs[cpu] = kmalloc(2 * IA64_TR_ALLOC_MAX * - sizeof (struct ia64_tr_entry), GFP_KERNEL); + ia64_idtrs[cpu] = kmalloc_array(2 * IA64_TR_ALLOC_MAX, + sizeof(struct ia64_tr_entry), + GFP_KERNEL); if (!ia64_idtrs[cpu]) return -ENOMEM; } diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c index 85d095154902..d9b576df4f82 100644 --- a/arch/ia64/sn/kernel/irq.c +++ b/arch/ia64/sn/kernel/irq.c @@ -474,7 +474,8 @@ void __init sn_irq_lh_init(void) { int i; - sn_irq_lh = kmalloc(sizeof(struct list_head *) * NR_IRQS, GFP_KERNEL); + sn_irq_lh = kmalloc_array(NR_IRQS, sizeof(struct list_head *), + GFP_KERNEL); if (!sn_irq_lh) panic("SN PCI INIT: Failed to allocate memory for PCI init\n"); diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c index fc482d900ddd..24b04758cce5 100644 --- a/arch/mips/alchemy/common/dbdma.c +++ b/arch/mips/alchemy/common/dbdma.c @@ -411,8 +411,8 @@ u32 au1xxx_dbdma_ring_alloc(u32 chanid, int entries) * and if we try that first we are likely to not waste larger * slabs of memory. */ - desc_base = (u32)kmalloc(entries * sizeof(au1x_ddma_desc_t), - GFP_KERNEL|GFP_DMA); + desc_base = (u32)kmalloc_array(entries, sizeof(au1x_ddma_desc_t), + GFP_KERNEL|GFP_DMA); if (desc_base == 0) return 0; diff --git a/arch/powerpc/lib/rheap.c b/arch/powerpc/lib/rheap.c index 94058c21a482..6aa774aa5b16 100644 --- a/arch/powerpc/lib/rheap.c +++ b/arch/powerpc/lib/rheap.c @@ -54,7 +54,7 @@ static int grow(rh_info_t * info, int max_blocks) new_blocks = max_blocks - info->max_blocks; - block = kmalloc(sizeof(rh_block_t) * max_blocks, GFP_ATOMIC); + block = kmalloc_array(max_blocks, sizeof(rh_block_t), GFP_ATOMIC); if (block == NULL) return -ENOMEM; diff --git a/arch/powerpc/platforms/4xx/hsta_msi.c b/arch/powerpc/platforms/4xx/hsta_msi.c index 9926ad67af76..1c18f2955f7d 100644 --- a/arch/powerpc/platforms/4xx/hsta_msi.c +++ b/arch/powerpc/platforms/4xx/hsta_msi.c @@ -156,7 +156,8 @@ static int hsta_msi_probe(struct platform_device *pdev) if (ret) goto out; - ppc4xx_hsta_msi.irq_map = kmalloc(sizeof(int) * irq_count, GFP_KERNEL); + ppc4xx_hsta_msi.irq_map = kmalloc_array(irq_count, sizeof(int), + GFP_KERNEL); if (!ppc4xx_hsta_msi.irq_map) { ret = -ENOMEM; goto out1; diff --git a/arch/powerpc/platforms/4xx/msi.c b/arch/powerpc/platforms/4xx/msi.c index 96aaae678928..81b2cbce7df8 100644 --- a/arch/powerpc/platforms/4xx/msi.c +++ b/arch/powerpc/platforms/4xx/msi.c @@ -89,7 +89,7 @@ static int ppc4xx_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) if (type == PCI_CAP_ID_MSIX) pr_debug("ppc4xx msi: MSI-X untested, trying anyway.\n"); - msi_data->msi_virqs = kmalloc((msi_irqs) * sizeof(int), GFP_KERNEL); + msi_data->msi_virqs = kmalloc_array(msi_irqs, sizeof(int), GFP_KERNEL); if (!msi_data->msi_virqs) return -ENOMEM; diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index 1d4e0ef658d3..df062a154ca8 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -1639,8 +1639,9 @@ void __init mpic_init(struct mpic *mpic) #ifdef CONFIG_PM /* allocate memory to save mpic state */ - mpic->save_data = kmalloc(mpic->num_sources * sizeof(*mpic->save_data), - GFP_KERNEL); + mpic->save_data = kmalloc_array(mpic->num_sources, + sizeof(*mpic->save_data), + GFP_KERNEL); BUG_ON(mpic->save_data == NULL); #endif diff --git a/arch/s390/hypfs/hypfs_diag0c.c b/arch/s390/hypfs/hypfs_diag0c.c index dce87f1bec94..cebf05150cc1 100644 --- a/arch/s390/hypfs/hypfs_diag0c.c +++ b/arch/s390/hypfs/hypfs_diag0c.c @@ -49,7 +49,8 @@ static void *diag0c_store(unsigned int *count) get_online_cpus(); cpu_count = num_online_cpus(); - cpu_vec = kmalloc(sizeof(*cpu_vec) * num_possible_cpus(), GFP_KERNEL); + cpu_vec = kmalloc_array(num_possible_cpus(), sizeof(*cpu_vec), + GFP_KERNEL); if (!cpu_vec) goto fail_put_online_cpus; /* Note: Diag 0c needs 8 byte alignment and real storage */ diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index 80e974adb9e8..d374f9b218b4 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -194,11 +194,13 @@ static debug_entry_t ***debug_areas_alloc(int pages_per_area, int nr_areas) debug_entry_t ***areas; int i, j; - areas = kmalloc(nr_areas * sizeof(debug_entry_t **), GFP_KERNEL); + areas = kmalloc_array(nr_areas, sizeof(debug_entry_t **), GFP_KERNEL); if (!areas) goto fail_malloc_areas; for (i = 0; i < nr_areas; i++) { - areas[i] = kmalloc(pages_per_area * sizeof(debug_entry_t *), GFP_KERNEL); + areas[i] = kmalloc_array(pages_per_area, + sizeof(debug_entry_t *), + GFP_KERNEL); if (!areas[i]) goto fail_malloc_areas2; for (j = 0; j < pages_per_area; j++) { diff --git a/arch/s390/kernel/perf_cpum_cf_events.c b/arch/s390/kernel/perf_cpum_cf_events.c index feebb2944882..d63fb3c56b8a 100644 --- a/arch/s390/kernel/perf_cpum_cf_events.c +++ b/arch/s390/kernel/perf_cpum_cf_events.c @@ -527,7 +527,7 @@ static __init struct attribute **merge_attr(struct attribute **a, j++; j++; - new = kmalloc(sizeof(struct attribute *) * j, GFP_KERNEL); + new = kmalloc_array(j, sizeof(struct attribute *), GFP_KERNEL); if (!new) return NULL; j = 0; diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c index 920d40894535..6ad15d3fab81 100644 --- a/arch/s390/mm/extmem.c +++ b/arch/s390/mm/extmem.c @@ -103,7 +103,7 @@ static int scode_set; static int dcss_set_subcodes(void) { - char *name = kmalloc(8 * sizeof(char), GFP_KERNEL | GFP_DMA); + char *name = kmalloc(8, GFP_KERNEL | GFP_DMA); unsigned long rx, ry; int rc; diff --git a/arch/sparc/kernel/nmi.c b/arch/sparc/kernel/nmi.c index 048ad783ea3f..8babbeb30adf 100644 --- a/arch/sparc/kernel/nmi.c +++ b/arch/sparc/kernel/nmi.c @@ -166,7 +166,8 @@ static int __init check_nmi_watchdog(void) if (!atomic_read(&nmi_active)) return 0; - prev_nmi_count = kmalloc(nr_cpu_ids * sizeof(unsigned int), GFP_KERNEL); + prev_nmi_count = kmalloc_array(nr_cpu_ids, sizeof(unsigned int), + GFP_KERNEL); if (!prev_nmi_count) { err = -ENOMEM; goto error; diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 7e49bbc925a5..33e351704f9f 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -575,8 +575,9 @@ SYSCALL_DEFINE5(utrap_install, utrap_entry_t, type, unsigned long *p = current_thread_info()->utraps; current_thread_info()->utraps = - kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), - GFP_KERNEL); + kmalloc_array(UT_TRAP_INSTRUCTION_31 + 1, + sizeof(long), + GFP_KERNEL); if (!current_thread_info()->utraps) { current_thread_info()->utraps = p; return -ENOMEM; diff --git a/arch/sparc/net/bpf_jit_comp_32.c b/arch/sparc/net/bpf_jit_comp_32.c index 3bd8ca95e521..a5ff88643d5c 100644 --- a/arch/sparc/net/bpf_jit_comp_32.c +++ b/arch/sparc/net/bpf_jit_comp_32.c @@ -335,7 +335,7 @@ void bpf_jit_compile(struct bpf_prog *fp) if (!bpf_jit_enable) return; - addrs = kmalloc(flen * sizeof(*addrs), GFP_KERNEL); + addrs = kmalloc_array(flen, sizeof(*addrs), GFP_KERNEL); if (addrs == NULL) return; diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index dcf5ea28a281..83c470364dfb 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -1127,9 +1127,9 @@ static int __init ubd_init(void) return -1; } - irq_req_buffer = kmalloc( - sizeof(struct io_thread_req *) * UBD_REQ_BUFFER_SIZE, - GFP_KERNEL + irq_req_buffer = kmalloc_array(UBD_REQ_BUFFER_SIZE, + sizeof(struct io_thread_req *), + GFP_KERNEL ); irq_remainder = 0; @@ -1137,9 +1137,9 @@ static int __init ubd_init(void) printk(KERN_ERR "Failed to initialize ubd buffering\n"); return -1; } - io_req_buffer = kmalloc( - sizeof(struct io_thread_req *) * UBD_REQ_BUFFER_SIZE, - GFP_KERNEL + io_req_buffer = kmalloc_array(UBD_REQ_BUFFER_SIZE, + sizeof(struct io_thread_req *), + GFP_KERNEL ); io_remainder = 0; diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c index 02168fe25105..627075e6d875 100644 --- a/arch/um/drivers/vector_kern.c +++ b/arch/um/drivers/vector_kern.c @@ -527,14 +527,14 @@ static struct vector_queue *create_queue( result->max_iov_frags = num_extra_frags; for (i = 0; i < max_size; i++) { if (vp->header_size > 0) - iov = kmalloc( - sizeof(struct iovec) * (3 + num_extra_frags), - GFP_KERNEL + iov = kmalloc_array(3 + num_extra_frags, + sizeof(struct iovec), + GFP_KERNEL ); else - iov = kmalloc( - sizeof(struct iovec) * (2 + num_extra_frags), - GFP_KERNEL + iov = kmalloc_array(2 + num_extra_frags, + sizeof(struct iovec), + GFP_KERNEL ); if (iov == NULL) goto out_fail; diff --git a/arch/unicore32/kernel/pm.c b/arch/unicore32/kernel/pm.c index 784bc2db3b28..6f8164d91dc2 100644 --- a/arch/unicore32/kernel/pm.c +++ b/arch/unicore32/kernel/pm.c @@ -109,8 +109,9 @@ static int __init puv3_pm_init(void) return -EINVAL; } - sleep_save = kmalloc(puv3_cpu_pm_fns->save_count - * sizeof(unsigned long), GFP_KERNEL); + sleep_save = kmalloc_array(puv3_cpu_pm_fns->save_count, + sizeof(unsigned long), + GFP_KERNEL); if (!sleep_save) { printk(KERN_ERR "failed to alloc memory for pm save\n"); return -ENOMEM; diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 6e461fb1e0d4..5f4829f10129 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -1637,7 +1637,7 @@ __init struct attribute **merge_attr(struct attribute **a, struct attribute **b) j++; j++; - new = kmalloc(sizeof(struct attribute *) * j, GFP_KERNEL); + new = kmalloc_array(j, sizeof(struct attribute *), GFP_KERNEL); if (!new) return NULL; diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index b6be34ee88e9..ddccdea0b63b 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -966,8 +966,8 @@ int __init hpet_enable(void) #endif cfg = hpet_readl(HPET_CFG); - hpet_boot_cfg = kmalloc((last + 2) * sizeof(*hpet_boot_cfg), - GFP_KERNEL); + hpet_boot_cfg = kmalloc_array(last + 2, sizeof(*hpet_boot_cfg), + GFP_KERNEL); if (hpet_boot_cfg) *hpet_boot_cfg = cfg; else diff --git a/arch/x86/kernel/ksysfs.c b/arch/x86/kernel/ksysfs.c index 8c1cc08f514f..163ae706a0d4 100644 --- a/arch/x86/kernel/ksysfs.c +++ b/arch/x86/kernel/ksysfs.c @@ -283,7 +283,7 @@ static int __init create_setup_data_nodes(struct kobject *parent) if (ret) goto out_setup_data_kobj; - kobjp = kmalloc(sizeof(*kobjp) * nr, GFP_KERNEL); + kobjp = kmalloc_array(nr, sizeof(*kobjp), GFP_KERNEL); if (!kobjp) { ret = -ENOMEM; goto out_setup_data_kobj; diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 950ec50f77c3..e831e6d3b70e 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1001,7 +1001,9 @@ static int svm_cpu_init(int cpu) if (svm_sev_enabled()) { r = -ENOMEM; - sd->sev_vmcbs = kmalloc((max_sev_asid + 1) * sizeof(void *), GFP_KERNEL); + sd->sev_vmcbs = kmalloc_array(max_sev_asid + 1, + sizeof(void *), + GFP_KERNEL); if (!sd->sev_vmcbs) goto err_1; } diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 8fca446aaef6..2580cd2e98b1 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -1107,7 +1107,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) extra_pass = true; goto skip_init_addrs; } - addrs = kmalloc(prog->len * sizeof(*addrs), GFP_KERNEL); + addrs = kmalloc_array(prog->len, sizeof(*addrs), GFP_KERNEL); if (!addrs) { prog = orig_prog; goto out_addrs; diff --git a/arch/x86/net/bpf_jit_comp32.c b/arch/x86/net/bpf_jit_comp32.c index 0cc04e30adc1..55799873ebe5 100644 --- a/arch/x86/net/bpf_jit_comp32.c +++ b/arch/x86/net/bpf_jit_comp32.c @@ -2345,7 +2345,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *prog) prog = tmp; } - addrs = kmalloc(prog->len * sizeof(*addrs), GFP_KERNEL); + addrs = kmalloc_array(prog->len, sizeof(*addrs), GFP_KERNEL); if (!addrs) { prog = orig_prog; goto out; diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index b96d38288c60..ca446da48fd2 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -2142,7 +2142,7 @@ static int __init init_per_cpu(int nuvhubs, int base_part_pnode) if (is_uv3_hub() || is_uv2_hub() || is_uv1_hub()) timeout_us = calculate_destination_timeout(); - vp = kmalloc(nuvhubs * sizeof(struct uvhub_desc), GFP_KERNEL); + vp = kmalloc_array(nuvhubs, sizeof(struct uvhub_desc), GFP_KERNEL); uvhub_descs = (struct uvhub_desc *)vp; memset(uvhub_descs, 0, nuvhubs * sizeof(struct uvhub_desc)); uvhub_mask = kzalloc((nuvhubs+7)/8, GFP_KERNEL); diff --git a/block/partitions/ldm.c b/block/partitions/ldm.c index 2a365c756648..0417937dfe99 100644 --- a/block/partitions/ldm.c +++ b/block/partitions/ldm.c @@ -378,7 +378,7 @@ static bool ldm_validate_tocblocks(struct parsed_partitions *state, BUG_ON(!state || !ldb); ph = &ldb->ph; tb[0] = &ldb->toc; - tb[1] = kmalloc(sizeof(*tb[1]) * 3, GFP_KERNEL); + tb[1] = kmalloc_array(3, sizeof(*tb[1]), GFP_KERNEL); if (!tb[1]) { ldm_crit("Out of memory."); goto err; diff --git a/crypto/testmgr.c b/crypto/testmgr.c index d1d99843cce4..11e45352fd0b 100644 --- a/crypto/testmgr.c +++ b/crypto/testmgr.c @@ -603,7 +603,8 @@ static int __test_aead(struct crypto_aead *tfm, int enc, goto out_nooutbuf; /* avoid "the frame size is larger than 1024 bytes" compiler warning */ - sg = kmalloc(sizeof(*sg) * 8 * (diff_dst ? 4 : 2), GFP_KERNEL); + sg = kmalloc(array3_size(sizeof(*sg), 8, (diff_dst ? 4 : 2)), + GFP_KERNEL); if (!sg) goto out_nosg; sgout = &sg[16]; diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c index 2f2e737be0f8..f0b52266b3ac 100644 --- a/drivers/acpi/acpi_video.c +++ b/drivers/acpi/acpi_video.c @@ -832,8 +832,9 @@ int acpi_video_get_levels(struct acpi_device *device, * in order to account for buggy BIOS which don't export the first two * special levels (see below) */ - br->levels = kmalloc((obj->package.count + ACPI_VIDEO_FIRST_LEVEL) * - sizeof(*br->levels), GFP_KERNEL); + br->levels = kmalloc_array(obj->package.count + ACPI_VIDEO_FIRST_LEVEL, + sizeof(*br->levels), + GFP_KERNEL); if (!br->levels) { result = -ENOMEM; goto out_free; diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index 9cb74115a43d..b1e9f81ebeea 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -195,7 +195,8 @@ static int __init hest_ghes_dev_register(unsigned int ghes_count) struct ghes_arr ghes_arr; ghes_arr.count = 0; - ghes_arr.ghes_devs = kmalloc(sizeof(void *) * ghes_count, GFP_KERNEL); + ghes_arr.ghes_devs = kmalloc_array(ghes_count, sizeof(void *), + GFP_KERNEL); if (!ghes_arr.ghes_devs) return -ENOMEM; diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index a651ab3490d8..a303fd0e108c 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -343,8 +343,9 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr) pr->performance->state_count = pss->package.count; pr->performance->states = - kmalloc(sizeof(struct acpi_processor_px) * pss->package.count, - GFP_KERNEL); + kmalloc_array(pss->package.count, + sizeof(struct acpi_processor_px), + GFP_KERNEL); if (!pr->performance->states) { result = -ENOMEM; goto end; diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index 7f9aff4b8d62..fbc936cf2025 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -534,8 +534,9 @@ static int acpi_processor_get_throttling_states(struct acpi_processor *pr) pr->throttling.state_count = tss->package.count; pr->throttling.states_tss = - kmalloc(sizeof(struct acpi_processor_tx_tss) * tss->package.count, - GFP_KERNEL); + kmalloc_array(tss->package.count, + sizeof(struct acpi_processor_tx_tss), + GFP_KERNEL); if (!pr->throttling.states_tss) { result = -ENOMEM; goto end; diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c index 0df1a1c80b00..17283018269f 100644 --- a/drivers/atm/solos-pci.c +++ b/drivers/atm/solos-pci.c @@ -1291,7 +1291,8 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) card->using_dma = 1; if (1) { /* All known FPGA versions so far */ card->dma_alignment = 3; - card->dma_bounce = kmalloc(card->nr_ports * BUF_SIZE, GFP_KERNEL); + card->dma_bounce = kmalloc_array(card->nr_ports, + BUF_SIZE, GFP_KERNEL); if (!card->dma_bounce) { dev_warn(&card->dev->dev, "Failed to allocate DMA bounce buffers\n"); err = -ENOMEM; diff --git a/drivers/auxdisplay/cfag12864b.c b/drivers/auxdisplay/cfag12864b.c index 6bd2f65e116a..7eebae7e322c 100644 --- a/drivers/auxdisplay/cfag12864b.c +++ b/drivers/auxdisplay/cfag12864b.c @@ -333,8 +333,8 @@ static int __init cfag12864b_init(void) goto none; } - cfag12864b_cache = kmalloc(sizeof(unsigned char) * - CFAG12864B_SIZE, GFP_KERNEL); + cfag12864b_cache = kmalloc(CFAG12864B_SIZE, + GFP_KERNEL); if (cfag12864b_cache == NULL) { printk(KERN_ERR CFAG12864B_NAME ": ERROR: " "can't alloc cache buffer (%i bytes)\n", diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c index 6ca77d6047d6..f6518067aa7d 100644 --- a/drivers/block/DAC960.c +++ b/drivers/block/DAC960.c @@ -5719,8 +5719,8 @@ static bool DAC960_CheckStatusBuffer(DAC960_Controller_T *Controller, Controller->CombinedStatusBufferLength = NewStatusBufferLength; return true; } - NewStatusBuffer = kmalloc(2 * Controller->CombinedStatusBufferLength, - GFP_ATOMIC); + NewStatusBuffer = kmalloc_array(2, Controller->CombinedStatusBufferLength, + GFP_ATOMIC); if (NewStatusBuffer == NULL) { DAC960_Warning("Unable to expand Combined Status Buffer - Truncating\n", diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 21e6d1b3b393..d6b6f434fd4b 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -524,7 +524,8 @@ static int lo_rw_aio(struct loop_device *lo, struct loop_cmd *cmd, __rq_for_each_bio(bio, rq) segments += bio_segments(bio); - bvec = kmalloc(sizeof(struct bio_vec) * segments, GFP_NOIO); + bvec = kmalloc_array(segments, sizeof(struct bio_vec), + GFP_NOIO); if (!bvec) return -EIO; cmd->bvec = bvec; diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c index 8f9130ab5887..d0c5bc4e0703 100644 --- a/drivers/block/z2ram.c +++ b/drivers/block/z2ram.c @@ -197,8 +197,9 @@ static int z2_open(struct block_device *bdev, fmode_t mode) vaddr = (unsigned long)z_remap_nocache_nonser(paddr, size); #endif z2ram_map = - kmalloc((size/Z2RAM_CHUNKSIZE)*sizeof(z2ram_map[0]), - GFP_KERNEL); + kmalloc_array(size / Z2RAM_CHUNKSIZE, + sizeof(z2ram_map[0]), + GFP_KERNEL); if ( z2ram_map == NULL ) { printk( KERN_ERR DEVICE_NAME diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index 9adc8c3eb0fa..a78b8e7085e9 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -2132,7 +2132,7 @@ static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf, */ nr = nframes; do { - cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL); + cgc.buffer = kmalloc_array(nr, CD_FRAMESIZE_RAW, GFP_KERNEL); if (cgc.buffer) break; diff --git a/drivers/char/agp/compat_ioctl.c b/drivers/char/agp/compat_ioctl.c index 2053f70ef66b..52ffe1706ce0 100644 --- a/drivers/char/agp/compat_ioctl.c +++ b/drivers/char/agp/compat_ioctl.c @@ -98,11 +98,15 @@ static int compat_agpioc_reserve_wrap(struct agp_file_private *priv, void __user if (ureserve.seg_count >= 16384) return -EINVAL; - usegment = kmalloc(sizeof(*usegment) * ureserve.seg_count, GFP_KERNEL); + usegment = kmalloc_array(ureserve.seg_count, + sizeof(*usegment), + GFP_KERNEL); if (!usegment) return -ENOMEM; - ksegment = kmalloc(sizeof(*ksegment) * kreserve.seg_count, GFP_KERNEL); + ksegment = kmalloc_array(kreserve.seg_count, + sizeof(*ksegment), + GFP_KERNEL); if (!ksegment) { kfree(usegment); return -ENOMEM; diff --git a/drivers/char/agp/isoch.c b/drivers/char/agp/isoch.c index fc8e1bc3347d..31c374b1b91b 100644 --- a/drivers/char/agp/isoch.c +++ b/drivers/char/agp/isoch.c @@ -93,7 +93,8 @@ static int agp_3_5_isochronous_node_enable(struct agp_bridge_data *bridge, * We'll work with an array of isoch_data's (one for each * device in dev_list) throughout this function. */ - if ((master = kmalloc(ndevs * sizeof(*master), GFP_KERNEL)) == NULL) { + master = kmalloc_array(ndevs, sizeof(*master), GFP_KERNEL); + if (master == NULL) { ret = -ENOMEM; goto get_out; } diff --git a/drivers/char/agp/sgi-agp.c b/drivers/char/agp/sgi-agp.c index 3051c73bc383..e7d5bdc02d93 100644 --- a/drivers/char/agp/sgi-agp.c +++ b/drivers/char/agp/sgi-agp.c @@ -280,9 +280,9 @@ static int agp_sgi_init(void) else return 0; - sgi_tioca_agp_bridges = kmalloc(tioca_gart_found * - sizeof(struct agp_bridge_data *), - GFP_KERNEL); + sgi_tioca_agp_bridges = kmalloc_array(tioca_gart_found, + sizeof(struct agp_bridge_data *), + GFP_KERNEL); if (!sgi_tioca_agp_bridges) return -ENOMEM; diff --git a/drivers/char/agp/uninorth-agp.c b/drivers/char/agp/uninorth-agp.c index 79d8c84693a1..31fcd0430426 100644 --- a/drivers/char/agp/uninorth-agp.c +++ b/drivers/char/agp/uninorth-agp.c @@ -402,7 +402,9 @@ static int uninorth_create_gatt_table(struct agp_bridge_data *bridge) if (table == NULL) return -ENOMEM; - uninorth_priv.pages_arr = kmalloc((1 << page_order) * sizeof(struct page*), GFP_KERNEL); + uninorth_priv.pages_arr = kmalloc_array(1 << page_order, + sizeof(struct page *), + GFP_KERNEL); if (uninorth_priv.pages_arr == NULL) goto enomem; diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 4bf7c06c2343..17084cfcf53e 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -1891,13 +1891,14 @@ static int init_vqs(struct ports_device *portdev) nr_ports = portdev->max_nr_ports; nr_queues = use_multiport(portdev) ? (nr_ports + 1) * 2 : 2; - vqs = kmalloc(nr_queues * sizeof(struct virtqueue *), GFP_KERNEL); - io_callbacks = kmalloc(nr_queues * sizeof(vq_callback_t *), GFP_KERNEL); - io_names = kmalloc(nr_queues * sizeof(char *), GFP_KERNEL); - portdev->in_vqs = kmalloc(nr_ports * sizeof(struct virtqueue *), - GFP_KERNEL); - portdev->out_vqs = kmalloc(nr_ports * sizeof(struct virtqueue *), - GFP_KERNEL); + vqs = kmalloc_array(nr_queues, sizeof(struct virtqueue *), GFP_KERNEL); + io_callbacks = kmalloc_array(nr_queues, sizeof(vq_callback_t *), + GFP_KERNEL); + io_names = kmalloc_array(nr_queues, sizeof(char *), GFP_KERNEL); + portdev->in_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *), + GFP_KERNEL); + portdev->out_vqs = kmalloc_array(nr_ports, sizeof(struct virtqueue *), + GFP_KERNEL); if (!vqs || !io_callbacks || !io_names || !portdev->in_vqs || !portdev->out_vqs) { err = -ENOMEM; diff --git a/drivers/cpufreq/bmips-cpufreq.c b/drivers/cpufreq/bmips-cpufreq.c index 1653151b77df..56a4ebbf00e0 100644 --- a/drivers/cpufreq/bmips-cpufreq.c +++ b/drivers/cpufreq/bmips-cpufreq.c @@ -71,7 +71,7 @@ bmips_cpufreq_get_freq_table(const struct cpufreq_policy *policy) cpu_freq = htp_freq_to_cpu_freq(priv->clk_mult); - table = kmalloc((priv->max_freqs + 1) * sizeof(*table), GFP_KERNEL); + table = kmalloc_array(priv->max_freqs + 1, sizeof(*table), GFP_KERNEL); if (!table) return ERR_PTR(-ENOMEM); diff --git a/drivers/crypto/chelsio/chtls/chtls_io.c b/drivers/crypto/chelsio/chtls/chtls_io.c index 51fc6821cbbf..00c7aab8e7d0 100644 --- a/drivers/crypto/chelsio/chtls/chtls_io.c +++ b/drivers/crypto/chelsio/chtls/chtls_io.c @@ -240,7 +240,7 @@ static int tls_copy_ivs(struct sock *sk, struct sk_buff *skb) } /* generate the IVs */ - ivs = kmalloc(number_of_ivs * CIPHER_BLOCK_SIZE, GFP_ATOMIC); + ivs = kmalloc_array(CIPHER_BLOCK_SIZE, number_of_ivs, GFP_ATOMIC); if (!ivs) return -ENOMEM; get_random_bytes(ivs, number_of_ivs * CIPHER_BLOCK_SIZE); diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c index 981e45692695..cdc96f1bb917 100644 --- a/drivers/crypto/stm32/stm32-hash.c +++ b/drivers/crypto/stm32/stm32-hash.c @@ -970,8 +970,9 @@ static int stm32_hash_export(struct ahash_request *req, void *out) while (!(stm32_hash_read(hdev, HASH_SR) & HASH_SR_DATA_INPUT_READY)) cpu_relax(); - rctx->hw_context = kmalloc(sizeof(u32) * (3 + HASH_CSR_REGISTER_NUMBER), - GFP_KERNEL); + rctx->hw_context = kmalloc_array(3 + HASH_CSR_REGISTER_NUMBER, + sizeof(u32), + GFP_KERNEL); preg = rctx->hw_context; diff --git a/drivers/dma/bestcomm/bestcomm.c b/drivers/dma/bestcomm/bestcomm.c index 7a67b8345092..d91cbbe7a48f 100644 --- a/drivers/dma/bestcomm/bestcomm.c +++ b/drivers/dma/bestcomm/bestcomm.c @@ -87,7 +87,8 @@ bcom_task_alloc(int bd_count, int bd_size, int priv_size) /* Init the BDs, if needed */ if (bd_count) { - tsk->cookie = kmalloc(sizeof(void*) * bd_count, GFP_KERNEL); + tsk->cookie = kmalloc_array(bd_count, sizeof(void *), + GFP_KERNEL); if (!tsk->cookie) goto error; diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index 1993889003fd..4528b560dc4c 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -777,7 +777,7 @@ static int mv_chan_memcpy_self_test(struct mv_xor_chan *mv_chan) struct dmaengine_unmap_data *unmap; int err = 0; - src = kmalloc(sizeof(u8) * PAGE_SIZE, GFP_KERNEL); + src = kmalloc(PAGE_SIZE, GFP_KERNEL); if (!src) return -ENOMEM; diff --git a/drivers/firewire/core-iso.c b/drivers/firewire/core-iso.c index 38c0aa60b2cb..051327a951b1 100644 --- a/drivers/firewire/core-iso.c +++ b/drivers/firewire/core-iso.c @@ -45,8 +45,8 @@ int fw_iso_buffer_alloc(struct fw_iso_buffer *buffer, int page_count) buffer->page_count = 0; buffer->page_count_mapped = 0; - buffer->pages = kmalloc(page_count * sizeof(buffer->pages[0]), - GFP_KERNEL); + buffer->pages = kmalloc_array(page_count, sizeof(buffer->pages[0]), + GFP_KERNEL); if (buffer->pages == NULL) return -ENOMEM; diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c index 60e75e6d9104..82ba110d9d1a 100644 --- a/drivers/firewire/net.c +++ b/drivers/firewire/net.c @@ -1121,7 +1121,7 @@ static int fwnet_broadcast_start(struct fwnet_device *dev) max_receive = 1U << (dev->card->max_receive + 1); num_packets = (FWNET_ISO_PAGE_COUNT * PAGE_SIZE) / max_receive; - ptrptr = kmalloc(sizeof(void *) * num_packets, GFP_KERNEL); + ptrptr = kmalloc_array(num_packets, sizeof(void *), GFP_KERNEL); if (!ptrptr) { retval = -ENOMEM; goto failed; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c index 0ff36d45a597..ea79908dac4c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c @@ -407,7 +407,7 @@ static int kgd_hqd_dump(struct kgd_dev *kgd, (*dump)[i++][1] = RREG32(addr); \ } while (0) - *dump = kmalloc(HQD_N_REGS*2*sizeof(uint32_t), GFP_KERNEL); + *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL); if (*dump == NULL) return -ENOMEM; @@ -504,7 +504,7 @@ static int kgd_hqd_sdma_dump(struct kgd_dev *kgd, #undef HQD_N_REGS #define HQD_N_REGS (19+4) - *dump = kmalloc(HQD_N_REGS*2*sizeof(uint32_t), GFP_KERNEL); + *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL); if (*dump == NULL) return -ENOMEM; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c index 6ef9762b4b00..19dd665e7307 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c @@ -395,7 +395,7 @@ static int kgd_hqd_dump(struct kgd_dev *kgd, (*dump)[i++][1] = RREG32(addr); \ } while (0) - *dump = kmalloc(HQD_N_REGS*2*sizeof(uint32_t), GFP_KERNEL); + *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL); if (*dump == NULL) return -ENOMEM; @@ -491,7 +491,7 @@ static int kgd_hqd_sdma_dump(struct kgd_dev *kgd, #undef HQD_N_REGS #define HQD_N_REGS (19+4+2+3+7) - *dump = kmalloc(HQD_N_REGS*2*sizeof(uint32_t), GFP_KERNEL); + *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL); if (*dump == NULL) return -ENOMEM; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c index f0c0d3953f69..1db60aa5b7f0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c @@ -504,7 +504,7 @@ static int kgd_hqd_dump(struct kgd_dev *kgd, (*dump)[i++][1] = RREG32(addr); \ } while (0) - *dump = kmalloc(HQD_N_REGS*2*sizeof(uint32_t), GFP_KERNEL); + *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL); if (*dump == NULL) return -ENOMEM; @@ -606,7 +606,7 @@ static int kgd_hqd_sdma_dump(struct kgd_dev *kgd, #undef HQD_N_REGS #define HQD_N_REGS (19+6+7+10) - *dump = kmalloc(HQD_N_REGS*2*sizeof(uint32_t), GFP_KERNEL); + *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL); if (*dump == NULL) return -ENOMEM; diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 40e1e24f2ff0..a5808382bdf0 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1633,7 +1633,8 @@ struct edid *drm_do_get_edid(struct drm_connector *connector, edid[EDID_LENGTH-1] += edid[0x7e] - valid_extensions; edid[0x7e] = valid_extensions; - new = kmalloc((valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL); + new = kmalloc_array(valid_extensions + 1, EDID_LENGTH, + GFP_KERNEL); if (!new) goto out; diff --git a/drivers/gpu/drm/gma500/mid_bios.c b/drivers/gpu/drm/gma500/mid_bios.c index 7171b7475f58..237041a37532 100644 --- a/drivers/gpu/drm/gma500/mid_bios.c +++ b/drivers/gpu/drm/gma500/mid_bios.c @@ -239,7 +239,7 @@ static int mid_get_vbt_data_r10(struct drm_psb_private *dev_priv, u32 addr) if (read_vbt_r10(addr, &vbt)) return -1; - gct = kmalloc(sizeof(*gct) * vbt.panel_count, GFP_KERNEL); + gct = kmalloc_array(vbt.panel_count, sizeof(*gct), GFP_KERNEL); if (!gct) return -ENOMEM; diff --git a/drivers/gpu/drm/nouveau/nvif/mmu.c b/drivers/gpu/drm/nouveau/nvif/mmu.c index 358ac4f3cf91..ae08a1ca8044 100644 --- a/drivers/gpu/drm/nouveau/nvif/mmu.c +++ b/drivers/gpu/drm/nouveau/nvif/mmu.c @@ -65,12 +65,15 @@ nvif_mmu_init(struct nvif_object *parent, s32 oclass, struct nvif_mmu *mmu) goto done; mmu->mem = mems[ret].oclass; - mmu->heap = kmalloc(sizeof(*mmu->heap) * mmu->heap_nr, GFP_KERNEL); - mmu->type = kmalloc(sizeof(*mmu->type) * mmu->type_nr, GFP_KERNEL); + mmu->heap = kmalloc_array(mmu->heap_nr, sizeof(*mmu->heap), + GFP_KERNEL); + mmu->type = kmalloc_array(mmu->type_nr, sizeof(*mmu->type), + GFP_KERNEL); if (ret = -ENOMEM, !mmu->heap || !mmu->type) goto done; - mmu->kind = kmalloc(sizeof(*mmu->kind) * mmu->kind_nr, GFP_KERNEL); + mmu->kind = kmalloc_array(mmu->kind_nr, sizeof(*mmu->kind), + GFP_KERNEL); if (!mmu->kind && mmu->kind_nr) goto done; diff --git a/drivers/gpu/drm/nouveau/nvif/vmm.c b/drivers/gpu/drm/nouveau/nvif/vmm.c index 191832be6c65..6b9c5776547f 100644 --- a/drivers/gpu/drm/nouveau/nvif/vmm.c +++ b/drivers/gpu/drm/nouveau/nvif/vmm.c @@ -138,7 +138,8 @@ nvif_vmm_init(struct nvif_mmu *mmu, s32 oclass, u64 addr, u64 size, vmm->limit = args->size; vmm->page_nr = args->page_nr; - vmm->page = kmalloc(sizeof(*vmm->page) * vmm->page_nr, GFP_KERNEL); + vmm->page = kmalloc_array(vmm->page_nr, sizeof(*vmm->page), + GFP_KERNEL); if (!vmm->page) { ret = -ENOMEM; goto done; diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c index 73e463ed55c3..dea444d48f94 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/iccsense.c @@ -73,7 +73,8 @@ nvbios_iccsense_parse(struct nvkm_bios *bios, struct nvbios_iccsense *iccsense) } iccsense->nr_entry = cnt; - iccsense->rail = kmalloc(sizeof(struct pwr_rail_t) * cnt, GFP_KERNEL); + iccsense->rail = kmalloc_array(cnt, sizeof(struct pwr_rail_t), + GFP_KERNEL); if (!iccsense->rail) return -ENOMEM; diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c index 920b3d347803..bbfde1cb3a17 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c @@ -171,7 +171,7 @@ gt215_link_train(struct gt215_ram *ram) return -ENOSYS; /* XXX: Multiple partitions? */ - result = kmalloc(64 * sizeof(u32), GFP_KERNEL); + result = kmalloc_array(64, sizeof(u32), GFP_KERNEL); if (!result) return -ENOMEM; diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c index 401c02e9e6b2..f92fe205550b 100644 --- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c +++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c @@ -940,8 +940,8 @@ int tiler_map_show(struct seq_file *s, void *arg) h_adj = omap_dmm->container_height / ydiv; w_adj = omap_dmm->container_width / xdiv; - map = kmalloc(h_adj * sizeof(*map), GFP_KERNEL); - global_map = kmalloc((w_adj + 1) * h_adj, GFP_KERNEL); + map = kmalloc_array(h_adj, sizeof(*map), GFP_KERNEL); + global_map = kmalloc_array(w_adj + 1, h_adj, GFP_KERNEL); if (!map || !global_map) goto error; diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index 0faf042b82e1..3ea716875151 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -244,7 +244,7 @@ static int omap_gem_attach_pages(struct drm_gem_object *obj) * DSS, GPU, etc. are not cache coherent: */ if (omap_obj->flags & (OMAP_BO_WC|OMAP_BO_UNCACHED)) { - addrs = kmalloc(npages * sizeof(*addrs), GFP_KERNEL); + addrs = kmalloc_array(npages, sizeof(*addrs), GFP_KERNEL); if (!addrs) { ret = -ENOMEM; goto free_pages; diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c index c5716a0ca3b8..771250aed78d 100644 --- a/drivers/gpu/drm/qxl/qxl_kms.c +++ b/drivers/gpu/drm/qxl/qxl_kms.c @@ -200,8 +200,8 @@ int qxl_device_init(struct qxl_device *qdev, (~(uint64_t)0) >> (qdev->slot_id_bits + qdev->slot_gen_bits); qdev->mem_slots = - kmalloc(qdev->n_mem_slots * sizeof(struct qxl_memslot), - GFP_KERNEL); + kmalloc_array(qdev->n_mem_slots, sizeof(struct qxl_memslot), + GFP_KERNEL); idr_init(&qdev->release_idr); spin_lock_init(&qdev->release_idr_lock); diff --git a/drivers/gpu/drm/savage/savage_bci.c b/drivers/gpu/drm/savage/savage_bci.c index 2a5b8466d806..35dc74883f83 100644 --- a/drivers/gpu/drm/savage/savage_bci.c +++ b/drivers/gpu/drm/savage/savage_bci.c @@ -298,8 +298,9 @@ static int savage_dma_init(drm_savage_private_t * dev_priv) dev_priv->nr_dma_pages = dev_priv->cmd_dma->size / (SAVAGE_DMA_PAGE_SIZE * 4); - dev_priv->dma_pages = kmalloc(sizeof(drm_savage_dma_page_t) * - dev_priv->nr_dma_pages, GFP_KERNEL); + dev_priv->dma_pages = kmalloc_array(dev_priv->nr_dma_pages, + sizeof(drm_savage_dma_page_t), + GFP_KERNEL); if (dev_priv->dma_pages == NULL) return -ENOMEM; diff --git a/drivers/gpu/drm/tinydrm/repaper.c b/drivers/gpu/drm/tinydrm/repaper.c index 1ee6855212a0..50a1d4216ce7 100644 --- a/drivers/gpu/drm/tinydrm/repaper.c +++ b/drivers/gpu/drm/tinydrm/repaper.c @@ -548,7 +548,7 @@ static int repaper_fb_dirty(struct drm_framebuffer *fb, DRM_DEBUG("Flushing [FB:%d] st=%ums\n", fb->base.id, epd->factored_stage_time); - buf = kmalloc(fb->width * fb->height, GFP_KERNEL); + buf = kmalloc_array(fb->width, fb->height, GFP_KERNEL); if (!buf) return -ENOMEM; diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c index 06c94e3a5f15..6e2d1300b457 100644 --- a/drivers/gpu/drm/ttm/ttm_page_alloc.c +++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c @@ -348,8 +348,9 @@ static int ttm_page_pool_free(struct ttm_page_pool *pool, unsigned nr_free, if (use_static) pages_to_free = static_buf; else - pages_to_free = kmalloc(npages_to_free * sizeof(struct page *), - GFP_KERNEL); + pages_to_free = kmalloc_array(npages_to_free, + sizeof(struct page *), + GFP_KERNEL); if (!pages_to_free) { pr_debug("Failed to allocate memory for pool free operation\n"); return 0; @@ -547,7 +548,8 @@ static int ttm_alloc_new_pages(struct list_head *pages, gfp_t gfp_flags, unsigned max_cpages = min(count << order, (unsigned)NUM_PAGES_TO_ALLOC); /* allocate array for page caching change */ - caching_array = kmalloc(max_cpages*sizeof(struct page *), GFP_KERNEL); + caching_array = kmalloc_array(max_cpages, sizeof(struct page *), + GFP_KERNEL); if (!caching_array) { pr_debug("Unable to allocate table for new pages\n"); diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c index f63d99c302e4..3f14c1cc0789 100644 --- a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c +++ b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c @@ -463,8 +463,9 @@ static unsigned ttm_dma_page_pool_free(struct dma_pool *pool, unsigned nr_free, if (use_static) pages_to_free = static_buf; else - pages_to_free = kmalloc(npages_to_free * sizeof(struct page *), - GFP_KERNEL); + pages_to_free = kmalloc_array(npages_to_free, + sizeof(struct page *), + GFP_KERNEL); if (!pages_to_free) { pr_debug("%s: Failed to allocate memory for pool free operation\n", @@ -753,7 +754,8 @@ static int ttm_dma_pool_alloc_new_pages(struct dma_pool *pool, (unsigned)(PAGE_SIZE/sizeof(struct page *))); /* allocate array for page caching change */ - caching_array = kmalloc(max_cpages*sizeof(struct page *), GFP_KERNEL); + caching_array = kmalloc_array(max_cpages, sizeof(struct page *), + GFP_KERNEL); if (!caching_array) { pr_debug("%s: Unable to allocate table for new pages\n", diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c index 71d44c357d35..1d34619eb3fe 100644 --- a/drivers/gpu/drm/vc4/vc4_plane.c +++ b/drivers/gpu/drm/vc4/vc4_plane.c @@ -209,7 +209,7 @@ static void vc4_dlist_write(struct vc4_plane_state *vc4_state, u32 val) { if (vc4_state->dlist_count == vc4_state->dlist_size) { u32 new_size = max(4u, vc4_state->dlist_count * 2); - u32 *new_dlist = kmalloc(new_size * 4, GFP_KERNEL); + u32 *new_dlist = kmalloc_array(new_size, 4, GFP_KERNEL); if (!new_dlist) return; diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 355dc7e49562..f858cc72011d 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -134,8 +134,11 @@ static int open_collection(struct hid_parser *parser, unsigned type) } if (parser->device->maxcollection == parser->device->collection_size) { - collection = kmalloc(sizeof(struct hid_collection) * - parser->device->collection_size * 2, GFP_KERNEL); + collection = kmalloc( + array3_size(sizeof(struct hid_collection), + parser->device->collection_size, + 2), + GFP_KERNEL); if (collection == NULL) { hid_err(parser->device, "failed to reallocate collection array\n"); return -ENOMEM; @@ -1278,7 +1281,7 @@ static void hid_input_field(struct hid_device *hid, struct hid_field *field, __s32 max = field->logical_maximum; __s32 *value; - value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC); + value = kmalloc_array(count, sizeof(__s32), GFP_ATOMIC); if (!value) return; diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c index 4f4e7a08a07b..6d99534ac691 100644 --- a/drivers/hid/hid-debug.c +++ b/drivers/hid/hid-debug.c @@ -685,7 +685,7 @@ void hid_dump_report(struct hid_device *hid, int type, u8 *data, char *buf; unsigned int i; - buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC); + buf = kmalloc(HID_DEBUG_BUFSIZE, GFP_ATOMIC); if (!buf) return; diff --git a/drivers/hid/hid-picolcd_fb.c b/drivers/hid/hid-picolcd_fb.c index 7f965e231433..864a084b6cba 100644 --- a/drivers/hid/hid-picolcd_fb.c +++ b/drivers/hid/hid-picolcd_fb.c @@ -394,7 +394,8 @@ static int picolcd_set_par(struct fb_info *info) return -EINVAL; o_fb = fbdata->bitmap; - tmp_fb = kmalloc(PICOLCDFB_SIZE*info->var.bits_per_pixel, GFP_KERNEL); + tmp_fb = kmalloc_array(PICOLCDFB_SIZE, info->var.bits_per_pixel, + GFP_KERNEL); if (!tmp_fb) return -ENOMEM; diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index b39844adea47..4a44e48e08b2 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -218,7 +218,7 @@ static ssize_t hidraw_get_report(struct file *file, char __user *buffer, size_t goto out; } - buf = kmalloc(count * sizeof(__u8), GFP_KERNEL); + buf = kmalloc(count, GFP_KERNEL); if (!buf) { ret = -ENOMEM; goto out; diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index 1667b6e7674f..1aca742fde4a 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c @@ -244,7 +244,7 @@ static noinline int i2cdev_ioctl_rdwr(struct i2c_client *client, u8 __user **data_ptrs; int i, res; - data_ptrs = kmalloc(nmsgs * sizeof(u8 __user *), GFP_KERNEL); + data_ptrs = kmalloc_array(nmsgs, sizeof(u8 __user *), GFP_KERNEL); if (data_ptrs == NULL) { kfree(msgs); return -ENOMEM; diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c index 56d7bc228cb3..416a2f353071 100644 --- a/drivers/ide/ide-probe.c +++ b/drivers/ide/ide-probe.c @@ -985,8 +985,9 @@ static int hwif_init(ide_hwif_t *hwif) if (!hwif->sg_max_nents) hwif->sg_max_nents = PRD_ENTRIES; - hwif->sg_table = kmalloc(sizeof(struct scatterlist)*hwif->sg_max_nents, - GFP_KERNEL); + hwif->sg_table = kmalloc_array(hwif->sg_max_nents, + sizeof(struct scatterlist), + GFP_KERNEL); if (!hwif->sg_table) { printk(KERN_ERR "%s: unable to allocate SG table.\n", hwif->name); goto out; diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 6813ee717a38..bff10ab141b0 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -1855,8 +1855,8 @@ static struct rdma_id_private *cma_new_conn_id(struct rdma_cm_id *listen_id, rt = &id->route; rt->num_paths = ib_event->param.req_rcvd.alternate_path ? 2 : 1; - rt->path_rec = kmalloc(sizeof *rt->path_rec * rt->num_paths, - GFP_KERNEL); + rt->path_rec = kmalloc_array(rt->num_paths, sizeof(*rt->path_rec), + GFP_KERNEL); if (!rt->path_rec) goto err; diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c index a0a9ed719031..a077500f7f32 100644 --- a/drivers/infiniband/core/fmr_pool.c +++ b/drivers/infiniband/core/fmr_pool.c @@ -235,8 +235,9 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd, if (params->cache) { pool->cache_bucket = - kmalloc(IB_FMR_HASH_SIZE * sizeof *pool->cache_bucket, - GFP_KERNEL); + kmalloc_array(IB_FMR_HASH_SIZE, + sizeof(*pool->cache_bucket), + GFP_KERNEL); if (!pool->cache_bucket) { ret = -ENOMEM; goto out_free_pool; diff --git a/drivers/infiniband/hw/cxgb4/id_table.c b/drivers/infiniband/hw/cxgb4/id_table.c index 5c2cfdea06ad..724d23297b35 100644 --- a/drivers/infiniband/hw/cxgb4/id_table.c +++ b/drivers/infiniband/hw/cxgb4/id_table.c @@ -92,8 +92,8 @@ int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num, alloc->last = 0; alloc->max = num; spin_lock_init(&alloc->lock); - alloc->table = kmalloc(BITS_TO_LONGS(num) * sizeof(long), - GFP_KERNEL); + alloc->table = kmalloc_array(BITS_TO_LONGS(num), sizeof(long), + GFP_KERNEL); if (!alloc->table) return -ENOMEM; diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index f839bf3b1497..4ec519afc45b 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -302,7 +302,8 @@ static int mlx4_ib_add_gid(const union ib_gid *gid, ctx->refcount++; } if (!ret && hw_update) { - gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC); + gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids), + GFP_ATOMIC); if (!gids) { ret = -ENOMEM; } else { @@ -355,7 +356,8 @@ static int mlx4_ib_del_gid(const struct ib_gid_attr *attr, void **context) if (!ret && hw_update) { int i; - gids = kmalloc(sizeof(*gids) * MLX4_MAX_PORT_GIDS, GFP_ATOMIC); + gids = kmalloc_array(MLX4_MAX_PORT_GIDS, sizeof(*gids), + GFP_ATOMIC); if (!gids) { ret = -ENOMEM; } else { @@ -2872,9 +2874,9 @@ static void *mlx4_ib_add(struct mlx4_dev *dev) goto err_counter; ibdev->ib_uc_qpns_bitmap = - kmalloc(BITS_TO_LONGS(ibdev->steer_qpn_count) * - sizeof(long), - GFP_KERNEL); + kmalloc_array(BITS_TO_LONGS(ibdev->steer_qpn_count), + sizeof(long), + GFP_KERNEL); if (!ibdev->ib_uc_qpns_bitmap) goto err_steer_qp_release; diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index cd2c08c45334..3b8045fd23ed 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -573,8 +573,8 @@ static int alloc_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp) int i; qp->sqp_proxy_rcv = - kmalloc(sizeof (struct mlx4_ib_buf) * qp->rq.wqe_cnt, - GFP_KERNEL); + kmalloc_array(qp->rq.wqe_cnt, sizeof(struct mlx4_ib_buf), + GFP_KERNEL); if (!qp->sqp_proxy_rcv) return -ENOMEM; for (i = 0; i < qp->rq.wqe_cnt; i++) { diff --git a/drivers/infiniband/hw/mthca/mthca_allocator.c b/drivers/infiniband/hw/mthca/mthca_allocator.c index b4e0cf4e95cd..aaf10dd5364d 100644 --- a/drivers/infiniband/hw/mthca/mthca_allocator.c +++ b/drivers/infiniband/hw/mthca/mthca_allocator.c @@ -90,8 +90,8 @@ int mthca_alloc_init(struct mthca_alloc *alloc, u32 num, u32 mask, alloc->max = num; alloc->mask = mask; spin_lock_init(&alloc->lock); - alloc->table = kmalloc(BITS_TO_LONGS(num) * sizeof (long), - GFP_KERNEL); + alloc->table = kmalloc_array(BITS_TO_LONGS(num), sizeof(long), + GFP_KERNEL); if (!alloc->table) return -ENOMEM; @@ -162,7 +162,8 @@ int mthca_array_init(struct mthca_array *array, int nent) int npage = (nent * sizeof (void *) + PAGE_SIZE - 1) / PAGE_SIZE; int i; - array->page_list = kmalloc(npage * sizeof *array->page_list, GFP_KERNEL); + array->page_list = kmalloc_array(npage, sizeof(*array->page_list), + GFP_KERNEL); if (!array->page_list) return -ENOMEM; @@ -220,7 +221,8 @@ int mthca_buf_alloc(struct mthca_dev *dev, int size, int max_direct, npages *= 2; } - dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL); + dma_list = kmalloc_array(npages, sizeof(*dma_list), + GFP_KERNEL); if (!dma_list) goto err_free; @@ -231,12 +233,14 @@ int mthca_buf_alloc(struct mthca_dev *dev, int size, int max_direct, npages = (size + PAGE_SIZE - 1) / PAGE_SIZE; shift = PAGE_SHIFT; - dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL); + dma_list = kmalloc_array(npages, sizeof(*dma_list), + GFP_KERNEL); if (!dma_list) return -ENOMEM; - buf->page_list = kmalloc(npages * sizeof *buf->page_list, - GFP_KERNEL); + buf->page_list = kmalloc_array(npages, + sizeof(*buf->page_list), + GFP_KERNEL); if (!buf->page_list) goto err_out; diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c index 419a2a20c047..83aa47eb81a9 100644 --- a/drivers/infiniband/hw/mthca/mthca_cmd.c +++ b/drivers/infiniband/hw/mthca/mthca_cmd.c @@ -565,9 +565,9 @@ int mthca_cmd_use_events(struct mthca_dev *dev) { int i; - dev->cmd.context = kmalloc(dev->cmd.max_cmds * - sizeof (struct mthca_cmd_context), - GFP_KERNEL); + dev->cmd.context = kmalloc_array(dev->cmd.max_cmds, + sizeof(struct mthca_cmd_context), + GFP_KERNEL); if (!dev->cmd.context) return -ENOMEM; diff --git a/drivers/infiniband/hw/mthca/mthca_eq.c b/drivers/infiniband/hw/mthca/mthca_eq.c index 690201738993..30400ea4808b 100644 --- a/drivers/infiniband/hw/mthca/mthca_eq.c +++ b/drivers/infiniband/hw/mthca/mthca_eq.c @@ -479,15 +479,15 @@ static int mthca_create_eq(struct mthca_dev *dev, eq->nent = roundup_pow_of_two(max(nent, 2)); npages = ALIGN(eq->nent * MTHCA_EQ_ENTRY_SIZE, PAGE_SIZE) / PAGE_SIZE; - eq->page_list = kmalloc(npages * sizeof *eq->page_list, - GFP_KERNEL); + eq->page_list = kmalloc_array(npages, sizeof(*eq->page_list), + GFP_KERNEL); if (!eq->page_list) goto err_out; for (i = 0; i < npages; ++i) eq->page_list[i].buf = NULL; - dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL); + dma_list = kmalloc_array(npages, sizeof(*dma_list), GFP_KERNEL); if (!dma_list) goto err_out_free; diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniband/hw/mthca/mthca_memfree.c index 7a31be3c3e73..cc9c0c8ccba3 100644 --- a/drivers/infiniband/hw/mthca/mthca_memfree.c +++ b/drivers/infiniband/hw/mthca/mthca_memfree.c @@ -712,9 +712,9 @@ int mthca_init_db_tab(struct mthca_dev *dev) dev->db_tab->max_group1 = 0; dev->db_tab->min_group2 = dev->db_tab->npages - 1; - dev->db_tab->page = kmalloc(dev->db_tab->npages * - sizeof *dev->db_tab->page, - GFP_KERNEL); + dev->db_tab->page = kmalloc_array(dev->db_tab->npages, + sizeof(*dev->db_tab->page), + GFP_KERNEL); if (!dev->db_tab->page) { kfree(dev->db_tab); return -ENOMEM; diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c index ed9a989e501b..dc3c2346045c 100644 --- a/drivers/infiniband/hw/mthca/mthca_mr.c +++ b/drivers/infiniband/hw/mthca/mthca_mr.c @@ -153,7 +153,7 @@ static int mthca_buddy_init(struct mthca_buddy *buddy, int max_order) for (i = 0; i <= buddy->max_order; ++i) { s = BITS_TO_LONGS(1 << (buddy->max_order - i)); - buddy->bits[i] = kmalloc(s * sizeof (long), GFP_KERNEL); + buddy->bits[i] = kmalloc_array(s, sizeof(long), GFP_KERNEL); if (!buddy->bits[i]) goto err_out_free; bitmap_zero(buddy->bits[i], diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c index d21960cd9a49..af1c49d70b89 100644 --- a/drivers/infiniband/hw/mthca/mthca_qp.c +++ b/drivers/infiniband/hw/mthca/mthca_qp.c @@ -1054,8 +1054,8 @@ static int mthca_alloc_wqe_buf(struct mthca_dev *dev, size = PAGE_ALIGN(qp->send_wqe_offset + (qp->sq.max << qp->sq.wqe_shift)); - qp->wrid = kmalloc((qp->rq.max + qp->sq.max) * sizeof (u64), - GFP_KERNEL); + qp->wrid = kmalloc_array(qp->rq.max + qp->sq.max, sizeof(u64), + GFP_KERNEL); if (!qp->wrid) goto err_out; diff --git a/drivers/infiniband/hw/mthca/mthca_srq.c b/drivers/infiniband/hw/mthca/mthca_srq.c index d22f970480c0..f79732bc73b4 100644 --- a/drivers/infiniband/hw/mthca/mthca_srq.c +++ b/drivers/infiniband/hw/mthca/mthca_srq.c @@ -155,7 +155,7 @@ static int mthca_alloc_srq_buf(struct mthca_dev *dev, struct mthca_pd *pd, if (pd->ibpd.uobject) return 0; - srq->wrid = kmalloc(srq->max * sizeof (u64), GFP_KERNEL); + srq->wrid = kmalloc_array(srq->max, sizeof(u64), GFP_KERNEL); if (!srq->wrid) return -ENOMEM; diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c index 007d5e8a0121..61014e251555 100644 --- a/drivers/infiniband/hw/nes/nes_nic.c +++ b/drivers/infiniband/hw/nes/nes_nic.c @@ -904,7 +904,7 @@ static void nes_netdev_set_multicast_list(struct net_device *netdev) int i; struct netdev_hw_addr *ha; - addrs = kmalloc(ETH_ALEN * mc_count, GFP_ATOMIC); + addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC); if (!addrs) { set_allmulti(nesdev, nic_active_bit); goto unlock; diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index 784ed6b09a46..eb9f9e9e213b 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -1873,7 +1873,8 @@ struct ib_srq *ocrdma_create_srq(struct ib_pd *ibpd, srq->bit_fields_len = (srq->rq.max_cnt / 32) + (srq->rq.max_cnt % 32 ? 1 : 0); srq->idx_bit_fields = - kmalloc(srq->bit_fields_len * sizeof(u32), GFP_KERNEL); + kmalloc_array(srq->bit_fields_len, sizeof(u32), + GFP_KERNEL); if (srq->idx_bit_fields == NULL) goto arm_err; memset(srq->idx_bit_fields, 0xff, diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c index 8a15e5c7dd91..fb1ff59f40bd 100644 --- a/drivers/infiniband/hw/qib/qib_iba6120.c +++ b/drivers/infiniband/hw/qib/qib_iba6120.c @@ -2496,15 +2496,16 @@ static void init_6120_cntrnames(struct qib_devdata *dd) dd->cspec->cntrnamelen = sizeof(cntr6120names) - 1; else dd->cspec->cntrnamelen = 1 + s - cntr6120names; - dd->cspec->cntrs = kmalloc(dd->cspec->ncntrs - * sizeof(u64), GFP_KERNEL); + dd->cspec->cntrs = kmalloc_array(dd->cspec->ncntrs, sizeof(u64), + GFP_KERNEL); for (i = 0, s = (char *)portcntr6120names; s; i++) s = strchr(s + 1, '\n'); dd->cspec->nportcntrs = i - 1; dd->cspec->portcntrnamelen = sizeof(portcntr6120names) - 1; - dd->cspec->portcntrs = kmalloc(dd->cspec->nportcntrs - * sizeof(u64), GFP_KERNEL); + dd->cspec->portcntrs = kmalloc_array(dd->cspec->nportcntrs, + sizeof(u64), + GFP_KERNEL); } static u32 qib_read_6120cntrs(struct qib_devdata *dd, loff_t pos, char **namep, diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c index bdff2326731e..163a57a88742 100644 --- a/drivers/infiniband/hw/qib/qib_iba7220.c +++ b/drivers/infiniband/hw/qib/qib_iba7220.c @@ -3147,15 +3147,16 @@ static void init_7220_cntrnames(struct qib_devdata *dd) dd->cspec->cntrnamelen = sizeof(cntr7220names) - 1; else dd->cspec->cntrnamelen = 1 + s - cntr7220names; - dd->cspec->cntrs = kmalloc(dd->cspec->ncntrs - * sizeof(u64), GFP_KERNEL); + dd->cspec->cntrs = kmalloc_array(dd->cspec->ncntrs, sizeof(u64), + GFP_KERNEL); for (i = 0, s = (char *)portcntr7220names; s; i++) s = strchr(s + 1, '\n'); dd->cspec->nportcntrs = i - 1; dd->cspec->portcntrnamelen = sizeof(portcntr7220names) - 1; - dd->cspec->portcntrs = kmalloc(dd->cspec->nportcntrs - * sizeof(u64), GFP_KERNEL); + dd->cspec->portcntrs = kmalloc_array(dd->cspec->nportcntrs, + sizeof(u64), + GFP_KERNEL); } static u32 qib_read_7220cntrs(struct qib_devdata *dd, loff_t pos, char **namep, diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index 8414ae44a518..27155d92f810 100644 --- a/drivers/infiniband/hw/qib/qib_iba7322.c +++ b/drivers/infiniband/hw/qib/qib_iba7322.c @@ -3648,8 +3648,9 @@ static int qib_do_7322_reset(struct qib_devdata *dd) if (msix_entries) { /* can be up to 512 bytes, too big for stack */ - msix_vecsave = kmalloc(2 * dd->cspec->num_msix_entries * - sizeof(u64), GFP_KERNEL); + msix_vecsave = kmalloc_array(2 * dd->cspec->num_msix_entries, + sizeof(u64), + GFP_KERNEL); } /* @@ -5009,16 +5010,17 @@ static void init_7322_cntrnames(struct qib_devdata *dd) dd->cspec->cntrnamelen = sizeof(cntr7322names) - 1; else dd->cspec->cntrnamelen = 1 + s - cntr7322names; - dd->cspec->cntrs = kmalloc(dd->cspec->ncntrs - * sizeof(u64), GFP_KERNEL); + dd->cspec->cntrs = kmalloc_array(dd->cspec->ncntrs, sizeof(u64), + GFP_KERNEL); for (i = 0, s = (char *)portcntr7322names; s; i++) s = strchr(s + 1, '\n'); dd->cspec->nportcntrs = i - 1; dd->cspec->portcntrnamelen = sizeof(portcntr7322names) - 1; for (i = 0; i < dd->num_pports; ++i) { - dd->pport[i].cpspec->portcntrs = kmalloc(dd->cspec->nportcntrs - * sizeof(u64), GFP_KERNEL); + dd->pport[i].cpspec->portcntrs = + kmalloc_array(dd->cspec->nportcntrs, sizeof(u64), + GFP_KERNEL); } } @@ -6412,12 +6414,15 @@ static int qib_init_7322_variables(struct qib_devdata *dd) sbufcnt = dd->piobcnt2k + dd->piobcnt4k + NUM_VL15_BUFS + BITS_PER_LONG - 1; sbufcnt /= BITS_PER_LONG; - dd->cspec->sendchkenable = kmalloc(sbufcnt * - sizeof(*dd->cspec->sendchkenable), GFP_KERNEL); - dd->cspec->sendgrhchk = kmalloc(sbufcnt * - sizeof(*dd->cspec->sendgrhchk), GFP_KERNEL); - dd->cspec->sendibchk = kmalloc(sbufcnt * - sizeof(*dd->cspec->sendibchk), GFP_KERNEL); + dd->cspec->sendchkenable = + kmalloc_array(sbufcnt, sizeof(*dd->cspec->sendchkenable), + GFP_KERNEL); + dd->cspec->sendgrhchk = + kmalloc_array(sbufcnt, sizeof(*dd->cspec->sendgrhchk), + GFP_KERNEL); + dd->cspec->sendibchk = + kmalloc_array(sbufcnt, sizeof(*dd->cspec->sendibchk), + GFP_KERNEL); if (!dd->cspec->sendchkenable || !dd->cspec->sendgrhchk || !dd->cspec->sendibchk) { ret = -ENOMEM; diff --git a/drivers/infiniband/ulp/iser/iser_initiator.c b/drivers/infiniband/ulp/iser/iser_initiator.c index ca858d6bd37a..2f6388596f88 100644 --- a/drivers/infiniband/ulp/iser/iser_initiator.c +++ b/drivers/infiniband/ulp/iser/iser_initiator.c @@ -258,8 +258,9 @@ int iser_alloc_rx_descriptors(struct iser_conn *iser_conn, goto alloc_login_buf_fail; iser_conn->num_rx_descs = session->cmds_max; - iser_conn->rx_descs = kmalloc(iser_conn->num_rx_descs * - sizeof(struct iser_rx_desc), GFP_KERNEL); + iser_conn->rx_descs = kmalloc_array(iser_conn->num_rx_descs, + sizeof(struct iser_rx_desc), + GFP_KERNEL); if (!iser_conn->rx_descs) goto rx_desc_alloc_fail; diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index c35d2cd37d70..9786b24b956f 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -1035,16 +1035,17 @@ static int srp_alloc_req_data(struct srp_rdma_ch *ch) for (i = 0; i < target->req_ring_size; ++i) { req = &ch->req_ring[i]; - mr_list = kmalloc(target->mr_per_cmd * sizeof(void *), - GFP_KERNEL); + mr_list = kmalloc_array(target->mr_per_cmd, sizeof(void *), + GFP_KERNEL); if (!mr_list) goto out; if (srp_dev->use_fast_reg) { req->fr_list = mr_list; } else { req->fmr_list = mr_list; - req->map_page = kmalloc(srp_dev->max_pages_per_mr * - sizeof(void *), GFP_KERNEL); + req->map_page = kmalloc_array(srp_dev->max_pages_per_mr, + sizeof(void *), + GFP_KERNEL); if (!req->map_page) goto out; } diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c index dfec0e1fac29..3081c629a7f7 100644 --- a/drivers/infiniband/ulp/srpt/ib_srpt.c +++ b/drivers/infiniband/ulp/srpt/ib_srpt.c @@ -720,7 +720,7 @@ static struct srpt_ioctx **srpt_alloc_ioctx_ring(struct srpt_device *sdev, WARN_ON(ioctx_size != sizeof(struct srpt_recv_ioctx) && ioctx_size != sizeof(struct srpt_send_ioctx)); - ring = kmalloc(ring_size * sizeof(ring[0]), GFP_KERNEL); + ring = kmalloc_array(ring_size, sizeof(ring[0]), GFP_KERNEL); if (!ring) goto out; for (i = 0; i < ring_size; ++i) { diff --git a/drivers/input/joystick/joydump.c b/drivers/input/joystick/joydump.c index d1c6e4846a4a..7f4dff9a566f 100644 --- a/drivers/input/joystick/joydump.c +++ b/drivers/input/joystick/joydump.c @@ -80,7 +80,7 @@ static int joydump_connect(struct gameport *gameport, struct gameport_driver *dr timeout = gameport_time(gameport, 10000); /* 10 ms */ - buf = kmalloc(BUF_SIZE * sizeof(struct joydump), GFP_KERNEL); + buf = kmalloc_array(BUF_SIZE, sizeof(struct joydump), GFP_KERNEL); if (!buf) { printk(KERN_INFO "joydump: no memory for testing\n"); goto jd_end; diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 5416f2b2ac21..4e7ce74e558d 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -3567,8 +3567,8 @@ static void __init acpi_table_parse_srat_its(void) if (count <= 0) return; - its_srat_maps = kmalloc(count * sizeof(struct its_srat_map), - GFP_KERNEL); + its_srat_maps = kmalloc_array(count, sizeof(struct its_srat_map), + GFP_KERNEL); if (!its_srat_maps) { pr_warn("SRAT: Failed to allocate memory for its_srat_maps!\n"); return; diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c index 7ac51798949d..ee510f901720 100644 --- a/drivers/isdn/capi/capidrv.c +++ b/drivers/isdn/capi/capidrv.c @@ -2268,7 +2268,8 @@ static int capidrv_addcontr(u16 contr, struct capi_profile *profp) strcpy(card->name, id); card->contrnr = contr; card->nbchan = profp->nbchannel; - card->bchans = kmalloc(sizeof(capidrv_bchan) * card->nbchan, GFP_ATOMIC); + card->bchans = kmalloc_array(card->nbchan, sizeof(capidrv_bchan), + GFP_ATOMIC); if (!card->bchans) { printk(KERN_WARNING "capidrv: (%s) Could not allocate bchan-structs.\n", id); diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c index 56748af78c04..fd13ed44a54e 100644 --- a/drivers/isdn/gigaset/capi.c +++ b/drivers/isdn/gigaset/capi.c @@ -252,7 +252,7 @@ static inline void dump_rawmsg(enum debuglevel level, const char *tag, return; if (l > 64) l = 64; /* arbitrary limit */ - dbgline = kmalloc(3 * l, GFP_ATOMIC); + dbgline = kmalloc_array(3, l, GFP_ATOMIC); if (!dbgline) return; for (i = 0; i < l; i++) { @@ -272,7 +272,7 @@ static inline void dump_rawmsg(enum debuglevel level, const char *tag, return; if (l > 64) l = 64; /* arbitrary limit */ - dbgline = kmalloc(3 * l, GFP_ATOMIC); + dbgline = kmalloc_array(3, l, GFP_ATOMIC); if (!dbgline) return; data += CAPIMSG_LEN(data); diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c index 15482c5de33c..76b5407b5277 100644 --- a/drivers/isdn/gigaset/common.c +++ b/drivers/isdn/gigaset/common.c @@ -710,7 +710,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, cs->mode = M_UNKNOWN; cs->mstate = MS_UNINITIALIZED; - cs->bcs = kmalloc(channels * sizeof(struct bc_state), GFP_KERNEL); + cs->bcs = kmalloc_array(channels, sizeof(struct bc_state), GFP_KERNEL); cs->inbuf = kmalloc(sizeof(struct inbuf_t), GFP_KERNEL); if (!cs->bcs || !cs->inbuf) { pr_err("out of memory\n"); @@ -1089,7 +1089,7 @@ struct gigaset_driver *gigaset_initdriver(unsigned minor, unsigned minors, drv->owner = owner; INIT_LIST_HEAD(&drv->list); - drv->cs = kmalloc(minors * sizeof *drv->cs, GFP_KERNEL); + drv->cs = kmalloc_array(minors, sizeof(*drv->cs), GFP_KERNEL); if (!drv->cs) goto error; diff --git a/drivers/isdn/hisax/hfc_2bds0.c b/drivers/isdn/hisax/hfc_2bds0.c index 86b82172e992..3715fa0343db 100644 --- a/drivers/isdn/hisax/hfc_2bds0.c +++ b/drivers/isdn/hisax/hfc_2bds0.c @@ -1024,7 +1024,7 @@ static unsigned int int i; unsigned *send; - if (!(send = kmalloc(cnt * sizeof(unsigned int), GFP_ATOMIC))) { + if (!(send = kmalloc_array(cnt, sizeof(unsigned int), GFP_ATOMIC))) { printk(KERN_WARNING "HiSax: No memory for hfcd.send\n"); return (NULL); diff --git a/drivers/isdn/hisax/hfc_2bs0.c b/drivers/isdn/hisax/hfc_2bs0.c index 14dada42874e..34d59992839a 100644 --- a/drivers/isdn/hisax/hfc_2bs0.c +++ b/drivers/isdn/hisax/hfc_2bs0.c @@ -557,7 +557,8 @@ init_send(struct BCState *bcs) { int i; - if (!(bcs->hw.hfc.send = kmalloc(32 * sizeof(unsigned int), GFP_ATOMIC))) { + bcs->hw.hfc.send = kmalloc_array(32, sizeof(unsigned int), GFP_ATOMIC); + if (!bcs->hw.hfc.send) { printk(KERN_WARNING "HiSax: No memory for hfc.send\n"); return; diff --git a/drivers/isdn/hisax/netjet.c b/drivers/isdn/hisax/netjet.c index b7f54fa29228..e932a152c405 100644 --- a/drivers/isdn/hisax/netjet.c +++ b/drivers/isdn/hisax/netjet.c @@ -912,8 +912,10 @@ setstack_tiger(struct PStack *st, struct BCState *bcs) void inittiger(struct IsdnCardState *cs) { - if (!(cs->bcs[0].hw.tiger.send = kmalloc(NETJET_DMA_TXSIZE * sizeof(unsigned int), - GFP_KERNEL | GFP_DMA))) { + cs->bcs[0].hw.tiger.send = kmalloc_array(NETJET_DMA_TXSIZE, + sizeof(unsigned int), + GFP_KERNEL | GFP_DMA); + if (!cs->bcs[0].hw.tiger.send) { printk(KERN_WARNING "HiSax: No memory for tiger.send\n"); return; @@ -933,8 +935,10 @@ inittiger(struct IsdnCardState *cs) cs->hw.njet.base + NETJET_DMA_READ_IRQ); outl(virt_to_bus(cs->bcs[0].hw.tiger.s_end), cs->hw.njet.base + NETJET_DMA_READ_END); - if (!(cs->bcs[0].hw.tiger.rec = kmalloc(NETJET_DMA_RXSIZE * sizeof(unsigned int), - GFP_KERNEL | GFP_DMA))) { + cs->bcs[0].hw.tiger.rec = kmalloc_array(NETJET_DMA_RXSIZE, + sizeof(unsigned int), + GFP_KERNEL | GFP_DMA); + if (!cs->bcs[0].hw.tiger.rec) { printk(KERN_WARNING "HiSax: No memory for tiger.rec\n"); return; diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c index 7c6f3f5d9d9a..1644ac52548b 100644 --- a/drivers/isdn/i4l/isdn_common.c +++ b/drivers/isdn/i4l/isdn_common.c @@ -2089,7 +2089,8 @@ isdn_add_channels(isdn_driver_t *d, int drvidx, int n, int adding) skb_queue_purge(&d->rpqueue[j]); kfree(d->rpqueue); } - if (!(d->rpqueue = kmalloc(sizeof(struct sk_buff_head) * m, GFP_ATOMIC))) { + d->rpqueue = kmalloc_array(m, sizeof(struct sk_buff_head), GFP_ATOMIC); + if (!d->rpqueue) { printk(KERN_WARNING "register_isdn: Could not alloc rpqueue\n"); if (!adding) { kfree(d->rcvcount); @@ -2103,7 +2104,8 @@ isdn_add_channels(isdn_driver_t *d, int drvidx, int n, int adding) if ((adding) && (d->rcv_waitq)) kfree(d->rcv_waitq); - d->rcv_waitq = kmalloc(sizeof(wait_queue_head_t) * 2 * m, GFP_ATOMIC); + d->rcv_waitq = kmalloc(array3_size(sizeof(wait_queue_head_t), 2, m), + GFP_ATOMIC); if (!d->rcv_waitq) { printk(KERN_WARNING "register_isdn: Could not alloc rcv_waitq\n"); if (!adding) { diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c index 491df0fa0835..f497a77423a2 100644 --- a/drivers/lightnvm/pblk-init.c +++ b/drivers/lightnvm/pblk-init.c @@ -833,8 +833,8 @@ static int pblk_alloc_line_meta(struct pblk *pblk, struct pblk_line *line) goto free_blk_bitmap; - line->chks = kmalloc(lm->blk_per_line * sizeof(struct nvm_chk_meta), - GFP_KERNEL); + line->chks = kmalloc_array(lm->blk_per_line, + sizeof(struct nvm_chk_meta), GFP_KERNEL); if (!line->chks) goto free_erase_bitmap; diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index fc68c7aaef8e..136e7e66d870 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -2743,7 +2743,8 @@ static int create_journal(struct dm_integrity_c *ic, char **error) r = -ENOMEM; goto bad; } - section_req->iv = kmalloc(ivsize * 2, GFP_KERNEL); + section_req->iv = kmalloc_array(ivsize, 2, + GFP_KERNEL); if (!section_req->iv) { skcipher_request_free(section_req); *error = "Unable to allocate iv"; diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index f745404da721..97de7a7334d4 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -326,8 +326,8 @@ static int init_origin_hash(void) { int i; - _origins = kmalloc(ORIGIN_HASH_SIZE * sizeof(struct list_head), - GFP_KERNEL); + _origins = kmalloc_array(ORIGIN_HASH_SIZE, sizeof(struct list_head), + GFP_KERNEL); if (!_origins) { DMERR("unable to allocate memory for _origins"); return -ENOMEM; @@ -335,8 +335,9 @@ static int init_origin_hash(void) for (i = 0; i < ORIGIN_HASH_SIZE; i++) INIT_LIST_HEAD(_origins + i); - _dm_origins = kmalloc(ORIGIN_HASH_SIZE * sizeof(struct list_head), - GFP_KERNEL); + _dm_origins = kmalloc_array(ORIGIN_HASH_SIZE, + sizeof(struct list_head), + GFP_KERNEL); if (!_dm_origins) { DMERR("unable to allocate memory for _dm_origins"); kfree(_origins); diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c index 56059fb56e2d..21de30b4e2a1 100644 --- a/drivers/md/dm-stats.c +++ b/drivers/md/dm-stats.c @@ -915,7 +915,9 @@ static int parse_histogram(const char *h, unsigned *n_histogram_entries, if (*q == ',') (*n_histogram_entries)++; - *histogram_boundaries = kmalloc(*n_histogram_entries * sizeof(unsigned long long), GFP_KERNEL); + *histogram_boundaries = kmalloc_array(*n_histogram_entries, + sizeof(unsigned long long), + GFP_KERNEL); if (!*histogram_boundaries) return -ENOMEM; diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index caa51dd351b6..938766794c2e 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -561,7 +561,7 @@ static char **realloc_argv(unsigned *size, char **old_argv) new_size = 8; gfp = GFP_NOIO; } - argv = kmalloc(new_size * sizeof(*argv), gfp); + argv = kmalloc_array(new_size, sizeof(*argv), gfp); if (argv) { memcpy(argv, old_argv, *size * sizeof(*argv)); *size = new_size; diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index 239c7bb3929b..01c8329b512d 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -789,8 +789,8 @@ static int bitmap_storage_alloc(struct bitmap_storage *store, num_pages = DIV_ROUND_UP(bytes, PAGE_SIZE); offset = slot_number * num_pages; - store->filemap = kmalloc(sizeof(struct page *) - * num_pages, GFP_KERNEL); + store->filemap = kmalloc_array(num_pages, sizeof(struct page *), + GFP_KERNEL); if (!store->filemap) return -ENOMEM; diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 0b344d087581..e7c0ecd19234 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -126,8 +126,8 @@ static void * r1buf_pool_alloc(gfp_t gfp_flags, void *data) if (!r1_bio) return NULL; - rps = kmalloc(sizeof(struct resync_pages) * pi->raid_disks, - gfp_flags); + rps = kmalloc_array(pi->raid_disks, sizeof(struct resync_pages), + gfp_flags); if (!rps) goto out_free_r1bio; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 1147ae59e3b6..e35db73b9b9e 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -175,7 +175,7 @@ static void * r10buf_pool_alloc(gfp_t gfp_flags, void *data) nalloc_rp = nalloc; else nalloc_rp = nalloc * 2; - rps = kmalloc(sizeof(struct resync_pages) * nalloc_rp, gfp_flags); + rps = kmalloc_array(nalloc_rp, sizeof(struct resync_pages), gfp_flags); if (!rps) goto out_free_r10bio; diff --git a/drivers/media/pci/bt8xx/bttv-risc.c b/drivers/media/pci/bt8xx/bttv-risc.c index 6a6be0b49f70..74aff6877d9c 100644 --- a/drivers/media/pci/bt8xx/bttv-risc.c +++ b/drivers/media/pci/bt8xx/bttv-risc.c @@ -256,7 +256,8 @@ bttv_risc_overlay(struct bttv *btv, struct btcx_riscmem *risc, u32 addr; /* skip list for window clipping */ - if (NULL == (skips = kmalloc(sizeof(*skips) * ov->nclips,GFP_KERNEL))) + skips = kmalloc_array(ov->nclips, sizeof(*skips),GFP_KERNEL); + if (NULL == skips) return -ENOMEM; /* estimate risc mem: worst case is (1.5*clip+1) * lines instructions diff --git a/drivers/media/pci/ivtv/ivtvfb.c b/drivers/media/pci/ivtv/ivtvfb.c index 8e62b8be6529..b19058e36853 100644 --- a/drivers/media/pci/ivtv/ivtvfb.c +++ b/drivers/media/pci/ivtv/ivtvfb.c @@ -1077,7 +1077,7 @@ static int ivtvfb_init_vidmode(struct ivtv *itv) /* Allocate the pseudo palette */ oi->ivtvfb_info.pseudo_palette = - kmalloc(sizeof(u32) * 16, GFP_KERNEL|__GFP_NOWARN); + kmalloc_array(16, sizeof(u32), GFP_KERNEL|__GFP_NOWARN); if (!oi->ivtvfb_info.pseudo_palette) { IVTVFB_ERR("abort, unable to alloc pseudo palette\n"); diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c index 82ec216f2ad8..59031018985e 100644 --- a/drivers/media/platform/vivid/vivid-core.c +++ b/drivers/media/platform/vivid/vivid-core.c @@ -859,8 +859,9 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) /* create a string array containing the names of all the preset timings */ while (v4l2_dv_timings_presets[dev->query_dv_timings_size].bt.width) dev->query_dv_timings_size++; - dev->query_dv_timings_qmenu = kmalloc(dev->query_dv_timings_size * - (sizeof(void *) + 32), GFP_KERNEL); + dev->query_dv_timings_qmenu = kmalloc_array(dev->query_dv_timings_size, + (sizeof(void *) + 32), + GFP_KERNEL); if (dev->query_dv_timings_qmenu == NULL) goto free_dev; for (i = 0; i < dev->query_dv_timings_size; i++) { diff --git a/drivers/media/usb/cpia2/cpia2_usb.c b/drivers/media/usb/cpia2/cpia2_usb.c index b51fc372ca25..a771e0a52610 100644 --- a/drivers/media/usb/cpia2/cpia2_usb.c +++ b/drivers/media/usb/cpia2/cpia2_usb.c @@ -663,7 +663,8 @@ static int submit_urbs(struct camera_data *cam) if (cam->sbuf[i].data) continue; cam->sbuf[i].data = - kmalloc(FRAMES_PER_DESC * FRAME_SIZE_PER_DESC, GFP_KERNEL); + kmalloc_array(FRAME_SIZE_PER_DESC, FRAMES_PER_DESC, + GFP_KERNEL); if (!cam->sbuf[i].data) { while (--i >= 0) { kfree(cam->sbuf[i].data); diff --git a/drivers/media/usb/cx231xx/cx231xx-audio.c b/drivers/media/usb/cx231xx/cx231xx-audio.c index d96236d786d1..c4a84fb930b6 100644 --- a/drivers/media/usb/cx231xx/cx231xx-audio.c +++ b/drivers/media/usb/cx231xx/cx231xx-audio.c @@ -710,7 +710,7 @@ static int cx231xx_audio_init(struct cx231xx *dev) dev_info(dev->dev, "audio EndPoint Addr 0x%x, Alternate settings: %i\n", adev->end_point_addr, adev->num_alt); - adev->alt_max_pkt_size = kmalloc(32 * adev->num_alt, GFP_KERNEL); + adev->alt_max_pkt_size = kmalloc_array(32, adev->num_alt, GFP_KERNEL); if (!adev->alt_max_pkt_size) { err = -ENOMEM; goto err_free_card; diff --git a/drivers/media/usb/go7007/go7007-usb.c b/drivers/media/usb/go7007/go7007-usb.c index ed9bcaf08d5e..19c6a0354ce0 100644 --- a/drivers/media/usb/go7007/go7007-usb.c +++ b/drivers/media/usb/go7007/go7007-usb.c @@ -1143,7 +1143,8 @@ static int go7007_usb_probe(struct usb_interface *intf, usb->intr_urb = usb_alloc_urb(0, GFP_KERNEL); if (usb->intr_urb == NULL) goto allocfail; - usb->intr_urb->transfer_buffer = kmalloc(2*sizeof(u16), GFP_KERNEL); + usb->intr_urb->transfer_buffer = kmalloc_array(2, sizeof(u16), + GFP_KERNEL); if (usb->intr_urb->transfer_buffer == NULL) goto allocfail; diff --git a/drivers/media/usb/gspca/t613.c b/drivers/media/usb/gspca/t613.c index 0ae557cd15ef..445782919446 100644 --- a/drivers/media/usb/gspca/t613.c +++ b/drivers/media/usb/gspca/t613.c @@ -363,7 +363,7 @@ static void reg_w_ixbuf(struct gspca_dev *gspca_dev, if (len * 2 <= USB_BUF_SZ) { p = tmpbuf = gspca_dev->usb_buf; } else { - p = tmpbuf = kmalloc(len * 2, GFP_KERNEL); + p = tmpbuf = kmalloc_array(len, 2, GFP_KERNEL); if (!tmpbuf) { pr_err("Out of memory\n"); return; diff --git a/drivers/media/usb/stk1160/stk1160-core.c b/drivers/media/usb/stk1160/stk1160-core.c index 72bd893c9659..468f5ccf4ae6 100644 --- a/drivers/media/usb/stk1160/stk1160-core.c +++ b/drivers/media/usb/stk1160/stk1160-core.c @@ -290,8 +290,9 @@ static int stk1160_probe(struct usb_interface *interface, return -ENODEV; /* Alloc an array for all possible max_pkt_size */ - alt_max_pkt_size = kmalloc(sizeof(alt_max_pkt_size[0]) * - interface->num_altsetting, GFP_KERNEL); + alt_max_pkt_size = kmalloc_array(interface->num_altsetting, + sizeof(alt_max_pkt_size[0]), + GFP_KERNEL); if (alt_max_pkt_size == NULL) return -ENOMEM; diff --git a/drivers/media/usb/tm6000/tm6000-video.c b/drivers/media/usb/tm6000/tm6000-video.c index aa85fe31c835..96055de6e8ce 100644 --- a/drivers/media/usb/tm6000/tm6000-video.c +++ b/drivers/media/usb/tm6000/tm6000-video.c @@ -463,11 +463,12 @@ static int tm6000_alloc_urb_buffers(struct tm6000_core *dev) if (dev->urb_buffer) return 0; - dev->urb_buffer = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL); + dev->urb_buffer = kmalloc_array(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->urb_buffer) return -ENOMEM; - dev->urb_dma = kmalloc(sizeof(dma_addr_t *)*num_bufs, GFP_KERNEL); + dev->urb_dma = kmalloc_array(num_bufs, sizeof(dma_addr_t *), + GFP_KERNEL); if (!dev->urb_dma) return -ENOMEM; @@ -583,12 +584,14 @@ static int tm6000_prepare_isoc(struct tm6000_core *dev) dev->isoc_ctl.num_bufs = num_bufs; - dev->isoc_ctl.urb = kmalloc(sizeof(void *)*num_bufs, GFP_KERNEL); + dev->isoc_ctl.urb = kmalloc_array(num_bufs, sizeof(void *), + GFP_KERNEL); if (!dev->isoc_ctl.urb) return -ENOMEM; - dev->isoc_ctl.transfer_buffer = kmalloc(sizeof(void *)*num_bufs, - GFP_KERNEL); + dev->isoc_ctl.transfer_buffer = kmalloc_array(num_bufs, + sizeof(void *), + GFP_KERNEL); if (!dev->isoc_ctl.transfer_buffer) { kfree(dev->isoc_ctl.urb); return -ENOMEM; diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c index 0f5954a1fea2..f29d1bef0293 100644 --- a/drivers/media/usb/usbvision/usbvision-video.c +++ b/drivers/media/usb/usbvision/usbvision-video.c @@ -1492,7 +1492,8 @@ static int usbvision_probe(struct usb_interface *intf, usbvision->num_alt = uif->num_altsetting; PDEBUG(DBG_PROBE, "Alternate settings: %i", usbvision->num_alt); - usbvision->alt_max_pkt_size = kmalloc(32 * usbvision->num_alt, GFP_KERNEL); + usbvision->alt_max_pkt_size = kmalloc_array(32, usbvision->num_alt, + GFP_KERNEL); if (!usbvision->alt_max_pkt_size) { ret = -ENOMEM; goto err_pkt; diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index b28c997a7ab0..a88b2e51a666 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -513,8 +513,8 @@ static int uvc_video_clock_init(struct uvc_streaming *stream) spin_lock_init(&clock->lock); clock->size = 32; - clock->samples = kmalloc(clock->size * sizeof(*clock->samples), - GFP_KERNEL); + clock->samples = kmalloc_array(clock->size, sizeof(*clock->samples), + GFP_KERNEL); if (clock->samples == NULL) return -ENOMEM; diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c index 2e5c346f9c30..78155f596f74 100644 --- a/drivers/media/v4l2-core/videobuf-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf-dma-sg.c @@ -175,7 +175,8 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma, dma->offset = data & ~PAGE_MASK; dma->size = size; dma->nr_pages = last-first+1; - dma->pages = kmalloc(dma->nr_pages * sizeof(struct page *), GFP_KERNEL); + dma->pages = kmalloc_array(dma->nr_pages, sizeof(struct page *), + GFP_KERNEL); if (NULL == dma->pages) return -ENOMEM; diff --git a/drivers/memstick/core/ms_block.c b/drivers/memstick/core/ms_block.c index a15181fa45f7..716fc8ed31d3 100644 --- a/drivers/memstick/core/ms_block.c +++ b/drivers/memstick/core/ms_block.c @@ -1201,7 +1201,8 @@ static int msb_read_boot_blocks(struct msb_data *msb) dbg_verbose("Start of a scan for the boot blocks"); if (!msb->boot_page) { - page = kmalloc(sizeof(struct ms_boot_page)*2, GFP_KERNEL); + page = kmalloc_array(2, sizeof(struct ms_boot_page), + GFP_KERNEL); if (!page) return -ENOMEM; @@ -1341,7 +1342,8 @@ static int msb_ftl_initialize(struct msb_data *msb) msb->used_blocks_bitmap = kzalloc(msb->block_count / 8, GFP_KERNEL); msb->erased_blocks_bitmap = kzalloc(msb->block_count / 8, GFP_KERNEL); msb->lba_to_pba_table = - kmalloc(msb->logical_block_count * sizeof(u16), GFP_KERNEL); + kmalloc_array(msb->logical_block_count, sizeof(u16), + GFP_KERNEL); if (!msb->used_blocks_bitmap || !msb->lba_to_pba_table || !msb->erased_blocks_bitmap) { diff --git a/drivers/message/fusion/mptlan.c b/drivers/message/fusion/mptlan.c index 4cbed4d06aa7..ebc00d47abf5 100644 --- a/drivers/message/fusion/mptlan.c +++ b/drivers/message/fusion/mptlan.c @@ -394,7 +394,8 @@ mpt_lan_open(struct net_device *dev) "a moment.\n"); } - priv->mpt_txfidx = kmalloc(priv->tx_max_out * sizeof(int), GFP_KERNEL); + priv->mpt_txfidx = kmalloc_array(priv->tx_max_out, sizeof(int), + GFP_KERNEL); if (priv->mpt_txfidx == NULL) goto out; priv->mpt_txfidx_tail = -1; @@ -408,8 +409,8 @@ mpt_lan_open(struct net_device *dev) dlprintk((KERN_INFO MYNAM "@lo: Finished initializing SendCtl\n")); - priv->mpt_rxfidx = kmalloc(priv->max_buckets_out * sizeof(int), - GFP_KERNEL); + priv->mpt_rxfidx = kmalloc_array(priv->max_buckets_out, sizeof(int), + GFP_KERNEL); if (priv->mpt_rxfidx == NULL) goto out_SendCtl; priv->mpt_rxfidx_tail = -1; diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c index 34a5a41578d7..59dc24bb70ec 100644 --- a/drivers/misc/eeprom/idt_89hpesx.c +++ b/drivers/misc/eeprom/idt_89hpesx.c @@ -964,7 +964,7 @@ static ssize_t idt_dbgfs_csr_write(struct file *filep, const char __user *ubuf, if (colon_ch != NULL) { csraddr_len = colon_ch - buf; csraddr_str = - kmalloc(sizeof(char)*(csraddr_len + 1), GFP_KERNEL); + kmalloc(csraddr_len + 1, GFP_KERNEL); if (csraddr_str == NULL) { ret = -ENOMEM; goto free_buf; diff --git a/drivers/misc/vmw_vmci/vmci_queue_pair.c b/drivers/misc/vmw_vmci/vmci_queue_pair.c index 0339538c182d..b4d7774cfe07 100644 --- a/drivers/misc/vmw_vmci/vmci_queue_pair.c +++ b/drivers/misc/vmw_vmci/vmci_queue_pair.c @@ -449,12 +449,14 @@ static int qp_alloc_ppn_set(void *prod_q, return VMCI_ERROR_ALREADY_EXISTS; produce_ppns = - kmalloc(num_produce_pages * sizeof(*produce_ppns), GFP_KERNEL); + kmalloc_array(num_produce_pages, sizeof(*produce_ppns), + GFP_KERNEL); if (!produce_ppns) return VMCI_ERROR_NO_MEM; consume_ppns = - kmalloc(num_consume_pages * sizeof(*consume_ppns), GFP_KERNEL); + kmalloc_array(num_consume_pages, sizeof(*consume_ppns), + GFP_KERNEL); if (!consume_ppns) { kfree(produce_ppns); return VMCI_ERROR_NO_MEM; diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index f5695be14499..5a81bd8073bc 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -758,7 +758,9 @@ static int cfi_intelext_partition_fixup(struct mtd_info *mtd, newcfi = kmalloc(sizeof(struct cfi_private) + numvirtchips * sizeof(struct flchip), GFP_KERNEL); if (!newcfi) return -ENOMEM; - shared = kmalloc(sizeof(struct flchip_shared) * cfi->numchips, GFP_KERNEL); + shared = kmalloc_array(cfi->numchips, + sizeof(struct flchip_shared), + GFP_KERNEL); if (!shared) { kfree(newcfi); return -ENOMEM; diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 7c889eca9ab0..22506d22194e 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -692,8 +692,9 @@ static struct mtd_info *cfi_amdstd_setup(struct mtd_info *mtd) mtd->size = devsize * cfi->numchips; mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips; - mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) - * mtd->numeraseregions, GFP_KERNEL); + mtd->eraseregions = kmalloc_array(mtd->numeraseregions, + sizeof(struct mtd_erase_region_info), + GFP_KERNEL); if (!mtd->eraseregions) goto setup_err; diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c index 7b7658a05036..35aa72b720a6 100644 --- a/drivers/mtd/chips/cfi_cmdset_0020.c +++ b/drivers/mtd/chips/cfi_cmdset_0020.c @@ -184,8 +184,9 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map) mtd->size = devsize * cfi->numchips; mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips; - mtd->eraseregions = kmalloc(sizeof(struct mtd_erase_region_info) - * mtd->numeraseregions, GFP_KERNEL); + mtd->eraseregions = kmalloc_array(mtd->numeraseregions, + sizeof(struct mtd_erase_region_info), + GFP_KERNEL); if (!mtd->eraseregions) { kfree(cfi->cmdset_priv); kfree(mtd); diff --git a/drivers/mtd/ftl.c b/drivers/mtd/ftl.c index ef6ad2551d57..1f8063c6aed1 100644 --- a/drivers/mtd/ftl.c +++ b/drivers/mtd/ftl.c @@ -201,15 +201,16 @@ static int build_maps(partition_t *part) /* Set up erase unit maps */ part->DataUnits = le16_to_cpu(part->header.NumEraseUnits) - part->header.NumTransferUnits; - part->EUNInfo = kmalloc(part->DataUnits * sizeof(struct eun_info_t), - GFP_KERNEL); + part->EUNInfo = kmalloc_array(part->DataUnits, sizeof(struct eun_info_t), + GFP_KERNEL); if (!part->EUNInfo) goto out; for (i = 0; i < part->DataUnits; i++) part->EUNInfo[i].Offset = 0xffffffff; part->XferInfo = - kmalloc(part->header.NumTransferUnits * sizeof(struct xfer_info_t), - GFP_KERNEL); + kmalloc_array(part->header.NumTransferUnits, + sizeof(struct xfer_info_t), + GFP_KERNEL); if (!part->XferInfo) goto out_EUNInfo; @@ -269,8 +270,8 @@ static int build_maps(partition_t *part) memset(part->VirtualBlockMap, 0xff, blocks * sizeof(uint32_t)); part->BlocksPerUnit = (1 << header.EraseUnitSize) >> header.BlockSize; - part->bam_cache = kmalloc(part->BlocksPerUnit * sizeof(uint32_t), - GFP_KERNEL); + part->bam_cache = kmalloc_array(part->BlocksPerUnit, sizeof(uint32_t), + GFP_KERNEL); if (!part->bam_cache) goto out_VirtualBlockMap; diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c index 2d598412972d..10d977e9709d 100644 --- a/drivers/mtd/inftlmount.c +++ b/drivers/mtd/inftlmount.c @@ -270,7 +270,8 @@ static int find_boot_record(struct INFTLrecord *inftl) inftl->nb_blocks = ip->lastUnit + 1; /* Memory alloc */ - inftl->PUtable = kmalloc(inftl->nb_blocks * sizeof(u16), GFP_KERNEL); + inftl->PUtable = kmalloc_array(inftl->nb_blocks, sizeof(u16), + GFP_KERNEL); if (!inftl->PUtable) { printk(KERN_WARNING "INFTL: allocation of PUtable " "failed (%zd bytes)\n", @@ -278,7 +279,8 @@ static int find_boot_record(struct INFTLrecord *inftl) return -ENOMEM; } - inftl->VUtable = kmalloc(inftl->nb_blocks * sizeof(u16), GFP_KERNEL); + inftl->VUtable = kmalloc_array(inftl->nb_blocks, sizeof(u16), + GFP_KERNEL); if (!inftl->VUtable) { kfree(inftl->PUtable); printk(KERN_WARNING "INFTL: allocation of VUtable " diff --git a/drivers/mtd/lpddr/lpddr_cmds.c b/drivers/mtd/lpddr/lpddr_cmds.c index 5c5ba3c7c79d..b13557fe52bd 100644 --- a/drivers/mtd/lpddr/lpddr_cmds.c +++ b/drivers/mtd/lpddr/lpddr_cmds.c @@ -78,7 +78,7 @@ struct mtd_info *lpddr_cmdset(struct map_info *map) mtd->erasesize = 1 << lpddr->qinfo->UniformBlockSizeShift; mtd->writesize = 1 << lpddr->qinfo->BufSizeShift; - shared = kmalloc(sizeof(struct flchip_shared) * lpddr->numchips, + shared = kmalloc_array(lpddr->numchips, sizeof(struct flchip_shared), GFP_KERNEL); if (!shared) { kfree(lpddr); diff --git a/drivers/mtd/maps/vmu-flash.c b/drivers/mtd/maps/vmu-flash.c index 6b223cfe92b7..c5d4b6589488 100644 --- a/drivers/mtd/maps/vmu-flash.c +++ b/drivers/mtd/maps/vmu-flash.c @@ -629,15 +629,15 @@ static int vmu_connect(struct maple_device *mdev) * Not sure there are actually any multi-partition devices in the * real world, but the hardware supports them, so, so will we */ - card->parts = kmalloc(sizeof(struct vmupart) * card->partitions, - GFP_KERNEL); + card->parts = kmalloc_array(card->partitions, sizeof(struct vmupart), + GFP_KERNEL); if (!card->parts) { error = -ENOMEM; goto fail_partitions; } - card->mtd = kmalloc(sizeof(struct mtd_info) * card->partitions, - GFP_KERNEL); + card->mtd = kmalloc_array(card->partitions, sizeof(struct mtd_info), + GFP_KERNEL); if (!card->mtd) { error = -ENOMEM; goto fail_mtd_info; diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index 6b86d1a73cf2..cbc5925e6440 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -778,8 +778,9 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c concat->mtd.erasesize = max_erasesize; concat->mtd.numeraseregions = num_erase_region; concat->mtd.eraseregions = erase_region_p = - kmalloc(num_erase_region * - sizeof (struct mtd_erase_region_info), GFP_KERNEL); + kmalloc_array(num_erase_region, + sizeof(struct mtd_erase_region_info), + GFP_KERNEL); if (!erase_region_p) { kfree(concat); printk diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index 7161f8a17f62..6593879595e3 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -1340,7 +1340,7 @@ static int mtdswap_init(struct mtdswap_dev *d, unsigned int eblocks, if (!d->page_buf) goto page_buf_fail; - d->oob_buf = kmalloc(2 * mtd->oobavail, GFP_KERNEL); + d->oob_buf = kmalloc_array(2, mtd->oobavail, GFP_KERNEL); if (!d->oob_buf) goto oob_buf_fail; diff --git a/drivers/mtd/nand/raw/nand_bch.c b/drivers/mtd/nand/raw/nand_bch.c index 7f11b68f6db1..b7387ace567a 100644 --- a/drivers/mtd/nand/raw/nand_bch.c +++ b/drivers/mtd/nand/raw/nand_bch.c @@ -186,7 +186,7 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) } nbc->eccmask = kmalloc(eccbytes, GFP_KERNEL); - nbc->errloc = kmalloc(t*sizeof(*nbc->errloc), GFP_KERNEL); + nbc->errloc = kmalloc_array(t, sizeof(*nbc->errloc), GFP_KERNEL); if (!nbc->eccmask || !nbc->errloc) goto fail; /* diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c index 6281da3dadac..27184e3874db 100644 --- a/drivers/mtd/nftlmount.c +++ b/drivers/mtd/nftlmount.c @@ -199,13 +199,16 @@ device is already correct. nftl->lastEUN = nftl->nb_blocks - 1; /* memory alloc */ - nftl->EUNtable = kmalloc(nftl->nb_blocks * sizeof(u16), GFP_KERNEL); + nftl->EUNtable = kmalloc_array(nftl->nb_blocks, sizeof(u16), + GFP_KERNEL); if (!nftl->EUNtable) { printk(KERN_NOTICE "NFTL: allocation of EUNtable failed\n"); return -ENOMEM; } - nftl->ReplUnitTable = kmalloc(nftl->nb_blocks * sizeof(u16), GFP_KERNEL); + nftl->ReplUnitTable = kmalloc_array(nftl->nb_blocks, + sizeof(u16), + GFP_KERNEL); if (!nftl->ReplUnitTable) { kfree(nftl->EUNtable); printk(KERN_NOTICE "NFTL: allocation of ReplUnitTable failed\n"); diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index 79636349df96..9d019ce1589e 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -750,7 +750,7 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num) dbg("initializing zone %d", zone_num); /* Allocate memory for FTL table */ - zone->lba_to_phys_table = kmalloc(ftl->max_lba * 2, GFP_KERNEL); + zone->lba_to_phys_table = kmalloc_array(ftl->max_lba, 2, GFP_KERNEL); if (!zone->lba_to_phys_table) return -ENOMEM; diff --git a/drivers/mtd/ssfdc.c b/drivers/mtd/ssfdc.c index 95f0bf95f095..7a1e54546f4a 100644 --- a/drivers/mtd/ssfdc.c +++ b/drivers/mtd/ssfdc.c @@ -332,8 +332,9 @@ static void ssfdcr_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) (long)ssfdc->sectors; /* Allocate logical block map */ - ssfdc->logic_block_map = kmalloc(sizeof(ssfdc->logic_block_map[0]) * - ssfdc->map_len, GFP_KERNEL); + ssfdc->logic_block_map = + kmalloc_array(ssfdc->map_len, + sizeof(ssfdc->logic_block_map[0]), GFP_KERNEL); if (!ssfdc->logic_block_map) goto out_err; memset(ssfdc->logic_block_map, 0xff, sizeof(ssfdc->logic_block_map[0]) * diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c index e509f8aa9a7e..0fe1217f94b9 100644 --- a/drivers/mtd/tests/stresstest.c +++ b/drivers/mtd/tests/stresstest.c @@ -199,7 +199,7 @@ static int __init mtd_stresstest_init(void) err = -ENOMEM; readbuf = vmalloc(bufsize); writebuf = vmalloc(bufsize); - offsets = kmalloc(ebcnt * sizeof(int), GFP_KERNEL); + offsets = kmalloc_array(ebcnt, sizeof(int), GFP_KERNEL); if (!readbuf || !writebuf || !offsets) goto out; for (i = 0; i < ebcnt; i++) diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c index edb1c8362faa..b98481b69314 100644 --- a/drivers/mtd/ubi/eba.c +++ b/drivers/mtd/ubi/eba.c @@ -1536,11 +1536,11 @@ int self_check_eba(struct ubi_device *ubi, struct ubi_attach_info *ai_fastmap, num_volumes = ubi->vtbl_slots + UBI_INT_VOL_COUNT; - scan_eba = kmalloc(sizeof(*scan_eba) * num_volumes, GFP_KERNEL); + scan_eba = kmalloc_array(num_volumes, sizeof(*scan_eba), GFP_KERNEL); if (!scan_eba) return -ENOMEM; - fm_eba = kmalloc(sizeof(*fm_eba) * num_volumes, GFP_KERNEL); + fm_eba = kmalloc_array(num_volumes, sizeof(*fm_eba), GFP_KERNEL); if (!fm_eba) { kfree(scan_eba); return -ENOMEM; @@ -1551,15 +1551,17 @@ int self_check_eba(struct ubi_device *ubi, struct ubi_attach_info *ai_fastmap, if (!vol) continue; - scan_eba[i] = kmalloc(vol->reserved_pebs * sizeof(**scan_eba), - GFP_KERNEL); + scan_eba[i] = kmalloc_array(vol->reserved_pebs, + sizeof(**scan_eba), + GFP_KERNEL); if (!scan_eba[i]) { ret = -ENOMEM; goto out_free; } - fm_eba[i] = kmalloc(vol->reserved_pebs * sizeof(**fm_eba), - GFP_KERNEL); + fm_eba[i] = kmalloc_array(vol->reserved_pebs, + sizeof(**fm_eba), + GFP_KERNEL); if (!fm_eba[i]) { ret = -ENOMEM; goto out_free; diff --git a/drivers/net/ethernet/amd/lance.c b/drivers/net/ethernet/amd/lance.c index 12a6a93d221b..b56d84c7df46 100644 --- a/drivers/net/ethernet/amd/lance.c +++ b/drivers/net/ethernet/amd/lance.c @@ -551,13 +551,13 @@ static int __init lance_probe1(struct net_device *dev, int ioaddr, int irq, int if (lance_debug > 6) printk(" (#0x%05lx)", (unsigned long)lp); dev->ml_priv = lp; lp->name = chipname; - lp->rx_buffs = (unsigned long)kmalloc(PKT_BUF_SZ*RX_RING_SIZE, - GFP_DMA | GFP_KERNEL); + lp->rx_buffs = (unsigned long)kmalloc_array(RX_RING_SIZE, PKT_BUF_SZ, + GFP_DMA | GFP_KERNEL); if (!lp->rx_buffs) goto out_lp; if (lance_need_isa_bounce_buffers) { - lp->tx_bounce_buffs = kmalloc(PKT_BUF_SZ*TX_RING_SIZE, - GFP_DMA | GFP_KERNEL); + lp->tx_bounce_buffs = kmalloc_array(TX_RING_SIZE, PKT_BUF_SZ, + GFP_DMA | GFP_KERNEL); if (!lp->tx_bounce_buffs) goto out_rx; } else diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c b/drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c index cfe86a20c899..28e9ae1a193b 100644 --- a/drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c +++ b/drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c @@ -209,8 +209,8 @@ static int atl1c_get_eeprom(struct net_device *netdev, first_dword = eeprom->offset >> 2; last_dword = (eeprom->offset + eeprom->len - 1) >> 2; - eeprom_buff = kmalloc(sizeof(u32) * - (last_dword - first_dword + 1), GFP_KERNEL); + eeprom_buff = kmalloc_array(last_dword - first_dword + 1, sizeof(u32), + GFP_KERNEL); if (eeprom_buff == NULL) return -ENOMEM; diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_ethtool.c b/drivers/net/ethernet/atheros/atl1e/atl1e_ethtool.c index cb489e7e8374..282ebdde4769 100644 --- a/drivers/net/ethernet/atheros/atl1e/atl1e_ethtool.c +++ b/drivers/net/ethernet/atheros/atl1e/atl1e_ethtool.c @@ -236,8 +236,8 @@ static int atl1e_get_eeprom(struct net_device *netdev, first_dword = eeprom->offset >> 2; last_dword = (eeprom->offset + eeprom->len - 1) >> 2; - eeprom_buff = kmalloc(sizeof(u32) * - (last_dword - first_dword + 1), GFP_KERNEL); + eeprom_buff = kmalloc_array(last_dword - first_dword + 1, sizeof(u32), + GFP_KERNEL); if (eeprom_buff == NULL) return -ENOMEM; diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c index db4bcc51023a..bb41becb6609 100644 --- a/drivers/net/ethernet/atheros/atlx/atl2.c +++ b/drivers/net/ethernet/atheros/atlx/atl2.c @@ -1941,8 +1941,8 @@ static int atl2_get_eeprom(struct net_device *netdev, first_dword = eeprom->offset >> 2; last_dword = (eeprom->offset + eeprom->len - 1) >> 2; - eeprom_buff = kmalloc(sizeof(u32) * (last_dword - first_dword + 1), - GFP_KERNEL); + eeprom_buff = kmalloc_array(last_dword - first_dword + 1, sizeof(u32), + GFP_KERNEL); if (!eeprom_buff) return -ENOMEM; diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c index 3853296d78c1..e13bf3b4636d 100644 --- a/drivers/net/ethernet/broadcom/bnx2.c +++ b/drivers/net/ethernet/broadcom/bnx2.c @@ -2666,7 +2666,7 @@ bnx2_alloc_bad_rbuf(struct bnx2 *bp) u32 good_mbuf_cnt; u32 val; - good_mbuf = kmalloc(512 * sizeof(u16), GFP_KERNEL); + good_mbuf = kmalloc_array(512, sizeof(u16), GFP_KERNEL); if (!good_mbuf) return -ENOMEM; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c index 38f635cf8408..05d405905906 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c @@ -444,8 +444,8 @@ static int bnxt_vf_reps_create(struct bnxt *bp) return -ENOMEM; /* storage for cfa_code to vf-idx mapping */ - cfa_code_map = kmalloc(sizeof(*bp->cfa_code_map) * MAX_CFA_CODE, - GFP_KERNEL); + cfa_code_map = kmalloc_array(MAX_CFA_CODE, sizeof(*bp->cfa_code_map), + GFP_KERNEL); if (!cfa_code_map) { rc = -ENOMEM; goto err; diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c index 251d5bdc972f..c301aaf79d64 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c @@ -873,7 +873,7 @@ static int cctrl_tbl_show(struct seq_file *seq, void *v) u16 (*incr)[NCCTRL_WIN]; struct adapter *adap = seq->private; - incr = kmalloc(sizeof(*incr) * NMTUS, GFP_KERNEL); + incr = kmalloc_array(NMTUS, sizeof(*incr), GFP_KERNEL); if (!incr) return -ENOMEM; diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index 35cb3ae4f7b6..3001d8ed1a0c 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -713,7 +713,7 @@ int cxgb4_write_rss(const struct port_info *pi, const u16 *queues) const struct sge_eth_rxq *rxq; rxq = &adapter->sge.ethrxq[pi->first_qset]; - rss = kmalloc(pi->rss_size * sizeof(u16), GFP_KERNEL); + rss = kmalloc_array(pi->rss_size, sizeof(u16), GFP_KERNEL); if (!rss) return -ENOMEM; @@ -4972,8 +4972,8 @@ static int enable_msix(struct adapter *adap) max_ingq += (MAX_OFLD_QSETS * adap->num_uld); if (is_offload(adap)) max_ingq += (MAX_OFLD_QSETS * adap->num_ofld_uld); - entries = kmalloc(sizeof(*entries) * (max_ingq + 1), - GFP_KERNEL); + entries = kmalloc_array(max_ingq + 1, sizeof(*entries), + GFP_KERNEL); if (!entries) return -ENOMEM; diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c index a96b838cffce..42fca3208c0b 100644 --- a/drivers/net/ethernet/freescale/ucc_geth.c +++ b/drivers/net/ethernet/freescale/ucc_geth.c @@ -2253,9 +2253,9 @@ static int ucc_geth_alloc_tx(struct ucc_geth_private *ugeth) /* Init Tx bds */ for (j = 0; j < ug_info->numQueuesTx; j++) { /* Setup the skbuff rings */ - ugeth->tx_skbuff[j] = kmalloc(sizeof(struct sk_buff *) * - ugeth->ug_info->bdRingLenTx[j], - GFP_KERNEL); + ugeth->tx_skbuff[j] = + kmalloc_array(ugeth->ug_info->bdRingLenTx[j], + sizeof(struct sk_buff *), GFP_KERNEL); if (ugeth->tx_skbuff[j] == NULL) { if (netif_msg_ifup(ugeth)) @@ -2326,9 +2326,9 @@ static int ucc_geth_alloc_rx(struct ucc_geth_private *ugeth) /* Init Rx bds */ for (j = 0; j < ug_info->numQueuesRx; j++) { /* Setup the skbuff rings */ - ugeth->rx_skbuff[j] = kmalloc(sizeof(struct sk_buff *) * - ugeth->ug_info->bdRingLenRx[j], - GFP_KERNEL); + ugeth->rx_skbuff[j] = + kmalloc_array(ugeth->ug_info->bdRingLenRx[j], + sizeof(struct sk_buff *), GFP_KERNEL); if (ugeth->rx_skbuff[j] == NULL) { if (netif_msg_ifup(ugeth)) diff --git a/drivers/net/ethernet/ibm/ibmveth.c b/drivers/net/ethernet/ibm/ibmveth.c index c1b51edaaf62..525d8b89187b 100644 --- a/drivers/net/ethernet/ibm/ibmveth.c +++ b/drivers/net/ethernet/ibm/ibmveth.c @@ -171,7 +171,7 @@ static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool) { int i; - pool->free_map = kmalloc(sizeof(u16) * pool->size, GFP_KERNEL); + pool->free_map = kmalloc_array(pool->size, sizeof(u16), GFP_KERNEL); if (!pool->free_map) return -1; diff --git a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c index 5d365a986bb0..bdb3f8e65ed4 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c +++ b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c @@ -435,8 +435,8 @@ static int e1000_get_eeprom(struct net_device *netdev, first_word = eeprom->offset >> 1; last_word = (eeprom->offset + eeprom->len - 1) >> 1; - eeprom_buff = kmalloc(sizeof(u16) * - (last_word - first_word + 1), GFP_KERNEL); + eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); if (!eeprom_buff) return -ENOMEM; diff --git a/drivers/net/ethernet/intel/e1000e/ethtool.c b/drivers/net/ethernet/intel/e1000e/ethtool.c index e084cb734eb1..02ebf208f48b 100644 --- a/drivers/net/ethernet/intel/e1000e/ethtool.c +++ b/drivers/net/ethernet/intel/e1000e/ethtool.c @@ -509,8 +509,8 @@ static int e1000_get_eeprom(struct net_device *netdev, first_word = eeprom->offset >> 1; last_word = (eeprom->offset + eeprom->len - 1) >> 1; - eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1), - GFP_KERNEL); + eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); if (!eeprom_buff) return -ENOMEM; diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c index 2d798499d35e..0edd3cdd84b0 100644 --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c @@ -736,8 +736,8 @@ static int igb_get_eeprom(struct net_device *netdev, first_word = eeprom->offset >> 1; last_word = (eeprom->offset + eeprom->len - 1) >> 1; - eeprom_buff = kmalloc(sizeof(u16) * - (last_word - first_word + 1), GFP_KERNEL); + eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); if (!eeprom_buff) return -ENOMEM; @@ -3245,8 +3245,8 @@ static int igb_get_module_eeprom(struct net_device *netdev, first_word = ee->offset >> 1; last_word = (ee->offset + ee->len - 1) >> 1; - dataword = kmalloc(sizeof(u16) * (last_word - first_word + 1), - GFP_KERNEL); + dataword = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); if (!dataword) return -ENOMEM; diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_ethtool.c b/drivers/net/ethernet/intel/ixgb/ixgb_ethtool.c index 43744bf0fc1c..c8c93ac436d4 100644 --- a/drivers/net/ethernet/intel/ixgb/ixgb_ethtool.c +++ b/drivers/net/ethernet/intel/ixgb/ixgb_ethtool.c @@ -375,8 +375,9 @@ ixgb_get_eeprom(struct net_device *netdev, first_word = eeprom->offset >> 1; last_word = (eeprom->offset + eeprom->len - 1) >> 1; - eeprom_buff = kmalloc(sizeof(__le16) * - (last_word - first_word + 1), GFP_KERNEL); + eeprom_buff = kmalloc_array(last_word - first_word + 1, + sizeof(__le16), + GFP_KERNEL); if (!eeprom_buff) return -ENOMEM; diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c index 62f2173bc20e..43664adf7a3c 100644 --- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c +++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c @@ -1093,8 +1093,9 @@ ixgb_set_multi(struct net_device *netdev) rctl |= IXGB_RCTL_MPE; IXGB_WRITE_REG(hw, RCTL, rctl); } else { - u8 *mta = kmalloc(IXGB_MAX_NUM_MULTICAST_ADDRESSES * - ETH_ALEN, GFP_ATOMIC); + u8 *mta = kmalloc_array(ETH_ALEN, + IXGB_MAX_NUM_MULTICAST_ADDRESSES, + GFP_ATOMIC); u8 *addr; if (!mta) goto alloc_failed; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c index bdd179c29ea4..be2636ea945b 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c @@ -901,7 +901,7 @@ static int ixgbe_get_eeprom(struct net_device *netdev, last_word = (eeprom->offset + eeprom->len - 1) >> 1; eeprom_len = last_word - first_word + 1; - eeprom_buff = kmalloc(sizeof(u16) * eeprom_len, GFP_KERNEL); + eeprom_buff = kmalloc_array(eeprom_len, sizeof(u16), GFP_KERNEL); if (!eeprom_buff) return -ENOMEM; diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c index 6a9086dc1e92..03375c705df7 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c @@ -2636,9 +2636,9 @@ int mlx4_cmd_use_events(struct mlx4_dev *dev) int i; int err = 0; - priv->cmd.context = kmalloc(priv->cmd.max_cmds * - sizeof(struct mlx4_cmd_context), - GFP_KERNEL); + priv->cmd.context = kmalloc_array(priv->cmd.max_cmds, + sizeof(struct mlx4_cmd_context), + GFP_KERNEL); if (!priv->cmd.context) return -ENOMEM; diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c index 6f57c052053e..1f3372c1802e 100644 --- a/drivers/net/ethernet/mellanox/mlx4/eq.c +++ b/drivers/net/ethernet/mellanox/mlx4/eq.c @@ -1211,8 +1211,9 @@ int mlx4_init_eq_table(struct mlx4_dev *dev) } priv->eq_table.irq_names = - kmalloc(MLX4_IRQNAME_SIZE * (dev->caps.num_comp_vectors + 1), - GFP_KERNEL); + kmalloc_array(MLX4_IRQNAME_SIZE, + (dev->caps.num_comp_vectors + 1), + GFP_KERNEL); if (!priv->eq_table.irq_names) { err = -ENOMEM; goto err_out_clr_int; diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index 29e50f787349..b0e11255a355 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -507,10 +507,12 @@ int mlx4_init_resource_tracker(struct mlx4_dev *dev) for (i = 0; i < MLX4_NUM_OF_RESOURCE_TYPE; i++) { struct resource_allocator *res_alloc = &priv->mfunc.master.res_tracker.res_alloc[i]; - res_alloc->quota = kmalloc((dev->persist->num_vfs + 1) * - sizeof(int), GFP_KERNEL); - res_alloc->guaranteed = kmalloc((dev->persist->num_vfs + 1) * - sizeof(int), GFP_KERNEL); + res_alloc->quota = kmalloc_array(dev->persist->num_vfs + 1, + sizeof(int), + GFP_KERNEL); + res_alloc->guaranteed = kmalloc_array(dev->persist->num_vfs + 1, + sizeof(int), + GFP_KERNEL); if (i == RES_MAC || i == RES_VLAN) res_alloc->allocated = kzalloc(MLX4_MAX_PORTS * (dev->persist->num_vfs diff --git a/drivers/net/ethernet/moxa/moxart_ether.c b/drivers/net/ethernet/moxa/moxart_ether.c index 2e4effa9fe45..b34055ac476f 100644 --- a/drivers/net/ethernet/moxa/moxart_ether.c +++ b/drivers/net/ethernet/moxa/moxart_ether.c @@ -507,15 +507,15 @@ static int moxart_mac_probe(struct platform_device *pdev) goto init_fail; } - priv->tx_buf_base = kmalloc(priv->tx_buf_size * TX_DESC_NUM, - GFP_ATOMIC); + priv->tx_buf_base = kmalloc_array(priv->tx_buf_size, TX_DESC_NUM, + GFP_ATOMIC); if (!priv->tx_buf_base) { ret = -ENOMEM; goto init_fail; } - priv->rx_buf_base = kmalloc(priv->rx_buf_size * RX_DESC_NUM, - GFP_ATOMIC); + priv->rx_buf_base = kmalloc_array(priv->rx_buf_size, RX_DESC_NUM, + GFP_ATOMIC); if (!priv->rx_buf_base) { ret = -ENOMEM; goto init_fail; diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c index 66c665d0b926..7cbd0174459c 100644 --- a/drivers/net/ethernet/nvidia/forcedeth.c +++ b/drivers/net/ethernet/nvidia/forcedeth.c @@ -4630,8 +4630,10 @@ static int nv_set_ringparam(struct net_device *dev, struct ethtool_ringparam* ri ring->tx_pending), &ring_addr, GFP_ATOMIC); } - rx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->rx_pending, GFP_KERNEL); - tx_skbuff = kmalloc(sizeof(struct nv_skb_map) * ring->tx_pending, GFP_KERNEL); + rx_skbuff = kmalloc_array(ring->rx_pending, sizeof(struct nv_skb_map), + GFP_KERNEL); + tx_skbuff = kmalloc_array(ring->tx_pending, sizeof(struct nv_skb_map), + GFP_KERNEL); if (!rxtx_ring || !rx_skbuff || !tx_skbuff) { /* fall back to old rings */ if (!nv_optimized(np)) { diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c index 7cd494611a74..34a1581eda95 100644 --- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c +++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c @@ -2178,7 +2178,7 @@ static void pch_gbe_set_multi(struct net_device *netdev) if (mc_count >= PCH_GBE_MAR_ENTRIES) return; - mta_list = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC); + mta_list = kmalloc_array(ETH_ALEN, mc_count, GFP_ATOMIC); if (!mta_list) return; diff --git a/drivers/net/ethernet/qlogic/qed/qed_mcp.c b/drivers/net/ethernet/qlogic/qed/qed_mcp.c index 6f9927d1a501..4e0b443c9519 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c @@ -2578,9 +2578,9 @@ int qed_mcp_nvm_info_populate(struct qed_hwfn *p_hwfn) goto err0; } - nvm_info->image_att = kmalloc(nvm_info->num_images * - sizeof(struct bist_nvm_image_att), - GFP_KERNEL); + nvm_info->image_att = kmalloc_array(nvm_info->num_images, + sizeof(struct bist_nvm_image_att), + GFP_KERNEL); if (!nvm_info->image_att) { rc = -ENOMEM; goto err0; diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c b/drivers/net/ethernet/qlogic/qlge/qlge_main.c index 70de062b72a1..353f1c129af1 100644 --- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c +++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c @@ -2810,7 +2810,8 @@ static int ql_alloc_tx_resources(struct ql_adapter *qdev, goto pci_alloc_err; tx_ring->q = - kmalloc(tx_ring->wq_len * sizeof(struct tx_ring_desc), GFP_KERNEL); + kmalloc_array(tx_ring->wq_len, sizeof(struct tx_ring_desc), + GFP_KERNEL); if (tx_ring->q == NULL) goto err; diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index f38e32a7ec9c..ec629a730005 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -742,11 +742,13 @@ static int gtp_hashtable_new(struct gtp_dev *gtp, int hsize) { int i; - gtp->addr_hash = kmalloc(sizeof(struct hlist_head) * hsize, GFP_KERNEL); + gtp->addr_hash = kmalloc_array(hsize, sizeof(struct hlist_head), + GFP_KERNEL); if (gtp->addr_hash == NULL) return -ENOMEM; - gtp->tid_hash = kmalloc(sizeof(struct hlist_head) * hsize, GFP_KERNEL); + gtp->tid_hash = kmalloc_array(hsize, sizeof(struct hlist_head), + GFP_KERNEL); if (gtp->tid_hash == NULL) goto err1; diff --git a/drivers/net/hippi/rrunner.c b/drivers/net/hippi/rrunner.c index f41116488079..029206e4da3b 100644 --- a/drivers/net/hippi/rrunner.c +++ b/drivers/net/hippi/rrunner.c @@ -1583,7 +1583,7 @@ static int rr_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) return -EPERM; } - image = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); + image = kmalloc_array(EEPROM_WORDS, sizeof(u32), GFP_KERNEL); if (!image) return -ENOMEM; diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 8863fa023500..ca0af0e15a2c 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -791,7 +791,8 @@ static int team_queue_override_init(struct team *team) if (!queue_cnt) return 0; - listarr = kmalloc(sizeof(struct list_head) * queue_cnt, GFP_KERNEL); + listarr = kmalloc_array(queue_cnt, sizeof(struct list_head), + GFP_KERNEL); if (!listarr) return -ENOMEM; team->qom_lists = listarr; diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c index f4d7362eb325..e95dd12edec4 100644 --- a/drivers/net/usb/asix_common.c +++ b/drivers/net/usb/asix_common.c @@ -640,8 +640,8 @@ int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, first_word = eeprom->offset >> 1; last_word = (eeprom->offset + eeprom->len - 1) >> 1; - eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1), - GFP_KERNEL); + eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); if (!eeprom_buff) return -ENOMEM; @@ -680,8 +680,8 @@ int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, first_word = eeprom->offset >> 1; last_word = (eeprom->offset + eeprom->len - 1) >> 1; - eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1), - GFP_KERNEL); + eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); if (!eeprom_buff) return -ENOMEM; diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c index a6ef75907ae9..9e8ad372f419 100644 --- a/drivers/net/usb/ax88179_178a.c +++ b/drivers/net/usb/ax88179_178a.c @@ -599,8 +599,8 @@ ax88179_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, first_word = eeprom->offset >> 1; last_word = (eeprom->offset + eeprom->len - 1) >> 1; - eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1), - GFP_KERNEL); + eeprom_buff = kmalloc_array(last_word - first_word + 1, sizeof(u16), + GFP_KERNEL); if (!eeprom_buff) return -ENOMEM; diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c index d9eea8cfe6cb..770aa624147f 100644 --- a/drivers/net/usb/usbnet.c +++ b/drivers/net/usb/usbnet.c @@ -1323,8 +1323,8 @@ static int build_dma_sg(const struct sk_buff *skb, struct urb *urb) return 0; /* reserve one for zero packet */ - urb->sg = kmalloc((num_sgs + 1) * sizeof(struct scatterlist), - GFP_ATOMIC); + urb->sg = kmalloc_array(num_sgs + 1, sizeof(struct scatterlist), + GFP_ATOMIC); if (!urb->sg) return -ENOMEM; diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 1619ee3070b6..15b9a83bbd9d 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2555,10 +2555,10 @@ static int virtnet_find_vqs(struct virtnet_info *vi) vqs = kzalloc(total_vqs * sizeof(*vqs), GFP_KERNEL); if (!vqs) goto err_vq; - callbacks = kmalloc(total_vqs * sizeof(*callbacks), GFP_KERNEL); + callbacks = kmalloc_array(total_vqs, sizeof(*callbacks), GFP_KERNEL); if (!callbacks) goto err_callback; - names = kmalloc(total_vqs * sizeof(*names), GFP_KERNEL); + names = kmalloc_array(total_vqs, sizeof(*names), GFP_KERNEL); if (!names) goto err_names; if (!vi->big_packets || vi->mergeable_rx_bufs) { diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c index 641b13a279e1..b1b8bc326830 100644 --- a/drivers/net/wireless/ath/ath5k/phy.c +++ b/drivers/net/wireless/ath/ath5k/phy.c @@ -890,7 +890,8 @@ ath5k_hw_rfregs_init(struct ath5k_hw *ah, * ah->ah_rf_banks based on ah->ah_rf_banks_size * we set above */ if (ah->ah_rf_banks == NULL) { - ah->ah_rf_banks = kmalloc(sizeof(u32) * ah->ah_rf_banks_size, + ah->ah_rf_banks = kmalloc_array(ah->ah_rf_banks_size, + sizeof(u32), GFP_KERNEL); if (ah->ah_rf_banks == NULL) { ATH5K_ERR(ah, "out of memory\n"); diff --git a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c index 6343cc91953e..34e100940284 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c @@ -925,7 +925,7 @@ int ar9003_paprd_create_curve(struct ath_hw *ah, memset(caldata->pa_table[chain], 0, sizeof(caldata->pa_table[chain])); - buf = kmalloc(2 * 48 * sizeof(u32), GFP_KERNEL); + buf = kmalloc_array(2 * 48, sizeof(u32), GFP_KERNEL); if (!buf) return -ENOMEM; diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 6b37036b2d36..e60bea4604e4 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -127,13 +127,13 @@ void ath9k_hw_read_array(struct ath_hw *ah, u32 array[][2], int size) u32 *tmp_reg_list, *tmp_data; int i; - tmp_reg_list = kmalloc(size * sizeof(u32), GFP_KERNEL); + tmp_reg_list = kmalloc_array(size, sizeof(u32), GFP_KERNEL); if (!tmp_reg_list) { dev_err(ah->dev, "%s: tmp_reg_list: alloc filed\n", __func__); return; } - tmp_data = kmalloc(size * sizeof(u32), GFP_KERNEL); + tmp_data = kmalloc_array(size, sizeof(u32), GFP_KERNEL); if (!tmp_data) { dev_err(ah->dev, "%s tmp_data: alloc filed\n", __func__); goto error_tmp_data; diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c index 9d830d27b229..9fb0d9fbd939 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c @@ -1387,7 +1387,7 @@ wlc_lcnphy_rx_iq_cal(struct brcms_phy *pi, s16 *ptr; struct brcms_phy_lcnphy *pi_lcn = pi->u.pi_lcnphy; - ptr = kmalloc(sizeof(s16) * 131, GFP_ATOMIC); + ptr = kmalloc_array(131, sizeof(s16), GFP_ATOMIC); if (NULL == ptr) return false; if (module == 2) { @@ -2670,7 +2670,7 @@ wlc_lcnphy_tx_iqlo_cal(struct brcms_phy *pi, u16 *values_to_save; struct brcms_phy_lcnphy *pi_lcn = pi->u.pi_lcnphy; - values_to_save = kmalloc(sizeof(u16) * 20, GFP_ATOMIC); + values_to_save = kmalloc_array(20, sizeof(u16), GFP_ATOMIC); if (NULL == values_to_save) return; @@ -3678,11 +3678,11 @@ wlc_lcnphy_a1(struct brcms_phy *pi, int cal_type, int num_levels, u16 *phy_c32; phy_c21 = 0; phy_c10 = phy_c13 = phy_c14 = phy_c8 = 0; - ptr = kmalloc(sizeof(s16) * 131, GFP_ATOMIC); + ptr = kmalloc_array(131, sizeof(s16), GFP_ATOMIC); if (NULL == ptr) return; - phy_c32 = kmalloc(sizeof(u16) * 20, GFP_ATOMIC); + phy_c32 = kmalloc_array(20, sizeof(u16), GFP_ATOMIC); if (NULL == phy_c32) { kfree(ptr); return; diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c index 7e01981bc5c8..1a187557982e 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c @@ -23032,7 +23032,7 @@ wlc_phy_loadsampletable_nphy(struct brcms_phy *pi, struct cordic_iq *tone_buf, u16 t; u32 *data_buf = NULL; - data_buf = kmalloc(sizeof(u32) * num_samps, GFP_ATOMIC); + data_buf = kmalloc_array(num_samps, sizeof(u32), GFP_ATOMIC); if (data_buf == NULL) return; @@ -23074,7 +23074,8 @@ wlc_phy_gen_load_samples_nphy(struct brcms_phy *pi, u32 f_kHz, u16 max_val, tbl_len = (phy_bw << 1); } - tone_buf = kmalloc(sizeof(struct cordic_iq) * tbl_len, GFP_ATOMIC); + tone_buf = kmalloc_array(tbl_len, sizeof(struct cordic_iq), + GFP_ATOMIC); if (tone_buf == NULL) return 0; diff --git a/drivers/net/wireless/cisco/airo.c b/drivers/net/wireless/cisco/airo.c index ce0fbf83285f..72046e182745 100644 --- a/drivers/net/wireless/cisco/airo.c +++ b/drivers/net/wireless/cisco/airo.c @@ -7127,7 +7127,7 @@ static int airo_get_aplist(struct net_device *dev, int i; int loseSync = capable(CAP_NET_ADMIN) ? 1: -1; - qual = kmalloc(IW_MAX_AP * sizeof(*qual), GFP_KERNEL); + qual = kmalloc_array(IW_MAX_AP, sizeof(*qual), GFP_KERNEL); if (!qual) return -ENOMEM; diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2100.c b/drivers/net/wireless/intel/ipw2x00/ipw2100.c index 7c4f550a1475..b8fd3cc90634 100644 --- a/drivers/net/wireless/intel/ipw2x00/ipw2100.c +++ b/drivers/net/wireless/intel/ipw2x00/ipw2100.c @@ -3445,8 +3445,9 @@ static int ipw2100_msg_allocate(struct ipw2100_priv *priv) dma_addr_t p; priv->msg_buffers = - kmalloc(IPW_COMMAND_POOL_SIZE * sizeof(struct ipw2100_tx_packet), - GFP_KERNEL); + kmalloc_array(IPW_COMMAND_POOL_SIZE, + sizeof(struct ipw2100_tx_packet), + GFP_KERNEL); if (!priv->msg_buffers) return -ENOMEM; @@ -4587,9 +4588,9 @@ static int ipw2100_rx_allocate(struct ipw2100_priv *priv) /* * allocate packets */ - priv->rx_buffers = kmalloc(RX_QUEUE_LENGTH * - sizeof(struct ipw2100_rx_packet), - GFP_KERNEL); + priv->rx_buffers = kmalloc_array(RX_QUEUE_LENGTH, + sizeof(struct ipw2100_rx_packet), + GFP_KERNEL); if (!priv->rx_buffers) { IPW_DEBUG_INFO("can't allocate rx packet buffer table\n"); diff --git a/drivers/net/wireless/intel/ipw2x00/ipw2200.c b/drivers/net/wireless/intel/ipw2x00/ipw2200.c index f26beeb6c5ff..8a858f7e36f4 100644 --- a/drivers/net/wireless/intel/ipw2x00/ipw2200.c +++ b/drivers/net/wireless/intel/ipw2x00/ipw2200.c @@ -3208,13 +3208,13 @@ static int ipw_load_firmware(struct ipw_priv *priv, u8 * data, size_t len) IPW_DEBUG_TRACE("<< :\n"); - virts = kmalloc(sizeof(void *) * CB_NUMBER_OF_ELEMENTS_SMALL, - GFP_KERNEL); + virts = kmalloc_array(CB_NUMBER_OF_ELEMENTS_SMALL, sizeof(void *), + GFP_KERNEL); if (!virts) return -ENOMEM; - phys = kmalloc(sizeof(dma_addr_t) * CB_NUMBER_OF_ELEMENTS_SMALL, - GFP_KERNEL); + phys = kmalloc_array(CB_NUMBER_OF_ELEMENTS_SMALL, sizeof(dma_addr_t), + GFP_KERNEL); if (!phys) { kfree(virts); return -ENOMEM; @@ -3782,7 +3782,7 @@ static int ipw_queue_tx_init(struct ipw_priv *priv, { struct pci_dev *dev = priv->pci_dev; - q->txb = kmalloc(sizeof(q->txb[0]) * count, GFP_KERNEL); + q->txb = kmalloc_array(count, sizeof(q->txb[0]), GFP_KERNEL); if (!q->txb) { IPW_ERROR("vmalloc for auxiliary BD structures failed\n"); return -ENOMEM; diff --git a/drivers/net/wireless/intersil/hostap/hostap_info.c b/drivers/net/wireless/intersil/hostap/hostap_info.c index de8a099a9386..da8c30f10d92 100644 --- a/drivers/net/wireless/intersil/hostap/hostap_info.c +++ b/drivers/net/wireless/intersil/hostap/hostap_info.c @@ -271,8 +271,9 @@ static void prism2_info_scanresults(local_info_t *local, unsigned char *buf, left -= 4; new_count = left / sizeof(struct hfa384x_scan_result); - results = kmalloc(new_count * sizeof(struct hfa384x_hostscan_result), - GFP_ATOMIC); + results = kmalloc_array(new_count, + sizeof(struct hfa384x_hostscan_result), + GFP_ATOMIC); if (results == NULL) return; diff --git a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c index c1bc0a6ef300..1ca9731d9b14 100644 --- a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c +++ b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c @@ -513,8 +513,8 @@ static int prism2_ioctl_giwaplist(struct net_device *dev, return -EOPNOTSUPP; } - addr = kmalloc(sizeof(struct sockaddr) * IW_MAX_AP, GFP_KERNEL); - qual = kmalloc(sizeof(struct iw_quality) * IW_MAX_AP, GFP_KERNEL); + addr = kmalloc_array(IW_MAX_AP, sizeof(struct sockaddr), GFP_KERNEL); + qual = kmalloc_array(IW_MAX_AP, sizeof(struct iw_quality), GFP_KERNEL); if (addr == NULL || qual == NULL) { kfree(addr); kfree(qual); diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_mac.c b/drivers/net/wireless/zydas/zd1211rw/zd_mac.c index b01b44a5d16e..1f6d9f357e57 100644 --- a/drivers/net/wireless/zydas/zd1211rw/zd_mac.c +++ b/drivers/net/wireless/zydas/zd1211rw/zd_mac.c @@ -732,7 +732,8 @@ static int zd_mac_config_beacon(struct ieee80211_hw *hw, struct sk_buff *beacon, /* Alloc memory for full beacon write at once. */ num_cmds = 1 + zd_chip_is_zd1211b(&mac->chip) + full_len; - ioreqs = kmalloc(num_cmds * sizeof(struct zd_ioreq32), GFP_KERNEL); + ioreqs = kmalloc_array(num_cmds, sizeof(struct zd_ioreq32), + GFP_KERNEL); if (!ioreqs) { r = -ENOMEM; goto out_nofree; diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c index 102646fedb56..ac0672b8dfca 100644 --- a/drivers/pcmcia/cistpl.c +++ b/drivers/pcmcia/cistpl.c @@ -1481,11 +1481,11 @@ static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf, u_char *tuplebuffer; u_char *tempbuffer; - tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL); + tuplebuffer = kmalloc_array(256, sizeof(u_char), GFP_KERNEL); if (!tuplebuffer) return -ENOMEM; - tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL); + tempbuffer = kmalloc_array(258, sizeof(u_char), GFP_KERNEL); if (!tempbuffer) { ret = -ENOMEM; goto free_tuple; diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c index e582a21cfe54..844537681fd7 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx.c +++ b/drivers/pinctrl/freescale/pinctrl-imx.c @@ -81,7 +81,8 @@ static int imx_dt_node_to_map(struct pinctrl_dev *pctldev, map_num++; } - new_map = kmalloc(sizeof(struct pinctrl_map) * map_num, GFP_KERNEL); + new_map = kmalloc_array(map_num, sizeof(struct pinctrl_map), + GFP_KERNEL); if (!new_map) return -ENOMEM; diff --git a/drivers/pinctrl/freescale/pinctrl-imx1-core.c b/drivers/pinctrl/freescale/pinctrl-imx1-core.c index 5af89de0ff02..e7169ac7799f 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx1-core.c +++ b/drivers/pinctrl/freescale/pinctrl-imx1-core.c @@ -241,7 +241,8 @@ static int imx1_dt_node_to_map(struct pinctrl_dev *pctldev, for (i = 0; i < grp->npins; i++) map_num++; - new_map = kmalloc(sizeof(struct pinctrl_map) * map_num, GFP_KERNEL); + new_map = kmalloc_array(map_num, sizeof(struct pinctrl_map), + GFP_KERNEL); if (!new_map) return -ENOMEM; diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c index 25e80a5370ca..44459d28efd5 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c @@ -352,7 +352,7 @@ static int sunxi_pctrl_dt_node_to_map(struct pinctrl_dev *pctldev, * any configuration. */ nmaps = npins * 2; - *map = kmalloc(nmaps * sizeof(struct pinctrl_map), GFP_KERNEL); + *map = kmalloc_array(nmaps, sizeof(struct pinctrl_map), GFP_KERNEL); if (!*map) return -ENOMEM; diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c index fb2c3599d95c..0af8c5295b65 100644 --- a/drivers/s390/block/dasd_eer.c +++ b/drivers/s390/block/dasd_eer.c @@ -561,8 +561,8 @@ static int dasd_eer_open(struct inode *inp, struct file *filp) return -EINVAL; } eerb->buffersize = eerb->buffer_page_count * PAGE_SIZE; - eerb->buffer = kmalloc(eerb->buffer_page_count * sizeof(char *), - GFP_KERNEL); + eerb->buffer = kmalloc_array(eerb->buffer_page_count, sizeof(char *), + GFP_KERNEL); if (!eerb->buffer) { kfree(eerb); return -ENOMEM; diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c index 1c98023cffd4..5b8af2782282 100644 --- a/drivers/s390/char/tty3270.c +++ b/drivers/s390/char/tty3270.c @@ -719,7 +719,8 @@ tty3270_alloc_view(void) if (!tp) goto out_err; tp->freemem_pages = - kmalloc(sizeof(void *) * TTY3270_STRING_PAGES, GFP_KERNEL); + kmalloc_array(TTY3270_STRING_PAGES, sizeof(void *), + GFP_KERNEL); if (!tp->freemem_pages) goto out_tp; INIT_LIST_HEAD(&tp->freemem); diff --git a/drivers/s390/crypto/pkey_api.c b/drivers/s390/crypto/pkey_api.c index ed80d00cdb6f..a9ae827cc1ce 100644 --- a/drivers/s390/crypto/pkey_api.c +++ b/drivers/s390/crypto/pkey_api.c @@ -899,9 +899,9 @@ int pkey_findcard(const struct pkey_seckey *seckey, return -EINVAL; /* fetch status of all crypto cards */ - device_status = kmalloc(MAX_ZDEV_ENTRIES_EXT - * sizeof(struct zcrypt_device_status_ext), - GFP_KERNEL); + device_status = kmalloc_array(MAX_ZDEV_ENTRIES_EXT, + sizeof(struct zcrypt_device_status_ext), + GFP_KERNEL); if (!device_status) return -ENOMEM; zcrypt_device_status_mask_ext(device_status); diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index e7961cbd2c55..a9831bd37a73 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -4132,7 +4132,7 @@ static int aac_convert_sgraw2(struct aac_raw_io2 *rio2, int pages, int nseg, int if (aac_convert_sgl == 0) return 0; - sge = kmalloc(nseg_new * sizeof(struct sge_ieee1212), GFP_ATOMIC); + sge = kmalloc_array(nseg_new, sizeof(struct sge_ieee1212), GFP_ATOMIC); if (sge == NULL) return -ENOMEM; diff --git a/drivers/scsi/aha1542.c b/drivers/scsi/aha1542.c index 124217927c4a..41add33e3f1f 100644 --- a/drivers/scsi/aha1542.c +++ b/drivers/scsi/aha1542.c @@ -400,7 +400,8 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd) #endif if (bufflen) { /* allocate memory before taking host_lock */ sg_count = scsi_sg_count(cmd); - cptr = kmalloc(sizeof(*cptr) * sg_count, GFP_KERNEL | GFP_DMA); + cptr = kmalloc_array(sg_count, sizeof(*cptr), + GFP_KERNEL | GFP_DMA); if (!cptr) return SCSI_MLQUEUE_HOST_BUSY; } else { diff --git a/drivers/scsi/aic7xxx/aic79xx_core.c b/drivers/scsi/aic7xxx/aic79xx_core.c index 034f4eebb160..67d292dcc607 100644 --- a/drivers/scsi/aic7xxx/aic79xx_core.c +++ b/drivers/scsi/aic7xxx/aic79xx_core.c @@ -7063,7 +7063,8 @@ ahd_init(struct ahd_softc *ahd) AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK); ahd->stack_size = ahd_probe_stack_size(ahd); - ahd->saved_stack = kmalloc(ahd->stack_size * sizeof(uint16_t), GFP_ATOMIC); + ahd->saved_stack = kmalloc_array(ahd->stack_size, sizeof(uint16_t), + GFP_ATOMIC); if (ahd->saved_stack == NULL) return (ENOMEM); diff --git a/drivers/scsi/aic94xx/aic94xx_hwi.c b/drivers/scsi/aic94xx/aic94xx_hwi.c index 2dbc8330d7d3..35e0b5b64e8f 100644 --- a/drivers/scsi/aic94xx/aic94xx_hwi.c +++ b/drivers/scsi/aic94xx/aic94xx_hwi.c @@ -291,7 +291,8 @@ static int asd_alloc_edbs(struct asd_ha_struct *asd_ha, gfp_t gfp_flags) struct asd_seq_data *seq = &asd_ha->seq; int i; - seq->edb_arr = kmalloc(seq->num_edbs*sizeof(*seq->edb_arr), gfp_flags); + seq->edb_arr = kmalloc_array(seq->num_edbs, sizeof(*seq->edb_arr), + gfp_flags); if (!seq->edb_arr) return -ENOMEM; @@ -323,8 +324,8 @@ static int asd_alloc_escbs(struct asd_ha_struct *asd_ha, struct asd_ascb *escb; int i, escbs; - seq->escb_arr = kmalloc(seq->num_escbs*sizeof(*seq->escb_arr), - gfp_flags); + seq->escb_arr = kmalloc_array(seq->num_escbs, sizeof(*seq->escb_arr), + gfp_flags); if (!seq->escb_arr) return -ENOMEM; diff --git a/drivers/scsi/arm/queue.c b/drivers/scsi/arm/queue.c index 3441ce3ebabf..996dfe903928 100644 --- a/drivers/scsi/arm/queue.c +++ b/drivers/scsi/arm/queue.c @@ -70,7 +70,7 @@ int queue_initialise (Queue_t *queue) * need to keep free lists or allocate this * memory. */ - queue->alloc = q = kmalloc(sizeof(QE_t) * nqueues, GFP_KERNEL); + queue->alloc = q = kmalloc_array(nqueues, sizeof(QE_t), GFP_KERNEL); if (q) { for (; nqueues; q++, nqueues--) { SET_MAGIC(q, QUEUE_MAGIC_FREE); diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index b3cfdd5f4d1c..d981c16cd611 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -2483,8 +2483,9 @@ static int beiscsi_alloc_mem(struct beiscsi_hba *phba) return -ENOMEM; } - mem_arr_orig = kmalloc(sizeof(*mem_arr_orig) * BEISCSI_MAX_FRAGS_INIT, - GFP_KERNEL); + mem_arr_orig = kmalloc_array(BEISCSI_MAX_FRAGS_INIT, + sizeof(*mem_arr_orig), + GFP_KERNEL); if (!mem_arr_orig) { kfree(phba->init_mem); kfree(phwi_ctrlr->wrb_context); @@ -2533,8 +2534,8 @@ static int beiscsi_alloc_mem(struct beiscsi_hba *phba) } while (alloc_size); mem_descr->num_elements = j; mem_descr->size_in_bytes = phba->mem_req[i]; - mem_descr->mem_array = kmalloc(sizeof(*mem_arr) * j, - GFP_KERNEL); + mem_descr->mem_array = kmalloc_array(j, sizeof(*mem_arr), + GFP_KERNEL); if (!mem_descr->mem_array) goto free_mem; @@ -3353,8 +3354,9 @@ beiscsi_create_wrb_rings(struct beiscsi_hba *phba, idx = 0; mem_descr = phba->init_mem; mem_descr += HWI_MEM_WRB; - pwrb_arr = kmalloc(sizeof(*pwrb_arr) * phba->params.cxns_per_ctrl, - GFP_KERNEL); + pwrb_arr = kmalloc_array(phba->params.cxns_per_ctrl, + sizeof(*pwrb_arr), + GFP_KERNEL); if (!pwrb_arr) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Memory alloc failed in create wrb ring.\n"); diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index 097f37de6ce9..ea23c8dffc25 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -1390,8 +1390,8 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip, */ num_vlink_desc = rlen / sizeof(*vp); if (num_vlink_desc) - vlink_desc_arr = kmalloc(sizeof(vp) * num_vlink_desc, - GFP_ATOMIC); + vlink_desc_arr = kmalloc_array(num_vlink_desc, sizeof(vp), + GFP_ATOMIC); if (!vlink_desc_arr) return; num_vlink_desc = 0; diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 3a9eca163db8..e6f31fa9ec65 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -2177,8 +2177,9 @@ static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h) return -ENOMEM; for (i = 0; i < h->nr_cmds; i++) { h->ioaccel2_cmd_sg_list[i] = - kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) * - h->maxsgentries, GFP_KERNEL); + kmalloc_array(h->maxsgentries, + sizeof(*h->ioaccel2_cmd_sg_list[i]), + GFP_KERNEL); if (!h->ioaccel2_cmd_sg_list[i]) goto clean; } @@ -2216,8 +2217,9 @@ static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h) return -ENOMEM; for (i = 0; i < h->nr_cmds; i++) { - h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) * - h->chainsize, GFP_KERNEL); + h->cmd_sg_list[i] = kmalloc_array(h->chainsize, + sizeof(*h->cmd_sg_list[i]), + GFP_KERNEL); if (!h->cmd_sg_list[i]) goto clean; @@ -6407,7 +6409,7 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) status = -ENOMEM; goto cleanup1; } - buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL); + buff_size = kmalloc_array(SG_ENTRIES_IN_CMD, sizeof(int), GFP_KERNEL); if (!buff_size) { status = -ENOMEM; goto cleanup1; @@ -7151,7 +7153,7 @@ static int controller_reset_failed(struct CfgTable __iomem *cfgtable) char *driver_ver, *old_driver_ver; int rc, size = sizeof(cfgtable->driver_version); - old_driver_ver = kmalloc(2 * size, GFP_KERNEL); + old_driver_ver = kmalloc_array(2, size, GFP_KERNEL); if (!old_driver_ver) return -ENOMEM; driver_ver = old_driver_ver + size; diff --git a/drivers/scsi/lpfc/lpfc_mem.c b/drivers/scsi/lpfc/lpfc_mem.c index 41361662ff08..0758edb9dfe2 100644 --- a/drivers/scsi/lpfc/lpfc_mem.c +++ b/drivers/scsi/lpfc/lpfc_mem.c @@ -120,8 +120,9 @@ lpfc_mem_alloc(struct lpfc_hba *phba, int align) if (!phba->lpfc_mbuf_pool) goto fail_free_dma_buf_pool; - pool->elements = kmalloc(sizeof(struct lpfc_dmabuf) * - LPFC_MBUF_POOL_SIZE, GFP_KERNEL); + pool->elements = kmalloc_array(LPFC_MBUF_POOL_SIZE, + sizeof(struct lpfc_dmabuf), + GFP_KERNEL); if (!pool->elements) goto fail_free_lpfc_mbuf_pool; diff --git a/drivers/scsi/mac53c94.c b/drivers/scsi/mac53c94.c index 8c4d3003b68b..177701dfdfcb 100644 --- a/drivers/scsi/mac53c94.c +++ b/drivers/scsi/mac53c94.c @@ -464,8 +464,9 @@ static int mac53c94_probe(struct macio_dev *mdev, const struct of_device_id *mat * +1 to allow for aligning. * XXX FIXME: Use DMA consistent routines */ - dma_cmd_space = kmalloc((host->sg_tablesize + 2) * - sizeof(struct dbdma_cmd), GFP_KERNEL); + dma_cmd_space = kmalloc_array(host->sg_tablesize + 2, + sizeof(struct dbdma_cmd), + GFP_KERNEL); if (dma_cmd_space == 0) { printk(KERN_ERR "mac53c94: couldn't allocate dma " "command space for %pOF\n", node); diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c index 3b3767e240d8..8e8cf1145d7f 100644 --- a/drivers/scsi/megaraid.c +++ b/drivers/scsi/megaraid.c @@ -4292,7 +4292,8 @@ megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) goto out_host_put; } - adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL); + adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t), + GFP_KERNEL); if (!adapter->scb_list) { dev_warn(&pdev->dev, "out of RAM\n"); goto out_free_cmd_buffer; diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/megaraid_mm.c index bb802b0c12b8..8428247015db 100644 --- a/drivers/scsi/megaraid/megaraid_mm.c +++ b/drivers/scsi/megaraid/megaraid_mm.c @@ -935,10 +935,12 @@ mraid_mm_register_adp(mraid_mmadp_t *lld_adp) * Allocate single blocks of memory for all required kiocs, * mailboxes and passthru structures. */ - adapter->kioc_list = kmalloc(sizeof(uioc_t) * lld_adp->max_kioc, - GFP_KERNEL); - adapter->mbox_list = kmalloc(sizeof(mbox64_t) * lld_adp->max_kioc, - GFP_KERNEL); + adapter->kioc_list = kmalloc_array(lld_adp->max_kioc, + sizeof(uioc_t), + GFP_KERNEL); + adapter->mbox_list = kmalloc_array(lld_adp->max_kioc, + sizeof(mbox64_t), + GFP_KERNEL); adapter->pthru_dma_pool = dma_pool_create("megaraid mm pthru pool", &adapter->pdev->dev, sizeof(mraid_passthru_t), diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c index 2bbe797f8c3d..773c4bfeb0f8 100644 --- a/drivers/scsi/osst.c +++ b/drivers/scsi/osst.c @@ -5856,7 +5856,9 @@ static int osst_probe(struct device *dev) /* if this is the first attach, build the infrastructure */ write_lock(&os_scsi_tapes_lock); if (os_scsi_tapes == NULL) { - os_scsi_tapes = kmalloc(osst_max_dev * sizeof(struct osst_tape *), GFP_ATOMIC); + os_scsi_tapes = kmalloc_array(osst_max_dev, + sizeof(struct osst_tape *), + GFP_ATOMIC); if (os_scsi_tapes == NULL) { write_unlock(&os_scsi_tapes_lock); printk(KERN_ERR "osst :E: Unable to allocate array for OnStream SCSI tapes.\n"); diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c index 872d66dd79cd..de2bc78449e7 100644 --- a/drivers/scsi/qla2xxx/qla_nx.c +++ b/drivers/scsi/qla2xxx/qla_nx.c @@ -1230,7 +1230,7 @@ qla82xx_pinit_from_rom(scsi_qla_host_t *vha) ql_log(ql_log_info, vha, 0x0072, "%d CRB init values found in ROM.\n", n); - buf = kmalloc(n * sizeof(struct crb_addr_pair), GFP_KERNEL); + buf = kmalloc_array(n, sizeof(struct crb_addr_pair), GFP_KERNEL); if (buf == NULL) { ql_log(ql_log_fatal, vha, 0x010c, "Unable to allocate memory.\n"); diff --git a/drivers/scsi/qla4xxx/ql4_nx.c b/drivers/scsi/qla4xxx/ql4_nx.c index 43f73583ef5c..d2b333d629be 100644 --- a/drivers/scsi/qla4xxx/ql4_nx.c +++ b/drivers/scsi/qla4xxx/ql4_nx.c @@ -1077,7 +1077,7 @@ qla4_82xx_pinit_from_rom(struct scsi_qla_host *ha, int verbose) ql4_printk(KERN_INFO, ha, "%s: %d CRB init values found in ROM.\n", DRIVER_NAME, n); - buf = kmalloc(n * sizeof(struct crb_addr_pair), GFP_KERNEL); + buf = kmalloc_array(n, sizeof(struct crb_addr_pair), GFP_KERNEL); if (buf == NULL) { ql4_printk(KERN_WARNING, ha, "%s: [ERROR] Unable to malloc memory.\n", DRIVER_NAME); diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 592b6dbf8b35..8332f958cc42 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -1820,8 +1820,9 @@ static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info) num_new_devices = num_physicals + num_logicals; - new_device_list = kmalloc(sizeof(*new_device_list) * - num_new_devices, GFP_KERNEL); + new_device_list = kmalloc_array(num_new_devices, + sizeof(*new_device_list), + GFP_KERNEL); if (!new_device_list) { dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg); rc = -ENOMEM; diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c index c9e27e752c25..c16e4de3a03f 100644 --- a/drivers/scsi/st.c +++ b/drivers/scsi/st.c @@ -4915,7 +4915,8 @@ static int sgl_map_user_pages(struct st_buffer *STbp, if (count == 0) return 0; - if ((pages = kmalloc(max_pages * sizeof(*pages), GFP_KERNEL)) == NULL) + pages = kmalloc_array(max_pages, sizeof(*pages), GFP_KERNEL); + if (pages == NULL) return -ENOMEM; /* Try to fault in all of the necessary pages */ diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index 45d04631888a..6dc8891ccb74 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -794,9 +794,10 @@ static int virtscsi_init(struct virtio_device *vdev, struct irq_affinity desc = { .pre_vectors = 2 }; num_vqs = vscsi->num_queues + VIRTIO_SCSI_VQ_BASE; - vqs = kmalloc(num_vqs * sizeof(struct virtqueue *), GFP_KERNEL); - callbacks = kmalloc(num_vqs * sizeof(vq_callback_t *), GFP_KERNEL); - names = kmalloc(num_vqs * sizeof(char *), GFP_KERNEL); + vqs = kmalloc_array(num_vqs, sizeof(struct virtqueue *), GFP_KERNEL); + callbacks = kmalloc_array(num_vqs, sizeof(vq_callback_t *), + GFP_KERNEL); + names = kmalloc_array(num_vqs, sizeof(char *), GFP_KERNEL); if (!callbacks || !vqs || !names) { err = -ENOMEM; diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c index ba3cfa8e279b..a7e94a3decf2 100644 --- a/drivers/soc/fsl/qbman/qman.c +++ b/drivers/soc/fsl/qbman/qman.c @@ -1181,7 +1181,7 @@ static int qman_create_portal(struct qman_portal *portal, qm_dqrr_set_ithresh(p, QMAN_PIRQ_DQRR_ITHRESH); qm_mr_set_ithresh(p, QMAN_PIRQ_MR_ITHRESH); qm_out(p, QM_REG_ITPR, QMAN_PIRQ_IPERIOD); - portal->cgrs = kmalloc(2 * sizeof(*cgrs), GFP_KERNEL); + portal->cgrs = kmalloc_array(2, sizeof(*cgrs), GFP_KERNEL); if (!portal->cgrs) goto fail_cgrs; /* initial snapshot is no-depletion */ diff --git a/drivers/staging/media/zoran/zoran_driver.c b/drivers/staging/media/zoran/zoran_driver.c index d2e13fffbc6b..906c3549e2ba 100644 --- a/drivers/staging/media/zoran/zoran_driver.c +++ b/drivers/staging/media/zoran/zoran_driver.c @@ -941,7 +941,7 @@ static int zoran_open(struct file *file) /* used to be BUZ_MAX_WIDTH/HEIGHT, but that gives overflows * on norm-change! */ fh->overlay_mask = - kmalloc(((768 + 31) / 32) * 576 * 4, GFP_KERNEL); + kmalloc(array3_size((768 + 31) / 32, 576, 4), GFP_KERNEL); if (!fh->overlay_mask) { dprintk(1, KERN_ERR diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c index 37a610d05ad2..f2cdcc2bcab4 100644 --- a/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c +++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c @@ -597,8 +597,9 @@ static void RxReorderIndicatePacket(struct ieee80211_device *ieee, bool bMatchWinStart = false, bPktInBuf = false; IEEE80211_DEBUG(IEEE80211_DL_REORDER,"%s(): Seq is %d,pTS->RxIndicateSeq is %d, WinSize is %d\n",__func__,SeqNum,pTS->RxIndicateSeq,WinSize); - prxbIndicateArray = kmalloc(sizeof(struct ieee80211_rxb *) * - REORDER_WIN_SIZE, GFP_KERNEL); + prxbIndicateArray = kmalloc_array(REORDER_WIN_SIZE, + sizeof(struct ieee80211_rxb *), + GFP_KERNEL); if (!prxbIndicateArray) return; diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c index a4df95cc7f60..8b17400f6c13 100644 --- a/drivers/staging/rtl8192u/r8192U_core.c +++ b/drivers/staging/rtl8192u/r8192U_core.c @@ -1640,8 +1640,8 @@ static short rtl8192_usb_initendpoints(struct net_device *dev) { struct r8192_priv *priv = ieee80211_priv(dev); - priv->rx_urb = kmalloc(sizeof(struct urb *) * (MAX_RX_URB + 1), - GFP_KERNEL); + priv->rx_urb = kmalloc_array(MAX_RX_URB + 1, sizeof(struct urb *), + GFP_KERNEL); if (!priv->rx_urb) return -ENOMEM; diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c index 1db1d97e72e7..cb4db1b3ca3c 100644 --- a/drivers/tty/hvc/hvcs.c +++ b/drivers/tty/hvc/hvcs.c @@ -1441,7 +1441,8 @@ static int hvcs_alloc_index_list(int n) { int i; - hvcs_index_list = kmalloc(n * sizeof(hvcs_index_count),GFP_KERNEL); + hvcs_index_list = kmalloc_array(n, sizeof(hvcs_index_count), + GFP_KERNEL); if (!hvcs_index_list) return -ENOMEM; hvcs_index_count = n; diff --git a/drivers/tty/isicom.c b/drivers/tty/isicom.c index bdd3027ef01b..8d96e86966f1 100644 --- a/drivers/tty/isicom.c +++ b/drivers/tty/isicom.c @@ -1477,7 +1477,7 @@ static int load_firmware(struct pci_dev *pdev, goto errrelfw; } - data = kmalloc(word_count * 2, GFP_KERNEL); + data = kmalloc_array(word_count, 2, GFP_KERNEL); if (data == NULL) { dev_err(&pdev->dev, "Card%d, firmware upload " "failed, not enough memory\n", index + 1); diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index 55b3eff148b1..8e4428725848 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -2738,8 +2738,9 @@ static int atmel_serial_probe(struct platform_device *pdev) if (!atmel_use_pdc_rx(&atmel_port->uart)) { ret = -ENOMEM; - data = kmalloc(sizeof(struct atmel_uart_char) - * ATMEL_SERIAL_RINGSIZE, GFP_KERNEL); + data = kmalloc_array(ATMEL_SERIAL_RINGSIZE, + sizeof(struct atmel_uart_char), + GFP_KERNEL); if (!data) goto err_alloc_ring; atmel_port->rx_ring.buf = data; diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c index 722a6690c70d..7c7ada0b3ea0 100644 --- a/drivers/tty/vt/consolemap.c +++ b/drivers/tty/vt/consolemap.c @@ -231,7 +231,7 @@ static void set_inverse_trans_unicode(struct vc_data *conp, q = p->inverse_trans_unicode; if (!q) { q = p->inverse_trans_unicode = - kmalloc(MAX_GLYPH * sizeof(u16), GFP_KERNEL); + kmalloc_array(MAX_GLYPH, sizeof(u16), GFP_KERNEL); if (!q) return; } @@ -479,7 +479,8 @@ con_insert_unipair(struct uni_pagedir *p, u_short unicode, u_short fontpos) p1 = p->uni_pgdir[n = unicode >> 11]; if (!p1) { - p1 = p->uni_pgdir[n] = kmalloc(32*sizeof(u16 *), GFP_KERNEL); + p1 = p->uni_pgdir[n] = kmalloc_array(32, sizeof(u16 *), + GFP_KERNEL); if (!p1) return -ENOMEM; for (i = 0; i < 32; i++) p1[i] = NULL; @@ -487,7 +488,7 @@ con_insert_unipair(struct uni_pagedir *p, u_short unicode, u_short fontpos) p2 = p1[n = (unicode >> 6) & 0x1f]; if (!p2) { - p2 = p1[n] = kmalloc(64*sizeof(u16), GFP_KERNEL); + p2 = p1[n] = kmalloc_array(64, sizeof(u16), GFP_KERNEL); if (!p2) return -ENOMEM; memset(p2, 0xff, 64*sizeof(u16)); /* No glyphs for the characters (yet) */ } diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c index 5d412df8e943..d5b4a2b44ab8 100644 --- a/drivers/tty/vt/keyboard.c +++ b/drivers/tty/vt/keyboard.c @@ -1624,7 +1624,7 @@ int vt_do_diacrit(unsigned int cmd, void __user *udp, int perm) struct kbdiacr *dia; int i; - dia = kmalloc(MAX_DIACR * sizeof(struct kbdiacr), + dia = kmalloc_array(MAX_DIACR, sizeof(struct kbdiacr), GFP_KERNEL); if (!dia) return -ENOMEM; @@ -1657,7 +1657,7 @@ int vt_do_diacrit(unsigned int cmd, void __user *udp, int perm) struct kbdiacrsuc __user *a = udp; void *buf; - buf = kmalloc(MAX_DIACR * sizeof(struct kbdiacruc), + buf = kmalloc_array(MAX_DIACR, sizeof(struct kbdiacruc), GFP_KERNEL); if (buf == NULL) return -ENOMEM; diff --git a/drivers/tty/vt/selection.c b/drivers/tty/vt/selection.c index 7851383fbd6c..90ea1cc52b7a 100644 --- a/drivers/tty/vt/selection.c +++ b/drivers/tty/vt/selection.c @@ -280,7 +280,8 @@ int set_selection(const struct tiocl_selection __user *sel, struct tty_struct *t /* Allocate a new buffer before freeing the old one ... */ multiplier = use_unicode ? 3 : 1; /* chars can take up to 3 bytes */ - bp = kmalloc(((sel_end-sel_start)/2+1)*multiplier, GFP_KERNEL); + bp = kmalloc_array((sel_end - sel_start) / 2 + 1, multiplier, + GFP_KERNEL); if (!bp) { printk(KERN_WARNING "selection: kmalloc() failed\n"); clear_selection(); diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 76e16c5251b9..476dcc5f2da3 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -897,7 +897,7 @@ static int parse_usbdevfs_streams(struct usb_dev_state *ps, if (num_streams_ret && (num_streams < 2 || num_streams > 65536)) return -EINVAL; - eps = kmalloc(num_eps * sizeof(*eps), GFP_KERNEL); + eps = kmalloc_array(num_eps, sizeof(*eps), GFP_KERNEL); if (!eps) return -ENOMEM; @@ -1602,8 +1602,9 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb as->mem_usage = u; if (num_sgs) { - as->urb->sg = kmalloc(num_sgs * sizeof(struct scatterlist), - GFP_KERNEL); + as->urb->sg = kmalloc_array(num_sgs, + sizeof(struct scatterlist), + GFP_KERNEL); if (!as->urb->sg) { ret = -ENOMEM; goto error; diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 7b137003c2be..1a15392326fc 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -390,7 +390,7 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev, } /* initialize all the urbs we'll use */ - io->urbs = kmalloc(io->entries * sizeof(*io->urbs), mem_flags); + io->urbs = kmalloc_array(io->entries, sizeof(*io->urbs), mem_flags); if (!io->urbs) goto nomem; @@ -1824,8 +1824,8 @@ int usb_set_configuration(struct usb_device *dev, int configuration) n = nintf = 0; if (cp) { nintf = cp->desc.bNumInterfaces; - new_interfaces = kmalloc(nintf * sizeof(*new_interfaces), - GFP_NOIO); + new_interfaces = kmalloc_array(nintf, sizeof(*new_interfaces), + GFP_NOIO); if (!new_interfaces) return -ENOMEM; diff --git a/drivers/usb/host/fhci-tds.c b/drivers/usb/host/fhci-tds.c index 3a4e8f616751..f3308ce25043 100644 --- a/drivers/usb/host/fhci-tds.c +++ b/drivers/usb/host/fhci-tds.c @@ -189,7 +189,7 @@ u32 fhci_create_ep(struct fhci_usb *usb, enum fhci_mem_alloc data_mem, goto err; } - buff = kmalloc(1028 * sizeof(*buff), GFP_KERNEL); + buff = kmalloc_array(1028, sizeof(*buff), GFP_KERNEL); if (!buff) { kfree(pkt); err_for = "buffer"; diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c index d3ee1f52aaab..4f267dc93882 100644 --- a/drivers/usb/host/ohci-dbg.c +++ b/drivers/usb/host/ohci-dbg.c @@ -492,7 +492,7 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf) char *next; unsigned i; - seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC); + seen = kmalloc_array(DBG_SCHED_LIMIT, sizeof(*seen), GFP_ATOMIC); if (!seen) return 0; seen_count = 0; diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index 236a60f53099..c2e255f02a72 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -695,7 +695,10 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n"); dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint); - dev->ring_buffer = kmalloc(ring_buffer_size*(sizeof(size_t)+dev->interrupt_in_endpoint_size), GFP_KERNEL); + dev->ring_buffer = + kmalloc_array(ring_buffer_size, + sizeof(size_t) + dev->interrupt_in_endpoint_size, + GFP_KERNEL); if (!dev->ring_buffer) goto error; dev->interrupt_in_buffer = kmalloc(dev->interrupt_in_endpoint_size, GFP_KERNEL); @@ -706,7 +709,9 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * goto error; dev->interrupt_out_endpoint_size = dev->interrupt_out_endpoint ? usb_endpoint_maxp(dev->interrupt_out_endpoint) : udev->descriptor.bMaxPacketSize0; - dev->interrupt_out_buffer = kmalloc(write_buffer_size*dev->interrupt_out_endpoint_size, GFP_KERNEL); + dev->interrupt_out_buffer = + kmalloc_array(write_buffer_size, + dev->interrupt_out_endpoint_size, GFP_KERNEL); if (!dev->interrupt_out_buffer) goto error; dev->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL); diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 62c91e360baf..2fb71303ec3a 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -736,7 +736,7 @@ static int iuu_uart_on(struct usb_serial_port *port) int status; u8 *buf; - buf = kmalloc(sizeof(u8) * 4, GFP_KERNEL); + buf = kmalloc(4, GFP_KERNEL); if (!buf) return -ENOMEM; @@ -790,7 +790,7 @@ static int iuu_uart_baud(struct usb_serial_port *port, u32 baud_base, unsigned int T1FrekvensHZ = 0; dev_dbg(&port->dev, "%s - enter baud_base=%d\n", __func__, baud_base); - dataout = kmalloc(sizeof(u8) * 5, GFP_KERNEL); + dataout = kmalloc(5, GFP_KERNEL); if (!dataout) return -ENOMEM; diff --git a/drivers/usb/storage/alauda.c b/drivers/usb/storage/alauda.c index 900591df8bb2..6b8edf6178df 100644 --- a/drivers/usb/storage/alauda.c +++ b/drivers/usb/storage/alauda.c @@ -1025,7 +1025,7 @@ static int alauda_write_data(struct us_data *us, unsigned long address, * We also need a temporary block buffer, where we read in the old data, * overwrite parts with the new data, and manipulate the redundancy data */ - blockbuffer = kmalloc((pagesize + 64) * blocksize, GFP_NOIO); + blockbuffer = kmalloc_array(pagesize + 64, blocksize, GFP_NOIO); if (!blockbuffer) { kfree(buffer); return USB_STOR_TRANSPORT_ERROR; diff --git a/drivers/usb/storage/ene_ub6250.c b/drivers/usb/storage/ene_ub6250.c index 93cf57ac47d6..4d261e4de9ad 100644 --- a/drivers/usb/storage/ene_ub6250.c +++ b/drivers/usb/storage/ene_ub6250.c @@ -807,8 +807,12 @@ static int ms_lib_alloc_logicalmap(struct us_data *us) u32 i; struct ene_ub6250_info *info = (struct ene_ub6250_info *) us->extra; - info->MS_Lib.Phy2LogMap = kmalloc(info->MS_Lib.NumberOfPhyBlock * sizeof(u16), GFP_KERNEL); - info->MS_Lib.Log2PhyMap = kmalloc(info->MS_Lib.NumberOfLogBlock * sizeof(u16), GFP_KERNEL); + info->MS_Lib.Phy2LogMap = kmalloc_array(info->MS_Lib.NumberOfPhyBlock, + sizeof(u16), + GFP_KERNEL); + info->MS_Lib.Log2PhyMap = kmalloc_array(info->MS_Lib.NumberOfLogBlock, + sizeof(u16), + GFP_KERNEL); if ((info->MS_Lib.Phy2LogMap == NULL) || (info->MS_Lib.Log2PhyMap == NULL)) { ms_lib_free_logicalmap(us); @@ -1113,8 +1117,12 @@ static int ms_lib_alloc_writebuf(struct us_data *us) info->MS_Lib.wrtblk = (u16)-1; - info->MS_Lib.blkpag = kmalloc(info->MS_Lib.PagesPerBlock * info->MS_Lib.BytesPerSector, GFP_KERNEL); - info->MS_Lib.blkext = kmalloc(info->MS_Lib.PagesPerBlock * sizeof(struct ms_lib_type_extdat), GFP_KERNEL); + info->MS_Lib.blkpag = kmalloc_array(info->MS_Lib.PagesPerBlock, + info->MS_Lib.BytesPerSector, + GFP_KERNEL); + info->MS_Lib.blkext = kmalloc_array(info->MS_Lib.PagesPerBlock, + sizeof(struct ms_lib_type_extdat), + GFP_KERNEL); if ((info->MS_Lib.blkpag == NULL) || (info->MS_Lib.blkext == NULL)) { ms_lib_free_writebuf(us); diff --git a/drivers/usb/storage/sddr09.c b/drivers/usb/storage/sddr09.c index 1cf7dbfe277c..bc9da736bdfc 100644 --- a/drivers/usb/storage/sddr09.c +++ b/drivers/usb/storage/sddr09.c @@ -1231,8 +1231,8 @@ sddr09_read_map(struct us_data *us) { kfree(info->lba_to_pba); kfree(info->pba_to_lba); - info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO); - info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO); + info->lba_to_pba = kmalloc_array(numblocks, sizeof(int), GFP_NOIO); + info->pba_to_lba = kmalloc_array(numblocks, sizeof(int), GFP_NOIO); if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) { printk(KERN_WARNING "sddr09_read_map: out of memory\n"); diff --git a/drivers/usb/storage/sddr55.c b/drivers/usb/storage/sddr55.c index 8c814b2ec9b2..b8527c55335b 100644 --- a/drivers/usb/storage/sddr55.c +++ b/drivers/usb/storage/sddr55.c @@ -651,7 +651,7 @@ static int sddr55_read_map(struct us_data *us) { numblocks = info->capacity >> (info->blockshift + info->pageshift); - buffer = kmalloc( numblocks * 2, GFP_NOIO ); + buffer = kmalloc_array(numblocks, 2, GFP_NOIO ); if (!buffer) return -1; @@ -684,8 +684,8 @@ static int sddr55_read_map(struct us_data *us) { kfree(info->lba_to_pba); kfree(info->pba_to_lba); - info->lba_to_pba = kmalloc(numblocks*sizeof(int), GFP_NOIO); - info->pba_to_lba = kmalloc(numblocks*sizeof(int), GFP_NOIO); + info->lba_to_pba = kmalloc_array(numblocks, sizeof(int), GFP_NOIO); + info->pba_to_lba = kmalloc_array(numblocks, sizeof(int), GFP_NOIO); if (info->lba_to_pba == NULL || info->pba_to_lba == NULL) { kfree(info->lba_to_pba); diff --git a/drivers/uwb/est.c b/drivers/uwb/est.c index f3e232584284..ad30ddfe30b3 100644 --- a/drivers/uwb/est.c +++ b/drivers/uwb/est.c @@ -217,7 +217,7 @@ static int uwb_est_grow(void) { size_t actual_size = uwb_est_size * sizeof(uwb_est[0]); - void *new = kmalloc(2 * actual_size, GFP_ATOMIC); + void *new = kmalloc_array(2, actual_size, GFP_ATOMIC); if (new == NULL) return -ENOMEM; memcpy(new, uwb_est, actual_size); diff --git a/drivers/uwb/i1480/dfu/usb.c b/drivers/uwb/i1480/dfu/usb.c index a50cf45e530f..c0430a41e24b 100644 --- a/drivers/uwb/i1480/dfu/usb.c +++ b/drivers/uwb/i1480/dfu/usb.c @@ -376,7 +376,7 @@ int i1480_usb_probe(struct usb_interface *iface, const struct usb_device_id *id) i1480 = &i1480_usb->i1480; i1480->buf_size = 512; - i1480->cmd_buf = kmalloc(2 * i1480->buf_size, GFP_KERNEL); + i1480->cmd_buf = kmalloc_array(2, i1480->buf_size, GFP_KERNEL); if (i1480->cmd_buf == NULL) { dev_err(dev, "Cannot allocate transfer buffers\n"); result = -ENOMEM; diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index e7cf7d21cfb5..686dc670fd29 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -274,8 +274,10 @@ static int vhost_net_set_ubuf_info(struct vhost_net *n) zcopy = vhost_net_zcopy_mask & (0x1 << i); if (!zcopy) continue; - n->vqs[i].ubuf_info = kmalloc(sizeof(*n->vqs[i].ubuf_info) * - UIO_MAXIOV, GFP_KERNEL); + n->vqs[i].ubuf_info = + kmalloc_array(UIO_MAXIOV, + sizeof(*n->vqs[i].ubuf_info), + GFP_KERNEL); if (!n->vqs[i].ubuf_info) goto err; } @@ -943,7 +945,7 @@ static int vhost_net_open(struct inode *inode, struct file *f) n = kvmalloc(sizeof *n, GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (!n) return -ENOMEM; - vqs = kmalloc(VHOST_NET_VQ_MAX * sizeof(*vqs), GFP_KERNEL); + vqs = kmalloc_array(VHOST_NET_VQ_MAX, sizeof(*vqs), GFP_KERNEL); if (!vqs) { kvfree(n); return -ENOMEM; diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 7ad57094d736..ce10eb75b042 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -1378,7 +1378,7 @@ static int vhost_scsi_open(struct inode *inode, struct file *f) goto err_vs; } - vqs = kmalloc(VHOST_SCSI_MAX_VQ * sizeof(*vqs), GFP_KERNEL); + vqs = kmalloc_array(VHOST_SCSI_MAX_VQ, sizeof(*vqs), GFP_KERNEL); if (!vqs) goto err_vqs; diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c index 906b8f0f19f7..40589850eb33 100644 --- a/drivers/vhost/test.c +++ b/drivers/vhost/test.c @@ -107,7 +107,7 @@ static int vhost_test_open(struct inode *inode, struct file *f) if (!n) return -ENOMEM; - vqs = kmalloc(VHOST_TEST_VQ_MAX * sizeof(*vqs), GFP_KERNEL); + vqs = kmalloc_array(VHOST_TEST_VQ_MAX, sizeof(*vqs), GFP_KERNEL); if (!vqs) { kfree(n); return -ENOMEM; diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index f9bce818da11..ce8c95b6365b 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -385,10 +385,13 @@ static long vhost_dev_alloc_iovecs(struct vhost_dev *dev) for (i = 0; i < dev->nvqs; ++i) { vq = dev->vqs[i]; - vq->indirect = kmalloc(sizeof *vq->indirect * UIO_MAXIOV, - GFP_KERNEL); - vq->log = kmalloc(sizeof *vq->log * UIO_MAXIOV, GFP_KERNEL); - vq->heads = kmalloc(sizeof *vq->heads * UIO_MAXIOV, GFP_KERNEL); + vq->indirect = kmalloc_array(UIO_MAXIOV, + sizeof(*vq->indirect), + GFP_KERNEL); + vq->log = kmalloc_array(UIO_MAXIOV, sizeof(*vq->log), + GFP_KERNEL); + vq->heads = kmalloc_array(UIO_MAXIOV, sizeof(*vq->heads), + GFP_KERNEL); if (!vq->indirect || !vq->log || !vq->heads) goto err_nomem; } diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c index bb8971f2a634..a94d700a4503 100644 --- a/drivers/vhost/vringh.c +++ b/drivers/vhost/vringh.c @@ -191,7 +191,7 @@ static int resize_iovec(struct vringh_kiov *iov, gfp_t gfp) if (flag) new = krealloc(iov->iov, new_num * sizeof(struct iovec), gfp); else { - new = kmalloc(new_num * sizeof(struct iovec), gfp); + new = kmalloc_array(new_num, sizeof(struct iovec), gfp); if (new) { memcpy(new, iov->iov, iov->max_num * sizeof(struct iovec)); diff --git a/drivers/video/fbdev/core/bitblit.c b/drivers/video/fbdev/core/bitblit.c index 790900d646c0..ca935c09a261 100644 --- a/drivers/video/fbdev/core/bitblit.c +++ b/drivers/video/fbdev/core/bitblit.c @@ -269,7 +269,7 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode, if (attribute) { u8 *dst; - dst = kmalloc(w * vc->vc_font.height, GFP_ATOMIC); + dst = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC); if (!dst) return; kfree(ops->cursor_data); @@ -312,7 +312,7 @@ static void bit_cursor(struct vc_data *vc, struct fb_info *info, int mode, vc->vc_cursor_type != ops->p->cursor_shape || ops->cursor_state.mask == NULL || ops->cursor_reset) { - char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC); + char *mask = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC); int cur_height, size, i = 0; u8 msk = 0xff; diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index 3e330e0f56ed..c910e74d46ff 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -591,7 +591,8 @@ static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, if (scr_readw(r) != vc->vc_video_erase_char) break; if (r != q && new_rows >= rows + logo_lines) { - save = kmalloc(logo_lines * new_cols * 2, GFP_KERNEL); + save = kmalloc(array3_size(logo_lines, new_cols, 2), + GFP_KERNEL); if (save) { int i = cols < new_cols ? cols : new_cols; scr_memsetw(save, erase, logo_lines * new_cols * 2); diff --git a/drivers/video/fbdev/core/fbcon_ccw.c b/drivers/video/fbdev/core/fbcon_ccw.c index 37a8b0b22566..dfa9a8aa4509 100644 --- a/drivers/video/fbdev/core/fbcon_ccw.c +++ b/drivers/video/fbdev/core/fbcon_ccw.c @@ -258,7 +258,7 @@ static void ccw_cursor(struct vc_data *vc, struct fb_info *info, int mode, if (attribute) { u8 *dst; - dst = kmalloc(w * vc->vc_font.width, GFP_ATOMIC); + dst = kmalloc_array(w, vc->vc_font.width, GFP_ATOMIC); if (!dst) return; kfree(ops->cursor_data); @@ -304,14 +304,15 @@ static void ccw_cursor(struct vc_data *vc, struct fb_info *info, int mode, vc->vc_cursor_type != ops->p->cursor_shape || ops->cursor_state.mask == NULL || ops->cursor_reset) { - char *tmp, *mask = kmalloc(w*vc->vc_font.width, GFP_ATOMIC); + char *tmp, *mask = kmalloc_array(w, vc->vc_font.width, + GFP_ATOMIC); int cur_height, size, i = 0; int width = (vc->vc_font.width + 7)/8; if (!mask) return; - tmp = kmalloc(width * vc->vc_font.height, GFP_ATOMIC); + tmp = kmalloc_array(width, vc->vc_font.height, GFP_ATOMIC); if (!tmp) { kfree(mask); diff --git a/drivers/video/fbdev/core/fbcon_cw.c b/drivers/video/fbdev/core/fbcon_cw.c index 1888f8c866e8..ce08251bfd38 100644 --- a/drivers/video/fbdev/core/fbcon_cw.c +++ b/drivers/video/fbdev/core/fbcon_cw.c @@ -241,7 +241,7 @@ static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode, if (attribute) { u8 *dst; - dst = kmalloc(w * vc->vc_font.width, GFP_ATOMIC); + dst = kmalloc_array(w, vc->vc_font.width, GFP_ATOMIC); if (!dst) return; kfree(ops->cursor_data); @@ -287,14 +287,15 @@ static void cw_cursor(struct vc_data *vc, struct fb_info *info, int mode, vc->vc_cursor_type != ops->p->cursor_shape || ops->cursor_state.mask == NULL || ops->cursor_reset) { - char *tmp, *mask = kmalloc(w*vc->vc_font.width, GFP_ATOMIC); + char *tmp, *mask = kmalloc_array(w, vc->vc_font.width, + GFP_ATOMIC); int cur_height, size, i = 0; int width = (vc->vc_font.width + 7)/8; if (!mask) return; - tmp = kmalloc(width * vc->vc_font.height, GFP_ATOMIC); + tmp = kmalloc_array(width, vc->vc_font.height, GFP_ATOMIC); if (!tmp) { kfree(mask); diff --git a/drivers/video/fbdev/core/fbcon_rotate.c b/drivers/video/fbdev/core/fbcon_rotate.c index 8a51e4d95cc5..c0d445294aa7 100644 --- a/drivers/video/fbdev/core/fbcon_rotate.c +++ b/drivers/video/fbdev/core/fbcon_rotate.c @@ -46,7 +46,7 @@ static int fbcon_rotate_font(struct fb_info *info, struct vc_data *vc) info->fbops->fb_sync(info); if (ops->fd_size < d_cellsize * len) { - dst = kmalloc(d_cellsize * len, GFP_KERNEL); + dst = kmalloc_array(len, d_cellsize, GFP_KERNEL); if (dst == NULL) { err = -ENOMEM; diff --git a/drivers/video/fbdev/core/fbcon_ud.c b/drivers/video/fbdev/core/fbcon_ud.c index f98eee263597..1936afc78fec 100644 --- a/drivers/video/fbdev/core/fbcon_ud.c +++ b/drivers/video/fbdev/core/fbcon_ud.c @@ -289,7 +289,7 @@ static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode, if (attribute) { u8 *dst; - dst = kmalloc(w * vc->vc_font.height, GFP_ATOMIC); + dst = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC); if (!dst) return; kfree(ops->cursor_data); @@ -335,7 +335,7 @@ static void ud_cursor(struct vc_data *vc, struct fb_info *info, int mode, vc->vc_cursor_type != ops->p->cursor_shape || ops->cursor_state.mask == NULL || ops->cursor_reset) { - char *mask = kmalloc(w*vc->vc_font.height, GFP_ATOMIC); + char *mask = kmalloc_array(w, vc->vc_font.height, GFP_ATOMIC); int cur_height, size, i = 0; u8 msk = 0xff; diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 924d0730ffe2..609438d2465b 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -489,7 +489,8 @@ static int fb_show_logo_line(struct fb_info *info, int rotate, } if (fb_logo.depth <= 4) { - logo_new = kmalloc(logo->width * logo->height, GFP_KERNEL); + logo_new = kmalloc_array(logo->width, logo->height, + GFP_KERNEL); if (logo_new == NULL) { kfree(palette); if (saved_pseudo_palette) @@ -506,8 +507,8 @@ static int fb_show_logo_line(struct fb_info *info, int rotate, image.height = logo->height; if (rotate) { - logo_rotate = kmalloc(logo->width * - logo->height, GFP_KERNEL); + logo_rotate = kmalloc_array(logo->width, logo->height, + GFP_KERNEL); if (logo_rotate) fb_rotate_logo(info, logo_rotate, &image, rotate); } diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c index 2b2d67328514..522cf441842c 100644 --- a/drivers/video/fbdev/core/fbmon.c +++ b/drivers/video/fbdev/core/fbmon.c @@ -671,7 +671,7 @@ static struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize, } *dbsize = num; - m = kmalloc(num * sizeof(struct fb_videomode), GFP_KERNEL); + m = kmalloc_array(num, sizeof(struct fb_videomode), GFP_KERNEL); if (!m) return mode; memmove(m, mode, num * sizeof(struct fb_videomode)); diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c index ba82f97fb42b..c4eb8661f751 100644 --- a/drivers/video/fbdev/imxfb.c +++ b/drivers/video/fbdev/imxfb.c @@ -662,7 +662,7 @@ static int imxfb_init_fbinfo(struct platform_device *pdev) pr_debug("%s\n",__func__); - info->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL); + info->pseudo_palette = kmalloc_array(16, sizeof(u32), GFP_KERNEL); if (!info->pseudo_palette) return -ENOMEM; diff --git a/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c b/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c index fe92eed6da70..8dd296d257dd 100644 --- a/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c +++ b/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c @@ -245,7 +245,7 @@ static void mb86290fb_imageblit(struct fb_info *info, return; } - cmd = kmalloc(cmdlen * 4, GFP_DMA); + cmd = kmalloc_array(cmdlen, 4, GFP_DMA); if (!cmd) return cfb_imageblit(info, image); cmdfn(cmd, step, dx, dy, width, height, fgcolor, bgcolor, image, info); diff --git a/drivers/video/fbdev/nvidia/nvidia.c b/drivers/video/fbdev/nvidia/nvidia.c index 418a2d0d06a9..2e50120bcfae 100644 --- a/drivers/video/fbdev/nvidia/nvidia.c +++ b/drivers/video/fbdev/nvidia/nvidia.c @@ -566,7 +566,7 @@ static int nvidiafb_cursor(struct fb_info *info, struct fb_cursor *cursor) u8 *msk = (u8 *) cursor->mask; u8 *src; - src = kmalloc(s_pitch * cursor->image.height, GFP_ATOMIC); + src = kmalloc_array(s_pitch, cursor->image.height, GFP_ATOMIC); if (src) { switch (cursor->rop) { diff --git a/drivers/video/fbdev/pvr2fb.c b/drivers/video/fbdev/pvr2fb.c index a582d3ae7ac1..8a53d1de611d 100644 --- a/drivers/video/fbdev/pvr2fb.c +++ b/drivers/video/fbdev/pvr2fb.c @@ -682,7 +682,7 @@ static ssize_t pvr2fb_write(struct fb_info *info, const char *buf, nr_pages = (count + PAGE_SIZE - 1) >> PAGE_SHIFT; - pages = kmalloc(nr_pages * sizeof(struct page *), GFP_KERNEL); + pages = kmalloc_array(nr_pages, sizeof(struct page *), GFP_KERNEL); if (!pages) return -ENOMEM; diff --git a/drivers/video/fbdev/riva/fbdev.c b/drivers/video/fbdev/riva/fbdev.c index ff8282374f37..cc242ba057d3 100644 --- a/drivers/video/fbdev/riva/fbdev.c +++ b/drivers/video/fbdev/riva/fbdev.c @@ -1615,7 +1615,7 @@ static int rivafb_cursor(struct fb_info *info, struct fb_cursor *cursor) u8 *msk = (u8 *) cursor->mask; u8 *src; - src = kmalloc(s_pitch * cursor->image.height, GFP_ATOMIC); + src = kmalloc_array(s_pitch, cursor->image.height, GFP_ATOMIC); if (src) { switch (cursor->rop) { diff --git a/drivers/video/fbdev/via/viafbdev.c b/drivers/video/fbdev/via/viafbdev.c index 9b45125988fb..52f577b0669b 100644 --- a/drivers/video/fbdev/via/viafbdev.c +++ b/drivers/video/fbdev/via/viafbdev.c @@ -596,7 +596,8 @@ static int viafb_ioctl(struct fb_info *info, u_int cmd, u_long arg) break; case VIAFB_GET_GAMMA_LUT: - viafb_gamma_table = kmalloc(256 * sizeof(u32), GFP_KERNEL); + viafb_gamma_table = kmalloc_array(256, sizeof(u32), + GFP_KERNEL); if (!viafb_gamma_table) return -ENOMEM; viafb_get_gamma_table(viafb_gamma_table); diff --git a/drivers/video/fbdev/w100fb.c b/drivers/video/fbdev/w100fb.c index 035ff6e02894..696106ecdff0 100644 --- a/drivers/video/fbdev/w100fb.c +++ b/drivers/video/fbdev/w100fb.c @@ -693,7 +693,8 @@ int w100fb_probe(struct platform_device *pdev) goto out; } - info->pseudo_palette = kmalloc(sizeof (u32) * MAX_PALETTES, GFP_KERNEL); + info->pseudo_palette = kmalloc_array(MAX_PALETTES, sizeof(u32), + GFP_KERNEL); if (!info->pseudo_palette) { err = -ENOMEM; goto out; diff --git a/drivers/virt/vboxguest/vboxguest_core.c b/drivers/virt/vboxguest/vboxguest_core.c index 2f3856a95856..3093655c7b92 100644 --- a/drivers/virt/vboxguest/vboxguest_core.c +++ b/drivers/virt/vboxguest/vboxguest_core.c @@ -69,7 +69,7 @@ static void vbg_guest_mappings_init(struct vbg_dev *gdev) /* Add 4M so that we can align the vmap to 4MiB as the host requires. */ size = PAGE_ALIGN(req->hypervisor_size) + SZ_4M; - pages = kmalloc(sizeof(*pages) * (size >> PAGE_SHIFT), GFP_KERNEL); + pages = kmalloc_array(size >> PAGE_SHIFT, sizeof(*pages), GFP_KERNEL); if (!pages) goto out; @@ -262,8 +262,9 @@ static int vbg_balloon_inflate(struct vbg_dev *gdev, u32 chunk_idx) struct page **pages; int i, rc, ret; - pages = kmalloc(sizeof(*pages) * VMMDEV_MEMORY_BALLOON_CHUNK_PAGES, - GFP_KERNEL | __GFP_NOWARN); + pages = kmalloc_array(VMMDEV_MEMORY_BALLOON_CHUNK_PAGES, + sizeof(*pages), + GFP_KERNEL | __GFP_NOWARN); if (!pages) return -ENOMEM; diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index 48d4d1cf1cb6..a491d0ed3f16 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -113,8 +113,9 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, vp_dev->msix_vectors = nvectors; - vp_dev->msix_names = kmalloc(nvectors * sizeof *vp_dev->msix_names, - GFP_KERNEL); + vp_dev->msix_names = kmalloc_array(nvectors, + sizeof(*vp_dev->msix_names), + GFP_KERNEL); if (!vp_dev->msix_names) goto error; vp_dev->msix_affinity_masks diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 21d464a29cf8..814b395007b2 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -247,7 +247,7 @@ static struct vring_desc *alloc_indirect(struct virtqueue *_vq, */ gfp &= ~__GFP_HIGHMEM; - desc = kmalloc(total_sg * sizeof(struct vring_desc), gfp); + desc = kmalloc_array(total_sg, sizeof(struct vring_desc), gfp); if (!desc) return NULL; diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index 27be107d6480..2473b0a9e6e4 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -1137,7 +1137,7 @@ static int gnttab_map(unsigned int start_idx, unsigned int end_idx) /* No need for kzalloc as it is initialized in following hypercall * GNTTABOP_setup_table. */ - frames = kmalloc(nr_gframes * sizeof(unsigned long), GFP_ATOMIC); + frames = kmalloc_array(nr_gframes, sizeof(unsigned long), GFP_ATOMIC); if (!frames) return -ENOMEM; @@ -1300,8 +1300,9 @@ int gnttab_init(void) max_nr_glist_frames = (max_nr_grant_frames * gnttab_interface->grefs_per_grant_frame / RPP); - gnttab_list = kmalloc(max_nr_glist_frames * sizeof(grant_ref_t *), - GFP_KERNEL); + gnttab_list = kmalloc_array(max_nr_glist_frames, + sizeof(grant_ref_t *), + GFP_KERNEL); if (gnttab_list == NULL) return -ENOMEM; diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c index ee2c891b55c6..ea4a08b83fa0 100644 --- a/drivers/xen/xen-pciback/pciback_ops.c +++ b/drivers/xen/xen-pciback/pciback_ops.c @@ -234,7 +234,7 @@ int xen_pcibk_enable_msix(struct xen_pcibk_device *pdev, if (dev->msi_enabled || !(cmd & PCI_COMMAND_MEMORY)) return -ENXIO; - entries = kmalloc(op->value * sizeof(*entries), GFP_KERNEL); + entries = kmalloc_array(op->value, sizeof(*entries), GFP_KERNEL); if (entries == NULL) return -ENOMEM; diff --git a/fs/9p/fid.c b/fs/9p/fid.c index ed4f8519b627..a9ef46f02354 100644 --- a/fs/9p/fid.c +++ b/fs/9p/fid.c @@ -100,7 +100,7 @@ static int build_path_from_dentry(struct v9fs_session_info *v9ses, for (ds = dentry; !IS_ROOT(ds); ds = ds->d_parent) n++; - wnames = kmalloc(sizeof(char *) * n, GFP_KERNEL); + wnames = kmalloc_array(n, sizeof(char *), GFP_KERNEL); if (!wnames) goto err_out; diff --git a/fs/adfs/super.c b/fs/adfs/super.c index cfda2c7caedc..71fa525d63a0 100644 --- a/fs/adfs/super.c +++ b/fs/adfs/super.c @@ -313,7 +313,7 @@ static struct adfs_discmap *adfs_read_map(struct super_block *sb, struct adfs_di asb->s_ids_per_zone = zone_size / (asb->s_idlen + 1); - dm = kmalloc(nzones * sizeof(*dm), GFP_KERNEL); + dm = kmalloc_array(nzones, sizeof(*dm), GFP_KERNEL); if (dm == NULL) { adfs_error(sb, "not enough memory"); return ERR_PTR(-ENOMEM); diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c index c332c95a6940..238fd28cfdd2 100644 --- a/fs/afs/cmservice.c +++ b/fs/afs/cmservice.c @@ -191,7 +191,8 @@ static int afs_deliver_cb_callback(struct afs_call *call) if (call->count > AFSCBMAX) return afs_protocol_error(call, -EBADMSG); - call->buffer = kmalloc(call->count * 3 * 4, GFP_KERNEL); + call->buffer = kmalloc(array3_size(call->count, 3, 4), + GFP_KERNEL); if (!call->buffer) return -ENOMEM; call->offset = 0; @@ -330,7 +331,7 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call) switch (call->unmarshall) { case 0: call->offset = 0; - call->buffer = kmalloc(11 * sizeof(__be32), GFP_KERNEL); + call->buffer = kmalloc_array(11, sizeof(__be32), GFP_KERNEL); if (!call->buffer) return -ENOMEM; call->unmarshall++; @@ -453,7 +454,7 @@ static int afs_deliver_cb_probe_uuid(struct afs_call *call) switch (call->unmarshall) { case 0: call->offset = 0; - call->buffer = kmalloc(11 * sizeof(__be32), GFP_KERNEL); + call->buffer = kmalloc_array(11, sizeof(__be32), GFP_KERNEL); if (!call->buffer) return -ENOMEM; call->unmarshall++; diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 4ad6f669fe34..bf5ee6f741cd 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -2010,7 +2010,7 @@ static int elf_note_info_init(struct elf_note_info *info) INIT_LIST_HEAD(&info->thread_list); /* Allocate space for ELF notes */ - info->notes = kmalloc(8 * sizeof(struct memelfnote), GFP_KERNEL); + info->notes = kmalloc_array(8, sizeof(struct memelfnote), GFP_KERNEL); if (!info->notes) return 0; info->psinfo = kmalloc(sizeof(*info->psinfo), GFP_KERNEL); diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c index d90993adeffa..b53bb3729ac1 100644 --- a/fs/binfmt_elf_fdpic.c +++ b/fs/binfmt_elf_fdpic.c @@ -1600,7 +1600,8 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm) psinfo = kmalloc(sizeof(*psinfo), GFP_KERNEL); if (!psinfo) goto cleanup; - notes = kmalloc(NUM_NOTES * sizeof(struct memelfnote), GFP_KERNEL); + notes = kmalloc_array(NUM_NOTES, sizeof(struct memelfnote), + GFP_KERNEL); if (!notes) goto cleanup; fpu = kmalloc(sizeof(*fpu), GFP_KERNEL); diff --git a/fs/block_dev.c b/fs/block_dev.c index 05e12aea2404..0dd87aaeb39a 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -205,7 +205,8 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter, if (nr_pages <= DIO_INLINE_BIO_VECS) vecs = inline_vecs; else { - vecs = kmalloc(nr_pages * sizeof(struct bio_vec), GFP_KERNEL); + vecs = kmalloc_array(nr_pages, sizeof(struct bio_vec), + GFP_KERNEL); if (!vecs) return -ENOMEM; } diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 5f7ad3d0df2e..c9cb2f33a6d6 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -370,7 +370,7 @@ static int start_read(struct inode *inode, struct ceph_rw_context *rw_ctx, /* build page vector */ nr_pages = calc_pages_for(0, len); - pages = kmalloc(sizeof(*pages) * nr_pages, GFP_KERNEL); + pages = kmalloc_array(nr_pages, sizeof(*pages), GFP_KERNEL); if (!pages) { ret = -ENOMEM; goto out_put; @@ -966,8 +966,9 @@ get_more_pages: BUG_ON(pages); max_pages = calc_pages_for(0, (u64)len); - pages = kmalloc(max_pages * sizeof (*pages), - GFP_NOFS); + pages = kmalloc_array(max_pages, + sizeof(*pages), + GFP_NOFS); if (!pages) { pool = fsc->wb_pagevec_pool; pages = mempool_alloc(pool, GFP_NOFS); @@ -1113,8 +1114,8 @@ new_request: /* allocate new pages array for next request */ data_pages = pages; - pages = kmalloc(locked_pages * sizeof (*pages), - GFP_NOFS); + pages = kmalloc_array(locked_pages, sizeof(*pages), + GFP_NOFS); if (!pages) { pool = fsc->wb_pagevec_pool; pages = mempool_alloc(pool, GFP_NOFS); diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 5ece2e6ad154..cf8d24812cc0 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2992,8 +2992,9 @@ encode_again: num_flock_locks = 0; } if (num_fcntl_locks + num_flock_locks > 0) { - flocks = kmalloc((num_fcntl_locks + num_flock_locks) * - sizeof(struct ceph_filelock), GFP_NOFS); + flocks = kmalloc_array(num_fcntl_locks + num_flock_locks, + sizeof(struct ceph_filelock), + GFP_NOFS); if (!flocks) { err = -ENOMEM; goto out_free; diff --git a/fs/cifs/asn1.c b/fs/cifs/asn1.c index a3b56544c21b..3d19595eb352 100644 --- a/fs/cifs/asn1.c +++ b/fs/cifs/asn1.c @@ -428,7 +428,7 @@ asn1_oid_decode(struct asn1_ctx *ctx, if (size < 2 || size > UINT_MAX/sizeof(unsigned long)) return 0; - *oid = kmalloc(size * sizeof(unsigned long), GFP_ATOMIC); + *oid = kmalloc_array(size, sizeof(unsigned long), GFP_ATOMIC); if (*oid == NULL) return 0; diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c index 13a8a77322c9..1d377b7f2860 100644 --- a/fs/cifs/cifsacl.c +++ b/fs/cifs/cifsacl.c @@ -747,8 +747,8 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl, if (num_aces > ULONG_MAX / sizeof(struct cifs_ace *)) return; - ppace = kmalloc(num_aces * sizeof(struct cifs_ace *), - GFP_KERNEL); + ppace = kmalloc_array(num_aces, sizeof(struct cifs_ace *), + GFP_KERNEL); if (!ppace) return; diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 745fd7fe8d0e..a94071c7b408 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1792,7 +1792,7 @@ cifs_rename2(struct inode *source_dir, struct dentry *source_dentry, * with unix extensions enabled. */ info_buf_source = - kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), + kmalloc_array(2, sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); if (info_buf_source == NULL) { rc = -ENOMEM; diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 48e2004c75fb..af032e1a3eac 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -3471,7 +3471,7 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon, if (!num) return -EINVAL; - iov = kmalloc(sizeof(struct kvec) * num, GFP_KERNEL); + iov = kmalloc_array(num, sizeof(struct kvec), GFP_KERNEL); if (!iov) return -ENOMEM; @@ -3535,7 +3535,7 @@ SMB2_rename(const unsigned int xid, struct cifs_tcon *tcon, int rc; int len = (2 * UniStrnlen((wchar_t *)target_file, PATH_MAX)); - data = kmalloc(sizeof(void *) * 2, GFP_KERNEL); + data = kmalloc_array(2, sizeof(void *), GFP_KERNEL); if (!data) return -ENOMEM; @@ -3583,7 +3583,7 @@ SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon, int rc; int len = (2 * UniStrnlen((wchar_t *)target_file, PATH_MAX)); - data = kmalloc(sizeof(void *) * 2, GFP_KERNEL); + data = kmalloc_array(2, sizeof(void *), GFP_KERNEL); if (!data) return -ENOMEM; diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index 24887a0898c0..1f1a68f89110 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -844,8 +844,8 @@ SendReceive2(const unsigned int xid, struct cifs_ses *ses, int rc; if (n_vec + 1 > CIFS_MAX_IOV_SIZE) { - new_iov = kmalloc(sizeof(struct kvec) * (n_vec + 1), - GFP_KERNEL); + new_iov = kmalloc_array(n_vec + 1, sizeof(struct kvec), + GFP_KERNEL); if (!new_iov) { /* otherwise cifs_send_recv below sets resp_buf_type */ *resp_buf_type = CIFS_NO_BUFFER; @@ -886,8 +886,8 @@ smb2_send_recv(const unsigned int xid, struct cifs_ses *ses, __be32 rfc1002_marker; if (n_vec + 1 > CIFS_MAX_IOV_SIZE) { - new_iov = kmalloc(sizeof(struct kvec) * (n_vec + 1), - GFP_KERNEL); + new_iov = kmalloc_array(n_vec + 1, sizeof(struct kvec), + GFP_KERNEL); if (!new_iov) return -ENOMEM; } else diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c index 0ac62811b341..5f81fcd383a4 100644 --- a/fs/exofs/inode.c +++ b/fs/exofs/inode.c @@ -110,8 +110,8 @@ static int pcol_try_alloc(struct page_collect *pcol) pages = exofs_max_io_pages(&pcol->sbi->layout, pcol->expected_pages); for (; pages; pages >>= 1) { - pcol->pages = kmalloc(pages * sizeof(struct page *), - GFP_KERNEL); + pcol->pages = kmalloc_array(pages, sizeof(struct page *), + GFP_KERNEL); if (likely(pcol->pages)) { pcol->alloc_pages = pages; return 0; diff --git a/fs/ext2/super.c b/fs/ext2/super.c index c09289a42dc5..25ab1274090f 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1082,7 +1082,9 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent) / EXT2_BLOCKS_PER_GROUP(sb)) + 1; db_count = (sbi->s_groups_count + EXT2_DESC_PER_BLOCK(sb) - 1) / EXT2_DESC_PER_BLOCK(sb); - sbi->s_group_desc = kmalloc (db_count * sizeof (struct buffer_head *), GFP_KERNEL); + sbi->s_group_desc = kmalloc_array (db_count, + sizeof(struct buffer_head *), + GFP_KERNEL); if (sbi->s_group_desc == NULL) { ext2_msg(sb, KERN_ERR, "error: not enough memory"); goto failed_mount; diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index d792b7689d92..e5fb38451a73 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -204,12 +204,14 @@ static struct ext4_new_flex_group_data *alloc_flex_gd(unsigned long flexbg_size) goto out2; flex_gd->count = flexbg_size; - flex_gd->groups = kmalloc(sizeof(struct ext4_new_group_data) * - flexbg_size, GFP_NOFS); + flex_gd->groups = kmalloc_array(flexbg_size, + sizeof(struct ext4_new_group_data), + GFP_NOFS); if (flex_gd->groups == NULL) goto out2; - flex_gd->bg_flags = kmalloc(flexbg_size * sizeof(__u16), GFP_NOFS); + flex_gd->bg_flags = kmalloc_array(flexbg_size, sizeof(__u16), + GFP_NOFS); if (flex_gd->bg_flags == NULL) goto out1; @@ -969,7 +971,7 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode, int res, i; int err; - primary = kmalloc(reserved_gdb * sizeof(*primary), GFP_NOFS); + primary = kmalloc_array(reserved_gdb, sizeof(*primary), GFP_NOFS); if (!primary) return -ENOMEM; diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index 4f4362d5a04c..d4e23f8ddcf6 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -664,7 +664,7 @@ static int vfat_add_entry(struct inode *dir, const struct qstr *qname, if (len == 0) return -ENOENT; - slots = kmalloc(sizeof(*slots) * MSDOS_SLOTS, GFP_NOFS); + slots = kmalloc_array(MSDOS_SLOTS, sizeof(*slots), GFP_NOFS); if (slots == NULL) return -ENOMEM; diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index e03ca14f40e9..c6b88fa85e2e 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -64,9 +64,12 @@ static struct fuse_req *__fuse_request_alloc(unsigned npages, gfp_t flags) pages = req->inline_pages; page_descs = req->inline_page_descs; } else { - pages = kmalloc(sizeof(struct page *) * npages, flags); - page_descs = kmalloc(sizeof(struct fuse_page_desc) * - npages, flags); + pages = kmalloc_array(npages, sizeof(struct page *), + flags); + page_descs = + kmalloc_array(npages, + sizeof(struct fuse_page_desc), + flags); } if (!pages || !page_descs) { @@ -1359,7 +1362,8 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos, if (!fud) return -EPERM; - bufs = kmalloc(pipe->buffers * sizeof(struct pipe_buffer), GFP_KERNEL); + bufs = kmalloc_array(pipe->buffers, sizeof(struct pipe_buffer), + GFP_KERNEL); if (!bufs) return -ENOMEM; @@ -1940,7 +1944,8 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe, if (!fud) return -EPERM; - bufs = kmalloc(pipe->buffers * sizeof(struct pipe_buffer), GFP_KERNEL); + bufs = kmalloc_array(pipe->buffers, sizeof(struct pipe_buffer), + GFP_KERNEL); if (!bufs) return -ENOMEM; diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c index d9fb0ad6cc30..3090c445e8fc 100644 --- a/fs/gfs2/dir.c +++ b/fs/gfs2/dir.c @@ -1055,7 +1055,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name) /* Change the pointers. Don't bother distinguishing stuffed from non-stuffed. This code is complicated enough already. */ - lp = kmalloc(half_len * sizeof(__be64), GFP_NOFS); + lp = kmalloc_array(half_len, sizeof(__be64), GFP_NOFS); if (!lp) { error = -ENOMEM; goto fail_brelse; @@ -1169,7 +1169,7 @@ static int dir_double_exhash(struct gfs2_inode *dip) if (IS_ERR(hc)) return PTR_ERR(hc); - hc2 = kmalloc(hsize_bytes * 2, GFP_NOFS | __GFP_NOWARN); + hc2 = kmalloc_array(hsize_bytes, 2, GFP_NOFS | __GFP_NOWARN); if (hc2 == NULL) hc2 = __vmalloc(hsize_bytes * 2, GFP_NOFS, PAGE_KERNEL); @@ -1596,7 +1596,7 @@ int gfs2_dir_read(struct inode *inode, struct dir_context *ctx, error = -ENOMEM; /* 96 is max number of dirents which can be stuffed into an inode */ - darr = kmalloc(96 * sizeof(struct gfs2_dirent *), GFP_NOFS); + darr = kmalloc_array(96, sizeof(struct gfs2_dirent *), GFP_NOFS); if (darr) { g.pdent = (const struct gfs2_dirent **)darr; g.offset = 0; diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 097bd3c0f270..4614ee25f621 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -1303,7 +1303,8 @@ int gfs2_glock_nq_m(unsigned int num_gh, struct gfs2_holder *ghs) default: if (num_gh <= 4) break; - pph = kmalloc(num_gh * sizeof(struct gfs2_holder *), GFP_NOFS); + pph = kmalloc_array(num_gh, sizeof(struct gfs2_holder *), + GFP_NOFS); if (!pph) return -ENOMEM; } diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index e8585dfd209f..0efae7a0ee80 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -886,7 +886,7 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda) gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota), &data_blocks, &ind_blocks); - ghs = kmalloc(num_qd * sizeof(struct gfs2_holder), GFP_NOFS); + ghs = kmalloc_array(num_qd, sizeof(struct gfs2_holder), GFP_NOFS); if (!ghs) return -ENOMEM; diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 6bc5cfe710d1..33abcf29bc05 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -2605,8 +2605,9 @@ void gfs2_rlist_alloc(struct gfs2_rgrp_list *rlist, unsigned int state) { unsigned int x; - rlist->rl_ghs = kmalloc(rlist->rl_rgrps * sizeof(struct gfs2_holder), - GFP_NOFS | __GFP_NOFAIL); + rlist->rl_ghs = kmalloc_array(rlist->rl_rgrps, + sizeof(struct gfs2_holder), + GFP_NOFS | __GFP_NOFAIL); for (x = 0; x < rlist->rl_rgrps; x++) gfs2_holder_init(rlist->rl_rgd[x]->rd_gl, state, 0, diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index cf5c7f3080d2..af0d5b01cf0b 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1097,7 +1097,7 @@ static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host int error = 0, err; memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); - gha = kmalloc(slots * sizeof(struct gfs2_holder), GFP_KERNEL); + gha = kmalloc_array(slots, sizeof(struct gfs2_holder), GFP_KERNEL); if (!gha) return -ENOMEM; for (x = 0; x < slots; x++) diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c index a4ad18afbdec..4ada525c5c43 100644 --- a/fs/hpfs/dnode.c +++ b/fs/hpfs/dnode.c @@ -33,7 +33,8 @@ int hpfs_add_pos(struct inode *inode, loff_t *pos) if (hpfs_inode->i_rddir_off[i] == pos) return 0; if (!(i&0x0f)) { - if (!(ppos = kmalloc((i+0x11) * sizeof(loff_t*), GFP_NOFS))) { + ppos = kmalloc_array(i + 0x11, sizeof(loff_t *), GFP_NOFS); + if (!ppos) { pr_err("out of memory for position list\n"); return -ENOMEM; } diff --git a/fs/hpfs/map.c b/fs/hpfs/map.c index 7c49f1ef0c85..ecd9fccd1663 100644 --- a/fs/hpfs/map.c +++ b/fs/hpfs/map.c @@ -115,7 +115,7 @@ __le32 *hpfs_load_bitmap_directory(struct super_block *s, secno bmp) int n = (hpfs_sb(s)->sb_fs_size + 0x200000 - 1) >> 21; int i; __le32 *b; - if (!(b = kmalloc(n * 512, GFP_KERNEL))) { + if (!(b = kmalloc_array(n, 512, GFP_KERNEL))) { pr_err("can't allocate memory for bitmap directory\n"); return NULL; } diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c index 240779e4689c..a1143e57a718 100644 --- a/fs/jbd2/revoke.c +++ b/fs/jbd2/revoke.c @@ -223,7 +223,7 @@ static struct jbd2_revoke_table_s *jbd2_journal_init_revoke_table(int hash_size) table->hash_size = hash_size; table->hash_shift = shift; table->hash_table = - kmalloc(hash_size * sizeof(struct list_head), GFP_KERNEL); + kmalloc_array(hash_size, sizeof(struct list_head), GFP_KERNEL); if (!table->hash_table) { kmem_cache_free(jbd2_revoke_table_cache, table); table = NULL; diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c index 2cfe487708e0..c6821a509481 100644 --- a/fs/jffs2/wbuf.c +++ b/fs/jffs2/wbuf.c @@ -1208,7 +1208,7 @@ int jffs2_nand_flash_setup(struct jffs2_sb_info *c) if (!c->wbuf) return -ENOMEM; - c->oobbuf = kmalloc(NR_OOB_SCAN_PAGES * c->oobavail, GFP_KERNEL); + c->oobbuf = kmalloc_array(NR_OOB_SCAN_PAGES, c->oobavail, GFP_KERNEL); if (!c->oobbuf) { kfree(c->wbuf); return -ENOMEM; diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c index 2d514c7affc2..49263e220dbc 100644 --- a/fs/jfs/jfs_dmap.c +++ b/fs/jfs/jfs_dmap.c @@ -1641,7 +1641,7 @@ s64 dbDiscardAG(struct inode *ip, int agno, s64 minlen) max_ranges = nblocks; do_div(max_ranges, minlen); range_cnt = min_t(u64, max_ranges + 1, 32 * 1024); - totrim = kmalloc(sizeof(struct range2trim) * range_cnt, GFP_NOFS); + totrim = kmalloc_array(range_cnt, sizeof(struct range2trim), GFP_NOFS); if (totrim == NULL) { jfs_error(bmp->db_ipbmap->i_sb, "no memory for trim array\n"); IWRITE_UNLOCK(ipbmap); diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c index de2bcb36e079..52bae3f5c914 100644 --- a/fs/jfs/jfs_dtree.c +++ b/fs/jfs/jfs_dtree.c @@ -594,7 +594,8 @@ int dtSearch(struct inode *ip, struct component_name * key, ino_t * data, struct component_name ciKey; struct super_block *sb = ip->i_sb; - ciKey.name = kmalloc((JFS_NAME_MAX + 1) * sizeof(wchar_t), GFP_NOFS); + ciKey.name = kmalloc_array(JFS_NAME_MAX + 1, sizeof(wchar_t), + GFP_NOFS); if (!ciKey.name) { rc = -ENOMEM; goto dtSearch_Exit2; @@ -957,7 +958,7 @@ static int dtSplitUp(tid_t tid, smp = split->mp; sp = DT_PAGE(ip, smp); - key.name = kmalloc((JFS_NAME_MAX + 2) * sizeof(wchar_t), GFP_NOFS); + key.name = kmalloc_array(JFS_NAME_MAX + 2, sizeof(wchar_t), GFP_NOFS); if (!key.name) { DT_PUTPAGE(smp); rc = -ENOMEM; @@ -3779,12 +3780,12 @@ static int ciGetLeafPrefixKey(dtpage_t * lp, int li, dtpage_t * rp, struct component_name lkey; struct component_name rkey; - lkey.name = kmalloc((JFS_NAME_MAX + 1) * sizeof(wchar_t), + lkey.name = kmalloc_array(JFS_NAME_MAX + 1, sizeof(wchar_t), GFP_KERNEL); if (lkey.name == NULL) return -ENOMEM; - rkey.name = kmalloc((JFS_NAME_MAX + 1) * sizeof(wchar_t), + rkey.name = kmalloc_array(JFS_NAME_MAX + 1, sizeof(wchar_t), GFP_KERNEL); if (rkey.name == NULL) { kfree(lkey.name); diff --git a/fs/jfs/jfs_unicode.c b/fs/jfs/jfs_unicode.c index c7de6f5bbefc..0148e2e4d97a 100644 --- a/fs/jfs/jfs_unicode.c +++ b/fs/jfs/jfs_unicode.c @@ -121,7 +121,7 @@ int get_UCSname(struct component_name * uniName, struct dentry *dentry) return -ENAMETOOLONG; uniName->name = - kmalloc((length + 1) * sizeof(wchar_t), GFP_NOFS); + kmalloc_array(length + 1, sizeof(wchar_t), GFP_NOFS); if (uniName->name == NULL) return -ENOMEM; diff --git a/fs/mbcache.c b/fs/mbcache.c index bf41e2e72c18..081ccf0caee3 100644 --- a/fs/mbcache.c +++ b/fs/mbcache.c @@ -353,8 +353,9 @@ struct mb_cache *mb_cache_create(int bucket_bits) cache->c_max_entries = bucket_count << 4; INIT_LIST_HEAD(&cache->c_list); spin_lock_init(&cache->c_list_lock); - cache->c_hash = kmalloc(bucket_count * sizeof(struct hlist_bl_head), - GFP_KERNEL); + cache->c_hash = kmalloc_array(bucket_count, + sizeof(struct hlist_bl_head), + GFP_KERNEL); if (!cache->c_hash) { kfree(cache); goto err_out; diff --git a/fs/namei.c b/fs/namei.c index 6df1f61855d6..2490ddb8bc90 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -537,12 +537,12 @@ static int __nd_alloc_stack(struct nameidata *nd) struct saved *p; if (nd->flags & LOOKUP_RCU) { - p= kmalloc(MAXSYMLINKS * sizeof(struct saved), + p= kmalloc_array(MAXSYMLINKS, sizeof(struct saved), GFP_ATOMIC); if (unlikely(!p)) return -ECHILD; } else { - p= kmalloc(MAXSYMLINKS * sizeof(struct saved), + p= kmalloc_array(MAXSYMLINKS, sizeof(struct saved), GFP_KERNEL); if (unlikely(!p)) return -ENOMEM; diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index 66eaeb1e8c2c..9c247fa1e959 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -510,8 +510,9 @@ nfs4_legacy_state_init(struct net *net) struct nfsd_net *nn = net_generic(net, nfsd_net_id); int i; - nn->reclaim_str_hashtbl = kmalloc(sizeof(struct list_head) * - CLIENT_HASH_SIZE, GFP_KERNEL); + nn->reclaim_str_hashtbl = kmalloc_array(CLIENT_HASH_SIZE, + sizeof(struct list_head), + GFP_KERNEL); if (!nn->reclaim_str_hashtbl) return -ENOMEM; diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index fc74d6f46bd5..39370a503a63 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1807,8 +1807,9 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name) clp->cl_name.data = kmemdup(name.data, name.len, GFP_KERNEL); if (clp->cl_name.data == NULL) goto err_no_name; - clp->cl_ownerstr_hashtbl = kmalloc(sizeof(struct list_head) * - OWNER_HASH_SIZE, GFP_KERNEL); + clp->cl_ownerstr_hashtbl = kmalloc_array(OWNER_HASH_SIZE, + sizeof(struct list_head), + GFP_KERNEL); if (!clp->cl_ownerstr_hashtbl) goto err_no_hashtbl; for (i = 0; i < OWNER_HASH_SIZE; i++) @@ -7093,16 +7094,19 @@ static int nfs4_state_create_net(struct net *net) struct nfsd_net *nn = net_generic(net, nfsd_net_id); int i; - nn->conf_id_hashtbl = kmalloc(sizeof(struct list_head) * - CLIENT_HASH_SIZE, GFP_KERNEL); + nn->conf_id_hashtbl = kmalloc_array(CLIENT_HASH_SIZE, + sizeof(struct list_head), + GFP_KERNEL); if (!nn->conf_id_hashtbl) goto err; - nn->unconf_id_hashtbl = kmalloc(sizeof(struct list_head) * - CLIENT_HASH_SIZE, GFP_KERNEL); + nn->unconf_id_hashtbl = kmalloc_array(CLIENT_HASH_SIZE, + sizeof(struct list_head), + GFP_KERNEL); if (!nn->unconf_id_hashtbl) goto err_unconf_id; - nn->sessionid_hashtbl = kmalloc(sizeof(struct list_head) * - SESSION_HASH_SIZE, GFP_KERNEL); + nn->sessionid_hashtbl = kmalloc_array(SESSION_HASH_SIZE, + sizeof(struct list_head), + GFP_KERNEL); if (!nn->sessionid_hashtbl) goto err_sessionid; diff --git a/fs/ntfs/compress.c b/fs/ntfs/compress.c index f8eb04387ca4..fbd0090d7d0c 100644 --- a/fs/ntfs/compress.c +++ b/fs/ntfs/compress.c @@ -527,7 +527,7 @@ int ntfs_read_compressed_block(struct page *page) BUG_ON(ni->type != AT_DATA); BUG_ON(ni->name_len); - pages = kmalloc(nr_pages * sizeof(struct page *), GFP_NOFS); + pages = kmalloc_array(nr_pages, sizeof(struct page *), GFP_NOFS); /* Allocate memory to store the buffer heads we need. */ bhs_size = cb_size / block_size * sizeof(struct buffer_head *); diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index e5076185cc1e..1296f78ae966 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -1078,7 +1078,7 @@ int o2net_send_message_vec(u32 msg_type, u32 key, struct kvec *caller_vec, o2net_set_nst_sock_container(&nst, sc); veclen = caller_veclen + 1; - vec = kmalloc(sizeof(struct kvec) * veclen, GFP_ATOMIC); + vec = kmalloc_array(veclen, sizeof(struct kvec), GFP_ATOMIC); if (vec == NULL) { mlog(0, "failed to %zu element kvec!\n", veclen); ret = -ENOMEM; diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c index 425081be6161..2acd58ba9b7b 100644 --- a/fs/ocfs2/dlm/dlmdomain.c +++ b/fs/ocfs2/dlm/dlmdomain.c @@ -86,7 +86,7 @@ static void dlm_free_pagevec(void **vec, int pages) static void **dlm_alloc_pagevec(int pages) { - void **vec = kmalloc(pages * sizeof(void *), GFP_KERNEL); + void **vec = kmalloc_array(pages, sizeof(void *), GFP_KERNEL); int i; if (!vec) diff --git a/fs/proc/base.c b/fs/proc/base.c index 4aa9ce5df02f..80aa42506b8b 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -389,7 +389,8 @@ static int proc_pid_stack(struct seq_file *m, struct pid_namespace *ns, unsigned long *entries; int err; - entries = kmalloc(MAX_STACK_TRACE_DEPTH * sizeof(*entries), GFP_KERNEL); + entries = kmalloc_array(MAX_STACK_TRACE_DEPTH, sizeof(*entries), + GFP_KERNEL); if (!entries) return -ENOMEM; diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 597969db9e90..e9679016271f 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1473,7 +1473,7 @@ static ssize_t pagemap_read(struct file *file, char __user *buf, pm.show_pfn = file_ns_capable(file, &init_user_ns, CAP_SYS_ADMIN); pm.len = (PAGEMAP_WALK_SIZE >> PAGE_SHIFT); - pm.buffer = kmalloc(pm.len * PM_ENTRY_BYTES, GFP_KERNEL); + pm.buffer = kmalloc_array(pm.len, PM_ENTRY_BYTES, GFP_KERNEL); ret = -ENOMEM; if (!pm.buffer) goto out_mm; diff --git a/fs/read_write.c b/fs/read_write.c index e83bd9744b5d..153f8f690490 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -778,7 +778,7 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, goto out; } if (nr_segs > fast_segs) { - iov = kmalloc(nr_segs*sizeof(struct iovec), GFP_KERNEL); + iov = kmalloc_array(nr_segs, sizeof(struct iovec), GFP_KERNEL); if (iov == NULL) { ret = -ENOMEM; goto out; @@ -849,7 +849,7 @@ ssize_t compat_rw_copy_check_uvector(int type, goto out; if (nr_segs > fast_segs) { ret = -ENOMEM; - iov = kmalloc(nr_segs*sizeof(struct iovec), GFP_KERNEL); + iov = kmalloc_array(nr_segs, sizeof(struct iovec), GFP_KERNEL); if (iov == NULL) goto out; } diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 23148c3ed675..358ee2a1ce1a 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -2192,10 +2192,12 @@ static int journal_read_transaction(struct super_block *sb, * now we know we've got a good transaction, and it was * inside the valid time ranges */ - log_blocks = kmalloc(get_desc_trans_len(desc) * - sizeof(struct buffer_head *), GFP_NOFS); - real_blocks = kmalloc(get_desc_trans_len(desc) * - sizeof(struct buffer_head *), GFP_NOFS); + log_blocks = kmalloc_array(get_desc_trans_len(desc), + sizeof(struct buffer_head *), + GFP_NOFS); + real_blocks = kmalloc_array(get_desc_trans_len(desc), + sizeof(struct buffer_head *), + GFP_NOFS); if (!log_blocks || !real_blocks) { brelse(c_bh); brelse(d_bh); diff --git a/fs/select.c b/fs/select.c index bc3cc0f98896..317891ff8165 100644 --- a/fs/select.c +++ b/fs/select.c @@ -1236,7 +1236,7 @@ static int compat_core_sys_select(int n, compat_ulong_t __user *inp, size = FDS_BYTES(n); bits = stack_fds; if (size > sizeof(stack_fds) / 6) { - bits = kmalloc(6 * size, GFP_KERNEL); + bits = kmalloc_array(6, size, GFP_KERNEL); ret = -ENOMEM; if (!bits) goto out_nofds; diff --git a/fs/splice.c b/fs/splice.c index 005d09cf3fa8..2365ab073a27 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -259,8 +259,9 @@ int splice_grow_spd(const struct pipe_inode_info *pipe, struct splice_pipe_desc if (buffers <= PIPE_DEF_BUFFERS) return 0; - spd->pages = kmalloc(buffers * sizeof(struct page *), GFP_KERNEL); - spd->partial = kmalloc(buffers * sizeof(struct partial_page), GFP_KERNEL); + spd->pages = kmalloc_array(buffers, sizeof(struct page *), GFP_KERNEL); + spd->partial = kmalloc_array(buffers, sizeof(struct partial_page), + GFP_KERNEL); if (spd->pages && spd->partial) return 0; @@ -395,7 +396,7 @@ static ssize_t default_file_splice_read(struct file *in, loff_t *ppos, vec = __vec; if (nr_pages > PIPE_DEF_BUFFERS) { - vec = kmalloc(nr_pages * sizeof(struct kvec), GFP_KERNEL); + vec = kmalloc_array(nr_pages, sizeof(struct kvec), GFP_KERNEL); if (unlikely(!vec)) { res = -ENOMEM; goto out; diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c index 9a517109da0f..d4e45adddf1e 100644 --- a/fs/ubifs/lpt.c +++ b/fs/ubifs/lpt.c @@ -628,7 +628,7 @@ int ubifs_create_dflt_lpt(struct ubifs_info *c, int *main_lebs, int lpt_first, /* Needed by 'ubifs_pack_lsave()' */ c->main_first = c->leb_cnt - *main_lebs; - lsave = kmalloc(sizeof(int) * c->lsave_cnt, GFP_KERNEL); + lsave = kmalloc_array(c->lsave_cnt, sizeof(int), GFP_KERNEL); pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_KERNEL); nnode = kzalloc(sizeof(struct ubifs_nnode), GFP_KERNEL); buf = vmalloc(c->leb_size); @@ -1636,15 +1636,17 @@ static int lpt_init_rd(struct ubifs_info *c) return -ENOMEM; for (i = 0; i < LPROPS_HEAP_CNT; i++) { - c->lpt_heap[i].arr = kmalloc(sizeof(void *) * LPT_HEAP_SZ, - GFP_KERNEL); + c->lpt_heap[i].arr = kmalloc_array(LPT_HEAP_SZ, + sizeof(void *), + GFP_KERNEL); if (!c->lpt_heap[i].arr) return -ENOMEM; c->lpt_heap[i].cnt = 0; c->lpt_heap[i].max_cnt = LPT_HEAP_SZ; } - c->dirty_idx.arr = kmalloc(sizeof(void *) * LPT_HEAP_SZ, GFP_KERNEL); + c->dirty_idx.arr = kmalloc_array(LPT_HEAP_SZ, sizeof(void *), + GFP_KERNEL); if (!c->dirty_idx.arr) return -ENOMEM; c->dirty_idx.cnt = 0; @@ -1697,7 +1699,7 @@ static int lpt_init_wr(struct ubifs_info *c) return -ENOMEM; if (c->big_lpt) { - c->lsave = kmalloc(sizeof(int) * c->lsave_cnt, GFP_NOFS); + c->lsave = kmalloc_array(c->lsave_cnt, sizeof(int), GFP_NOFS); if (!c->lsave) return -ENOMEM; err = read_lsave(c); @@ -1939,8 +1941,8 @@ int ubifs_lpt_scan_nolock(struct ubifs_info *c, int start_lnum, int end_lnum, return err; } - path = kmalloc(sizeof(struct lpt_scan_node) * (c->lpt_hght + 1), - GFP_NOFS); + path = kmalloc_array(c->lpt_hght + 1, sizeof(struct lpt_scan_node), + GFP_NOFS); if (!path) return -ENOMEM; diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 6c397a389105..c5466c70d620 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -1196,7 +1196,8 @@ static int mount_ubifs(struct ubifs_info *c) * never exceed 64. */ err = -ENOMEM; - c->bottom_up_buf = kmalloc(BOTTOM_UP_HEIGHT * sizeof(int), GFP_KERNEL); + c->bottom_up_buf = kmalloc_array(BOTTOM_UP_HEIGHT, sizeof(int), + GFP_KERNEL); if (!c->bottom_up_buf) goto out_free; diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c index ba3d0e0f8615..4a21e7f75e7a 100644 --- a/fs/ubifs/tnc.c +++ b/fs/ubifs/tnc.c @@ -1104,8 +1104,9 @@ static struct ubifs_znode *dirty_cow_bottom_up(struct ubifs_info *c, ubifs_assert(znode); if (c->zroot.znode->level > BOTTOM_UP_HEIGHT) { kfree(c->bottom_up_buf); - c->bottom_up_buf = kmalloc(c->zroot.znode->level * sizeof(int), - GFP_NOFS); + c->bottom_up_buf = kmalloc_array(c->zroot.znode->level, + sizeof(int), + GFP_NOFS); if (!c->bottom_up_buf) return ERR_PTR(-ENOMEM); path = c->bottom_up_buf; diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c index aa31f60220ef..a9df94ad46a3 100644 --- a/fs/ubifs/tnc_commit.c +++ b/fs/ubifs/tnc_commit.c @@ -366,7 +366,8 @@ static int layout_in_gaps(struct ubifs_info *c, int cnt) dbg_gc("%d znodes to write", cnt); - c->gap_lebs = kmalloc(sizeof(int) * (c->lst.idx_lebs + 1), GFP_NOFS); + c->gap_lebs = kmalloc_array(c->lst.idx_lebs + 1, sizeof(int), + GFP_NOFS); if (!c->gap_lebs) return -ENOMEM; @@ -674,7 +675,7 @@ static int alloc_idx_lebs(struct ubifs_info *c, int cnt) dbg_cmt("need about %d empty LEBS for TNC commit", leb_cnt); if (!leb_cnt) return 0; - c->ilebs = kmalloc(leb_cnt * sizeof(int), GFP_NOFS); + c->ilebs = kmalloc_array(leb_cnt, sizeof(int), GFP_NOFS); if (!c->ilebs) return -ENOMEM; for (i = 0; i < leb_cnt; i++) { diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 8254b8b3690f..488088141451 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -541,7 +541,9 @@ static int ufs_read_cylinder_structures(struct super_block *sb) * Read cylinder group (we read only first fragment from block * at this time) and prepare internal data structures for cg caching. */ - if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS))) + sbi->s_ucg = kmalloc_array(uspi->s_ncg, sizeof(struct buffer_head *), + GFP_NOFS); + if (!sbi->s_ucg) goto failed; for (i = 0; i < uspi->s_ncg; i++) sbi->s_ucg[i] = NULL; diff --git a/kernel/bpf/lpm_trie.c b/kernel/bpf/lpm_trie.c index b4b5b81e7251..1603492c9cc7 100644 --- a/kernel/bpf/lpm_trie.c +++ b/kernel/bpf/lpm_trie.c @@ -623,8 +623,9 @@ static int trie_get_next_key(struct bpf_map *map, void *_key, void *_next_key) if (!key || key->prefixlen > trie->max_prefixlen) goto find_leftmost; - node_stack = kmalloc(trie->max_prefixlen * sizeof(struct lpm_trie_node *), - GFP_ATOMIC | __GFP_NOWARN); + node_stack = kmalloc_array(trie->max_prefixlen, + sizeof(struct lpm_trie_node *), + GFP_ATOMIC | __GFP_NOWARN); if (!node_stack) return -ENOMEM; diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c index e06c97f3ed1a..9b3f9b04f817 100644 --- a/kernel/cgroup/cgroup-v1.c +++ b/kernel/cgroup/cgroup-v1.c @@ -197,7 +197,7 @@ static void *pidlist_allocate(int count) if (PIDLIST_TOO_LARGE(count)) return vmalloc(count * sizeof(pid_t)); else - return kmalloc(count * sizeof(pid_t), GFP_KERNEL); + return kmalloc_array(count, sizeof(pid_t), GFP_KERNEL); } static void pidlist_free(void *p) diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index b42037e6e81d..d8b12e0d39cd 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -683,7 +683,7 @@ static int generate_sched_domains(cpumask_var_t **domains, goto done; } - csa = kmalloc(nr_cpusets() * sizeof(cp), GFP_KERNEL); + csa = kmalloc_array(nr_cpusets(), sizeof(cp), GFP_KERNEL); if (!csa) goto done; csn = 0; @@ -753,7 +753,8 @@ restart: * The rest of the code, including the scheduler, can deal with * dattr==NULL case. No need to abort if alloc fails. */ - dattr = kmalloc(ndoms * sizeof(struct sched_domain_attr), GFP_KERNEL); + dattr = kmalloc_array(ndoms, sizeof(struct sched_domain_attr), + GFP_KERNEL); for (nslot = 0, i = 0; i < csn; i++) { struct cpuset *a = csa[i]; diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c index e405677ee08d..aaa69531fae2 100644 --- a/kernel/debug/kdb/kdb_main.c +++ b/kernel/debug/kdb/kdb_main.c @@ -729,8 +729,8 @@ static int kdb_defcmd(int argc, const char **argv) kdb_printf("Command only available during kdb_init()\n"); return KDB_NOTIMP; } - defcmd_set = kmalloc((defcmd_set_count + 1) * sizeof(*defcmd_set), - GFP_KDB); + defcmd_set = kmalloc_array(defcmd_set_count + 1, sizeof(*defcmd_set), + GFP_KDB); if (!defcmd_set) goto fail_defcmd; memcpy(defcmd_set, save_defcmd_set, @@ -2706,8 +2706,11 @@ int kdb_register_flags(char *cmd, } if (i >= kdb_max_commands) { - kdbtab_t *new = kmalloc((kdb_max_commands - KDB_BASE_CMD_MAX + - kdb_command_extend) * sizeof(*new), GFP_KDB); + kdbtab_t *new = kmalloc_array(kdb_max_commands - + KDB_BASE_CMD_MAX + + kdb_command_extend, + sizeof(*new), + GFP_KDB); if (!new) { kdb_printf("Could not allocate new kdb_command " "table\n"); diff --git a/kernel/fail_function.c b/kernel/fail_function.c index 1d5632d8bbcc..5349c91c2298 100644 --- a/kernel/fail_function.c +++ b/kernel/fail_function.c @@ -258,7 +258,7 @@ static ssize_t fei_write(struct file *file, const char __user *buffer, /* cut off if it is too long */ if (count > KSYM_NAME_LEN) count = KSYM_NAME_LEN; - buf = kmalloc(sizeof(char) * (count + 1), GFP_KERNEL); + buf = kmalloc(count + 1, GFP_KERNEL); if (!buf) return -ENOMEM; diff --git a/kernel/locking/locktorture.c b/kernel/locking/locktorture.c index 6850ffd69125..4ceeb13a74ed 100644 --- a/kernel/locking/locktorture.c +++ b/kernel/locking/locktorture.c @@ -913,7 +913,9 @@ static int __init lock_torture_init(void) /* Initialize the statistics so that each run gets its own numbers. */ if (nwriters_stress) { lock_is_write_held = 0; - cxt.lwsa = kmalloc(sizeof(*cxt.lwsa) * cxt.nrealwriters_stress, GFP_KERNEL); + cxt.lwsa = kmalloc_array(cxt.nrealwriters_stress, + sizeof(*cxt.lwsa), + GFP_KERNEL); if (cxt.lwsa == NULL) { VERBOSE_TOROUT_STRING("cxt.lwsa: Out of memory"); firsterr = -ENOMEM; @@ -942,7 +944,9 @@ static int __init lock_torture_init(void) if (nreaders_stress) { lock_is_read_held = 0; - cxt.lrsa = kmalloc(sizeof(*cxt.lrsa) * cxt.nrealreaders_stress, GFP_KERNEL); + cxt.lrsa = kmalloc_array(cxt.nrealreaders_stress, + sizeof(*cxt.lrsa), + GFP_KERNEL); if (cxt.lrsa == NULL) { VERBOSE_TOROUT_STRING("cxt.lrsa: Out of memory"); firsterr = -ENOMEM; diff --git a/kernel/relay.c b/kernel/relay.c index c955b10c973c..9f5326e8a036 100644 --- a/kernel/relay.c +++ b/kernel/relay.c @@ -169,7 +169,8 @@ static struct rchan_buf *relay_create_buf(struct rchan *chan) buf = kzalloc(sizeof(struct rchan_buf), GFP_KERNEL); if (!buf) return NULL; - buf->padding = kmalloc(chan->n_subbufs * sizeof(size_t *), GFP_KERNEL); + buf->padding = kmalloc_array(chan->n_subbufs, sizeof(size_t *), + GFP_KERNEL); if (!buf->padding) goto free_buf; diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 61a1125c1ae4..05a831427bc7 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1750,7 +1750,7 @@ cpumask_var_t *alloc_sched_domains(unsigned int ndoms) int i; cpumask_var_t *doms; - doms = kmalloc(sizeof(*doms) * ndoms, GFP_KERNEL); + doms = kmalloc_array(ndoms, sizeof(*doms), GFP_KERNEL); if (!doms) return NULL; for (i = 0; i < ndoms; i++) { diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 8d83bcf9ef69..df4b6254f986 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -6830,9 +6830,10 @@ static int alloc_retstack_tasklist(struct ftrace_ret_stack **ret_stack_list) struct task_struct *g, *t; for (i = 0; i < FTRACE_RETSTACK_ALLOC_SIZE; i++) { - ret_stack_list[i] = kmalloc(FTRACE_RETFUNC_DEPTH - * sizeof(struct ftrace_ret_stack), - GFP_KERNEL); + ret_stack_list[i] = + kmalloc_array(FTRACE_RETFUNC_DEPTH, + sizeof(struct ftrace_ret_stack), + GFP_KERNEL); if (!ret_stack_list[i]) { start = 0; end = i; @@ -6904,9 +6905,9 @@ static int start_graph_tracing(void) struct ftrace_ret_stack **ret_stack_list; int ret, cpu; - ret_stack_list = kmalloc(FTRACE_RETSTACK_ALLOC_SIZE * - sizeof(struct ftrace_ret_stack *), - GFP_KERNEL); + ret_stack_list = kmalloc_array(FTRACE_RETSTACK_ALLOC_SIZE, + sizeof(struct ftrace_ret_stack *), + GFP_KERNEL); if (!ret_stack_list) return -ENOMEM; @@ -7088,9 +7089,10 @@ void ftrace_graph_init_idle_task(struct task_struct *t, int cpu) ret_stack = per_cpu(idle_ret_stack, cpu); if (!ret_stack) { - ret_stack = kmalloc(FTRACE_RETFUNC_DEPTH - * sizeof(struct ftrace_ret_stack), - GFP_KERNEL); + ret_stack = + kmalloc_array(FTRACE_RETFUNC_DEPTH, + sizeof(struct ftrace_ret_stack), + GFP_KERNEL); if (!ret_stack) return; per_cpu(idle_ret_stack, cpu) = ret_stack; @@ -7109,9 +7111,9 @@ void ftrace_graph_init_task(struct task_struct *t) if (ftrace_graph_active) { struct ftrace_ret_stack *ret_stack; - ret_stack = kmalloc(FTRACE_RETFUNC_DEPTH - * sizeof(struct ftrace_ret_stack), - GFP_KERNEL); + ret_stack = kmalloc_array(FTRACE_RETFUNC_DEPTH, + sizeof(struct ftrace_ret_stack), + GFP_KERNEL); if (!ret_stack) return; graph_init_task(t, ret_stack); diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 108ce3e1dc13..8ea855015613 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1751,12 +1751,13 @@ static inline void set_cmdline(int idx, const char *cmdline) static int allocate_cmdlines_buffer(unsigned int val, struct saved_cmdlines_buffer *s) { - s->map_cmdline_to_pid = kmalloc(val * sizeof(*s->map_cmdline_to_pid), - GFP_KERNEL); + s->map_cmdline_to_pid = kmalloc_array(val, + sizeof(*s->map_cmdline_to_pid), + GFP_KERNEL); if (!s->map_cmdline_to_pid) return -ENOMEM; - s->saved_cmdlines = kmalloc(val * TASK_COMM_LEN, GFP_KERNEL); + s->saved_cmdlines = kmalloc_array(TASK_COMM_LEN, val, GFP_KERNEL); if (!s->saved_cmdlines) { kfree(s->map_cmdline_to_pid); return -ENOMEM; @@ -5063,7 +5064,7 @@ trace_insert_eval_map_file(struct module *mod, struct trace_eval_map **start, * where the head holds the module and length of array, and the * tail holds a pointer to the next list. */ - map_array = kmalloc(sizeof(*map_array) * (len + 2), GFP_KERNEL); + map_array = kmalloc_array(len + 2, sizeof(*map_array), GFP_KERNEL); if (!map_array) { pr_warn("Unable to allocate trace eval mapping\n"); return; diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index 0171407d231f..e1c818dbc0d7 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -436,15 +436,15 @@ predicate_parse(const char *str, int nr_parens, int nr_preds, nr_preds += 2; /* For TRUE and FALSE */ - op_stack = kmalloc(sizeof(*op_stack) * nr_parens, GFP_KERNEL); + op_stack = kmalloc_array(nr_parens, sizeof(*op_stack), GFP_KERNEL); if (!op_stack) return ERR_PTR(-ENOMEM); - prog_stack = kmalloc(sizeof(*prog_stack) * nr_preds, GFP_KERNEL); + prog_stack = kmalloc_array(nr_preds, sizeof(*prog_stack), GFP_KERNEL); if (!prog_stack) { parse_error(pe, -ENOMEM, 0); goto out_free; } - inverts = kmalloc(sizeof(*inverts) * nr_preds, GFP_KERNEL); + inverts = kmalloc_array(nr_preds, sizeof(*inverts), GFP_KERNEL); if (!inverts) { parse_error(pe, -ENOMEM, 0); goto out_free; diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index 492c255e6c5a..c3d7583fcd21 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -764,8 +764,9 @@ static int insert_extent(struct uid_gid_map *map, struct uid_gid_extent *extent) struct uid_gid_extent *forward; /* Allocate memory for 340 mappings. */ - forward = kmalloc(sizeof(struct uid_gid_extent) * - UID_GID_MAP_MAX_EXTENTS, GFP_KERNEL); + forward = kmalloc_array(UID_GID_MAP_MAX_EXTENTS, + sizeof(struct uid_gid_extent), + GFP_KERNEL); if (!forward) return -ENOMEM; diff --git a/lib/argv_split.c b/lib/argv_split.c index 5c35752a9414..1a19a0a93dc1 100644 --- a/lib/argv_split.c +++ b/lib/argv_split.c @@ -69,7 +69,7 @@ char **argv_split(gfp_t gfp, const char *str, int *argcp) return NULL; argc = count_argc(argv_str); - argv = kmalloc(sizeof(*argv) * (argc + 2), gfp); + argv = kmalloc_array(argc + 2, sizeof(*argv), gfp); if (!argv) { kfree(argv_str); return NULL; diff --git a/lib/interval_tree_test.c b/lib/interval_tree_test.c index 835242e74aaa..75509a1511a3 100644 --- a/lib/interval_tree_test.c +++ b/lib/interval_tree_test.c @@ -64,11 +64,12 @@ static int interval_tree_test_init(void) unsigned long results; cycles_t time1, time2, time; - nodes = kmalloc(nnodes * sizeof(struct interval_tree_node), GFP_KERNEL); + nodes = kmalloc_array(nnodes, sizeof(struct interval_tree_node), + GFP_KERNEL); if (!nodes) return -ENOMEM; - queries = kmalloc(nsearches * sizeof(int), GFP_KERNEL); + queries = kmalloc_array(nsearches, sizeof(int), GFP_KERNEL); if (!queries) { kfree(nodes); return -ENOMEM; diff --git a/lib/kfifo.c b/lib/kfifo.c index b0f757bf7213..015656aa8182 100644 --- a/lib/kfifo.c +++ b/lib/kfifo.c @@ -54,7 +54,7 @@ int __kfifo_alloc(struct __kfifo *fifo, unsigned int size, return -EINVAL; } - fifo->data = kmalloc(size * esize, gfp_mask); + fifo->data = kmalloc_array(esize, size, gfp_mask); if (!fifo->data) { fifo->mask = 0; diff --git a/lib/mpi/mpiutil.c b/lib/mpi/mpiutil.c index 314f4dfa603e..2dbfc4c8a237 100644 --- a/lib/mpi/mpiutil.c +++ b/lib/mpi/mpiutil.c @@ -91,7 +91,7 @@ int mpi_resize(MPI a, unsigned nlimbs) return 0; /* no need to do it */ if (a->d) { - p = kmalloc(nlimbs * sizeof(mpi_limb_t), GFP_KERNEL); + p = kmalloc_array(nlimbs, sizeof(mpi_limb_t), GFP_KERNEL); if (!p) return -ENOMEM; memcpy(p, a->d, a->alloced * sizeof(mpi_limb_t)); diff --git a/lib/rbtree_test.c b/lib/rbtree_test.c index 7d36c1e27ff6..b7055b2a07d3 100644 --- a/lib/rbtree_test.c +++ b/lib/rbtree_test.c @@ -247,7 +247,7 @@ static int __init rbtree_test_init(void) cycles_t time1, time2, time; struct rb_node *node; - nodes = kmalloc(nnodes * sizeof(*nodes), GFP_KERNEL); + nodes = kmalloc_array(nnodes, sizeof(*nodes), GFP_KERNEL); if (!nodes) return -ENOMEM; diff --git a/lib/reed_solomon/reed_solomon.c b/lib/reed_solomon/reed_solomon.c index dfcf54242fb9..d8bb1a1eba72 100644 --- a/lib/reed_solomon/reed_solomon.c +++ b/lib/reed_solomon/reed_solomon.c @@ -88,15 +88,15 @@ static struct rs_codec *codec_init(int symsize, int gfpoly, int (*gffunc)(int), rs->gffunc = gffunc; /* Allocate the arrays */ - rs->alpha_to = kmalloc(sizeof(uint16_t) * (rs->nn + 1), gfp); + rs->alpha_to = kmalloc_array(rs->nn + 1, sizeof(uint16_t), gfp); if (rs->alpha_to == NULL) goto err; - rs->index_of = kmalloc(sizeof(uint16_t) * (rs->nn + 1), gfp); + rs->index_of = kmalloc_array(rs->nn + 1, sizeof(uint16_t), gfp); if (rs->index_of == NULL) goto err; - rs->genpoly = kmalloc(sizeof(uint16_t) * (rs->nroots + 1), gfp); + rs->genpoly = kmalloc_array(rs->nroots + 1, sizeof(uint16_t), gfp); if(rs->genpoly == NULL) goto err; diff --git a/lib/scatterlist.c b/lib/scatterlist.c index 06dad7a072fd..1642fd507a96 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -170,7 +170,8 @@ static struct scatterlist *sg_kmalloc(unsigned int nents, gfp_t gfp_mask) kmemleak_alloc(ptr, PAGE_SIZE, 1, gfp_mask); return ptr; } else - return kmalloc(nents * sizeof(struct scatterlist), gfp_mask); + return kmalloc_array(nents, sizeof(struct scatterlist), + gfp_mask); } static void sg_kfree(struct scatterlist *sg, unsigned int nents) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index ba8fdc0b6e7f..1cd7c1a57a14 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1131,8 +1131,8 @@ static int do_huge_pmd_wp_page_fallback(struct vm_fault *vmf, pmd_t orig_pmd, unsigned long mmun_start; /* For mmu_notifiers */ unsigned long mmun_end; /* For mmu_notifiers */ - pages = kmalloc(sizeof(struct page *) * HPAGE_PMD_NR, - GFP_KERNEL); + pages = kmalloc_array(HPAGE_PMD_NR, sizeof(struct page *), + GFP_KERNEL); if (unlikely(!pages)) { ret |= VM_FAULT_OOM; goto out; diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 696befffe6f7..3612fbb32e9d 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2798,7 +2798,8 @@ static int __init hugetlb_init(void) num_fault_mutexes = 1; #endif hugetlb_fault_mutex_table = - kmalloc(sizeof(struct mutex) * num_fault_mutexes, GFP_KERNEL); + kmalloc_array(num_fault_mutexes, sizeof(struct mutex), + GFP_KERNEL); BUG_ON(!hugetlb_fault_mutex_table); for (i = 0; i < num_fault_mutexes; i++) diff --git a/mm/slub.c b/mm/slub.c index 15505479c3ab..faf5dcb7b44f 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -4412,8 +4412,9 @@ static long validate_slab_cache(struct kmem_cache *s) { int node; unsigned long count = 0; - unsigned long *map = kmalloc(BITS_TO_LONGS(oo_objects(s->max)) * - sizeof(unsigned long), GFP_KERNEL); + unsigned long *map = kmalloc_array(BITS_TO_LONGS(oo_objects(s->max)), + sizeof(unsigned long), + GFP_KERNEL); struct kmem_cache_node *n; if (!map) @@ -4573,8 +4574,9 @@ static int list_locations(struct kmem_cache *s, char *buf, unsigned long i; struct loc_track t = { 0, 0, NULL }; int node; - unsigned long *map = kmalloc(BITS_TO_LONGS(oo_objects(s->max)) * - sizeof(unsigned long), GFP_KERNEL); + unsigned long *map = kmalloc_array(BITS_TO_LONGS(oo_objects(s->max)), + sizeof(unsigned long), + GFP_KERNEL); struct kmem_cache_node *n; if (!map || !alloc_loc_track(&t, PAGE_SIZE / sizeof(struct location), @@ -5293,7 +5295,7 @@ static int show_stat(struct kmem_cache *s, char *buf, enum stat_item si) unsigned long sum = 0; int cpu; int len; - int *data = kmalloc(nr_cpu_ids * sizeof(int), GFP_KERNEL); + int *data = kmalloc_array(nr_cpu_ids, sizeof(int), GFP_KERNEL); if (!data) return -ENOMEM; diff --git a/net/9p/protocol.c b/net/9p/protocol.c index 16e10680518c..931ea00c4fed 100644 --- a/net/9p/protocol.c +++ b/net/9p/protocol.c @@ -242,8 +242,9 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt, "w", nwname); if (!errcode) { *wnames = - kmalloc(sizeof(char *) * *nwname, - GFP_NOFS); + kmalloc_array(*nwname, + sizeof(char *), + GFP_NOFS); if (!*wnames) errcode = -ENOMEM; } @@ -285,9 +286,9 @@ p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt, p9pdu_readf(pdu, proto_version, "w", nwqid); if (!errcode) { *wqids = - kmalloc(*nwqid * - sizeof(struct p9_qid), - GFP_NOFS); + kmalloc_array(*nwqid, + sizeof(struct p9_qid), + GFP_NOFS); if (*wqids == NULL) errcode = -ENOMEM; } diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c index 4d0372263e5d..05006cbb3361 100644 --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -360,7 +360,8 @@ static int p9_get_mapped_pages(struct virtio_chan *chan, nr_pages = DIV_ROUND_UP((unsigned long)p + len, PAGE_SIZE) - (unsigned long)p / PAGE_SIZE; - *pages = kmalloc(sizeof(struct page *) * nr_pages, GFP_NOFS); + *pages = kmalloc_array(nr_pages, sizeof(struct page *), + GFP_NOFS); if (!*pages) return -ENOMEM; diff --git a/net/atm/mpc.c b/net/atm/mpc.c index 31e0dcb970f8..75620c2f2617 100644 --- a/net/atm/mpc.c +++ b/net/atm/mpc.c @@ -472,7 +472,7 @@ static const uint8_t *copy_macs(struct mpoa_client *mpc, if (mpc->number_of_mps_macs != 0) kfree(mpc->mps_macs); mpc->number_of_mps_macs = 0; - mpc->mps_macs = kmalloc(num_macs * ETH_ALEN, GFP_KERNEL); + mpc->mps_macs = kmalloc_array(ETH_ALEN, num_macs, GFP_KERNEL); if (mpc->mps_macs == NULL) { pr_info("(%s) out of mem\n", mpc->dev->name); return NULL; diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 1dec33790198..ee8ef1228263 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1281,7 +1281,7 @@ int hci_inquiry(void __user *arg) /* cache_dump can't sleep. Therefore we allocate temp buffer and then * copy it to the user space. */ - buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); + buf = kmalloc_array(max_rsp, sizeof(struct inquiry_info), GFP_KERNEL); if (!buf) { err = -ENOMEM; goto done; diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 9b7907ebfa01..d17a4736e47c 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -331,7 +331,7 @@ static int l2cap_seq_list_init(struct l2cap_seq_list *seq_list, u16 size) */ alloc_size = roundup_pow_of_two(size); - seq_list->list = kmalloc(sizeof(u16) * alloc_size, GFP_KERNEL); + seq_list->list = kmalloc_array(alloc_size, sizeof(u16), GFP_KERNEL); if (!seq_list->list) return -ENOMEM; diff --git a/net/can/bcm.c b/net/can/bcm.c index 97fedff3f0c4..394ff1d2791f 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -923,8 +923,9 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg, /* create array for CAN frames and copy the data */ if (msg_head->nframes > 1) { - op->frames = kmalloc(msg_head->nframes * op->cfsiz, - GFP_KERNEL); + op->frames = kmalloc_array(msg_head->nframes, + op->cfsiz, + GFP_KERNEL); if (!op->frames) { kfree(op); return -ENOMEM; @@ -1095,8 +1096,9 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg, if (msg_head->nframes > 1) { /* create array for CAN frames and copy the data */ - op->frames = kmalloc(msg_head->nframes * op->cfsiz, - GFP_KERNEL); + op->frames = kmalloc_array(msg_head->nframes, + op->cfsiz, + GFP_KERNEL); if (!op->frames) { kfree(op); return -ENOMEM; diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index 9645ffd6acfb..e22820e24f50 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -1299,8 +1299,9 @@ static int set_primary_affinity(struct ceph_osdmap *map, int osd, u32 aff) if (!map->osd_primary_affinity) { int i; - map->osd_primary_affinity = kmalloc(map->max_osd*sizeof(u32), - GFP_NOFS); + map->osd_primary_affinity = kmalloc_array(map->max_osd, + sizeof(u32), + GFP_NOFS); if (!map->osd_primary_affinity) return -ENOMEM; diff --git a/net/ceph/pagevec.c b/net/ceph/pagevec.c index a3d0adc828e6..e560d3975f41 100644 --- a/net/ceph/pagevec.c +++ b/net/ceph/pagevec.c @@ -20,7 +20,7 @@ struct page **ceph_get_direct_page_vector(const void __user *data, int got = 0; int rc = 0; - pages = kmalloc(sizeof(*pages) * num_pages, GFP_NOFS); + pages = kmalloc_array(num_pages, sizeof(*pages), GFP_NOFS); if (!pages) return ERR_PTR(-ENOMEM); @@ -74,7 +74,7 @@ struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags) struct page **pages; int i; - pages = kmalloc(sizeof(*pages) * num_pages, flags); + pages = kmalloc_array(num_pages, sizeof(*pages), flags); if (!pages) return ERR_PTR(-ENOMEM); for (i = 0; i < num_pages; i++) { diff --git a/net/core/dev.c b/net/core/dev.c index 6e18242a1cae..57b7bab5f70b 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -8823,7 +8823,7 @@ static struct hlist_head * __net_init netdev_create_hash(void) int i; struct hlist_head *hash; - hash = kmalloc(sizeof(*hash) * NETDEV_HASHENTRIES, GFP_KERNEL); + hash = kmalloc_array(NETDEV_HASHENTRIES, sizeof(*hash), GFP_KERNEL); if (hash != NULL) for (i = 0; i < NETDEV_HASHENTRIES; i++) INIT_HLIST_HEAD(&hash[i]); diff --git a/net/core/ethtool.c b/net/core/ethtool.c index c15075dc7572..436e4f9cc7f0 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -1816,7 +1816,7 @@ static int ethtool_self_test(struct net_device *dev, char __user *useraddr) return -EFAULT; test.len = test_len; - data = kmalloc(test_len * sizeof(u64), GFP_USER); + data = kmalloc_array(test_len, sizeof(u64), GFP_USER); if (!data) return -ENOMEM; diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index d2f4e0c1faaf..2589a6b78aa1 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -984,7 +984,8 @@ static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb, */ err = ops->peer_getappinfo(netdev, &info, &app_count); if (!err && app_count) { - table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL); + table = kmalloc_array(app_count, sizeof(struct dcb_app), + GFP_KERNEL); if (!table) return -ENOMEM; diff --git a/net/dccp/ccids/ccid2.c b/net/dccp/ccids/ccid2.c index 385f153fe031..2b75df469220 100644 --- a/net/dccp/ccids/ccid2.c +++ b/net/dccp/ccids/ccid2.c @@ -46,7 +46,8 @@ static int ccid2_hc_tx_alloc_seq(struct ccid2_hc_tx_sock *hc) return -ENOMEM; /* allocate buffer and initialize linked list */ - seqp = kmalloc(CCID2_SEQBUF_LEN * sizeof(struct ccid2_seq), gfp_any()); + seqp = kmalloc_array(CCID2_SEQBUF_LEN, sizeof(struct ccid2_seq), + gfp_any()); if (seqp == NULL) return -ENOMEM; diff --git a/net/ipv4/route.c b/net/ipv4/route.c index bf4e4adc2d00..6bcd1eacc1f0 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -3146,7 +3146,8 @@ int __init ip_rt_init(void) { int cpu; - ip_idents = kmalloc(IP_IDENTS_SZ * sizeof(*ip_idents), GFP_KERNEL); + ip_idents = kmalloc_array(IP_IDENTS_SZ, sizeof(*ip_idents), + GFP_KERNEL); if (!ip_idents) panic("IP: failed to allocate ip_idents\n"); diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 4d2e797e3f16..fb1b1f9e7e5e 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -772,7 +772,7 @@ static int ieee80211_init_cipher_suites(struct ieee80211_local *local) if (have_mfp) n_suites += 4; - suites = kmalloc(sizeof(u32) * n_suites, GFP_KERNEL); + suites = kmalloc_array(n_suites, sizeof(u32), GFP_KERNEL); if (!suites) return -ENOMEM; diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c index 8221bc5582ab..7fadfbca9f1b 100644 --- a/net/mac80211/rc80211_minstrel.c +++ b/net/mac80211/rc80211_minstrel.c @@ -596,7 +596,7 @@ minstrel_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp) if (!mi->r) goto error; - mi->sample_table = kmalloc(SAMPLE_COLUMNS * max_rates, gfp); + mi->sample_table = kmalloc_array(max_rates, SAMPLE_COLUMNS, gfp); if (!mi->sample_table) goto error1; diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c index fb586b6e5d49..267ab9d5137e 100644 --- a/net/mac80211/rc80211_minstrel_ht.c +++ b/net/mac80211/rc80211_minstrel_ht.c @@ -1317,7 +1317,7 @@ minstrel_ht_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp) if (!msp->ratelist) goto error; - msp->sample_table = kmalloc(SAMPLE_COLUMNS * max_rates, gfp); + msp->sample_table = kmalloc_array(max_rates, SAMPLE_COLUMNS, gfp); if (!msp->sample_table) goto error1; diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c index afdeca53e88b..d88841fbc560 100644 --- a/net/netfilter/nf_conntrack_proto.c +++ b/net/netfilter/nf_conntrack_proto.c @@ -402,7 +402,8 @@ int nf_ct_l4proto_register_one(const struct nf_conntrack_l4proto *l4proto) struct nf_conntrack_l4proto __rcu **proto_array; int i; - proto_array = kmalloc(MAX_NF_CT_PROTO * + proto_array = + kmalloc_array(MAX_NF_CT_PROTO, sizeof(struct nf_conntrack_l4proto *), GFP_KERNEL); if (proto_array == NULL) { diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c index b7df32a56e7e..46f9df99d276 100644 --- a/net/netfilter/nf_nat_core.c +++ b/net/netfilter/nf_nat_core.c @@ -691,8 +691,9 @@ int nf_nat_l4proto_register(u8 l3proto, const struct nf_nat_l4proto *l4proto) mutex_lock(&nf_nat_proto_mutex); if (nf_nat_l4protos[l3proto] == NULL) { - l4protos = kmalloc(IPPROTO_MAX * sizeof(struct nf_nat_l4proto *), - GFP_KERNEL); + l4protos = kmalloc_array(IPPROTO_MAX, + sizeof(struct nf_nat_l4proto *), + GFP_KERNEL); if (l4protos == NULL) { ret = -ENOMEM; goto out; diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index ca4c4d994ddb..cae4a026859d 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -7164,8 +7164,8 @@ static int __init nf_tables_module_init(void) nft_chain_filter_init(); - info = kmalloc(sizeof(struct nft_expr_info) * NFT_RULE_MAXEXPRS, - GFP_KERNEL); + info = kmalloc_array(NFT_RULE_MAXEXPRS, sizeof(struct nft_expr_info), + GFP_KERNEL); if (info == NULL) { err = -ENOMEM; goto err1; diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index df9ab71b0ed9..d0d8397c9588 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -1904,7 +1904,7 @@ static int __init xt_init(void) seqcount_init(&per_cpu(xt_recseq, i)); } - xt = kmalloc(sizeof(struct xt_af) * NFPROTO_NUMPROTO, GFP_KERNEL); + xt = kmalloc_array(NFPROTO_NUMPROTO, sizeof(struct xt_af), GFP_KERNEL); if (!xt) return -ENOMEM; diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index b9ce82c9440f..25eeb6d2a75a 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -352,8 +352,9 @@ int genl_register_family(struct genl_family *family) } if (family->maxattr && !family->parallel_ops) { - family->attrbuf = kmalloc((family->maxattr+1) * - sizeof(struct nlattr *), GFP_KERNEL); + family->attrbuf = kmalloc_array(family->maxattr + 1, + sizeof(struct nlattr *), + GFP_KERNEL); if (family->attrbuf == NULL) { err = -ENOMEM; goto errout_locked; @@ -566,8 +567,9 @@ static int genl_family_rcv_msg(const struct genl_family *family, return -EOPNOTSUPP; if (family->maxattr && family->parallel_ops) { - attrbuf = kmalloc((family->maxattr+1) * - sizeof(struct nlattr *), GFP_KERNEL); + attrbuf = kmalloc_array(family->maxattr + 1, + sizeof(struct nlattr *), + GFP_KERNEL); if (attrbuf == NULL) return -ENOMEM; } else diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index a61818e94396..0f5ce77460d4 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -1578,8 +1578,9 @@ static int ovs_dp_cmd_new(struct sk_buff *skb, struct genl_info *info) goto err_destroy_table; } - dp->ports = kmalloc(DP_VPORT_HASH_BUCKETS * sizeof(struct hlist_head), - GFP_KERNEL); + dp->ports = kmalloc_array(DP_VPORT_HASH_BUCKETS, + sizeof(struct hlist_head), + GFP_KERNEL); if (!dp->ports) { err = -ENOMEM; goto err_destroy_percpu; diff --git a/net/rds/info.c b/net/rds/info.c index 140a44a5f7b7..e367a97a18c8 100644 --- a/net/rds/info.c +++ b/net/rds/info.c @@ -188,7 +188,7 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval, nr_pages = (PAGE_ALIGN(start + len) - (start & PAGE_MASK)) >> PAGE_SHIFT; - pages = kmalloc(nr_pages * sizeof(struct page *), GFP_KERNEL); + pages = kmalloc_array(nr_pages, sizeof(struct page *), GFP_KERNEL); if (!pages) { ret = -ENOMEM; goto out; diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c index 6c0ae27fff84..278ac0807a60 100644 --- a/net/rxrpc/rxkad.c +++ b/net/rxrpc/rxkad.c @@ -432,7 +432,7 @@ static int rxkad_verify_packet_2(struct rxrpc_call *call, struct sk_buff *skb, sg = _sg; if (unlikely(nsg > 4)) { - sg = kmalloc(sizeof(*sg) * nsg, GFP_NOIO); + sg = kmalloc_array(nsg, sizeof(*sg), GFP_NOIO); if (!sg) goto nomem; } diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 11d93377ba5e..5dffbc493008 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -1438,7 +1438,7 @@ static __init int sctp_init(void) /* Allocate and initialize the endpoint hash table. */ sctp_ep_hashsize = 64; sctp_ep_hashtable = - kmalloc(64 * sizeof(struct sctp_hashbucket), GFP_KERNEL); + kmalloc_array(64, sizeof(struct sctp_hashbucket), GFP_KERNEL); if (!sctp_ep_hashtable) { pr_err("Failed endpoint_hash alloc\n"); status = -ENOMEM; diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index 9463af4b32e8..be8f103d22fd 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -1753,7 +1753,8 @@ alloc_enc_pages(struct rpc_rqst *rqstp) last = (snd_buf->page_base + snd_buf->page_len - 1) >> PAGE_SHIFT; rqstp->rq_enc_pages_num = last - first + 1 + 1; rqstp->rq_enc_pages - = kmalloc(rqstp->rq_enc_pages_num * sizeof(struct page *), + = kmalloc_array(rqstp->rq_enc_pages_num, + sizeof(struct page *), GFP_NOFS); if (!rqstp->rq_enc_pages) goto out; diff --git a/net/tipc/netlink_compat.c b/net/tipc/netlink_compat.c index 4492cda45566..a2f76743c73a 100644 --- a/net/tipc/netlink_compat.c +++ b/net/tipc/netlink_compat.c @@ -285,8 +285,9 @@ static int __tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd, if (!trans_buf) return -ENOMEM; - attrbuf = kmalloc((tipc_genl_family.maxattr + 1) * - sizeof(struct nlattr *), GFP_KERNEL); + attrbuf = kmalloc_array(tipc_genl_family.maxattr + 1, + sizeof(struct nlattr *), + GFP_KERNEL); if (!attrbuf) { err = -ENOMEM; goto trans_out; diff --git a/security/keys/trusted.c b/security/keys/trusted.c index 423776682025..b69d3b1777c2 100644 --- a/security/keys/trusted.c +++ b/security/keys/trusted.c @@ -1148,7 +1148,7 @@ static long trusted_read(const struct key *key, char __user *buffer, return -EINVAL; if (buffer && buflen >= 2 * p->blob_len) { - ascii_buf = kmalloc(2 * p->blob_len, GFP_KERNEL); + ascii_buf = kmalloc_array(2, p->blob_len, GFP_KERNEL); if (!ascii_buf) return -ENOMEM; diff --git a/sound/core/pcm_compat.c b/sound/core/pcm_compat.c index 39d853bfa5ac..946ab080ac00 100644 --- a/sound/core/pcm_compat.c +++ b/sound/core/pcm_compat.c @@ -426,7 +426,7 @@ static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream, get_user(frames, &data32->frames)) return -EFAULT; bufptr = compat_ptr(buf); - bufs = kmalloc(sizeof(void __user *) * ch, GFP_KERNEL); + bufs = kmalloc_array(ch, sizeof(void __user *), GFP_KERNEL); if (bufs == NULL) return -ENOMEM; for (i = 0; i < ch; i++) { diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 04c6301394d0..cecc79772c94 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3072,7 +3072,7 @@ static ssize_t snd_pcm_readv(struct kiocb *iocb, struct iov_iter *to) if (!frame_aligned(runtime, to->iov->iov_len)) return -EINVAL; frames = bytes_to_samples(runtime, to->iov->iov_len); - bufs = kmalloc(sizeof(void *) * to->nr_segs, GFP_KERNEL); + bufs = kmalloc_array(to->nr_segs, sizeof(void *), GFP_KERNEL); if (bufs == NULL) return -ENOMEM; for (i = 0; i < to->nr_segs; ++i) @@ -3107,7 +3107,7 @@ static ssize_t snd_pcm_writev(struct kiocb *iocb, struct iov_iter *from) !frame_aligned(runtime, from->iov->iov_len)) return -EINVAL; frames = bytes_to_samples(runtime, from->iov->iov_len); - bufs = kmalloc(sizeof(void *) * from->nr_segs, GFP_KERNEL); + bufs = kmalloc_array(from->nr_segs, sizeof(void *), GFP_KERNEL); if (bufs == NULL) return -ENOMEM; for (i = 0; i < from->nr_segs; ++i) diff --git a/sound/core/seq/seq_midi_emul.c b/sound/core/seq/seq_midi_emul.c index 9e2912e3e80f..288f839a554b 100644 --- a/sound/core/seq/seq_midi_emul.c +++ b/sound/core/seq/seq_midi_emul.c @@ -657,7 +657,7 @@ static struct snd_midi_channel *snd_midi_channel_init_set(int n) struct snd_midi_channel *chan; int i; - chan = kmalloc(n * sizeof(struct snd_midi_channel), GFP_KERNEL); + chan = kmalloc_array(n, sizeof(struct snd_midi_channel), GFP_KERNEL); if (chan) { for (i = 0; i < n; i++) snd_midi_channel_init(chan+i, i); diff --git a/sound/firewire/packets-buffer.c b/sound/firewire/packets-buffer.c index ea1506679c66..1ebf00c83409 100644 --- a/sound/firewire/packets-buffer.c +++ b/sound/firewire/packets-buffer.c @@ -27,7 +27,7 @@ int iso_packets_buffer_init(struct iso_packets_buffer *b, struct fw_unit *unit, void *p; int err; - b->packets = kmalloc(count * sizeof(*b->packets), GFP_KERNEL); + b->packets = kmalloc_array(count, sizeof(*b->packets), GFP_KERNEL); if (!b->packets) { err = -ENOMEM; goto error; diff --git a/sound/oss/dmasound/dmasound_core.c b/sound/oss/dmasound/dmasound_core.c index 8c0f8a9ee0ba..fc9bcd47d6a4 100644 --- a/sound/oss/dmasound/dmasound_core.c +++ b/sound/oss/dmasound/dmasound_core.c @@ -420,7 +420,7 @@ static int sq_allocate_buffers(struct sound_queue *sq, int num, int size) return 0; sq->numBufs = num; sq->bufSize = size; - sq->buffers = kmalloc (num * sizeof(char *), GFP_KERNEL); + sq->buffers = kmalloc_array (num, sizeof(char *), GFP_KERNEL); if (!sq->buffers) return -ENOMEM; for (i = 0; i < num; i++) { diff --git a/sound/pci/cs46xx/cs46xx_lib.c b/sound/pci/cs46xx/cs46xx_lib.c index ed1251c5f449..146e1a3498c7 100644 --- a/sound/pci/cs46xx/cs46xx_lib.c +++ b/sound/pci/cs46xx/cs46xx_lib.c @@ -460,7 +460,7 @@ static int load_firmware(struct snd_cs46xx *chip, entry->size = le32_to_cpu(fwdat[fwlen++]); if (fwlen + entry->size > fwsize) goto error_inval; - entry->data = kmalloc(entry->size * 4, GFP_KERNEL); + entry->data = kmalloc_array(entry->size, 4, GFP_KERNEL); if (!entry->data) goto error; memcpy_le32(entry->data, &fwdat[fwlen], entry->size * 4); @@ -4036,8 +4036,9 @@ int snd_cs46xx_create(struct snd_card *card, snd_cs46xx_proc_init(card, chip); #ifdef CONFIG_PM_SLEEP - chip->saved_regs = kmalloc(sizeof(*chip->saved_regs) * - ARRAY_SIZE(saved_regs), GFP_KERNEL); + chip->saved_regs = kmalloc_array(ARRAY_SIZE(saved_regs), + sizeof(*chip->saved_regs), + GFP_KERNEL); if (!chip->saved_regs) { snd_cs46xx_free(chip); return -ENOMEM; diff --git a/sound/pci/cs46xx/dsp_spos.c b/sound/pci/cs46xx/dsp_spos.c index c44eadef64ae..99d5a02f9169 100644 --- a/sound/pci/cs46xx/dsp_spos.c +++ b/sound/pci/cs46xx/dsp_spos.c @@ -243,7 +243,9 @@ struct dsp_spos_instance *cs46xx_dsp_spos_create (struct snd_cs46xx * chip) ins->symbol_table.symbols = vmalloc(sizeof(struct dsp_symbol_entry) * DSP_MAX_SYMBOLS); ins->code.data = kmalloc(DSP_CODE_BYTE_SIZE, GFP_KERNEL); - ins->modules = kmalloc(sizeof(struct dsp_module_desc) * DSP_MAX_MODULES, GFP_KERNEL); + ins->modules = kmalloc_array(DSP_MAX_MODULES, + sizeof(struct dsp_module_desc), + GFP_KERNEL); if (!ins->symbol_table.symbols || !ins->code.data || !ins->modules) { cs46xx_dsp_spos_destroy(chip); goto error; diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c index b45a01bb73e5..af1085d946ec 100644 --- a/sound/pci/emu10k1/emufx.c +++ b/sound/pci/emu10k1/emufx.c @@ -2683,12 +2683,12 @@ int snd_emu10k1_efx_alloc_pm_buffer(struct snd_emu10k1 *emu) int len; len = emu->audigy ? 0x200 : 0x100; - emu->saved_gpr = kmalloc(len * 4, GFP_KERNEL); + emu->saved_gpr = kmalloc_array(len, 4, GFP_KERNEL); if (! emu->saved_gpr) return -ENOMEM; len = emu->audigy ? 0x100 : 0xa0; - emu->tram_val_saved = kmalloc(len * 4, GFP_KERNEL); - emu->tram_addr_saved = kmalloc(len * 4, GFP_KERNEL); + emu->tram_val_saved = kmalloc_array(len, 4, GFP_KERNEL); + emu->tram_addr_saved = kmalloc_array(len, 4, GFP_KERNEL); if (! emu->tram_val_saved || ! emu->tram_addr_saved) return -ENOMEM; len = emu->audigy ? 2 * 1024 : 2 * 512; diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 08151f3c0b13..d91c87e41756 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -158,7 +158,7 @@ static int read_and_add_raw_conns(struct hda_codec *codec, hda_nid_t nid) len = snd_hda_get_raw_connections(codec, nid, list, ARRAY_SIZE(list)); if (len == -ENOSPC) { len = snd_hda_get_num_raw_conns(codec, nid); - result = kmalloc(sizeof(hda_nid_t) * len, GFP_KERNEL); + result = kmalloc_array(len, sizeof(hda_nid_t), GFP_KERNEL); if (!result) return -ENOMEM; len = snd_hda_get_raw_connections(codec, nid, result, len); @@ -438,7 +438,7 @@ static int read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node) int i; hda_nid_t nid; - codec->wcaps = kmalloc(codec->core.num_nodes * 4, GFP_KERNEL); + codec->wcaps = kmalloc_array(codec->core.num_nodes, 4, GFP_KERNEL); if (!codec->wcaps) return -ENOMEM; nid = codec->core.start_nid; diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c index 033aa84365b9..c6b778b2580c 100644 --- a/sound/pci/hda/hda_proc.c +++ b/sound/pci/hda/hda_proc.c @@ -825,8 +825,9 @@ static void print_codec_info(struct snd_info_entry *entry, if (wid_caps & AC_WCAP_CONN_LIST) { conn_len = snd_hda_get_num_raw_conns(codec, nid); if (conn_len > 0) { - conn = kmalloc(sizeof(hda_nid_t) * conn_len, - GFP_KERNEL); + conn = kmalloc_array(conn_len, + sizeof(hda_nid_t), + GFP_KERNEL); if (!conn) return; if (snd_hda_get_raw_connections(codec, nid, conn, diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c index 3a1c0b8b4ea2..c488c5afa195 100644 --- a/sound/pci/via82xx.c +++ b/sound/pci/via82xx.c @@ -439,7 +439,9 @@ static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substre return -ENOMEM; } if (! dev->idx_table) { - dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); + dev->idx_table = kmalloc_array(VIA_TABLE_SIZE, + sizeof(*dev->idx_table), + GFP_KERNEL); if (! dev->idx_table) return -ENOMEM; } diff --git a/sound/pci/via82xx_modem.c b/sound/pci/via82xx_modem.c index 8a69221c1b86..b13c8688cc8d 100644 --- a/sound/pci/via82xx_modem.c +++ b/sound/pci/via82xx_modem.c @@ -292,7 +292,9 @@ static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substre return -ENOMEM; } if (! dev->idx_table) { - dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); + dev->idx_table = kmalloc_array(VIA_TABLE_SIZE, + sizeof(*dev->idx_table), + GFP_KERNEL); if (! dev->idx_table) return -ENOMEM; } diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c index 8ca2e41e5827..6f81396aadc9 100644 --- a/sound/pci/ymfpci/ymfpci_main.c +++ b/sound/pci/ymfpci/ymfpci_main.c @@ -2435,8 +2435,8 @@ int snd_ymfpci_create(struct snd_card *card, goto free_chip; #ifdef CONFIG_PM_SLEEP - chip->saved_regs = kmalloc(YDSXGR_NUM_SAVED_REGS * sizeof(u32), - GFP_KERNEL); + chip->saved_regs = kmalloc_array(YDSXGR_NUM_SAVED_REGS, sizeof(u32), + GFP_KERNEL); if (chip->saved_regs == NULL) { err = -ENOMEM; goto free_chip; diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c index f13ef334c0d7..9037a35b931d 100644 --- a/sound/soc/codecs/wm8904.c +++ b/sound/soc/codecs/wm8904.c @@ -2023,8 +2023,9 @@ static void wm8904_handle_pdata(struct snd_soc_component *component) wm8904_get_drc_enum, wm8904_put_drc_enum); /* We need an array of texts for the enum API */ - wm8904->drc_texts = kmalloc(sizeof(char *) - * pdata->num_drc_cfgs, GFP_KERNEL); + wm8904->drc_texts = kmalloc_array(pdata->num_drc_cfgs, + sizeof(char *), + GFP_KERNEL); if (!wm8904->drc_texts) return; diff --git a/sound/soc/codecs/wm8958-dsp2.c b/sound/soc/codecs/wm8958-dsp2.c index 8d495220fa25..108e8bf42a34 100644 --- a/sound/soc/codecs/wm8958-dsp2.c +++ b/sound/soc/codecs/wm8958-dsp2.c @@ -932,8 +932,9 @@ void wm8958_dsp2_init(struct snd_soc_component *component) }; /* We need an array of texts for the enum API */ - wm8994->mbc_texts = kmalloc(sizeof(char *) - * pdata->num_mbc_cfgs, GFP_KERNEL); + wm8994->mbc_texts = kmalloc_array(pdata->num_mbc_cfgs, + sizeof(char *), + GFP_KERNEL); if (!wm8994->mbc_texts) return; @@ -957,8 +958,9 @@ void wm8958_dsp2_init(struct snd_soc_component *component) }; /* We need an array of texts for the enum API */ - wm8994->vss_texts = kmalloc(sizeof(char *) - * pdata->num_vss_cfgs, GFP_KERNEL); + wm8994->vss_texts = kmalloc_array(pdata->num_vss_cfgs, + sizeof(char *), + GFP_KERNEL); if (!wm8994->vss_texts) return; @@ -983,8 +985,9 @@ void wm8958_dsp2_init(struct snd_soc_component *component) }; /* We need an array of texts for the enum API */ - wm8994->vss_hpf_texts = kmalloc(sizeof(char *) - * pdata->num_vss_hpf_cfgs, GFP_KERNEL); + wm8994->vss_hpf_texts = kmalloc_array(pdata->num_vss_hpf_cfgs, + sizeof(char *), + GFP_KERNEL); if (!wm8994->vss_hpf_texts) return; @@ -1010,8 +1013,9 @@ void wm8958_dsp2_init(struct snd_soc_component *component) }; /* We need an array of texts for the enum API */ - wm8994->enh_eq_texts = kmalloc(sizeof(char *) - * pdata->num_enh_eq_cfgs, GFP_KERNEL); + wm8994->enh_eq_texts = kmalloc_array(pdata->num_enh_eq_cfgs, + sizeof(char *), + GFP_KERNEL); if (!wm8994->enh_eq_texts) return; diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c index fb1c1eac0b5e..f35d29f49ffe 100644 --- a/sound/usb/caiaq/audio.c +++ b/sound/usb/caiaq/audio.c @@ -728,7 +728,7 @@ static struct urb **alloc_urbs(struct snd_usb_caiaqdev *cdev, int dir, int *ret) usb_sndisocpipe(usb_dev, ENDPOINT_PLAYBACK) : usb_rcvisocpipe(usb_dev, ENDPOINT_CAPTURE); - urbs = kmalloc(N_URBS * sizeof(*urbs), GFP_KERNEL); + urbs = kmalloc_array(N_URBS, sizeof(*urbs), GFP_KERNEL); if (!urbs) { *ret = -ENOMEM; return NULL; @@ -742,7 +742,8 @@ static struct urb **alloc_urbs(struct snd_usb_caiaqdev *cdev, int dir, int *ret) } urbs[i]->transfer_buffer = - kmalloc(FRAMES_PER_URB * BYTES_PER_FRAME, GFP_KERNEL); + kmalloc_array(BYTES_PER_FRAME, FRAMES_PER_URB, + GFP_KERNEL); if (!urbs[i]->transfer_buffer) { *ret = -ENOMEM; return urbs; @@ -857,7 +858,7 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *cdev) &snd_usb_caiaq_ops); cdev->data_cb_info = - kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS, + kmalloc_array(N_URBS, sizeof(struct snd_usb_caiaq_cb_info), GFP_KERNEL); if (!cdev->data_cb_info) diff --git a/sound/usb/format.c b/sound/usb/format.c index 49e7ec6d2399..1f7a74a77ea3 100644 --- a/sound/usb/format.c +++ b/sound/usb/format.c @@ -188,7 +188,8 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof */ int r, idx; - fp->rate_table = kmalloc(sizeof(int) * nr_rates, GFP_KERNEL); + fp->rate_table = kmalloc_array(nr_rates, sizeof(int), + GFP_KERNEL); if (fp->rate_table == NULL) return -ENOMEM; @@ -362,7 +363,7 @@ static int parse_audio_format_rates_v2v3(struct snd_usb_audio *chip, goto err_free; } - fp->rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL); + fp->rate_table = kmalloc_array(fp->nr_rates, sizeof(int), GFP_KERNEL); if (!fp->rate_table) { ret = -ENOMEM; goto err_free; diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c index b3854f8c0c67..72c6f8e82a7e 100644 --- a/sound/usb/line6/pcm.c +++ b/sound/usb/line6/pcm.c @@ -158,8 +158,10 @@ static int line6_buffer_acquire(struct snd_line6_pcm *line6pcm, /* Invoked multiple times in a row so allocate once only */ if (!test_and_set_bit(type, &pstr->opened) && !pstr->buffer) { - pstr->buffer = kmalloc(line6pcm->line6->iso_buffers * - LINE6_ISO_PACKETS * pkt_size, GFP_KERNEL); + pstr->buffer = + kmalloc(array3_size(line6pcm->line6->iso_buffers, + LINE6_ISO_PACKETS, pkt_size), + GFP_KERNEL); if (!pstr->buffer) return -ENOMEM; } diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 898afd3001ea..8c3568d8d03b 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -2515,7 +2515,7 @@ static int parse_audio_selector_unit(struct mixer_build *state, int unitid, cval->control = (desc->bDescriptorSubtype == UAC2_CLOCK_SELECTOR) ? UAC2_CX_CLOCK_SELECTOR : UAC2_SU_SELECTOR; - namelist = kmalloc(sizeof(char *) * desc->bNrInPins, GFP_KERNEL); + namelist = kmalloc_array(desc->bNrInPins, sizeof(char *), GFP_KERNEL); if (!namelist) { kfree(cval); return -ENOMEM; diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index 78d1cad08a0a..160f52c4871b 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -1123,7 +1123,7 @@ static int snd_usb_pcm_check_knot(struct snd_pcm_runtime *runtime, return 0; subs->rate_list.list = rate_list = - kmalloc(sizeof(int) * count, GFP_KERNEL); + kmalloc_array(count, sizeof(int), GFP_KERNEL); if (!subs->rate_list.list) return -ENOMEM; subs->rate_list.count = count; diff --git a/sound/usb/usx2y/usbusx2y.c b/sound/usb/usx2y/usbusx2y.c index 0ddf29267d70..da4a5a541512 100644 --- a/sound/usb/usx2y/usbusx2y.c +++ b/sound/usb/usx2y/usbusx2y.c @@ -266,7 +266,9 @@ int usX2Y_AsyncSeq04_init(struct usX2Ydev *usX2Y) int err = 0, i; - if (NULL == (usX2Y->AS04.buffer = kmalloc(URB_DataLen_AsyncSeq*URBS_AsyncSeq, GFP_KERNEL))) { + usX2Y->AS04.buffer = kmalloc_array(URBS_AsyncSeq, + URB_DataLen_AsyncSeq, GFP_KERNEL); + if (NULL == usX2Y->AS04.buffer) { err = -ENOMEM; } else for (i = 0; i < URBS_AsyncSeq; ++i) { diff --git a/sound/usb/usx2y/usbusx2yaudio.c b/sound/usb/usx2y/usbusx2yaudio.c index 345e439aa95b..2b833054e3b0 100644 --- a/sound/usb/usx2y/usbusx2yaudio.c +++ b/sound/usb/usx2y/usbusx2yaudio.c @@ -436,7 +436,9 @@ static int usX2Y_urbs_allocate(struct snd_usX2Y_substream *subs) } if (!is_playback && !(*purb)->transfer_buffer) { /* allocate a capture buffer per urb */ - (*purb)->transfer_buffer = kmalloc(subs->maxpacksize * nr_of_packs(), GFP_KERNEL); + (*purb)->transfer_buffer = + kmalloc_array(subs->maxpacksize, + nr_of_packs(), GFP_KERNEL); if (NULL == (*purb)->transfer_buffer) { usX2Y_urbs_release(subs); return -ENOMEM; @@ -662,7 +664,8 @@ static int usX2Y_rate_set(struct usX2Ydev *usX2Y, int rate) err = -ENOMEM; goto cleanup; } - usbdata = kmalloc(sizeof(int) * NOOF_SETRATE_URBS, GFP_KERNEL); + usbdata = kmalloc_array(NOOF_SETRATE_URBS, sizeof(int), + GFP_KERNEL); if (NULL == usbdata) { err = -ENOMEM; goto cleanup; -- cgit v1.2.3 From 6396bb221514d2876fd6dc0aa2a1f240d99b37bb Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 12 Jun 2018 14:03:40 -0700 Subject: treewide: kzalloc() -> kcalloc() The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook --- arch/arm/mach-footbridge/dc21285.c | 2 +- arch/arm/mach-ixp4xx/common-pci.c | 2 +- arch/arm/mach-omap1/mcbsp.c | 2 +- arch/arm/mach-omap2/hsmmc.c | 2 +- arch/arm/mach-omap2/omap_device.c | 4 +- arch/arm/mach-omap2/prm_common.c | 9 ++-- arch/arm/mach-vexpress/spc.c | 2 +- arch/arm/mm/dma-mapping.c | 4 +- arch/arm64/kernel/armv8_deprecated.c | 4 +- arch/arm64/mm/context.c | 2 +- arch/ia64/kernel/topology.c | 6 +-- arch/ia64/sn/kernel/io_common.c | 2 +- arch/ia64/sn/pci/pcibr/pcibr_provider.c | 2 +- arch/mips/alchemy/common/clock.c | 2 +- arch/mips/alchemy/common/dbdma.c | 2 +- arch/mips/alchemy/common/platform.c | 4 +- arch/mips/alchemy/devboards/platform.c | 4 +- arch/mips/bmips/dma.c | 2 +- arch/mips/txx9/rbtx4939/setup.c | 2 +- arch/powerpc/kernel/vdso.c | 4 +- arch/powerpc/mm/numa.c | 2 +- arch/powerpc/net/bpf_jit_comp.c | 2 +- arch/powerpc/net/bpf_jit_comp64.c | 2 +- arch/powerpc/oprofile/cell/spu_profiler.c | 4 +- arch/powerpc/platforms/4xx/pci.c | 2 +- arch/powerpc/platforms/powernv/opal-sysparam.c | 8 ++-- arch/powerpc/sysdev/mpic.c | 4 +- arch/powerpc/sysdev/xive/native.c | 2 +- arch/s390/appldata/appldata_base.c | 2 +- arch/s390/kernel/vdso.c | 4 +- arch/sh/drivers/dma/dmabrg.c | 2 +- arch/sh/drivers/pci/pcie-sh7786.c | 2 +- arch/sparc/kernel/sys_sparc_64.c | 3 +- arch/x86/events/amd/iommu.c | 2 +- arch/x86/events/intel/uncore.c | 2 +- arch/x86/kernel/cpu/mcheck/mce.c | 2 +- arch/x86/kernel/cpu/mcheck/mce_amd.c | 2 +- arch/x86/kernel/cpu/mtrr/if.c | 2 +- arch/x86/kernel/hpet.c | 2 +- arch/x86/pci/xen.c | 2 +- arch/x86/platform/uv/uv_time.c | 2 +- block/bio.c | 3 +- block/blk-tag.c | 4 +- drivers/acpi/acpi_platform.c | 2 +- drivers/acpi/sysfs.c | 6 +-- drivers/android/binder_alloc.c | 4 +- drivers/ata/libata-core.c | 2 +- drivers/ata/libata-pmp.c | 2 +- drivers/atm/fore200e.c | 3 +- drivers/atm/iphase.c | 2 +- drivers/block/drbd/drbd_main.c | 3 +- drivers/block/null_blk.c | 9 ++-- drivers/block/ps3vram.c | 5 ++- drivers/block/rsxx/core.c | 3 +- drivers/block/rsxx/dma.c | 2 +- drivers/block/xen-blkback/xenbus.c | 3 +- drivers/block/xen-blkfront.c | 23 ++++++---- drivers/char/agp/amd-k7-agp.c | 3 +- drivers/char/agp/ati-agp.c | 3 +- drivers/char/agp/sworks-agp.c | 2 +- drivers/char/ipmi/ipmi_ssif.c | 3 +- drivers/clk/renesas/clk-r8a7740.c | 2 +- drivers/clk/renesas/clk-r8a7779.c | 2 +- drivers/clk/renesas/clk-rcar-gen2.c | 2 +- drivers/clk/renesas/clk-rz.c | 2 +- drivers/clk/st/clkgen-fsyn.c | 2 +- drivers/clk/st/clkgen-pll.c | 2 +- drivers/clk/sunxi/clk-usb.c | 2 +- drivers/clk/tegra/clk.c | 7 +-- drivers/clk/ti/apll.c | 2 +- drivers/clk/ti/divider.c | 4 +- drivers/clk/ti/dpll.c | 2 +- drivers/clocksource/sh_cmt.c | 2 +- drivers/clocksource/sh_mtu2.c | 2 +- drivers/clocksource/sh_tmu.c | 2 +- drivers/cpufreq/acpi-cpufreq.c | 4 +- drivers/cpufreq/arm_big_little.c | 2 +- drivers/cpufreq/cppc_cpufreq.c | 3 +- drivers/cpufreq/ia64-acpi-cpufreq.c | 4 +- drivers/cpufreq/longhaul.c | 4 +- drivers/cpufreq/pxa3xx-cpufreq.c | 2 +- drivers/cpufreq/s3c24xx-cpufreq.c | 2 +- drivers/cpufreq/sfi-cpufreq.c | 4 +- drivers/cpufreq/spear-cpufreq.c | 2 +- drivers/crypto/amcc/crypto4xx_core.c | 8 ++-- drivers/crypto/inside-secure/safexcel_hash.c | 2 +- drivers/crypto/marvell/hash.c | 2 +- drivers/crypto/n2_core.c | 4 +- drivers/crypto/qat/qat_common/qat_uclo.c | 5 ++- drivers/dma/ioat/init.c | 4 +- drivers/dma/mv_xor.c | 2 +- drivers/dma/pl330.c | 4 +- drivers/dma/sh/shdma-base.c | 5 ++- drivers/dma/xilinx/zynqmp_dma.c | 2 +- drivers/edac/amd64_edac.c | 2 +- drivers/edac/i7core_edac.c | 2 +- drivers/extcon/extcon.c | 24 ++++++----- drivers/firmware/dell_rbu.c | 2 +- drivers/firmware/efi/capsule.c | 2 +- drivers/firmware/efi/runtime-map.c | 2 +- drivers/fmc/fmc-sdb.c | 4 +- drivers/gpio/gpio-ml-ioh.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 6 +-- drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_test.c | 2 +- drivers/gpu/drm/amd/amdgpu/atom.c | 2 +- drivers/gpu/drm/amd/amdgpu/ci_dpm.c | 9 ++-- drivers/gpu/drm/amd/amdgpu/kv_dpm.c | 5 ++- drivers/gpu/drm/amd/amdgpu/si_dpm.c | 9 ++-- .../drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 2 +- drivers/gpu/drm/amd/display/dc/basics/logger.c | 2 +- drivers/gpu/drm/amd/display/dc/basics/vector.c | 4 +- .../gpu/drm/amd/display/dc/dce/dce_clock_source.c | 6 ++- drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c | 3 +- .../drm/amd/display/modules/color/color_gamma.c | 10 +++-- .../drm/amd/display/modules/freesync/freesync.c | 3 +- drivers/gpu/drm/amd/display/modules/stats/stats.c | 12 +++--- drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c | 2 +- drivers/gpu/drm/i915/gvt/vgpu.c | 2 +- drivers/gpu/drm/i915/intel_hdcp.c | 2 +- drivers/gpu/drm/i915/selftests/intel_uncore.c | 2 +- drivers/gpu/drm/nouveau/nvif/fifo.c | 4 +- drivers/gpu/drm/nouveau/nvif/object.c | 2 +- drivers/gpu/drm/nouveau/nvkm/core/event.c | 3 +- drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c | 2 +- drivers/gpu/drm/omapdrm/omap_gem.c | 2 +- drivers/gpu/drm/radeon/atom.c | 2 +- drivers/gpu/drm/radeon/btc_dpm.c | 4 +- drivers/gpu/drm/radeon/ci_dpm.c | 9 ++-- drivers/gpu/drm/radeon/kv_dpm.c | 5 ++- drivers/gpu/drm/radeon/ni_dpm.c | 9 ++-- drivers/gpu/drm/radeon/r600_dpm.c | 2 +- drivers/gpu/drm/radeon/radeon_atombios.c | 39 ++++++++++------- drivers/gpu/drm/radeon/radeon_combios.c | 9 ++-- drivers/gpu/drm/radeon/radeon_test.c | 2 +- drivers/gpu/drm/radeon/rs780_dpm.c | 5 ++- drivers/gpu/drm/radeon/rv6xx_dpm.c | 5 ++- drivers/gpu/drm/radeon/rv770_dpm.c | 5 ++- drivers/gpu/drm/radeon/si_dpm.c | 9 ++-- drivers/gpu/drm/radeon/sumo_dpm.c | 5 ++- drivers/gpu/drm/radeon/trinity_dpm.c | 5 ++- drivers/gpu/drm/selftests/test-drm_mm.c | 4 +- drivers/hid/hid-debug.c | 4 +- drivers/hv/hv.c | 2 +- drivers/hv/ring_buffer.c | 2 +- drivers/hwmon/acpi_power_meter.c | 7 +-- drivers/hwmon/coretemp.c | 2 +- drivers/hwmon/i5k_amb.c | 5 ++- drivers/hwmon/ibmpex.c | 2 +- drivers/i2c/busses/i2c-amd756-s4882.c | 4 +- drivers/i2c/busses/i2c-nforce2-s4985.c | 4 +- drivers/i2c/busses/i2c-nforce2.c | 2 +- drivers/i2c/i2c-stub.c | 5 ++- drivers/ide/hpt366.c | 2 +- drivers/ide/it821x.c | 2 +- drivers/iio/imu/adis_buffer.c | 2 +- drivers/iio/inkern.c | 2 +- drivers/infiniband/core/cache.c | 5 ++- drivers/infiniband/core/device.c | 4 +- drivers/infiniband/core/iwpm_util.c | 10 +++-- drivers/infiniband/hw/cxgb3/cxio_hal.c | 4 +- drivers/infiniband/hw/cxgb4/device.c | 7 +-- drivers/infiniband/hw/cxgb4/qp.c | 8 ++-- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 +- drivers/infiniband/hw/mlx4/mad.c | 3 +- drivers/infiniband/hw/mthca/mthca_mr.c | 2 +- drivers/infiniband/hw/mthca/mthca_profile.c | 2 +- drivers/infiniband/hw/nes/nes_mgt.c | 3 +- drivers/infiniband/hw/nes/nes_verbs.c | 5 ++- drivers/infiniband/hw/ocrdma/ocrdma_hw.c | 2 +- drivers/infiniband/hw/ocrdma/ocrdma_main.c | 11 ++--- drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 12 +++--- drivers/infiniband/hw/qedr/main.c | 4 +- drivers/infiniband/hw/qedr/verbs.c | 4 +- drivers/infiniband/hw/qib/qib_iba7322.c | 5 ++- drivers/infiniband/hw/qib/qib_init.c | 4 +- drivers/infiniband/hw/usnic/usnic_ib_qp_grp.c | 2 +- drivers/infiniband/hw/usnic/usnic_vnic.c | 2 +- drivers/infiniband/ulp/ipoib/ipoib_main.c | 7 +-- drivers/infiniband/ulp/isert/ib_isert.c | 5 ++- drivers/input/keyboard/omap4-keypad.c | 3 +- drivers/iommu/dmar.c | 2 +- drivers/iommu/intel-iommu.c | 4 +- drivers/iommu/omap-iommu.c | 2 +- drivers/ipack/carriers/tpci200.c | 4 +- drivers/irqchip/irq-alpine-msi.c | 3 +- drivers/irqchip/irq-gic-v2m.c | 2 +- drivers/irqchip/irq-gic-v3-its.c | 15 ++++--- drivers/irqchip/irq-gic-v3.c | 5 ++- drivers/irqchip/irq-partition-percpu.c | 2 +- drivers/irqchip/irq-s3c24xx.c | 2 +- drivers/isdn/capi/capi.c | 2 +- drivers/isdn/gigaset/capi.c | 2 +- drivers/isdn/gigaset/i4l.c | 2 +- drivers/isdn/hardware/avm/b1.c | 2 +- drivers/isdn/hisax/fsm.c | 4 +- drivers/isdn/i4l/isdn_common.c | 4 +- drivers/isdn/mISDN/fsm.c | 6 ++- drivers/lightnvm/pblk-init.c | 2 +- drivers/mailbox/pcc.c | 3 +- drivers/md/bcache/super.c | 7 +-- drivers/md/dm-crypt.c | 5 ++- drivers/md/md-bitmap.c | 2 +- drivers/md/md-cluster.c | 6 +-- drivers/md/md-multipath.c | 3 +- drivers/md/raid0.c | 10 +++-- drivers/md/raid1.c | 9 ++-- drivers/md/raid10.c | 13 +++--- drivers/md/raid5.c | 15 ++++--- drivers/media/dvb-frontends/dib7000p.c | 4 +- drivers/media/dvb-frontends/dib8000.c | 4 +- drivers/media/dvb-frontends/dib9000.c | 4 +- drivers/media/usb/au0828/au0828-video.c | 6 +-- drivers/media/usb/cx231xx/cx231xx-core.c | 8 ++-- drivers/media/usb/cx231xx/cx231xx-vbi.c | 4 +- drivers/media/usb/go7007/go7007-fw.c | 2 +- drivers/media/usb/pvrusb2/pvrusb2-hdw.c | 2 +- drivers/media/usb/pvrusb2/pvrusb2-std.c | 2 +- drivers/media/usb/stk1160/stk1160-video.c | 6 +-- drivers/media/usb/stkwebcam/stk-webcam.c | 5 ++- drivers/media/usb/usbtv/usbtv-video.c | 2 +- drivers/mfd/cros_ec_dev.c | 7 +-- drivers/mfd/mfd-core.c | 2 +- drivers/mfd/timberdale.c | 4 +- drivers/misc/altera-stapl/altera.c | 6 +-- drivers/misc/cxl/guest.c | 2 +- drivers/misc/cxl/of.c | 2 +- drivers/misc/genwqe/card_ddcb.c | 9 ++-- drivers/misc/sgi-xp/xpc_main.c | 8 ++-- drivers/misc/sgi-xp/xpc_partition.c | 2 +- drivers/misc/sgi-xp/xpnet.c | 5 ++- drivers/misc/sram.c | 2 +- drivers/mtd/ar7part.c | 2 +- drivers/mtd/bcm47xxpart.c | 2 +- drivers/mtd/chips/cfi_cmdset_0001.c | 5 ++- drivers/mtd/chips/cfi_cmdset_0002.c | 2 +- drivers/mtd/devices/docg3.c | 2 +- drivers/mtd/maps/physmap_of_core.c | 4 +- drivers/mtd/nand/onenand/onenand_base.c | 6 ++- drivers/mtd/ofpart.c | 4 +- drivers/mtd/parsers/parser_trx.c | 2 +- drivers/mtd/parsers/sharpslpart.c | 5 ++- drivers/mtd/sm_ftl.c | 4 +- drivers/mtd/tests/pagetest.c | 2 +- drivers/mtd/ubi/wl.c | 2 +- drivers/net/bonding/bond_main.c | 2 +- drivers/net/can/grcan.c | 4 +- drivers/net/can/slcan.c | 2 +- drivers/net/ethernet/broadcom/bcm63xx_enet.c | 4 +- drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c | 13 +++--- drivers/net/ethernet/broadcom/cnic.c | 10 ++--- drivers/net/ethernet/broadcom/tg3.c | 5 ++- drivers/net/ethernet/brocade/bna/bnad.c | 4 +- drivers/net/ethernet/calxeda/xgmac.c | 4 +- drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 4 +- drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c | 4 +- drivers/net/ethernet/cortina/gemini.c | 4 +- drivers/net/ethernet/hisilicon/hns/hns_enet.c | 3 +- drivers/net/ethernet/intel/e1000e/netdev.c | 2 +- drivers/net/ethernet/intel/igb/igb_main.c | 7 +-- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 4 +- drivers/net/ethernet/jme.c | 10 +++-- drivers/net/ethernet/mellanox/mlx4/alloc.c | 4 +- drivers/net/ethernet/mellanox/mlx4/cmd.c | 15 ++++--- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 20 +++++---- drivers/net/ethernet/mellanox/mlx4/main.c | 5 ++- .../net/ethernet/mellanox/mlx4/resource_tracker.c | 16 +++---- .../net/ethernet/mellanox/mlx5/core/fpga/ipsec.c | 2 +- .../net/ethernet/mellanox/mlx5/core/lib/clock.c | 5 ++- .../net/ethernet/mellanox/mlxsw/spectrum_qdisc.c | 3 +- drivers/net/ethernet/micrel/ksz884x.c | 2 +- drivers/net/ethernet/neterion/vxge/vxge-config.c | 8 ++-- drivers/net/ethernet/neterion/vxge/vxge-main.c | 4 +- drivers/net/ethernet/pasemi/pasemi_mac.c | 10 +++-- drivers/net/ethernet/qlogic/qed/qed_debug.c | 5 ++- drivers/net/ethernet/qlogic/qed/qed_dev.c | 16 +++---- drivers/net/ethernet/qlogic/qed/qed_init_ops.c | 4 +- drivers/net/ethernet/qlogic/qed/qed_l2.c | 2 +- drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 10 +++-- .../ethernet/qlogic/qlcnic/qlcnic_sriov_common.c | 8 ++-- drivers/net/ethernet/socionext/netsec.c | 2 +- drivers/net/ethernet/toshiba/ps3_gelic_wireless.c | 5 ++- drivers/net/phy/dp83640.c | 5 ++- drivers/net/slip/slip.c | 2 +- drivers/net/team/team.c | 2 +- drivers/net/usb/smsc95xx.c | 2 +- drivers/net/virtio_net.c | 8 ++-- drivers/net/wan/fsl_ucc_hdlc.c | 6 ++- drivers/net/wireless/ath/ath10k/htt_rx.c | 2 +- drivers/net/wireless/ath/ath10k/wmi-tlv.c | 2 +- drivers/net/wireless/ath/ath6kl/cfg80211.c | 2 +- drivers/net/wireless/ath/carl9170/main.c | 7 +-- drivers/net/wireless/broadcom/b43/phy_n.c | 2 +- drivers/net/wireless/broadcom/b43legacy/main.c | 4 +- .../wireless/broadcom/brcm80211/brcmfmac/msgbuf.c | 5 ++- .../net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 2 +- .../wireless/broadcom/brcm80211/brcmsmac/main.c | 7 +-- drivers/net/wireless/intel/iwlegacy/common.c | 13 +++--- drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 2 +- drivers/net/wireless/intersil/p54/eeprom.c | 12 +++--- drivers/net/wireless/intersil/prism54/oid_mgt.c | 2 +- .../net/wireless/marvell/mwifiex/11n_rxreorder.c | 4 +- drivers/net/wireless/marvell/mwifiex/sdio.c | 9 ++-- drivers/net/wireless/quantenna/qtnfmac/commands.c | 2 +- drivers/net/wireless/ralink/rt2x00/rt2x00debug.c | 2 +- drivers/net/wireless/realtek/rtlwifi/efuse.c | 4 +- drivers/net/wireless/realtek/rtlwifi/usb.c | 2 +- drivers/net/wireless/st/cw1200/queue.c | 10 ++--- drivers/net/wireless/st/cw1200/scan.c | 6 +-- drivers/nvmem/rockchip-efuse.c | 6 ++- drivers/nvmem/sunxi_sid.c | 2 +- drivers/of/platform.c | 2 +- drivers/of/unittest.c | 2 +- drivers/opp/ti-opp-supply.c | 4 +- drivers/pci/msi.c | 4 +- drivers/pci/pci-sysfs.c | 2 +- drivers/pcmcia/pd6729.c | 2 +- drivers/pinctrl/bcm/pinctrl-bcm2835.c | 4 +- drivers/pinctrl/freescale/pinctrl-mxs.c | 2 +- drivers/pinctrl/pinctrl-lantiq.c | 3 +- drivers/pinctrl/sirf/pinctrl-sirf.c | 2 +- drivers/pinctrl/spear/pinctrl-spear.c | 2 +- drivers/pinctrl/sunxi/pinctrl-sunxi.c | 2 +- drivers/pinctrl/vt8500/pinctrl-wmt.c | 2 +- drivers/platform/x86/alienware-wmi.c | 6 +-- drivers/platform/x86/intel_ips.c | 12 +++--- drivers/platform/x86/panasonic-laptop.c | 2 +- drivers/platform/x86/thinkpad_acpi.c | 2 +- drivers/power/supply/wm97xx_battery.c | 2 +- drivers/power/supply/z2_battery.c | 2 +- drivers/powercap/powercap_sys.c | 9 ++-- drivers/rapidio/rio-scan.c | 6 +-- drivers/regulator/s2mps11.c | 2 +- drivers/s390/block/dcssblk.c | 6 +-- drivers/s390/char/keyboard.c | 2 +- drivers/s390/char/vmur.c | 2 +- drivers/s390/char/zcore.c | 2 +- drivers/s390/cio/qdio_setup.c | 2 +- drivers/s390/cio/qdio_thinint.c | 5 ++- drivers/s390/crypto/pkey_api.c | 2 +- drivers/s390/net/ctcm_main.c | 2 +- drivers/s390/net/qeth_core_main.c | 27 ++++++------ drivers/scsi/BusLogic.c | 2 +- drivers/scsi/aacraid/linit.c | 4 +- drivers/scsi/aic7xxx/aic7xxx_core.c | 4 +- drivers/scsi/aic94xx/aic94xx_hwi.c | 5 ++- drivers/scsi/aic94xx/aic94xx_init.c | 2 +- drivers/scsi/be2iscsi/be_main.c | 40 +++++++++-------- drivers/scsi/bfa/bfad_attr.c | 2 +- drivers/scsi/bfa/bfad_bsg.c | 5 ++- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 2 +- drivers/scsi/bnx2fc/bnx2fc_io.c | 8 ++-- drivers/scsi/csiostor/csio_wr.c | 4 +- drivers/scsi/esas2r/esas2r_init.c | 11 ++--- drivers/scsi/hpsa.c | 22 +++++----- drivers/scsi/ipr.c | 10 +++-- drivers/scsi/libsas/sas_expander.c | 2 +- drivers/scsi/lpfc/lpfc_init.c | 7 +-- drivers/scsi/lpfc/lpfc_sli.c | 50 ++++++++++------------ drivers/scsi/lpfc/lpfc_vport.c | 2 +- drivers/scsi/megaraid/megaraid_sas_base.c | 8 ++-- drivers/scsi/megaraid/megaraid_sas_fusion.c | 2 +- drivers/scsi/osst.c | 2 +- drivers/scsi/pm8001/pm8001_ctl.c | 2 +- drivers/scsi/pmcraid.c | 5 ++- drivers/scsi/qedi/qedi_main.c | 2 +- drivers/scsi/qla2xxx/qla_init.c | 10 +++-- drivers/scsi/qla2xxx/qla_isr.c | 5 ++- drivers/scsi/qla2xxx/qla_os.c | 14 +++--- drivers/scsi/qla2xxx/qla_target.c | 10 +++-- drivers/scsi/scsi_debug.c | 2 +- drivers/scsi/ses.c | 2 +- drivers/scsi/sg.c | 2 +- drivers/scsi/smartpqi/smartpqi_init.c | 5 ++- drivers/scsi/st.c | 2 +- drivers/sh/clk/cpg.c | 2 +- drivers/sh/intc/core.c | 10 ++--- drivers/sh/maple/maple.c | 2 +- drivers/slimbus/qcom-ctrl.c | 2 +- drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c | 2 +- drivers/staging/rtlwifi/efuse.c | 4 +- drivers/staging/unisys/visorhba/visorhba_main.c | 2 +- drivers/target/target_core_transport.c | 2 +- drivers/target/target_core_user.c | 5 ++- drivers/thermal/int340x_thermal/acpi_thermal_rel.c | 4 +- .../thermal/int340x_thermal/int340x_thermal_zone.c | 7 +-- drivers/thermal/of-thermal.c | 4 +- drivers/thermal/x86_pkg_temp_thermal.c | 3 +- drivers/tty/ehv_bytechan.c | 2 +- drivers/tty/goldfish.c | 5 ++- drivers/tty/hvc/hvc_iucv.c | 2 +- drivers/tty/serial/pch_uart.c | 2 +- drivers/tty/serial/serial_core.c | 2 +- drivers/tty/serial/sunsab.c | 5 ++- drivers/uio/uio_pruss.c | 2 +- drivers/usb/core/hub.c | 2 +- drivers/usb/dwc2/hcd.c | 11 ++--- drivers/usb/gadget/udc/bdc/bdc_ep.c | 6 +-- drivers/usb/gadget/udc/fsl_udc_core.c | 2 +- drivers/usb/host/ehci-sched.c | 5 ++- drivers/usb/host/imx21-hcd.c | 4 +- drivers/usb/mon/mon_bin.c | 3 +- drivers/usb/renesas_usbhs/mod_gadget.c | 2 +- drivers/usb/renesas_usbhs/pipe.c | 3 +- drivers/usb/wusbcore/wa-rpipe.c | 3 +- drivers/vhost/scsi.c | 15 ++++--- drivers/video/console/sticore.c | 2 +- drivers/video/fbdev/broadsheetfb.c | 2 +- drivers/video/fbdev/core/fbmon.c | 7 +-- drivers/video/fbdev/mmp/fb/mmpfb.c | 4 +- drivers/video/fbdev/omap2/omapfb/dss/manager.c | 4 +- drivers/video/fbdev/omap2/omapfb/dss/overlay.c | 4 +- drivers/video/fbdev/uvesafb.c | 7 +-- drivers/video/of_display_timing.c | 5 ++- drivers/virt/fsl_hypervisor.c | 2 +- drivers/virtio/virtio_pci_common.c | 2 +- drivers/xen/arm-device.c | 6 +-- fs/btrfs/check-integrity.c | 4 +- fs/cifs/cifssmb.c | 2 +- fs/cifs/file.c | 2 +- fs/ext4/extents.c | 8 ++-- fs/nfs/flexfilelayout/flexfilelayout.c | 2 +- fs/nfs/flexfilelayout/flexfilelayoutdev.c | 3 +- fs/nfsd/export.c | 5 ++- fs/ocfs2/journal.c | 2 +- fs/ocfs2/sysfile.c | 9 ++-- fs/overlayfs/namei.c | 2 +- fs/proc/proc_sysctl.c | 2 +- fs/reiserfs/inode.c | 3 +- fs/udf/super.c | 7 +-- kernel/bpf/verifier.c | 2 +- kernel/debug/kdb/kdb_main.c | 2 +- kernel/events/uprobes.c | 3 +- kernel/locking/locktorture.c | 6 ++- kernel/sched/fair.c | 4 +- kernel/sched/rt.c | 4 +- kernel/sysctl.c | 3 +- kernel/trace/ftrace.c | 2 +- kernel/trace/trace.c | 3 +- kernel/workqueue.c | 2 +- lib/lru_cache.c | 2 +- lib/mpi/mpiutil.c | 2 +- mm/slab.c | 3 +- mm/slub.c | 7 +-- net/bridge/br_multicast.c | 2 +- net/can/bcm.c | 3 +- net/core/ethtool.c | 4 +- net/ieee802154/nl-phy.c | 2 +- net/ipv4/fib_frontend.c | 2 +- net/ipv4/route.c | 2 +- net/ipv6/icmp.c | 2 +- net/mac80211/chan.c | 2 +- net/mac80211/rc80211_minstrel.c | 2 +- net/mac80211/rc80211_minstrel_ht.c | 2 +- net/mac80211/scan.c | 2 +- net/mac80211/util.c | 5 ++- net/netfilter/nf_tables_api.c | 2 +- net/netfilter/nfnetlink_cthelper.c | 5 ++- net/netrom/af_netrom.c | 2 +- net/openvswitch/vport.c | 2 +- net/rds/ib.c | 3 +- net/rose/af_rose.c | 3 +- net/sctp/auth.c | 5 ++- net/smc/smc_wr.c | 6 +-- net/sunrpc/auth_gss/gss_rpc_upcall.c | 2 +- net/sunrpc/cache.c | 2 +- net/wireless/nl80211.c | 4 +- security/apparmor/policy_unpack.c | 2 +- security/selinux/ss/services.c | 2 +- sound/firewire/fireface/ff-protocol-ff400.c | 2 +- sound/pci/ctxfi/ctatc.c | 18 ++++---- sound/pci/ctxfi/ctdaio.c | 3 +- sound/pci/ctxfi/ctmixer.c | 5 ++- sound/pci/ctxfi/ctsrc.c | 2 +- sound/pci/hda/patch_ca0132.c | 4 +- sound/soc/codecs/wm_adsp.c | 2 +- sound/soc/intel/common/sst-ipc.c | 4 +- sound/soc/soc-core.c | 4 +- sound/soc/soc-dapm.c | 2 +- sound/soc/soc-topology.c | 2 +- sound/usb/6fire/pcm.c | 10 +++-- sound/usb/line6/capture.c | 4 +- sound/usb/line6/playback.c | 4 +- virt/kvm/arm/vgic/vgic-v4.c | 2 +- 484 files changed, 1177 insertions(+), 977 deletions(-) (limited to 'lib') diff --git a/arch/arm/mach-footbridge/dc21285.c b/arch/arm/mach-footbridge/dc21285.c index e7b350f18f5f..16d71bac0061 100644 --- a/arch/arm/mach-footbridge/dc21285.c +++ b/arch/arm/mach-footbridge/dc21285.c @@ -252,7 +252,7 @@ int __init dc21285_setup(int nr, struct pci_sys_data *sys) if (nr || !footbridge_cfn_mode()) return 0; - res = kzalloc(sizeof(struct resource) * 2, GFP_KERNEL); + res = kcalloc(2, sizeof(struct resource), GFP_KERNEL); if (!res) { printk("out of memory for root bus resources"); return 0; diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c index bcf3df59f71b..6835b17113e5 100644 --- a/arch/arm/mach-ixp4xx/common-pci.c +++ b/arch/arm/mach-ixp4xx/common-pci.c @@ -421,7 +421,7 @@ int ixp4xx_setup(int nr, struct pci_sys_data *sys) if (nr >= 1) return 0; - res = kzalloc(sizeof(*res) * 2, GFP_KERNEL); + res = kcalloc(2, sizeof(*res), GFP_KERNEL); if (res == NULL) { /* * If we're out of memory this early, something is wrong, diff --git a/arch/arm/mach-omap1/mcbsp.c b/arch/arm/mach-omap1/mcbsp.c index 8ed67f8d1762..27e22e702f96 100644 --- a/arch/arm/mach-omap1/mcbsp.c +++ b/arch/arm/mach-omap1/mcbsp.c @@ -389,7 +389,7 @@ static void omap_mcbsp_register_board_cfg(struct resource *res, int res_count, { int i; - omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *), + omap_mcbsp_devices = kcalloc(size, sizeof(struct platform_device *), GFP_KERNEL); if (!omap_mcbsp_devices) { printk(KERN_ERR "Could not register McBSP devices\n"); diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c index b064066d431c..9344035d537f 100644 --- a/arch/arm/mach-omap2/hsmmc.c +++ b/arch/arm/mach-omap2/hsmmc.c @@ -35,7 +35,7 @@ static int __init omap_hsmmc_pdata_init(struct omap2_hsmmc_info *c, { char *hc_name; - hc_name = kzalloc(sizeof(char) * (HSMMC_NAME_LEN + 1), GFP_KERNEL); + hc_name = kzalloc(HSMMC_NAME_LEN + 1, GFP_KERNEL); if (!hc_name) { kfree(hc_name); return -ENOMEM; diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c index 3b829a50d1db..06b6bca3a179 100644 --- a/arch/arm/mach-omap2/omap_device.c +++ b/arch/arm/mach-omap2/omap_device.c @@ -155,7 +155,7 @@ static int omap_device_build_from_dt(struct platform_device *pdev) if (!omap_hwmod_parse_module_range(NULL, node, &res)) return -ENODEV; - hwmods = kzalloc(sizeof(struct omap_hwmod *) * oh_cnt, GFP_KERNEL); + hwmods = kcalloc(oh_cnt, sizeof(struct omap_hwmod *), GFP_KERNEL); if (!hwmods) { ret = -ENOMEM; goto odbfd_exit; @@ -405,7 +405,7 @@ omap_device_copy_resources(struct omap_hwmod *oh, goto error; } - res = kzalloc(sizeof(*res) * 2, GFP_KERNEL); + res = kcalloc(2, sizeof(*res), GFP_KERNEL); if (!res) return -ENOMEM; diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c index 021b5a8b9c0a..058a37e6d11c 100644 --- a/arch/arm/mach-omap2/prm_common.c +++ b/arch/arm/mach-omap2/prm_common.c @@ -285,10 +285,11 @@ int omap_prcm_register_chain_handler(struct omap_prcm_irq_setup *irq_setup) prcm_irq_setup = irq_setup; - prcm_irq_chips = kzalloc(sizeof(void *) * nr_regs, GFP_KERNEL); - prcm_irq_setup->saved_mask = kzalloc(sizeof(u32) * nr_regs, GFP_KERNEL); - prcm_irq_setup->priority_mask = kzalloc(sizeof(u32) * nr_regs, - GFP_KERNEL); + prcm_irq_chips = kcalloc(nr_regs, sizeof(void *), GFP_KERNEL); + prcm_irq_setup->saved_mask = kcalloc(nr_regs, sizeof(u32), + GFP_KERNEL); + prcm_irq_setup->priority_mask = kcalloc(nr_regs, sizeof(u32), + GFP_KERNEL); if (!prcm_irq_chips || !prcm_irq_setup->saved_mask || !prcm_irq_setup->priority_mask) diff --git a/arch/arm/mach-vexpress/spc.c b/arch/arm/mach-vexpress/spc.c index 21c064267af5..0f5381d13494 100644 --- a/arch/arm/mach-vexpress/spc.c +++ b/arch/arm/mach-vexpress/spc.c @@ -403,7 +403,7 @@ static int ve_spc_populate_opps(uint32_t cluster) uint32_t data = 0, off, ret, idx; struct ve_spc_opp *opps; - opps = kzalloc(sizeof(*opps) * MAX_OPPS, GFP_KERNEL); + opps = kcalloc(MAX_OPPS, sizeof(*opps), GFP_KERNEL); if (!opps) return -ENOMEM; diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index af27f1c22d93..be0fa7e39c26 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -2162,8 +2162,8 @@ arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, u64 size) goto err; mapping->bitmap_size = bitmap_size; - mapping->bitmaps = kzalloc(extensions * sizeof(unsigned long *), - GFP_KERNEL); + mapping->bitmaps = kcalloc(extensions, sizeof(unsigned long *), + GFP_KERNEL); if (!mapping->bitmaps) goto err2; diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index 97d45d5151d4..d4707abb2f16 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -234,8 +234,8 @@ static void __init register_insn_emulation_sysctl(void) struct insn_emulation *insn; struct ctl_table *insns_sysctl, *sysctl; - insns_sysctl = kzalloc(sizeof(*sysctl) * (nr_insn_emulated + 1), - GFP_KERNEL); + insns_sysctl = kcalloc(nr_insn_emulated + 1, sizeof(*sysctl), + GFP_KERNEL); raw_spin_lock_irqsave(&insn_emulation_lock, flags); list_for_each_entry(insn, &insn_emulation, node) { diff --git a/arch/arm64/mm/context.c b/arch/arm64/mm/context.c index 301417ae2ba8..c127f94da8e2 100644 --- a/arch/arm64/mm/context.c +++ b/arch/arm64/mm/context.c @@ -263,7 +263,7 @@ static int asids_init(void) */ WARN_ON(NUM_USER_ASIDS - 1 <= num_possible_cpus()); atomic64_set(&asid_generation, ASID_FIRST_VERSION); - asid_map = kzalloc(BITS_TO_LONGS(NUM_USER_ASIDS) * sizeof(*asid_map), + asid_map = kcalloc(BITS_TO_LONGS(NUM_USER_ASIDS), sizeof(*asid_map), GFP_KERNEL); if (!asid_map) panic("Failed to allocate bitmap for %lu ASIDs\n", diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c index d76529cbff20..9b820f7a6a98 100644 --- a/arch/ia64/kernel/topology.c +++ b/arch/ia64/kernel/topology.c @@ -85,7 +85,7 @@ static int __init topology_init(void) } #endif - sysfs_cpus = kzalloc(sizeof(struct ia64_cpu) * NR_CPUS, GFP_KERNEL); + sysfs_cpus = kcalloc(NR_CPUS, sizeof(struct ia64_cpu), GFP_KERNEL); if (!sysfs_cpus) panic("kzalloc in topology_init failed - NR_CPUS too big?"); @@ -319,8 +319,8 @@ static int cpu_cache_sysfs_init(unsigned int cpu) return -1; } - this_cache=kzalloc(sizeof(struct cache_info)*unique_caches, - GFP_KERNEL); + this_cache=kcalloc(unique_caches, sizeof(struct cache_info), + GFP_KERNEL); if (this_cache == NULL) return -ENOMEM; diff --git a/arch/ia64/sn/kernel/io_common.c b/arch/ia64/sn/kernel/io_common.c index 8479e9a7ce16..102aabad6d20 100644 --- a/arch/ia64/sn/kernel/io_common.c +++ b/arch/ia64/sn/kernel/io_common.c @@ -132,7 +132,7 @@ static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device, printk_once(KERN_WARNING "PROM version < 4.50 -- implementing old PROM flush WAR\n"); - war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL); + war_list = kcalloc(DEV_PER_WIDGET, sizeof(*war_list), GFP_KERNEL); BUG_ON(!war_list); SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST, diff --git a/arch/ia64/sn/pci/pcibr/pcibr_provider.c b/arch/ia64/sn/pci/pcibr/pcibr_provider.c index 8dbbef4a4f47..7195df1da121 100644 --- a/arch/ia64/sn/pci/pcibr/pcibr_provider.c +++ b/arch/ia64/sn/pci/pcibr/pcibr_provider.c @@ -184,7 +184,7 @@ pcibr_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *cont /* Setup the PMU ATE map */ soft->pbi_int_ate_resource.lowest_free_index = 0; soft->pbi_int_ate_resource.ate = - kzalloc(soft->pbi_int_ate_size * sizeof(u64), GFP_KERNEL); + kcalloc(soft->pbi_int_ate_size, sizeof(u64), GFP_KERNEL); if (!soft->pbi_int_ate_resource.ate) { kfree(soft); diff --git a/arch/mips/alchemy/common/clock.c b/arch/mips/alchemy/common/clock.c index 6b6f6851df92..d129475fd40d 100644 --- a/arch/mips/alchemy/common/clock.c +++ b/arch/mips/alchemy/common/clock.c @@ -985,7 +985,7 @@ static int __init alchemy_clk_setup_imux(int ctype) return -ENODEV; } - a = kzalloc((sizeof(*a)) * 6, GFP_KERNEL); + a = kcalloc(6, sizeof(*a), GFP_KERNEL); if (!a) return -ENOMEM; diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c index 24b04758cce5..4ca2c28878e0 100644 --- a/arch/mips/alchemy/common/dbdma.c +++ b/arch/mips/alchemy/common/dbdma.c @@ -1050,7 +1050,7 @@ static int __init dbdma_setup(unsigned int irq, dbdev_tab_t *idtable) { int ret; - dbdev_tab = kzalloc(sizeof(dbdev_tab_t) * DBDEV_TAB_SIZE, GFP_KERNEL); + dbdev_tab = kcalloc(DBDEV_TAB_SIZE, sizeof(dbdev_tab_t), GFP_KERNEL); if (!dbdev_tab) return -ENOMEM; diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c index d77a64f4c78b..1454d9f6ab2d 100644 --- a/arch/mips/alchemy/common/platform.c +++ b/arch/mips/alchemy/common/platform.c @@ -115,7 +115,7 @@ static void __init alchemy_setup_uarts(int ctype) uartclk = clk_get_rate(clk); clk_put(clk); - ports = kzalloc(s * (c + 1), GFP_KERNEL); + ports = kcalloc(s, (c + 1), GFP_KERNEL); if (!ports) { printk(KERN_INFO "Alchemy: no memory for UART data\n"); return; @@ -198,7 +198,7 @@ static unsigned long alchemy_ehci_data[][2] __initdata = { static int __init _new_usbres(struct resource **r, struct platform_device **d) { - *r = kzalloc(sizeof(struct resource) * 2, GFP_KERNEL); + *r = kcalloc(2, sizeof(struct resource), GFP_KERNEL); if (!*r) return -ENOMEM; *d = kzalloc(sizeof(struct platform_device), GFP_KERNEL); diff --git a/arch/mips/alchemy/devboards/platform.c b/arch/mips/alchemy/devboards/platform.c index 4640edab207c..203854ddd1bb 100644 --- a/arch/mips/alchemy/devboards/platform.c +++ b/arch/mips/alchemy/devboards/platform.c @@ -103,7 +103,7 @@ int __init db1x_register_pcmcia_socket(phys_addr_t pcmcia_attr_start, if (stschg_irq) cnt++; - sr = kzalloc(sizeof(struct resource) * cnt, GFP_KERNEL); + sr = kcalloc(cnt, sizeof(struct resource), GFP_KERNEL); if (!sr) return -ENOMEM; @@ -178,7 +178,7 @@ int __init db1x_register_norflash(unsigned long size, int width, return -EINVAL; ret = -ENOMEM; - parts = kzalloc(sizeof(struct mtd_partition) * 5, GFP_KERNEL); + parts = kcalloc(5, sizeof(struct mtd_partition), GFP_KERNEL); if (!parts) goto out; diff --git a/arch/mips/bmips/dma.c b/arch/mips/bmips/dma.c index 04790f4e1805..6dec30842b2f 100644 --- a/arch/mips/bmips/dma.c +++ b/arch/mips/bmips/dma.c @@ -94,7 +94,7 @@ static int __init bmips_init_dma_ranges(void) goto out_bad; /* add a dummy (zero) entry at the end as a sentinel */ - bmips_dma_ranges = kzalloc(sizeof(struct bmips_dma_range) * (len + 1), + bmips_dma_ranges = kcalloc(len + 1, sizeof(struct bmips_dma_range), GFP_KERNEL); if (!bmips_dma_ranges) goto out_bad; diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c index fd26fadc8617..ef29a9c2ffd6 100644 --- a/arch/mips/txx9/rbtx4939/setup.c +++ b/arch/mips/txx9/rbtx4939/setup.c @@ -219,7 +219,7 @@ static int __init rbtx4939_led_probe(struct platform_device *pdev) "nand-disk", }; - leds_data = kzalloc(sizeof(*leds_data) * RBTX4939_MAX_7SEGLEDS, + leds_data = kcalloc(RBTX4939_MAX_7SEGLEDS, sizeof(*leds_data), GFP_KERNEL); if (!leds_data) return -ENOMEM; diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c index b44ec104a5a1..d2205b97628c 100644 --- a/arch/powerpc/kernel/vdso.c +++ b/arch/powerpc/kernel/vdso.c @@ -791,7 +791,7 @@ static int __init vdso_init(void) #ifdef CONFIG_VDSO32 /* Make sure pages are in the correct state */ - vdso32_pagelist = kzalloc(sizeof(struct page *) * (vdso32_pages + 2), + vdso32_pagelist = kcalloc(vdso32_pages + 2, sizeof(struct page *), GFP_KERNEL); BUG_ON(vdso32_pagelist == NULL); for (i = 0; i < vdso32_pages; i++) { @@ -805,7 +805,7 @@ static int __init vdso_init(void) #endif #ifdef CONFIG_PPC64 - vdso64_pagelist = kzalloc(sizeof(struct page *) * (vdso64_pages + 2), + vdso64_pagelist = kcalloc(vdso64_pages + 2, sizeof(struct page *), GFP_KERNEL); BUG_ON(vdso64_pagelist == NULL); for (i = 0; i < vdso64_pages; i++) { diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 57a5029b4521..0c7e05d89244 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1316,7 +1316,7 @@ int numa_update_cpu_topology(bool cpus_locked) if (!weight) return 0; - updates = kzalloc(weight * (sizeof(*updates)), GFP_KERNEL); + updates = kcalloc(weight, sizeof(*updates), GFP_KERNEL); if (!updates) return 0; diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index a9636d8cba15..5b061fc81df3 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -566,7 +566,7 @@ void bpf_jit_compile(struct bpf_prog *fp) if (!bpf_jit_enable) return; - addrs = kzalloc((flen+1) * sizeof(*addrs), GFP_KERNEL); + addrs = kcalloc(flen + 1, sizeof(*addrs), GFP_KERNEL); if (addrs == NULL) return; diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c index f1c95779843b..380cbf9a40d9 100644 --- a/arch/powerpc/net/bpf_jit_comp64.c +++ b/arch/powerpc/net/bpf_jit_comp64.c @@ -949,7 +949,7 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) goto skip_init_ctx; } - addrs = kzalloc((flen+1) * sizeof(*addrs), GFP_KERNEL); + addrs = kcalloc(flen + 1, sizeof(*addrs), GFP_KERNEL); if (addrs == NULL) { fp = org_fp; goto out_addrs; diff --git a/arch/powerpc/oprofile/cell/spu_profiler.c b/arch/powerpc/oprofile/cell/spu_profiler.c index 5182f2936af2..4e099e556645 100644 --- a/arch/powerpc/oprofile/cell/spu_profiler.c +++ b/arch/powerpc/oprofile/cell/spu_profiler.c @@ -210,8 +210,8 @@ int start_spu_profiling_cycles(unsigned int cycles_reset) timer.function = profile_spus; /* Allocate arrays for collecting SPU PC samples */ - samples = kzalloc(SPUS_PER_NODE * - TRACE_ARRAY_SIZE * sizeof(u32), GFP_KERNEL); + samples = kcalloc(SPUS_PER_NODE * TRACE_ARRAY_SIZE, sizeof(u32), + GFP_KERNEL); if (!samples) return -ENOMEM; diff --git a/arch/powerpc/platforms/4xx/pci.c b/arch/powerpc/platforms/4xx/pci.c index 73e6b36bcd51..5aca523551ae 100644 --- a/arch/powerpc/platforms/4xx/pci.c +++ b/arch/powerpc/platforms/4xx/pci.c @@ -1449,7 +1449,7 @@ static int __init ppc4xx_pciex_check_core_init(struct device_node *np) count = ppc4xx_pciex_hwops->core_init(np); if (count > 0) { ppc4xx_pciex_ports = - kzalloc(count * sizeof(struct ppc4xx_pciex_port), + kcalloc(count, sizeof(struct ppc4xx_pciex_port), GFP_KERNEL); if (ppc4xx_pciex_ports) { ppc4xx_pciex_port_count = count; diff --git a/arch/powerpc/platforms/powernv/opal-sysparam.c b/arch/powerpc/platforms/powernv/opal-sysparam.c index 6fd4092798d5..9aa87df114fd 100644 --- a/arch/powerpc/platforms/powernv/opal-sysparam.c +++ b/arch/powerpc/platforms/powernv/opal-sysparam.c @@ -198,21 +198,21 @@ void __init opal_sys_param_init(void) goto out_param_buf; } - id = kzalloc(sizeof(*id) * count, GFP_KERNEL); + id = kcalloc(count, sizeof(*id), GFP_KERNEL); if (!id) { pr_err("SYSPARAM: Failed to allocate memory to read parameter " "id\n"); goto out_param_buf; } - size = kzalloc(sizeof(*size) * count, GFP_KERNEL); + size = kcalloc(count, sizeof(*size), GFP_KERNEL); if (!size) { pr_err("SYSPARAM: Failed to allocate memory to read parameter " "size\n"); goto out_free_id; } - perm = kzalloc(sizeof(*perm) * count, GFP_KERNEL); + perm = kcalloc(count, sizeof(*perm), GFP_KERNEL); if (!perm) { pr_err("SYSPARAM: Failed to allocate memory to read supported " "action on the parameter"); @@ -235,7 +235,7 @@ void __init opal_sys_param_init(void) goto out_free_perm; } - attr = kzalloc(sizeof(*attr) * count, GFP_KERNEL); + attr = kcalloc(count, sizeof(*attr), GFP_KERNEL); if (!attr) { pr_err("SYSPARAM: Failed to allocate memory for parameter " "attributes\n"); diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index df062a154ca8..353b43972bbf 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -544,7 +544,7 @@ static void __init mpic_scan_ht_pics(struct mpic *mpic) printk(KERN_INFO "mpic: Setting up HT PICs workarounds for U3/U4\n"); /* Allocate fixups array */ - mpic->fixups = kzalloc(128 * sizeof(*mpic->fixups), GFP_KERNEL); + mpic->fixups = kcalloc(128, sizeof(*mpic->fixups), GFP_KERNEL); BUG_ON(mpic->fixups == NULL); /* Init spinlock */ @@ -1324,7 +1324,7 @@ struct mpic * __init mpic_alloc(struct device_node *node, if (psrc) { /* Allocate a bitmap with one bit per interrupt */ unsigned int mapsize = BITS_TO_LONGS(intvec_top + 1); - mpic->protected = kzalloc(mapsize*sizeof(long), GFP_KERNEL); + mpic->protected = kcalloc(mapsize, sizeof(long), GFP_KERNEL); BUG_ON(mpic->protected == NULL); for (i = 0; i < psize/sizeof(u32); i++) { if (psrc[i] > intvec_top) diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c index 83bcd72b21cf..311185b9960a 100644 --- a/arch/powerpc/sysdev/xive/native.c +++ b/arch/powerpc/sysdev/xive/native.c @@ -489,7 +489,7 @@ static bool xive_parse_provisioning(struct device_node *np) if (rc == 0) return true; - xive_provision_chips = kzalloc(4 * xive_provision_chip_count, + xive_provision_chips = kcalloc(4, xive_provision_chip_count, GFP_KERNEL); if (WARN_ON(!xive_provision_chips)) return false; diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c index cb6e8066b1ad..ee6a9c387c87 100644 --- a/arch/s390/appldata/appldata_base.c +++ b/arch/s390/appldata/appldata_base.c @@ -391,7 +391,7 @@ int appldata_register_ops(struct appldata_ops *ops) if (ops->size > APPLDATA_MAX_REC_SIZE) return -EINVAL; - ops->ctl_table = kzalloc(4 * sizeof(struct ctl_table), GFP_KERNEL); + ops->ctl_table = kcalloc(4, sizeof(struct ctl_table), GFP_KERNEL); if (!ops->ctl_table) return -ENOMEM; diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index f3a1c7c6824e..09abae40f917 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -285,7 +285,7 @@ static int __init vdso_init(void) + PAGE_SIZE - 1) >> PAGE_SHIFT) + 1; /* Make sure pages are in the correct state */ - vdso32_pagelist = kzalloc(sizeof(struct page *) * (vdso32_pages + 1), + vdso32_pagelist = kcalloc(vdso32_pages + 1, sizeof(struct page *), GFP_KERNEL); BUG_ON(vdso32_pagelist == NULL); for (i = 0; i < vdso32_pages - 1; i++) { @@ -303,7 +303,7 @@ static int __init vdso_init(void) + PAGE_SIZE - 1) >> PAGE_SHIFT) + 1; /* Make sure pages are in the correct state */ - vdso64_pagelist = kzalloc(sizeof(struct page *) * (vdso64_pages + 1), + vdso64_pagelist = kcalloc(vdso64_pages + 1, sizeof(struct page *), GFP_KERNEL); BUG_ON(vdso64_pagelist == NULL); for (i = 0; i < vdso64_pages - 1; i++) { diff --git a/arch/sh/drivers/dma/dmabrg.c b/arch/sh/drivers/dma/dmabrg.c index c0dd904483c7..e5a57a109d6c 100644 --- a/arch/sh/drivers/dma/dmabrg.c +++ b/arch/sh/drivers/dma/dmabrg.c @@ -154,7 +154,7 @@ static int __init dmabrg_init(void) unsigned long or; int ret; - dmabrg_handlers = kzalloc(10 * sizeof(struct dmabrg_handler), + dmabrg_handlers = kcalloc(10, sizeof(struct dmabrg_handler), GFP_KERNEL); if (!dmabrg_handlers) return -ENOMEM; diff --git a/arch/sh/drivers/pci/pcie-sh7786.c b/arch/sh/drivers/pci/pcie-sh7786.c index 382e7ecf4c82..3d81a8b80942 100644 --- a/arch/sh/drivers/pci/pcie-sh7786.c +++ b/arch/sh/drivers/pci/pcie-sh7786.c @@ -561,7 +561,7 @@ static int __init sh7786_pcie_init(void) if (unlikely(nr_ports == 0)) return -ENODEV; - sh7786_pcie_ports = kzalloc(nr_ports * sizeof(struct sh7786_pcie_port), + sh7786_pcie_ports = kcalloc(nr_ports, sizeof(struct sh7786_pcie_port), GFP_KERNEL); if (unlikely(!sh7786_pcie_ports)) return -ENOMEM; diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 33e351704f9f..63baa8aa9414 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -565,7 +565,8 @@ SYSCALL_DEFINE5(utrap_install, utrap_entry_t, type, } if (!current_thread_info()->utraps) { current_thread_info()->utraps = - kzalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL); + kcalloc(UT_TRAP_INSTRUCTION_31 + 1, sizeof(long), + GFP_KERNEL); if (!current_thread_info()->utraps) return -ENOMEM; current_thread_info()->utraps[0] = 1; diff --git a/arch/x86/events/amd/iommu.c b/arch/x86/events/amd/iommu.c index 38b5d41b0c37..3210fee27e7f 100644 --- a/arch/x86/events/amd/iommu.c +++ b/arch/x86/events/amd/iommu.c @@ -387,7 +387,7 @@ static __init int _init_events_attrs(void) while (amd_iommu_v2_event_descs[i].attr.attr.name) i++; - attrs = kzalloc(sizeof(struct attribute **) * (i + 1), GFP_KERNEL); + attrs = kcalloc(i + 1, sizeof(struct attribute **), GFP_KERNEL); if (!attrs) return -ENOMEM; diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c index e15cfad4f89b..27a461414b30 100644 --- a/arch/x86/events/intel/uncore.c +++ b/arch/x86/events/intel/uncore.c @@ -868,7 +868,7 @@ static int __init uncore_type_init(struct intel_uncore_type *type, bool setid) size_t size; int i, j; - pmus = kzalloc(sizeof(*pmus) * type->num_boxes, GFP_KERNEL); + pmus = kcalloc(type->num_boxes, sizeof(*pmus), GFP_KERNEL); if (!pmus) return -ENOMEM; diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index cd76380af79f..e4cf6ff1c2e1 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1457,7 +1457,7 @@ static int __mcheck_cpu_mce_banks_init(void) int i; u8 num_banks = mca_cfg.banks; - mce_banks = kzalloc(num_banks * sizeof(struct mce_bank), GFP_KERNEL); + mce_banks = kcalloc(num_banks, sizeof(struct mce_bank), GFP_KERNEL); if (!mce_banks) return -ENOMEM; diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c index f591b01930db..dd33c357548f 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_amd.c +++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c @@ -1384,7 +1384,7 @@ int mce_threshold_create_device(unsigned int cpu) if (bp) return 0; - bp = kzalloc(sizeof(struct threshold_bank *) * mca_cfg.banks, + bp = kcalloc(mca_cfg.banks, sizeof(struct threshold_bank *), GFP_KERNEL); if (!bp) return -ENOMEM; diff --git a/arch/x86/kernel/cpu/mtrr/if.c b/arch/x86/kernel/cpu/mtrr/if.c index c610f47373e4..4021d3859499 100644 --- a/arch/x86/kernel/cpu/mtrr/if.c +++ b/arch/x86/kernel/cpu/mtrr/if.c @@ -43,7 +43,7 @@ mtrr_file_add(unsigned long base, unsigned long size, max = num_var_ranges; if (fcount == NULL) { - fcount = kzalloc(max * sizeof *fcount, GFP_KERNEL); + fcount = kcalloc(max, sizeof(*fcount), GFP_KERNEL); if (!fcount) return -ENOMEM; FILE_FCOUNT(file) = fcount; diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index ddccdea0b63b..346b24883911 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -610,7 +610,7 @@ static void hpet_msi_capability_lookup(unsigned int start_timer) if (!hpet_domain) return; - hpet_devs = kzalloc(sizeof(struct hpet_dev) * num_timers, GFP_KERNEL); + hpet_devs = kcalloc(num_timers, sizeof(struct hpet_dev), GFP_KERNEL); if (!hpet_devs) return; diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 9542a746dc50..9112d1cb397b 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -168,7 +168,7 @@ static int xen_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) if (type == PCI_CAP_ID_MSI && nvec > 1) return 1; - v = kzalloc(sizeof(int) * max(1, nvec), GFP_KERNEL); + v = kcalloc(max(1, nvec), sizeof(int), GFP_KERNEL); if (!v) return -ENOMEM; diff --git a/arch/x86/platform/uv/uv_time.c b/arch/x86/platform/uv/uv_time.c index b082d71b08ee..a36b368eea08 100644 --- a/arch/x86/platform/uv/uv_time.c +++ b/arch/x86/platform/uv/uv_time.c @@ -158,7 +158,7 @@ static __init int uv_rtc_allocate_timers(void) { int cpu; - blade_info = kzalloc(uv_possible_blades * sizeof(void *), GFP_KERNEL); + blade_info = kcalloc(uv_possible_blades, sizeof(void *), GFP_KERNEL); if (!blade_info) return -ENOMEM; diff --git a/block/bio.c b/block/bio.c index db9a40e9a136..9710e275f230 100644 --- a/block/bio.c +++ b/block/bio.c @@ -2091,7 +2091,8 @@ static int __init init_bio(void) { bio_slab_max = 2; bio_slab_nr = 0; - bio_slabs = kzalloc(bio_slab_max * sizeof(struct bio_slab), GFP_KERNEL); + bio_slabs = kcalloc(bio_slab_max, sizeof(struct bio_slab), + GFP_KERNEL); if (!bio_slabs) panic("bio: can't allocate bios\n"); diff --git a/block/blk-tag.c b/block/blk-tag.c index 09f19c6c52ce..24b20d86bcbc 100644 --- a/block/blk-tag.c +++ b/block/blk-tag.c @@ -99,12 +99,12 @@ init_tag_map(struct request_queue *q, struct blk_queue_tag *tags, int depth) __func__, depth); } - tag_index = kzalloc(depth * sizeof(struct request *), GFP_ATOMIC); + tag_index = kcalloc(depth, sizeof(struct request *), GFP_ATOMIC); if (!tag_index) goto fail; nr_ulongs = ALIGN(depth, BITS_PER_LONG) / BITS_PER_LONG; - tag_map = kzalloc(nr_ulongs * sizeof(unsigned long), GFP_ATOMIC); + tag_map = kcalloc(nr_ulongs, sizeof(unsigned long), GFP_ATOMIC); if (!tag_map) goto fail; diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c index 88cd949003f3..eaa60c94205a 100644 --- a/drivers/acpi/acpi_platform.c +++ b/drivers/acpi/acpi_platform.c @@ -82,7 +82,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev, if (count < 0) { return NULL; } else if (count > 0) { - resources = kzalloc(count * sizeof(struct resource), + resources = kcalloc(count, sizeof(struct resource), GFP_KERNEL); if (!resources) { dev_err(&adev->dev, "No memory for resources\n"); diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c index 4fc59c3bc673..41324f0b1bee 100644 --- a/drivers/acpi/sysfs.c +++ b/drivers/acpi/sysfs.c @@ -857,12 +857,12 @@ void acpi_irq_stats_init(void) num_gpes = acpi_current_gpe_count; num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA; - all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1), + all_attrs = kcalloc(num_counters + 1, sizeof(struct attribute *), GFP_KERNEL); if (all_attrs == NULL) return; - all_counters = kzalloc(sizeof(struct event_counter) * (num_counters), + all_counters = kcalloc(num_counters, sizeof(struct event_counter), GFP_KERNEL); if (all_counters == NULL) goto fail; @@ -871,7 +871,7 @@ void acpi_irq_stats_init(void) if (ACPI_FAILURE(status)) goto fail; - counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters), + counter_attrs = kcalloc(num_counters, sizeof(struct kobj_attribute), GFP_KERNEL); if (counter_attrs == NULL) goto fail; diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c index 4f382d51def1..2628806c64a2 100644 --- a/drivers/android/binder_alloc.c +++ b/drivers/android/binder_alloc.c @@ -692,8 +692,8 @@ int binder_alloc_mmap_handler(struct binder_alloc *alloc, } } #endif - alloc->pages = kzalloc(sizeof(alloc->pages[0]) * - ((vma->vm_end - vma->vm_start) / PAGE_SIZE), + alloc->pages = kcalloc((vma->vm_end - vma->vm_start) / PAGE_SIZE, + sizeof(alloc->pages[0]), GFP_KERNEL); if (alloc->pages == NULL) { ret = -ENOMEM; diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index c41b9eeabe7c..27d15ed7fa3d 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6987,7 +6987,7 @@ static void __init ata_parse_force_param(void) if (*p == ',') size++; - ata_force_tbl = kzalloc(sizeof(ata_force_tbl[0]) * size, GFP_KERNEL); + ata_force_tbl = kcalloc(size, sizeof(ata_force_tbl[0]), GFP_KERNEL); if (!ata_force_tbl) { printk(KERN_WARNING "ata: failed to extend force table, " "libata.force ignored\n"); diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c index 85aa76116a30..2ae1799f4992 100644 --- a/drivers/ata/libata-pmp.c +++ b/drivers/ata/libata-pmp.c @@ -340,7 +340,7 @@ static int sata_pmp_init_links (struct ata_port *ap, int nr_ports) int i, err; if (!pmp_link) { - pmp_link = kzalloc(sizeof(pmp_link[0]) * SATA_PMP_MAX_PORTS, + pmp_link = kcalloc(SATA_PMP_MAX_PORTS, sizeof(pmp_link[0]), GFP_NOIO); if (!pmp_link) return -ENOMEM; diff --git a/drivers/atm/fore200e.c b/drivers/atm/fore200e.c index 6ebc4e4820fc..99a38115b0a8 100644 --- a/drivers/atm/fore200e.c +++ b/drivers/atm/fore200e.c @@ -2094,7 +2094,8 @@ static int fore200e_alloc_rx_buf(struct fore200e *fore200e) DPRINTK(2, "rx buffers %d / %d are being allocated\n", scheme, magn); /* allocate the array of receive buffers */ - buffer = bsq->buffer = kzalloc(nbr * sizeof(struct buffer), GFP_KERNEL); + buffer = bsq->buffer = kcalloc(nbr, sizeof(struct buffer), + GFP_KERNEL); if (buffer == NULL) return -ENOMEM; diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c index be076606d30e..ff81a576347e 100644 --- a/drivers/atm/iphase.c +++ b/drivers/atm/iphase.c @@ -1618,7 +1618,7 @@ static int rx_init(struct atm_dev *dev) skb_queue_head_init(&iadev->rx_dma_q); iadev->rx_free_desc_qhead = NULL; - iadev->rx_open = kzalloc(4 * iadev->num_vc, GFP_KERNEL); + iadev->rx_open = kcalloc(4, iadev->num_vc, GFP_KERNEL); if (!iadev->rx_open) { printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n", dev->number); diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 7655d6133139..a80809bd3057 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -511,7 +511,8 @@ static void drbd_calc_cpu_mask(cpumask_var_t *cpu_mask) { unsigned int *resources_per_cpu, min_index = ~0; - resources_per_cpu = kzalloc(nr_cpu_ids * sizeof(*resources_per_cpu), GFP_KERNEL); + resources_per_cpu = kcalloc(nr_cpu_ids, sizeof(*resources_per_cpu), + GFP_KERNEL); if (resources_per_cpu) { struct drbd_resource *resource; unsigned int cpu, min = ~0; diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c index 2bdadd7f1454..7948049f6c43 100644 --- a/drivers/block/null_blk.c +++ b/drivers/block/null_blk.c @@ -1575,12 +1575,12 @@ static int setup_commands(struct nullb_queue *nq) struct nullb_cmd *cmd; int i, tag_size; - nq->cmds = kzalloc(nq->queue_depth * sizeof(*cmd), GFP_KERNEL); + nq->cmds = kcalloc(nq->queue_depth, sizeof(*cmd), GFP_KERNEL); if (!nq->cmds) return -ENOMEM; tag_size = ALIGN(nq->queue_depth, BITS_PER_LONG) / BITS_PER_LONG; - nq->tag_map = kzalloc(tag_size * sizeof(unsigned long), GFP_KERNEL); + nq->tag_map = kcalloc(tag_size, sizeof(unsigned long), GFP_KERNEL); if (!nq->tag_map) { kfree(nq->cmds); return -ENOMEM; @@ -1598,8 +1598,9 @@ static int setup_commands(struct nullb_queue *nq) static int setup_queues(struct nullb *nullb) { - nullb->queues = kzalloc(nullb->dev->submit_queues * - sizeof(struct nullb_queue), GFP_KERNEL); + nullb->queues = kcalloc(nullb->dev->submit_queues, + sizeof(struct nullb_queue), + GFP_KERNEL); if (!nullb->queues) return -ENOMEM; diff --git a/drivers/block/ps3vram.c b/drivers/block/ps3vram.c index 8fa4533a1249..1e3d5de9d838 100644 --- a/drivers/block/ps3vram.c +++ b/drivers/block/ps3vram.c @@ -407,8 +407,9 @@ static int ps3vram_cache_init(struct ps3_system_bus_device *dev) priv->cache.page_count = CACHE_PAGE_COUNT; priv->cache.page_size = CACHE_PAGE_SIZE; - priv->cache.tags = kzalloc(sizeof(struct ps3vram_tag) * - CACHE_PAGE_COUNT, GFP_KERNEL); + priv->cache.tags = kcalloc(CACHE_PAGE_COUNT, + sizeof(struct ps3vram_tag), + GFP_KERNEL); if (!priv->cache.tags) return -ENOMEM; diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c index 09537bee387f..b7d71914a32a 100644 --- a/drivers/block/rsxx/core.c +++ b/drivers/block/rsxx/core.c @@ -873,7 +873,8 @@ static int rsxx_pci_probe(struct pci_dev *dev, dev_info(CARD_TO_DEV(card), "Failed reading the number of DMA targets\n"); - card->ctrl = kzalloc(card->n_targets * sizeof(*card->ctrl), GFP_KERNEL); + card->ctrl = kcalloc(card->n_targets, sizeof(*card->ctrl), + GFP_KERNEL); if (!card->ctrl) { st = -ENOMEM; goto failed_dma_setup; diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c index beaccf197a5a..8fbc1bf6db3d 100644 --- a/drivers/block/rsxx/dma.c +++ b/drivers/block/rsxx/dma.c @@ -1038,7 +1038,7 @@ int rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card) struct rsxx_dma *dma; struct list_head *issued_dmas; - issued_dmas = kzalloc(sizeof(*issued_dmas) * card->n_targets, + issued_dmas = kcalloc(card->n_targets, sizeof(*issued_dmas), GFP_KERNEL); if (!issued_dmas) return -ENOMEM; diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c index 66412eededda..a4bc74e72c39 100644 --- a/drivers/block/xen-blkback/xenbus.c +++ b/drivers/block/xen-blkback/xenbus.c @@ -139,7 +139,8 @@ static int xen_blkif_alloc_rings(struct xen_blkif *blkif) { unsigned int r; - blkif->rings = kzalloc(blkif->nr_rings * sizeof(struct xen_blkif_ring), GFP_KERNEL); + blkif->rings = kcalloc(blkif->nr_rings, sizeof(struct xen_blkif_ring), + GFP_KERNEL); if (!blkif->rings) return -ENOMEM; diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index ae00a82f350b..b5cedccb5d7d 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -1906,7 +1906,9 @@ static int negotiate_mq(struct blkfront_info *info) if (!info->nr_rings) info->nr_rings = 1; - info->rinfo = kzalloc(sizeof(struct blkfront_ring_info) * info->nr_rings, GFP_KERNEL); + info->rinfo = kcalloc(info->nr_rings, + sizeof(struct blkfront_ring_info), + GFP_KERNEL); if (!info->rinfo) { xenbus_dev_fatal(info->xbdev, -ENOMEM, "allocating ring_info structure"); return -ENOMEM; @@ -2216,15 +2218,18 @@ static int blkfront_setup_indirect(struct blkfront_ring_info *rinfo) } for (i = 0; i < BLK_RING_SIZE(info); i++) { - rinfo->shadow[i].grants_used = kzalloc( - sizeof(rinfo->shadow[i].grants_used[0]) * grants, - GFP_NOIO); - rinfo->shadow[i].sg = kzalloc(sizeof(rinfo->shadow[i].sg[0]) * psegs, GFP_NOIO); - if (info->max_indirect_segments) - rinfo->shadow[i].indirect_grants = kzalloc( - sizeof(rinfo->shadow[i].indirect_grants[0]) * - INDIRECT_GREFS(grants), + rinfo->shadow[i].grants_used = + kcalloc(grants, + sizeof(rinfo->shadow[i].grants_used[0]), GFP_NOIO); + rinfo->shadow[i].sg = kcalloc(psegs, + sizeof(rinfo->shadow[i].sg[0]), + GFP_NOIO); + if (info->max_indirect_segments) + rinfo->shadow[i].indirect_grants = + kcalloc(INDIRECT_GREFS(grants), + sizeof(rinfo->shadow[i].indirect_grants[0]), + GFP_NOIO); if ((rinfo->shadow[i].grants_used == NULL) || (rinfo->shadow[i].sg == NULL) || (info->max_indirect_segments && diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c index b450544dcaf0..6914e4f0ce98 100644 --- a/drivers/char/agp/amd-k7-agp.c +++ b/drivers/char/agp/amd-k7-agp.c @@ -85,7 +85,8 @@ static int amd_create_gatt_pages(int nr_tables) int retval = 0; int i; - tables = kzalloc((nr_tables + 1) * sizeof(struct amd_page_map *),GFP_KERNEL); + tables = kcalloc(nr_tables + 1, sizeof(struct amd_page_map *), + GFP_KERNEL); if (tables == NULL) return -ENOMEM; diff --git a/drivers/char/agp/ati-agp.c b/drivers/char/agp/ati-agp.c index 88b4cbee4dac..20bf5f78a362 100644 --- a/drivers/char/agp/ati-agp.c +++ b/drivers/char/agp/ati-agp.c @@ -108,7 +108,8 @@ static int ati_create_gatt_pages(int nr_tables) int retval = 0; int i; - tables = kzalloc((nr_tables + 1) * sizeof(struct ati_page_map *),GFP_KERNEL); + tables = kcalloc(nr_tables + 1, sizeof(struct ati_page_map *), + GFP_KERNEL); if (tables == NULL) return -ENOMEM; diff --git a/drivers/char/agp/sworks-agp.c b/drivers/char/agp/sworks-agp.c index 4dbdd3bc9bb8..7729414100ff 100644 --- a/drivers/char/agp/sworks-agp.c +++ b/drivers/char/agp/sworks-agp.c @@ -96,7 +96,7 @@ static int serverworks_create_gatt_pages(int nr_tables) int retval = 0; int i; - tables = kzalloc((nr_tables + 1) * sizeof(struct serverworks_page_map *), + tables = kcalloc(nr_tables + 1, sizeof(struct serverworks_page_map *), GFP_KERNEL); if (tables == NULL) return -ENOMEM; diff --git a/drivers/char/ipmi/ipmi_ssif.c b/drivers/char/ipmi/ipmi_ssif.c index 22f634eb09fd..18e4650c233b 100644 --- a/drivers/char/ipmi/ipmi_ssif.c +++ b/drivers/char/ipmi/ipmi_ssif.c @@ -1757,7 +1757,8 @@ static unsigned short *ssif_address_list(void) list_for_each_entry(info, &ssif_infos, link) count++; - address_list = kzalloc(sizeof(*address_list) * (count + 1), GFP_KERNEL); + address_list = kcalloc(count + 1, sizeof(*address_list), + GFP_KERNEL); if (!address_list) return NULL; diff --git a/drivers/clk/renesas/clk-r8a7740.c b/drivers/clk/renesas/clk-r8a7740.c index d074f8e982d0..a7a30d2eca41 100644 --- a/drivers/clk/renesas/clk-r8a7740.c +++ b/drivers/clk/renesas/clk-r8a7740.c @@ -161,7 +161,7 @@ static void __init r8a7740_cpg_clocks_init(struct device_node *np) } cpg = kzalloc(sizeof(*cpg), GFP_KERNEL); - clks = kzalloc(num_clks * sizeof(*clks), GFP_KERNEL); + clks = kcalloc(num_clks, sizeof(*clks), GFP_KERNEL); if (cpg == NULL || clks == NULL) { /* We're leaking memory on purpose, there's no point in cleaning * up as the system won't boot anyway. diff --git a/drivers/clk/renesas/clk-r8a7779.c b/drivers/clk/renesas/clk-r8a7779.c index 27fbfafaf2cd..5adcca4656c3 100644 --- a/drivers/clk/renesas/clk-r8a7779.c +++ b/drivers/clk/renesas/clk-r8a7779.c @@ -138,7 +138,7 @@ static void __init r8a7779_cpg_clocks_init(struct device_node *np) } cpg = kzalloc(sizeof(*cpg), GFP_KERNEL); - clks = kzalloc(CPG_NUM_CLOCKS * sizeof(*clks), GFP_KERNEL); + clks = kcalloc(CPG_NUM_CLOCKS, sizeof(*clks), GFP_KERNEL); if (cpg == NULL || clks == NULL) { /* We're leaking memory on purpose, there's no point in cleaning * up as the system won't boot anyway. diff --git a/drivers/clk/renesas/clk-rcar-gen2.c b/drivers/clk/renesas/clk-rcar-gen2.c index ee32a022e6da..bccd62f2cb09 100644 --- a/drivers/clk/renesas/clk-rcar-gen2.c +++ b/drivers/clk/renesas/clk-rcar-gen2.c @@ -417,7 +417,7 @@ static void __init rcar_gen2_cpg_clocks_init(struct device_node *np) } cpg = kzalloc(sizeof(*cpg), GFP_KERNEL); - clks = kzalloc(num_clks * sizeof(*clks), GFP_KERNEL); + clks = kcalloc(num_clks, sizeof(*clks), GFP_KERNEL); if (cpg == NULL || clks == NULL) { /* We're leaking memory on purpose, there's no point in cleaning * up as the system won't boot anyway. diff --git a/drivers/clk/renesas/clk-rz.c b/drivers/clk/renesas/clk-rz.c index 67dd712aa723..ac2f86d626b6 100644 --- a/drivers/clk/renesas/clk-rz.c +++ b/drivers/clk/renesas/clk-rz.c @@ -97,7 +97,7 @@ static void __init rz_cpg_clocks_init(struct device_node *np) return; cpg = kzalloc(sizeof(*cpg), GFP_KERNEL); - clks = kzalloc(num_clks * sizeof(*clks), GFP_KERNEL); + clks = kcalloc(num_clks, sizeof(*clks), GFP_KERNEL); BUG_ON(!cpg || !clks); cpg->data.clks = clks; diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c index 14819d919df1..a79d81985c4e 100644 --- a/drivers/clk/st/clkgen-fsyn.c +++ b/drivers/clk/st/clkgen-fsyn.c @@ -874,7 +874,7 @@ static void __init st_of_create_quadfs_fsynths( return; clk_data->clk_num = QUADFS_MAX_CHAN; - clk_data->clks = kzalloc(QUADFS_MAX_CHAN * sizeof(struct clk *), + clk_data->clks = kcalloc(QUADFS_MAX_CHAN, sizeof(struct clk *), GFP_KERNEL); if (!clk_data->clks) { diff --git a/drivers/clk/st/clkgen-pll.c b/drivers/clk/st/clkgen-pll.c index 25bda48a5d35..7a7106dc80bf 100644 --- a/drivers/clk/st/clkgen-pll.c +++ b/drivers/clk/st/clkgen-pll.c @@ -738,7 +738,7 @@ static void __init clkgen_c32_pll_setup(struct device_node *np, return; clk_data->clk_num = num_odfs; - clk_data->clks = kzalloc(clk_data->clk_num * sizeof(struct clk *), + clk_data->clks = kcalloc(clk_data->clk_num, sizeof(struct clk *), GFP_KERNEL); if (!clk_data->clks) diff --git a/drivers/clk/sunxi/clk-usb.c b/drivers/clk/sunxi/clk-usb.c index fe0c3d169377..917fc27a33dd 100644 --- a/drivers/clk/sunxi/clk-usb.c +++ b/drivers/clk/sunxi/clk-usb.c @@ -122,7 +122,7 @@ static void __init sunxi_usb_clk_setup(struct device_node *node, if (!clk_data) return; - clk_data->clks = kzalloc((qty+1) * sizeof(struct clk *), GFP_KERNEL); + clk_data->clks = kcalloc(qty + 1, sizeof(struct clk *), GFP_KERNEL); if (!clk_data->clks) { kfree(clk_data); return; diff --git a/drivers/clk/tegra/clk.c b/drivers/clk/tegra/clk.c index 593d76a114f9..ffaf17f71860 100644 --- a/drivers/clk/tegra/clk.c +++ b/drivers/clk/tegra/clk.c @@ -216,14 +216,15 @@ struct clk ** __init tegra_clk_init(void __iomem *regs, int num, int banks) if (WARN_ON(banks > ARRAY_SIZE(periph_regs))) return NULL; - periph_clk_enb_refcnt = kzalloc(32 * banks * - sizeof(*periph_clk_enb_refcnt), GFP_KERNEL); + periph_clk_enb_refcnt = kcalloc(32 * banks, + sizeof(*periph_clk_enb_refcnt), + GFP_KERNEL); if (!periph_clk_enb_refcnt) return NULL; periph_banks = banks; - clks = kzalloc(num * sizeof(struct clk *), GFP_KERNEL); + clks = kcalloc(num, sizeof(struct clk *), GFP_KERNEL); if (!clks) kfree(periph_clk_enb_refcnt); diff --git a/drivers/clk/ti/apll.c b/drivers/clk/ti/apll.c index 9498e9363b57..61c126a5d26a 100644 --- a/drivers/clk/ti/apll.c +++ b/drivers/clk/ti/apll.c @@ -206,7 +206,7 @@ static void __init of_dra7_apll_setup(struct device_node *node) goto cleanup; } - parent_names = kzalloc(sizeof(char *) * init->num_parents, GFP_KERNEL); + parent_names = kcalloc(init->num_parents, sizeof(char *), GFP_KERNEL); if (!parent_names) goto cleanup; diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c index aaa277dd6d99..ccfb4d9a152a 100644 --- a/drivers/clk/ti/divider.c +++ b/drivers/clk/ti/divider.c @@ -366,7 +366,7 @@ int ti_clk_parse_divider_data(int *div_table, int num_dividers, int max_div, num_dividers = i; - tmp = kzalloc(sizeof(*tmp) * (valid_div + 1), GFP_KERNEL); + tmp = kcalloc(valid_div + 1, sizeof(*tmp), GFP_KERNEL); if (!tmp) return -ENOMEM; @@ -496,7 +496,7 @@ __init ti_clk_get_div_table(struct device_node *node) return ERR_PTR(-EINVAL); } - table = kzalloc(sizeof(*table) * (valid_div + 1), GFP_KERNEL); + table = kcalloc(valid_div + 1, sizeof(*table), GFP_KERNEL); if (!table) return ERR_PTR(-ENOMEM); diff --git a/drivers/clk/ti/dpll.c b/drivers/clk/ti/dpll.c index 7d33ca9042cb..dc86d07d0921 100644 --- a/drivers/clk/ti/dpll.c +++ b/drivers/clk/ti/dpll.c @@ -309,7 +309,7 @@ static void __init of_ti_dpll_setup(struct device_node *node, goto cleanup; } - parent_names = kzalloc(sizeof(char *) * init->num_parents, GFP_KERNEL); + parent_names = kcalloc(init->num_parents, sizeof(char *), GFP_KERNEL); if (!parent_names) goto cleanup; diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c index 70b3cf8e23d0..bbbf37c471a3 100644 --- a/drivers/clocksource/sh_cmt.c +++ b/drivers/clocksource/sh_cmt.c @@ -1000,7 +1000,7 @@ static int sh_cmt_setup(struct sh_cmt_device *cmt, struct platform_device *pdev) /* Allocate and setup the channels. */ cmt->num_channels = hweight8(cmt->hw_channels); - cmt->channels = kzalloc(cmt->num_channels * sizeof(*cmt->channels), + cmt->channels = kcalloc(cmt->num_channels, sizeof(*cmt->channels), GFP_KERNEL); if (cmt->channels == NULL) { ret = -ENOMEM; diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c index 53aa7e92a7d7..6812e099b6a3 100644 --- a/drivers/clocksource/sh_mtu2.c +++ b/drivers/clocksource/sh_mtu2.c @@ -418,7 +418,7 @@ static int sh_mtu2_setup(struct sh_mtu2_device *mtu, /* Allocate and setup the channels. */ mtu->num_channels = 3; - mtu->channels = kzalloc(sizeof(*mtu->channels) * mtu->num_channels, + mtu->channels = kcalloc(mtu->num_channels, sizeof(*mtu->channels), GFP_KERNEL); if (mtu->channels == NULL) { ret = -ENOMEM; diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c index 31d881621e41..c74a6c543ca2 100644 --- a/drivers/clocksource/sh_tmu.c +++ b/drivers/clocksource/sh_tmu.c @@ -569,7 +569,7 @@ static int sh_tmu_setup(struct sh_tmu_device *tmu, struct platform_device *pdev) } /* Allocate and setup the channels. */ - tmu->channels = kzalloc(sizeof(*tmu->channels) * tmu->num_channels, + tmu->channels = kcalloc(tmu->num_channels, sizeof(*tmu->channels), GFP_KERNEL); if (tmu->channels == NULL) { ret = -ENOMEM; diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 9449657d72f0..8ff1c9123834 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -759,8 +759,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy) goto err_unreg; } - freq_table = kzalloc(sizeof(*freq_table) * - (perf->state_count+1), GFP_KERNEL); + freq_table = kcalloc(perf->state_count + 1, sizeof(*freq_table), + GFP_KERNEL); if (!freq_table) { result = -ENOMEM; goto err_unreg; diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c index 1d7ef5fc1977..cf62a1f64dd7 100644 --- a/drivers/cpufreq/arm_big_little.c +++ b/drivers/cpufreq/arm_big_little.c @@ -280,7 +280,7 @@ static int merge_cluster_tables(void) for (i = 0; i < MAX_CLUSTERS; i++) count += get_table_count(freq_table[i]); - table = kzalloc(sizeof(*table) * count, GFP_KERNEL); + table = kcalloc(count, sizeof(*table), GFP_KERNEL); if (!table) return -ENOMEM; diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c index 3464580ac3ca..a9d3eec32795 100644 --- a/drivers/cpufreq/cppc_cpufreq.c +++ b/drivers/cpufreq/cppc_cpufreq.c @@ -313,7 +313,8 @@ static int __init cppc_cpufreq_init(void) if (acpi_disabled) return -ENODEV; - all_cpu_data = kzalloc(sizeof(void *) * num_possible_cpus(), GFP_KERNEL); + all_cpu_data = kcalloc(num_possible_cpus(), sizeof(void *), + GFP_KERNEL); if (!all_cpu_data) return -ENOMEM; diff --git a/drivers/cpufreq/ia64-acpi-cpufreq.c b/drivers/cpufreq/ia64-acpi-cpufreq.c index 7974a2fdb760..dd5440d3372d 100644 --- a/drivers/cpufreq/ia64-acpi-cpufreq.c +++ b/drivers/cpufreq/ia64-acpi-cpufreq.c @@ -241,8 +241,8 @@ acpi_cpufreq_cpu_init ( } /* alloc freq_table */ - freq_table = kzalloc(sizeof(*freq_table) * - (data->acpi_data.state_count + 1), + freq_table = kcalloc(data->acpi_data.state_count + 1, + sizeof(*freq_table), GFP_KERNEL); if (!freq_table) { result = -ENOMEM; diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c index 61a4c5b08219..279bd9e9fa95 100644 --- a/drivers/cpufreq/longhaul.c +++ b/drivers/cpufreq/longhaul.c @@ -474,8 +474,8 @@ static int longhaul_get_ranges(void) return -EINVAL; } - longhaul_table = kzalloc((numscales + 1) * sizeof(*longhaul_table), - GFP_KERNEL); + longhaul_table = kcalloc(numscales + 1, sizeof(*longhaul_table), + GFP_KERNEL); if (!longhaul_table) return -ENOMEM; diff --git a/drivers/cpufreq/pxa3xx-cpufreq.c b/drivers/cpufreq/pxa3xx-cpufreq.c index 7acc7fa4536d..9daa2cc318bb 100644 --- a/drivers/cpufreq/pxa3xx-cpufreq.c +++ b/drivers/cpufreq/pxa3xx-cpufreq.c @@ -93,7 +93,7 @@ static int setup_freqs_table(struct cpufreq_policy *policy, struct cpufreq_frequency_table *table; int i; - table = kzalloc((num + 1) * sizeof(*table), GFP_KERNEL); + table = kcalloc(num + 1, sizeof(*table), GFP_KERNEL); if (table == NULL) return -ENOMEM; diff --git a/drivers/cpufreq/s3c24xx-cpufreq.c b/drivers/cpufreq/s3c24xx-cpufreq.c index 909bd6e27639..3b291a2b0cb3 100644 --- a/drivers/cpufreq/s3c24xx-cpufreq.c +++ b/drivers/cpufreq/s3c24xx-cpufreq.c @@ -562,7 +562,7 @@ static int s3c_cpufreq_build_freq(void) size = cpu_cur.info->calc_freqtable(&cpu_cur, NULL, 0); size++; - ftab = kzalloc(sizeof(*ftab) * size, GFP_KERNEL); + ftab = kcalloc(size, sizeof(*ftab), GFP_KERNEL); if (!ftab) return -ENOMEM; diff --git a/drivers/cpufreq/sfi-cpufreq.c b/drivers/cpufreq/sfi-cpufreq.c index 9767afe05da2..978770432b13 100644 --- a/drivers/cpufreq/sfi-cpufreq.c +++ b/drivers/cpufreq/sfi-cpufreq.c @@ -95,8 +95,8 @@ static int __init sfi_cpufreq_init(void) if (ret) return ret; - freq_table = kzalloc(sizeof(*freq_table) * - (num_freq_table_entries + 1), GFP_KERNEL); + freq_table = kcalloc(num_freq_table_entries + 1, sizeof(*freq_table), + GFP_KERNEL); if (!freq_table) { ret = -ENOMEM; goto err_free_array; diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c index 195f27f9c1cb..4074e2615522 100644 --- a/drivers/cpufreq/spear-cpufreq.c +++ b/drivers/cpufreq/spear-cpufreq.c @@ -195,7 +195,7 @@ static int spear_cpufreq_probe(struct platform_device *pdev) cnt = prop->length / sizeof(u32); val = prop->value; - freq_tbl = kzalloc(sizeof(*freq_tbl) * (cnt + 1), GFP_KERNEL); + freq_tbl = kcalloc(cnt + 1, sizeof(*freq_tbl), GFP_KERNEL); if (!freq_tbl) { ret = -ENOMEM; goto out_put_node; diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c index 9cb234c72549..05981ccd9901 100644 --- a/drivers/crypto/amcc/crypto4xx_core.c +++ b/drivers/crypto/amcc/crypto4xx_core.c @@ -141,11 +141,11 @@ static void crypto4xx_hw_init(struct crypto4xx_device *dev) int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size) { - ctx->sa_in = kzalloc(size * 4, GFP_ATOMIC); + ctx->sa_in = kcalloc(size, 4, GFP_ATOMIC); if (ctx->sa_in == NULL) return -ENOMEM; - ctx->sa_out = kzalloc(size * 4, GFP_ATOMIC); + ctx->sa_out = kcalloc(size, 4, GFP_ATOMIC); if (ctx->sa_out == NULL) { kfree(ctx->sa_in); ctx->sa_in = NULL; @@ -180,8 +180,8 @@ static u32 crypto4xx_build_pdr(struct crypto4xx_device *dev) if (!dev->pdr) return -ENOMEM; - dev->pdr_uinfo = kzalloc(sizeof(struct pd_uinfo) * PPC4XX_NUM_PD, - GFP_KERNEL); + dev->pdr_uinfo = kcalloc(PPC4XX_NUM_PD, sizeof(struct pd_uinfo), + GFP_KERNEL); if (!dev->pdr_uinfo) { dma_free_coherent(dev->core_dev->device, sizeof(struct ce_pd) * PPC4XX_NUM_PD, diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c index d138d6b8fec5..c77b0e1655a8 100644 --- a/drivers/crypto/inside-secure/safexcel_hash.c +++ b/drivers/crypto/inside-secure/safexcel_hash.c @@ -922,7 +922,7 @@ int safexcel_hmac_setkey(const char *alg, const u8 *key, unsigned int keylen, crypto_ahash_clear_flags(tfm, ~0); blocksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); - ipad = kzalloc(2 * blocksize, GFP_KERNEL); + ipad = kcalloc(2, blocksize, GFP_KERNEL); if (!ipad) { ret = -ENOMEM; goto free_request; diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c index e61b08566093..e34d80b6b7e5 100644 --- a/drivers/crypto/marvell/hash.c +++ b/drivers/crypto/marvell/hash.c @@ -1198,7 +1198,7 @@ static int mv_cesa_ahmac_setkey(const char *hash_alg_name, blocksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); - ipad = kzalloc(2 * blocksize, GFP_KERNEL); + ipad = kcalloc(2, blocksize, GFP_KERNEL); if (!ipad) { ret = -ENOMEM; goto free_req; diff --git a/drivers/crypto/n2_core.c b/drivers/crypto/n2_core.c index 80e9c842aad4..ab6235b7ff22 100644 --- a/drivers/crypto/n2_core.c +++ b/drivers/crypto/n2_core.c @@ -1919,12 +1919,12 @@ static int grab_global_resources(void) goto out_hvapi_release; err = -ENOMEM; - cpu_to_cwq = kzalloc(sizeof(struct spu_queue *) * NR_CPUS, + cpu_to_cwq = kcalloc(NR_CPUS, sizeof(struct spu_queue *), GFP_KERNEL); if (!cpu_to_cwq) goto out_queue_cache_destroy; - cpu_to_mau = kzalloc(sizeof(struct spu_queue *) * NR_CPUS, + cpu_to_mau = kcalloc(NR_CPUS, sizeof(struct spu_queue *), GFP_KERNEL); if (!cpu_to_mau) goto out_free_cwq_table; diff --git a/drivers/crypto/qat/qat_common/qat_uclo.c b/drivers/crypto/qat/qat_common/qat_uclo.c index 98d22c2096e3..6bd8f6a2a24f 100644 --- a/drivers/crypto/qat/qat_common/qat_uclo.c +++ b/drivers/crypto/qat/qat_common/qat_uclo.c @@ -1162,8 +1162,9 @@ static int qat_uclo_map_suof(struct icp_qat_fw_loader_handle *handle, suof_handle->img_table.num_simgs = suof_ptr->num_chunks - 1; if (suof_handle->img_table.num_simgs != 0) { - suof_img_hdr = kzalloc(suof_handle->img_table.num_simgs * - sizeof(img_header), GFP_KERNEL); + suof_img_hdr = kcalloc(suof_handle->img_table.num_simgs, + sizeof(img_header), + GFP_KERNEL); if (!suof_img_hdr) return -ENOMEM; suof_handle->img_table.simg_hdr = suof_img_hdr; diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c index 7792a9186f9c..4fa4c06c9edb 100644 --- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -322,10 +322,10 @@ static int ioat_dma_self_test(struct ioatdma_device *ioat_dma) unsigned long tmo; unsigned long flags; - src = kzalloc(sizeof(u8) * IOAT_TEST_SIZE, GFP_KERNEL); + src = kzalloc(IOAT_TEST_SIZE, GFP_KERNEL); if (!src) return -ENOMEM; - dest = kzalloc(sizeof(u8) * IOAT_TEST_SIZE, GFP_KERNEL); + dest = kzalloc(IOAT_TEST_SIZE, GFP_KERNEL); if (!dest) { kfree(src); return -ENOMEM; diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index 4528b560dc4c..969534c1a6c6 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -781,7 +781,7 @@ static int mv_chan_memcpy_self_test(struct mv_xor_chan *mv_chan) if (!src) return -ENOMEM; - dest = kzalloc(sizeof(u8) * PAGE_SIZE, GFP_KERNEL); + dest = kzalloc(PAGE_SIZE, GFP_KERNEL); if (!dest) { kfree(src); return -ENOMEM; diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 6237069001c4..defcdde4d358 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -1866,7 +1866,7 @@ static int dmac_alloc_threads(struct pl330_dmac *pl330) int i; /* Allocate 1 Manager and 'chans' Channel threads */ - pl330->channels = kzalloc((1 + chans) * sizeof(*thrd), + pl330->channels = kcalloc(1 + chans, sizeof(*thrd), GFP_KERNEL); if (!pl330->channels) return -ENOMEM; @@ -2990,7 +2990,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) pl330->num_peripherals = num_chan; - pl330->peripherals = kzalloc(num_chan * sizeof(*pch), GFP_KERNEL); + pl330->peripherals = kcalloc(num_chan, sizeof(*pch), GFP_KERNEL); if (!pl330->peripherals) { ret = -ENOMEM; goto probe_err2; diff --git a/drivers/dma/sh/shdma-base.c b/drivers/dma/sh/shdma-base.c index 12fa48e380cf..6b5626e299b2 100644 --- a/drivers/dma/sh/shdma-base.c +++ b/drivers/dma/sh/shdma-base.c @@ -1045,8 +1045,9 @@ EXPORT_SYMBOL(shdma_cleanup); static int __init shdma_enter(void) { - shdma_slave_used = kzalloc(DIV_ROUND_UP(slave_num, BITS_PER_LONG) * - sizeof(long), GFP_KERNEL); + shdma_slave_used = kcalloc(DIV_ROUND_UP(slave_num, BITS_PER_LONG), + sizeof(long), + GFP_KERNEL); if (!shdma_slave_used) return -ENOMEM; return 0; diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c index f14645817ed8..c74a88b65039 100644 --- a/drivers/dma/xilinx/zynqmp_dma.c +++ b/drivers/dma/xilinx/zynqmp_dma.c @@ -471,7 +471,7 @@ static int zynqmp_dma_alloc_chan_resources(struct dma_chan *dchan) if (ret < 0) return ret; - chan->sw_desc_pool = kzalloc(sizeof(*desc) * ZYNQMP_DMA_NUM_DESCS, + chan->sw_desc_pool = kcalloc(ZYNQMP_DMA_NUM_DESCS, sizeof(*desc), GFP_KERNEL); if (!chan->sw_desc_pool) return -ENOMEM; diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 329cb96f886f..18aeabb1d5ee 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -3451,7 +3451,7 @@ static int __init amd64_edac_init(void) opstate_init(); err = -ENOMEM; - ecc_stngs = kzalloc(amd_nb_num() * sizeof(ecc_stngs[0]), GFP_KERNEL); + ecc_stngs = kcalloc(amd_nb_num(), sizeof(ecc_stngs[0]), GFP_KERNEL); if (!ecc_stngs) goto err_free; diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c index 4d0ea3563d47..8ed4dd9c571b 100644 --- a/drivers/edac/i7core_edac.c +++ b/drivers/edac/i7core_edac.c @@ -461,7 +461,7 @@ static struct i7core_dev *alloc_i7core_dev(u8 socket, if (!i7core_dev) return NULL; - i7core_dev->pdev = kzalloc(sizeof(*i7core_dev->pdev) * table->n_devs, + i7core_dev->pdev = kcalloc(table->n_devs, sizeof(*i7core_dev->pdev), GFP_KERNEL); if (!i7core_dev->pdev) { kfree(i7core_dev); diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c index 8bff5fd18185..af83ad58819c 100644 --- a/drivers/extcon/extcon.c +++ b/drivers/extcon/extcon.c @@ -1126,8 +1126,9 @@ int extcon_dev_register(struct extcon_dev *edev) char *str; struct extcon_cable *cable; - edev->cables = kzalloc(sizeof(struct extcon_cable) * - edev->max_supported, GFP_KERNEL); + edev->cables = kcalloc(edev->max_supported, + sizeof(struct extcon_cable), + GFP_KERNEL); if (!edev->cables) { ret = -ENOMEM; goto err_sysfs_alloc; @@ -1136,7 +1137,7 @@ int extcon_dev_register(struct extcon_dev *edev) cable = &edev->cables[index]; snprintf(buf, 10, "cable.%d", index); - str = kzalloc(sizeof(char) * (strlen(buf) + 1), + str = kzalloc(strlen(buf) + 1, GFP_KERNEL); if (!str) { for (index--; index >= 0; index--) { @@ -1177,15 +1178,17 @@ int extcon_dev_register(struct extcon_dev *edev) for (index = 0; edev->mutually_exclusive[index]; index++) ; - edev->attrs_muex = kzalloc(sizeof(struct attribute *) * - (index + 1), GFP_KERNEL); + edev->attrs_muex = kcalloc(index + 1, + sizeof(struct attribute *), + GFP_KERNEL); if (!edev->attrs_muex) { ret = -ENOMEM; goto err_muex; } - edev->d_attrs_muex = kzalloc(sizeof(struct device_attribute) * - index, GFP_KERNEL); + edev->d_attrs_muex = kcalloc(index, + sizeof(struct device_attribute), + GFP_KERNEL); if (!edev->d_attrs_muex) { ret = -ENOMEM; kfree(edev->attrs_muex); @@ -1194,7 +1197,7 @@ int extcon_dev_register(struct extcon_dev *edev) for (index = 0; edev->mutually_exclusive[index]; index++) { sprintf(buf, "0x%x", edev->mutually_exclusive[index]); - name = kzalloc(sizeof(char) * (strlen(buf) + 1), + name = kzalloc(strlen(buf) + 1, GFP_KERNEL); if (!name) { for (index--; index >= 0; index--) { @@ -1220,8 +1223,9 @@ int extcon_dev_register(struct extcon_dev *edev) if (edev->max_supported) { edev->extcon_dev_type.groups = - kzalloc(sizeof(struct attribute_group *) * - (edev->max_supported + 2), GFP_KERNEL); + kcalloc(edev->max_supported + 2, + sizeof(struct attribute_group *), + GFP_KERNEL); if (!edev->extcon_dev_type.groups) { ret = -ENOMEM; goto err_alloc_groups; diff --git a/drivers/firmware/dell_rbu.c b/drivers/firmware/dell_rbu.c index 2f452f1f7c8a..fb8af5cb7c9b 100644 --- a/drivers/firmware/dell_rbu.c +++ b/drivers/firmware/dell_rbu.c @@ -146,7 +146,7 @@ static int create_packet(void *data, size_t length) packet_array_size = max( (unsigned int)(allocation_floor / rbu_data.packetsize), (unsigned int)1); - invalid_addr_packet_array = kzalloc(packet_array_size * sizeof(void*), + invalid_addr_packet_array = kcalloc(packet_array_size, sizeof(void *), GFP_KERNEL); if (!invalid_addr_packet_array) { diff --git a/drivers/firmware/efi/capsule.c b/drivers/firmware/efi/capsule.c index 901b9306bf94..4938c29b7c5d 100644 --- a/drivers/firmware/efi/capsule.c +++ b/drivers/firmware/efi/capsule.c @@ -231,7 +231,7 @@ int efi_capsule_update(efi_capsule_header_t *capsule, phys_addr_t *pages) count = DIV_ROUND_UP(imagesize, PAGE_SIZE); sg_count = sg_pages_num(count); - sg_pages = kzalloc(sg_count * sizeof(*sg_pages), GFP_KERNEL); + sg_pages = kcalloc(sg_count, sizeof(*sg_pages), GFP_KERNEL); if (!sg_pages) return -ENOMEM; diff --git a/drivers/firmware/efi/runtime-map.c b/drivers/firmware/efi/runtime-map.c index f377609ff141..84a11d0a8023 100644 --- a/drivers/firmware/efi/runtime-map.c +++ b/drivers/firmware/efi/runtime-map.c @@ -166,7 +166,7 @@ int __init efi_runtime_map_init(struct kobject *efi_kobj) if (!efi_enabled(EFI_MEMMAP)) return 0; - map_entries = kzalloc(efi.memmap.nr_map * sizeof(entry), GFP_KERNEL); + map_entries = kcalloc(efi.memmap.nr_map, sizeof(entry), GFP_KERNEL); if (!map_entries) { ret = -ENOMEM; goto out; diff --git a/drivers/fmc/fmc-sdb.c b/drivers/fmc/fmc-sdb.c index ffdc1762b580..d0e65b86dc22 100644 --- a/drivers/fmc/fmc-sdb.c +++ b/drivers/fmc/fmc-sdb.c @@ -48,8 +48,8 @@ static struct sdb_array *__fmc_scan_sdb_tree(struct fmc_device *fmc, arr = kzalloc(sizeof(*arr), GFP_KERNEL); if (!arr) return ERR_PTR(-ENOMEM); - arr->record = kzalloc(sizeof(arr->record[0]) * n, GFP_KERNEL); - arr->subtree = kzalloc(sizeof(arr->subtree[0]) * n, GFP_KERNEL); + arr->record = kcalloc(n, sizeof(arr->record[0]), GFP_KERNEL); + arr->subtree = kcalloc(n, sizeof(arr->subtree[0]), GFP_KERNEL); if (!arr->record || !arr->subtree) { kfree(arr->record); kfree(arr->subtree); diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c index e2bee27eb526..b23d9a36be1f 100644 --- a/drivers/gpio/gpio-ml-ioh.c +++ b/drivers/gpio/gpio-ml-ioh.c @@ -443,7 +443,7 @@ static int ioh_gpio_probe(struct pci_dev *pdev, goto err_iomap; } - chip_save = kzalloc(sizeof(*chip) * 8, GFP_KERNEL); + chip_save = kcalloc(8, sizeof(*chip), GFP_KERNEL); if (chip_save == NULL) { ret = -ENOMEM; goto err_kzalloc; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c index 428e5eb3444f..f4c474a95875 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c @@ -310,20 +310,20 @@ static int acp_hw_init(void *handle) pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false); } - adev->acp.acp_cell = kzalloc(sizeof(struct mfd_cell) * ACP_DEVS, + adev->acp.acp_cell = kcalloc(ACP_DEVS, sizeof(struct mfd_cell), GFP_KERNEL); if (adev->acp.acp_cell == NULL) return -ENOMEM; - adev->acp.acp_res = kzalloc(sizeof(struct resource) * 4, GFP_KERNEL); + adev->acp.acp_res = kcalloc(4, sizeof(struct resource), GFP_KERNEL); if (adev->acp.acp_res == NULL) { kfree(adev->acp.acp_cell); return -ENOMEM; } - i2s_pdata = kzalloc(sizeof(struct i2s_platform_data) * 2, GFP_KERNEL); + i2s_pdata = kcalloc(2, sizeof(struct i2s_platform_data), GFP_KERNEL); if (i2s_pdata == NULL) { kfree(adev->acp.acp_res); kfree(adev->acp.acp_cell); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c index def1010ac05e..77ad59ade85c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.c @@ -452,7 +452,7 @@ int amdgpu_parse_extended_power_table(struct amdgpu_device *adev) ATOM_PPLIB_PhaseSheddingLimits_Record *entry; adev->pm.dpm.dyn_state.phase_shedding_limits_table.entries = - kzalloc(psl->ucNumEntries * + kcalloc(psl->ucNumEntries, sizeof(struct amdgpu_phase_shedding_limits_entry), GFP_KERNEL); if (!adev->pm.dpm.dyn_state.phase_shedding_limits_table.entries) { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_test.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_test.c index d167e8ab76d3..e3878256743a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_test.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_test.c @@ -53,7 +53,7 @@ static void amdgpu_do_test_moves(struct amdgpu_device *adev) n -= adev->irq.ih.ring_size; n /= size; - gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL); + gtt_obj = kcalloc(n, sizeof(*gtt_obj), GFP_KERNEL); if (!gtt_obj) { DRM_ERROR("Failed to allocate %d pointers\n", n); r = 1; diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c index 69500a8b4e2d..e9934de1b9cf 100644 --- a/drivers/gpu/drm/amd/amdgpu/atom.c +++ b/drivers/gpu/drm/amd/amdgpu/atom.c @@ -1221,7 +1221,7 @@ static int amdgpu_atom_execute_table_locked(struct atom_context *ctx, int index, ectx.abort = false; ectx.last_jump = 0; if (ws) - ectx.ws = kzalloc(4 * ws, GFP_KERNEL); + ectx.ws = kcalloc(4, ws, GFP_KERNEL); else ectx.ws = NULL; diff --git a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c index a266dcf5daed..7fbad2f5f0bd 100644 --- a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c @@ -5679,8 +5679,9 @@ static int ci_parse_power_table(struct amdgpu_device *adev) (mode_info->atom_context->bios + data_offset + le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset)); - adev->pm.dpm.ps = kzalloc(sizeof(struct amdgpu_ps) * - state_array->ucNumEntries, GFP_KERNEL); + adev->pm.dpm.ps = kcalloc(state_array->ucNumEntries, + sizeof(struct amdgpu_ps), + GFP_KERNEL); if (!adev->pm.dpm.ps) return -ENOMEM; power_state_offset = (u8 *)state_array->states; @@ -5927,7 +5928,9 @@ static int ci_dpm_init(struct amdgpu_device *adev) ci_set_private_data_variables_based_on_pptable(adev); adev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries = - kzalloc(4 * sizeof(struct amdgpu_clock_voltage_dependency_entry), GFP_KERNEL); + kcalloc(4, + sizeof(struct amdgpu_clock_voltage_dependency_entry), + GFP_KERNEL); if (!adev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries) { ci_dpm_fini(adev); return -ENOMEM; diff --git a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c index 17f7f074cedc..7a1e77c93bf1 100644 --- a/drivers/gpu/drm/amd/amdgpu/kv_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/kv_dpm.c @@ -2727,8 +2727,9 @@ static int kv_parse_power_table(struct amdgpu_device *adev) (mode_info->atom_context->bios + data_offset + le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset)); - adev->pm.dpm.ps = kzalloc(sizeof(struct amdgpu_ps) * - state_array->ucNumEntries, GFP_KERNEL); + adev->pm.dpm.ps = kcalloc(state_array->ucNumEntries, + sizeof(struct amdgpu_ps), + GFP_KERNEL); if (!adev->pm.dpm.ps) return -ENOMEM; power_state_offset = (u8 *)state_array->states; diff --git a/drivers/gpu/drm/amd/amdgpu/si_dpm.c b/drivers/gpu/drm/amd/amdgpu/si_dpm.c index b12d7c9d42a0..5c97a3671726 100644 --- a/drivers/gpu/drm/amd/amdgpu/si_dpm.c +++ b/drivers/gpu/drm/amd/amdgpu/si_dpm.c @@ -7242,8 +7242,9 @@ static int si_parse_power_table(struct amdgpu_device *adev) (mode_info->atom_context->bios + data_offset + le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset)); - adev->pm.dpm.ps = kzalloc(sizeof(struct amdgpu_ps) * - state_array->ucNumEntries, GFP_KERNEL); + adev->pm.dpm.ps = kcalloc(state_array->ucNumEntries, + sizeof(struct amdgpu_ps), + GFP_KERNEL); if (!adev->pm.dpm.ps) return -ENOMEM; power_state_offset = (u8 *)state_array->states; @@ -7346,7 +7347,9 @@ static int si_dpm_init(struct amdgpu_device *adev) return ret; adev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries = - kzalloc(4 * sizeof(struct amdgpu_clock_voltage_dependency_entry), GFP_KERNEL); + kcalloc(4, + sizeof(struct amdgpu_clock_voltage_dependency_entry), + GFP_KERNEL); if (!adev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries) { amdgpu_free_extended_power_table(adev); return -ENOMEM; diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index bd449351803f..ec304b1a5973 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -435,7 +435,7 @@ bool dm_helpers_submit_i2c( return false; } - msgs = kzalloc(num * sizeof(struct i2c_msg), GFP_KERNEL); + msgs = kcalloc(num, sizeof(struct i2c_msg), GFP_KERNEL); if (!msgs) return false; diff --git a/drivers/gpu/drm/amd/display/dc/basics/logger.c b/drivers/gpu/drm/amd/display/dc/basics/logger.c index 738a818d58d1..0866874ae8c6 100644 --- a/drivers/gpu/drm/amd/display/dc/basics/logger.c +++ b/drivers/gpu/drm/amd/display/dc/basics/logger.c @@ -364,7 +364,7 @@ void dm_logger_open( entry->type = log_type; entry->logger = logger; - entry->buf = kzalloc(DAL_LOGGER_BUFFER_MAX_SIZE * sizeof(char), + entry->buf = kzalloc(DAL_LOGGER_BUFFER_MAX_SIZE, GFP_KERNEL); entry->buf_offset = 0; diff --git a/drivers/gpu/drm/amd/display/dc/basics/vector.c b/drivers/gpu/drm/amd/display/dc/basics/vector.c index 217b8f1f7bf6..d28e9cf0e961 100644 --- a/drivers/gpu/drm/amd/display/dc/basics/vector.c +++ b/drivers/gpu/drm/amd/display/dc/basics/vector.c @@ -40,7 +40,7 @@ bool dal_vector_construct( return false; } - vector->container = kzalloc(struct_size * capacity, GFP_KERNEL); + vector->container = kcalloc(capacity, struct_size, GFP_KERNEL); if (vector->container == NULL) return false; vector->capacity = capacity; @@ -67,7 +67,7 @@ bool dal_vector_presized_costruct( return false; } - vector->container = kzalloc(struct_size * count, GFP_KERNEL); + vector->container = kcalloc(count, struct_size, GFP_KERNEL); if (vector->container == NULL) return false; diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c index 599c7ab6befe..88b09dd758ba 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c @@ -1079,13 +1079,15 @@ static void get_ss_info_from_atombios( if (*ss_entries_num == 0) return; - ss_info = kzalloc(sizeof(struct spread_spectrum_info) * (*ss_entries_num), + ss_info = kcalloc(*ss_entries_num, + sizeof(struct spread_spectrum_info), GFP_KERNEL); ss_info_cur = ss_info; if (ss_info == NULL) return; - ss_data = kzalloc(sizeof(struct spread_spectrum_data) * (*ss_entries_num), + ss_data = kcalloc(*ss_entries_num, + sizeof(struct spread_spectrum_data), GFP_KERNEL); if (ss_data == NULL) goto out_free_info; diff --git a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c index 80038e0e610f..ab5483c0c502 100644 --- a/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c +++ b/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.c @@ -98,7 +98,8 @@ struct gpio_service *dal_gpio_service_create( if (number_of_bits) { uint32_t index_of_uint = 0; - slot = kzalloc(number_of_uints * sizeof(uint32_t), + slot = kcalloc(number_of_uints, + sizeof(uint32_t), GFP_KERNEL); if (!slot) { diff --git a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c index 0cd111d59018..2533274e9cef 100644 --- a/drivers/gpu/drm/amd/display/modules/color/color_gamma.c +++ b/drivers/gpu/drm/amd/display/modules/color/color_gamma.c @@ -1413,13 +1413,15 @@ bool calculate_user_regamma_ramp(struct dc_transfer_func *output_tf, output_tf->type = TF_TYPE_DISTRIBUTED_POINTS; - rgb_user = kzalloc(sizeof(*rgb_user) * (GAMMA_RGB_256_ENTRIES + _EXTRA_POINTS), - GFP_KERNEL); + rgb_user = kcalloc(GAMMA_RGB_256_ENTRIES + _EXTRA_POINTS, + sizeof(*rgb_user), + GFP_KERNEL); if (!rgb_user) goto rgb_user_alloc_fail; - rgb_regamma = kzalloc(sizeof(*rgb_regamma) * (MAX_HW_POINTS + _EXTRA_POINTS), - GFP_KERNEL); + rgb_regamma = kcalloc(MAX_HW_POINTS + _EXTRA_POINTS, + sizeof(*rgb_regamma), + GFP_KERNEL); if (!rgb_regamma) goto rgb_regamma_alloc_fail; diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index 27d4003aa2c7..fa344ceafc17 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -155,7 +155,8 @@ struct mod_freesync *mod_freesync_create(struct dc *dc) if (core_freesync == NULL) goto fail_alloc_context; - core_freesync->map = kzalloc(sizeof(struct freesync_entity) * MOD_FREESYNC_MAX_CONCURRENT_STREAMS, + core_freesync->map = kcalloc(MOD_FREESYNC_MAX_CONCURRENT_STREAMS, + sizeof(struct freesync_entity), GFP_KERNEL); if (core_freesync->map == NULL) diff --git a/drivers/gpu/drm/amd/display/modules/stats/stats.c b/drivers/gpu/drm/amd/display/modules/stats/stats.c index 3f7d47fdc367..710852ad03f3 100644 --- a/drivers/gpu/drm/amd/display/modules/stats/stats.c +++ b/drivers/gpu/drm/amd/display/modules/stats/stats.c @@ -141,19 +141,17 @@ struct mod_stats *mod_stats_create(struct dc *dc) else core_stats->entries = reg_data; } - core_stats->time = kzalloc( - sizeof(struct stats_time_cache) * - core_stats->entries, + core_stats->time = kcalloc(core_stats->entries, + sizeof(struct stats_time_cache), GFP_KERNEL); if (core_stats->time == NULL) goto fail_construct_time; core_stats->event_entries = DAL_STATS_EVENT_ENTRIES_DEFAULT; - core_stats->events = kzalloc( - sizeof(struct stats_event_cache) * - core_stats->event_entries, - GFP_KERNEL); + core_stats->events = kcalloc(core_stats->event_entries, + sizeof(struct stats_event_cache), + GFP_KERNEL); if (core_stats->events == NULL) goto fail_construct_events; diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c index 0af13c154328..e45a1fcc7f08 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/pp_psm.c @@ -50,7 +50,7 @@ int psm_init_power_state_table(struct pp_hwmgr *hwmgr) return 0; } - hwmgr->ps = kzalloc(size * table_entries, GFP_KERNEL); + hwmgr->ps = kcalloc(table_entries, size, GFP_KERNEL); if (hwmgr->ps == NULL) return -ENOMEM; diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c index 2e0a02a80fe4..572a18c2bfb5 100644 --- a/drivers/gpu/drm/i915/gvt/vgpu.c +++ b/drivers/gpu/drm/i915/gvt/vgpu.c @@ -121,7 +121,7 @@ int intel_gvt_init_vgpu_types(struct intel_gvt *gvt) high_avail = gvt_hidden_sz(gvt) - HOST_HIGH_GM_SIZE; num_types = sizeof(vgpu_types) / sizeof(vgpu_types[0]); - gvt->types = kzalloc(num_types * sizeof(struct intel_vgpu_type), + gvt->types = kcalloc(num_types, sizeof(struct intel_vgpu_type), GFP_KERNEL); if (!gvt->types) return -ENOMEM; diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c index 2db5da550a1c..0cc6a861bcf8 100644 --- a/drivers/gpu/drm/i915/intel_hdcp.c +++ b/drivers/gpu/drm/i915/intel_hdcp.c @@ -429,7 +429,7 @@ int intel_hdcp_auth_downstream(struct intel_digital_port *intel_dig_port, if (num_downstream == 0) return -EINVAL; - ksv_fifo = kzalloc(num_downstream * DRM_HDCP_KSV_LEN, GFP_KERNEL); + ksv_fifo = kcalloc(DRM_HDCP_KSV_LEN, num_downstream, GFP_KERNEL); if (!ksv_fifo) return -ENOMEM; diff --git a/drivers/gpu/drm/i915/selftests/intel_uncore.c b/drivers/gpu/drm/i915/selftests/intel_uncore.c index f76f2597df5c..47bc5b2ddb56 100644 --- a/drivers/gpu/drm/i915/selftests/intel_uncore.c +++ b/drivers/gpu/drm/i915/selftests/intel_uncore.c @@ -137,7 +137,7 @@ static int intel_uncore_check_forcewake_domains(struct drm_i915_private *dev_pri if (!IS_ENABLED(CONFIG_DRM_I915_SELFTEST_BROKEN)) return 0; - valid = kzalloc(BITS_TO_LONGS(FW_RANGE) * sizeof(*valid), + valid = kcalloc(BITS_TO_LONGS(FW_RANGE), sizeof(*valid), GFP_KERNEL); if (!valid) return -ENOMEM; diff --git a/drivers/gpu/drm/nouveau/nvif/fifo.c b/drivers/gpu/drm/nouveau/nvif/fifo.c index 99d4fd17543c..e84a2e2ff043 100644 --- a/drivers/gpu/drm/nouveau/nvif/fifo.c +++ b/drivers/gpu/drm/nouveau/nvif/fifo.c @@ -50,8 +50,8 @@ nvif_fifo_runlists(struct nvif_device *device) goto done; device->runlists = fls64(a->v.runlists.data); - device->runlist = kzalloc(sizeof(*device->runlist) * - device->runlists, GFP_KERNEL); + device->runlist = kcalloc(device->runlists, sizeof(*device->runlist), + GFP_KERNEL); if (!device->runlist) { ret = -ENOMEM; goto done; diff --git a/drivers/gpu/drm/nouveau/nvif/object.c b/drivers/gpu/drm/nouveau/nvif/object.c index 40adfe9b334b..ef3f62840e83 100644 --- a/drivers/gpu/drm/nouveau/nvif/object.c +++ b/drivers/gpu/drm/nouveau/nvif/object.c @@ -83,7 +83,7 @@ nvif_object_sclass_get(struct nvif_object *object, struct nvif_sclass **psclass) return ret; } - *psclass = kzalloc(sizeof(**psclass) * args->sclass.count, GFP_KERNEL); + *psclass = kcalloc(args->sclass.count, sizeof(**psclass), GFP_KERNEL); if (*psclass) { for (i = 0; i < args->sclass.count; i++) { (*psclass)[i].oclass = args->sclass.oclass[i].oclass; diff --git a/drivers/gpu/drm/nouveau/nvkm/core/event.c b/drivers/gpu/drm/nouveau/nvkm/core/event.c index 4e8d3fa042df..006618d77aa4 100644 --- a/drivers/gpu/drm/nouveau/nvkm/core/event.c +++ b/drivers/gpu/drm/nouveau/nvkm/core/event.c @@ -84,7 +84,8 @@ int nvkm_event_init(const struct nvkm_event_func *func, int types_nr, int index_nr, struct nvkm_event *event) { - event->refs = kzalloc(sizeof(*event->refs) * index_nr * types_nr, + event->refs = kzalloc(array3_size(index_nr, types_nr, + sizeof(*event->refs)), GFP_KERNEL); if (!event->refs) return -ENOMEM; diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c index a99046414a18..afccf9721cf0 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gk104.c @@ -910,7 +910,7 @@ gk104_fifo_oneinit(struct nvkm_fifo *base) nvkm_debug(subdev, "%d PBDMA(s)\n", fifo->pbdma_nr); /* Read PBDMA->runlist(s) mapping from HW. */ - if (!(map = kzalloc(sizeof(*map) * fifo->pbdma_nr, GFP_KERNEL))) + if (!(map = kcalloc(fifo->pbdma_nr, sizeof(*map), GFP_KERNEL))) return -ENOMEM; for (i = 0; i < fifo->pbdma_nr; i++) diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index 3ea716875151..17a53d207978 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -268,7 +268,7 @@ static int omap_gem_attach_pages(struct drm_gem_object *obj) } } } else { - addrs = kzalloc(npages * sizeof(*addrs), GFP_KERNEL); + addrs = kcalloc(npages, sizeof(*addrs), GFP_KERNEL); if (!addrs) { ret = -ENOMEM; goto free_pages; diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c index 6a2e091aa7b6..e55cbeee7a53 100644 --- a/drivers/gpu/drm/radeon/atom.c +++ b/drivers/gpu/drm/radeon/atom.c @@ -1176,7 +1176,7 @@ static int atom_execute_table_locked(struct atom_context *ctx, int index, uint32 ectx.abort = false; ectx.last_jump = 0; if (ws) - ectx.ws = kzalloc(4 * ws, GFP_KERNEL); + ectx.ws = kcalloc(4, ws, GFP_KERNEL); else ectx.ws = NULL; diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c index 95652e643da1..0aef4937c901 100644 --- a/drivers/gpu/drm/radeon/btc_dpm.c +++ b/drivers/gpu/drm/radeon/btc_dpm.c @@ -2581,7 +2581,9 @@ int btc_dpm_init(struct radeon_device *rdev) return ret; rdev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries = - kzalloc(4 * sizeof(struct radeon_clock_voltage_dependency_entry), GFP_KERNEL); + kcalloc(4, + sizeof(struct radeon_clock_voltage_dependency_entry), + GFP_KERNEL); if (!rdev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries) { r600_free_extended_power_table(rdev); return -ENOMEM; diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c index 7e1b04dc5593..b9302c918271 100644 --- a/drivers/gpu/drm/radeon/ci_dpm.c +++ b/drivers/gpu/drm/radeon/ci_dpm.c @@ -5568,8 +5568,9 @@ static int ci_parse_power_table(struct radeon_device *rdev) (mode_info->atom_context->bios + data_offset + le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset)); - rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * - state_array->ucNumEntries, GFP_KERNEL); + rdev->pm.dpm.ps = kcalloc(state_array->ucNumEntries, + sizeof(struct radeon_ps), + GFP_KERNEL); if (!rdev->pm.dpm.ps) return -ENOMEM; power_state_offset = (u8 *)state_array->states; @@ -5770,7 +5771,9 @@ int ci_dpm_init(struct radeon_device *rdev) ci_set_private_data_variables_based_on_pptable(rdev); rdev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries = - kzalloc(4 * sizeof(struct radeon_clock_voltage_dependency_entry), GFP_KERNEL); + kcalloc(4, + sizeof(struct radeon_clock_voltage_dependency_entry), + GFP_KERNEL); if (!rdev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries) { ci_dpm_fini(rdev); return -ENOMEM; diff --git a/drivers/gpu/drm/radeon/kv_dpm.c b/drivers/gpu/drm/radeon/kv_dpm.c index ae1529b0ef6f..f055d6ea3522 100644 --- a/drivers/gpu/drm/radeon/kv_dpm.c +++ b/drivers/gpu/drm/radeon/kv_dpm.c @@ -2660,8 +2660,9 @@ static int kv_parse_power_table(struct radeon_device *rdev) (mode_info->atom_context->bios + data_offset + le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset)); - rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * - state_array->ucNumEntries, GFP_KERNEL); + rdev->pm.dpm.ps = kcalloc(state_array->ucNumEntries, + sizeof(struct radeon_ps), + GFP_KERNEL); if (!rdev->pm.dpm.ps) return -ENOMEM; power_state_offset = (u8 *)state_array->states; diff --git a/drivers/gpu/drm/radeon/ni_dpm.c b/drivers/gpu/drm/radeon/ni_dpm.c index 9416e72f86aa..0fd8d6ba9828 100644 --- a/drivers/gpu/drm/radeon/ni_dpm.c +++ b/drivers/gpu/drm/radeon/ni_dpm.c @@ -3998,8 +3998,9 @@ static int ni_parse_power_table(struct radeon_device *rdev) return -EINVAL; power_info = (union power_info *)(mode_info->atom_context->bios + data_offset); - rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * - power_info->pplib.ucNumStates, GFP_KERNEL); + rdev->pm.dpm.ps = kcalloc(power_info->pplib.ucNumStates, + sizeof(struct radeon_ps), + GFP_KERNEL); if (!rdev->pm.dpm.ps) return -ENOMEM; @@ -4075,7 +4076,9 @@ int ni_dpm_init(struct radeon_device *rdev) return ret; rdev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries = - kzalloc(4 * sizeof(struct radeon_clock_voltage_dependency_entry), GFP_KERNEL); + kcalloc(4, + sizeof(struct radeon_clock_voltage_dependency_entry), + GFP_KERNEL); if (!rdev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries) { r600_free_extended_power_table(rdev); return -ENOMEM; diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c index 31d1b4710844..73d4c5348116 100644 --- a/drivers/gpu/drm/radeon/r600_dpm.c +++ b/drivers/gpu/drm/radeon/r600_dpm.c @@ -991,7 +991,7 @@ int r600_parse_extended_power_table(struct radeon_device *rdev) ATOM_PPLIB_PhaseSheddingLimits_Record *entry; rdev->pm.dpm.dyn_state.phase_shedding_limits_table.entries = - kzalloc(psl->ucNumEntries * + kcalloc(psl->ucNumEntries, sizeof(struct radeon_phase_shedding_limits_entry), GFP_KERNEL); if (!rdev->pm.dpm.dyn_state.phase_shedding_limits_table.entries) { diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 4134759a6823..f422a8d6aec4 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -2126,13 +2126,16 @@ static int radeon_atombios_parse_power_table_1_3(struct radeon_device *rdev) num_modes = ATOM_MAX_NUMBEROF_POWER_BLOCK; if (num_modes == 0) return state_index; - rdev->pm.power_state = kzalloc(sizeof(struct radeon_power_state) * num_modes, GFP_KERNEL); + rdev->pm.power_state = kcalloc(num_modes, + sizeof(struct radeon_power_state), + GFP_KERNEL); if (!rdev->pm.power_state) return state_index; /* last mode is usually default, array is low to high */ for (i = 0; i < num_modes; i++) { rdev->pm.power_state[state_index].clock_info = - kzalloc(sizeof(struct radeon_pm_clock_info) * 1, GFP_KERNEL); + kcalloc(1, sizeof(struct radeon_pm_clock_info), + GFP_KERNEL); if (!rdev->pm.power_state[state_index].clock_info) return state_index; rdev->pm.power_state[state_index].num_clock_modes = 1; @@ -2587,8 +2590,9 @@ static int radeon_atombios_parse_power_table_4_5(struct radeon_device *rdev) radeon_atombios_add_pplib_thermal_controller(rdev, &power_info->pplib.sThermalController); if (power_info->pplib.ucNumStates == 0) return state_index; - rdev->pm.power_state = kzalloc(sizeof(struct radeon_power_state) * - power_info->pplib.ucNumStates, GFP_KERNEL); + rdev->pm.power_state = kcalloc(power_info->pplib.ucNumStates, + sizeof(struct radeon_power_state), + GFP_KERNEL); if (!rdev->pm.power_state) return state_index; /* first mode is usually default, followed by low to high */ @@ -2603,10 +2607,11 @@ static int radeon_atombios_parse_power_table_4_5(struct radeon_device *rdev) le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset) + (power_state->v1.ucNonClockStateIndex * power_info->pplib.ucNonClockSize)); - rdev->pm.power_state[i].clock_info = kzalloc(sizeof(struct radeon_pm_clock_info) * - ((power_info->pplib.ucStateEntrySize - 1) ? - (power_info->pplib.ucStateEntrySize - 1) : 1), - GFP_KERNEL); + rdev->pm.power_state[i].clock_info = + kcalloc((power_info->pplib.ucStateEntrySize - 1) ? + (power_info->pplib.ucStateEntrySize - 1) : 1, + sizeof(struct radeon_pm_clock_info), + GFP_KERNEL); if (!rdev->pm.power_state[i].clock_info) return state_index; if (power_info->pplib.ucStateEntrySize - 1) { @@ -2688,8 +2693,9 @@ static int radeon_atombios_parse_power_table_6(struct radeon_device *rdev) le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset)); if (state_array->ucNumEntries == 0) return state_index; - rdev->pm.power_state = kzalloc(sizeof(struct radeon_power_state) * - state_array->ucNumEntries, GFP_KERNEL); + rdev->pm.power_state = kcalloc(state_array->ucNumEntries, + sizeof(struct radeon_power_state), + GFP_KERNEL); if (!rdev->pm.power_state) return state_index; power_state_offset = (u8 *)state_array->states; @@ -2699,10 +2705,11 @@ static int radeon_atombios_parse_power_table_6(struct radeon_device *rdev) non_clock_array_index = power_state->v2.nonClockInfoIndex; non_clock_info = (struct _ATOM_PPLIB_NONCLOCK_INFO *) &non_clock_info_array->nonClockInfo[non_clock_array_index]; - rdev->pm.power_state[i].clock_info = kzalloc(sizeof(struct radeon_pm_clock_info) * - (power_state->v2.ucNumDPMLevels ? - power_state->v2.ucNumDPMLevels : 1), - GFP_KERNEL); + rdev->pm.power_state[i].clock_info = + kcalloc(power_state->v2.ucNumDPMLevels ? + power_state->v2.ucNumDPMLevels : 1, + sizeof(struct radeon_pm_clock_info), + GFP_KERNEL); if (!rdev->pm.power_state[i].clock_info) return state_index; if (power_state->v2.ucNumDPMLevels) { @@ -2782,7 +2789,9 @@ void radeon_atombios_get_power_modes(struct radeon_device *rdev) rdev->pm.power_state = kzalloc(sizeof(struct radeon_power_state), GFP_KERNEL); if (rdev->pm.power_state) { rdev->pm.power_state[0].clock_info = - kzalloc(sizeof(struct radeon_pm_clock_info) * 1, GFP_KERNEL); + kcalloc(1, + sizeof(struct radeon_pm_clock_info), + GFP_KERNEL); if (rdev->pm.power_state[0].clock_info) { /* add the default mode */ rdev->pm.power_state[state_index].type = diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c index 3178ba0c537c..60a61d33f607 100644 --- a/drivers/gpu/drm/radeon/radeon_combios.c +++ b/drivers/gpu/drm/radeon/radeon_combios.c @@ -2642,13 +2642,16 @@ void radeon_combios_get_power_modes(struct radeon_device *rdev) rdev->pm.default_power_state_index = -1; /* allocate 2 power states */ - rdev->pm.power_state = kzalloc(sizeof(struct radeon_power_state) * 2, GFP_KERNEL); + rdev->pm.power_state = kcalloc(2, sizeof(struct radeon_power_state), + GFP_KERNEL); if (rdev->pm.power_state) { /* allocate 1 clock mode per state */ rdev->pm.power_state[0].clock_info = - kzalloc(sizeof(struct radeon_pm_clock_info) * 1, GFP_KERNEL); + kcalloc(1, sizeof(struct radeon_pm_clock_info), + GFP_KERNEL); rdev->pm.power_state[1].clock_info = - kzalloc(sizeof(struct radeon_pm_clock_info) * 1, GFP_KERNEL); + kcalloc(1, sizeof(struct radeon_pm_clock_info), + GFP_KERNEL); if (!rdev->pm.power_state[0].clock_info || !rdev->pm.power_state[1].clock_info) goto pm_failed; diff --git a/drivers/gpu/drm/radeon/radeon_test.c b/drivers/gpu/drm/radeon/radeon_test.c index f5e9abfadb56..48f4b273e316 100644 --- a/drivers/gpu/drm/radeon/radeon_test.c +++ b/drivers/gpu/drm/radeon/radeon_test.c @@ -59,7 +59,7 @@ static void radeon_do_test_moves(struct radeon_device *rdev, int flag) n = rdev->mc.gtt_size - rdev->gart_pin_size; n /= size; - gtt_obj = kzalloc(n * sizeof(*gtt_obj), GFP_KERNEL); + gtt_obj = kcalloc(n, sizeof(*gtt_obj), GFP_KERNEL); if (!gtt_obj) { DRM_ERROR("Failed to allocate %d pointers\n", n); r = 1; diff --git a/drivers/gpu/drm/radeon/rs780_dpm.c b/drivers/gpu/drm/radeon/rs780_dpm.c index b5e4e09a8996..694b7b3e9799 100644 --- a/drivers/gpu/drm/radeon/rs780_dpm.c +++ b/drivers/gpu/drm/radeon/rs780_dpm.c @@ -804,8 +804,9 @@ static int rs780_parse_power_table(struct radeon_device *rdev) return -EINVAL; power_info = (union power_info *)(mode_info->atom_context->bios + data_offset); - rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * - power_info->pplib.ucNumStates, GFP_KERNEL); + rdev->pm.dpm.ps = kcalloc(power_info->pplib.ucNumStates, + sizeof(struct radeon_ps), + GFP_KERNEL); if (!rdev->pm.dpm.ps) return -ENOMEM; diff --git a/drivers/gpu/drm/radeon/rv6xx_dpm.c b/drivers/gpu/drm/radeon/rv6xx_dpm.c index d91aa3944593..6986051fbb89 100644 --- a/drivers/gpu/drm/radeon/rv6xx_dpm.c +++ b/drivers/gpu/drm/radeon/rv6xx_dpm.c @@ -1888,8 +1888,9 @@ static int rv6xx_parse_power_table(struct radeon_device *rdev) return -EINVAL; power_info = (union power_info *)(mode_info->atom_context->bios + data_offset); - rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * - power_info->pplib.ucNumStates, GFP_KERNEL); + rdev->pm.dpm.ps = kcalloc(power_info->pplib.ucNumStates, + sizeof(struct radeon_ps), + GFP_KERNEL); if (!rdev->pm.dpm.ps) return -ENOMEM; diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c index cb2a7ec4e217..c765ae7ea806 100644 --- a/drivers/gpu/drm/radeon/rv770_dpm.c +++ b/drivers/gpu/drm/radeon/rv770_dpm.c @@ -2282,8 +2282,9 @@ int rv7xx_parse_power_table(struct radeon_device *rdev) return -EINVAL; power_info = (union power_info *)(mode_info->atom_context->bios + data_offset); - rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * - power_info->pplib.ucNumStates, GFP_KERNEL); + rdev->pm.dpm.ps = kcalloc(power_info->pplib.ucNumStates, + sizeof(struct radeon_ps), + GFP_KERNEL); if (!rdev->pm.dpm.ps) return -ENOMEM; diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c index 90d5b41007bf..fea88078cf8e 100644 --- a/drivers/gpu/drm/radeon/si_dpm.c +++ b/drivers/gpu/drm/radeon/si_dpm.c @@ -6832,8 +6832,9 @@ static int si_parse_power_table(struct radeon_device *rdev) (mode_info->atom_context->bios + data_offset + le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset)); - rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * - state_array->ucNumEntries, GFP_KERNEL); + rdev->pm.dpm.ps = kcalloc(state_array->ucNumEntries, + sizeof(struct radeon_ps), + GFP_KERNEL); if (!rdev->pm.dpm.ps) return -ENOMEM; power_state_offset = (u8 *)state_array->states; @@ -6941,7 +6942,9 @@ int si_dpm_init(struct radeon_device *rdev) return ret; rdev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries = - kzalloc(4 * sizeof(struct radeon_clock_voltage_dependency_entry), GFP_KERNEL); + kcalloc(4, + sizeof(struct radeon_clock_voltage_dependency_entry), + GFP_KERNEL); if (!rdev->pm.dpm.dyn_state.vddc_dependency_on_dispclk.entries) { r600_free_extended_power_table(rdev); return -ENOMEM; diff --git a/drivers/gpu/drm/radeon/sumo_dpm.c b/drivers/gpu/drm/radeon/sumo_dpm.c index fd4804829e46..1e4975f3374c 100644 --- a/drivers/gpu/drm/radeon/sumo_dpm.c +++ b/drivers/gpu/drm/radeon/sumo_dpm.c @@ -1482,8 +1482,9 @@ static int sumo_parse_power_table(struct radeon_device *rdev) (mode_info->atom_context->bios + data_offset + le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset)); - rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * - state_array->ucNumEntries, GFP_KERNEL); + rdev->pm.dpm.ps = kcalloc(state_array->ucNumEntries, + sizeof(struct radeon_ps), + GFP_KERNEL); if (!rdev->pm.dpm.ps) return -ENOMEM; power_state_offset = (u8 *)state_array->states; diff --git a/drivers/gpu/drm/radeon/trinity_dpm.c b/drivers/gpu/drm/radeon/trinity_dpm.c index 2ef7c4e5e495..5d317f763eea 100644 --- a/drivers/gpu/drm/radeon/trinity_dpm.c +++ b/drivers/gpu/drm/radeon/trinity_dpm.c @@ -1757,8 +1757,9 @@ static int trinity_parse_power_table(struct radeon_device *rdev) (mode_info->atom_context->bios + data_offset + le16_to_cpu(power_info->pplib.usNonClockInfoArrayOffset)); - rdev->pm.dpm.ps = kzalloc(sizeof(struct radeon_ps) * - state_array->ucNumEntries, GFP_KERNEL); + rdev->pm.dpm.ps = kcalloc(state_array->ucNumEntries, + sizeof(struct radeon_ps), + GFP_KERNEL); if (!rdev->pm.dpm.ps) return -ENOMEM; power_state_offset = (u8 *)state_array->states; diff --git a/drivers/gpu/drm/selftests/test-drm_mm.c b/drivers/gpu/drm/selftests/test-drm_mm.c index 7cc935d7b7aa..ab6c6c9c5b5c 100644 --- a/drivers/gpu/drm/selftests/test-drm_mm.c +++ b/drivers/gpu/drm/selftests/test-drm_mm.c @@ -1631,7 +1631,7 @@ static int igt_topdown(void *ignored) if (!nodes) goto err; - bitmap = kzalloc(count / BITS_PER_LONG * sizeof(unsigned long), + bitmap = kcalloc(count / BITS_PER_LONG, sizeof(unsigned long), GFP_KERNEL); if (!bitmap) goto err_nodes; @@ -1745,7 +1745,7 @@ static int igt_bottomup(void *ignored) if (!nodes) goto err; - bitmap = kzalloc(count / BITS_PER_LONG * sizeof(unsigned long), + bitmap = kcalloc(count / BITS_PER_LONG, sizeof(unsigned long), GFP_KERNEL); if (!bitmap) goto err_nodes; diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c index 6d99534ac691..8469b6964ff6 100644 --- a/drivers/hid/hid-debug.c +++ b/drivers/hid/hid-debug.c @@ -457,7 +457,7 @@ static char *resolv_usage_page(unsigned page, struct seq_file *f) { char *buf = NULL; if (!f) { - buf = kzalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC); + buf = kzalloc(HID_DEBUG_BUFSIZE, GFP_ATOMIC); if (!buf) return ERR_PTR(-ENOMEM); } @@ -1088,7 +1088,7 @@ static int hid_debug_events_open(struct inode *inode, struct file *file) goto out; } - if (!(list->hid_debug_buf = kzalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_KERNEL))) { + if (!(list->hid_debug_buf = kzalloc(HID_DEBUG_BUFSIZE, GFP_KERNEL))) { err = -ENOMEM; kfree(list); goto out; diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index 9b82549cbbc8..658dc765753b 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -190,7 +190,7 @@ int hv_synic_alloc(void) { int cpu; - hv_context.hv_numa_map = kzalloc(sizeof(struct cpumask) * nr_node_ids, + hv_context.hv_numa_map = kcalloc(nr_node_ids, sizeof(struct cpumask), GFP_KERNEL); if (hv_context.hv_numa_map == NULL) { pr_err("Unable to allocate NUMA map\n"); diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 3c836c099a8f..be3c8b10b84a 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -202,7 +202,7 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, * First page holds struct hv_ring_buffer, do wraparound mapping for * the rest. */ - pages_wraparound = kzalloc(sizeof(struct page *) * (page_cnt * 2 - 1), + pages_wraparound = kcalloc(page_cnt * 2 - 1, sizeof(struct page *), GFP_KERNEL); if (!pages_wraparound) return -ENOMEM; diff --git a/drivers/hwmon/acpi_power_meter.c b/drivers/hwmon/acpi_power_meter.c index 14a94d90c028..34e45b97629e 100644 --- a/drivers/hwmon/acpi_power_meter.c +++ b/drivers/hwmon/acpi_power_meter.c @@ -575,8 +575,9 @@ static int read_domain_devices(struct acpi_power_meter_resource *resource) if (!pss->package.count) goto end; - resource->domain_devices = kzalloc(sizeof(struct acpi_device *) * - pss->package.count, GFP_KERNEL); + resource->domain_devices = kcalloc(pss->package.count, + sizeof(struct acpi_device *), + GFP_KERNEL); if (!resource->domain_devices) { res = -ENOMEM; goto end; @@ -796,7 +797,7 @@ static int read_capabilities(struct acpi_power_meter_resource *resource) goto error; } - *str = kzalloc(sizeof(u8) * (element->string.length + 1), + *str = kcalloc(element->string.length + 1, sizeof(u8), GFP_KERNEL); if (!*str) { res = -ENOMEM; diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 72c338eb5fae..10645c9bb7be 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -742,7 +742,7 @@ static int __init coretemp_init(void) return -ENODEV; max_packages = topology_max_packages(); - pkg_devices = kzalloc(max_packages * sizeof(struct platform_device *), + pkg_devices = kcalloc(max_packages, sizeof(struct platform_device *), GFP_KERNEL); if (!pkg_devices) return -ENOMEM; diff --git a/drivers/hwmon/i5k_amb.c b/drivers/hwmon/i5k_amb.c index 9397d2f0e79a..a4edc43dd060 100644 --- a/drivers/hwmon/i5k_amb.c +++ b/drivers/hwmon/i5k_amb.c @@ -274,8 +274,9 @@ static int i5k_amb_hwmon_init(struct platform_device *pdev) num_ambs += hweight16(data->amb_present[i] & 0x7fff); /* Set up sysfs stuff */ - data->attrs = kzalloc(sizeof(*data->attrs) * num_ambs * KNOBS_PER_AMB, - GFP_KERNEL); + data->attrs = kzalloc(array3_size(num_ambs, KNOBS_PER_AMB, + sizeof(*data->attrs)), + GFP_KERNEL); if (!data->attrs) return -ENOMEM; data->num_attrs = 0; diff --git a/drivers/hwmon/ibmpex.c b/drivers/hwmon/ibmpex.c index 21b9c72f16bd..ab72cabf5a95 100644 --- a/drivers/hwmon/ibmpex.c +++ b/drivers/hwmon/ibmpex.c @@ -387,7 +387,7 @@ static int ibmpex_find_sensors(struct ibmpex_bmc_data *data) return -ENOENT; data->num_sensors = err; - data->sensors = kzalloc(data->num_sensors * sizeof(*data->sensors), + data->sensors = kcalloc(data->num_sensors, sizeof(*data->sensors), GFP_KERNEL); if (!data->sensors) return -ENOMEM; diff --git a/drivers/i2c/busses/i2c-amd756-s4882.c b/drivers/i2c/busses/i2c-amd756-s4882.c index 65e324054970..a2f5f992af7a 100644 --- a/drivers/i2c/busses/i2c-amd756-s4882.c +++ b/drivers/i2c/busses/i2c-amd756-s4882.c @@ -169,12 +169,12 @@ static int __init amd756_s4882_init(void) printk(KERN_INFO "Enabling SMBus multiplexing for Tyan S4882\n"); /* Define the 5 virtual adapters and algorithms structures */ - if (!(s4882_adapter = kzalloc(5 * sizeof(struct i2c_adapter), + if (!(s4882_adapter = kcalloc(5, sizeof(struct i2c_adapter), GFP_KERNEL))) { error = -ENOMEM; goto ERROR1; } - if (!(s4882_algo = kzalloc(5 * sizeof(struct i2c_algorithm), + if (!(s4882_algo = kcalloc(5, sizeof(struct i2c_algorithm), GFP_KERNEL))) { error = -ENOMEM; goto ERROR2; diff --git a/drivers/i2c/busses/i2c-nforce2-s4985.c b/drivers/i2c/busses/i2c-nforce2-s4985.c index 88eda09e73c0..58a0fbf0e074 100644 --- a/drivers/i2c/busses/i2c-nforce2-s4985.c +++ b/drivers/i2c/busses/i2c-nforce2-s4985.c @@ -164,12 +164,12 @@ static int __init nforce2_s4985_init(void) printk(KERN_INFO "Enabling SMBus multiplexing for Tyan S4985\n"); /* Define the 5 virtual adapters and algorithms structures */ - s4985_adapter = kzalloc(5 * sizeof(struct i2c_adapter), GFP_KERNEL); + s4985_adapter = kcalloc(5, sizeof(struct i2c_adapter), GFP_KERNEL); if (!s4985_adapter) { error = -ENOMEM; goto ERROR1; } - s4985_algo = kzalloc(5 * sizeof(struct i2c_algorithm), GFP_KERNEL); + s4985_algo = kcalloc(5, sizeof(struct i2c_algorithm), GFP_KERNEL); if (!s4985_algo) { error = -ENOMEM; goto ERROR2; diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index 3241bb9d6c18..f6a1272c5854 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c @@ -381,7 +381,7 @@ static int nforce2_probe(struct pci_dev *dev, const struct pci_device_id *id) int res1, res2; /* we support 2 SMBus adapters */ - smbuses = kzalloc(2 * sizeof(struct nforce2_smbus), GFP_KERNEL); + smbuses = kcalloc(2, sizeof(struct nforce2_smbus), GFP_KERNEL); if (!smbuses) return -ENOMEM; pci_set_drvdata(dev, smbuses); diff --git a/drivers/i2c/i2c-stub.c b/drivers/i2c/i2c-stub.c index 4a9ad91c5ba3..f31ec0861979 100644 --- a/drivers/i2c/i2c-stub.c +++ b/drivers/i2c/i2c-stub.c @@ -338,8 +338,9 @@ static int __init i2c_stub_allocate_banks(int i) chip->bank_mask >>= 1; } - chip->bank_words = kzalloc(chip->bank_mask * chip->bank_size * - sizeof(u16), GFP_KERNEL); + chip->bank_words = kcalloc(chip->bank_mask * chip->bank_size, + sizeof(u16), + GFP_KERNEL); if (!chip->bank_words) return -ENOMEM; diff --git a/drivers/ide/hpt366.c b/drivers/ide/hpt366.c index 4b5dc0162e67..e52c58c29d9a 100644 --- a/drivers/ide/hpt366.c +++ b/drivers/ide/hpt366.c @@ -1455,7 +1455,7 @@ static int hpt366_init_one(struct pci_dev *dev, const struct pci_device_id *id) if (info == &hpt36x || info == &hpt374) dev2 = pci_get_slot(dev->bus, dev->devfn + 1); - dyn_info = kzalloc(sizeof(*dyn_info) * (dev2 ? 2 : 1), GFP_KERNEL); + dyn_info = kcalloc(dev2 ? 2 : 1, sizeof(*dyn_info), GFP_KERNEL); if (dyn_info == NULL) { printk(KERN_ERR "%s %s: out of memory!\n", d.name, pci_name(dev)); diff --git a/drivers/ide/it821x.c b/drivers/ide/it821x.c index 04029d18a696..36a64c8ea575 100644 --- a/drivers/ide/it821x.c +++ b/drivers/ide/it821x.c @@ -652,7 +652,7 @@ static int it821x_init_one(struct pci_dev *dev, const struct pci_device_id *id) struct it821x_dev *itdevs; int rc; - itdevs = kzalloc(2 * sizeof(*itdevs), GFP_KERNEL); + itdevs = kcalloc(2, sizeof(*itdevs), GFP_KERNEL); if (itdevs == NULL) { printk(KERN_ERR DRV_NAME " %s: out of memory\n", pci_name(dev)); return -ENOMEM; diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c index 36607d52fee0..76643c5571aa 100644 --- a/drivers/iio/imu/adis_buffer.c +++ b/drivers/iio/imu/adis_buffer.c @@ -38,7 +38,7 @@ int adis_update_scan_mode(struct iio_dev *indio_dev, if (!adis->xfer) return -ENOMEM; - adis->buffer = kzalloc(indio_dev->scan_bytes * 2, GFP_KERNEL); + adis->buffer = kcalloc(indio_dev->scan_bytes, 2, GFP_KERNEL); if (!adis->buffer) return -ENOMEM; diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index ec98790e2a28..06ca3f7fcc44 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -436,7 +436,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev) } /* NULL terminated array to save passing size */ - chans = kzalloc(sizeof(*chans)*(nummaps + 1), GFP_KERNEL); + chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL); if (chans == NULL) { ret = -ENOMEM; goto error_ret; diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index 71a34bee453d..81d66f56e38f 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -1245,8 +1245,9 @@ int ib_cache_setup_one(struct ib_device *device) rwlock_init(&device->cache.lock); device->cache.ports = - kzalloc(sizeof(*device->cache.ports) * - (rdma_end_port(device) - rdma_start_port(device) + 1), GFP_KERNEL); + kcalloc(rdma_end_port(device) - rdma_start_port(device) + 1, + sizeof(*device->cache.ports), + GFP_KERNEL); if (!device->cache.ports) return -ENOMEM; diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index 84f51386e1e3..6fa4c59dc7a7 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -336,8 +336,8 @@ static int read_port_immutable(struct ib_device *device) * Therefore port_immutable is declared as a 1 based array with * potential empty slots at the beginning. */ - device->port_immutable = kzalloc(sizeof(*device->port_immutable) - * (end_port + 1), + device->port_immutable = kcalloc(end_port + 1, + sizeof(*device->port_immutable), GFP_KERNEL); if (!device->port_immutable) return -ENOMEM; diff --git a/drivers/infiniband/core/iwpm_util.c b/drivers/infiniband/core/iwpm_util.c index da12da1c36f6..cdb63f3f4de7 100644 --- a/drivers/infiniband/core/iwpm_util.c +++ b/drivers/infiniband/core/iwpm_util.c @@ -56,14 +56,16 @@ int iwpm_init(u8 nl_client) int ret = 0; mutex_lock(&iwpm_admin_lock); if (atomic_read(&iwpm_admin.refcount) == 0) { - iwpm_hash_bucket = kzalloc(IWPM_MAPINFO_HASH_SIZE * - sizeof(struct hlist_head), GFP_KERNEL); + iwpm_hash_bucket = kcalloc(IWPM_MAPINFO_HASH_SIZE, + sizeof(struct hlist_head), + GFP_KERNEL); if (!iwpm_hash_bucket) { ret = -ENOMEM; goto init_exit; } - iwpm_reminfo_bucket = kzalloc(IWPM_REMINFO_HASH_SIZE * - sizeof(struct hlist_head), GFP_KERNEL); + iwpm_reminfo_bucket = kcalloc(IWPM_REMINFO_HASH_SIZE, + sizeof(struct hlist_head), + GFP_KERNEL); if (!iwpm_reminfo_bucket) { kfree(iwpm_hash_bucket); ret = -ENOMEM; diff --git a/drivers/infiniband/hw/cxgb3/cxio_hal.c b/drivers/infiniband/hw/cxgb3/cxio_hal.c index 3328acc53c2a..dcb4bba522ba 100644 --- a/drivers/infiniband/hw/cxgb3/cxio_hal.c +++ b/drivers/infiniband/hw/cxgb3/cxio_hal.c @@ -279,7 +279,7 @@ int cxio_create_qp(struct cxio_rdev *rdev_p, u32 kernel_domain, if (!wq->qpid) return -ENOMEM; - wq->rq = kzalloc(depth * sizeof(struct t3_swrq), GFP_KERNEL); + wq->rq = kcalloc(depth, sizeof(struct t3_swrq), GFP_KERNEL); if (!wq->rq) goto err1; @@ -287,7 +287,7 @@ int cxio_create_qp(struct cxio_rdev *rdev_p, u32 kernel_domain, if (!wq->rq_addr) goto err2; - wq->sq = kzalloc(depth * sizeof(struct t3_swsq), GFP_KERNEL); + wq->sq = kcalloc(depth, sizeof(struct t3_swsq), GFP_KERNEL); if (!wq->sq) goto err3; diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c index 44161ca4d2a8..a3c3418afd73 100644 --- a/drivers/infiniband/hw/cxgb4/device.c +++ b/drivers/infiniband/hw/cxgb4/device.c @@ -859,8 +859,9 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev) rdev->status_page->cq_size = rdev->lldi.vr->cq.size; if (c4iw_wr_log) { - rdev->wr_log = kzalloc((1 << c4iw_wr_log_size_order) * - sizeof(*rdev->wr_log), GFP_KERNEL); + rdev->wr_log = kcalloc(1 << c4iw_wr_log_size_order, + sizeof(*rdev->wr_log), + GFP_KERNEL); if (rdev->wr_log) { rdev->wr_log_size = 1 << c4iw_wr_log_size_order; atomic_set(&rdev->wr_log_idx, 0); @@ -1445,7 +1446,7 @@ static void recover_queues(struct uld_ctx *ctx) ctx->dev->db_state = RECOVERY; idr_for_each(&ctx->dev->qpidr, count_qps, &count); - qp_list.qps = kzalloc(count * sizeof *qp_list.qps, GFP_ATOMIC); + qp_list.qps = kcalloc(count, sizeof(*qp_list.qps), GFP_ATOMIC); if (!qp_list.qps) { spin_unlock_irq(&ctx->dev->lock); return; diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c index 4106eed1b8fb..aef53305f1c3 100644 --- a/drivers/infiniband/hw/cxgb4/qp.c +++ b/drivers/infiniband/hw/cxgb4/qp.c @@ -216,15 +216,15 @@ static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq, } if (!user) { - wq->sq.sw_sq = kzalloc(wq->sq.size * sizeof *wq->sq.sw_sq, - GFP_KERNEL); + wq->sq.sw_sq = kcalloc(wq->sq.size, sizeof(*wq->sq.sw_sq), + GFP_KERNEL); if (!wq->sq.sw_sq) { ret = -ENOMEM; goto free_rq_qid; } - wq->rq.sw_rq = kzalloc(wq->rq.size * sizeof *wq->rq.sw_rq, - GFP_KERNEL); + wq->rq.sw_rq = kcalloc(wq->rq.size, sizeof(*wq->rq.sw_rq), + GFP_KERNEL); if (!wq->rq.sw_rq) { ret = -ENOMEM; goto free_sw_sq; diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 0e8dad68910a..a6e11be0ea0f 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -3177,7 +3177,7 @@ static int hns_roce_v2_modify_qp(struct ib_qp *ibqp, struct device *dev = hr_dev->dev; int ret = -EINVAL; - context = kzalloc(2 * sizeof(*context), GFP_KERNEL); + context = kcalloc(2, sizeof(*context), GFP_KERNEL); if (!context) return -ENOMEM; diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c index d604b3d5aa3e..90a3e2642c2e 100644 --- a/drivers/infiniband/hw/mlx4/mad.c +++ b/drivers/infiniband/hw/mlx4/mad.c @@ -1613,7 +1613,8 @@ static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx, tun_qp = &ctx->qp[qp_type]; - tun_qp->ring = kzalloc(sizeof (struct mlx4_ib_buf) * MLX4_NUM_TUNNEL_BUFS, + tun_qp->ring = kcalloc(MLX4_NUM_TUNNEL_BUFS, + sizeof(struct mlx4_ib_buf), GFP_KERNEL); if (!tun_qp->ring) return -ENOMEM; diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c index dc3c2346045c..6686042aafb4 100644 --- a/drivers/infiniband/hw/mthca/mthca_mr.c +++ b/drivers/infiniband/hw/mthca/mthca_mr.c @@ -144,7 +144,7 @@ static int mthca_buddy_init(struct mthca_buddy *buddy, int max_order) buddy->max_order = max_order; spin_lock_init(&buddy->lock); - buddy->bits = kzalloc((buddy->max_order + 1) * sizeof (long *), + buddy->bits = kcalloc(buddy->max_order + 1, sizeof(long *), GFP_KERNEL); buddy->num_free = kcalloc((buddy->max_order + 1), sizeof *buddy->num_free, GFP_KERNEL); diff --git a/drivers/infiniband/hw/mthca/mthca_profile.c b/drivers/infiniband/hw/mthca/mthca_profile.c index 15d064479ef6..7ea970774839 100644 --- a/drivers/infiniband/hw/mthca/mthca_profile.c +++ b/drivers/infiniband/hw/mthca/mthca_profile.c @@ -79,7 +79,7 @@ s64 mthca_make_profile(struct mthca_dev *dev, struct mthca_resource *profile; int i, j; - profile = kzalloc(MTHCA_RES_NUM * sizeof *profile, GFP_KERNEL); + profile = kcalloc(MTHCA_RES_NUM, sizeof(*profile), GFP_KERNEL); if (!profile) return -ENOMEM; diff --git a/drivers/infiniband/hw/nes/nes_mgt.c b/drivers/infiniband/hw/nes/nes_mgt.c index 21e0ebd39a05..9bdb84dc225c 100644 --- a/drivers/infiniband/hw/nes/nes_mgt.c +++ b/drivers/infiniband/hw/nes/nes_mgt.c @@ -878,7 +878,8 @@ int nes_init_mgt_qp(struct nes_device *nesdev, struct net_device *netdev, struct int ret; /* Allocate space the all mgt QPs once */ - mgtvnic = kzalloc(NES_MGT_QP_COUNT * sizeof(struct nes_vnic_mgt), GFP_KERNEL); + mgtvnic = kcalloc(NES_MGT_QP_COUNT, sizeof(struct nes_vnic_mgt), + GFP_KERNEL); if (!mgtvnic) return -ENOMEM; diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c index 1040a6e34230..32f26556c808 100644 --- a/drivers/infiniband/hw/nes/nes_verbs.c +++ b/drivers/infiniband/hw/nes/nes_verbs.c @@ -2254,8 +2254,9 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, ibmr = ERR_PTR(-ENOMEM); goto reg_user_mr_err; } - root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, - GFP_KERNEL); + root_vpbl.leaf_vpbl = kcalloc(1024, + sizeof(*root_vpbl.leaf_vpbl), + GFP_KERNEL); if (!root_vpbl.leaf_vpbl) { ib_umem_release(region); pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c index 2c260e1c29d1..6c136e5017fe 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c @@ -3096,7 +3096,7 @@ static int ocrdma_create_eqs(struct ocrdma_dev *dev) if (!num_eq) return -EINVAL; - dev->eq_tbl = kzalloc(sizeof(struct ocrdma_eq) * num_eq, GFP_KERNEL); + dev->eq_tbl = kcalloc(num_eq, sizeof(struct ocrdma_eq), GFP_KERNEL); if (!dev->eq_tbl) return -ENOMEM; diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c index eb8b6a935016..5962c0ed9847 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c @@ -221,19 +221,20 @@ static int ocrdma_register_device(struct ocrdma_dev *dev) static int ocrdma_alloc_resources(struct ocrdma_dev *dev) { mutex_init(&dev->dev_lock); - dev->cq_tbl = kzalloc(sizeof(struct ocrdma_cq *) * - OCRDMA_MAX_CQ, GFP_KERNEL); + dev->cq_tbl = kcalloc(OCRDMA_MAX_CQ, sizeof(struct ocrdma_cq *), + GFP_KERNEL); if (!dev->cq_tbl) goto alloc_err; if (dev->attr.max_qp) { - dev->qp_tbl = kzalloc(sizeof(struct ocrdma_qp *) * - OCRDMA_MAX_QP, GFP_KERNEL); + dev->qp_tbl = kcalloc(OCRDMA_MAX_QP, + sizeof(struct ocrdma_qp *), + GFP_KERNEL); if (!dev->qp_tbl) goto alloc_err; } - dev->stag_arr = kzalloc(sizeof(u64) * OCRDMA_MAX_STAG, GFP_KERNEL); + dev->stag_arr = kcalloc(OCRDMA_MAX_STAG, sizeof(u64), GFP_KERNEL); if (dev->stag_arr == NULL) goto alloc_err; diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index eb9f9e9e213b..82e20fc32890 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -843,8 +843,8 @@ static int ocrdma_build_pbl_tbl(struct ocrdma_dev *dev, struct ocrdma_hw_mr *mr) void *va; dma_addr_t pa; - mr->pbl_table = kzalloc(sizeof(struct ocrdma_pbl) * - mr->num_pbls, GFP_KERNEL); + mr->pbl_table = kcalloc(mr->num_pbls, sizeof(struct ocrdma_pbl), + GFP_KERNEL); if (!mr->pbl_table) return -ENOMEM; @@ -1323,12 +1323,12 @@ static void ocrdma_set_qp_db(struct ocrdma_dev *dev, struct ocrdma_qp *qp, static int ocrdma_alloc_wr_id_tbl(struct ocrdma_qp *qp) { qp->wqe_wr_id_tbl = - kzalloc(sizeof(*(qp->wqe_wr_id_tbl)) * qp->sq.max_cnt, + kcalloc(qp->sq.max_cnt, sizeof(*(qp->wqe_wr_id_tbl)), GFP_KERNEL); if (qp->wqe_wr_id_tbl == NULL) return -ENOMEM; qp->rqe_wr_id_tbl = - kzalloc(sizeof(u64) * qp->rq.max_cnt, GFP_KERNEL); + kcalloc(qp->rq.max_cnt, sizeof(u64), GFP_KERNEL); if (qp->rqe_wr_id_tbl == NULL) return -ENOMEM; @@ -1865,8 +1865,8 @@ struct ib_srq *ocrdma_create_srq(struct ib_pd *ibpd, if (udata == NULL) { status = -ENOMEM; - srq->rqe_wr_id_tbl = kzalloc(sizeof(u64) * srq->rq.max_cnt, - GFP_KERNEL); + srq->rqe_wr_id_tbl = kcalloc(srq->rq.max_cnt, sizeof(u64), + GFP_KERNEL); if (srq->rqe_wr_id_tbl == NULL) goto arm_err; diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c index f4cb60b658ea..ad22b32bbd9c 100644 --- a/drivers/infiniband/hw/qedr/main.c +++ b/drivers/infiniband/hw/qedr/main.c @@ -317,8 +317,8 @@ static int qedr_alloc_resources(struct qedr_dev *dev) u16 n_entries; int i, rc; - dev->sgid_tbl = kzalloc(sizeof(union ib_gid) * - QEDR_MAX_SGID, GFP_KERNEL); + dev->sgid_tbl = kcalloc(QEDR_MAX_SGID, sizeof(union ib_gid), + GFP_KERNEL); if (!dev->sgid_tbl) return -ENOMEM; diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c index 710032f1fad7..f7ac8fc9b531 100644 --- a/drivers/infiniband/hw/qedr/verbs.c +++ b/drivers/infiniband/hw/qedr/verbs.c @@ -1614,7 +1614,7 @@ static int qedr_create_kernel_qp(struct qedr_dev *dev, qp->sq.max_wr = min_t(u32, attrs->cap.max_send_wr * dev->wq_multiplier, dev->attr.max_sqe); - qp->wqe_wr_id = kzalloc(qp->sq.max_wr * sizeof(*qp->wqe_wr_id), + qp->wqe_wr_id = kcalloc(qp->sq.max_wr, sizeof(*qp->wqe_wr_id), GFP_KERNEL); if (!qp->wqe_wr_id) { DP_ERR(dev, "create qp: failed SQ shadow memory allocation\n"); @@ -1632,7 +1632,7 @@ static int qedr_create_kernel_qp(struct qedr_dev *dev, qp->rq.max_wr = (u16) max_t(u32, attrs->cap.max_recv_wr, 1); /* Allocate driver internal RQ array */ - qp->rqe_wr_id = kzalloc(qp->rq.max_wr * sizeof(*qp->rqe_wr_id), + qp->rqe_wr_id = kcalloc(qp->rq.max_wr, sizeof(*qp->rqe_wr_id), GFP_KERNEL); if (!qp->rqe_wr_id) { DP_ERR(dev, diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index 27155d92f810..bf5e222eed8e 100644 --- a/drivers/infiniband/hw/qib/qib_iba7322.c +++ b/drivers/infiniband/hw/qib/qib_iba7322.c @@ -7295,8 +7295,9 @@ struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *pdev, actual_cnt -= dd->num_pports; tabsize = actual_cnt; - dd->cspec->msix_entries = kzalloc(tabsize * - sizeof(struct qib_msix_entry), GFP_KERNEL); + dd->cspec->msix_entries = kcalloc(tabsize, + sizeof(struct qib_msix_entry), + GFP_KERNEL); if (!dd->cspec->msix_entries) tabsize = 0; diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c index 015520289735..dd4547f537f7 100644 --- a/drivers/infiniband/hw/qib/qib_init.c +++ b/drivers/infiniband/hw/qib/qib_init.c @@ -1134,8 +1134,8 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra) if (!qib_cpulist_count) { u32 count = num_online_cpus(); - qib_cpulist = kzalloc(BITS_TO_LONGS(count) * - sizeof(long), GFP_KERNEL); + qib_cpulist = kcalloc(BITS_TO_LONGS(count), sizeof(long), + GFP_KERNEL); if (qib_cpulist) qib_cpulist_count = count; } diff --git a/drivers/infiniband/hw/usnic/usnic_ib_qp_grp.c b/drivers/infiniband/hw/usnic/usnic_ib_qp_grp.c index 912d8ef04352..bf5136533d49 100644 --- a/drivers/infiniband/hw/usnic/usnic_ib_qp_grp.c +++ b/drivers/infiniband/hw/usnic/usnic_ib_qp_grp.c @@ -543,7 +543,7 @@ alloc_res_chunk_list(struct usnic_vnic *vnic, /* Do Nothing */ } - res_chunk_list = kzalloc(sizeof(*res_chunk_list)*(res_lst_sz+1), + res_chunk_list = kcalloc(res_lst_sz + 1, sizeof(*res_chunk_list), GFP_ATOMIC); if (!res_chunk_list) return ERR_PTR(-ENOMEM); diff --git a/drivers/infiniband/hw/usnic/usnic_vnic.c b/drivers/infiniband/hw/usnic/usnic_vnic.c index e7b0030254da..ebe08f348453 100644 --- a/drivers/infiniband/hw/usnic/usnic_vnic.c +++ b/drivers/infiniband/hw/usnic/usnic_vnic.c @@ -312,7 +312,7 @@ static int usnic_vnic_alloc_res_chunk(struct usnic_vnic *vnic, } chunk->cnt = chunk->free_cnt = cnt; - chunk->res = kzalloc(sizeof(*(chunk->res))*cnt, GFP_KERNEL); + chunk->res = kcalloc(cnt, sizeof(*(chunk->res)), GFP_KERNEL); if (!chunk->res) return -ENOMEM; diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 2ce40a7ff604..0d74c807110e 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -1526,7 +1526,7 @@ static int ipoib_neigh_hash_init(struct ipoib_dev_priv *priv) return -ENOMEM; set_bit(IPOIB_STOP_NEIGH_GC, &priv->flags); size = roundup_pow_of_two(arp_tbl.gc_thresh3); - buckets = kzalloc(size * sizeof(*buckets), GFP_KERNEL); + buckets = kcalloc(size, sizeof(*buckets), GFP_KERNEL); if (!buckets) { kfree(htbl); return -ENOMEM; @@ -1704,8 +1704,9 @@ static int ipoib_dev_init_default(struct net_device *dev) ipoib_napi_add(dev); /* Allocate RX/TX "rings" to hold queued skbs */ - priv->rx_ring = kzalloc(ipoib_recvq_size * sizeof *priv->rx_ring, - GFP_KERNEL); + priv->rx_ring = kcalloc(ipoib_recvq_size, + sizeof(*priv->rx_ring), + GFP_KERNEL); if (!priv->rx_ring) goto out; diff --git a/drivers/infiniband/ulp/isert/ib_isert.c b/drivers/infiniband/ulp/isert/ib_isert.c index f2f9318e1f49..cccbcf0eb035 100644 --- a/drivers/infiniband/ulp/isert/ib_isert.c +++ b/drivers/infiniband/ulp/isert/ib_isert.c @@ -181,8 +181,9 @@ isert_alloc_rx_descriptors(struct isert_conn *isert_conn) u64 dma_addr; int i, j; - isert_conn->rx_descs = kzalloc(ISERT_QP_MAX_RECV_DTOS * - sizeof(struct iser_rx_desc), GFP_KERNEL); + isert_conn->rx_descs = kcalloc(ISERT_QP_MAX_RECV_DTOS, + sizeof(struct iser_rx_desc), + GFP_KERNEL); if (!isert_conn->rx_descs) return -ENOMEM; diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c index 940d38b08e6b..46406345742b 100644 --- a/drivers/input/keyboard/omap4-keypad.c +++ b/drivers/input/keyboard/omap4-keypad.c @@ -337,7 +337,8 @@ static int omap4_keypad_probe(struct platform_device *pdev) keypad_data->row_shift = get_count_order(keypad_data->cols); max_keys = keypad_data->rows << keypad_data->row_shift; - keypad_data->keymap = kzalloc(max_keys * sizeof(keypad_data->keymap[0]), + keypad_data->keymap = kcalloc(max_keys, + sizeof(keypad_data->keymap[0]), GFP_KERNEL); if (!keypad_data->keymap) { dev_err(&pdev->dev, "Not enough memory for keymap\n"); diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index 4321f7704b23..75456b5aa825 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -1458,7 +1458,7 @@ int dmar_enable_qi(struct intel_iommu *iommu) qi->desc = page_address(desc_page); - qi->desc_status = kzalloc(QI_LENGTH * sizeof(int), GFP_ATOMIC); + qi->desc_status = kcalloc(QI_LENGTH, sizeof(int), GFP_ATOMIC); if (!qi->desc_status) { free_page((unsigned long) qi->desc); kfree(qi); diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 89e49a429c57..14e4b3722428 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3189,7 +3189,7 @@ static int copy_translation_tables(struct intel_iommu *iommu) /* This is too big for the stack - allocate it from slab */ ctxt_table_entries = ext ? 512 : 256; ret = -ENOMEM; - ctxt_tbls = kzalloc(ctxt_table_entries * sizeof(void *), GFP_KERNEL); + ctxt_tbls = kcalloc(ctxt_table_entries, sizeof(void *), GFP_KERNEL); if (!ctxt_tbls) goto out_unmap; @@ -4032,7 +4032,7 @@ static int iommu_suspend(void) unsigned long flag; for_each_active_iommu(iommu, drhd) { - iommu->iommu_state = kzalloc(sizeof(u32) * MAX_SR_DMAR_REGS, + iommu->iommu_state = kcalloc(MAX_SR_DMAR_REGS, sizeof(u32), GFP_ATOMIC); if (!iommu->iommu_state) goto nomem; diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index c33b7b104e72..af4a8e7fcd27 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -1455,7 +1455,7 @@ static int omap_iommu_add_device(struct device *dev) if (num_iommus < 0) return 0; - arch_data = kzalloc((num_iommus + 1) * sizeof(*arch_data), GFP_KERNEL); + arch_data = kcalloc(num_iommus + 1, sizeof(*arch_data), GFP_KERNEL); if (!arch_data) return -ENOMEM; diff --git a/drivers/ipack/carriers/tpci200.c b/drivers/ipack/carriers/tpci200.c index 9b23843dcad4..a16b320739b4 100644 --- a/drivers/ipack/carriers/tpci200.c +++ b/drivers/ipack/carriers/tpci200.c @@ -457,8 +457,8 @@ static int tpci200_install(struct tpci200_board *tpci200) { int res; - tpci200->slots = kzalloc( - TPCI200_NB_SLOT * sizeof(struct tpci200_slot), GFP_KERNEL); + tpci200->slots = kcalloc(TPCI200_NB_SLOT, sizeof(struct tpci200_slot), + GFP_KERNEL); if (tpci200->slots == NULL) return -ENOMEM; diff --git a/drivers/irqchip/irq-alpine-msi.c b/drivers/irqchip/irq-alpine-msi.c index 63d980995d17..23a3b877f7f1 100644 --- a/drivers/irqchip/irq-alpine-msi.c +++ b/drivers/irqchip/irq-alpine-msi.c @@ -268,7 +268,8 @@ static int alpine_msix_init(struct device_node *node, goto err_priv; } - priv->msi_map = kzalloc(sizeof(*priv->msi_map) * BITS_TO_LONGS(priv->num_spis), + priv->msi_map = kcalloc(BITS_TO_LONGS(priv->num_spis), + sizeof(*priv->msi_map), GFP_KERNEL); if (!priv->msi_map) { ret = -ENOMEM; diff --git a/drivers/irqchip/irq-gic-v2m.c b/drivers/irqchip/irq-gic-v2m.c index 1ff38aff9f29..0f52d44b3f69 100644 --- a/drivers/irqchip/irq-gic-v2m.c +++ b/drivers/irqchip/irq-gic-v2m.c @@ -361,7 +361,7 @@ static int __init gicv2m_init_one(struct fwnode_handle *fwnode, break; } - v2m->bm = kzalloc(sizeof(long) * BITS_TO_LONGS(v2m->nr_spis), + v2m->bm = kcalloc(BITS_TO_LONGS(v2m->nr_spis), sizeof(long), GFP_KERNEL); if (!v2m->bm) { ret = -ENOMEM; diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 4e7ce74e558d..5377d7e2afba 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -1239,7 +1239,7 @@ static int its_vlpi_map(struct irq_data *d, struct its_cmd_info *info) if (!its_dev->event_map.vm) { struct its_vlpi_map *maps; - maps = kzalloc(sizeof(*maps) * its_dev->event_map.nr_lpis, + maps = kcalloc(its_dev->event_map.nr_lpis, sizeof(*maps), GFP_KERNEL); if (!maps) { ret = -ENOMEM; @@ -1437,7 +1437,7 @@ static int __init its_lpi_init(u32 id_bits) { lpi_chunks = its_lpi_to_chunk(1UL << id_bits); - lpi_bitmap = kzalloc(BITS_TO_LONGS(lpi_chunks) * sizeof(long), + lpi_bitmap = kcalloc(BITS_TO_LONGS(lpi_chunks), sizeof(long), GFP_KERNEL); if (!lpi_bitmap) { lpi_chunks = 0; @@ -1471,7 +1471,8 @@ static unsigned long *its_lpi_alloc_chunks(int nr_irqs, int *base, int *nr_ids) if (!nr_chunks) goto out; - bitmap = kzalloc(BITS_TO_LONGS(nr_chunks * IRQS_PER_CHUNK) * sizeof (long), + bitmap = kcalloc(BITS_TO_LONGS(nr_chunks * IRQS_PER_CHUNK), + sizeof(long), GFP_ATOMIC); if (!bitmap) goto out; @@ -1823,7 +1824,7 @@ static int its_alloc_tables(struct its_node *its) static int its_alloc_collections(struct its_node *its) { - its->collections = kzalloc(nr_cpu_ids * sizeof(*its->collections), + its->collections = kcalloc(nr_cpu_ids, sizeof(*its->collections), GFP_KERNEL); if (!its->collections) return -ENOMEM; @@ -2124,10 +2125,10 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id, if (alloc_lpis) { lpi_map = its_lpi_alloc_chunks(nvecs, &lpi_base, &nr_lpis); if (lpi_map) - col_map = kzalloc(sizeof(*col_map) * nr_lpis, + col_map = kcalloc(nr_lpis, sizeof(*col_map), GFP_KERNEL); } else { - col_map = kzalloc(sizeof(*col_map) * nr_ites, GFP_KERNEL); + col_map = kcalloc(nr_ites, sizeof(*col_map), GFP_KERNEL); nr_lpis = 0; lpi_base = 0; } @@ -3183,7 +3184,7 @@ static int its_init_vpe_domain(void) its = list_first_entry(&its_nodes, struct its_node, entry); entries = roundup_pow_of_two(nr_cpu_ids); - vpe_proxy.vpes = kzalloc(sizeof(*vpe_proxy.vpes) * entries, + vpe_proxy.vpes = kcalloc(entries, sizeof(*vpe_proxy.vpes), GFP_KERNEL); if (!vpe_proxy.vpes) { pr_err("ITS: Can't allocate GICv4 proxy device array\n"); diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index 5a67ec084588..76ea56d779a1 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -1167,7 +1167,7 @@ static void __init gic_populate_ppi_partitions(struct device_node *gic_node) if (!nr_parts) goto out_put_node; - parts = kzalloc(sizeof(*parts) * nr_parts, GFP_KERNEL); + parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL); if (WARN_ON(!parts)) goto out_put_node; @@ -1289,7 +1289,8 @@ static int __init gic_of_init(struct device_node *node, struct device_node *pare if (of_property_read_u32(node, "#redistributor-regions", &nr_redist_regions)) nr_redist_regions = 1; - rdist_regs = kzalloc(sizeof(*rdist_regs) * nr_redist_regions, GFP_KERNEL); + rdist_regs = kcalloc(nr_redist_regions, sizeof(*rdist_regs), + GFP_KERNEL); if (!rdist_regs) { err = -ENOMEM; goto out_unmap_dist; diff --git a/drivers/irqchip/irq-partition-percpu.c b/drivers/irqchip/irq-partition-percpu.c index ccd72c2cbc23..1f7cc5933cd5 100644 --- a/drivers/irqchip/irq-partition-percpu.c +++ b/drivers/irqchip/irq-partition-percpu.c @@ -229,7 +229,7 @@ struct partition_desc *partition_create_desc(struct fwnode_handle *fwnode, goto out; desc->domain = d; - desc->bitmap = kzalloc(sizeof(long) * BITS_TO_LONGS(nr_parts), + desc->bitmap = kcalloc(BITS_TO_LONGS(nr_parts), sizeof(long), GFP_KERNEL); if (WARN_ON(!desc->bitmap)) goto out; diff --git a/drivers/irqchip/irq-s3c24xx.c b/drivers/irqchip/irq-s3c24xx.c index ec0e6a8cdb75..f6fd57ebe6e6 100644 --- a/drivers/irqchip/irq-s3c24xx.c +++ b/drivers/irqchip/irq-s3c24xx.c @@ -1261,7 +1261,7 @@ static int __init s3c_init_intc_of(struct device_node *np, return -ENOMEM; intc->domain = domain; - intc->irqs = kzalloc(sizeof(struct s3c_irq_data) * 32, + intc->irqs = kcalloc(32, sizeof(struct s3c_irq_data), GFP_KERNEL); if (!intc->irqs) { kfree(intc); diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index baa1ee2bc2ac..6e0c2814d032 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -1260,7 +1260,7 @@ static int __init capinc_tty_init(void) if (capi_ttyminors <= 0) capi_ttyminors = CAPINC_NR_PORTS; - capiminors = kzalloc(sizeof(struct capiminor *) * capi_ttyminors, + capiminors = kcalloc(capi_ttyminors, sizeof(struct capiminor *), GFP_KERNEL); if (!capiminors) return -ENOMEM; diff --git a/drivers/isdn/gigaset/capi.c b/drivers/isdn/gigaset/capi.c index fd13ed44a54e..9cb2ab57fa4a 100644 --- a/drivers/isdn/gigaset/capi.c +++ b/drivers/isdn/gigaset/capi.c @@ -1370,7 +1370,7 @@ static void do_connect_req(struct gigaset_capi_ctr *iif, cmsg->adr.adrPLCI |= (bcs->channel + 1) << 8; /* build command table */ - commands = kzalloc(AT_NUM * (sizeof *commands), GFP_KERNEL); + commands = kcalloc(AT_NUM, sizeof(*commands), GFP_KERNEL); if (!commands) goto oom; diff --git a/drivers/isdn/gigaset/i4l.c b/drivers/isdn/gigaset/i4l.c index 2d75329007f1..b5b389e95edd 100644 --- a/drivers/isdn/gigaset/i4l.c +++ b/drivers/isdn/gigaset/i4l.c @@ -243,7 +243,7 @@ static int command_from_LL(isdn_ctrl *cntrl) dev_kfree_skb(bcs->rx_skb); gigaset_new_rx_skb(bcs); - commands = kzalloc(AT_NUM * (sizeof *commands), GFP_ATOMIC); + commands = kcalloc(AT_NUM, sizeof(*commands), GFP_ATOMIC); if (!commands) { gigaset_free_channel(bcs); dev_err(cs->dev, "ISDN_CMD_DIAL: out of memory\n"); diff --git a/drivers/isdn/hardware/avm/b1.c b/drivers/isdn/hardware/avm/b1.c index 5ee5489d3f15..4ac378e48902 100644 --- a/drivers/isdn/hardware/avm/b1.c +++ b/drivers/isdn/hardware/avm/b1.c @@ -72,7 +72,7 @@ avmcard *b1_alloc_card(int nr_controllers) if (!card) return NULL; - cinfo = kzalloc(sizeof(*cinfo) * nr_controllers, GFP_KERNEL); + cinfo = kcalloc(nr_controllers, sizeof(*cinfo), GFP_KERNEL); if (!cinfo) { kfree(card); return NULL; diff --git a/drivers/isdn/hisax/fsm.c b/drivers/isdn/hisax/fsm.c index 3e020ec0f65e..80ba82f77c63 100644 --- a/drivers/isdn/hisax/fsm.c +++ b/drivers/isdn/hisax/fsm.c @@ -27,7 +27,9 @@ FsmNew(struct Fsm *fsm, struct FsmNode *fnlist, int fncount) int i; fsm->jumpmatrix = - kzalloc(sizeof(FSMFNPTR) * fsm->state_count * fsm->event_count, GFP_KERNEL); + kzalloc(array3_size(sizeof(FSMFNPTR), fsm->state_count, + fsm->event_count), + GFP_KERNEL); if (!fsm->jumpmatrix) return -ENOMEM; diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c index 1644ac52548b..7a501dbe7123 100644 --- a/drivers/isdn/i4l/isdn_common.c +++ b/drivers/isdn/i4l/isdn_common.c @@ -2070,14 +2070,14 @@ isdn_add_channels(isdn_driver_t *d, int drvidx, int n, int adding) if ((adding) && (d->rcverr)) kfree(d->rcverr); - if (!(d->rcverr = kzalloc(sizeof(int) * m, GFP_ATOMIC))) { + if (!(d->rcverr = kcalloc(m, sizeof(int), GFP_ATOMIC))) { printk(KERN_WARNING "register_isdn: Could not alloc rcverr\n"); return -1; } if ((adding) && (d->rcvcount)) kfree(d->rcvcount); - if (!(d->rcvcount = kzalloc(sizeof(int) * m, GFP_ATOMIC))) { + if (!(d->rcvcount = kcalloc(m, sizeof(int), GFP_ATOMIC))) { printk(KERN_WARNING "register_isdn: Could not alloc rcvcount\n"); if (!adding) kfree(d->rcverr); diff --git a/drivers/isdn/mISDN/fsm.c b/drivers/isdn/mISDN/fsm.c index cabcb906e0b5..9a8d08d677a4 100644 --- a/drivers/isdn/mISDN/fsm.c +++ b/drivers/isdn/mISDN/fsm.c @@ -32,8 +32,10 @@ mISDN_FsmNew(struct Fsm *fsm, { int i; - fsm->jumpmatrix = kzalloc(sizeof(FSMFNPTR) * fsm->state_count * - fsm->event_count, GFP_KERNEL); + fsm->jumpmatrix = + kzalloc(array3_size(sizeof(FSMFNPTR), fsm->state_count, + fsm->event_count), + GFP_KERNEL); if (fsm->jumpmatrix == NULL) return -ENOMEM; diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c index f497a77423a2..c7a7c2de0672 100644 --- a/drivers/lightnvm/pblk-init.c +++ b/drivers/lightnvm/pblk-init.c @@ -379,7 +379,7 @@ static int pblk_core_init(struct pblk *pblk) return -EINVAL; } - pblk->pad_dist = kzalloc((pblk->min_write_pgs - 1) * sizeof(atomic64_t), + pblk->pad_dist = kcalloc(pblk->min_write_pgs - 1, sizeof(atomic64_t), GFP_KERNEL); if (!pblk->pad_dist) return -ENOMEM; diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c index fc3c237daef2..311e91b1a14f 100644 --- a/drivers/mailbox/pcc.c +++ b/drivers/mailbox/pcc.c @@ -466,7 +466,8 @@ static int __init acpi_pcc_probe(void) return -EINVAL; } - pcc_mbox_channels = kzalloc(sizeof(struct mbox_chan) * count, GFP_KERNEL); + pcc_mbox_channels = kcalloc(count, sizeof(struct mbox_chan), + GFP_KERNEL); if (!pcc_mbox_channels) { pr_err("Could not allocate space for PCC mbox channels\n"); return -ENOMEM; diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index a31e55bcc4e5..ec5f70d021de 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1715,7 +1715,7 @@ struct cache_set *bch_cache_set_alloc(struct cache_sb *sb) iter_size = (sb->bucket_size / sb->block_size + 1) * sizeof(struct btree_iter_set); - if (!(c->devices = kzalloc(c->nr_uuids * sizeof(void *), GFP_KERNEL)) || + if (!(c->devices = kcalloc(c->nr_uuids, sizeof(void *), GFP_KERNEL)) || mempool_init_slab_pool(&c->search, 32, bch_search_cache) || mempool_init_kmalloc_pool(&c->bio_meta, 2, sizeof(struct bbio) + sizeof(struct bio_vec) * @@ -2043,8 +2043,9 @@ static int cache_alloc(struct cache *ca) !init_heap(&ca->heap, free << 3, GFP_KERNEL) || !(ca->buckets = vzalloc(sizeof(struct bucket) * ca->sb.nbuckets)) || - !(ca->prio_buckets = kzalloc(sizeof(uint64_t) * prio_buckets(ca) * - 2, GFP_KERNEL)) || + !(ca->prio_buckets = kzalloc(array3_size(sizeof(uint64_t), + prio_buckets(ca), 2), + GFP_KERNEL)) || !(ca->disk_buckets = alloc_bucket_pages(GFP_KERNEL, ca))) return -ENOMEM; diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index da02f4d8e4b9..57ca92dc0c3e 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -1878,8 +1878,9 @@ static int crypt_alloc_tfms_skcipher(struct crypt_config *cc, char *ciphermode) unsigned i; int err; - cc->cipher_tfm.tfms = kzalloc(cc->tfms_count * - sizeof(struct crypto_skcipher *), GFP_KERNEL); + cc->cipher_tfm.tfms = kcalloc(cc->tfms_count, + sizeof(struct crypto_skcipher *), + GFP_KERNEL); if (!cc->cipher_tfm.tfms) return -ENOMEM; diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index 01c8329b512d..f983c3fdf204 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -2117,7 +2117,7 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks, pages = DIV_ROUND_UP(chunks, PAGE_COUNTER_RATIO); - new_bp = kzalloc(pages * sizeof(*new_bp), GFP_KERNEL); + new_bp = kcalloc(pages, sizeof(*new_bp), GFP_KERNEL); ret = -ENOMEM; if (!new_bp) { bitmap_file_unmap(&store); diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c index 79bfbc840385..021cbf9ef1bf 100644 --- a/drivers/md/md-cluster.c +++ b/drivers/md/md-cluster.c @@ -1380,9 +1380,9 @@ static int lock_all_bitmaps(struct mddev *mddev) char str[64]; struct md_cluster_info *cinfo = mddev->cluster_info; - cinfo->other_bitmap_lockres = kzalloc((mddev->bitmap_info.nodes - 1) * - sizeof(struct dlm_lock_resource *), - GFP_KERNEL); + cinfo->other_bitmap_lockres = + kcalloc(mddev->bitmap_info.nodes - 1, + sizeof(struct dlm_lock_resource *), GFP_KERNEL); if (!cinfo->other_bitmap_lockres) { pr_err("md: can't alloc mem for other bitmap locks\n"); return 0; diff --git a/drivers/md/md-multipath.c b/drivers/md/md-multipath.c index f71fcdb9b39c..881487de1e25 100644 --- a/drivers/md/md-multipath.c +++ b/drivers/md/md-multipath.c @@ -399,7 +399,8 @@ static int multipath_run (struct mddev *mddev) if (!conf) goto out; - conf->multipaths = kzalloc(sizeof(struct multipath_info)*mddev->raid_disks, + conf->multipaths = kcalloc(mddev->raid_disks, + sizeof(struct multipath_info), GFP_KERNEL); if (!conf->multipaths) goto out_free_conf; diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 65ae47a02218..ac1cffd2a09b 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -159,12 +159,14 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf) } err = -ENOMEM; - conf->strip_zone = kzalloc(sizeof(struct strip_zone)* - conf->nr_strip_zones, GFP_KERNEL); + conf->strip_zone = kcalloc(conf->nr_strip_zones, + sizeof(struct strip_zone), + GFP_KERNEL); if (!conf->strip_zone) goto abort; - conf->devlist = kzalloc(sizeof(struct md_rdev*)* - conf->nr_strip_zones*mddev->raid_disks, + conf->devlist = kzalloc(array3_size(sizeof(struct md_rdev *), + conf->nr_strip_zones, + mddev->raid_disks), GFP_KERNEL); if (!conf->devlist) goto abort; diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index e7c0ecd19234..8e05c1092aef 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -2936,9 +2936,9 @@ static struct r1conf *setup_conf(struct mddev *mddev) if (!conf->barrier) goto abort; - conf->mirrors = kzalloc(sizeof(struct raid1_info) - * mddev->raid_disks * 2, - GFP_KERNEL); + conf->mirrors = kzalloc(array3_size(sizeof(struct raid1_info), + mddev->raid_disks, 2), + GFP_KERNEL); if (!conf->mirrors) goto abort; @@ -3241,7 +3241,8 @@ static int raid1_reshape(struct mddev *mddev) kfree(newpoolinfo); return ret; } - newmirrors = kzalloc(sizeof(struct raid1_info) * raid_disks * 2, + newmirrors = kzalloc(array3_size(sizeof(struct raid1_info), + raid_disks, 2), GFP_KERNEL); if (!newmirrors) { kfree(newpoolinfo); diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index e35db73b9b9e..478cf446827f 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3688,8 +3688,8 @@ static struct r10conf *setup_conf(struct mddev *mddev) goto out; /* FIXME calc properly */ - conf->mirrors = kzalloc(sizeof(struct raid10_info)*(mddev->raid_disks + - max(0,-mddev->delta_disks)), + conf->mirrors = kcalloc(mddev->raid_disks + max(0, -mddev->delta_disks), + sizeof(struct raid10_info), GFP_KERNEL); if (!conf->mirrors) goto out; @@ -4129,11 +4129,10 @@ static int raid10_check_reshape(struct mddev *mddev) conf->mirrors_new = NULL; if (mddev->delta_disks > 0) { /* allocate new 'mirrors' list */ - conf->mirrors_new = kzalloc( - sizeof(struct raid10_info) - *(mddev->raid_disks + - mddev->delta_disks), - GFP_KERNEL); + conf->mirrors_new = + kcalloc(mddev->raid_disks + mddev->delta_disks, + sizeof(struct raid10_info), + GFP_KERNEL); if (!conf->mirrors_new) return -ENOMEM; } diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 73489446bbcb..2031506a0ecd 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -2396,7 +2396,7 @@ static int resize_stripes(struct r5conf *conf, int newsize) * is completely stalled, so now is a good time to resize * conf->disks and the scribble region */ - ndisks = kzalloc(newsize * sizeof(struct disk_info), GFP_NOIO); + ndisks = kcalloc(newsize, sizeof(struct disk_info), GFP_NOIO); if (ndisks) { for (i = 0; i < conf->pool_size; i++) ndisks[i] = conf->disks[i]; @@ -6664,9 +6664,9 @@ static int alloc_thread_groups(struct r5conf *conf, int cnt, } *group_cnt = num_possible_nodes(); size = sizeof(struct r5worker) * cnt; - workers = kzalloc(size * *group_cnt, GFP_NOIO); - *worker_groups = kzalloc(sizeof(struct r5worker_group) * - *group_cnt, GFP_NOIO); + workers = kcalloc(size, *group_cnt, GFP_NOIO); + *worker_groups = kcalloc(*group_cnt, sizeof(struct r5worker_group), + GFP_NOIO); if (!*worker_groups || !workers) { kfree(workers); kfree(*worker_groups); @@ -6894,8 +6894,9 @@ static struct r5conf *setup_conf(struct mddev *mddev) goto abort; INIT_LIST_HEAD(&conf->free_list); INIT_LIST_HEAD(&conf->pending_list); - conf->pending_data = kzalloc(sizeof(struct r5pending_data) * - PENDING_IO_MAX, GFP_KERNEL); + conf->pending_data = kcalloc(PENDING_IO_MAX, + sizeof(struct r5pending_data), + GFP_KERNEL); if (!conf->pending_data) goto abort; for (i = 0; i < PENDING_IO_MAX; i++) @@ -6944,7 +6945,7 @@ static struct r5conf *setup_conf(struct mddev *mddev) conf->previous_raid_disks = mddev->raid_disks - mddev->delta_disks; max_disks = max(conf->raid_disks, conf->previous_raid_disks); - conf->disks = kzalloc(max_disks * sizeof(struct disk_info), + conf->disks = kcalloc(max_disks, sizeof(struct disk_info), GFP_KERNEL); if (!conf->disks) diff --git a/drivers/media/dvb-frontends/dib7000p.c b/drivers/media/dvb-frontends/dib7000p.c index 902af482448e..5a8dbc0b25fb 100644 --- a/drivers/media/dvb-frontends/dib7000p.c +++ b/drivers/media/dvb-frontends/dib7000p.c @@ -2018,10 +2018,10 @@ static int dib7000pc_detection(struct i2c_adapter *i2c_adap) }; int ret = 0; - tx = kzalloc(2*sizeof(u8), GFP_KERNEL); + tx = kzalloc(2, GFP_KERNEL); if (!tx) return -ENOMEM; - rx = kzalloc(2*sizeof(u8), GFP_KERNEL); + rx = kzalloc(2, GFP_KERNEL); if (!rx) { ret = -ENOMEM; goto rx_memory_error; diff --git a/drivers/media/dvb-frontends/dib8000.c b/drivers/media/dvb-frontends/dib8000.c index 6f35173d2968..22eec8f65485 100644 --- a/drivers/media/dvb-frontends/dib8000.c +++ b/drivers/media/dvb-frontends/dib8000.c @@ -4271,12 +4271,12 @@ static int dib8000_i2c_enumeration(struct i2c_adapter *host, int no_of_demods, u8 new_addr = 0; struct i2c_device client = {.adap = host }; - client.i2c_write_buffer = kzalloc(4 * sizeof(u8), GFP_KERNEL); + client.i2c_write_buffer = kzalloc(4, GFP_KERNEL); if (!client.i2c_write_buffer) { dprintk("%s: not enough memory\n", __func__); return -ENOMEM; } - client.i2c_read_buffer = kzalloc(4 * sizeof(u8), GFP_KERNEL); + client.i2c_read_buffer = kzalloc(4, GFP_KERNEL); if (!client.i2c_read_buffer) { dprintk("%s: not enough memory\n", __func__); ret = -ENOMEM; diff --git a/drivers/media/dvb-frontends/dib9000.c b/drivers/media/dvb-frontends/dib9000.c index f9289f488de7..b8edb55696bb 100644 --- a/drivers/media/dvb-frontends/dib9000.c +++ b/drivers/media/dvb-frontends/dib9000.c @@ -2381,12 +2381,12 @@ int dib9000_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, u8 defaul u8 new_addr = 0; struct i2c_device client = {.i2c_adap = i2c }; - client.i2c_write_buffer = kzalloc(4 * sizeof(u8), GFP_KERNEL); + client.i2c_write_buffer = kzalloc(4, GFP_KERNEL); if (!client.i2c_write_buffer) { dprintk("%s: not enough memory\n", __func__); return -ENOMEM; } - client.i2c_read_buffer = kzalloc(4 * sizeof(u8), GFP_KERNEL); + client.i2c_read_buffer = kzalloc(4, GFP_KERNEL); if (!client.i2c_read_buffer) { dprintk("%s: not enough memory\n", __func__); ret = -ENOMEM; diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index 964cd7bcdd2c..70e187971590 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -217,14 +217,14 @@ static int au0828_init_isoc(struct au0828_dev *dev, int max_packets, dev->isoc_ctl.isoc_copy = isoc_copy; dev->isoc_ctl.num_bufs = num_bufs; - dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL); + dev->isoc_ctl.urb = kcalloc(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->isoc_ctl.urb) { au0828_isocdbg("cannot alloc memory for usb buffers\n"); return -ENOMEM; } - dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs, - GFP_KERNEL); + dev->isoc_ctl.transfer_buffer = kcalloc(num_bufs, sizeof(void *), + GFP_KERNEL); if (!dev->isoc_ctl.transfer_buffer) { au0828_isocdbg("cannot allocate memory for usb transfer\n"); kfree(dev->isoc_ctl.urb); diff --git a/drivers/media/usb/cx231xx/cx231xx-core.c b/drivers/media/usb/cx231xx/cx231xx-core.c index 4f43668df15d..53d846dea3d2 100644 --- a/drivers/media/usb/cx231xx/cx231xx-core.c +++ b/drivers/media/usb/cx231xx/cx231xx-core.c @@ -1034,7 +1034,7 @@ int cx231xx_init_isoc(struct cx231xx *dev, int max_packets, dma_q->partial_buf[i] = 0; dev->video_mode.isoc_ctl.urb = - kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL); + kcalloc(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->video_mode.isoc_ctl.urb) { dev_err(dev->dev, "cannot alloc memory for usb buffers\n"); @@ -1042,7 +1042,7 @@ int cx231xx_init_isoc(struct cx231xx *dev, int max_packets, } dev->video_mode.isoc_ctl.transfer_buffer = - kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL); + kcalloc(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->video_mode.isoc_ctl.transfer_buffer) { dev_err(dev->dev, "cannot allocate memory for usbtransfer\n"); @@ -1169,7 +1169,7 @@ int cx231xx_init_bulk(struct cx231xx *dev, int max_packets, dma_q->partial_buf[i] = 0; dev->video_mode.bulk_ctl.urb = - kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL); + kcalloc(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->video_mode.bulk_ctl.urb) { dev_err(dev->dev, "cannot alloc memory for usb buffers\n"); @@ -1177,7 +1177,7 @@ int cx231xx_init_bulk(struct cx231xx *dev, int max_packets, } dev->video_mode.bulk_ctl.transfer_buffer = - kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL); + kcalloc(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->video_mode.bulk_ctl.transfer_buffer) { dev_err(dev->dev, "cannot allocate memory for usbtransfer\n"); diff --git a/drivers/media/usb/cx231xx/cx231xx-vbi.c b/drivers/media/usb/cx231xx/cx231xx-vbi.c index d3bfe8e23b1f..b621cf1aa96b 100644 --- a/drivers/media/usb/cx231xx/cx231xx-vbi.c +++ b/drivers/media/usb/cx231xx/cx231xx-vbi.c @@ -415,7 +415,7 @@ int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets, for (i = 0; i < 8; i++) dma_q->partial_buf[i] = 0; - dev->vbi_mode.bulk_ctl.urb = kzalloc(sizeof(void *) * num_bufs, + dev->vbi_mode.bulk_ctl.urb = kcalloc(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->vbi_mode.bulk_ctl.urb) { dev_err(dev->dev, @@ -424,7 +424,7 @@ int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets, } dev->vbi_mode.bulk_ctl.transfer_buffer = - kzalloc(sizeof(void *) * num_bufs, GFP_KERNEL); + kcalloc(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->vbi_mode.bulk_ctl.transfer_buffer) { dev_err(dev->dev, "cannot allocate memory for usbtransfer\n"); diff --git a/drivers/media/usb/go7007/go7007-fw.c b/drivers/media/usb/go7007/go7007-fw.c index 87b4fc48ef09..24f5b615dc7a 100644 --- a/drivers/media/usb/go7007/go7007-fw.c +++ b/drivers/media/usb/go7007/go7007-fw.c @@ -1579,7 +1579,7 @@ int go7007_construct_fw_image(struct go7007 *go, u8 **fw, int *fwlen) GO7007_FW_NAME); return -1; } - code = kzalloc(codespace * 2, GFP_KERNEL); + code = kcalloc(codespace, 2, GFP_KERNEL); if (code == NULL) goto fw_failed; diff --git a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c index e0353161ccd6..a8519da0020b 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-hdw.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-hdw.c @@ -2413,7 +2413,7 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf, hdw->control_cnt = CTRLDEF_COUNT; hdw->control_cnt += MPEGDEF_COUNT; - hdw->controls = kzalloc(sizeof(struct pvr2_ctrl) * hdw->control_cnt, + hdw->controls = kcalloc(hdw->control_cnt, sizeof(struct pvr2_ctrl), GFP_KERNEL); if (!hdw->controls) goto fail; hdw->hdw_desc = hdw_desc; diff --git a/drivers/media/usb/pvrusb2/pvrusb2-std.c b/drivers/media/usb/pvrusb2/pvrusb2-std.c index 21bb20dba82c..6b651f8b54df 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-std.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-std.c @@ -361,7 +361,7 @@ struct v4l2_standard *pvr2_std_create_enum(unsigned int *countptr, std_cnt); if (!std_cnt) return NULL; // paranoia - stddefs = kzalloc(sizeof(struct v4l2_standard) * std_cnt, + stddefs = kcalloc(std_cnt, sizeof(struct v4l2_standard), GFP_KERNEL); if (!stddefs) return NULL; diff --git a/drivers/media/usb/stk1160/stk1160-video.c b/drivers/media/usb/stk1160/stk1160-video.c index 423c03a0638d..2811f612820f 100644 --- a/drivers/media/usb/stk1160/stk1160-video.c +++ b/drivers/media/usb/stk1160/stk1160-video.c @@ -439,14 +439,14 @@ int stk1160_alloc_isoc(struct stk1160 *dev) dev->isoc_ctl.buf = NULL; dev->isoc_ctl.max_pkt_size = dev->max_pkt_size; - dev->isoc_ctl.urb = kzalloc(sizeof(void *)*num_bufs, GFP_KERNEL); + dev->isoc_ctl.urb = kcalloc(num_bufs, sizeof(void *), GFP_KERNEL); if (!dev->isoc_ctl.urb) { stk1160_err("out of memory for urb array\n"); return -ENOMEM; } - dev->isoc_ctl.transfer_buffer = kzalloc(sizeof(void *)*num_bufs, - GFP_KERNEL); + dev->isoc_ctl.transfer_buffer = kcalloc(num_bufs, sizeof(void *), + GFP_KERNEL); if (!dev->isoc_ctl.transfer_buffer) { stk1160_err("out of memory for usb transfers\n"); kfree(dev->isoc_ctl.urb); diff --git a/drivers/media/usb/stkwebcam/stk-webcam.c b/drivers/media/usb/stkwebcam/stk-webcam.c index 22389b56ec24..5accb5241072 100644 --- a/drivers/media/usb/stkwebcam/stk-webcam.c +++ b/drivers/media/usb/stkwebcam/stk-webcam.c @@ -567,8 +567,9 @@ static int stk_prepare_sio_buffers(struct stk_camera *dev, unsigned n_sbufs) if (dev->sio_bufs != NULL) pr_err("sio_bufs already allocated\n"); else { - dev->sio_bufs = kzalloc(n_sbufs * sizeof(struct stk_sio_buffer), - GFP_KERNEL); + dev->sio_bufs = kcalloc(n_sbufs, + sizeof(struct stk_sio_buffer), + GFP_KERNEL); if (dev->sio_bufs == NULL) return -ENOMEM; for (i = 0; i < n_sbufs; i++) { diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c index ce79df643c7e..36a9a4017185 100644 --- a/drivers/media/usb/usbtv/usbtv-video.c +++ b/drivers/media/usb/usbtv/usbtv-video.c @@ -507,7 +507,7 @@ static struct urb *usbtv_setup_iso_transfer(struct usbtv *usbtv) ip->pipe = usb_rcvisocpipe(usbtv->udev, USBTV_VIDEO_ENDP); ip->interval = 1; ip->transfer_flags = URB_ISO_ASAP; - ip->transfer_buffer = kzalloc(size * USBTV_ISOC_PACKETS, + ip->transfer_buffer = kcalloc(USBTV_ISOC_PACKETS, size, GFP_KERNEL); if (!ip->transfer_buffer) { usb_free_urb(ip); diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c index 4199cdd4ff89..306e1fd109bd 100644 --- a/drivers/mfd/cros_ec_dev.c +++ b/drivers/mfd/cros_ec_dev.c @@ -299,13 +299,14 @@ static void cros_ec_sensors_register(struct cros_ec_dev *ec) resp = (struct ec_response_motion_sense *)msg->data; sensor_num = resp->dump.sensor_count; /* Allocate 1 extra sensors in FIFO are needed */ - sensor_cells = kzalloc(sizeof(struct mfd_cell) * (sensor_num + 1), + sensor_cells = kcalloc(sensor_num + 1, sizeof(struct mfd_cell), GFP_KERNEL); if (sensor_cells == NULL) goto error; - sensor_platforms = kzalloc(sizeof(struct cros_ec_sensor_platform) * - (sensor_num + 1), GFP_KERNEL); + sensor_platforms = kcalloc(sensor_num + 1, + sizeof(struct cros_ec_sensor_platform), + GFP_KERNEL); if (sensor_platforms == NULL) goto error_platforms; diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c index c57e407020f1..94e3f32ce935 100644 --- a/drivers/mfd/mfd-core.c +++ b/drivers/mfd/mfd-core.c @@ -158,7 +158,7 @@ static int mfd_add_device(struct device *parent, int id, if (!pdev) goto fail_alloc; - res = kzalloc(sizeof(*res) * cell->num_resources, GFP_KERNEL); + res = kcalloc(cell->num_resources, sizeof(*res), GFP_KERNEL); if (!res) goto fail_device; diff --git a/drivers/mfd/timberdale.c b/drivers/mfd/timberdale.c index 7c13d2e7061c..05ecf828b2ab 100644 --- a/drivers/mfd/timberdale.c +++ b/drivers/mfd/timberdale.c @@ -707,8 +707,8 @@ static int timb_probe(struct pci_dev *dev, goto err_config; } - msix_entries = kzalloc(TIMBERDALE_NR_IRQS * sizeof(*msix_entries), - GFP_KERNEL); + msix_entries = kcalloc(TIMBERDALE_NR_IRQS, sizeof(*msix_entries), + GFP_KERNEL); if (!msix_entries) goto err_config; diff --git a/drivers/misc/altera-stapl/altera.c b/drivers/misc/altera-stapl/altera.c index f53e217e963f..ef83a9078646 100644 --- a/drivers/misc/altera-stapl/altera.c +++ b/drivers/misc/altera-stapl/altera.c @@ -304,13 +304,13 @@ static int altera_execute(struct altera_state *astate, if (sym_count <= 0) goto exit_done; - vars = kzalloc(sym_count * sizeof(long), GFP_KERNEL); + vars = kcalloc(sym_count, sizeof(long), GFP_KERNEL); if (vars == NULL) status = -ENOMEM; if (status == 0) { - var_size = kzalloc(sym_count * sizeof(s32), GFP_KERNEL); + var_size = kcalloc(sym_count, sizeof(s32), GFP_KERNEL); if (var_size == NULL) status = -ENOMEM; @@ -1136,7 +1136,7 @@ exit_done: /* Allocate a writable buffer for this array */ count = var_size[variable_id]; long_tmp = vars[variable_id]; - longptr_tmp = kzalloc(count * sizeof(long), + longptr_tmp = kcalloc(count, sizeof(long), GFP_KERNEL); vars[variable_id] = (long)longptr_tmp; diff --git a/drivers/misc/cxl/guest.c b/drivers/misc/cxl/guest.c index f58b4b6c79f2..4644f16606a3 100644 --- a/drivers/misc/cxl/guest.c +++ b/drivers/misc/cxl/guest.c @@ -89,7 +89,7 @@ static ssize_t guest_collect_vpd(struct cxl *adapter, struct cxl_afu *afu, mod = 0; } - vpd_buf = kzalloc(entries * sizeof(unsigned long *), GFP_KERNEL); + vpd_buf = kcalloc(entries, sizeof(unsigned long *), GFP_KERNEL); if (!vpd_buf) return -ENOMEM; diff --git a/drivers/misc/cxl/of.c b/drivers/misc/cxl/of.c index ec175ea5dfba..aff181cd0bf2 100644 --- a/drivers/misc/cxl/of.c +++ b/drivers/misc/cxl/of.c @@ -302,7 +302,7 @@ static int read_adapter_irq_config(struct cxl *adapter, struct device_node *np) if (nranges == 0 || (nranges * 2 * sizeof(int)) != len) return -EINVAL; - adapter->guest->irq_avail = kzalloc(nranges * sizeof(struct irq_avail), + adapter->guest->irq_avail = kcalloc(nranges, sizeof(struct irq_avail), GFP_KERNEL); if (adapter->guest->irq_avail == NULL) return -ENOMEM; diff --git a/drivers/misc/genwqe/card_ddcb.c b/drivers/misc/genwqe/card_ddcb.c index b7f8d35c17a9..656449cb4476 100644 --- a/drivers/misc/genwqe/card_ddcb.c +++ b/drivers/misc/genwqe/card_ddcb.c @@ -1048,15 +1048,16 @@ static int setup_ddcb_queue(struct genwqe_dev *cd, struct ddcb_queue *queue) "[%s] **err: could not allocate DDCB **\n", __func__); return -ENOMEM; } - queue->ddcb_req = kzalloc(sizeof(struct ddcb_requ *) * - queue->ddcb_max, GFP_KERNEL); + queue->ddcb_req = kcalloc(queue->ddcb_max, sizeof(struct ddcb_requ *), + GFP_KERNEL); if (!queue->ddcb_req) { rc = -ENOMEM; goto free_ddcbs; } - queue->ddcb_waitqs = kzalloc(sizeof(wait_queue_head_t) * - queue->ddcb_max, GFP_KERNEL); + queue->ddcb_waitqs = kcalloc(queue->ddcb_max, + sizeof(wait_queue_head_t), + GFP_KERNEL); if (!queue->ddcb_waitqs) { rc = -ENOMEM; goto free_requs; diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c index 0c775d6fcf59..83fc748a91a7 100644 --- a/drivers/misc/sgi-xp/xpc_main.c +++ b/drivers/misc/sgi-xp/xpc_main.c @@ -416,7 +416,8 @@ xpc_setup_ch_structures(struct xpc_partition *part) * memory. */ DBUG_ON(part->channels != NULL); - part->channels = kzalloc(sizeof(struct xpc_channel) * XPC_MAX_NCHANNELS, + part->channels = kcalloc(XPC_MAX_NCHANNELS, + sizeof(struct xpc_channel), GFP_KERNEL); if (part->channels == NULL) { dev_err(xpc_chan, "can't get memory for channels\n"); @@ -905,8 +906,9 @@ xpc_setup_partitions(void) short partid; struct xpc_partition *part; - xpc_partitions = kzalloc(sizeof(struct xpc_partition) * - xp_max_npartitions, GFP_KERNEL); + xpc_partitions = kcalloc(xp_max_npartitions, + sizeof(struct xpc_partition), + GFP_KERNEL); if (xpc_partitions == NULL) { dev_err(xpc_part, "can't get memory for partition structure\n"); return -ENOMEM; diff --git a/drivers/misc/sgi-xp/xpc_partition.c b/drivers/misc/sgi-xp/xpc_partition.c index 6956f7e7d439..7284413dabfd 100644 --- a/drivers/misc/sgi-xp/xpc_partition.c +++ b/drivers/misc/sgi-xp/xpc_partition.c @@ -425,7 +425,7 @@ xpc_discovery(void) if (remote_rp == NULL) return; - discovered_nasids = kzalloc(sizeof(long) * xpc_nasid_mask_nlongs, + discovered_nasids = kcalloc(xpc_nasid_mask_nlongs, sizeof(long), GFP_KERNEL); if (discovered_nasids == NULL) { kfree(remote_rp_base); diff --git a/drivers/misc/sgi-xp/xpnet.c b/drivers/misc/sgi-xp/xpnet.c index 216d5c756236..44d750d98bc8 100644 --- a/drivers/misc/sgi-xp/xpnet.c +++ b/drivers/misc/sgi-xp/xpnet.c @@ -520,8 +520,9 @@ xpnet_init(void) dev_info(xpnet, "registering network device %s\n", XPNET_DEVICE_NAME); - xpnet_broadcast_partitions = kzalloc(BITS_TO_LONGS(xp_max_npartitions) * - sizeof(long), GFP_KERNEL); + xpnet_broadcast_partitions = kcalloc(BITS_TO_LONGS(xp_max_npartitions), + sizeof(long), + GFP_KERNEL); if (xpnet_broadcast_partitions == NULL) return -ENOMEM; diff --git a/drivers/misc/sram.c b/drivers/misc/sram.c index fc0415771c00..e2e31b65bc5a 100644 --- a/drivers/misc/sram.c +++ b/drivers/misc/sram.c @@ -185,7 +185,7 @@ static int sram_reserve_regions(struct sram_dev *sram, struct resource *res) * after the reserved blocks from the dt are processed. */ nblocks = (np) ? of_get_available_child_count(np) + 1 : 1; - rblocks = kzalloc((nblocks) * sizeof(*rblocks), GFP_KERNEL); + rblocks = kcalloc(nblocks, sizeof(*rblocks), GFP_KERNEL); if (!rblocks) return -ENOMEM; diff --git a/drivers/mtd/ar7part.c b/drivers/mtd/ar7part.c index 90575deff0ae..fc15ec58230a 100644 --- a/drivers/mtd/ar7part.c +++ b/drivers/mtd/ar7part.c @@ -55,7 +55,7 @@ static int create_mtd_partitions(struct mtd_info *master, int retries = 10; struct mtd_partition *ar7_parts; - ar7_parts = kzalloc(sizeof(*ar7_parts) * AR7_PARTS, GFP_KERNEL); + ar7_parts = kcalloc(AR7_PARTS, sizeof(*ar7_parts), GFP_KERNEL); if (!ar7_parts) return -ENOMEM; ar7_parts[0].name = "loader"; diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c index 0f93d2239352..fc424b185b08 100644 --- a/drivers/mtd/bcm47xxpart.c +++ b/drivers/mtd/bcm47xxpart.c @@ -110,7 +110,7 @@ static int bcm47xxpart_parse(struct mtd_info *master, blocksize = 0x1000; /* Alloc */ - parts = kzalloc(sizeof(struct mtd_partition) * BCM47XXPART_MAX_PARTS, + parts = kcalloc(BCM47XXPART_MAX_PARTS, sizeof(struct mtd_partition), GFP_KERNEL); if (!parts) return -ENOMEM; diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 5a81bd8073bc..6e8e7b1bb34b 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -608,8 +608,9 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd) mtd->size = devsize * cfi->numchips; mtd->numeraseregions = cfi->cfiq->NumEraseRegions * cfi->numchips; - mtd->eraseregions = kzalloc(sizeof(struct mtd_erase_region_info) - * mtd->numeraseregions, GFP_KERNEL); + mtd->eraseregions = kcalloc(mtd->numeraseregions, + sizeof(struct mtd_erase_region_info), + GFP_KERNEL); if (!mtd->eraseregions) goto setup_err; diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index 22506d22194e..a0c655628d6d 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -2636,7 +2636,7 @@ static int __maybe_unused cfi_ppb_unlock(struct mtd_info *mtd, loff_t ofs, * first check the locking status of all sectors and save * it for future use. */ - sect = kzalloc(MAX_SECTORS * sizeof(struct ppb_lock), GFP_KERNEL); + sect = kcalloc(MAX_SECTORS, sizeof(struct ppb_lock), GFP_KERNEL); if (!sect) return -ENOMEM; diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c index 802d8f159e90..a0d485f52cbe 100644 --- a/drivers/mtd/devices/docg3.c +++ b/drivers/mtd/devices/docg3.c @@ -1827,7 +1827,7 @@ doc_probe_device(struct docg3_cascade *cascade, int floor, struct device *dev) mtd->dev.parent = dev; bbt_nbpages = DIV_ROUND_UP(docg3->max_block + 1, 8 * DOC_LAYOUT_PAGE_SIZE); - docg3->bbt = kzalloc(bbt_nbpages * DOC_LAYOUT_PAGE_SIZE, GFP_KERNEL); + docg3->bbt = kcalloc(DOC_LAYOUT_PAGE_SIZE, bbt_nbpages, GFP_KERNEL); if (!docg3->bbt) goto nomem3; diff --git a/drivers/mtd/maps/physmap_of_core.c b/drivers/mtd/maps/physmap_of_core.c index 527b1682381f..4129535b8e46 100644 --- a/drivers/mtd/maps/physmap_of_core.c +++ b/drivers/mtd/maps/physmap_of_core.c @@ -124,7 +124,7 @@ static const char * const *of_get_probes(struct device_node *dp) if (count < 0) return part_probe_types_def; - res = kzalloc((count + 1) * sizeof(*res), GFP_KERNEL); + res = kcalloc(count + 1, sizeof(*res), GFP_KERNEL); if (!res) return NULL; @@ -197,7 +197,7 @@ static int of_flash_probe(struct platform_device *dev) dev_set_drvdata(&dev->dev, info); - mtd_list = kzalloc(sizeof(*mtd_list) * count, GFP_KERNEL); + mtd_list = kcalloc(count, sizeof(*mtd_list), GFP_KERNEL); if (!mtd_list) goto err_flash_remove; diff --git a/drivers/mtd/nand/onenand/onenand_base.c b/drivers/mtd/nand/onenand/onenand_base.c index b7105192cb12..4ca4b194e7d7 100644 --- a/drivers/mtd/nand/onenand/onenand_base.c +++ b/drivers/mtd/nand/onenand/onenand_base.c @@ -3721,8 +3721,10 @@ static int onenand_probe(struct mtd_info *mtd) this->dies = ONENAND_IS_DDP(this) ? 2 : 1; /* Maximum possible erase regions */ mtd->numeraseregions = this->dies << 1; - mtd->eraseregions = kzalloc(sizeof(struct mtd_erase_region_info) - * (this->dies << 1), GFP_KERNEL); + mtd->eraseregions = + kcalloc(this->dies << 1, + sizeof(struct mtd_erase_region_info), + GFP_KERNEL); if (!mtd->eraseregions) return -ENOMEM; } diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c index 615f8c173162..6b21a92d3622 100644 --- a/drivers/mtd/ofpart.c +++ b/drivers/mtd/ofpart.c @@ -71,7 +71,7 @@ static int parse_fixed_partitions(struct mtd_info *master, if (nr_parts == 0) return 0; - parts = kzalloc(nr_parts * sizeof(*parts), GFP_KERNEL); + parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL); if (!parts) return -ENOMEM; @@ -177,7 +177,7 @@ static int parse_ofoldpart_partitions(struct mtd_info *master, nr_parts = plen / sizeof(part[0]); - parts = kzalloc(nr_parts * sizeof(*parts), GFP_KERNEL); + parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL); if (!parts) return -ENOMEM; diff --git a/drivers/mtd/parsers/parser_trx.c b/drivers/mtd/parsers/parser_trx.c index df360a75e1eb..17ac33599783 100644 --- a/drivers/mtd/parsers/parser_trx.c +++ b/drivers/mtd/parsers/parser_trx.c @@ -62,7 +62,7 @@ static int parser_trx_parse(struct mtd_info *mtd, uint8_t curr_part = 0, i = 0; int err; - parts = kzalloc(sizeof(struct mtd_partition) * TRX_PARSER_MAX_PARTS, + parts = kcalloc(TRX_PARSER_MAX_PARTS, sizeof(struct mtd_partition), GFP_KERNEL); if (!parts) return -ENOMEM; diff --git a/drivers/mtd/parsers/sharpslpart.c b/drivers/mtd/parsers/sharpslpart.c index 8893dc82a5c8..e5ea6127ab5a 100644 --- a/drivers/mtd/parsers/sharpslpart.c +++ b/drivers/mtd/parsers/sharpslpart.c @@ -362,8 +362,9 @@ static int sharpsl_parse_mtd_partitions(struct mtd_info *master, return err; } - sharpsl_nand_parts = kzalloc(sizeof(*sharpsl_nand_parts) * - SHARPSL_NAND_PARTS, GFP_KERNEL); + sharpsl_nand_parts = kcalloc(SHARPSL_NAND_PARTS, + sizeof(*sharpsl_nand_parts), + GFP_KERNEL); if (!sharpsl_nand_parts) return -ENOMEM; diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c index 9d019ce1589e..f3bd86e13603 100644 --- a/drivers/mtd/sm_ftl.c +++ b/drivers/mtd/sm_ftl.c @@ -82,7 +82,7 @@ static struct attribute_group *sm_create_sysfs_attributes(struct sm_ftl *ftl) /* Create array of pointers to the attributes */ - attributes = kzalloc(sizeof(struct attribute *) * (NUM_ATTRIBUTES + 1), + attributes = kcalloc(NUM_ATTRIBUTES + 1, sizeof(struct attribute *), GFP_KERNEL); if (!attributes) goto error3; @@ -1137,7 +1137,7 @@ static void sm_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) goto error2; /* Allocate zone array, it will be initialized on demand */ - ftl->zones = kzalloc(sizeof(struct ftl_zone) * ftl->zone_count, + ftl->zones = kcalloc(ftl->zone_count, sizeof(struct ftl_zone), GFP_KERNEL); if (!ftl->zones) goto error3; diff --git a/drivers/mtd/tests/pagetest.c b/drivers/mtd/tests/pagetest.c index bc303cac9f43..75687369bc20 100644 --- a/drivers/mtd/tests/pagetest.c +++ b/drivers/mtd/tests/pagetest.c @@ -127,7 +127,7 @@ static int crosstest(void) unsigned char *pp1, *pp2, *pp3, *pp4; pr_info("crosstest\n"); - pp1 = kzalloc(pgsize * 4, GFP_KERNEL); + pp1 = kcalloc(pgsize, 4, GFP_KERNEL); if (!pp1) return -ENOMEM; pp2 = pp1 + pgsize; diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index f66b3b22f328..6f2ac865ff05 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -1592,7 +1592,7 @@ int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai) sprintf(ubi->bgt_name, UBI_BGT_NAME_PATTERN, ubi->ubi_num); err = -ENOMEM; - ubi->lookuptbl = kzalloc(ubi->peb_count * sizeof(void *), GFP_KERNEL); + ubi->lookuptbl = kcalloc(ubi->peb_count, sizeof(void *), GFP_KERNEL); if (!ubi->lookuptbl) return err; diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index bd53a71f6b00..63e3844c5bec 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -2418,7 +2418,7 @@ struct bond_vlan_tag *bond_verify_device_path(struct net_device *start_dev, struct list_head *iter; if (start_dev == end_dev) { - tags = kzalloc(sizeof(*tags) * (level + 1), GFP_ATOMIC); + tags = kcalloc(level + 1, sizeof(*tags), GFP_ATOMIC); if (!tags) return ERR_PTR(-ENOMEM); tags[level].vlan_proto = VLAN_N_VID; diff --git a/drivers/net/can/grcan.c b/drivers/net/can/grcan.c index 2d3046afa80d..7eec1d9f86a0 100644 --- a/drivers/net/can/grcan.c +++ b/drivers/net/can/grcan.c @@ -1057,7 +1057,7 @@ static int grcan_open(struct net_device *dev) return err; } - priv->echo_skb = kzalloc(dma->tx.size * sizeof(*priv->echo_skb), + priv->echo_skb = kcalloc(dma->tx.size, sizeof(*priv->echo_skb), GFP_KERNEL); if (!priv->echo_skb) { err = -ENOMEM; @@ -1066,7 +1066,7 @@ static int grcan_open(struct net_device *dev) priv->can.echo_skb_max = dma->tx.size; priv->can.echo_skb = priv->echo_skb; - priv->txdlc = kzalloc(dma->tx.size * sizeof(*priv->txdlc), GFP_KERNEL); + priv->txdlc = kcalloc(dma->tx.size, sizeof(*priv->txdlc), GFP_KERNEL); if (!priv->txdlc) { err = -ENOMEM; goto exit_free_echo_skb; diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c index 89d60d8e467c..aa97dbc797b6 100644 --- a/drivers/net/can/slcan.c +++ b/drivers/net/can/slcan.c @@ -703,7 +703,7 @@ static int __init slcan_init(void) pr_info("slcan: serial line CAN interface driver\n"); pr_info("slcan: %d dynamic interface channels.\n", maxdev); - slcan_devs = kzalloc(sizeof(struct net_device *)*maxdev, GFP_KERNEL); + slcan_devs = kcalloc(maxdev, sizeof(struct net_device *), GFP_KERNEL); if (!slcan_devs) return -ENOMEM; diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c index 14a59e51db67..897302adc38e 100644 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -2150,7 +2150,7 @@ static int bcm_enetsw_open(struct net_device *dev) priv->tx_desc_alloc_size = size; priv->tx_desc_cpu = p; - priv->tx_skb = kzalloc(sizeof(struct sk_buff *) * priv->tx_ring_size, + priv->tx_skb = kcalloc(priv->tx_ring_size, sizeof(struct sk_buff *), GFP_KERNEL); if (!priv->tx_skb) { dev_err(kdev, "cannot allocate rx skb queue\n"); @@ -2164,7 +2164,7 @@ static int bcm_enetsw_open(struct net_device *dev) spin_lock_init(&priv->tx_lock); /* init & fill rx ring with skbs */ - priv->rx_skb = kzalloc(sizeof(struct sk_buff *) * priv->rx_ring_size, + priv->rx_skb = kcalloc(priv->rx_ring_size, sizeof(struct sk_buff *), GFP_KERNEL); if (!priv->rx_skb) { dev_err(kdev, "cannot allocate rx skb queue\n"); diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c index ffa7959f6b31..dc77bfded865 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c @@ -571,7 +571,7 @@ int bnx2x_vf_mcast(struct bnx2x *bp, struct bnx2x_virtf *vf, else set_bit(RAMROD_COMP_WAIT, &mcast.ramrod_flags); if (mc_num) { - mc = kzalloc(mc_num * sizeof(struct bnx2x_mcast_list_elem), + mc = kcalloc(mc_num, sizeof(struct bnx2x_mcast_list_elem), GFP_KERNEL); if (!mc) { BNX2X_ERR("Cannot Configure multicasts due to lack of memory\n"); @@ -1253,8 +1253,9 @@ int bnx2x_iov_init_one(struct bnx2x *bp, int int_mode_param, num_vfs_param, iov->nr_virtfn); /* allocate the vf array */ - bp->vfdb->vfs = kzalloc(sizeof(struct bnx2x_virtf) * - BNX2X_NR_VIRTFN(bp), GFP_KERNEL); + bp->vfdb->vfs = kcalloc(BNX2X_NR_VIRTFN(bp), + sizeof(struct bnx2x_virtf), + GFP_KERNEL); if (!bp->vfdb->vfs) { BNX2X_ERR("failed to allocate vf array\n"); err = -ENOMEM; @@ -1278,9 +1279,9 @@ int bnx2x_iov_init_one(struct bnx2x *bp, int int_mode_param, } /* allocate the queue arrays for all VFs */ - bp->vfdb->vfqs = kzalloc( - BNX2X_MAX_NUM_VF_QUEUES * sizeof(struct bnx2x_vf_queue), - GFP_KERNEL); + bp->vfdb->vfqs = kcalloc(BNX2X_MAX_NUM_VF_QUEUES, + sizeof(struct bnx2x_vf_queue), + GFP_KERNEL); if (!bp->vfdb->vfqs) { BNX2X_ERR("failed to allocate vf queue array\n"); diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c index 8bc126a156e8..30273a7717e2 100644 --- a/drivers/net/ethernet/broadcom/cnic.c +++ b/drivers/net/ethernet/broadcom/cnic.c @@ -660,7 +660,7 @@ static int cnic_init_id_tbl(struct cnic_id_tbl *id_tbl, u32 size, u32 start_id, id_tbl->max = size; id_tbl->next = next; spin_lock_init(&id_tbl->lock); - id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); + id_tbl->table = kcalloc(DIV_ROUND_UP(size, 32), 4, GFP_KERNEL); if (!id_tbl->table) return -ENOMEM; @@ -1255,13 +1255,13 @@ static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev) cp->fcoe_init_cid = 0x10; } - cp->iscsi_tbl = kzalloc(sizeof(struct cnic_iscsi) * MAX_ISCSI_TBL_SZ, + cp->iscsi_tbl = kcalloc(MAX_ISCSI_TBL_SZ, sizeof(struct cnic_iscsi), GFP_KERNEL); if (!cp->iscsi_tbl) goto error; - cp->ctx_tbl = kzalloc(sizeof(struct cnic_context) * - cp->max_cid_space, GFP_KERNEL); + cp->ctx_tbl = kcalloc(cp->max_cid_space, sizeof(struct cnic_context), + GFP_KERNEL); if (!cp->ctx_tbl) goto error; @@ -4100,7 +4100,7 @@ static int cnic_cm_alloc_mem(struct cnic_dev *dev) struct cnic_local *cp = dev->cnic_priv; u32 port_id; - cp->csk_tbl = kzalloc(sizeof(struct cnic_sock) * MAX_CM_SK_TBL_SZ, + cp->csk_tbl = kcalloc(MAX_CM_SK_TBL_SZ, sizeof(struct cnic_sock), GFP_KERNEL); if (!cp->csk_tbl) return -ENOMEM; diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 9f59b1270a7c..3be87efdc93d 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -8631,8 +8631,9 @@ static int tg3_mem_tx_acquire(struct tg3 *tp) tnapi++; for (i = 0; i < tp->txq_cnt; i++, tnapi++) { - tnapi->tx_buffers = kzalloc(sizeof(struct tg3_tx_ring_info) * - TG3_TX_RING_SIZE, GFP_KERNEL); + tnapi->tx_buffers = kcalloc(TG3_TX_RING_SIZE, + sizeof(struct tg3_tx_ring_info), + GFP_KERNEL); if (!tnapi->tx_buffers) goto err_out; diff --git a/drivers/net/ethernet/brocade/bna/bnad.c b/drivers/net/ethernet/brocade/bna/bnad.c index 69cc3e0119d6..ea5f32ea308a 100644 --- a/drivers/net/ethernet/brocade/bna/bnad.c +++ b/drivers/net/ethernet/brocade/bna/bnad.c @@ -3141,7 +3141,7 @@ bnad_set_rx_ucast_fltr(struct bnad *bnad) if (uc_count > bna_attr(&bnad->bna)->num_ucmac) goto mode_default; - mac_list = kzalloc(uc_count * ETH_ALEN, GFP_ATOMIC); + mac_list = kcalloc(ETH_ALEN, uc_count, GFP_ATOMIC); if (mac_list == NULL) goto mode_default; @@ -3182,7 +3182,7 @@ bnad_set_rx_mcast_fltr(struct bnad *bnad) if (mc_count > bna_attr(&bnad->bna)->num_mcmac) goto mode_allmulti; - mac_list = kzalloc((mc_count + 1) * ETH_ALEN, GFP_ATOMIC); + mac_list = kcalloc(mc_count + 1, ETH_ALEN, GFP_ATOMIC); if (mac_list == NULL) goto mode_allmulti; diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c index 2bd7c638b178..2c63afff1382 100644 --- a/drivers/net/ethernet/calxeda/xgmac.c +++ b/drivers/net/ethernet/calxeda/xgmac.c @@ -739,7 +739,7 @@ static int xgmac_dma_desc_rings_init(struct net_device *dev) netdev_dbg(priv->dev, "mtu [%d] bfsize [%d]\n", dev->mtu, bfsize); - priv->rx_skbuff = kzalloc(sizeof(struct sk_buff *) * DMA_RX_RING_SZ, + priv->rx_skbuff = kcalloc(DMA_RX_RING_SZ, sizeof(struct sk_buff *), GFP_KERNEL); if (!priv->rx_skbuff) return -ENOMEM; @@ -752,7 +752,7 @@ static int xgmac_dma_desc_rings_init(struct net_device *dev) if (!priv->dma_rx) goto err_dma_rx; - priv->tx_skbuff = kzalloc(sizeof(struct sk_buff *) * DMA_TX_RING_SZ, + priv->tx_skbuff = kcalloc(DMA_TX_RING_SZ, sizeof(struct sk_buff *), GFP_KERNEL); if (!priv->tx_skbuff) goto err_tx_skb; diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c index d42704d07484..187a249ff2d1 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c @@ -292,8 +292,8 @@ static int nicvf_init_rbdr(struct nicvf *nic, struct rbdr *rbdr, rbdr->is_xdp = true; } rbdr->pgcnt = roundup_pow_of_two(rbdr->pgcnt); - rbdr->pgcache = kzalloc(sizeof(*rbdr->pgcache) * - rbdr->pgcnt, GFP_KERNEL); + rbdr->pgcache = kcalloc(rbdr->pgcnt, sizeof(*rbdr->pgcache), + GFP_KERNEL); if (!rbdr->pgcache) return -ENOMEM; rbdr->pgidx = 0; diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c index a95cde0fadf7..4bc211093c98 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.c @@ -561,13 +561,13 @@ int t4_uld_mem_alloc(struct adapter *adap) if (!adap->uld) return -ENOMEM; - s->uld_rxq_info = kzalloc(CXGB4_ULD_MAX * + s->uld_rxq_info = kcalloc(CXGB4_ULD_MAX, sizeof(struct sge_uld_rxq_info *), GFP_KERNEL); if (!s->uld_rxq_info) goto err_uld; - s->uld_txq_info = kzalloc(CXGB4_TX_MAX * + s->uld_txq_info = kcalloc(CXGB4_TX_MAX, sizeof(struct sge_uld_txq_info *), GFP_KERNEL); if (!s->uld_txq_info) diff --git a/drivers/net/ethernet/cortina/gemini.c b/drivers/net/ethernet/cortina/gemini.c index ff9eb45f67f8..6d7404f66f84 100644 --- a/drivers/net/ethernet/cortina/gemini.c +++ b/drivers/net/ethernet/cortina/gemini.c @@ -910,8 +910,8 @@ static int geth_setup_freeq(struct gemini_ethernet *geth) } /* Allocate a mapping to page look-up index */ - geth->freeq_pages = kzalloc(pages * sizeof(*geth->freeq_pages), - GFP_KERNEL); + geth->freeq_pages = kcalloc(pages, sizeof(*geth->freeq_pages), + GFP_KERNEL); if (!geth->freeq_pages) goto err_freeq; geth->num_freeq_pages = pages; diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c index 1ccb6443d2ed..ef9ef703d13a 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c @@ -2197,7 +2197,8 @@ static int hns_nic_init_ring_data(struct hns_nic_priv *priv) return -EINVAL; } - priv->ring_data = kzalloc(h->q_num * sizeof(*priv->ring_data) * 2, + priv->ring_data = kzalloc(array3_size(h->q_num, + sizeof(*priv->ring_data), 2), GFP_KERNEL); if (!priv->ring_data) return -ENOMEM; diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index acf1e8b52b8e..3ba0c90e7055 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -3312,7 +3312,7 @@ static int e1000e_write_mc_addr_list(struct net_device *netdev) return 0; } - mta_list = kzalloc(netdev_mc_count(netdev) * ETH_ALEN, GFP_ATOMIC); + mta_list = kcalloc(netdev_mc_count(netdev), ETH_ALEN, GFP_ATOMIC); if (!mta_list) return -ENOMEM; diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index c33821d2afb3..f707709969ac 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -3763,8 +3763,9 @@ static int igb_sw_init(struct igb_adapter *adapter) /* Assume MSI-X interrupts, will be checked during IRQ allocation */ adapter->flags |= IGB_FLAG_HAS_MSIX; - adapter->mac_table = kzalloc(sizeof(struct igb_mac_addr) * - hw->mac.rar_entry_count, GFP_ATOMIC); + adapter->mac_table = kcalloc(hw->mac.rar_entry_count, + sizeof(struct igb_mac_addr), + GFP_ATOMIC); if (!adapter->mac_table) return -ENOMEM; @@ -4752,7 +4753,7 @@ static int igb_write_mc_addr_list(struct net_device *netdev) return 0; } - mta_list = kzalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); + mta_list = kcalloc(netdev_mc_count(netdev), 6, GFP_ATOMIC); if (!mta_list) return -ENOMEM; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 4929f7265598..0b1ba3ae159c 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -6034,8 +6034,8 @@ static int ixgbe_sw_init(struct ixgbe_adapter *adapter, for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) adapter->jump_tables[i] = NULL; - adapter->mac_table = kzalloc(sizeof(struct ixgbe_mac_addr) * - hw->mac.num_rar_entries, + adapter->mac_table = kcalloc(hw->mac.num_rar_entries, + sizeof(struct ixgbe_mac_addr), GFP_ATOMIC); if (!adapter->mac_table) return -ENOMEM; diff --git a/drivers/net/ethernet/jme.c b/drivers/net/ethernet/jme.c index 8a165842fa85..06ff185eb188 100644 --- a/drivers/net/ethernet/jme.c +++ b/drivers/net/ethernet/jme.c @@ -589,8 +589,9 @@ jme_setup_tx_resources(struct jme_adapter *jme) atomic_set(&txring->next_to_clean, 0); atomic_set(&txring->nr_free, jme->tx_ring_size); - txring->bufinf = kzalloc(sizeof(struct jme_buffer_info) * - jme->tx_ring_size, GFP_ATOMIC); + txring->bufinf = kcalloc(jme->tx_ring_size, + sizeof(struct jme_buffer_info), + GFP_ATOMIC); if (unlikely(!(txring->bufinf))) goto err_free_txring; @@ -838,8 +839,9 @@ jme_setup_rx_resources(struct jme_adapter *jme) rxring->next_to_use = 0; atomic_set(&rxring->next_to_clean, 0); - rxring->bufinf = kzalloc(sizeof(struct jme_buffer_info) * - jme->rx_ring_size, GFP_ATOMIC); + rxring->bufinf = kcalloc(jme->rx_ring_size, + sizeof(struct jme_buffer_info), + GFP_ATOMIC); if (unlikely(!(rxring->bufinf))) goto err_free_rxring; diff --git a/drivers/net/ethernet/mellanox/mlx4/alloc.c b/drivers/net/ethernet/mellanox/mlx4/alloc.c index 6dabd983e7e0..4bdf25059542 100644 --- a/drivers/net/ethernet/mellanox/mlx4/alloc.c +++ b/drivers/net/ethernet/mellanox/mlx4/alloc.c @@ -185,8 +185,8 @@ int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, bitmap->avail = num - reserved_top - reserved_bot; bitmap->effective_len = bitmap->avail; spin_lock_init(&bitmap->lock); - bitmap->table = kzalloc(BITS_TO_LONGS(bitmap->max) * - sizeof(long), GFP_KERNEL); + bitmap->table = kcalloc(BITS_TO_LONGS(bitmap->max), sizeof(long), + GFP_KERNEL); if (!bitmap->table) return -ENOMEM; diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c index 03375c705df7..e65bc3c95630 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c @@ -2377,20 +2377,23 @@ int mlx4_multi_func_init(struct mlx4_dev *dev) struct mlx4_vf_admin_state *vf_admin; priv->mfunc.master.slave_state = - kzalloc(dev->num_slaves * - sizeof(struct mlx4_slave_state), GFP_KERNEL); + kcalloc(dev->num_slaves, + sizeof(struct mlx4_slave_state), + GFP_KERNEL); if (!priv->mfunc.master.slave_state) goto err_comm; priv->mfunc.master.vf_admin = - kzalloc(dev->num_slaves * - sizeof(struct mlx4_vf_admin_state), GFP_KERNEL); + kcalloc(dev->num_slaves, + sizeof(struct mlx4_vf_admin_state), + GFP_KERNEL); if (!priv->mfunc.master.vf_admin) goto err_comm_admin; priv->mfunc.master.vf_oper = - kzalloc(dev->num_slaves * - sizeof(struct mlx4_vf_oper_state), GFP_KERNEL); + kcalloc(dev->num_slaves, + sizeof(struct mlx4_vf_oper_state), + GFP_KERNEL); if (!priv->mfunc.master.vf_oper) goto err_comm_oper; diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 9670b33fc9b1..65eb06e017e4 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -2229,13 +2229,15 @@ static int mlx4_en_copy_priv(struct mlx4_en_priv *dst, if (!dst->tx_ring_num[t]) continue; - dst->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) * - MAX_TX_RINGS, GFP_KERNEL); + dst->tx_ring[t] = kcalloc(MAX_TX_RINGS, + sizeof(struct mlx4_en_tx_ring *), + GFP_KERNEL); if (!dst->tx_ring[t]) goto err_free_tx; - dst->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) * - MAX_TX_RINGS, GFP_KERNEL); + dst->tx_cq[t] = kcalloc(MAX_TX_RINGS, + sizeof(struct mlx4_en_cq *), + GFP_KERNEL); if (!dst->tx_cq[t]) { kfree(dst->tx_ring[t]); goto err_free_tx; @@ -3320,14 +3322,16 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, if (!priv->tx_ring_num[t]) continue; - priv->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) * - MAX_TX_RINGS, GFP_KERNEL); + priv->tx_ring[t] = kcalloc(MAX_TX_RINGS, + sizeof(struct mlx4_en_tx_ring *), + GFP_KERNEL); if (!priv->tx_ring[t]) { err = -ENOMEM; goto out; } - priv->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) * - MAX_TX_RINGS, GFP_KERNEL); + priv->tx_cq[t] = kcalloc(MAX_TX_RINGS, + sizeof(struct mlx4_en_cq *), + GFP_KERNEL); if (!priv->tx_cq[t]) { err = -ENOMEM; goto out; diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index 0a30d81aab3b..872014702fc1 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -2982,7 +2982,8 @@ static int mlx4_init_steering(struct mlx4_dev *dev) int num_entries = dev->caps.num_ports; int i, j; - priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL); + priv->steer = kcalloc(num_entries, sizeof(struct mlx4_steer), + GFP_KERNEL); if (!priv->steer) return -ENOMEM; @@ -3103,7 +3104,7 @@ static u64 mlx4_enable_sriov(struct mlx4_dev *dev, struct pci_dev *pdev, } } - dev->dev_vfs = kzalloc(total_vfs * sizeof(*dev->dev_vfs), GFP_KERNEL); + dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs), GFP_KERNEL); if (NULL == dev->dev_vfs) { mlx4_err(dev, "Failed to allocate memory for VFs\n"); goto disable_sriov; diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index b0e11255a355..7b1b5ac986d0 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -487,7 +487,7 @@ int mlx4_init_resource_tracker(struct mlx4_dev *dev) int max_vfs_guarantee_counter = get_max_gauranteed_vfs_counter(dev); priv->mfunc.master.res_tracker.slave_list = - kzalloc(dev->num_slaves * sizeof(struct slave_list), + kcalloc(dev->num_slaves, sizeof(struct slave_list), GFP_KERNEL); if (!priv->mfunc.master.res_tracker.slave_list) return -ENOMEM; @@ -514,14 +514,14 @@ int mlx4_init_resource_tracker(struct mlx4_dev *dev) sizeof(int), GFP_KERNEL); if (i == RES_MAC || i == RES_VLAN) - res_alloc->allocated = kzalloc(MLX4_MAX_PORTS * - (dev->persist->num_vfs - + 1) * - sizeof(int), GFP_KERNEL); + res_alloc->allocated = + kcalloc(MLX4_MAX_PORTS * + (dev->persist->num_vfs + 1), + sizeof(int), GFP_KERNEL); else - res_alloc->allocated = kzalloc((dev->persist-> - num_vfs + 1) * - sizeof(int), GFP_KERNEL); + res_alloc->allocated = + kcalloc(dev->persist->num_vfs + 1, + sizeof(int), GFP_KERNEL); /* Reduce the sink counter */ if (i == RES_COUNTER) res_alloc->res_free = dev->caps.max_counters - 1; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c index a0433b48e833..5645a4facad2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c @@ -381,7 +381,7 @@ int mlx5_fpga_ipsec_counters_read(struct mlx5_core_dev *mdev, u64 *counters, count = mlx5_fpga_ipsec_counters_count(mdev); - data = kzalloc(sizeof(*data) * count * 2, GFP_KERNEL); + data = kzalloc(array3_size(sizeof(*data), count, 2), GFP_KERNEL); if (!data) { ret = -ENOMEM; goto out; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c index 857035583ccd..1e062e6b2587 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/clock.c @@ -394,8 +394,9 @@ static int mlx5_init_pin_config(struct mlx5_clock *clock) int i; clock->ptp_info.pin_config = - kzalloc(sizeof(*clock->ptp_info.pin_config) * - clock->ptp_info.n_pins, GFP_KERNEL); + kcalloc(clock->ptp_info.n_pins, + sizeof(*clock->ptp_info.pin_config), + GFP_KERNEL); if (!clock->ptp_info.pin_config) return -ENOMEM; clock->ptp_info.enable = mlx5_ptp_enable; diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c index 91262b0573e3..cad603c35271 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c @@ -740,7 +740,8 @@ int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port) mlxsw_sp_port->root_qdisc->prio_bitmap = 0xff; mlxsw_sp_port->root_qdisc->tclass_num = MLXSW_SP_PORT_DEFAULT_TCLASS; - mlxsw_sp_qdisc = kzalloc(sizeof(*mlxsw_sp_qdisc) * IEEE_8021QAZ_MAX_TCS, + mlxsw_sp_qdisc = kcalloc(IEEE_8021QAZ_MAX_TCS, + sizeof(*mlxsw_sp_qdisc), GFP_KERNEL); if (!mlxsw_sp_qdisc) goto err_tclass_qdiscs_init; diff --git a/drivers/net/ethernet/micrel/ksz884x.c b/drivers/net/ethernet/micrel/ksz884x.c index 52207508744c..b72d1bd11296 100644 --- a/drivers/net/ethernet/micrel/ksz884x.c +++ b/drivers/net/ethernet/micrel/ksz884x.c @@ -4372,7 +4372,7 @@ static void ksz_update_timer(struct ksz_timer_info *info) */ static int ksz_alloc_soft_desc(struct ksz_desc_info *desc_info, int transmit) { - desc_info->ring = kzalloc(sizeof(struct ksz_desc) * desc_info->alloc, + desc_info->ring = kcalloc(desc_info->alloc, sizeof(struct ksz_desc), GFP_KERNEL); if (!desc_info->ring) return 1; diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.c b/drivers/net/ethernet/neterion/vxge/vxge-config.c index c60da9e8bf14..8d0295655933 100644 --- a/drivers/net/ethernet/neterion/vxge/vxge-config.c +++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c @@ -2220,22 +2220,22 @@ __vxge_hw_channel_allocate(struct __vxge_hw_vpath_handle *vph, channel->length = length; channel->vp_id = vp_id; - channel->work_arr = kzalloc(sizeof(void *)*length, GFP_KERNEL); + channel->work_arr = kcalloc(length, sizeof(void *), GFP_KERNEL); if (channel->work_arr == NULL) goto exit1; - channel->free_arr = kzalloc(sizeof(void *)*length, GFP_KERNEL); + channel->free_arr = kcalloc(length, sizeof(void *), GFP_KERNEL); if (channel->free_arr == NULL) goto exit1; channel->free_ptr = length; - channel->reserve_arr = kzalloc(sizeof(void *)*length, GFP_KERNEL); + channel->reserve_arr = kcalloc(length, sizeof(void *), GFP_KERNEL); if (channel->reserve_arr == NULL) goto exit1; channel->reserve_ptr = length; channel->reserve_top = 0; - channel->orig_arr = kzalloc(sizeof(void *)*length, GFP_KERNEL); + channel->orig_arr = kcalloc(length, sizeof(void *), GFP_KERNEL); if (channel->orig_arr == NULL) goto exit1; diff --git a/drivers/net/ethernet/neterion/vxge/vxge-main.c b/drivers/net/ethernet/neterion/vxge/vxge-main.c index a8918bb7c802..5ae3fa82909f 100644 --- a/drivers/net/ethernet/neterion/vxge/vxge-main.c +++ b/drivers/net/ethernet/neterion/vxge/vxge-main.c @@ -3429,8 +3429,8 @@ static int vxge_device_register(struct __vxge_hw_device *hldev, vxge_initialize_ethtool_ops(ndev); /* Allocate memory for vpath */ - vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) * - no_of_vpath, GFP_KERNEL); + vdev->vpaths = kcalloc(no_of_vpath, sizeof(struct vxge_vpath), + GFP_KERNEL); if (!vdev->vpaths) { vxge_debug_init(VXGE_ERR, "%s: vpath memory allocation failed", diff --git a/drivers/net/ethernet/pasemi/pasemi_mac.c b/drivers/net/ethernet/pasemi/pasemi_mac.c index 07a2eb3781b1..8a31a02c9f47 100644 --- a/drivers/net/ethernet/pasemi/pasemi_mac.c +++ b/drivers/net/ethernet/pasemi/pasemi_mac.c @@ -390,8 +390,9 @@ static int pasemi_mac_setup_rx_resources(const struct net_device *dev) spin_lock_init(&ring->lock); ring->size = RX_RING_SIZE; - ring->ring_info = kzalloc(sizeof(struct pasemi_mac_buffer) * - RX_RING_SIZE, GFP_KERNEL); + ring->ring_info = kcalloc(RX_RING_SIZE, + sizeof(struct pasemi_mac_buffer), + GFP_KERNEL); if (!ring->ring_info) goto out_ring_info; @@ -473,8 +474,9 @@ pasemi_mac_setup_tx_resources(const struct net_device *dev) spin_lock_init(&ring->lock); ring->size = TX_RING_SIZE; - ring->ring_info = kzalloc(sizeof(struct pasemi_mac_buffer) * - TX_RING_SIZE, GFP_KERNEL); + ring->ring_info = kcalloc(TX_RING_SIZE, + sizeof(struct pasemi_mac_buffer), + GFP_KERNEL); if (!ring->ring_info) goto out_ring_info; diff --git a/drivers/net/ethernet/qlogic/qed/qed_debug.c b/drivers/net/ethernet/qlogic/qed/qed_debug.c index b9ec460dd996..a14e48489029 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_debug.c +++ b/drivers/net/ethernet/qlogic/qed/qed_debug.c @@ -6617,7 +6617,8 @@ static enum dbg_status qed_mcp_trace_alloc_meta(struct qed_hwfn *p_hwfn, /* Read no. of modules and allocate memory for their pointers */ meta->modules_num = qed_read_byte_from_buf(meta_buf_bytes, &offset); - meta->modules = kzalloc(meta->modules_num * sizeof(char *), GFP_KERNEL); + meta->modules = kcalloc(meta->modules_num, sizeof(char *), + GFP_KERNEL); if (!meta->modules) return DBG_STATUS_VIRT_MEM_ALLOC_FAILED; @@ -6645,7 +6646,7 @@ static enum dbg_status qed_mcp_trace_alloc_meta(struct qed_hwfn *p_hwfn, /* Read number of formats and allocate memory for all formats */ meta->formats_num = qed_read_dword_from_buf(meta_buf_bytes, &offset); - meta->formats = kzalloc(meta->formats_num * + meta->formats = kcalloc(meta->formats_num, sizeof(struct mcp_trace_format), GFP_KERNEL); if (!meta->formats) diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c index b285edc8d6a1..329781cda77f 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dev.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c @@ -814,26 +814,26 @@ static int qed_alloc_qm_data(struct qed_hwfn *p_hwfn) if (rc) goto alloc_err; - qm_info->qm_pq_params = kzalloc(sizeof(*qm_info->qm_pq_params) * - qed_init_qm_get_num_pqs(p_hwfn), + qm_info->qm_pq_params = kcalloc(qed_init_qm_get_num_pqs(p_hwfn), + sizeof(*qm_info->qm_pq_params), GFP_KERNEL); if (!qm_info->qm_pq_params) goto alloc_err; - qm_info->qm_vport_params = kzalloc(sizeof(*qm_info->qm_vport_params) * - qed_init_qm_get_num_vports(p_hwfn), + qm_info->qm_vport_params = kcalloc(qed_init_qm_get_num_vports(p_hwfn), + sizeof(*qm_info->qm_vport_params), GFP_KERNEL); if (!qm_info->qm_vport_params) goto alloc_err; - qm_info->qm_port_params = kzalloc(sizeof(*qm_info->qm_port_params) * - p_hwfn->cdev->num_ports_in_engine, + qm_info->qm_port_params = kcalloc(p_hwfn->cdev->num_ports_in_engine, + sizeof(*qm_info->qm_port_params), GFP_KERNEL); if (!qm_info->qm_port_params) goto alloc_err; - qm_info->wfq_data = kzalloc(sizeof(*qm_info->wfq_data) * - qed_init_qm_get_num_vports(p_hwfn), + qm_info->wfq_data = kcalloc(qed_init_qm_get_num_vports(p_hwfn), + sizeof(*qm_info->wfq_data), GFP_KERNEL); if (!qm_info->wfq_data) goto alloc_err; diff --git a/drivers/net/ethernet/qlogic/qed/qed_init_ops.c b/drivers/net/ethernet/qlogic/qed/qed_init_ops.c index 3bb76da6baa2..d9ab5add27a8 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_init_ops.c +++ b/drivers/net/ethernet/qlogic/qed/qed_init_ops.c @@ -149,12 +149,12 @@ int qed_init_alloc(struct qed_hwfn *p_hwfn) if (IS_VF(p_hwfn->cdev)) return 0; - rt_data->b_valid = kzalloc(sizeof(bool) * RUNTIME_ARRAY_SIZE, + rt_data->b_valid = kcalloc(RUNTIME_ARRAY_SIZE, sizeof(bool), GFP_KERNEL); if (!rt_data->b_valid) return -ENOMEM; - rt_data->init_val = kzalloc(sizeof(u32) * RUNTIME_ARRAY_SIZE, + rt_data->init_val = kcalloc(RUNTIME_ARRAY_SIZE, sizeof(u32), GFP_KERNEL); if (!rt_data->init_val) { kfree(rt_data->b_valid); diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c index 1f6ac848109d..de1c70843efd 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_l2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c @@ -98,7 +98,7 @@ int qed_l2_alloc(struct qed_hwfn *p_hwfn) p_l2_info->queues = max_t(u8, rx, tx); } - pp_qids = kzalloc(sizeof(unsigned long *) * p_l2_info->queues, + pp_qids = kcalloc(p_l2_info->queues, sizeof(unsigned long *), GFP_KERNEL); if (!pp_qids) return -ENOMEM; diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index 1b5f7d57b6f8..8c6724063231 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -1025,15 +1025,17 @@ int qlcnic_init_pci_info(struct qlcnic_adapter *adapter) act_pci_func = ahw->total_nic_func; - adapter->npars = kzalloc(sizeof(struct qlcnic_npar_info) * - act_pci_func, GFP_KERNEL); + adapter->npars = kcalloc(act_pci_func, + sizeof(struct qlcnic_npar_info), + GFP_KERNEL); if (!adapter->npars) { ret = -ENOMEM; goto err_pci_info; } - adapter->eswitch = kzalloc(sizeof(struct qlcnic_eswitch) * - QLCNIC_NIU_MAX_XG_PORTS, GFP_KERNEL); + adapter->eswitch = kcalloc(QLCNIC_NIU_MAX_XG_PORTS, + sizeof(struct qlcnic_eswitch), + GFP_KERNEL); if (!adapter->eswitch) { ret = -ENOMEM; goto err_npars; diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c index c58180f40844..0c744b9c6e0a 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c @@ -157,8 +157,8 @@ int qlcnic_sriov_init(struct qlcnic_adapter *adapter, int num_vfs) adapter->ahw->sriov = sriov; sriov->num_vfs = num_vfs; bc = &sriov->bc; - sriov->vf_info = kzalloc(sizeof(struct qlcnic_vf_info) * - num_vfs, GFP_KERNEL); + sriov->vf_info = kcalloc(num_vfs, sizeof(struct qlcnic_vf_info), + GFP_KERNEL); if (!sriov->vf_info) { err = -ENOMEM; goto qlcnic_free_sriov; @@ -450,7 +450,7 @@ static int qlcnic_sriov_set_guest_vlan_mode(struct qlcnic_adapter *adapter, return 0; num_vlans = sriov->num_allowed_vlans; - sriov->allowed_vlans = kzalloc(sizeof(u16) * num_vlans, GFP_KERNEL); + sriov->allowed_vlans = kcalloc(num_vlans, sizeof(u16), GFP_KERNEL); if (!sriov->allowed_vlans) return -ENOMEM; @@ -706,7 +706,7 @@ static inline int qlcnic_sriov_alloc_bc_trans(struct qlcnic_bc_trans **trans) static inline int qlcnic_sriov_alloc_bc_msg(struct qlcnic_bc_hdr **hdr, u32 size) { - *hdr = kzalloc(sizeof(struct qlcnic_bc_hdr) * size, GFP_ATOMIC); + *hdr = kcalloc(size, sizeof(struct qlcnic_bc_hdr), GFP_ATOMIC); if (!*hdr) return -ENOMEM; diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c index ce8071fc90c4..e080d3e7c582 100644 --- a/drivers/net/ethernet/socionext/netsec.c +++ b/drivers/net/ethernet/socionext/netsec.c @@ -973,7 +973,7 @@ static int netsec_alloc_dring(struct netsec_priv *priv, enum ring_id id) goto err; } - dring->desc = kzalloc(DESC_NUM * sizeof(*dring->desc), GFP_KERNEL); + dring->desc = kcalloc(DESC_NUM, sizeof(*dring->desc), GFP_KERNEL); if (!dring->desc) { ret = -ENOMEM; goto err; diff --git a/drivers/net/ethernet/toshiba/ps3_gelic_wireless.c b/drivers/net/ethernet/toshiba/ps3_gelic_wireless.c index eed18f88bdff..302079e22b06 100644 --- a/drivers/net/ethernet/toshiba/ps3_gelic_wireless.c +++ b/drivers/net/ethernet/toshiba/ps3_gelic_wireless.c @@ -2320,8 +2320,9 @@ static struct net_device *gelic_wl_alloc(struct gelic_card *card) pr_debug("%s: wl=%p port=%p\n", __func__, wl, port); /* allocate scan list */ - wl->networks = kzalloc(sizeof(struct gelic_wl_scan_info) * - GELIC_WL_BSS_MAX_ENT, GFP_KERNEL); + wl->networks = kcalloc(GELIC_WL_BSS_MAX_ENT, + sizeof(struct gelic_wl_scan_info), + GFP_KERNEL); if (!wl->networks) goto fail_bss; diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c index a6c87793d899..79e9b103188b 100644 --- a/drivers/net/phy/dp83640.c +++ b/drivers/net/phy/dp83640.c @@ -1097,8 +1097,9 @@ static struct dp83640_clock *dp83640_clock_get_bus(struct mii_bus *bus) if (!clock) goto out; - clock->caps.pin_config = kzalloc(sizeof(struct ptp_pin_desc) * - DP83640_N_PINS, GFP_KERNEL); + clock->caps.pin_config = kcalloc(DP83640_N_PINS, + sizeof(struct ptp_pin_desc), + GFP_KERNEL); if (!clock->caps.pin_config) { kfree(clock); clock = NULL; diff --git a/drivers/net/slip/slip.c b/drivers/net/slip/slip.c index 8940417c30e5..b008266e91ea 100644 --- a/drivers/net/slip/slip.c +++ b/drivers/net/slip/slip.c @@ -1307,7 +1307,7 @@ static int __init slip_init(void) printk(KERN_INFO "SLIP linefill/keepalive option.\n"); #endif - slip_devs = kzalloc(sizeof(struct net_device *)*slip_maxdev, + slip_devs = kcalloc(slip_maxdev, sizeof(struct net_device *), GFP_KERNEL); if (!slip_devs) return -ENOMEM; diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index ca0af0e15a2c..b070959737ff 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -280,7 +280,7 @@ static int __team_options_register(struct team *team, struct team_option **dst_opts; int err; - dst_opts = kzalloc(sizeof(struct team_option *) * option_count, + dst_opts = kcalloc(option_count, sizeof(struct team_option *), GFP_KERNEL); if (!dst_opts) return -ENOMEM; diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 309b88acd3d0..06b4d290784d 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1661,7 +1661,7 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message) } if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) { - u32 *filter_mask = kzalloc(sizeof(u32) * 32, GFP_KERNEL); + u32 *filter_mask = kcalloc(32, sizeof(u32), GFP_KERNEL); u32 command[2]; u32 offset[2]; u32 crc[4]; diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 15b9a83bbd9d..b6c9a2af3732 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2552,7 +2552,7 @@ static int virtnet_find_vqs(struct virtnet_info *vi) virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ); /* Allocate space for find_vqs parameters */ - vqs = kzalloc(total_vqs * sizeof(*vqs), GFP_KERNEL); + vqs = kcalloc(total_vqs, sizeof(*vqs), GFP_KERNEL); if (!vqs) goto err_vq; callbacks = kmalloc_array(total_vqs, sizeof(*callbacks), GFP_KERNEL); @@ -2562,7 +2562,7 @@ static int virtnet_find_vqs(struct virtnet_info *vi) if (!names) goto err_names; if (!vi->big_packets || vi->mergeable_rx_bufs) { - ctx = kzalloc(total_vqs * sizeof(*ctx), GFP_KERNEL); + ctx = kcalloc(total_vqs, sizeof(*ctx), GFP_KERNEL); if (!ctx) goto err_ctx; } else { @@ -2626,10 +2626,10 @@ static int virtnet_alloc_queues(struct virtnet_info *vi) vi->ctrl = kzalloc(sizeof(*vi->ctrl), GFP_KERNEL); if (!vi->ctrl) goto err_ctrl; - vi->sq = kzalloc(sizeof(*vi->sq) * vi->max_queue_pairs, GFP_KERNEL); + vi->sq = kcalloc(vi->max_queue_pairs, sizeof(*vi->sq), GFP_KERNEL); if (!vi->sq) goto err_sq; - vi->rq = kzalloc(sizeof(*vi->rq) * vi->max_queue_pairs, GFP_KERNEL); + vi->rq = kcalloc(vi->max_queue_pairs, sizeof(*vi->rq), GFP_KERNEL); if (!vi->rq) goto err_rq; diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c index 4205dfd19da3..9b09c9d0d0fb 100644 --- a/drivers/net/wan/fsl_ucc_hdlc.c +++ b/drivers/net/wan/fsl_ucc_hdlc.c @@ -198,12 +198,14 @@ static int uhdlc_init(struct ucc_hdlc_private *priv) goto free_tx_bd; } - priv->rx_skbuff = kzalloc(priv->rx_ring_size * sizeof(*priv->rx_skbuff), + priv->rx_skbuff = kcalloc(priv->rx_ring_size, + sizeof(*priv->rx_skbuff), GFP_KERNEL); if (!priv->rx_skbuff) goto free_ucc_pram; - priv->tx_skbuff = kzalloc(priv->tx_ring_size * sizeof(*priv->tx_skbuff), + priv->tx_skbuff = kcalloc(priv->tx_ring_size, + sizeof(*priv->tx_skbuff), GFP_KERNEL); if (!priv->tx_skbuff) goto free_rx_skbuff; diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index bd23f6940488..c72d8af122a2 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -582,7 +582,7 @@ int ath10k_htt_rx_alloc(struct ath10k_htt *htt) } htt->rx_ring.netbufs_ring = - kzalloc(htt->rx_ring.size * sizeof(struct sk_buff *), + kcalloc(htt->rx_ring.size, sizeof(struct sk_buff *), GFP_KERNEL); if (!htt->rx_ring.netbufs_ring) goto err_netbuf; diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index 2e34a1fc5ba6..8c49a26fc571 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -155,7 +155,7 @@ ath10k_wmi_tlv_parse_alloc(struct ath10k *ar, const void *ptr, const void **tb; int ret; - tb = kzalloc(sizeof(*tb) * WMI_TLV_TAG_MAX, gfp); + tb = kcalloc(WMI_TLV_TAG_MAX, sizeof(*tb), gfp); if (!tb) return ERR_PTR(-ENOMEM); diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c index 2ba8cf3f38af..0687697d5e2d 100644 --- a/drivers/net/wireless/ath/ath6kl/cfg80211.c +++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c @@ -1041,7 +1041,7 @@ static int ath6kl_cfg80211_scan(struct wiphy *wiphy, n_channels = request->n_channels; - channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL); + channels = kcalloc(n_channels, sizeof(u16), GFP_KERNEL); if (channels == NULL) { ath6kl_warn("failed to set scan channels, scan all channels"); n_channels = 0; diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c index 29e93c953d93..7f1bdea742b8 100644 --- a/drivers/net/wireless/ath/carl9170/main.c +++ b/drivers/net/wireless/ath/carl9170/main.c @@ -1958,7 +1958,7 @@ static int carl9170_parse_eeprom(struct ar9170 *ar) if (!bands) return -EINVAL; - ar->survey = kzalloc(sizeof(struct survey_info) * chans, GFP_KERNEL); + ar->survey = kcalloc(chans, sizeof(struct survey_info), GFP_KERNEL); if (!ar->survey) return -ENOMEM; ar->num_channels = chans; @@ -1988,8 +1988,9 @@ int carl9170_register(struct ar9170 *ar) if (WARN_ON(ar->mem_bitmap)) return -EINVAL; - ar->mem_bitmap = kzalloc(roundup(ar->fw.mem_blocks, BITS_PER_LONG) * - sizeof(unsigned long), GFP_KERNEL); + ar->mem_bitmap = kcalloc(roundup(ar->fw.mem_blocks, BITS_PER_LONG), + sizeof(unsigned long), + GFP_KERNEL); if (!ar->mem_bitmap) return -ENOMEM; diff --git a/drivers/net/wireless/broadcom/b43/phy_n.c b/drivers/net/wireless/broadcom/b43/phy_n.c index f2a2f41e3c96..44ab080d6518 100644 --- a/drivers/net/wireless/broadcom/b43/phy_n.c +++ b/drivers/net/wireless/broadcom/b43/phy_n.c @@ -1518,7 +1518,7 @@ static int b43_nphy_load_samples(struct b43_wldev *dev, u16 i; u32 *data; - data = kzalloc(len * sizeof(u32), GFP_KERNEL); + data = kcalloc(len, sizeof(u32), GFP_KERNEL); if (!data) { b43err(dev->wl, "allocation for samples loading failed\n"); return -ENOMEM; diff --git a/drivers/net/wireless/broadcom/b43legacy/main.c b/drivers/net/wireless/broadcom/b43legacy/main.c index f1e3dad57629..55f411925960 100644 --- a/drivers/net/wireless/broadcom/b43legacy/main.c +++ b/drivers/net/wireless/broadcom/b43legacy/main.c @@ -3300,8 +3300,8 @@ static int b43legacy_wireless_core_init(struct b43legacy_wldev *dev) if ((phy->type == B43legacy_PHYTYPE_B) || (phy->type == B43legacy_PHYTYPE_G)) { - phy->_lo_pairs = kzalloc(sizeof(struct b43legacy_lopair) - * B43legacy_LO_COUNT, + phy->_lo_pairs = kcalloc(B43legacy_LO_COUNT, + sizeof(struct b43legacy_lopair), GFP_KERNEL); if (!phy->_lo_pairs) return -ENOMEM; diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c index 49d37ad96958..c40ba8855cd5 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/msgbuf.c @@ -1486,8 +1486,9 @@ int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr) (struct brcmf_commonring **)if_msgbuf->commonrings; msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings; msgbuf->max_flowrings = if_msgbuf->max_flowrings; - msgbuf->flowring_dma_handle = kzalloc(msgbuf->max_flowrings * - sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL); + msgbuf->flowring_dma_handle = + kcalloc(msgbuf->max_flowrings, + sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL); if (!msgbuf->flowring_dma_handle) goto fail; diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c index 4b2149b48362..3e9c4f2f5dd1 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c @@ -1058,7 +1058,7 @@ static s32 brcmf_p2p_act_frm_search(struct brcmf_p2p_info *p2p, u16 channel) channel_cnt = AF_PEER_SEARCH_CNT; else channel_cnt = SOCIAL_CHAN_CNT; - default_chan_list = kzalloc(channel_cnt * sizeof(*default_chan_list), + default_chan_list = kcalloc(channel_cnt, sizeof(*default_chan_list), GFP_KERNEL); if (default_chan_list == NULL) { brcmf_err("channel list allocation failed\n"); diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c index 0a14942b8216..7d4e8f589fdc 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c @@ -507,7 +507,7 @@ brcms_c_attach_malloc(uint unit, uint *err, uint devid) wlc->hw->wlc = wlc; wlc->hw->bandstate[0] = - kzalloc(sizeof(struct brcms_hw_band) * MAXBANDS, GFP_ATOMIC); + kcalloc(MAXBANDS, sizeof(struct brcms_hw_band), GFP_ATOMIC); if (wlc->hw->bandstate[0] == NULL) { *err = 1006; goto fail; @@ -521,7 +521,8 @@ brcms_c_attach_malloc(uint unit, uint *err, uint devid) } wlc->modulecb = - kzalloc(sizeof(struct modulecb) * BRCMS_MAXMODULES, GFP_ATOMIC); + kcalloc(BRCMS_MAXMODULES, sizeof(struct modulecb), + GFP_ATOMIC); if (wlc->modulecb == NULL) { *err = 1009; goto fail; @@ -553,7 +554,7 @@ brcms_c_attach_malloc(uint unit, uint *err, uint devid) } wlc->bandstate[0] = - kzalloc(sizeof(struct brcms_band)*MAXBANDS, GFP_ATOMIC); + kcalloc(MAXBANDS, sizeof(struct brcms_band), GFP_ATOMIC); if (wlc->bandstate[0] == NULL) { *err = 1025; goto fail; diff --git a/drivers/net/wireless/intel/iwlegacy/common.c b/drivers/net/wireless/intel/iwlegacy/common.c index 063e19ced7c8..6514baf799fe 100644 --- a/drivers/net/wireless/intel/iwlegacy/common.c +++ b/drivers/net/wireless/intel/iwlegacy/common.c @@ -922,7 +922,7 @@ il_init_channel_map(struct il_priv *il) D_EEPROM("Parsing data for %d channels.\n", il->channel_count); il->channel_info = - kzalloc(sizeof(struct il_channel_info) * il->channel_count, + kcalloc(il->channel_count, sizeof(struct il_channel_info), GFP_KERNEL); if (!il->channel_info) { IL_ERR("Could not allocate channel_info\n"); @@ -3041,9 +3041,9 @@ il_tx_queue_init(struct il_priv *il, u32 txq_id) } txq->meta = - kzalloc(sizeof(struct il_cmd_meta) * actual_slots, GFP_KERNEL); + kcalloc(actual_slots, sizeof(struct il_cmd_meta), GFP_KERNEL); txq->cmd = - kzalloc(sizeof(struct il_device_cmd *) * actual_slots, GFP_KERNEL); + kcalloc(actual_slots, sizeof(struct il_device_cmd *), GFP_KERNEL); if (!txq->meta || !txq->cmd) goto out_free_arrays; @@ -3455,7 +3455,7 @@ il_init_geos(struct il_priv *il) } channels = - kzalloc(sizeof(struct ieee80211_channel) * il->channel_count, + kcalloc(il->channel_count, sizeof(struct ieee80211_channel), GFP_KERNEL); if (!channels) return -ENOMEM; @@ -4654,8 +4654,9 @@ il_alloc_txq_mem(struct il_priv *il) { if (!il->txq) il->txq = - kzalloc(sizeof(struct il_tx_queue) * - il->cfg->num_of_queues, GFP_KERNEL); + kcalloc(il->cfg->num_of_queues, + sizeof(struct il_tx_queue), + GFP_KERNEL); if (!il->txq) { IL_ERR("Not enough memory for txq\n"); return -ENOMEM; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c index 4b3753d78d03..11ecdf63b732 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c @@ -564,7 +564,7 @@ iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, else blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; - blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); + blacklist = kcalloc(blacklist_len, sizeof(*blacklist), GFP_KERNEL); if (!blacklist) return -ENOMEM; diff --git a/drivers/net/wireless/intersil/p54/eeprom.c b/drivers/net/wireless/intersil/p54/eeprom.c index d4c73d39336f..de2ef95c386c 100644 --- a/drivers/net/wireless/intersil/p54/eeprom.c +++ b/drivers/net/wireless/intersil/p54/eeprom.c @@ -161,8 +161,9 @@ static int p54_generate_band(struct ieee80211_hw *dev, if (!tmp) goto err_out; - tmp->channels = kzalloc(sizeof(struct ieee80211_channel) * - list->band_channel_num[band], GFP_KERNEL); + tmp->channels = kcalloc(list->band_channel_num[band], + sizeof(struct ieee80211_channel), + GFP_KERNEL); if (!tmp->channels) goto err_out; @@ -344,7 +345,7 @@ static int p54_generate_channel_lists(struct ieee80211_hw *dev) goto free; } priv->chan_num = max_channel_num; - priv->survey = kzalloc(sizeof(struct survey_info) * max_channel_num, + priv->survey = kcalloc(max_channel_num, sizeof(struct survey_info), GFP_KERNEL); if (!priv->survey) { ret = -ENOMEM; @@ -352,8 +353,9 @@ static int p54_generate_channel_lists(struct ieee80211_hw *dev) } list->max_entries = max_channel_num; - list->channels = kzalloc(sizeof(struct p54_channel_entry) * - max_channel_num, GFP_KERNEL); + list->channels = kcalloc(max_channel_num, + sizeof(struct p54_channel_entry), + GFP_KERNEL); if (!list->channels) { ret = -ENOMEM; goto free; diff --git a/drivers/net/wireless/intersil/prism54/oid_mgt.c b/drivers/net/wireless/intersil/prism54/oid_mgt.c index 6528ed5b9b1d..6d57e1cbcc07 100644 --- a/drivers/net/wireless/intersil/prism54/oid_mgt.c +++ b/drivers/net/wireless/intersil/prism54/oid_mgt.c @@ -244,7 +244,7 @@ mgt_init(islpci_private *priv) /* Alloc the cache */ for (i = 0; i < OID_NUM_LAST; i++) { if (isl_oid[i].flags & OID_FLAG_CACHED) { - priv->mib[i] = kzalloc(isl_oid[i].size * + priv->mib[i] = kcalloc(isl_oid[i].size, (isl_oid[i].range + 1), GFP_KERNEL); if (!priv->mib[i]) diff --git a/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c b/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c index 1edcddaf7b4b..7ab44cd32a9d 100644 --- a/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c +++ b/drivers/net/wireless/marvell/mwifiex/11n_rxreorder.c @@ -399,8 +399,8 @@ mwifiex_11n_create_rx_reorder_tbl(struct mwifiex_private *priv, u8 *ta, new_node->win_size = win_size; - new_node->rx_reorder_ptr = kzalloc(sizeof(void *) * win_size, - GFP_KERNEL); + new_node->rx_reorder_ptr = kcalloc(win_size, sizeof(void *), + GFP_KERNEL); if (!new_node->rx_reorder_ptr) { kfree((u8 *) new_node); mwifiex_dbg(priv->adapter, ERROR, diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index 47d2dcc3f28f..dfdcbc4f141a 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -2106,15 +2106,16 @@ static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) return -ENOMEM; /* Allocate skb pointer buffers */ - card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) * - card->mp_agg_pkt_limit, GFP_KERNEL); + card->mpa_rx.skb_arr = kcalloc(card->mp_agg_pkt_limit, sizeof(void *), + GFP_KERNEL); if (!card->mpa_rx.skb_arr) { kfree(card->mp_regs); return -ENOMEM; } - card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) * - card->mp_agg_pkt_limit, GFP_KERNEL); + card->mpa_rx.len_arr = kcalloc(card->mp_agg_pkt_limit, + sizeof(*card->mpa_rx.len_arr), + GFP_KERNEL); if (!card->mpa_rx.len_arr) { kfree(card->mp_regs); kfree(card->mpa_rx.skb_arr); diff --git a/drivers/net/wireless/quantenna/qtnfmac/commands.c b/drivers/net/wireless/quantenna/qtnfmac/commands.c index 5eb143667539..c5d94a95e21a 100644 --- a/drivers/net/wireless/quantenna/qtnfmac/commands.c +++ b/drivers/net/wireless/quantenna/qtnfmac/commands.c @@ -1216,7 +1216,7 @@ static int qtnf_parse_variable_mac_info(struct qtnf_wmac *mac, return -EINVAL; } - limits = kzalloc(sizeof(*limits) * rec->n_limits, + limits = kcalloc(rec->n_limits, sizeof(*limits), GFP_KERNEL); if (!limits) return -ENOMEM; diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c index 0eee479583b8..acc399b5574e 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c @@ -397,7 +397,7 @@ static ssize_t rt2x00debug_read_crypto_stats(struct file *file, if (*offset) return 0; - data = kzalloc((1 + CIPHER_MAX) * MAX_LINE_LENGTH, GFP_KERNEL); + data = kcalloc(1 + CIPHER_MAX, MAX_LINE_LENGTH, GFP_KERNEL); if (!data) return -ENOMEM; diff --git a/drivers/net/wireless/realtek/rtlwifi/efuse.c b/drivers/net/wireless/realtek/rtlwifi/efuse.c index fd13d4ef53b8..9729e51fce38 100644 --- a/drivers/net/wireless/realtek/rtlwifi/efuse.c +++ b/drivers/net/wireless/realtek/rtlwifi/efuse.c @@ -258,8 +258,8 @@ void read_efuse(struct ieee80211_hw *hw, u16 _offset, u16 _size_byte, u8 *pbuf) } /* allocate memory for efuse_tbl and efuse_word */ - efuse_tbl = kzalloc(rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE] * - sizeof(u8), GFP_ATOMIC); + efuse_tbl = kzalloc(rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE], + GFP_ATOMIC); if (!efuse_tbl) return; efuse_word = kcalloc(EFUSE_MAX_WORD_UNIT, sizeof(u16 *), GFP_ATOMIC); diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c index ce3103bb8ebb..f9faffc498bc 100644 --- a/drivers/net/wireless/realtek/rtlwifi/usb.c +++ b/drivers/net/wireless/realtek/rtlwifi/usb.c @@ -1048,7 +1048,7 @@ int rtl_usb_probe(struct usb_interface *intf, } rtlpriv = hw->priv; rtlpriv->hw = hw; - rtlpriv->usb_data = kzalloc(RTL_USB_MAX_RX_COUNT * sizeof(u32), + rtlpriv->usb_data = kcalloc(RTL_USB_MAX_RX_COUNT, sizeof(u32), GFP_KERNEL); if (!rtlpriv->usb_data) return -ENOMEM; diff --git a/drivers/net/wireless/st/cw1200/queue.c b/drivers/net/wireless/st/cw1200/queue.c index 5153d2cfd991..7c31b63b8258 100644 --- a/drivers/net/wireless/st/cw1200/queue.c +++ b/drivers/net/wireless/st/cw1200/queue.c @@ -154,7 +154,7 @@ int cw1200_queue_stats_init(struct cw1200_queue_stats *stats, spin_lock_init(&stats->lock); init_waitqueue_head(&stats->wait_link_id_empty); - stats->link_map_cache = kzalloc(sizeof(int) * map_capacity, + stats->link_map_cache = kcalloc(map_capacity, sizeof(int), GFP_KERNEL); if (!stats->link_map_cache) return -ENOMEM; @@ -181,13 +181,13 @@ int cw1200_queue_init(struct cw1200_queue *queue, spin_lock_init(&queue->lock); timer_setup(&queue->gc, cw1200_queue_gc, 0); - queue->pool = kzalloc(sizeof(struct cw1200_queue_item) * capacity, - GFP_KERNEL); + queue->pool = kcalloc(capacity, sizeof(struct cw1200_queue_item), + GFP_KERNEL); if (!queue->pool) return -ENOMEM; - queue->link_map_cache = kzalloc(sizeof(int) * stats->map_capacity, - GFP_KERNEL); + queue->link_map_cache = kcalloc(stats->map_capacity, sizeof(int), + GFP_KERNEL); if (!queue->link_map_cache) { kfree(queue->pool); queue->pool = NULL; diff --git a/drivers/net/wireless/st/cw1200/scan.c b/drivers/net/wireless/st/cw1200/scan.c index cc2ce60f4f09..67213f11acbd 100644 --- a/drivers/net/wireless/st/cw1200/scan.c +++ b/drivers/net/wireless/st/cw1200/scan.c @@ -230,9 +230,9 @@ void cw1200_scan_work(struct work_struct *work) scan.type = WSM_SCAN_TYPE_BACKGROUND; scan.flags = WSM_SCAN_FLAG_FORCE_BACKGROUND; } - scan.ch = kzalloc( - sizeof(struct wsm_scan_ch) * (it - priv->scan.curr), - GFP_KERNEL); + scan.ch = kcalloc(it - priv->scan.curr, + sizeof(struct wsm_scan_ch), + GFP_KERNEL); if (!scan.ch) { priv->scan.status = -ENOMEM; goto fail; diff --git a/drivers/nvmem/rockchip-efuse.c b/drivers/nvmem/rockchip-efuse.c index b3b0b648be62..146de9489339 100644 --- a/drivers/nvmem/rockchip-efuse.c +++ b/drivers/nvmem/rockchip-efuse.c @@ -122,7 +122,8 @@ static int rockchip_rk3328_efuse_read(void *context, unsigned int offset, addr_offset = offset % RK3399_NBYTES; addr_len = addr_end - addr_start; - buf = kzalloc(sizeof(*buf) * addr_len * RK3399_NBYTES, GFP_KERNEL); + buf = kzalloc(array3_size(addr_len, RK3399_NBYTES, sizeof(*buf)), + GFP_KERNEL); if (!buf) { ret = -ENOMEM; goto nomem; @@ -174,7 +175,8 @@ static int rockchip_rk3399_efuse_read(void *context, unsigned int offset, addr_offset = offset % RK3399_NBYTES; addr_len = addr_end - addr_start; - buf = kzalloc(sizeof(*buf) * addr_len * RK3399_NBYTES, GFP_KERNEL); + buf = kzalloc(array3_size(addr_len, RK3399_NBYTES, sizeof(*buf)), + GFP_KERNEL); if (!buf) { clk_disable_unprepare(efuse->clk); return -ENOMEM; diff --git a/drivers/nvmem/sunxi_sid.c b/drivers/nvmem/sunxi_sid.c index 26bb637afe92..d020f89248fd 100644 --- a/drivers/nvmem/sunxi_sid.c +++ b/drivers/nvmem/sunxi_sid.c @@ -185,7 +185,7 @@ static int sunxi_sid_probe(struct platform_device *pdev) if (IS_ERR(nvmem)) return PTR_ERR(nvmem); - randomness = kzalloc(sizeof(u8) * (size), GFP_KERNEL); + randomness = kzalloc(size, GFP_KERNEL); if (!randomness) { ret = -EINVAL; goto err_unreg_nvmem; diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 0b49a62b38a3..14cc962e0eec 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -129,7 +129,7 @@ struct platform_device *of_device_alloc(struct device_node *np, /* Populate the resource table */ if (num_irq || num_reg) { - res = kzalloc(sizeof(*res) * (num_irq + num_reg), GFP_KERNEL); + res = kcalloc(num_irq + num_reg, sizeof(*res), GFP_KERNEL); if (!res) { platform_device_put(dev); return NULL; diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index ecee50d10d14..722537e14848 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -156,7 +156,7 @@ static void __init of_unittest_dynamic(void) } /* Array of 4 properties for the purpose of testing */ - prop = kzalloc(sizeof(*prop) * 4, GFP_KERNEL); + prop = kcalloc(4, sizeof(*prop), GFP_KERNEL); if (!prop) { unittest(0, "kzalloc() failed\n"); return; diff --git a/drivers/opp/ti-opp-supply.c b/drivers/opp/ti-opp-supply.c index 370eff3acd8a..9e5a9a3112c9 100644 --- a/drivers/opp/ti-opp-supply.c +++ b/drivers/opp/ti-opp-supply.c @@ -122,8 +122,8 @@ static int _store_optimized_voltages(struct device *dev, goto out; } - table = kzalloc(sizeof(*data->vdd_table) * - data->num_vdd_table, GFP_KERNEL); + table = kcalloc(data->num_vdd_table, sizeof(*data->vdd_table), + GFP_KERNEL); if (!table) { ret = -ENOMEM; goto out; diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index f45b74fcc059..4d88afdfc843 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -474,7 +474,7 @@ static int populate_msi_sysfs(struct pci_dev *pdev) return 0; /* Dynamically create the MSI attributes for the PCI device */ - msi_attrs = kzalloc(sizeof(void *) * (num_msi + 1), GFP_KERNEL); + msi_attrs = kcalloc(num_msi + 1, sizeof(void *), GFP_KERNEL); if (!msi_attrs) return -ENOMEM; for_each_pci_msi_entry(entry, pdev) { @@ -501,7 +501,7 @@ static int populate_msi_sysfs(struct pci_dev *pdev) msi_irq_group->name = "msi_irqs"; msi_irq_group->attrs = msi_attrs; - msi_irq_groups = kzalloc(sizeof(void *) * 2, GFP_KERNEL); + msi_irq_groups = kcalloc(2, sizeof(void *), GFP_KERNEL); if (!msi_irq_groups) goto error_irq_group; msi_irq_groups[0] = msi_irq_group; diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 788a200fb2dc..0c4653c1d2ce 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -1076,7 +1076,7 @@ void pci_create_legacy_files(struct pci_bus *b) { int error; - b->legacy_io = kzalloc(sizeof(struct bin_attribute) * 2, + b->legacy_io = kcalloc(2, sizeof(struct bin_attribute), GFP_ATOMIC); if (!b->legacy_io) goto kzalloc_err; diff --git a/drivers/pcmcia/pd6729.c b/drivers/pcmcia/pd6729.c index 959ae3e65ef8..f0af9985ca09 100644 --- a/drivers/pcmcia/pd6729.c +++ b/drivers/pcmcia/pd6729.c @@ -628,7 +628,7 @@ static int pd6729_pci_probe(struct pci_dev *dev, char configbyte; struct pd6729_socket *socket; - socket = kzalloc(sizeof(struct pd6729_socket) * MAX_SOCKETS, + socket = kcalloc(MAX_SOCKETS, sizeof(struct pd6729_socket), GFP_KERNEL); if (!socket) { dev_warn(&dev->dev, "failed to kzalloc socket.\n"); diff --git a/drivers/pinctrl/bcm/pinctrl-bcm2835.c b/drivers/pinctrl/bcm/pinctrl-bcm2835.c index 136ccaf53df8..fa530913a2c8 100644 --- a/drivers/pinctrl/bcm/pinctrl-bcm2835.c +++ b/drivers/pinctrl/bcm/pinctrl-bcm2835.c @@ -771,8 +771,8 @@ static int bcm2835_pctl_dt_node_to_map(struct pinctrl_dev *pctldev, maps_per_pin++; if (num_pulls) maps_per_pin++; - cur_map = maps = kzalloc(num_pins * maps_per_pin * sizeof(*maps), - GFP_KERNEL); + cur_map = maps = kcalloc(num_pins * maps_per_pin, sizeof(*maps), + GFP_KERNEL); if (!maps) return -ENOMEM; diff --git a/drivers/pinctrl/freescale/pinctrl-mxs.c b/drivers/pinctrl/freescale/pinctrl-mxs.c index 594f3e5ce9a9..3a17846aa31f 100644 --- a/drivers/pinctrl/freescale/pinctrl-mxs.c +++ b/drivers/pinctrl/freescale/pinctrl-mxs.c @@ -89,7 +89,7 @@ static int mxs_dt_node_to_map(struct pinctrl_dev *pctldev, if (!purecfg && config) new_num = 2; - new_map = kzalloc(sizeof(*new_map) * new_num, GFP_KERNEL); + new_map = kcalloc(new_num, sizeof(*new_map), GFP_KERNEL); if (!new_map) return -ENOMEM; diff --git a/drivers/pinctrl/pinctrl-lantiq.c b/drivers/pinctrl/pinctrl-lantiq.c index 41dc39c7a7b1..81632af3a86a 100644 --- a/drivers/pinctrl/pinctrl-lantiq.c +++ b/drivers/pinctrl/pinctrl-lantiq.c @@ -158,7 +158,8 @@ static int ltq_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev, for_each_child_of_node(np_config, np) max_maps += ltq_pinctrl_dt_subnode_size(np); - *map = kzalloc(max_maps * sizeof(struct pinctrl_map) * 2, GFP_KERNEL); + *map = kzalloc(array3_size(max_maps, sizeof(struct pinctrl_map), 2), + GFP_KERNEL); if (!*map) return -ENOMEM; tmp = *map; diff --git a/drivers/pinctrl/sirf/pinctrl-sirf.c b/drivers/pinctrl/sirf/pinctrl-sirf.c index ca2347d0d579..505845c66dd0 100644 --- a/drivers/pinctrl/sirf/pinctrl-sirf.c +++ b/drivers/pinctrl/sirf/pinctrl-sirf.c @@ -108,7 +108,7 @@ static int sirfsoc_dt_node_to_map(struct pinctrl_dev *pctldev, return -ENODEV; } - *map = kzalloc(sizeof(**map) * count, GFP_KERNEL); + *map = kcalloc(count, sizeof(**map), GFP_KERNEL); if (!*map) return -ENOMEM; diff --git a/drivers/pinctrl/spear/pinctrl-spear.c b/drivers/pinctrl/spear/pinctrl-spear.c index efe79d3f7659..c4f850345dc4 100644 --- a/drivers/pinctrl/spear/pinctrl-spear.c +++ b/drivers/pinctrl/spear/pinctrl-spear.c @@ -172,7 +172,7 @@ static int spear_pinctrl_dt_node_to_map(struct pinctrl_dev *pctldev, return -ENODEV; } - *map = kzalloc(sizeof(**map) * count, GFP_KERNEL); + *map = kcalloc(count, sizeof(**map), GFP_KERNEL); if (!*map) return -ENOMEM; diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c index 44459d28efd5..eaace8ec6afc 100644 --- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c +++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c @@ -277,7 +277,7 @@ static unsigned long *sunxi_pctrl_build_pin_config(struct device_node *node, if (!configlen) return NULL; - pinconfig = kzalloc(configlen * sizeof(*pinconfig), GFP_KERNEL); + pinconfig = kcalloc(configlen, sizeof(*pinconfig), GFP_KERNEL); if (!pinconfig) return ERR_PTR(-ENOMEM); diff --git a/drivers/pinctrl/vt8500/pinctrl-wmt.c b/drivers/pinctrl/vt8500/pinctrl-wmt.c index d73956bdc211..c08318a5a91b 100644 --- a/drivers/pinctrl/vt8500/pinctrl-wmt.c +++ b/drivers/pinctrl/vt8500/pinctrl-wmt.c @@ -352,7 +352,7 @@ static int wmt_pctl_dt_node_to_map(struct pinctrl_dev *pctldev, if (num_pulls) maps_per_pin++; - cur_map = maps = kzalloc(num_pins * maps_per_pin * sizeof(*maps), + cur_map = maps = kcalloc(num_pins * maps_per_pin, sizeof(*maps), GFP_KERNEL); if (!maps) return -ENOMEM; diff --git a/drivers/platform/x86/alienware-wmi.c b/drivers/platform/x86/alienware-wmi.c index 9d7dbd925065..d975462a4c57 100644 --- a/drivers/platform/x86/alienware-wmi.c +++ b/drivers/platform/x86/alienware-wmi.c @@ -458,19 +458,19 @@ static int alienware_zone_init(struct platform_device *dev) * - zone_data num_zones is for the distinct zones */ zone_dev_attrs = - kzalloc(sizeof(struct device_attribute) * (quirks->num_zones + 1), + kcalloc(quirks->num_zones + 1, sizeof(struct device_attribute), GFP_KERNEL); if (!zone_dev_attrs) return -ENOMEM; zone_attrs = - kzalloc(sizeof(struct attribute *) * (quirks->num_zones + 2), + kcalloc(quirks->num_zones + 2, sizeof(struct attribute *), GFP_KERNEL); if (!zone_attrs) return -ENOMEM; zone_data = - kzalloc(sizeof(struct platform_zone) * (quirks->num_zones), + kcalloc(quirks->num_zones, sizeof(struct platform_zone), GFP_KERNEL); if (!zone_data) return -ENOMEM; diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index a0c95853fd3f..014fc1634a3d 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -964,12 +964,12 @@ static int ips_monitor(void *data) u16 *mcp_samples, *ctv1_samples, *ctv2_samples, *mch_samples; u8 cur_seqno, last_seqno; - mcp_samples = kzalloc(sizeof(u16) * IPS_SAMPLE_COUNT, GFP_KERNEL); - ctv1_samples = kzalloc(sizeof(u16) * IPS_SAMPLE_COUNT, GFP_KERNEL); - ctv2_samples = kzalloc(sizeof(u16) * IPS_SAMPLE_COUNT, GFP_KERNEL); - mch_samples = kzalloc(sizeof(u16) * IPS_SAMPLE_COUNT, GFP_KERNEL); - cpu_samples = kzalloc(sizeof(u32) * IPS_SAMPLE_COUNT, GFP_KERNEL); - mchp_samples = kzalloc(sizeof(u32) * IPS_SAMPLE_COUNT, GFP_KERNEL); + mcp_samples = kcalloc(IPS_SAMPLE_COUNT, sizeof(u16), GFP_KERNEL); + ctv1_samples = kcalloc(IPS_SAMPLE_COUNT, sizeof(u16), GFP_KERNEL); + ctv2_samples = kcalloc(IPS_SAMPLE_COUNT, sizeof(u16), GFP_KERNEL); + mch_samples = kcalloc(IPS_SAMPLE_COUNT, sizeof(u16), GFP_KERNEL); + cpu_samples = kcalloc(IPS_SAMPLE_COUNT, sizeof(u32), GFP_KERNEL); + mchp_samples = kcalloc(IPS_SAMPLE_COUNT, sizeof(u32), GFP_KERNEL); if (!mcp_samples || !ctv1_samples || !ctv2_samples || !mch_samples || !cpu_samples || !mchp_samples) { dev_err(ips->dev, diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c index 5c39b3211709..8361ad75389a 100644 --- a/drivers/platform/x86/panasonic-laptop.c +++ b/drivers/platform/x86/panasonic-laptop.c @@ -571,7 +571,7 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device) return -ENOMEM; } - pcc->sinf = kzalloc(sizeof(u32) * (num_sifr + 1), GFP_KERNEL); + pcc->sinf = kcalloc(num_sifr + 1, sizeof(u32), GFP_KERNEL); if (!pcc->sinf) { result = -ENOMEM; goto out_hotkey; diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index da1ca4856ea1..ab2d28867c52 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -6006,7 +6006,7 @@ static int __init led_init(struct ibm_init_struct *iibm) if (led_supported == TPACPI_LED_NONE) return 1; - tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, + tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), GFP_KERNEL); if (!tpacpi_leds) { pr_err("Out of memory for LED data\n"); diff --git a/drivers/power/supply/wm97xx_battery.c b/drivers/power/supply/wm97xx_battery.c index bd4f66651513..6754e761778a 100644 --- a/drivers/power/supply/wm97xx_battery.c +++ b/drivers/power/supply/wm97xx_battery.c @@ -201,7 +201,7 @@ static int wm97xx_bat_probe(struct platform_device *dev) if (pdata->min_voltage >= 0) props++; /* POWER_SUPPLY_PROP_VOLTAGE_MIN */ - prop = kzalloc(props * sizeof(*prop), GFP_KERNEL); + prop = kcalloc(props, sizeof(*prop), GFP_KERNEL); if (!prop) { ret = -ENOMEM; goto err3; diff --git a/drivers/power/supply/z2_battery.c b/drivers/power/supply/z2_battery.c index 8a43b49cfd35..bcc2d1a9b0a7 100644 --- a/drivers/power/supply/z2_battery.c +++ b/drivers/power/supply/z2_battery.c @@ -146,7 +146,7 @@ static int z2_batt_ps_init(struct z2_charger *charger, int props) if (info->min_voltage >= 0) props++; /* POWER_SUPPLY_PROP_VOLTAGE_MIN */ - prop = kzalloc(props * sizeof(*prop), GFP_KERNEL); + prop = kcalloc(props, sizeof(*prop), GFP_KERNEL); if (!prop) return -ENOMEM; diff --git a/drivers/powercap/powercap_sys.c b/drivers/powercap/powercap_sys.c index 64b2b2501a79..9e2f274bd44f 100644 --- a/drivers/powercap/powercap_sys.c +++ b/drivers/powercap/powercap_sys.c @@ -545,15 +545,16 @@ struct powercap_zone *powercap_register_zone( dev_set_name(&power_zone->dev, "%s:%x", dev_name(power_zone->dev.parent), power_zone->id); - power_zone->constraints = kzalloc(sizeof(*power_zone->constraints) * - nr_constraints, GFP_KERNEL); + power_zone->constraints = kcalloc(nr_constraints, + sizeof(*power_zone->constraints), + GFP_KERNEL); if (!power_zone->constraints) goto err_const_alloc; nr_attrs = nr_constraints * POWERCAP_CONSTRAINTS_ATTRS + POWERCAP_ZONE_MAX_ATTRS + 1; - power_zone->zone_dev_attrs = kzalloc(sizeof(void *) * - nr_attrs, GFP_KERNEL); + power_zone->zone_dev_attrs = kcalloc(nr_attrs, sizeof(void *), + GFP_KERNEL); if (!power_zone->zone_dev_attrs) goto err_attr_alloc; create_power_zone_common_attributes(power_zone); diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c index 161b927d9de1..fd7b517132ac 100644 --- a/drivers/rapidio/rio-scan.c +++ b/drivers/rapidio/rio-scan.c @@ -425,9 +425,9 @@ static struct rio_dev *rio_setup_device(struct rio_net *net, rswitch = rdev->rswitch; rswitch->port_ok = 0; spin_lock_init(&rswitch->lock); - rswitch->route_table = kzalloc(sizeof(u8)* - RIO_MAX_ROUTE_ENTRIES(port->sys_size), - GFP_KERNEL); + rswitch->route_table = + kzalloc(RIO_MAX_ROUTE_ENTRIES(port->sys_size), + GFP_KERNEL); if (!rswitch->route_table) goto cleanup; /* Initialize switch route table */ diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c index 7726b874e539..b4e588cce03d 100644 --- a/drivers/regulator/s2mps11.c +++ b/drivers/regulator/s2mps11.c @@ -1162,7 +1162,7 @@ static int s2mps11_pmic_probe(struct platform_device *pdev) } } - rdata = kzalloc(sizeof(*rdata) * rdev_num, GFP_KERNEL); + rdata = kcalloc(rdev_num, sizeof(*rdata), GFP_KERNEL); if (!rdata) return -ENOMEM; diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c index 29024492b8ed..ed607288e696 100644 --- a/drivers/s390/block/dcssblk.c +++ b/drivers/s390/block/dcssblk.c @@ -238,9 +238,9 @@ dcssblk_is_continuous(struct dcssblk_dev_info *dev_info) if (dev_info->num_of_segments <= 1) return 0; - sort_list = kzalloc( - sizeof(struct segment_info) * dev_info->num_of_segments, - GFP_KERNEL); + sort_list = kcalloc(dev_info->num_of_segments, + sizeof(struct segment_info), + GFP_KERNEL); if (sort_list == NULL) return -ENOMEM; i = 0; diff --git a/drivers/s390/char/keyboard.c b/drivers/s390/char/keyboard.c index db1fbf9b00b5..79eb60958015 100644 --- a/drivers/s390/char/keyboard.c +++ b/drivers/s390/char/keyboard.c @@ -78,7 +78,7 @@ kbd_alloc(void) { } } kbd->fn_handler = - kzalloc(sizeof(fn_handler_fn *) * NR_FN_HANDLER, GFP_KERNEL); + kcalloc(NR_FN_HANDLER, sizeof(fn_handler_fn *), GFP_KERNEL); if (!kbd->fn_handler) goto out_func; kbd->accent_table = kmemdup(ebc_accent_table, diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c index 52aa89424318..cbde65ab2170 100644 --- a/drivers/s390/char/vmur.c +++ b/drivers/s390/char/vmur.c @@ -242,7 +242,7 @@ static struct ccw1 *alloc_chan_prog(const char __user *ubuf, int rec_count, * That means we allocate room for CCWs to cover count/reclen * records plus a NOP. */ - cpa = kzalloc((rec_count + 1) * sizeof(struct ccw1), + cpa = kcalloc(rec_count + 1, sizeof(struct ccw1), GFP_KERNEL | GFP_DMA); if (!cpa) return ERR_PTR(-ENOMEM); diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c index 4369662cfff5..76d3c50bf078 100644 --- a/drivers/s390/char/zcore.c +++ b/drivers/s390/char/zcore.c @@ -152,7 +152,7 @@ static int zcore_memmap_open(struct inode *inode, struct file *filp) char *buf; int i = 0; - buf = kzalloc(memblock.memory.cnt * CHUNK_INFO_SIZE, GFP_KERNEL); + buf = kcalloc(memblock.memory.cnt, CHUNK_INFO_SIZE, GFP_KERNEL); if (!buf) { return -ENOMEM; } diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index 4c14ce428e92..78f1be41b05e 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/drivers/s390/cio/qdio_setup.c @@ -536,7 +536,7 @@ void qdio_print_subchannel_info(struct qdio_irq *irq_ptr, int qdio_enable_async_operation(struct qdio_output_q *outq) { - outq->aobs = kzalloc(sizeof(struct qaob *) * QDIO_MAX_BUFFERS_PER_Q, + outq->aobs = kcalloc(QDIO_MAX_BUFFERS_PER_Q, sizeof(struct qaob *), GFP_ATOMIC); if (!outq->aobs) { outq->use_cq = 0; diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c index 0787b587e4b8..07dea602205b 100644 --- a/drivers/s390/cio/qdio_thinint.c +++ b/drivers/s390/cio/qdio_thinint.c @@ -241,8 +241,9 @@ out: /* allocate non-shared indicators and shared indicator */ int __init tiqdio_allocate_memory(void) { - q_indicators = kzalloc(sizeof(struct indicator_t) * TIQDIO_NR_INDICATORS, - GFP_KERNEL); + q_indicators = kcalloc(TIQDIO_NR_INDICATORS, + sizeof(struct indicator_t), + GFP_KERNEL); if (!q_indicators) return -ENOMEM; return 0; diff --git a/drivers/s390/crypto/pkey_api.c b/drivers/s390/crypto/pkey_api.c index a9ae827cc1ce..3929c8be8098 100644 --- a/drivers/s390/crypto/pkey_api.c +++ b/drivers/s390/crypto/pkey_api.c @@ -121,7 +121,7 @@ static int alloc_and_prep_cprbmem(size_t paramblen, * allocate consecutive memory for request CPRB, request param * block, reply CPRB and reply param block */ - cprbmem = kzalloc(2 * cprbplusparamblen, GFP_KERNEL); + cprbmem = kcalloc(2, cprbplusparamblen, GFP_KERNEL); if (!cprbmem) return -ENOMEM; diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c index 7ce98b70cad3..7617d21cb296 100644 --- a/drivers/s390/net/ctcm_main.c +++ b/drivers/s390/net/ctcm_main.c @@ -1379,7 +1379,7 @@ static int add_channel(struct ccw_device *cdev, enum ctcm_channel_types type, } else ccw_num = 8; - ch->ccw = kzalloc(ccw_num * sizeof(struct ccw1), GFP_KERNEL | GFP_DMA); + ch->ccw = kcalloc(ccw_num, sizeof(struct ccw1), GFP_KERNEL | GFP_DMA); if (ch->ccw == NULL) goto nomem_return; diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 9f28b6f2efc4..8e1474f1ffac 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -374,9 +374,10 @@ static int qeth_alloc_cq(struct qeth_card *card) } card->qdio.no_in_queues = 2; card->qdio.out_bufstates = - kzalloc(card->qdio.no_out_queues * - QDIO_MAX_BUFFERS_PER_Q * - sizeof(struct qdio_outbuf_state), GFP_KERNEL); + kcalloc(card->qdio.no_out_queues * + QDIO_MAX_BUFFERS_PER_Q, + sizeof(struct qdio_outbuf_state), + GFP_KERNEL); outbuf_states = card->qdio.out_bufstates; if (outbuf_states == NULL) { rc = -1; @@ -2538,8 +2539,9 @@ static int qeth_alloc_qdio_buffers(struct qeth_card *card) /* outbound */ card->qdio.out_qs = - kzalloc(card->qdio.no_out_queues * - sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); + kcalloc(card->qdio.no_out_queues, + sizeof(struct qeth_qdio_out_q *), + GFP_KERNEL); if (!card->qdio.out_qs) goto out_freepool; for (i = 0; i < card->qdio.no_out_queues; ++i) { @@ -4963,8 +4965,8 @@ static int qeth_qdio_establish(struct qeth_card *card) QETH_DBF_TEXT(SETUP, 2, "qdioest"); - qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), - GFP_KERNEL); + qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q, + GFP_KERNEL); if (!qib_param_field) { rc = -ENOMEM; goto out_free_nothing; @@ -4973,8 +4975,8 @@ static int qeth_qdio_establish(struct qeth_card *card) qeth_create_qib_param_field(card, qib_param_field); qeth_create_qib_param_field_blkt(card, qib_param_field); - in_sbal_ptrs = kzalloc(card->qdio.no_in_queues * - QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), + in_sbal_ptrs = kcalloc(card->qdio.no_in_queues * QDIO_MAX_BUFFERS_PER_Q, + sizeof(void *), GFP_KERNEL); if (!in_sbal_ptrs) { rc = -ENOMEM; @@ -4985,7 +4987,7 @@ static int qeth_qdio_establish(struct qeth_card *card) virt_to_phys(card->qdio.in_q->bufs[i].buffer); } - queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues, + queue_start_poll = kcalloc(card->qdio.no_in_queues, sizeof(void *), GFP_KERNEL); if (!queue_start_poll) { rc = -ENOMEM; @@ -4997,8 +4999,9 @@ static int qeth_qdio_establish(struct qeth_card *card) qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll); out_sbal_ptrs = - kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * - sizeof(void *), GFP_KERNEL); + kcalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q, + sizeof(void *), + GFP_KERNEL); if (!out_sbal_ptrs) { rc = -ENOMEM; goto out_free_queue_start_poll; diff --git a/drivers/scsi/BusLogic.c b/drivers/scsi/BusLogic.c index 35380a58d3f0..0d4ffe0ae306 100644 --- a/drivers/scsi/BusLogic.c +++ b/drivers/scsi/BusLogic.c @@ -2366,7 +2366,7 @@ static int __init blogic_init(void) if (blogic_probe_options.noprobe) return -ENODEV; blogic_probeinfo_list = - kzalloc(BLOGIC_MAX_ADAPTERS * sizeof(struct blogic_probeinfo), + kcalloc(BLOGIC_MAX_ADAPTERS, sizeof(struct blogic_probeinfo), GFP_KERNEL); if (blogic_probeinfo_list == NULL) { blogic_err("BusLogic: Unable to allocate Probe Info List\n", diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index f24fb942065d..04443577d48b 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -1681,7 +1681,9 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) if (aac_reset_devices || reset_devices) aac->init_reset = true; - aac->fibs = kzalloc(sizeof(struct fib) * (shost->can_queue + AAC_NUM_MGT_FIB), GFP_KERNEL); + aac->fibs = kcalloc(shost->can_queue + AAC_NUM_MGT_FIB, + sizeof(struct fib), + GFP_KERNEL); if (!aac->fibs) goto out_free_host; spin_lock_init(&aac->fib_lock); diff --git a/drivers/scsi/aic7xxx/aic7xxx_core.c b/drivers/scsi/aic7xxx/aic7xxx_core.c index e97eceacf522..915a34f141e4 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_core.c +++ b/drivers/scsi/aic7xxx/aic7xxx_core.c @@ -4779,8 +4779,8 @@ ahc_init_scbdata(struct ahc_softc *ahc) SLIST_INIT(&scb_data->sg_maps); /* Allocate SCB resources */ - scb_data->scbarray = kzalloc(sizeof(struct scb) * AHC_SCB_MAX_ALLOC, - GFP_ATOMIC); + scb_data->scbarray = kcalloc(AHC_SCB_MAX_ALLOC, sizeof(struct scb), + GFP_ATOMIC); if (scb_data->scbarray == NULL) return (ENOMEM); diff --git a/drivers/scsi/aic94xx/aic94xx_hwi.c b/drivers/scsi/aic94xx/aic94xx_hwi.c index 35e0b5b64e8f..3b8ad55e59de 100644 --- a/drivers/scsi/aic94xx/aic94xx_hwi.c +++ b/drivers/scsi/aic94xx/aic94xx_hwi.c @@ -220,8 +220,9 @@ static int asd_init_scbs(struct asd_ha_struct *asd_ha) /* allocate the index array and bitmap */ asd_ha->seq.tc_index_bitmap_bits = asd_ha->hw_prof.max_scbs; - asd_ha->seq.tc_index_array = kzalloc(asd_ha->seq.tc_index_bitmap_bits* - sizeof(void *), GFP_KERNEL); + asd_ha->seq.tc_index_array = kcalloc(asd_ha->seq.tc_index_bitmap_bits, + sizeof(void *), + GFP_KERNEL); if (!asd_ha->seq.tc_index_array) return -ENOMEM; diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c index 6c838865ac5a..80e5b283fd81 100644 --- a/drivers/scsi/aic94xx/aic94xx_init.c +++ b/drivers/scsi/aic94xx/aic94xx_init.c @@ -350,7 +350,7 @@ static ssize_t asd_store_update_bios(struct device *dev, int flash_command = FLASH_CMD_NONE; int err = 0; - cmd_ptr = kzalloc(count*2, GFP_KERNEL); + cmd_ptr = kcalloc(count, 2, GFP_KERNEL); if (!cmd_ptr) { err = FAIL_OUT_MEMORY; diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index d981c16cd611..818d185d63f0 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -2467,8 +2467,8 @@ static int beiscsi_alloc_mem(struct beiscsi_hba *phba) /* Allocate memory for wrb_context */ phwi_ctrlr = phba->phwi_ctrlr; - phwi_ctrlr->wrb_context = kzalloc(sizeof(struct hwi_wrb_context) * - phba->params.cxns_per_ctrl, + phwi_ctrlr->wrb_context = kcalloc(phba->params.cxns_per_ctrl, + sizeof(struct hwi_wrb_context), GFP_KERNEL); if (!phwi_ctrlr->wrb_context) { kfree(phba->phwi_ctrlr); @@ -2621,8 +2621,8 @@ static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba) /* Allocate memory for WRBQ */ phwi_ctxt = phwi_ctrlr->phwi_ctxt; - phwi_ctxt->be_wrbq = kzalloc(sizeof(struct be_queue_info) * - phba->params.cxns_per_ctrl, + phwi_ctxt->be_wrbq = kcalloc(phba->params.cxns_per_ctrl, + sizeof(struct be_queue_info), GFP_KERNEL); if (!phwi_ctxt->be_wrbq) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, @@ -2633,16 +2633,18 @@ static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba) for (index = 0; index < phba->params.cxns_per_ctrl; index++) { pwrb_context = &phwi_ctrlr->wrb_context[index]; pwrb_context->pwrb_handle_base = - kzalloc(sizeof(struct wrb_handle *) * - phba->params.wrbs_per_cxn, GFP_KERNEL); + kcalloc(phba->params.wrbs_per_cxn, + sizeof(struct wrb_handle *), + GFP_KERNEL); if (!pwrb_context->pwrb_handle_base) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Mem Alloc Failed. Failing to load\n"); goto init_wrb_hndl_failed; } pwrb_context->pwrb_handle_basestd = - kzalloc(sizeof(struct wrb_handle *) * - phba->params.wrbs_per_cxn, GFP_KERNEL); + kcalloc(phba->params.wrbs_per_cxn, + sizeof(struct wrb_handle *), + GFP_KERNEL); if (!pwrb_context->pwrb_handle_basestd) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Mem Alloc Failed. Failing to load\n"); @@ -3896,18 +3898,18 @@ static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba) mem_descr_sglh = phba->init_mem; mem_descr_sglh += HWI_MEM_SGLH; if (1 == mem_descr_sglh->num_elements) { - phba->io_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) * - phba->params.ios_per_ctrl, + phba->io_sgl_hndl_base = kcalloc(phba->params.ios_per_ctrl, + sizeof(struct sgl_handle *), GFP_KERNEL); if (!phba->io_sgl_hndl_base) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Mem Alloc Failed. Failing to load\n"); return -ENOMEM; } - phba->eh_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) * - (phba->params.icds_per_ctrl - - phba->params.ios_per_ctrl), - GFP_KERNEL); + phba->eh_sgl_hndl_base = + kcalloc(phba->params.icds_per_ctrl - + phba->params.ios_per_ctrl, + sizeof(struct sgl_handle *), GFP_KERNEL); if (!phba->eh_sgl_hndl_base) { kfree(phba->io_sgl_hndl_base); beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, @@ -4034,8 +4036,9 @@ static int hba_setup_cid_tbls(struct beiscsi_hba *phba) phba->cid_array_info[ulp_num] = ptr_cid_info; } } - phba->ep_array = kzalloc(sizeof(struct iscsi_endpoint *) * - phba->params.cxns_per_ctrl, GFP_KERNEL); + phba->ep_array = kcalloc(phba->params.cxns_per_ctrl, + sizeof(struct iscsi_endpoint *), + GFP_KERNEL); if (!phba->ep_array) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Failed to allocate memory in " @@ -4045,8 +4048,9 @@ static int hba_setup_cid_tbls(struct beiscsi_hba *phba) goto free_memory; } - phba->conn_table = kzalloc(sizeof(struct beiscsi_conn *) * - phba->params.cxns_per_ctrl, GFP_KERNEL); + phba->conn_table = kcalloc(phba->params.cxns_per_ctrl, + sizeof(struct beiscsi_conn *), + GFP_KERNEL); if (!phba->conn_table) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Failed to allocate memory in" diff --git a/drivers/scsi/bfa/bfad_attr.c b/drivers/scsi/bfa/bfad_attr.c index d4d276c757ea..26b0fa4e90b5 100644 --- a/drivers/scsi/bfa/bfad_attr.c +++ b/drivers/scsi/bfa/bfad_attr.c @@ -927,7 +927,7 @@ bfad_im_num_of_discovered_ports_show(struct device *dev, struct bfa_rport_qualifier_s *rports = NULL; unsigned long flags; - rports = kzalloc(sizeof(struct bfa_rport_qualifier_s) * nrports, + rports = kcalloc(nrports, sizeof(struct bfa_rport_qualifier_s), GFP_ATOMIC); if (rports == NULL) return snprintf(buf, PAGE_SIZE, "Failed\n"); diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c index 7c884f881180..5d163ca1b366 100644 --- a/drivers/scsi/bfa/bfad_bsg.c +++ b/drivers/scsi/bfa/bfad_bsg.c @@ -3252,8 +3252,9 @@ bfad_fcxp_map_sg(struct bfad_s *bfad, void *payload_kbuf, struct bfa_sge_s *sg_table; int sge_num = 1; - buf_base = kzalloc((sizeof(struct bfad_buf_info) + - sizeof(struct bfa_sge_s)) * sge_num, GFP_KERNEL); + buf_base = kcalloc(sizeof(struct bfad_buf_info) + + sizeof(struct bfa_sge_s), + sge_num, GFP_KERNEL); if (!buf_base) return NULL; diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c index 65de1d0578a1..f00045813378 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c +++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c @@ -1397,7 +1397,7 @@ static struct bnx2fc_hba *bnx2fc_hba_create(struct cnic_dev *cnic) hba->next_conn_id = 0; hba->tgt_ofld_list = - kzalloc(sizeof(struct bnx2fc_rport *) * BNX2FC_NUM_MAX_SESS, + kcalloc(BNX2FC_NUM_MAX_SESS, sizeof(struct bnx2fc_rport *), GFP_KERNEL); if (!hba->tgt_ofld_list) { printk(KERN_ERR PFX "Unable to allocate tgt offload list\n"); diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index 5a645b8b9af1..350257c13a5b 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c @@ -240,15 +240,15 @@ struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba) return NULL; } - cmgr->free_list = kzalloc(sizeof(*cmgr->free_list) * - arr_sz, GFP_KERNEL); + cmgr->free_list = kcalloc(arr_sz, sizeof(*cmgr->free_list), + GFP_KERNEL); if (!cmgr->free_list) { printk(KERN_ERR PFX "failed to alloc free_list\n"); goto mem_err; } - cmgr->free_list_lock = kzalloc(sizeof(*cmgr->free_list_lock) * - arr_sz, GFP_KERNEL); + cmgr->free_list_lock = kcalloc(arr_sz, sizeof(*cmgr->free_list_lock), + GFP_KERNEL); if (!cmgr->free_list_lock) { printk(KERN_ERR PFX "failed to alloc free_list_lock\n"); kfree(cmgr->free_list); diff --git a/drivers/scsi/csiostor/csio_wr.c b/drivers/scsi/csiostor/csio_wr.c index c0a17789752f..faa357b62c61 100644 --- a/drivers/scsi/csiostor/csio_wr.c +++ b/drivers/scsi/csiostor/csio_wr.c @@ -276,7 +276,7 @@ csio_wr_alloc_q(struct csio_hw *hw, uint32_t qsize, uint32_t wrsize, q->un.iq.flq_idx = flq_idx; flq = wrm->q_arr[q->un.iq.flq_idx]; - flq->un.fl.bufs = kzalloc(flq->credits * + flq->un.fl.bufs = kcalloc(flq->credits, sizeof(struct csio_dma_buf), GFP_KERNEL); if (!flq->un.fl.bufs) { @@ -1579,7 +1579,7 @@ csio_wrm_init(struct csio_wrm *wrm, struct csio_hw *hw) return -EINVAL; } - wrm->q_arr = kzalloc(sizeof(struct csio_q *) * wrm->num_q, GFP_KERNEL); + wrm->q_arr = kcalloc(wrm->num_q, sizeof(struct csio_q *), GFP_KERNEL); if (!wrm->q_arr) goto err; diff --git a/drivers/scsi/esas2r/esas2r_init.c b/drivers/scsi/esas2r/esas2r_init.c index 9db645dde35e..bbe77db8938d 100644 --- a/drivers/scsi/esas2r/esas2r_init.c +++ b/drivers/scsi/esas2r/esas2r_init.c @@ -833,7 +833,7 @@ bool esas2r_init_adapter_struct(struct esas2r_adapter *a, /* allocate requests for asynchronous events */ a->first_ae_req = - kzalloc(num_ae_requests * sizeof(struct esas2r_request), + kcalloc(num_ae_requests, sizeof(struct esas2r_request), GFP_KERNEL); if (a->first_ae_req == NULL) { @@ -843,8 +843,8 @@ bool esas2r_init_adapter_struct(struct esas2r_adapter *a, } /* allocate the S/G list memory descriptors */ - a->sg_list_mds = kzalloc( - num_sg_lists * sizeof(struct esas2r_mem_desc), GFP_KERNEL); + a->sg_list_mds = kcalloc(num_sg_lists, sizeof(struct esas2r_mem_desc), + GFP_KERNEL); if (a->sg_list_mds == NULL) { esas2r_log(ESAS2R_LOG_CRIT, @@ -854,8 +854,9 @@ bool esas2r_init_adapter_struct(struct esas2r_adapter *a, /* allocate the request table */ a->req_table = - kzalloc((num_requests + num_ae_requests + - 1) * sizeof(struct esas2r_request *), GFP_KERNEL); + kcalloc(num_requests + num_ae_requests + 1, + sizeof(struct esas2r_request *), + GFP_KERNEL); if (a->req_table == NULL) { esas2r_log(ESAS2R_LOG_CRIT, diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index e6f31fa9ec65..af0e628ff396 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -1923,8 +1923,8 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, } spin_unlock_irqrestore(&h->reset_lock, flags); - added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL); - removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL); + added = kcalloc(HPSA_MAX_DEVICES, sizeof(*added), GFP_KERNEL); + removed = kcalloc(HPSA_MAX_DEVICES, sizeof(*removed), GFP_KERNEL); if (!added || !removed) { dev_warn(&h->pdev->dev, "out of memory in " @@ -2171,7 +2171,7 @@ static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h) return 0; h->ioaccel2_cmd_sg_list = - kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds, + kcalloc(h->nr_cmds, sizeof(*h->ioaccel2_cmd_sg_list), GFP_KERNEL); if (!h->ioaccel2_cmd_sg_list) return -ENOMEM; @@ -2211,8 +2211,8 @@ static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h) if (h->chainsize <= 0) return 0; - h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds, - GFP_KERNEL); + h->cmd_sg_list = kcalloc(h->nr_cmds, sizeof(*h->cmd_sg_list), + GFP_KERNEL); if (!h->cmd_sg_list) return -ENOMEM; @@ -4321,7 +4321,7 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h) bool physical_device; DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS); - currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL); + currentsd = kcalloc(HPSA_MAX_DEVICES, sizeof(*currentsd), GFP_KERNEL); physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL); logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL); tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); @@ -6404,7 +6404,7 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) status = -EINVAL; goto cleanup1; } - buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL); + buff = kcalloc(SG_ENTRIES_IN_CMD, sizeof(char *), GFP_KERNEL); if (!buff) { status = -ENOMEM; goto cleanup1; @@ -7933,9 +7933,9 @@ static void hpsa_free_cmd_pool(struct ctlr_info *h) static int hpsa_alloc_cmd_pool(struct ctlr_info *h) { - h->cmd_pool_bits = kzalloc( - DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) * - sizeof(unsigned long), GFP_KERNEL); + h->cmd_pool_bits = kcalloc(DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG), + sizeof(unsigned long), + GFP_KERNEL); h->cmd_pool = pci_alloc_consistent(h->pdev, h->nr_cmds * sizeof(*h->cmd_pool), &(h->cmd_pool_dhandle)); @@ -8509,7 +8509,7 @@ static struct ctlr_info *hpda_alloc_ctlr_info(void) if (!h) return NULL; - h->reply_map = kzalloc(sizeof(*h->reply_map) * nr_cpu_ids, GFP_KERNEL); + h->reply_map = kcalloc(nr_cpu_ids, sizeof(*h->reply_map), GFP_KERNEL); if (!h->reply_map) { kfree(h); return NULL; diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 6615ad8754b8..e63785d5df32 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -9713,8 +9713,9 @@ static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) int i, rc = -ENOMEM; ENTER; - ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) * - ioa_cfg->max_devs_supported, GFP_KERNEL); + ioa_cfg->res_entries = kcalloc(ioa_cfg->max_devs_supported, + sizeof(struct ipr_resource_entry), + GFP_KERNEL); if (!ioa_cfg->res_entries) goto out; @@ -9775,8 +9776,9 @@ static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg) list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q); } - ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) * - IPR_NUM_TRACE_ENTRIES, GFP_KERNEL); + ioa_cfg->trace = kcalloc(IPR_NUM_TRACE_ENTRIES, + sizeof(struct ipr_trace_entry), + GFP_KERNEL); if (!ioa_cfg->trace) goto out_free_hostrcb_dma; diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 8b7114348def..fadc99cb60df 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -443,7 +443,7 @@ static int sas_expander_discover(struct domain_device *dev) struct expander_device *ex = &dev->ex_dev; int res = -ENOMEM; - ex->ex_phy = kzalloc(sizeof(*ex->ex_phy)*ex->num_phys, GFP_KERNEL); + ex->ex_phy = kcalloc(ex->num_phys, sizeof(*ex->ex_phy), GFP_KERNEL); if (!ex->ex_phy) return -ENOMEM; diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 7ae343b14630..52cae87da0d2 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -5723,8 +5723,9 @@ lpfc_sli_driver_resource_setup(struct lpfc_hba *phba) } if (!phba->sli.sli3_ring) - phba->sli.sli3_ring = kzalloc(LPFC_SLI3_MAX_RING * - sizeof(struct lpfc_sli_ring), GFP_KERNEL); + phba->sli.sli3_ring = kcalloc(LPFC_SLI3_MAX_RING, + sizeof(struct lpfc_sli_ring), + GFP_KERNEL); if (!phba->sli.sli3_ring) return -ENOMEM; @@ -6233,7 +6234,7 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba) /* Allocate eligible FCF bmask memory for FCF roundrobin failover */ longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG; - phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long), + phba->fcf.fcf_rr_bmask = kcalloc(longs, sizeof(unsigned long), GFP_KERNEL); if (!phba->fcf.fcf_rr_bmask) { lpfc_printf_log(phba, KERN_ERR, LOG_INIT, diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 4b70d53acb72..6f3c00a233ec 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -1720,7 +1720,7 @@ lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) - LPFC_IOCBQ_LOOKUP_INCREMENT)) { new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT; spin_unlock_irq(&phba->hbalock); - new_arr = kzalloc(new_len * sizeof (struct lpfc_iocbq *), + new_arr = kcalloc(new_len, sizeof(struct lpfc_iocbq *), GFP_KERNEL); if (new_arr) { spin_lock_irq(&phba->hbalock); @@ -5142,16 +5142,17 @@ lpfc_sli_hba_setup(struct lpfc_hba *phba) */ if ((phba->vpi_bmask == NULL) && (phba->vpi_ids == NULL)) { longs = (phba->max_vpi + BITS_PER_LONG) / BITS_PER_LONG; - phba->vpi_bmask = kzalloc(longs * sizeof(unsigned long), + phba->vpi_bmask = kcalloc(longs, + sizeof(unsigned long), GFP_KERNEL); if (!phba->vpi_bmask) { rc = -ENOMEM; goto lpfc_sli_hba_setup_error; } - phba->vpi_ids = kzalloc( - (phba->max_vpi+1) * sizeof(uint16_t), - GFP_KERNEL); + phba->vpi_ids = kcalloc(phba->max_vpi + 1, + sizeof(uint16_t), + GFP_KERNEL); if (!phba->vpi_ids) { kfree(phba->vpi_bmask); rc = -ENOMEM; @@ -5836,14 +5837,14 @@ lpfc_sli4_alloc_extent(struct lpfc_hba *phba, uint16_t type) length = sizeof(struct lpfc_rsrc_blks); switch (type) { case LPFC_RSC_TYPE_FCOE_RPI: - phba->sli4_hba.rpi_bmask = kzalloc(longs * + phba->sli4_hba.rpi_bmask = kcalloc(longs, sizeof(unsigned long), GFP_KERNEL); if (unlikely(!phba->sli4_hba.rpi_bmask)) { rc = -ENOMEM; goto err_exit; } - phba->sli4_hba.rpi_ids = kzalloc(rsrc_id_cnt * + phba->sli4_hba.rpi_ids = kcalloc(rsrc_id_cnt, sizeof(uint16_t), GFP_KERNEL); if (unlikely(!phba->sli4_hba.rpi_ids)) { @@ -5865,15 +5866,13 @@ lpfc_sli4_alloc_extent(struct lpfc_hba *phba, uint16_t type) ext_blk_list = &phba->sli4_hba.lpfc_rpi_blk_list; break; case LPFC_RSC_TYPE_FCOE_VPI: - phba->vpi_bmask = kzalloc(longs * - sizeof(unsigned long), + phba->vpi_bmask = kcalloc(longs, sizeof(unsigned long), GFP_KERNEL); if (unlikely(!phba->vpi_bmask)) { rc = -ENOMEM; goto err_exit; } - phba->vpi_ids = kzalloc(rsrc_id_cnt * - sizeof(uint16_t), + phba->vpi_ids = kcalloc(rsrc_id_cnt, sizeof(uint16_t), GFP_KERNEL); if (unlikely(!phba->vpi_ids)) { kfree(phba->vpi_bmask); @@ -5887,7 +5886,7 @@ lpfc_sli4_alloc_extent(struct lpfc_hba *phba, uint16_t type) ext_blk_list = &phba->lpfc_vpi_blk_list; break; case LPFC_RSC_TYPE_FCOE_XRI: - phba->sli4_hba.xri_bmask = kzalloc(longs * + phba->sli4_hba.xri_bmask = kcalloc(longs, sizeof(unsigned long), GFP_KERNEL); if (unlikely(!phba->sli4_hba.xri_bmask)) { @@ -5895,7 +5894,7 @@ lpfc_sli4_alloc_extent(struct lpfc_hba *phba, uint16_t type) goto err_exit; } phba->sli4_hba.max_cfg_param.xri_used = 0; - phba->sli4_hba.xri_ids = kzalloc(rsrc_id_cnt * + phba->sli4_hba.xri_ids = kcalloc(rsrc_id_cnt, sizeof(uint16_t), GFP_KERNEL); if (unlikely(!phba->sli4_hba.xri_ids)) { @@ -5910,14 +5909,14 @@ lpfc_sli4_alloc_extent(struct lpfc_hba *phba, uint16_t type) ext_blk_list = &phba->sli4_hba.lpfc_xri_blk_list; break; case LPFC_RSC_TYPE_FCOE_VFI: - phba->sli4_hba.vfi_bmask = kzalloc(longs * + phba->sli4_hba.vfi_bmask = kcalloc(longs, sizeof(unsigned long), GFP_KERNEL); if (unlikely(!phba->sli4_hba.vfi_bmask)) { rc = -ENOMEM; goto err_exit; } - phba->sli4_hba.vfi_ids = kzalloc(rsrc_id_cnt * + phba->sli4_hba.vfi_ids = kcalloc(rsrc_id_cnt, sizeof(uint16_t), GFP_KERNEL); if (unlikely(!phba->sli4_hba.vfi_ids)) { @@ -6250,15 +6249,14 @@ lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba) } base = phba->sli4_hba.max_cfg_param.rpi_base; longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG; - phba->sli4_hba.rpi_bmask = kzalloc(longs * + phba->sli4_hba.rpi_bmask = kcalloc(longs, sizeof(unsigned long), GFP_KERNEL); if (unlikely(!phba->sli4_hba.rpi_bmask)) { rc = -ENOMEM; goto err_exit; } - phba->sli4_hba.rpi_ids = kzalloc(count * - sizeof(uint16_t), + phba->sli4_hba.rpi_ids = kcalloc(count, sizeof(uint16_t), GFP_KERNEL); if (unlikely(!phba->sli4_hba.rpi_ids)) { rc = -ENOMEM; @@ -6279,15 +6277,13 @@ lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba) } base = phba->sli4_hba.max_cfg_param.vpi_base; longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG; - phba->vpi_bmask = kzalloc(longs * - sizeof(unsigned long), + phba->vpi_bmask = kcalloc(longs, sizeof(unsigned long), GFP_KERNEL); if (unlikely(!phba->vpi_bmask)) { rc = -ENOMEM; goto free_rpi_ids; } - phba->vpi_ids = kzalloc(count * - sizeof(uint16_t), + phba->vpi_ids = kcalloc(count, sizeof(uint16_t), GFP_KERNEL); if (unlikely(!phba->vpi_ids)) { rc = -ENOMEM; @@ -6308,7 +6304,7 @@ lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba) } base = phba->sli4_hba.max_cfg_param.xri_base; longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG; - phba->sli4_hba.xri_bmask = kzalloc(longs * + phba->sli4_hba.xri_bmask = kcalloc(longs, sizeof(unsigned long), GFP_KERNEL); if (unlikely(!phba->sli4_hba.xri_bmask)) { @@ -6316,8 +6312,7 @@ lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba) goto free_vpi_ids; } phba->sli4_hba.max_cfg_param.xri_used = 0; - phba->sli4_hba.xri_ids = kzalloc(count * - sizeof(uint16_t), + phba->sli4_hba.xri_ids = kcalloc(count, sizeof(uint16_t), GFP_KERNEL); if (unlikely(!phba->sli4_hba.xri_ids)) { rc = -ENOMEM; @@ -6338,15 +6333,14 @@ lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba) } base = phba->sli4_hba.max_cfg_param.vfi_base; longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG; - phba->sli4_hba.vfi_bmask = kzalloc(longs * + phba->sli4_hba.vfi_bmask = kcalloc(longs, sizeof(unsigned long), GFP_KERNEL); if (unlikely(!phba->sli4_hba.vfi_bmask)) { rc = -ENOMEM; goto free_xri_ids; } - phba->sli4_hba.vfi_ids = kzalloc(count * - sizeof(uint16_t), + phba->sli4_hba.vfi_ids = kcalloc(count, sizeof(uint16_t), GFP_KERNEL); if (unlikely(!phba->sli4_hba.vfi_ids)) { rc = -ENOMEM; diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c index c9d33b1268cb..81bc12dedf41 100644 --- a/drivers/scsi/lpfc/lpfc_vport.c +++ b/drivers/scsi/lpfc/lpfc_vport.c @@ -840,7 +840,7 @@ lpfc_create_vport_work_array(struct lpfc_hba *phba) struct lpfc_vport *port_iterator; struct lpfc_vport **vports; int index = 0; - vports = kzalloc((phba->max_vports + 1) * sizeof(struct lpfc_vport *), + vports = kcalloc(phba->max_vports + 1, sizeof(struct lpfc_vport *), GFP_KERNEL); if (vports == NULL) return NULL; diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index c5d0c4bd71d2..71d97573a667 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -5419,9 +5419,9 @@ static int megasas_init_fw(struct megasas_instance *instance) /* stream detection initialization */ if (instance->adapter_type == VENTURA_SERIES) { fusion->stream_detect_by_ld = - kzalloc(sizeof(struct LD_STREAM_DETECT *) - * MAX_LOGICAL_DRIVES_EXT, - GFP_KERNEL); + kcalloc(MAX_LOGICAL_DRIVES_EXT, + sizeof(struct LD_STREAM_DETECT *), + GFP_KERNEL); if (!fusion->stream_detect_by_ld) { dev_err(&instance->pdev->dev, "unable to allocate stream detection for pool of LDs\n"); @@ -6139,7 +6139,7 @@ static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance) */ static int megasas_alloc_ctrl_mem(struct megasas_instance *instance) { - instance->reply_map = kzalloc(sizeof(unsigned int) * nr_cpu_ids, + instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int), GFP_KERNEL); if (!instance->reply_map) return -ENOMEM; diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 98a7a090b75e..b965d4fe18ef 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -487,7 +487,7 @@ megasas_alloc_cmdlist_fusion(struct megasas_instance *instance) * commands. */ fusion->cmd_list = - kzalloc(sizeof(struct megasas_cmd_fusion *) * max_mpt_cmd, + kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *), GFP_KERNEL); if (!fusion->cmd_list) { dev_err(&instance->pdev->dev, diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c index 773c4bfeb0f8..928ee4e89813 100644 --- a/drivers/scsi/osst.c +++ b/drivers/scsi/osst.c @@ -381,7 +381,7 @@ static int osst_execute(struct osst_request *SRpnt, const unsigned char *cmd, struct scatterlist *sg, *sgl = (struct scatterlist *)buffer; int i; - pages = kzalloc(use_sg * sizeof(struct page *), GFP_KERNEL); + pages = kcalloc(use_sg, sizeof(struct page *), GFP_KERNEL); if (!pages) goto free_req; diff --git a/drivers/scsi/pm8001/pm8001_ctl.c b/drivers/scsi/pm8001/pm8001_ctl.c index 596f3ff965f5..d193961ea82f 100644 --- a/drivers/scsi/pm8001/pm8001_ctl.c +++ b/drivers/scsi/pm8001/pm8001_ctl.c @@ -705,7 +705,7 @@ static ssize_t pm8001_store_update_fw(struct device *cdev, return -EINPROGRESS; pm8001_ha->fw_status = FLASH_IN_PROGRESS; - cmd_ptr = kzalloc(count*2, GFP_KERNEL); + cmd_ptr = kcalloc(count, 2, GFP_KERNEL); if (!cmd_ptr) { pm8001_ha->fw_status = FAIL_OUT_MEMORY; return -ENOMEM; diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c index 95530393872d..4e86994e10e8 100644 --- a/drivers/scsi/pmcraid.c +++ b/drivers/scsi/pmcraid.c @@ -4873,8 +4873,9 @@ static int pmcraid_allocate_config_buffers(struct pmcraid_instance *pinstance) int i; pinstance->res_entries = - kzalloc(sizeof(struct pmcraid_resource_entry) * - PMCRAID_MAX_RESOURCES, GFP_KERNEL); + kcalloc(PMCRAID_MAX_RESOURCES, + sizeof(struct pmcraid_resource_entry), + GFP_KERNEL); if (NULL == pinstance->res_entries) { pmcraid_err("failed to allocate memory for resource table\n"); diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c index 32ee7f62fef9..cf274a79e77a 100644 --- a/drivers/scsi/qedi/qedi_main.c +++ b/drivers/scsi/qedi/qedi_main.c @@ -524,7 +524,7 @@ static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, id_tbl->max = size; id_tbl->next = next; spin_lock_init(&id_tbl->lock); - id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); + id_tbl->table = kcalloc(DIV_ROUND_UP(size, 32), 4, GFP_KERNEL); if (!id_tbl->table) return -ENOMEM; diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 1aa3720ea2ed..fbbb328c64d5 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -3089,8 +3089,9 @@ qla2x00_alloc_outstanding_cmds(struct qla_hw_data *ha, struct req_que *req) req->num_outstanding_cmds = ha->cur_fw_iocb_count; } - req->outstanding_cmds = kzalloc(sizeof(srb_t *) * - req->num_outstanding_cmds, GFP_KERNEL); + req->outstanding_cmds = kcalloc(req->num_outstanding_cmds, + sizeof(srb_t *), + GFP_KERNEL); if (!req->outstanding_cmds) { /* @@ -3098,8 +3099,9 @@ qla2x00_alloc_outstanding_cmds(struct qla_hw_data *ha, struct req_que *req) * initialization. */ req->num_outstanding_cmds = MIN_OUTSTANDING_COMMANDS; - req->outstanding_cmds = kzalloc(sizeof(srb_t *) * - req->num_outstanding_cmds, GFP_KERNEL); + req->outstanding_cmds = kcalloc(req->num_outstanding_cmds, + sizeof(srb_t *), + GFP_KERNEL); if (!req->outstanding_cmds) { ql_log(ql_log_fatal, NULL, 0x0126, diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index a3dc83f9444d..d14d3911516d 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -3434,8 +3434,9 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp) "Adjusted Max no of queues pairs: %d.\n", ha->max_qpairs); } } - ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) * - ha->msix_count, GFP_KERNEL); + ha->msix_entries = kcalloc(ha->msix_count, + sizeof(struct qla_msix_entry), + GFP_KERNEL); if (!ha->msix_entries) { ql_log(ql_log_fatal, vha, 0x00c8, "Failed to allocate memory for ha->msix_entries.\n"); diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 817c18a8e84d..e881fce7477a 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -410,7 +410,7 @@ static int qla2x00_alloc_queues(struct qla_hw_data *ha, struct req_que *req, struct rsp_que *rsp) { scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); - ha->req_q_map = kzalloc(sizeof(struct req_que *) * ha->max_req_queues, + ha->req_q_map = kcalloc(ha->max_req_queues, sizeof(struct req_que *), GFP_KERNEL); if (!ha->req_q_map) { ql_log(ql_log_fatal, vha, 0x003b, @@ -418,7 +418,7 @@ static int qla2x00_alloc_queues(struct qla_hw_data *ha, struct req_que *req, goto fail_req_map; } - ha->rsp_q_map = kzalloc(sizeof(struct rsp_que *) * ha->max_rsp_queues, + ha->rsp_q_map = kcalloc(ha->max_rsp_queues, sizeof(struct rsp_que *), GFP_KERNEL); if (!ha->rsp_q_map) { ql_log(ql_log_fatal, vha, 0x003c, @@ -4045,8 +4045,9 @@ qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len, (*rsp)->ring); /* Allocate memory for NVRAM data for vports */ if (ha->nvram_npiv_size) { - ha->npiv_info = kzalloc(sizeof(struct qla_npiv_entry) * - ha->nvram_npiv_size, GFP_KERNEL); + ha->npiv_info = kcalloc(ha->nvram_npiv_size, + sizeof(struct qla_npiv_entry), + GFP_KERNEL); if (!ha->npiv_info) { ql_log_pci(ql_log_fatal, ha->pdev, 0x002d, "Failed to allocate memory for npiv_info.\n"); @@ -4080,8 +4081,9 @@ qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len, INIT_LIST_HEAD(&ha->vp_list); /* Allocate memory for our loop_id bitmap */ - ha->loop_id_map = kzalloc(BITS_TO_LONGS(LOOPID_MAP_SIZE) * sizeof(long), - GFP_KERNEL); + ha->loop_id_map = kcalloc(BITS_TO_LONGS(LOOPID_MAP_SIZE), + sizeof(long), + GFP_KERNEL); if (!ha->loop_id_map) goto fail_loop_id_map; else { diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index b85c833099ff..0fea2e2326be 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -6248,8 +6248,9 @@ int qlt_add_target(struct qla_hw_data *ha, struct scsi_qla_host *base_vha) return -ENOMEM; } - tgt->qphints = kzalloc((ha->max_qpairs + 1) * - sizeof(struct qla_qpair_hint), GFP_KERNEL); + tgt->qphints = kcalloc(ha->max_qpairs + 1, + sizeof(struct qla_qpair_hint), + GFP_KERNEL); if (!tgt->qphints) { kfree(tgt); ql_log(ql_log_warn, base_vha, 0x0197, @@ -7089,8 +7090,9 @@ qlt_mem_alloc(struct qla_hw_data *ha) if (!QLA_TGT_MODE_ENABLED()) return 0; - ha->tgt.tgt_vp_map = kzalloc(sizeof(struct qla_tgt_vp_map) * - MAX_MULTI_ID_FABRIC, GFP_KERNEL); + ha->tgt.tgt_vp_map = kcalloc(MAX_MULTI_ID_FABRIC, + sizeof(struct qla_tgt_vp_map), + GFP_KERNEL); if (!ha->tgt.tgt_vp_map) return -ENOMEM; diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 656c98e116a9..798a6afa4cbf 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -3450,7 +3450,7 @@ static int resp_comp_write(struct scsi_cmnd *scp, return check_condition_result; } dnum = 2 * num; - arr = kzalloc(dnum * lb_size, GFP_ATOMIC); + arr = kcalloc(lb_size, dnum, GFP_ATOMIC); if (NULL == arr) { mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, INSUFF_RES_ASCQ); diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c index 62f04c0511cf..0fc39224ce1e 100644 --- a/drivers/scsi/ses.c +++ b/drivers/scsi/ses.c @@ -747,7 +747,7 @@ static int ses_intf_add(struct device *cdev, buf = NULL; } page2_not_supported: - scomp = kzalloc(sizeof(struct ses_component) * components, GFP_KERNEL); + scomp = kcalloc(components, sizeof(struct ses_component), GFP_KERNEL); if (!scomp) goto err_free; diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 573763908562..53ae52dbff84 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1045,7 +1045,7 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg) else { sg_req_info_t *rinfo; - rinfo = kzalloc(SZ_SG_REQ_INFO * SG_MAX_QUEUE, + rinfo = kcalloc(SG_MAX_QUEUE, SZ_SG_REQ_INFO, GFP_KERNEL); if (!rinfo) return -ENOMEM; diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 8332f958cc42..b78d20b74ed8 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -4252,8 +4252,9 @@ static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info) struct device *dev; struct pqi_io_request *io_request; - ctrl_info->io_request_pool = kzalloc(ctrl_info->max_io_slots * - sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL); + ctrl_info->io_request_pool = + kcalloc(ctrl_info->max_io_slots, + sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL); if (!ctrl_info->io_request_pool) { dev_err(&ctrl_info->pci_dev->dev, diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c index c16e4de3a03f..50c66ccc4b41 100644 --- a/drivers/scsi/st.c +++ b/drivers/scsi/st.c @@ -3888,7 +3888,7 @@ static struct st_buffer *new_tape_buffer(int need_dma, int max_sg) tb->dma = need_dma; tb->buffer_size = 0; - tb->reserved_pages = kzalloc(max_sg * sizeof(struct page *), + tb->reserved_pages = kcalloc(max_sg, sizeof(struct page *), GFP_KERNEL); if (!tb->reserved_pages) { kfree(tb); diff --git a/drivers/sh/clk/cpg.c b/drivers/sh/clk/cpg.c index 7442bc130055..eeb028b9cdb3 100644 --- a/drivers/sh/clk/cpg.c +++ b/drivers/sh/clk/cpg.c @@ -249,7 +249,7 @@ static int __init sh_clk_div_register_ops(struct clk *clks, int nr, int k; freq_table_size *= (nr_divs + 1); - freq_table = kzalloc(freq_table_size * nr, GFP_KERNEL); + freq_table = kcalloc(nr, freq_table_size, GFP_KERNEL); if (!freq_table) { pr_err("%s: unable to alloc memory\n", __func__); return -ENOMEM; diff --git a/drivers/sh/intc/core.c b/drivers/sh/intc/core.c index 8e72bcbd3d6d..46f0f322d4d8 100644 --- a/drivers/sh/intc/core.c +++ b/drivers/sh/intc/core.c @@ -203,7 +203,7 @@ int __init register_intc_controller(struct intc_desc *desc) if (desc->num_resources) { d->nr_windows = desc->num_resources; - d->window = kzalloc(d->nr_windows * sizeof(*d->window), + d->window = kcalloc(d->nr_windows, sizeof(*d->window), GFP_NOWAIT); if (!d->window) goto err1; @@ -230,12 +230,12 @@ int __init register_intc_controller(struct intc_desc *desc) d->nr_reg += hw->ack_regs ? hw->nr_ack_regs : 0; d->nr_reg += hw->subgroups ? hw->nr_subgroups : 0; - d->reg = kzalloc(d->nr_reg * sizeof(*d->reg), GFP_NOWAIT); + d->reg = kcalloc(d->nr_reg, sizeof(*d->reg), GFP_NOWAIT); if (!d->reg) goto err2; #ifdef CONFIG_SMP - d->smp = kzalloc(d->nr_reg * sizeof(*d->smp), GFP_NOWAIT); + d->smp = kcalloc(d->nr_reg, sizeof(*d->smp), GFP_NOWAIT); if (!d->smp) goto err3; #endif @@ -253,7 +253,7 @@ int __init register_intc_controller(struct intc_desc *desc) } if (hw->prio_regs) { - d->prio = kzalloc(hw->nr_vectors * sizeof(*d->prio), + d->prio = kcalloc(hw->nr_vectors, sizeof(*d->prio), GFP_NOWAIT); if (!d->prio) goto err4; @@ -269,7 +269,7 @@ int __init register_intc_controller(struct intc_desc *desc) } if (hw->sense_regs) { - d->sense = kzalloc(hw->nr_vectors * sizeof(*d->sense), + d->sense = kcalloc(hw->nr_vectors, sizeof(*d->sense), GFP_NOWAIT); if (!d->sense) goto err5; diff --git a/drivers/sh/maple/maple.c b/drivers/sh/maple/maple.c index 7525039d812c..2e45988d1259 100644 --- a/drivers/sh/maple/maple.c +++ b/drivers/sh/maple/maple.c @@ -161,7 +161,7 @@ int maple_add_packet(struct maple_device *mdev, u32 function, u32 command, void *sendbuf = NULL; if (length) { - sendbuf = kzalloc(length * 4, GFP_KERNEL); + sendbuf = kcalloc(length, 4, GFP_KERNEL); if (!sendbuf) { ret = -ENOMEM; goto out; diff --git a/drivers/slimbus/qcom-ctrl.c b/drivers/slimbus/qcom-ctrl.c index bb36a8fbc9b1..db1f5135846a 100644 --- a/drivers/slimbus/qcom-ctrl.c +++ b/drivers/slimbus/qcom-ctrl.c @@ -540,7 +540,7 @@ static int qcom_slim_probe(struct platform_device *pdev) ctrl->tx.sl_sz = SLIM_MSGQ_BUF_LEN; ctrl->rx.n = QCOM_RX_MSGS; ctrl->rx.sl_sz = SLIM_MSGQ_BUF_LEN; - ctrl->wr_comp = kzalloc(sizeof(struct completion *) * QCOM_TX_MSGS, + ctrl->wr_comp = kcalloc(QCOM_TX_MSGS, sizeof(struct completion *), GFP_KERNEL); if (!ctrl->wr_comp) return -ENOMEM; diff --git a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c index 2d9ab2620b82..04b1a0950387 100644 --- a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c +++ b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c @@ -143,7 +143,7 @@ static int rt2880_pinctrl_dt_node_to_map(struct pinctrl_dev *pctrldev, if (!max_maps) return max_maps; - *map = kzalloc(max_maps * sizeof(struct pinctrl_map), GFP_KERNEL); + *map = kcalloc(max_maps, sizeof(struct pinctrl_map), GFP_KERNEL); if (!*map) return -ENOMEM; diff --git a/drivers/staging/rtlwifi/efuse.c b/drivers/staging/rtlwifi/efuse.c index d7c7d146a84d..1dc71455f270 100644 --- a/drivers/staging/rtlwifi/efuse.c +++ b/drivers/staging/rtlwifi/efuse.c @@ -237,8 +237,8 @@ void read_efuse(struct ieee80211_hw *hw, u16 _offset, u16 _size_byte, u8 *pbuf) } /* allocate memory for efuse_tbl and efuse_word */ - efuse_tbl = kzalloc(rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE] * - sizeof(u8), GFP_ATOMIC); + efuse_tbl = kzalloc(rtlpriv->cfg->maps[EFUSE_HWSET_MAX_SIZE], + GFP_ATOMIC); if (!efuse_tbl) return; efuse_word = kcalloc(EFUSE_MAX_WORD_UNIT, sizeof(u16 *), GFP_ATOMIC); diff --git a/drivers/staging/unisys/visorhba/visorhba_main.c b/drivers/staging/unisys/visorhba/visorhba_main.c index 167e98f8688e..4fc521c51c0e 100644 --- a/drivers/staging/unisys/visorhba/visorhba_main.c +++ b/drivers/staging/unisys/visorhba/visorhba_main.c @@ -865,7 +865,7 @@ static void do_scsi_nolinuxstat(struct uiscmdrsp *cmdrsp, if (cmdrsp->scsi.no_disk_result == 0) return; - buf = kzalloc(sizeof(char) * 36, GFP_KERNEL); + buf = kzalloc(36, GFP_KERNEL); if (!buf) return; diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index f0e8f0f4ccb4..efe8214f2df3 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -250,7 +250,7 @@ int transport_alloc_session_tags(struct se_session *se_sess, { int rc; - se_sess->sess_cmd_map = kzalloc(tag_num * tag_size, + se_sess->sess_cmd_map = kcalloc(tag_size, tag_num, GFP_KERNEL | __GFP_NOWARN | __GFP_RETRY_MAYFAIL); if (!se_sess->sess_cmd_map) { se_sess->sess_cmd_map = vzalloc(tag_num * tag_size); diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 94b183efd236..7f96dfa32b9c 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -1717,8 +1717,9 @@ static int tcmu_configure_device(struct se_device *dev) info = &udev->uio_info; - udev->data_bitmap = kzalloc(BITS_TO_LONGS(udev->max_blocks) * - sizeof(unsigned long), GFP_KERNEL); + udev->data_bitmap = kcalloc(BITS_TO_LONGS(udev->max_blocks), + sizeof(unsigned long), + GFP_KERNEL); if (!udev->data_bitmap) { ret = -ENOMEM; goto err_bitmap_alloc; diff --git a/drivers/thermal/int340x_thermal/acpi_thermal_rel.c b/drivers/thermal/int340x_thermal/acpi_thermal_rel.c index c719167e9f28..45e7e5cbdffb 100644 --- a/drivers/thermal/int340x_thermal/acpi_thermal_rel.c +++ b/drivers/thermal/int340x_thermal/acpi_thermal_rel.c @@ -96,7 +96,7 @@ int acpi_parse_trt(acpi_handle handle, int *trt_count, struct trt **trtp, } *trt_count = p->package.count; - trts = kzalloc(*trt_count * sizeof(struct trt), GFP_KERNEL); + trts = kcalloc(*trt_count, sizeof(struct trt), GFP_KERNEL); if (!trts) { result = -ENOMEM; goto end; @@ -178,7 +178,7 @@ int acpi_parse_art(acpi_handle handle, int *art_count, struct art **artp, /* ignore p->package.elements[0], as this is _ART Revision field */ *art_count = p->package.count - 1; - arts = kzalloc(*art_count * sizeof(struct art), GFP_KERNEL); + arts = kcalloc(*art_count, sizeof(struct art), GFP_KERNEL); if (!arts) { result = -ENOMEM; goto end; diff --git a/drivers/thermal/int340x_thermal/int340x_thermal_zone.c b/drivers/thermal/int340x_thermal/int340x_thermal_zone.c index 145a5c53ff5c..953c83967ceb 100644 --- a/drivers/thermal/int340x_thermal/int340x_thermal_zone.c +++ b/drivers/thermal/int340x_thermal/int340x_thermal_zone.c @@ -239,9 +239,10 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev, if (ACPI_FAILURE(status)) trip_cnt = 0; else { - int34x_thermal_zone->aux_trips = kzalloc( - sizeof(*int34x_thermal_zone->aux_trips) * - trip_cnt, GFP_KERNEL); + int34x_thermal_zone->aux_trips = + kcalloc(trip_cnt, + sizeof(*int34x_thermal_zone->aux_trips), + GFP_KERNEL); if (!int34x_thermal_zone->aux_trips) { ret = -ENOMEM; goto err_trip_alloc; diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c index e09f0354a4bc..5798420ac29c 100644 --- a/drivers/thermal/of-thermal.c +++ b/drivers/thermal/of-thermal.c @@ -870,7 +870,7 @@ __init *thermal_of_build_thermal_zone(struct device_node *np) if (tz->ntrips == 0) /* must have at least one child */ goto finish; - tz->trips = kzalloc(tz->ntrips * sizeof(*tz->trips), GFP_KERNEL); + tz->trips = kcalloc(tz->ntrips, sizeof(*tz->trips), GFP_KERNEL); if (!tz->trips) { ret = -ENOMEM; goto free_tz; @@ -896,7 +896,7 @@ __init *thermal_of_build_thermal_zone(struct device_node *np) if (tz->num_tbps == 0) goto finish; - tz->tbps = kzalloc(tz->num_tbps * sizeof(*tz->tbps), GFP_KERNEL); + tz->tbps = kcalloc(tz->num_tbps, sizeof(*tz->tbps), GFP_KERNEL); if (!tz->tbps) { ret = -ENOMEM; goto free_trips; diff --git a/drivers/thermal/x86_pkg_temp_thermal.c b/drivers/thermal/x86_pkg_temp_thermal.c index 1a6c88b10a39..1ef937d799e4 100644 --- a/drivers/thermal/x86_pkg_temp_thermal.c +++ b/drivers/thermal/x86_pkg_temp_thermal.c @@ -516,7 +516,8 @@ static int __init pkg_temp_thermal_init(void) return -ENODEV; max_packages = topology_max_packages(); - packages = kzalloc(max_packages * sizeof(struct pkg_device *), GFP_KERNEL); + packages = kcalloc(max_packages, sizeof(struct pkg_device *), + GFP_KERNEL); if (!packages) return -ENOMEM; diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c index 47ac56817c43..eea4049b5dcc 100644 --- a/drivers/tty/ehv_bytechan.c +++ b/drivers/tty/ehv_bytechan.c @@ -754,7 +754,7 @@ static int __init ehv_bc_init(void) * array, then you can use pointer math (e.g. "bc - bcs") to get its * tty index. */ - bcs = kzalloc(count * sizeof(struct ehv_bc_data), GFP_KERNEL); + bcs = kcalloc(count, sizeof(struct ehv_bc_data), GFP_KERNEL); if (!bcs) return -ENOMEM; diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c index 1c1bd0afcd48..37caba7c3aff 100644 --- a/drivers/tty/goldfish.c +++ b/drivers/tty/goldfish.c @@ -245,8 +245,9 @@ static int goldfish_tty_create_driver(void) int ret; struct tty_driver *tty; - goldfish_ttys = kzalloc(sizeof(*goldfish_ttys) * - goldfish_tty_line_count, GFP_KERNEL); + goldfish_ttys = kcalloc(goldfish_tty_line_count, + sizeof(*goldfish_ttys), + GFP_KERNEL); if (goldfish_ttys == NULL) { ret = -ENOMEM; goto err_alloc_goldfish_ttys_failed; diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c index a74680729825..2af1e5751bd6 100644 --- a/drivers/tty/hvc/hvc_iucv.c +++ b/drivers/tty/hvc/hvc_iucv.c @@ -1252,7 +1252,7 @@ static int hvc_iucv_setup_filter(const char *val) if (size > MAX_VMID_FILTER) return -ENOSPC; - array = kzalloc(size * 8, GFP_KERNEL); + array = kcalloc(size, 8, GFP_KERNEL); if (!array) return -ENOMEM; diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 760d5dd0aada..cb85002a10d8 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -991,7 +991,7 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv) priv->tx_dma_use = 1; - priv->sg_tx_p = kzalloc(sizeof(struct scatterlist)*num, GFP_ATOMIC); + priv->sg_tx_p = kcalloc(num, sizeof(struct scatterlist), GFP_ATOMIC); if (!priv->sg_tx_p) { dev_err(priv->port.dev, "%s:kzalloc Failed\n", __func__); return 0; diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 890b8832aff2..9c14a453f73c 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -2445,7 +2445,7 @@ int uart_register_driver(struct uart_driver *drv) * Maybe we should be using a slab cache for this, especially if * we have a large number of ports to handle. */ - drv->state = kzalloc(sizeof(struct uart_state) * drv->nr, GFP_KERNEL); + drv->state = kcalloc(drv->nr, sizeof(struct uart_state), GFP_KERNEL); if (!drv->state) goto out; diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c index b93d0225f8c9..72131b5e132e 100644 --- a/drivers/tty/serial/sunsab.c +++ b/drivers/tty/serial/sunsab.c @@ -1125,8 +1125,9 @@ static int __init sunsab_init(void) } if (num_channels) { - sunsab_ports = kzalloc(sizeof(struct uart_sunsab_port) * - num_channels, GFP_KERNEL); + sunsab_ports = kcalloc(num_channels, + sizeof(struct uart_sunsab_port), + GFP_KERNEL); if (!sunsab_ports) return -ENOMEM; diff --git a/drivers/uio/uio_pruss.c b/drivers/uio/uio_pruss.c index 31d5b1d3b5af..91aea8823af5 100644 --- a/drivers/uio/uio_pruss.c +++ b/drivers/uio/uio_pruss.c @@ -129,7 +129,7 @@ static int pruss_probe(struct platform_device *pdev) if (!gdev) return -ENOMEM; - gdev->info = kzalloc(sizeof(*p) * MAX_PRUSS_EVT, GFP_KERNEL); + gdev->info = kcalloc(MAX_PRUSS_EVT, sizeof(*p), GFP_KERNEL); if (!gdev->info) { kfree(gdev); return -ENOMEM; diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 26c2438d2889..fcae521df29b 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1376,7 +1376,7 @@ static int hub_configure(struct usb_hub *hub, dev_info(hub_dev, "%d port%s detected\n", maxchild, (maxchild == 1) ? "" : "s"); - hub->ports = kzalloc(maxchild * sizeof(struct usb_port *), GFP_KERNEL); + hub->ports = kcalloc(maxchild, sizeof(struct usb_port *), GFP_KERNEL); if (!hub->ports) { ret = -ENOMEM; goto fail; diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 1faefea16cec..edaf0b6af4f0 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5079,13 +5079,14 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg) dev_dbg(hsotg->dev, "hcfg=%08x\n", hcfg); #ifdef CONFIG_USB_DWC2_TRACK_MISSED_SOFS - hsotg->frame_num_array = kzalloc(sizeof(*hsotg->frame_num_array) * - FRAME_NUM_ARRAY_SIZE, GFP_KERNEL); + hsotg->frame_num_array = kcalloc(FRAME_NUM_ARRAY_SIZE, + sizeof(*hsotg->frame_num_array), + GFP_KERNEL); if (!hsotg->frame_num_array) goto error1; - hsotg->last_frame_num_array = kzalloc( - sizeof(*hsotg->last_frame_num_array) * - FRAME_NUM_ARRAY_SIZE, GFP_KERNEL); + hsotg->last_frame_num_array = + kcalloc(FRAME_NUM_ARRAY_SIZE, + sizeof(*hsotg->last_frame_num_array), GFP_KERNEL); if (!hsotg->last_frame_num_array) goto error1; #endif diff --git a/drivers/usb/gadget/udc/bdc/bdc_ep.c b/drivers/usb/gadget/udc/bdc/bdc_ep.c index 03149b9d7ea7..a4d9b5e1e50e 100644 --- a/drivers/usb/gadget/udc/bdc/bdc_ep.c +++ b/drivers/usb/gadget/udc/bdc/bdc_ep.c @@ -138,9 +138,9 @@ static int ep_bd_list_alloc(struct bdc_ep *ep) __func__, ep, num_tabs); /* Allocate memory for table array */ - ep->bd_list.bd_table_array = kzalloc( - num_tabs * sizeof(struct bd_table *), - GFP_ATOMIC); + ep->bd_list.bd_table_array = kcalloc(num_tabs, + sizeof(struct bd_table *), + GFP_ATOMIC); if (!ep->bd_list.bd_table_array) return -ENOMEM; diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c index 9a3f7db26a5e..be59309e848c 100644 --- a/drivers/usb/gadget/udc/fsl_udc_core.c +++ b/drivers/usb/gadget/udc/fsl_udc_core.c @@ -2246,7 +2246,7 @@ static int struct_udc_setup(struct fsl_udc *udc, pdata = dev_get_platdata(&pdev->dev); udc->phy_mode = pdata->phy_mode; - udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL); + udc->eps = kcalloc(udc->max_ep, sizeof(struct fsl_ep), GFP_KERNEL); if (!udc->eps) return -1; diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index e56db44708bc..1d87295682b8 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -117,8 +117,9 @@ static struct ehci_tt *find_tt(struct usb_device *udev) if (utt->multi) { tt_index = utt->hcpriv; if (!tt_index) { /* Create the index array */ - tt_index = kzalloc(utt->hub->maxchild * - sizeof(*tt_index), GFP_ATOMIC); + tt_index = kcalloc(utt->hub->maxchild, + sizeof(*tt_index), + GFP_ATOMIC); if (!tt_index) return ERR_PTR(-ENOMEM); utt->hcpriv = tt_index; diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c index 3a8bbfe43a8e..6e3dad19d369 100644 --- a/drivers/usb/host/imx21-hcd.c +++ b/drivers/usb/host/imx21-hcd.c @@ -741,8 +741,8 @@ static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd, if (urb_priv == NULL) return -ENOMEM; - urb_priv->isoc_td = kzalloc( - sizeof(struct td) * urb->number_of_packets, mem_flags); + urb_priv->isoc_td = kcalloc(urb->number_of_packets, sizeof(struct td), + mem_flags); if (urb_priv->isoc_td == NULL) { ret = -ENOMEM; goto alloc_td_failed; diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index 34e866ad4a81..ad2c082bd0fb 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -1024,7 +1024,8 @@ static long mon_bin_ioctl(struct file *file, unsigned int cmd, unsigned long arg return -EINVAL; size = CHUNK_ALIGN(arg); - vec = kzalloc(sizeof(struct mon_pgmap) * (size / CHUNK_SIZE), GFP_KERNEL); + vec = kcalloc(size / CHUNK_SIZE, sizeof(struct mon_pgmap), + GFP_KERNEL); if (vec == NULL) { ret = -ENOMEM; break; diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 34ee9ebe12a3..33d059c40616 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -1068,7 +1068,7 @@ int usbhs_mod_gadget_probe(struct usbhs_priv *priv) if (!gpriv) return -ENOMEM; - uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL); + uep = kcalloc(pipe_size, sizeof(struct usbhsg_uep), GFP_KERNEL); if (!uep) { ret = -ENOMEM; goto usbhs_mod_gadget_probe_err_gpriv; diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c index 9677e0e31475..c4922b96c93b 100644 --- a/drivers/usb/renesas_usbhs/pipe.c +++ b/drivers/usb/renesas_usbhs/pipe.c @@ -803,7 +803,8 @@ int usbhs_pipe_probe(struct usbhs_priv *priv) return -EINVAL; } - info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL); + info->pipe = kcalloc(pipe_size, sizeof(struct usbhs_pipe), + GFP_KERNEL); if (!info->pipe) return -ENOMEM; diff --git a/drivers/usb/wusbcore/wa-rpipe.c b/drivers/usb/wusbcore/wa-rpipe.c index d0f1a6698460..38884aac862b 100644 --- a/drivers/usb/wusbcore/wa-rpipe.c +++ b/drivers/usb/wusbcore/wa-rpipe.c @@ -470,7 +470,8 @@ error: int wa_rpipes_create(struct wahc *wa) { wa->rpipes = le16_to_cpu(wa->wa_descr->wNumRPipes); - wa->rpipe_bm = kzalloc(BITS_TO_LONGS(wa->rpipes)*sizeof(unsigned long), + wa->rpipe_bm = kcalloc(BITS_TO_LONGS(wa->rpipes), + sizeof(unsigned long), GFP_KERNEL); if (wa->rpipe_bm == NULL) return -ENOMEM; diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index ce10eb75b042..17fcd3b2e686 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -1685,22 +1685,25 @@ static int vhost_scsi_nexus_cb(struct se_portal_group *se_tpg, for (i = 0; i < VHOST_SCSI_DEFAULT_TAGS; i++) { tv_cmd = &((struct vhost_scsi_cmd *)se_sess->sess_cmd_map)[i]; - tv_cmd->tvc_sgl = kzalloc(sizeof(struct scatterlist) * - VHOST_SCSI_PREALLOC_SGLS, GFP_KERNEL); + tv_cmd->tvc_sgl = kcalloc(VHOST_SCSI_PREALLOC_SGLS, + sizeof(struct scatterlist), + GFP_KERNEL); if (!tv_cmd->tvc_sgl) { pr_err("Unable to allocate tv_cmd->tvc_sgl\n"); goto out; } - tv_cmd->tvc_upages = kzalloc(sizeof(struct page *) * - VHOST_SCSI_PREALLOC_UPAGES, GFP_KERNEL); + tv_cmd->tvc_upages = kcalloc(VHOST_SCSI_PREALLOC_UPAGES, + sizeof(struct page *), + GFP_KERNEL); if (!tv_cmd->tvc_upages) { pr_err("Unable to allocate tv_cmd->tvc_upages\n"); goto out; } - tv_cmd->tvc_prot_sgl = kzalloc(sizeof(struct scatterlist) * - VHOST_SCSI_PREALLOC_PROT_SGLS, GFP_KERNEL); + tv_cmd->tvc_prot_sgl = kcalloc(VHOST_SCSI_PREALLOC_PROT_SGLS, + sizeof(struct scatterlist), + GFP_KERNEL); if (!tv_cmd->tvc_prot_sgl) { pr_err("Unable to allocate tv_cmd->tvc_prot_sgl\n"); goto out; diff --git a/drivers/video/console/sticore.c b/drivers/video/console/sticore.c index 08b822656846..ff45dca3ee46 100644 --- a/drivers/video/console/sticore.c +++ b/drivers/video/console/sticore.c @@ -649,7 +649,7 @@ static void *sti_bmode_font_raw(struct sti_cooked_font *f) unsigned char *n, *p, *q; int size = f->raw->bytes_per_char*256+sizeof(struct sti_rom_font); - n = kzalloc(4*size, STI_LOWMEM); + n = kcalloc(4, size, STI_LOWMEM); if (!n) return NULL; p = n + 3; diff --git a/drivers/video/fbdev/broadsheetfb.c b/drivers/video/fbdev/broadsheetfb.c index 9f9a7bef1ff6..d6ba348deb9f 100644 --- a/drivers/video/fbdev/broadsheetfb.c +++ b/drivers/video/fbdev/broadsheetfb.c @@ -617,7 +617,7 @@ static int broadsheet_spiflash_rewrite_sector(struct broadsheetfb_par *par, int tail_start_addr; int start_sector_addr; - sector_buffer = kzalloc(sizeof(char)*sector_size, GFP_KERNEL); + sector_buffer = kzalloc(sector_size, GFP_KERNEL); if (!sector_buffer) return -ENOMEM; diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c index 522cf441842c..852d86c1c527 100644 --- a/drivers/video/fbdev/core/fbmon.c +++ b/drivers/video/fbdev/core/fbmon.c @@ -620,7 +620,7 @@ static struct fb_videomode *fb_create_modedb(unsigned char *edid, int *dbsize, int num = 0, i, first = 1; int ver, rev; - mode = kzalloc(50 * sizeof(struct fb_videomode), GFP_KERNEL); + mode = kcalloc(50, sizeof(struct fb_videomode), GFP_KERNEL); if (mode == NULL) return NULL; @@ -1055,8 +1055,9 @@ void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs) if (!(num + svd_n)) return; - m = kzalloc((specs->modedb_len + num + svd_n) * - sizeof(struct fb_videomode), GFP_KERNEL); + m = kcalloc(specs->modedb_len + num + svd_n, + sizeof(struct fb_videomode), + GFP_KERNEL); if (!m) return; diff --git a/drivers/video/fbdev/mmp/fb/mmpfb.c b/drivers/video/fbdev/mmp/fb/mmpfb.c index 92279e02dd94..f27697e07c55 100644 --- a/drivers/video/fbdev/mmp/fb/mmpfb.c +++ b/drivers/video/fbdev/mmp/fb/mmpfb.c @@ -493,8 +493,8 @@ static int modes_setup(struct mmpfb_info *fbi) return 0; } /* put videomode list to info structure */ - videomodes = kzalloc(sizeof(struct fb_videomode) * videomode_num, - GFP_KERNEL); + videomodes = kcalloc(videomode_num, sizeof(struct fb_videomode), + GFP_KERNEL); if (!videomodes) { dev_err(fbi->dev, "can't malloc video modes\n"); return -ENOMEM; diff --git a/drivers/video/fbdev/omap2/omapfb/dss/manager.c b/drivers/video/fbdev/omap2/omapfb/dss/manager.c index 69f86d2cc274..d21c641e1f3c 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/manager.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/manager.c @@ -42,8 +42,8 @@ int dss_init_overlay_managers(void) num_managers = dss_feat_get_num_mgrs(); - managers = kzalloc(sizeof(struct omap_overlay_manager) * num_managers, - GFP_KERNEL); + managers = kcalloc(num_managers, sizeof(struct omap_overlay_manager), + GFP_KERNEL); BUG_ON(managers == NULL); diff --git a/drivers/video/fbdev/omap2/omapfb/dss/overlay.c b/drivers/video/fbdev/omap2/omapfb/dss/overlay.c index d6c5d75d2ef8..be17a4785a5e 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/overlay.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/overlay.c @@ -59,8 +59,8 @@ void dss_init_overlays(struct platform_device *pdev) num_overlays = dss_feat_get_num_ovls(); - overlays = kzalloc(sizeof(struct omap_overlay) * num_overlays, - GFP_KERNEL); + overlays = kcalloc(num_overlays, sizeof(struct omap_overlay), + GFP_KERNEL); BUG_ON(overlays == NULL); diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c index c592ca513115..440a6636d8f0 100644 --- a/drivers/video/fbdev/uvesafb.c +++ b/drivers/video/fbdev/uvesafb.c @@ -486,8 +486,9 @@ static int uvesafb_vbe_getmodes(struct uvesafb_ktask *task, mode++; } - par->vbe_modes = kzalloc(sizeof(struct vbe_mode_ib) * - par->vbe_modes_cnt, GFP_KERNEL); + par->vbe_modes = kcalloc(par->vbe_modes_cnt, + sizeof(struct vbe_mode_ib), + GFP_KERNEL); if (!par->vbe_modes) return -ENOMEM; @@ -858,7 +859,7 @@ static int uvesafb_vbe_init_mode(struct fb_info *info) * Convert the modelist into a modedb so that we can use it with * fb_find_mode(). */ - mode = kzalloc(i * sizeof(*mode), GFP_KERNEL); + mode = kcalloc(i, sizeof(*mode), GFP_KERNEL); if (mode) { i = 0; list_for_each(pos, &info->modelist) { diff --git a/drivers/video/of_display_timing.c b/drivers/video/of_display_timing.c index 83b8963c9657..5244e93ceafc 100644 --- a/drivers/video/of_display_timing.c +++ b/drivers/video/of_display_timing.c @@ -181,8 +181,9 @@ struct display_timings *of_get_display_timings(const struct device_node *np) goto entryfail; } - disp->timings = kzalloc(sizeof(struct display_timing *) * - disp->num_timings, GFP_KERNEL); + disp->timings = kcalloc(disp->num_timings, + sizeof(struct display_timing *), + GFP_KERNEL); if (!disp->timings) { pr_err("%pOF: could not allocate timings array\n", np); goto entryfail; diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c index 4e05d7f711fe..8ba726e600e9 100644 --- a/drivers/virt/fsl_hypervisor.c +++ b/drivers/virt/fsl_hypervisor.c @@ -223,7 +223,7 @@ static long ioctl_memcpy(struct fsl_hv_ioctl_memcpy __user *p) * 'pages' is an array of struct page pointers that's initialized by * get_user_pages(). */ - pages = kzalloc(num_pages * sizeof(struct page *), GFP_KERNEL); + pages = kcalloc(num_pages, sizeof(struct page *), GFP_KERNEL); if (!pages) { pr_debug("fsl-hv: could not allocate page list\n"); return -ENOMEM; diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index a491d0ed3f16..b563a4499cc8 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -119,7 +119,7 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors, if (!vp_dev->msix_names) goto error; vp_dev->msix_affinity_masks - = kzalloc(nvectors * sizeof *vp_dev->msix_affinity_masks, + = kcalloc(nvectors, sizeof(*vp_dev->msix_affinity_masks), GFP_KERNEL); if (!vp_dev->msix_affinity_masks) goto error; diff --git a/drivers/xen/arm-device.c b/drivers/xen/arm-device.c index 85dd20e05726..3e789c77f568 100644 --- a/drivers/xen/arm-device.c +++ b/drivers/xen/arm-device.c @@ -70,9 +70,9 @@ static int xen_map_device_mmio(const struct resource *resources, if ((resource_type(r) != IORESOURCE_MEM) || (nr == 0)) continue; - gpfns = kzalloc(sizeof(xen_pfn_t) * nr, GFP_KERNEL); - idxs = kzalloc(sizeof(xen_ulong_t) * nr, GFP_KERNEL); - errs = kzalloc(sizeof(int) * nr, GFP_KERNEL); + gpfns = kcalloc(nr, sizeof(xen_pfn_t), GFP_KERNEL); + idxs = kcalloc(nr, sizeof(xen_ulong_t), GFP_KERNEL); + errs = kcalloc(nr, sizeof(int), GFP_KERNEL); if (!gpfns || !idxs || !errs) { kfree(gpfns); kfree(idxs); diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c index dc062b195c46..a3fdb4fe967d 100644 --- a/fs/btrfs/check-integrity.c +++ b/fs/btrfs/check-integrity.c @@ -1603,8 +1603,8 @@ static int btrfsic_read_block(struct btrfsic_state *state, num_pages = (block_ctx->len + (u64)PAGE_SIZE - 1) >> PAGE_SHIFT; - block_ctx->mem_to_free = kzalloc((sizeof(*block_ctx->datav) + - sizeof(*block_ctx->pagev)) * + block_ctx->mem_to_free = kcalloc(sizeof(*block_ctx->datav) + + sizeof(*block_ctx->pagev), num_pages, GFP_NOFS); if (!block_ctx->mem_to_free) return -ENOMEM; diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 5aca336642c0..42329b25877d 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -2077,7 +2077,7 @@ struct cifs_writedata * cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete) { struct page **pages = - kzalloc(sizeof(struct page *) * nr_pages, GFP_NOFS); + kcalloc(nr_pages, sizeof(struct page *), GFP_NOFS); if (pages) return cifs_writedata_direct_alloc(pages, complete); diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 87eece6fbd48..8d41ca7bfcf1 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2900,7 +2900,7 @@ static struct cifs_readdata * cifs_readdata_alloc(unsigned int nr_pages, work_func_t complete) { struct page **pages = - kzalloc(sizeof(struct page *) * nr_pages, GFP_KERNEL); + kcalloc(nr_pages, sizeof(struct page *), GFP_KERNEL); struct cifs_readdata *ret = NULL; if (pages) { diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index c969275ce3ee..0057fe3f248d 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -577,7 +577,7 @@ int ext4_ext_precache(struct inode *inode) down_read(&ei->i_data_sem); depth = ext_depth(inode); - path = kzalloc(sizeof(struct ext4_ext_path) * (depth + 1), + path = kcalloc(depth + 1, sizeof(struct ext4_ext_path), GFP_NOFS); if (path == NULL) { up_read(&ei->i_data_sem); @@ -879,7 +879,7 @@ ext4_find_extent(struct inode *inode, ext4_lblk_t block, } if (!path) { /* account possible depth increase */ - path = kzalloc(sizeof(struct ext4_ext_path) * (depth + 2), + path = kcalloc(depth + 2, sizeof(struct ext4_ext_path), GFP_NOFS); if (unlikely(!path)) return ERR_PTR(-ENOMEM); @@ -1063,7 +1063,7 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode, * We need this to handle errors and free blocks * upon them. */ - ablocks = kzalloc(sizeof(ext4_fsblk_t) * depth, GFP_NOFS); + ablocks = kcalloc(depth, sizeof(ext4_fsblk_t), GFP_NOFS); if (!ablocks) return -ENOMEM; @@ -2921,7 +2921,7 @@ again: path[k].p_block = le16_to_cpu(path[k].p_hdr->eh_entries)+1; } else { - path = kzalloc(sizeof(struct ext4_ext_path) * (depth + 1), + path = kcalloc(depth + 1, sizeof(struct ext4_ext_path), GFP_NOFS); if (path == NULL) { ext4_journal_stop(handle); diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index c75ad982bcfc..956f27826026 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -461,7 +461,7 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, fh_count = be32_to_cpup(p); fls->mirror_array[i]->fh_versions = - kzalloc(fh_count * sizeof(struct nfs_fh), + kcalloc(fh_count, sizeof(struct nfs_fh), gfp_flags); if (fls->mirror_array[i]->fh_versions == NULL) { rc = -ENOMEM; diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c index d62279d3fc5d..59aa04976331 100644 --- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c +++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c @@ -99,7 +99,8 @@ nfs4_ff_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, version_count = be32_to_cpup(p); dprintk("%s: version count %d\n", __func__, version_count); - ds_versions = kzalloc(version_count * sizeof(struct nfs4_ff_ds_version), + ds_versions = kcalloc(version_count, + sizeof(struct nfs4_ff_ds_version), gfp_flags); if (!ds_versions) goto out_scratch; diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c index 8ceb25a10ea0..a1143f7c2201 100644 --- a/fs/nfsd/export.c +++ b/fs/nfsd/export.c @@ -404,8 +404,9 @@ fsloc_parse(char **mesg, char *buf, struct nfsd4_fs_locations *fsloc) if (fsloc->locations_count == 0) return 0; - fsloc->locations = kzalloc(fsloc->locations_count - * sizeof(struct nfsd4_fs_location), GFP_KERNEL); + fsloc->locations = kcalloc(fsloc->locations_count, + sizeof(struct nfsd4_fs_location), + GFP_KERNEL); if (!fsloc->locations) return -ENOMEM; for (i=0; i < fsloc->locations_count; i++) { diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index e5dcea6cee5f..bd3475694e83 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -1383,7 +1383,7 @@ static int __ocfs2_recovery_thread(void *arg) goto bail; } - rm_quota = kzalloc(osb->max_slots * sizeof(int), GFP_NOFS); + rm_quota = kcalloc(osb->max_slots, sizeof(int), GFP_NOFS); if (!rm_quota) { status = -ENOMEM; goto bail; diff --git a/fs/ocfs2/sysfile.c b/fs/ocfs2/sysfile.c index af155c183123..5965f3878d49 100644 --- a/fs/ocfs2/sysfile.c +++ b/fs/ocfs2/sysfile.c @@ -69,10 +69,11 @@ static struct inode **get_local_system_inode(struct ocfs2_super *osb, spin_unlock(&osb->osb_lock); if (unlikely(!local_system_inodes)) { - local_system_inodes = kzalloc(sizeof(struct inode *) * - NUM_LOCAL_SYSTEM_INODES * - osb->max_slots, - GFP_NOFS); + local_system_inodes = + kzalloc(array3_size(sizeof(struct inode *), + NUM_LOCAL_SYSTEM_INODES, + osb->max_slots), + GFP_NOFS); if (!local_system_inodes) { mlog_errno(-ENOMEM); /* diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c index 08801b45df00..c993dd8db739 100644 --- a/fs/overlayfs/namei.c +++ b/fs/overlayfs/namei.c @@ -612,7 +612,7 @@ static int ovl_get_index_name_fh(struct ovl_fh *fh, struct qstr *name) { char *n, *s; - n = kzalloc(fh->len * 2, GFP_KERNEL); + n = kcalloc(fh->len, 2, GFP_KERNEL); if (!n) return -ENOMEM; diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 4d765e5e91ed..89921a0d2ebb 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -1426,7 +1426,7 @@ static int register_leaf_sysctl_tables(const char *path, char *pos, /* If there are mixed files and directories we need a new table */ if (nr_dirs && nr_files) { struct ctl_table *new; - files = kzalloc(sizeof(struct ctl_table) * (nr_files + 1), + files = kcalloc(nr_files + 1, sizeof(struct ctl_table), GFP_KERNEL); if (!files) goto out; diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index b13fc024d2ee..132ec4406ed0 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -1044,7 +1044,8 @@ research: if (blocks_needed == 1) { un = &unf_single; } else { - un = kzalloc(min(blocks_needed, max_to_insert) * UNFM_P_SIZE, GFP_NOFS); + un = kcalloc(min(blocks_needed, max_to_insert), + UNFM_P_SIZE, GFP_NOFS); if (!un) { un = &unf_single; blocks_needed = 1; diff --git a/fs/udf/super.c b/fs/udf/super.c index 0d27d41f5c6e..fc77ea736da7 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -1585,7 +1585,7 @@ static struct udf_vds_record *handle_partition_descriptor( struct udf_vds_record *new_loc; unsigned int new_size = ALIGN(partnum, PART_DESC_ALLOC_STEP); - new_loc = kzalloc(sizeof(*new_loc) * new_size, GFP_KERNEL); + new_loc = kcalloc(new_size, sizeof(*new_loc), GFP_KERNEL); if (!new_loc) return ERR_PTR(-ENOMEM); memcpy(new_loc, data->part_descs_loc, @@ -1644,8 +1644,9 @@ static noinline int udf_process_sequence( memset(data.vds, 0, sizeof(struct udf_vds_record) * VDS_POS_LENGTH); data.size_part_descs = PART_DESC_ALLOC_STEP; - data.part_descs_loc = kzalloc(sizeof(*data.part_descs_loc) * - data.size_part_descs, GFP_KERNEL); + data.part_descs_loc = kcalloc(data.size_part_descs, + sizeof(*data.part_descs_loc), + GFP_KERNEL); if (!data.part_descs_loc) return -ENOMEM; diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index cced0c1e63e2..1494e087890e 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -5447,7 +5447,7 @@ static int jit_subprogs(struct bpf_verifier_env *env) insn->imm = 1; } - func = kzalloc(sizeof(prog) * env->subprog_cnt, GFP_KERNEL); + func = kcalloc(env->subprog_cnt, sizeof(prog), GFP_KERNEL); if (!func) return -ENOMEM; diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c index aaa69531fae2..2ddfce8f1e8f 100644 --- a/kernel/debug/kdb/kdb_main.c +++ b/kernel/debug/kdb/kdb_main.c @@ -691,7 +691,7 @@ static int kdb_defcmd2(const char *cmdstr, const char *argv0) } if (!s->usable) return KDB_NOTIMP; - s->command = kzalloc((s->count + 1) * sizeof(*(s->command)), GFP_KDB); + s->command = kcalloc(s->count + 1, sizeof(*(s->command)), GFP_KDB); if (!s->command) { kdb_printf("Could not allocate new kdb_defcmd table for %s\n", cmdstr); diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 1725b902983f..ccc579a7d32e 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -1184,7 +1184,8 @@ static struct xol_area *__create_xol_area(unsigned long vaddr) if (unlikely(!area)) goto out; - area->bitmap = kzalloc(BITS_TO_LONGS(UINSNS_PER_PAGE) * sizeof(long), GFP_KERNEL); + area->bitmap = kcalloc(BITS_TO_LONGS(UINSNS_PER_PAGE), sizeof(long), + GFP_KERNEL); if (!area->bitmap) goto free_area; diff --git a/kernel/locking/locktorture.c b/kernel/locking/locktorture.c index 4ceeb13a74ed..8402b3349dca 100644 --- a/kernel/locking/locktorture.c +++ b/kernel/locking/locktorture.c @@ -989,7 +989,8 @@ static int __init lock_torture_init(void) } if (nwriters_stress) { - writer_tasks = kzalloc(cxt.nrealwriters_stress * sizeof(writer_tasks[0]), + writer_tasks = kcalloc(cxt.nrealwriters_stress, + sizeof(writer_tasks[0]), GFP_KERNEL); if (writer_tasks == NULL) { VERBOSE_TOROUT_ERRSTRING("writer_tasks: Out of memory"); @@ -999,7 +1000,8 @@ static int __init lock_torture_init(void) } if (cxt.cur_ops->readlock) { - reader_tasks = kzalloc(cxt.nrealreaders_stress * sizeof(reader_tasks[0]), + reader_tasks = kcalloc(cxt.nrealreaders_stress, + sizeof(reader_tasks[0]), GFP_KERNEL); if (reader_tasks == NULL) { VERBOSE_TOROUT_ERRSTRING("reader_tasks: Out of memory"); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index e497c05aab7f..1866e64792a7 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -10215,10 +10215,10 @@ int alloc_fair_sched_group(struct task_group *tg, struct task_group *parent) struct cfs_rq *cfs_rq; int i; - tg->cfs_rq = kzalloc(sizeof(cfs_rq) * nr_cpu_ids, GFP_KERNEL); + tg->cfs_rq = kcalloc(nr_cpu_ids, sizeof(cfs_rq), GFP_KERNEL); if (!tg->cfs_rq) goto err; - tg->se = kzalloc(sizeof(se) * nr_cpu_ids, GFP_KERNEL); + tg->se = kcalloc(nr_cpu_ids, sizeof(se), GFP_KERNEL); if (!tg->se) goto err; diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index ef3c4e6f5345..47556b0c9a95 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -183,10 +183,10 @@ int alloc_rt_sched_group(struct task_group *tg, struct task_group *parent) struct sched_rt_entity *rt_se; int i; - tg->rt_rq = kzalloc(sizeof(rt_rq) * nr_cpu_ids, GFP_KERNEL); + tg->rt_rq = kcalloc(nr_cpu_ids, sizeof(rt_rq), GFP_KERNEL); if (!tg->rt_rq) goto err; - tg->rt_se = kzalloc(sizeof(rt_se) * nr_cpu_ids, GFP_KERNEL); + tg->rt_se = kcalloc(nr_cpu_ids, sizeof(rt_se), GFP_KERNEL); if (!tg->rt_se) goto err; diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 6a78cf70761d..2d9837c0aff4 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -3047,7 +3047,8 @@ int proc_do_large_bitmap(struct ctl_table *table, int write, if (IS_ERR(kbuf)) return PTR_ERR(kbuf); - tmp_bitmap = kzalloc(BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long), + tmp_bitmap = kcalloc(BITS_TO_LONGS(bitmap_len), + sizeof(unsigned long), GFP_KERNEL); if (!tmp_bitmap) { kfree(kbuf); diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index df4b6254f986..efed9c1cfb7e 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -728,7 +728,7 @@ static int ftrace_profile_init_cpu(int cpu) */ size = FTRACE_PROFILE_HASH_SIZE; - stat->hash = kzalloc(sizeof(struct hlist_head) * size, GFP_KERNEL); + stat->hash = kcalloc(size, sizeof(struct hlist_head), GFP_KERNEL); if (!stat->hash) return -ENOMEM; diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8ea855015613..c9336e98ac59 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4361,7 +4361,8 @@ int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled) if (mask == TRACE_ITER_RECORD_TGID) { if (!tgid_map) - tgid_map = kzalloc((PID_MAX_DEFAULT + 1) * sizeof(*tgid_map), + tgid_map = kcalloc(PID_MAX_DEFAULT + 1, + sizeof(*tgid_map), GFP_KERNEL); if (!tgid_map) { tr->trace_flags &= ~TRACE_ITER_RECORD_TGID; diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 465a28b4cd32..78b192071ef7 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -5638,7 +5638,7 @@ static void __init wq_numa_init(void) * available. Build one from cpu_to_node() which should have been * fully initialized by now. */ - tbl = kzalloc(nr_node_ids * sizeof(tbl[0]), GFP_KERNEL); + tbl = kcalloc(nr_node_ids, sizeof(tbl[0]), GFP_KERNEL); BUG_ON(!tbl); for_each_node(node) diff --git a/lib/lru_cache.c b/lib/lru_cache.c index 28ba40b99337..2b10a4024c35 100644 --- a/lib/lru_cache.c +++ b/lib/lru_cache.c @@ -119,7 +119,7 @@ struct lru_cache *lc_create(const char *name, struct kmem_cache *cache, slot = kcalloc(e_count, sizeof(struct hlist_head), GFP_KERNEL); if (!slot) goto out_fail; - element = kzalloc(e_count * sizeof(struct lc_element *), GFP_KERNEL); + element = kcalloc(e_count, sizeof(struct lc_element *), GFP_KERNEL); if (!element) goto out_fail; diff --git a/lib/mpi/mpiutil.c b/lib/mpi/mpiutil.c index 2dbfc4c8a237..20ed0f766787 100644 --- a/lib/mpi/mpiutil.c +++ b/lib/mpi/mpiutil.c @@ -98,7 +98,7 @@ int mpi_resize(MPI a, unsigned nlimbs) kzfree(a->d); a->d = p; } else { - a->d = kzalloc(nlimbs * sizeof(mpi_limb_t), GFP_KERNEL); + a->d = kcalloc(nlimbs, sizeof(mpi_limb_t), GFP_KERNEL); if (!a->d) return -ENOMEM; } diff --git a/mm/slab.c b/mm/slab.c index 36688f6c87eb..aa76a70e087e 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -4338,7 +4338,8 @@ static int leaks_show(struct seq_file *m, void *p) if (x[0] == x[1]) { /* Increase the buffer size */ mutex_unlock(&slab_mutex); - m->private = kzalloc(x[0] * 4 * sizeof(unsigned long), GFP_KERNEL); + m->private = kcalloc(x[0] * 4, sizeof(unsigned long), + GFP_KERNEL); if (!m->private) { /* Too bad, we are really out */ m->private = x; diff --git a/mm/slub.c b/mm/slub.c index faf5dcb7b44f..a3b8467c14af 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3623,8 +3623,9 @@ static void list_slab_objects(struct kmem_cache *s, struct page *page, #ifdef CONFIG_SLUB_DEBUG void *addr = page_address(page); void *p; - unsigned long *map = kzalloc(BITS_TO_LONGS(page->objects) * - sizeof(long), GFP_ATOMIC); + unsigned long *map = kcalloc(BITS_TO_LONGS(page->objects), + sizeof(long), + GFP_ATOMIC); if (!map) return; slab_err(s, page, text, s->name); @@ -4752,7 +4753,7 @@ static ssize_t show_slab_objects(struct kmem_cache *s, int x; unsigned long *nodes; - nodes = kzalloc(sizeof(unsigned long) * nr_node_ids, GFP_KERNEL); + nodes = kcalloc(nr_node_ids, sizeof(unsigned long), GFP_KERNEL); if (!nodes) return -ENOMEM; diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index cb4729539b82..920665dd92db 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -333,7 +333,7 @@ static int br_mdb_rehash(struct net_bridge_mdb_htable __rcu **mdbp, int max, mdb->max = max; mdb->old = old; - mdb->mhash = kzalloc(max * sizeof(*mdb->mhash), GFP_ATOMIC); + mdb->mhash = kcalloc(max, sizeof(*mdb->mhash), GFP_ATOMIC); if (!mdb->mhash) { kfree(mdb); return -ENOMEM; diff --git a/net/can/bcm.c b/net/can/bcm.c index 394ff1d2791f..9393f25df08d 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -1105,7 +1105,8 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg, } /* create and init array for received CAN frames */ - op->last_frames = kzalloc(msg_head->nframes * op->cfsiz, + op->last_frames = kcalloc(msg_head->nframes, + op->cfsiz, GFP_KERNEL); if (!op->last_frames) { kfree(op->frames); diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 436e4f9cc7f0..8be6be2d9c7b 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -911,7 +911,7 @@ static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, memset(&info, 0, sizeof(info)); info.cmd = ETHTOOL_GSSET_INFO; - info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER); + info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); if (!info_buf) return -ENOMEM; @@ -1017,7 +1017,7 @@ static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, if (info.cmd == ETHTOOL_GRXCLSRLALL) { if (info.rule_cnt > 0) { if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) - rule_buf = kzalloc(info.rule_cnt * sizeof(u32), + rule_buf = kcalloc(info.rule_cnt, sizeof(u32), GFP_USER); if (!rule_buf) return -ENOMEM; diff --git a/net/ieee802154/nl-phy.c b/net/ieee802154/nl-phy.c index dc2960be51e0..b231e40f006a 100644 --- a/net/ieee802154/nl-phy.c +++ b/net/ieee802154/nl-phy.c @@ -38,7 +38,7 @@ static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid, { void *hdr; int i, pages = 0; - uint32_t *buf = kzalloc(32 * sizeof(uint32_t), GFP_KERNEL); + uint32_t *buf = kcalloc(32, sizeof(uint32_t), GFP_KERNEL); pr_debug("%s\n", __func__); diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 63aa39b3af03..b21833651394 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -567,7 +567,7 @@ static int rtentry_to_fib_config(struct net *net, int cmd, struct rtentry *rt, struct nlattr *mx; int len = 0; - mx = kzalloc(3 * nla_total_size(4), GFP_KERNEL); + mx = kcalloc(3, nla_total_size(4), GFP_KERNEL); if (!mx) return -ENOMEM; diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 6bcd1eacc1f0..1df6e97106d7 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -649,7 +649,7 @@ static void update_or_create_fnhe(struct fib_nh *nh, __be32 daddr, __be32 gw, hash = rcu_dereference(nh->nh_exceptions); if (!hash) { - hash = kzalloc(FNHE_HASH_SIZE * sizeof(*hash), GFP_ATOMIC); + hash = kcalloc(FNHE_HASH_SIZE, sizeof(*hash), GFP_ATOMIC); if (!hash) goto out_unlock; rcu_assign_pointer(nh->nh_exceptions, hash); diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index d8c4b6374377..be491bf6ab6e 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -956,7 +956,7 @@ static int __net_init icmpv6_sk_init(struct net *net) int err, i, j; net->ipv6.icmp_sk = - kzalloc(nr_cpu_ids * sizeof(struct sock *), GFP_KERNEL); + kcalloc(nr_cpu_ids, sizeof(struct sock *), GFP_KERNEL); if (!net->ipv6.icmp_sk) return -ENOMEM; diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 89178b46b32f..d9558ffb8acf 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -1186,7 +1186,7 @@ static int ieee80211_chsw_switch_vifs(struct ieee80211_local *local, lockdep_assert_held(&local->mtx); lockdep_assert_held(&local->chanctx_mtx); - vif_chsw = kzalloc(sizeof(vif_chsw[0]) * n_vifs, GFP_KERNEL); + vif_chsw = kcalloc(n_vifs, sizeof(vif_chsw[0]), GFP_KERNEL); if (!vif_chsw) return -ENOMEM; diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c index 7fadfbca9f1b..76048b53c5b2 100644 --- a/net/mac80211/rc80211_minstrel.c +++ b/net/mac80211/rc80211_minstrel.c @@ -592,7 +592,7 @@ minstrel_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp) max_rates = sband->n_bitrates; } - mi->r = kzalloc(sizeof(struct minstrel_rate) * max_rates, gfp); + mi->r = kcalloc(max_rates, sizeof(struct minstrel_rate), gfp); if (!mi->r) goto error; diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c index 267ab9d5137e..67ebdeaffbbc 100644 --- a/net/mac80211/rc80211_minstrel_ht.c +++ b/net/mac80211/rc80211_minstrel_ht.c @@ -1313,7 +1313,7 @@ minstrel_ht_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp) if (!msp) return NULL; - msp->ratelist = kzalloc(sizeof(struct minstrel_rate) * max_rates, gfp); + msp->ratelist = kcalloc(max_rates, sizeof(struct minstrel_rate), gfp); if (!msp->ratelist) goto error; diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index a3b1bcc2b461..2e917a6d239d 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -1157,7 +1157,7 @@ int __ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata, } } - ie = kzalloc(num_bands * iebufsz, GFP_KERNEL); + ie = kcalloc(iebufsz, num_bands, GFP_KERNEL); if (!ie) { ret = -ENOMEM; goto out; diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 2d82c88efd0b..5e2e511c4a6f 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1803,8 +1803,9 @@ static int ieee80211_reconfig_nan(struct ieee80211_sub_if_data *sdata) if (WARN_ON(res)) return res; - funcs = kzalloc((sdata->local->hw.max_nan_de_entries + 1) * - sizeof(*funcs), GFP_KERNEL); + funcs = kcalloc(sdata->local->hw.max_nan_de_entries + 1, + sizeof(*funcs), + GFP_KERNEL); if (!funcs) return -ENOMEM; diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index cae4a026859d..f0411fbffe77 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -5303,7 +5303,7 @@ static int nf_tables_flowtable_parse_hook(const struct nft_ctx *ctx, if (err < 0) return err; - ops = kzalloc(sizeof(struct nf_hook_ops) * n, GFP_KERNEL); + ops = kcalloc(n, sizeof(struct nf_hook_ops), GFP_KERNEL); if (!ops) return -ENOMEM; diff --git a/net/netfilter/nfnetlink_cthelper.c b/net/netfilter/nfnetlink_cthelper.c index cb5b5f207777..e5d27b2e4eba 100644 --- a/net/netfilter/nfnetlink_cthelper.c +++ b/net/netfilter/nfnetlink_cthelper.c @@ -190,8 +190,9 @@ nfnl_cthelper_parse_expect_policy(struct nf_conntrack_helper *helper, if (class_max > NF_CT_MAX_EXPECT_CLASSES) return -EOVERFLOW; - expect_policy = kzalloc(sizeof(struct nf_conntrack_expect_policy) * - class_max, GFP_KERNEL); + expect_policy = kcalloc(class_max, + sizeof(struct nf_conntrack_expect_policy), + GFP_KERNEL); if (expect_policy == NULL) return -ENOMEM; diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index b97eb766a1d5..93fbcafbf388 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -1395,7 +1395,7 @@ static int __init nr_proto_init(void) return -1; } - dev_nr = kzalloc(nr_ndevs * sizeof(struct net_device *), GFP_KERNEL); + dev_nr = kcalloc(nr_ndevs, sizeof(struct net_device *), GFP_KERNEL); if (dev_nr == NULL) { printk(KERN_ERR "NET/ROM: nr_proto_init - unable to allocate device array\n"); return -1; diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c index f81c1d0ddff4..19f6765566e7 100644 --- a/net/openvswitch/vport.c +++ b/net/openvswitch/vport.c @@ -47,7 +47,7 @@ static struct hlist_head *dev_table; */ int ovs_vport_init(void) { - dev_table = kzalloc(VPORT_HASH_BUCKETS * sizeof(struct hlist_head), + dev_table = kcalloc(VPORT_HASH_BUCKETS, sizeof(struct hlist_head), GFP_KERNEL); if (!dev_table) return -ENOMEM; diff --git a/net/rds/ib.c b/net/rds/ib.c index 02deee29e7f1..b6ad38e48f62 100644 --- a/net/rds/ib.c +++ b/net/rds/ib.c @@ -163,7 +163,8 @@ static void rds_ib_add_one(struct ib_device *device) rds_ibdev->max_initiator_depth = device->attrs.max_qp_init_rd_atom; rds_ibdev->max_responder_resources = device->attrs.max_qp_rd_atom; - rds_ibdev->vector_load = kzalloc(sizeof(int) * device->num_comp_vectors, + rds_ibdev->vector_load = kcalloc(device->num_comp_vectors, + sizeof(int), GFP_KERNEL); if (!rds_ibdev->vector_load) { pr_err("RDS/IB: %s failed to allocate vector memory\n", diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c index 5b73fea849df..ebe42e7eb456 100644 --- a/net/rose/af_rose.c +++ b/net/rose/af_rose.c @@ -1514,7 +1514,8 @@ static int __init rose_proto_init(void) rose_callsign = null_ax25_address; - dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL); + dev_rose = kcalloc(rose_ndevs, sizeof(struct net_device *), + GFP_KERNEL); if (dev_rose == NULL) { printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n"); rc = -ENOMEM; diff --git a/net/sctp/auth.c b/net/sctp/auth.c index e64630cd3331..5b537613946f 100644 --- a/net/sctp/auth.c +++ b/net/sctp/auth.c @@ -482,8 +482,9 @@ int sctp_auth_init_hmacs(struct sctp_endpoint *ep, gfp_t gfp) return 0; /* Allocated the array of pointers to transorms */ - ep->auth_hmacs = kzalloc(sizeof(struct crypto_shash *) * - SCTP_AUTH_NUM_HMACS, gfp); + ep->auth_hmacs = kcalloc(SCTP_AUTH_NUM_HMACS, + sizeof(struct crypto_shash *), + gfp); if (!ep->auth_hmacs) return -ENOMEM; diff --git a/net/smc/smc_wr.c b/net/smc/smc_wr.c index cc7c1bb60fe8..dbd2605d1962 100644 --- a/net/smc/smc_wr.c +++ b/net/smc/smc_wr.c @@ -584,9 +584,9 @@ int smc_wr_alloc_link_mem(struct smc_link *link) GFP_KERNEL); if (!link->wr_rx_sges) goto no_mem_wr_tx_sges; - link->wr_tx_mask = kzalloc( - BITS_TO_LONGS(SMC_WR_BUF_CNT) * sizeof(*link->wr_tx_mask), - GFP_KERNEL); + link->wr_tx_mask = kcalloc(BITS_TO_LONGS(SMC_WR_BUF_CNT), + sizeof(*link->wr_tx_mask), + GFP_KERNEL); if (!link->wr_tx_mask) goto no_mem_wr_rx_sges; link->wr_tx_pends = kcalloc(SMC_WR_BUF_CNT, diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.c b/net/sunrpc/auth_gss/gss_rpc_upcall.c index 46b295e4f2b8..d58bd058b09b 100644 --- a/net/sunrpc/auth_gss/gss_rpc_upcall.c +++ b/net/sunrpc/auth_gss/gss_rpc_upcall.c @@ -224,7 +224,7 @@ static void gssp_free_receive_pages(struct gssx_arg_accept_sec_context *arg) static int gssp_alloc_receive_pages(struct gssx_arg_accept_sec_context *arg) { arg->npages = DIV_ROUND_UP(NGROUPS_MAX * 4, PAGE_SIZE); - arg->pages = kzalloc(arg->npages * sizeof(struct page *), GFP_KERNEL); + arg->pages = kcalloc(arg->npages, sizeof(struct page *), GFP_KERNEL); /* * XXX: actual pages are allocated by xdr layer in * xdr_partial_copy_from_skb. diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c index cdda4744c9b1..109fbe591e7b 100644 --- a/net/sunrpc/cache.c +++ b/net/sunrpc/cache.c @@ -1683,7 +1683,7 @@ struct cache_detail *cache_create_net(const struct cache_detail *tmpl, struct ne if (cd == NULL) return ERR_PTR(-ENOMEM); - cd->hash_table = kzalloc(cd->hash_size * sizeof(struct hlist_head), + cd->hash_table = kcalloc(cd->hash_size, sizeof(struct hlist_head), GFP_KERNEL); if (cd->hash_table == NULL) { kfree(cd); diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 07514ca011b2..c7bbe5f0aae8 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -10833,7 +10833,7 @@ static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, struct nlattr **tb; int err; - tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); + tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL); if (!tb) return -ENOMEM; @@ -11793,7 +11793,7 @@ static int nl80211_nan_add_func(struct sk_buff *skb, func->srf_num_macs = n_entries; func->srf_macs = - kzalloc(sizeof(*func->srf_macs) * n_entries, + kcalloc(n_entries, sizeof(*func->srf_macs), GFP_KERNEL); if (!func->srf_macs) { err = -ENOMEM; diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c index b9e6b2cafa69..0e566a01d217 100644 --- a/security/apparmor/policy_unpack.c +++ b/security/apparmor/policy_unpack.c @@ -475,7 +475,7 @@ static bool unpack_trans_table(struct aa_ext *e, struct aa_profile *profile) /* currently 4 exec bits and entries 0-3 are reserved iupcx */ if (size > 16 - 4) goto fail; - profile->file.trans.table = kzalloc(sizeof(char *) * size, + profile->file.trans.table = kcalloc(size, sizeof(char *), GFP_KERNEL); if (!profile->file.trans.table) goto fail; diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c index a2d44824121c..dd2ceec06fef 100644 --- a/security/selinux/ss/services.c +++ b/security/selinux/ss/services.c @@ -2118,7 +2118,7 @@ int security_load_policy(struct selinux_state *state, void *data, size_t len) int rc = 0; struct policy_file file = { data, len }, *fp = &file; - oldpolicydb = kzalloc(2 * sizeof(*oldpolicydb), GFP_KERNEL); + oldpolicydb = kcalloc(2, sizeof(*oldpolicydb), GFP_KERNEL); if (!oldpolicydb) { rc = -ENOMEM; goto out; diff --git a/sound/firewire/fireface/ff-protocol-ff400.c b/sound/firewire/fireface/ff-protocol-ff400.c index 12aa15df435d..ad7a0a32557d 100644 --- a/sound/firewire/fireface/ff-protocol-ff400.c +++ b/sound/firewire/fireface/ff-protocol-ff400.c @@ -147,7 +147,7 @@ static int ff400_switch_fetching_mode(struct snd_ff *ff, bool enable) __le32 *reg; int i; - reg = kzalloc(sizeof(__le32) * 18, GFP_KERNEL); + reg = kcalloc(18, sizeof(__le32), GFP_KERNEL); if (reg == NULL) return -ENOMEM; diff --git a/sound/pci/ctxfi/ctatc.c b/sound/pci/ctxfi/ctatc.c index 908658a00377..2ada8444abd9 100644 --- a/sound/pci/ctxfi/ctatc.c +++ b/sound/pci/ctxfi/ctatc.c @@ -275,7 +275,7 @@ static int atc_pcm_playback_prepare(struct ct_atc *atc, struct ct_atc_pcm *apcm) /* Get AMIXER resource */ n_amixer = (n_amixer < 2) ? 2 : n_amixer; - apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL); + apcm->amixers = kcalloc(n_amixer, sizeof(void *), GFP_KERNEL); if (!apcm->amixers) { err = -ENOMEM; goto error1; @@ -543,18 +543,18 @@ atc_pcm_capture_get_resources(struct ct_atc *atc, struct ct_atc_pcm *apcm) } if (n_srcc) { - apcm->srccs = kzalloc(sizeof(void *)*n_srcc, GFP_KERNEL); + apcm->srccs = kcalloc(n_srcc, sizeof(void *), GFP_KERNEL); if (!apcm->srccs) return -ENOMEM; } if (n_amixer) { - apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL); + apcm->amixers = kcalloc(n_amixer, sizeof(void *), GFP_KERNEL); if (!apcm->amixers) { err = -ENOMEM; goto error1; } } - apcm->srcimps = kzalloc(sizeof(void *)*n_srcimp, GFP_KERNEL); + apcm->srcimps = kcalloc(n_srcimp, sizeof(void *), GFP_KERNEL); if (!apcm->srcimps) { err = -ENOMEM; goto error1; @@ -819,7 +819,7 @@ static int spdif_passthru_playback_get_resources(struct ct_atc *atc, /* Get AMIXER resource */ n_amixer = (n_amixer < 2) ? 2 : n_amixer; - apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL); + apcm->amixers = kcalloc(n_amixer, sizeof(void *), GFP_KERNEL); if (!apcm->amixers) { err = -ENOMEM; goto error1; @@ -1378,19 +1378,19 @@ static int atc_get_resources(struct ct_atc *atc) num_daios = ((atc->model == CTSB1270) ? 8 : 7); num_srcs = ((atc->model == CTSB1270) ? 6 : 4); - atc->daios = kzalloc(sizeof(void *)*num_daios, GFP_KERNEL); + atc->daios = kcalloc(num_daios, sizeof(void *), GFP_KERNEL); if (!atc->daios) return -ENOMEM; - atc->srcs = kzalloc(sizeof(void *)*num_srcs, GFP_KERNEL); + atc->srcs = kcalloc(num_srcs, sizeof(void *), GFP_KERNEL); if (!atc->srcs) return -ENOMEM; - atc->srcimps = kzalloc(sizeof(void *)*num_srcs, GFP_KERNEL); + atc->srcimps = kcalloc(num_srcs, sizeof(void *), GFP_KERNEL); if (!atc->srcimps) return -ENOMEM; - atc->pcm = kzalloc(sizeof(void *)*(2*4), GFP_KERNEL); + atc->pcm = kcalloc(2 * 4, sizeof(void *), GFP_KERNEL); if (!atc->pcm) return -ENOMEM; diff --git a/sound/pci/ctxfi/ctdaio.c b/sound/pci/ctxfi/ctdaio.c index 7f089cb433e1..f35a7341e446 100644 --- a/sound/pci/ctxfi/ctdaio.c +++ b/sound/pci/ctxfi/ctdaio.c @@ -398,7 +398,8 @@ static int dao_rsc_init(struct dao *dao, if (err) return err; - dao->imappers = kzalloc(sizeof(void *)*desc->msr*2, GFP_KERNEL); + dao->imappers = kzalloc(array3_size(sizeof(void *), desc->msr, 2), + GFP_KERNEL); if (!dao->imappers) { err = -ENOMEM; goto error1; diff --git a/sound/pci/ctxfi/ctmixer.c b/sound/pci/ctxfi/ctmixer.c index 4f4a2a5dedb8..db710d0a609f 100644 --- a/sound/pci/ctxfi/ctmixer.c +++ b/sound/pci/ctxfi/ctmixer.c @@ -910,13 +910,14 @@ static int ct_mixer_get_mem(struct ct_mixer **rmixer) if (!mixer) return -ENOMEM; - mixer->amixers = kzalloc(sizeof(void *)*(NUM_CT_AMIXERS*CHN_NUM), + mixer->amixers = kcalloc(NUM_CT_AMIXERS * CHN_NUM, sizeof(void *), GFP_KERNEL); if (!mixer->amixers) { err = -ENOMEM; goto error1; } - mixer->sums = kzalloc(sizeof(void *)*(NUM_CT_SUMS*CHN_NUM), GFP_KERNEL); + mixer->sums = kcalloc(NUM_CT_SUMS * CHN_NUM, sizeof(void *), + GFP_KERNEL); if (!mixer->sums) { err = -ENOMEM; goto error2; diff --git a/sound/pci/ctxfi/ctsrc.c b/sound/pci/ctxfi/ctsrc.c index bb4c9c3c89ae..a4fc10723fc6 100644 --- a/sound/pci/ctxfi/ctsrc.c +++ b/sound/pci/ctxfi/ctsrc.c @@ -679,7 +679,7 @@ static int srcimp_rsc_init(struct srcimp *srcimp, return err; /* Reserve memory for imapper nodes */ - srcimp->imappers = kzalloc(sizeof(struct imapper)*desc->msr, + srcimp->imappers = kcalloc(desc->msr, sizeof(struct imapper), GFP_KERNEL); if (!srcimp->imappers) { err = -ENOMEM; diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c index 292e2c592c17..04e949aa01ad 100644 --- a/sound/pci/hda/patch_ca0132.c +++ b/sound/pci/hda/patch_ca0132.c @@ -7482,7 +7482,9 @@ static int ca0132_prepare_verbs(struct hda_codec *codec) spec->chip_init_verbs = ca0132_init_verbs0; if (spec->quirk == QUIRK_SBZ) spec->sbz_init_verbs = sbz_init_verbs; - spec->spec_init_verbs = kzalloc(sizeof(struct hda_verb) * NUM_SPEC_VERBS, GFP_KERNEL); + spec->spec_init_verbs = kcalloc(NUM_SPEC_VERBS, + sizeof(struct hda_verb), + GFP_KERNEL); if (!spec->spec_init_verbs) return -ENOMEM; diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 2175dccdf388..2fcdd84021a5 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -1899,7 +1899,7 @@ static void *wm_adsp_read_algs(struct wm_adsp *dsp, size_t n_algs, adsp_warn(dsp, "Algorithm list end %x 0x%x != 0xbedead\n", pos + len, be32_to_cpu(val)); - alg = kzalloc(len * 2, GFP_KERNEL | GFP_DMA); + alg = kcalloc(len, 2, GFP_KERNEL | GFP_DMA); if (!alg) return ERR_PTR(-ENOMEM); diff --git a/sound/soc/intel/common/sst-ipc.c b/sound/soc/intel/common/sst-ipc.c index 62f3a8e0ec87..dcff13802c00 100644 --- a/sound/soc/intel/common/sst-ipc.c +++ b/sound/soc/intel/common/sst-ipc.c @@ -121,8 +121,8 @@ static int msg_empty_list_init(struct sst_generic_ipc *ipc) { int i; - ipc->msg = kzalloc(sizeof(struct ipc_message) * - IPC_EMPTY_LIST_SIZE, GFP_KERNEL); + ipc->msg = kcalloc(IPC_EMPTY_LIST_SIZE, sizeof(struct ipc_message), + GFP_KERNEL); if (ipc->msg == NULL) return -ENOMEM; diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 3d56f1fe5914..61542847cb3b 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -373,8 +373,8 @@ static struct snd_soc_pcm_runtime *soc_new_pcm_runtime( if (!rtd->dai_link->ops) rtd->dai_link->ops = &null_snd_soc_ops; - rtd->codec_dais = kzalloc(sizeof(struct snd_soc_dai *) * - dai_link->num_codecs, + rtd->codec_dais = kcalloc(dai_link->num_codecs, + sizeof(struct snd_soc_dai *), GFP_KERNEL); if (!rtd->codec_dais) { kfree(rtd); diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 255cad43a972..229c12349803 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3055,7 +3055,7 @@ int snd_soc_dapm_new_widgets(struct snd_soc_card *card) continue; if (w->num_kcontrols) { - w->kcontrols = kzalloc(w->num_kcontrols * + w->kcontrols = kcalloc(w->num_kcontrols, sizeof(struct snd_kcontrol *), GFP_KERNEL); if (!w->kcontrols) { diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index 3fd5d9c867b9..53f121a50c97 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -885,7 +885,7 @@ static int soc_tplg_denum_create_texts(struct soc_enum *se, int i, ret; se->dobj.control.dtexts = - kzalloc(sizeof(char *) * ec->items, GFP_KERNEL); + kcalloc(ec->items, sizeof(char *), GFP_KERNEL); if (se->dobj.control.dtexts == NULL) return -ENOMEM; diff --git a/sound/usb/6fire/pcm.c b/sound/usb/6fire/pcm.c index 224a6a5d1c0e..2dd2518a71d3 100644 --- a/sound/usb/6fire/pcm.c +++ b/sound/usb/6fire/pcm.c @@ -591,12 +591,14 @@ static int usb6fire_pcm_buffers_init(struct pcm_runtime *rt) int i; for (i = 0; i < PCM_N_URBS; i++) { - rt->out_urbs[i].buffer = kzalloc(PCM_N_PACKETS_PER_URB - * PCM_MAX_PACKET_SIZE, GFP_KERNEL); + rt->out_urbs[i].buffer = kcalloc(PCM_MAX_PACKET_SIZE, + PCM_N_PACKETS_PER_URB, + GFP_KERNEL); if (!rt->out_urbs[i].buffer) return -ENOMEM; - rt->in_urbs[i].buffer = kzalloc(PCM_N_PACKETS_PER_URB - * PCM_MAX_PACKET_SIZE, GFP_KERNEL); + rt->in_urbs[i].buffer = kcalloc(PCM_MAX_PACKET_SIZE, + PCM_N_PACKETS_PER_URB, + GFP_KERNEL); if (!rt->in_urbs[i].buffer) return -ENOMEM; } diff --git a/sound/usb/line6/capture.c b/sound/usb/line6/capture.c index 947d6168f24a..d8a14d769f48 100644 --- a/sound/usb/line6/capture.c +++ b/sound/usb/line6/capture.c @@ -264,8 +264,8 @@ int line6_create_audio_in_urbs(struct snd_line6_pcm *line6pcm) struct usb_line6 *line6 = line6pcm->line6; int i; - line6pcm->in.urbs = kzalloc( - sizeof(struct urb *) * line6->iso_buffers, GFP_KERNEL); + line6pcm->in.urbs = kcalloc(line6->iso_buffers, sizeof(struct urb *), + GFP_KERNEL); if (line6pcm->in.urbs == NULL) return -ENOMEM; diff --git a/sound/usb/line6/playback.c b/sound/usb/line6/playback.c index 819e9b2d1d6e..dec89d2beb57 100644 --- a/sound/usb/line6/playback.c +++ b/sound/usb/line6/playback.c @@ -409,8 +409,8 @@ int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm) struct usb_line6 *line6 = line6pcm->line6; int i; - line6pcm->out.urbs = kzalloc( - sizeof(struct urb *) * line6->iso_buffers, GFP_KERNEL); + line6pcm->out.urbs = kcalloc(line6->iso_buffers, sizeof(struct urb *), + GFP_KERNEL); if (line6pcm->out.urbs == NULL) return -ENOMEM; diff --git a/virt/kvm/arm/vgic/vgic-v4.c b/virt/kvm/arm/vgic/vgic-v4.c index bc4265154bac..1ed5f2286b8e 100644 --- a/virt/kvm/arm/vgic/vgic-v4.c +++ b/virt/kvm/arm/vgic/vgic-v4.c @@ -126,7 +126,7 @@ int vgic_v4_init(struct kvm *kvm) nr_vcpus = atomic_read(&kvm->online_vcpus); - dist->its_vm.vpes = kzalloc(sizeof(*dist->its_vm.vpes) * nr_vcpus, + dist->its_vm.vpes = kcalloc(nr_vcpus, sizeof(*dist->its_vm.vpes), GFP_KERNEL); if (!dist->its_vm.vpes) return -ENOMEM; -- cgit v1.2.3 From 590b5b7d8671e011d1a8e1ab20c60addb249d015 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 12 Jun 2018 14:04:20 -0700 Subject: treewide: kzalloc_node() -> kcalloc_node() The kzalloc_node() function has a 2-factor argument form, kcalloc_node(). This patch replaces cases of: kzalloc_node(a * b, gfp, node) with: kcalloc_node(a * b, gfp, node) as well as handling cases of: kzalloc_node(a * b * c, gfp, node) with: kzalloc_node(array3_size(a, b, c), gfp, node) as it's slightly less ugly than: kcalloc_node(array_size(a, b), c, gfp, node) This does, however, attempt to ignore constant size factors like: kzalloc_node(4 * 1024, gfp, node) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc_node( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc_node( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc_node( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc_node( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc_node( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc_node( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc_node( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc_node( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc_node( - sizeof(char) * COUNT + COUNT , ...) | kzalloc_node( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc_node + kcalloc_node ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc_node( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc_node( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc_node( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc_node( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc_node( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc_node( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc_node( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc_node( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc_node( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc_node( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc_node( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc_node( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc_node( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc_node( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc_node( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc_node( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc_node(C1 * C2 * C3, ...) | kzalloc_node( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc_node( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc_node( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc_node( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc_node(sizeof(THING) * C2, ...) | kzalloc_node(sizeof(TYPE) * C2, ...) | kzalloc_node(C1 * C2 * C3, ...) | kzalloc_node(C1 * C2, ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc_node + kcalloc_node ( - (E1) * E2 + E1, E2 , ...) | - kzalloc_node + kcalloc_node ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc_node + kcalloc_node ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook --- block/blk-mq.c | 16 ++++++++-------- drivers/crypto/cavium/nitrox/nitrox_isr.c | 2 +- drivers/crypto/qat/qat_common/adf_isr.c | 2 +- drivers/crypto/virtio/virtio_crypto_algs.c | 2 +- drivers/infiniband/hw/qib/qib_init.c | 4 ++-- drivers/infiniband/sw/rdmavt/qp.c | 9 ++++----- drivers/net/ethernet/chelsio/cxgb4/sge.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 10 +++++----- drivers/ntb/hw/amd/ntb_hw_amd.c | 4 ++-- drivers/ntb/hw/intel/ntb_hw_intel.c | 4 ++-- drivers/ntb/ntb_transport.c | 4 ++-- drivers/scsi/sd_zbc.c | 2 +- drivers/usb/host/xhci-mem.c | 4 ++-- kernel/events/ring_buffer.c | 3 ++- lib/sbitmap.c | 2 +- 15 files changed, 35 insertions(+), 35 deletions(-) (limited to 'lib') diff --git a/block/blk-mq.c b/block/blk-mq.c index d2de0a719ab8..e9da5e6a8526 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1903,7 +1903,7 @@ struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set, if (!tags) return NULL; - tags->rqs = kzalloc_node(nr_tags * sizeof(struct request *), + tags->rqs = kcalloc_node(nr_tags, sizeof(struct request *), GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY, node); if (!tags->rqs) { @@ -1911,9 +1911,9 @@ struct blk_mq_tags *blk_mq_alloc_rq_map(struct blk_mq_tag_set *set, return NULL; } - tags->static_rqs = kzalloc_node(nr_tags * sizeof(struct request *), - GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY, - node); + tags->static_rqs = kcalloc_node(nr_tags, sizeof(struct request *), + GFP_NOIO | __GFP_NOWARN | __GFP_NORETRY, + node); if (!tags->static_rqs) { kfree(tags->rqs); blk_mq_free_tags(tags); @@ -2522,7 +2522,7 @@ struct request_queue *blk_mq_init_allocated_queue(struct blk_mq_tag_set *set, /* init q->mq_kobj and sw queues' kobjects */ blk_mq_sysfs_init(q); - q->queue_hw_ctx = kzalloc_node(nr_cpu_ids * sizeof(*(q->queue_hw_ctx)), + q->queue_hw_ctx = kcalloc_node(nr_cpu_ids, sizeof(*(q->queue_hw_ctx)), GFP_KERNEL, set->numa_node); if (!q->queue_hw_ctx) goto err_percpu; @@ -2741,14 +2741,14 @@ int blk_mq_alloc_tag_set(struct blk_mq_tag_set *set) if (set->nr_hw_queues > nr_cpu_ids) set->nr_hw_queues = nr_cpu_ids; - set->tags = kzalloc_node(nr_cpu_ids * sizeof(struct blk_mq_tags *), + set->tags = kcalloc_node(nr_cpu_ids, sizeof(struct blk_mq_tags *), GFP_KERNEL, set->numa_node); if (!set->tags) return -ENOMEM; ret = -ENOMEM; - set->mq_map = kzalloc_node(sizeof(*set->mq_map) * nr_cpu_ids, - GFP_KERNEL, set->numa_node); + set->mq_map = kcalloc_node(nr_cpu_ids, sizeof(*set->mq_map), + GFP_KERNEL, set->numa_node); if (!set->mq_map) goto out_free_tags; diff --git a/drivers/crypto/cavium/nitrox/nitrox_isr.c b/drivers/crypto/cavium/nitrox/nitrox_isr.c index dbead5f45df3..ee0d70ba25d5 100644 --- a/drivers/crypto/cavium/nitrox/nitrox_isr.c +++ b/drivers/crypto/cavium/nitrox/nitrox_isr.c @@ -254,7 +254,7 @@ static int nitrox_enable_msix(struct nitrox_device *ndev) * Entry 192: NPS_CORE_INT_ACTIVE */ nr_entries = (ndev->nr_queues * NR_RING_VECTORS) + 1; - entries = kzalloc_node(nr_entries * sizeof(struct msix_entry), + entries = kcalloc_node(nr_entries, sizeof(struct msix_entry), GFP_KERNEL, ndev->node); if (!entries) return -ENOMEM; diff --git a/drivers/crypto/qat/qat_common/adf_isr.c b/drivers/crypto/qat/qat_common/adf_isr.c index 06d49017a52b..cd1cdf5305bc 100644 --- a/drivers/crypto/qat/qat_common/adf_isr.c +++ b/drivers/crypto/qat/qat_common/adf_isr.c @@ -238,7 +238,7 @@ static int adf_isr_alloc_msix_entry_table(struct adf_accel_dev *accel_dev) if (!accel_dev->pf.vf_info) msix_num_entries += hw_data->num_banks; - entries = kzalloc_node(msix_num_entries * sizeof(*entries), + entries = kcalloc_node(msix_num_entries, sizeof(*entries), GFP_KERNEL, dev_to_node(&GET_DEV(accel_dev))); if (!entries) return -ENOMEM; diff --git a/drivers/crypto/virtio/virtio_crypto_algs.c b/drivers/crypto/virtio/virtio_crypto_algs.c index ba190cfa7aa1..af6a908dfa7a 100644 --- a/drivers/crypto/virtio/virtio_crypto_algs.c +++ b/drivers/crypto/virtio/virtio_crypto_algs.c @@ -371,7 +371,7 @@ __virtio_crypto_ablkcipher_do_req(struct virtio_crypto_sym_request *vc_sym_req, /* Why 3? outhdr + iv + inhdr */ sg_total = src_nents + dst_nents + 3; - sgs = kzalloc_node(sg_total * sizeof(*sgs), GFP_ATOMIC, + sgs = kcalloc_node(sg_total, sizeof(*sgs), GFP_ATOMIC, dev_to_node(&vcrypto->vdev->dev)); if (!sgs) return -ENOMEM; diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c index dd4547f537f7..704505618909 100644 --- a/drivers/infiniband/hw/qib/qib_init.c +++ b/drivers/infiniband/hw/qib/qib_init.c @@ -1673,8 +1673,8 @@ int qib_setup_eagerbufs(struct qib_ctxtdata *rcd) size = rcd->rcvegrbuf_size; if (!rcd->rcvegrbuf) { rcd->rcvegrbuf = - kzalloc_node(chunk * sizeof(rcd->rcvegrbuf[0]), - GFP_KERNEL, rcd->node_id); + kcalloc_node(chunk, sizeof(rcd->rcvegrbuf[0]), + GFP_KERNEL, rcd->node_id); if (!rcd->rcvegrbuf) goto bail; } diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c index 40046135c509..b68fde88f988 100644 --- a/drivers/infiniband/sw/rdmavt/qp.c +++ b/drivers/infiniband/sw/rdmavt/qp.c @@ -836,11 +836,10 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd, RCU_INIT_POINTER(qp->next, NULL); if (init_attr->qp_type == IB_QPT_RC) { qp->s_ack_queue = - kzalloc_node( - sizeof(*qp->s_ack_queue) * - rvt_max_atomic(rdi), - GFP_KERNEL, - rdi->dparms.node); + kcalloc_node(rvt_max_atomic(rdi), + sizeof(*qp->s_ack_queue), + GFP_KERNEL, + rdi->dparms.node); if (!qp->s_ack_queue) goto bail_qp; } diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index 7a271feec5e7..395e2a0e8d7f 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -699,7 +699,7 @@ static void *alloc_ring(struct device *dev, size_t nelem, size_t elem_size, if (!p) return NULL; if (sw_size) { - s = kzalloc_node(nelem * sw_size, GFP_KERNEL, node); + s = kcalloc_node(sw_size, nelem, GFP_KERNEL, node); if (!s) { dma_free_coherent(dev, len, p, *phys); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 89c96a0f708e..d56752273d00 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -352,7 +352,7 @@ static int mlx5e_rq_alloc_mpwqe_info(struct mlx5e_rq *rq, { int wq_sz = mlx5_wq_ll_get_size(&rq->mpwqe.wq); - rq->mpwqe.info = kzalloc_node(wq_sz * sizeof(*rq->mpwqe.info), + rq->mpwqe.info = kcalloc_node(wq_sz, sizeof(*rq->mpwqe.info), GFP_KERNEL, cpu_to_node(c->cpu)); if (!rq->mpwqe.info) return -ENOMEM; @@ -972,7 +972,7 @@ static int mlx5e_alloc_xdpsq_db(struct mlx5e_xdpsq *sq, int numa) { int wq_sz = mlx5_wq_cyc_get_size(&sq->wq); - sq->db.di = kzalloc_node(sizeof(*sq->db.di) * wq_sz, + sq->db.di = kcalloc_node(wq_sz, sizeof(*sq->db.di), GFP_KERNEL, numa); if (!sq->db.di) { mlx5e_free_xdpsq_db(sq); @@ -1031,7 +1031,7 @@ static int mlx5e_alloc_icosq_db(struct mlx5e_icosq *sq, int numa) { u8 wq_sz = mlx5_wq_cyc_get_size(&sq->wq); - sq->db.ico_wqe = kzalloc_node(sizeof(*sq->db.ico_wqe) * wq_sz, + sq->db.ico_wqe = kcalloc_node(wq_sz, sizeof(*sq->db.ico_wqe), GFP_KERNEL, numa); if (!sq->db.ico_wqe) return -ENOMEM; @@ -1086,9 +1086,9 @@ static int mlx5e_alloc_txqsq_db(struct mlx5e_txqsq *sq, int numa) int wq_sz = mlx5_wq_cyc_get_size(&sq->wq); int df_sz = wq_sz * MLX5_SEND_WQEBB_NUM_DS; - sq->db.dma_fifo = kzalloc_node(df_sz * sizeof(*sq->db.dma_fifo), + sq->db.dma_fifo = kcalloc_node(df_sz, sizeof(*sq->db.dma_fifo), GFP_KERNEL, numa); - sq->db.wqe_info = kzalloc_node(wq_sz * sizeof(*sq->db.wqe_info), + sq->db.wqe_info = kcalloc_node(wq_sz, sizeof(*sq->db.wqe_info), GFP_KERNEL, numa); if (!sq->db.dma_fifo || !sq->db.wqe_info) { mlx5e_free_txqsq_db(sq); diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c index 3cfa46876239..efb214fc545a 100644 --- a/drivers/ntb/hw/amd/ntb_hw_amd.c +++ b/drivers/ntb/hw/amd/ntb_hw_amd.c @@ -592,12 +592,12 @@ static int ndev_init_isr(struct amd_ntb_dev *ndev, ndev->db_mask = ndev->db_valid_mask; /* Try to set up msix irq */ - ndev->vec = kzalloc_node(msix_max * sizeof(*ndev->vec), + ndev->vec = kcalloc_node(msix_max, sizeof(*ndev->vec), GFP_KERNEL, node); if (!ndev->vec) goto err_msix_vec_alloc; - ndev->msix = kzalloc_node(msix_max * sizeof(*ndev->msix), + ndev->msix = kcalloc_node(msix_max, sizeof(*ndev->msix), GFP_KERNEL, node); if (!ndev->msix) goto err_msix_alloc; diff --git a/drivers/ntb/hw/intel/ntb_hw_intel.c b/drivers/ntb/hw/intel/ntb_hw_intel.c index 156b45cd4a19..3be323132896 100644 --- a/drivers/ntb/hw/intel/ntb_hw_intel.c +++ b/drivers/ntb/hw/intel/ntb_hw_intel.c @@ -448,12 +448,12 @@ static int ndev_init_isr(struct intel_ntb_dev *ndev, /* Try to set up msix irq */ - ndev->vec = kzalloc_node(msix_max * sizeof(*ndev->vec), + ndev->vec = kcalloc_node(msix_max, sizeof(*ndev->vec), GFP_KERNEL, node); if (!ndev->vec) goto err_msix_vec_alloc; - ndev->msix = kzalloc_node(msix_max * sizeof(*ndev->msix), + ndev->msix = kcalloc_node(msix_max, sizeof(*ndev->msix), GFP_KERNEL, node); if (!ndev->msix) goto err_msix_alloc; diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index 9878c48826e3..504bdcc57ae8 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -1102,7 +1102,7 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev) max_mw_count_for_spads = (spad_count - MW0_SZ_HIGH) / 2; nt->mw_count = min(mw_count, max_mw_count_for_spads); - nt->mw_vec = kzalloc_node(mw_count * sizeof(*nt->mw_vec), + nt->mw_vec = kcalloc_node(mw_count, sizeof(*nt->mw_vec), GFP_KERNEL, node); if (!nt->mw_vec) { rc = -ENOMEM; @@ -1143,7 +1143,7 @@ static int ntb_transport_probe(struct ntb_client *self, struct ntb_dev *ndev) nt->qp_bitmap = qp_bitmap; nt->qp_bitmap_free = qp_bitmap; - nt->qp_vec = kzalloc_node(qp_count * sizeof(*nt->qp_vec), + nt->qp_vec = kcalloc_node(qp_count, sizeof(*nt->qp_vec), GFP_KERNEL, node); if (!nt->qp_vec) { rc = -ENOMEM; diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index 323e3dc4bc59..76da8c3a6f09 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -494,7 +494,7 @@ out_free: static inline unsigned long * sd_zbc_alloc_zone_bitmap(u32 nr_zones, int numa_node) { - return kzalloc_node(BITS_TO_LONGS(nr_zones) * sizeof(unsigned long), + return kcalloc_node(BITS_TO_LONGS(nr_zones), sizeof(unsigned long), GFP_KERNEL, numa_node); } diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 4fe74711938e..acbd3d7b8828 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -2274,8 +2274,8 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) xhci->hw_ports[i].hw_portnum = i; } - xhci->rh_bw = kzalloc_node(sizeof(*xhci->rh_bw)*num_ports, flags, - dev_to_node(dev)); + xhci->rh_bw = kcalloc_node(num_ports, sizeof(*xhci->rh_bw), flags, + dev_to_node(dev)); if (!xhci->rh_bw) return -ENOMEM; for (i = 0; i < num_ports; i++) { diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index 1d8ca9ea9979..045a37e9ddee 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -614,7 +614,8 @@ int rb_alloc_aux(struct ring_buffer *rb, struct perf_event *event, } } - rb->aux_pages = kzalloc_node(nr_pages * sizeof(void *), GFP_KERNEL, node); + rb->aux_pages = kcalloc_node(nr_pages, sizeof(void *), GFP_KERNEL, + node); if (!rb->aux_pages) return -ENOMEM; diff --git a/lib/sbitmap.c b/lib/sbitmap.c index 6fdc6267f4a8..fdd1b8aa8ac6 100644 --- a/lib/sbitmap.c +++ b/lib/sbitmap.c @@ -52,7 +52,7 @@ int sbitmap_init_node(struct sbitmap *sb, unsigned int depth, int shift, return 0; } - sb->map = kzalloc_node(sb->map_nr * sizeof(*sb->map), flags, node); + sb->map = kcalloc_node(sb->map_nr, sizeof(*sb->map), flags, node); if (!sb->map) return -ENOMEM; -- cgit v1.2.3 From fad953ce0b22cfd352a9a90b070c34b8791e6868 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 12 Jun 2018 14:27:37 -0700 Subject: treewide: Use array_size() in vzalloc() The vzalloc() function has no 2-factor argument form, so multiplication factors need to be wrapped in array_size(). This patch replaces cases of: vzalloc(a * b) with: vzalloc(array_size(a, b)) as well as handling cases of: vzalloc(a * b * c) with: vzalloc(array3_size(a, b, c)) This does, however, attempt to ignore constant size factors like: vzalloc(4 * 1024) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( vzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | vzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( vzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | vzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | vzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | vzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | vzalloc( - sizeof(u8) * COUNT + COUNT , ...) | vzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | vzalloc( - sizeof(char) * COUNT + COUNT , ...) | vzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( vzalloc( - sizeof(TYPE) * (COUNT_ID) + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * COUNT_ID + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * COUNT_CONST + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vzalloc( - sizeof(THING) * (COUNT_ID) + array_size(COUNT_ID, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * COUNT_ID + array_size(COUNT_ID, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * COUNT_CONST + array_size(COUNT_CONST, sizeof(THING)) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ vzalloc( - SIZE * COUNT + array_size(COUNT, SIZE) , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( vzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( vzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | vzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( vzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( vzalloc(C1 * C2 * C3, ...) | vzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants. @@ expression E1, E2; constant C1, C2; @@ ( vzalloc(C1 * C2, ...) | vzalloc( - E1 * E2 + array_size(E1, E2) , ...) ) Signed-off-by: Kees Cook --- arch/powerpc/kvm/book3s_hv.c | 2 +- arch/powerpc/mm/mmu_context_iommu.c | 2 +- arch/x86/kvm/cpuid.c | 3 ++- block/partitions/check.c | 2 +- drivers/block/zram/zram_drv.c | 2 +- drivers/char/raw.c | 3 ++- drivers/cpufreq/intel_pstate.c | 2 +- drivers/dma/mic_x100_dma.c | 3 ++- drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 3 ++- drivers/gpu/drm/drm_hashtab.c | 2 +- drivers/gpu/drm/i915/gvt/gtt.c | 5 +++-- drivers/gpu/drm/i915/gvt/mmio.c | 2 +- drivers/gpu/drm/radeon/radeon_gart.c | 3 ++- drivers/gpu/drm/selftests/test-drm_mm.c | 18 +++++++++--------- drivers/gpu/drm/via/via_dmablit.c | 2 +- drivers/infiniband/core/umem_odp.c | 16 ++++++++++------ drivers/infiniband/hw/hns/hns_roce_mr.c | 2 +- drivers/infiniband/hw/qib/qib_init.c | 6 ++++-- drivers/infiniband/ulp/ipoib/ipoib_cm.c | 8 +++++--- drivers/infiniband/ulp/ipoib/ipoib_main.c | 3 ++- drivers/lightnvm/pblk-init.c | 2 +- drivers/lightnvm/pblk-recovery.c | 2 +- drivers/md/bcache/super.c | 4 ++-- drivers/md/dm-cache-policy-smq.c | 2 +- drivers/media/common/v4l2-tpg/v4l2-tpg-core.c | 15 ++++++++++----- drivers/media/pci/cx23885/cx23885-alsa.c | 2 +- drivers/media/pci/cx25821/cx25821-alsa.c | 2 +- drivers/media/pci/cx88/cx88-alsa.c | 2 +- drivers/media/pci/saa7134/saa7134-alsa.c | 2 +- drivers/media/platform/vivid/vivid-core.c | 4 ++-- drivers/media/v4l2-core/videobuf-dma-sg.c | 2 +- drivers/mtd/nand/raw/nandsim.c | 5 +++-- drivers/net/ethernet/broadcom/bnx2.c | 7 ++++--- drivers/net/ethernet/cavium/liquidio/octeon_droq.c | 4 ++-- drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 4 ++-- drivers/net/ethernet/huawei/hinic/hinic_hw_cmdq.c | 5 +++-- drivers/net/ethernet/neterion/vxge/vxge-config.c | 13 +++++++------ drivers/net/ethernet/qlogic/qed/qed_l2.c | 2 +- drivers/net/ethernet/qlogic/qede/qede_filter.c | 5 +++-- drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c | 5 +++-- drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c | 5 +++-- drivers/net/ethernet/sfc/ef10.c | 3 ++- drivers/net/ethernet/sfc/falcon/farch.c | 3 ++- drivers/net/ethernet/sfc/farch.c | 3 ++- drivers/net/ppp/pptp.c | 2 +- drivers/net/xen-netback/xenbus.c | 4 ++-- drivers/s390/char/sclp_sd.c | 2 +- drivers/scsi/megaraid/megaraid_sas_fusion.c | 10 ++++++---- drivers/scsi/qla2xxx/tcm_qla2xxx.c | 4 +++- drivers/soc/fsl/qbman/qman.c | 3 ++- drivers/staging/rtl8188eu/core/rtw_mlme.c | 2 +- drivers/staging/rtl8723bs/core/rtw_mlme.c | 2 +- drivers/staging/rts5208/rtsx_chip.c | 4 ++-- drivers/target/target_core_transport.c | 2 +- fs/nfsd/nfscache.c | 3 ++- fs/reiserfs/journal.c | 3 ++- fs/reiserfs/resize.c | 3 ++- kernel/bpf/verifier.c | 8 +++++--- kernel/kexec_file.c | 2 +- lib/test_firmware.c | 10 ++++++---- lib/test_kmod.c | 5 +++-- lib/test_rhashtable.c | 13 ++++++++----- net/core/ethtool.c | 6 +++--- net/packet/af_packet.c | 2 +- 64 files changed, 164 insertions(+), 118 deletions(-) (limited to 'lib') diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index cb6d2313b19f..746645cd2ba7 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -3548,7 +3548,7 @@ static void kvmppc_core_free_memslot_hv(struct kvm_memory_slot *free, static int kvmppc_core_create_memslot_hv(struct kvm_memory_slot *slot, unsigned long npages) { - slot->arch.rmap = vzalloc(npages * sizeof(*slot->arch.rmap)); + slot->arch.rmap = vzalloc(array_size(npages, sizeof(*slot->arch.rmap))); if (!slot->arch.rmap) return -ENOMEM; diff --git a/arch/powerpc/mm/mmu_context_iommu.c b/arch/powerpc/mm/mmu_context_iommu.c index 4c615fcb0cf0..abb43646927a 100644 --- a/arch/powerpc/mm/mmu_context_iommu.c +++ b/arch/powerpc/mm/mmu_context_iommu.c @@ -159,7 +159,7 @@ long mm_iommu_get(struct mm_struct *mm, unsigned long ua, unsigned long entries, goto unlock_exit; } - mem->hpas = vzalloc(entries * sizeof(mem->hpas[0])); + mem->hpas = vzalloc(array_size(entries, sizeof(mem->hpas[0]))); if (!mem->hpas) { kfree(mem); ret = -ENOMEM; diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 66fc27b92c59..812cada68e0f 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -785,7 +785,8 @@ int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid, return -EINVAL; r = -ENOMEM; - cpuid_entries = vzalloc(sizeof(struct kvm_cpuid_entry2) * cpuid->nent); + cpuid_entries = vzalloc(array_size(sizeof(struct kvm_cpuid_entry2), + cpuid->nent)); if (!cpuid_entries) goto out; diff --git a/block/partitions/check.c b/block/partitions/check.c index 720145c49066..ffe408fead0c 100644 --- a/block/partitions/check.c +++ b/block/partitions/check.c @@ -122,7 +122,7 @@ static struct parsed_partitions *allocate_partitions(struct gendisk *hd) return NULL; nr = disk_max_parts(hd); - state->parts = vzalloc(nr * sizeof(state->parts[0])); + state->parts = vzalloc(array_size(nr, sizeof(state->parts[0]))); if (!state->parts) { kfree(state); return NULL; diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index da51293e7c03..7436b2d27fa3 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -898,7 +898,7 @@ static bool zram_meta_alloc(struct zram *zram, u64 disksize) size_t num_pages; num_pages = disksize >> PAGE_SHIFT; - zram->table = vzalloc(num_pages * sizeof(*zram->table)); + zram->table = vzalloc(array_size(num_pages, sizeof(*zram->table))); if (!zram->table) return false; diff --git a/drivers/char/raw.c b/drivers/char/raw.c index 293167c6e254..fd6eec8085b4 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -321,7 +321,8 @@ static int __init raw_init(void) max_raw_minors = MAX_RAW_MINORS; } - raw_devices = vzalloc(sizeof(struct raw_device_data) * max_raw_minors); + raw_devices = vzalloc(array_size(max_raw_minors, + sizeof(struct raw_device_data))); if (!raw_devices) { printk(KERN_ERR "Not enough memory for raw device structures\n"); ret = -ENOMEM; diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 08960a55eb27..b6575408f279 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -2339,7 +2339,7 @@ hwp_cpu_matched: pr_info("Intel P-state driver initializing\n"); - all_cpu_data = vzalloc(sizeof(void *) * num_possible_cpus()); + all_cpu_data = vzalloc(array_size(sizeof(void *), num_possible_cpus())); if (!all_cpu_data) return -ENOMEM; diff --git a/drivers/dma/mic_x100_dma.c b/drivers/dma/mic_x100_dma.c index 94d7bd7d2880..68dd79783b54 100644 --- a/drivers/dma/mic_x100_dma.c +++ b/drivers/dma/mic_x100_dma.c @@ -385,7 +385,8 @@ static int mic_dma_alloc_desc_ring(struct mic_dma_chan *ch) if (dma_mapping_error(dev, ch->desc_ring_micpa)) goto map_error; - ch->tx_array = vzalloc(MIC_DMA_DESC_RX_SIZE * sizeof(*ch->tx_array)); + ch->tx_array = vzalloc(array_size(MIC_DMA_DESC_RX_SIZE, + sizeof(*ch->tx_array))); if (!ch->tx_array) goto tx_error; return 0; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c index 17d6b9fb6d77..dd11b7313ca0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c @@ -369,7 +369,8 @@ int amdgpu_gart_init(struct amdgpu_device *adev) #ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS /* Allocate pages table */ - adev->gart.pages = vzalloc(sizeof(void *) * adev->gart.num_cpu_pages); + adev->gart.pages = vzalloc(array_size(sizeof(void *), + adev->gart.num_cpu_pages)); if (adev->gart.pages == NULL) return -ENOMEM; #endif diff --git a/drivers/gpu/drm/drm_hashtab.c b/drivers/gpu/drm/drm_hashtab.c index dae18e58e79b..c92b00d42ece 100644 --- a/drivers/gpu/drm/drm_hashtab.c +++ b/drivers/gpu/drm/drm_hashtab.c @@ -47,7 +47,7 @@ int drm_ht_create(struct drm_open_hash *ht, unsigned int order) if (size <= PAGE_SIZE / sizeof(*ht->table)) ht->table = kcalloc(size, sizeof(*ht->table), GFP_KERNEL); else - ht->table = vzalloc(size*sizeof(*ht->table)); + ht->table = vzalloc(array_size(size, sizeof(*ht->table))); if (!ht->table) { DRM_ERROR("Out of memory for hash table\n"); return -ENOMEM; diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c index 78e55aafc8bc..23296547da95 100644 --- a/drivers/gpu/drm/i915/gvt/gtt.c +++ b/drivers/gpu/drm/i915/gvt/gtt.c @@ -1585,8 +1585,9 @@ static struct intel_vgpu_mm *intel_vgpu_create_ggtt_mm(struct intel_vgpu *vgpu) mm->type = INTEL_GVT_MM_GGTT; nr_entries = gvt_ggtt_gm_sz(vgpu->gvt) >> I915_GTT_PAGE_SHIFT; - mm->ggtt_mm.virtual_ggtt = vzalloc(nr_entries * - vgpu->gvt->device_info.gtt_entry_size); + mm->ggtt_mm.virtual_ggtt = + vzalloc(array_size(nr_entries, + vgpu->gvt->device_info.gtt_entry_size)); if (!mm->ggtt_mm.virtual_ggtt) { vgpu_free_mm(mm); return ERR_PTR(-ENOMEM); diff --git a/drivers/gpu/drm/i915/gvt/mmio.c b/drivers/gpu/drm/i915/gvt/mmio.c index e4960aff68bd..b31eb36fc102 100644 --- a/drivers/gpu/drm/i915/gvt/mmio.c +++ b/drivers/gpu/drm/i915/gvt/mmio.c @@ -267,7 +267,7 @@ int intel_vgpu_init_mmio(struct intel_vgpu *vgpu) { const struct intel_gvt_device_info *info = &vgpu->gvt->device_info; - vgpu->mmio.vreg = vzalloc(info->mmio_size * 2); + vgpu->mmio.vreg = vzalloc(array_size(info->mmio_size, 2)); if (!vgpu->mmio.vreg) return -ENOMEM; diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index 66149eaba78c..1cef155cc933 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -347,7 +347,8 @@ int radeon_gart_init(struct radeon_device *rdev) DRM_INFO("GART: num cpu pages %u, num gpu pages %u\n", rdev->gart.num_cpu_pages, rdev->gart.num_gpu_pages); /* Allocate pages table */ - rdev->gart.pages = vzalloc(sizeof(void *) * rdev->gart.num_cpu_pages); + rdev->gart.pages = vzalloc(array_size(sizeof(void *), + rdev->gart.num_cpu_pages)); if (rdev->gart.pages == NULL) { radeon_gart_fini(rdev); return -ENOMEM; diff --git a/drivers/gpu/drm/selftests/test-drm_mm.c b/drivers/gpu/drm/selftests/test-drm_mm.c index 7027a6739845..933af1c25387 100644 --- a/drivers/gpu/drm/selftests/test-drm_mm.c +++ b/drivers/gpu/drm/selftests/test-drm_mm.c @@ -389,7 +389,7 @@ static int __igt_reserve(unsigned int count, u64 size) if (!order) goto err; - nodes = vzalloc(sizeof(*nodes) * count); + nodes = vzalloc(array_size(count, sizeof(*nodes))); if (!nodes) goto err_order; @@ -889,7 +889,7 @@ static int __igt_insert_range(unsigned int count, u64 size, u64 start, u64 end) */ ret = -ENOMEM; - nodes = vzalloc(count * sizeof(*nodes)); + nodes = vzalloc(array_size(count, sizeof(*nodes))); if (!nodes) goto err; @@ -1046,7 +1046,7 @@ static int igt_align(void *ignored) * meets our requirements. */ - nodes = vzalloc(max_count * sizeof(*nodes)); + nodes = vzalloc(array_size(max_count, sizeof(*nodes))); if (!nodes) goto err; @@ -1416,7 +1416,7 @@ static int igt_evict(void *ignored) */ ret = -ENOMEM; - nodes = vzalloc(size * sizeof(*nodes)); + nodes = vzalloc(array_size(size, sizeof(*nodes))); if (!nodes) goto err; @@ -1526,7 +1526,7 @@ static int igt_evict_range(void *ignored) */ ret = -ENOMEM; - nodes = vzalloc(size * sizeof(*nodes)); + nodes = vzalloc(array_size(size, sizeof(*nodes))); if (!nodes) goto err; @@ -1627,7 +1627,7 @@ static int igt_topdown(void *ignored) */ ret = -ENOMEM; - nodes = vzalloc(count * sizeof(*nodes)); + nodes = vzalloc(array_size(count, sizeof(*nodes))); if (!nodes) goto err; @@ -1741,7 +1741,7 @@ static int igt_bottomup(void *ignored) */ ret = -ENOMEM; - nodes = vzalloc(count * sizeof(*nodes)); + nodes = vzalloc(array_size(count, sizeof(*nodes))); if (!nodes) goto err; @@ -2098,7 +2098,7 @@ static int igt_color_evict(void *ignored) */ ret = -ENOMEM; - nodes = vzalloc(total_size * sizeof(*nodes)); + nodes = vzalloc(array_size(total_size, sizeof(*nodes))); if (!nodes) goto err; @@ -2199,7 +2199,7 @@ static int igt_color_evict_range(void *ignored) */ ret = -ENOMEM; - nodes = vzalloc(total_size * sizeof(*nodes)); + nodes = vzalloc(array_size(total_size, sizeof(*nodes))); if (!nodes) goto err; diff --git a/drivers/gpu/drm/via/via_dmablit.c b/drivers/gpu/drm/via/via_dmablit.c index d6e84a589ef1..345bda4494e1 100644 --- a/drivers/gpu/drm/via/via_dmablit.c +++ b/drivers/gpu/drm/via/via_dmablit.c @@ -235,7 +235,7 @@ via_lock_all_dma_pages(drm_via_sg_info_t *vsg, drm_via_dmablit_t *xfer) vsg->num_pages = VIA_PFN(xfer->mem_addr + (xfer->num_lines * xfer->mem_stride - 1)) - first_pfn + 1; - vsg->pages = vzalloc(sizeof(struct page *) * vsg->num_pages); + vsg->pages = vzalloc(array_size(sizeof(struct page *), vsg->num_pages)); if (NULL == vsg->pages) return -ENOMEM; ret = get_user_pages_fast((unsigned long)xfer->mem_addr, diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c index 2aadf5813a40..182436b92ba9 100644 --- a/drivers/infiniband/core/umem_odp.c +++ b/drivers/infiniband/core/umem_odp.c @@ -285,13 +285,15 @@ struct ib_umem *ib_alloc_odp_umem(struct ib_ucontext *context, mutex_init(&odp_data->umem_mutex); init_completion(&odp_data->notifier_completion); - odp_data->page_list = vzalloc(pages * sizeof(*odp_data->page_list)); + odp_data->page_list = + vzalloc(array_size(pages, sizeof(*odp_data->page_list))); if (!odp_data->page_list) { ret = -ENOMEM; goto out_odp_data; } - odp_data->dma_list = vzalloc(pages * sizeof(*odp_data->dma_list)); + odp_data->dma_list = + vzalloc(array_size(pages, sizeof(*odp_data->dma_list))); if (!odp_data->dma_list) { ret = -ENOMEM; goto out_page_list; @@ -371,15 +373,17 @@ int ib_umem_odp_get(struct ib_ucontext *context, struct ib_umem *umem, init_completion(&umem->odp_data->notifier_completion); if (ib_umem_num_pages(umem)) { - umem->odp_data->page_list = vzalloc(ib_umem_num_pages(umem) * - sizeof(*umem->odp_data->page_list)); + umem->odp_data->page_list = + vzalloc(array_size(sizeof(*umem->odp_data->page_list), + ib_umem_num_pages(umem))); if (!umem->odp_data->page_list) { ret_val = -ENOMEM; goto out_odp_data; } - umem->odp_data->dma_list = vzalloc(ib_umem_num_pages(umem) * - sizeof(*umem->odp_data->dma_list)); + umem->odp_data->dma_list = + vzalloc(array_size(sizeof(*umem->odp_data->dma_list), + ib_umem_num_pages(umem))); if (!umem->odp_data->dma_list) { ret_val = -ENOMEM; goto out_page_list; diff --git a/drivers/infiniband/hw/hns/hns_roce_mr.c b/drivers/infiniband/hw/hns/hns_roce_mr.c index d1fe0e7957e3..eb26a5f6fc58 100644 --- a/drivers/infiniband/hw/hns/hns_roce_mr.c +++ b/drivers/infiniband/hw/hns/hns_roce_mr.c @@ -144,7 +144,7 @@ static int hns_roce_buddy_init(struct hns_roce_buddy *buddy, int max_order) buddy->bits[i] = kcalloc(s, sizeof(long), GFP_KERNEL | __GFP_NOWARN); if (!buddy->bits[i]) { - buddy->bits[i] = vzalloc(s * sizeof(long)); + buddy->bits[i] = vzalloc(array_size(s, sizeof(long))); if (!buddy->bits[i]) goto err_out_free; } diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c index 704505618909..d7cdc77d6306 100644 --- a/drivers/infiniband/hw/qib/qib_init.c +++ b/drivers/infiniband/hw/qib/qib_init.c @@ -369,11 +369,13 @@ static void init_shadow_tids(struct qib_devdata *dd) struct page **pages; dma_addr_t *addrs; - pages = vzalloc(dd->cfgctxts * dd->rcvtidcnt * sizeof(struct page *)); + pages = vzalloc(array_size(sizeof(struct page *), + dd->cfgctxts * dd->rcvtidcnt)); if (!pages) goto bail; - addrs = vzalloc(dd->cfgctxts * dd->rcvtidcnt * sizeof(dma_addr_t)); + addrs = vzalloc(array_size(sizeof(dma_addr_t), + dd->cfgctxts * dd->rcvtidcnt)); if (!addrs) goto bail_free; diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c index 962fbcb57dc7..6535d9beb24d 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c @@ -358,7 +358,8 @@ static int ipoib_cm_nonsrq_init_rx(struct net_device *dev, struct ib_cm_id *cm_i int ret; int i; - rx->rx_ring = vzalloc(ipoib_recvq_size * sizeof *rx->rx_ring); + rx->rx_ring = vzalloc(array_size(ipoib_recvq_size, + sizeof(*rx->rx_ring))); if (!rx->rx_ring) return -ENOMEM; @@ -1145,7 +1146,7 @@ static int ipoib_cm_tx_init(struct ipoib_cm_tx *p, u32 qpn, int ret; noio_flag = memalloc_noio_save(); - p->tx_ring = vzalloc(ipoib_sendq_size * sizeof(*p->tx_ring)); + p->tx_ring = vzalloc(array_size(ipoib_sendq_size, sizeof(*p->tx_ring))); if (!p->tx_ring) { memalloc_noio_restore(noio_flag); ret = -ENOMEM; @@ -1570,7 +1571,8 @@ static void ipoib_cm_create_srq(struct net_device *dev, int max_sge) return; } - priv->cm.srq_ring = vzalloc(ipoib_recvq_size * sizeof *priv->cm.srq_ring); + priv->cm.srq_ring = vzalloc(array_size(ipoib_recvq_size, + sizeof(*priv->cm.srq_ring))); if (!priv->cm.srq_ring) { ib_destroy_srq(priv->cm.srq); priv->cm.srq = NULL; diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 0d74c807110e..26cde95bc0f3 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -1710,7 +1710,8 @@ static int ipoib_dev_init_default(struct net_device *dev) if (!priv->rx_ring) goto out; - priv->tx_ring = vzalloc(ipoib_sendq_size * sizeof *priv->tx_ring); + priv->tx_ring = vzalloc(array_size(ipoib_sendq_size, + sizeof(*priv->tx_ring))); if (!priv->tx_ring) { pr_warn("%s: failed to allocate TX ring (%d entries)\n", priv->ca->name, ipoib_sendq_size); diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c index c7a7c2de0672..b57f764d6a16 100644 --- a/drivers/lightnvm/pblk-init.c +++ b/drivers/lightnvm/pblk-init.c @@ -187,7 +187,7 @@ static int pblk_rwb_init(struct pblk *pblk) nr_entries = pblk_rb_calculate_size(buffer_size); - entries = vzalloc(nr_entries * sizeof(struct pblk_rb_entry)); + entries = vzalloc(array_size(nr_entries, sizeof(struct pblk_rb_entry))); if (!entries) return -ENOMEM; diff --git a/drivers/lightnvm/pblk-recovery.c b/drivers/lightnvm/pblk-recovery.c index 598342833d0d..3a5069183859 100644 --- a/drivers/lightnvm/pblk-recovery.c +++ b/drivers/lightnvm/pblk-recovery.c @@ -260,7 +260,7 @@ static int pblk_recov_pad_oob(struct pblk *pblk, struct pblk_line *line, if (!pad_rq) return -ENOMEM; - data = vzalloc(pblk->max_write_pgs * geo->csecs); + data = vzalloc(array_size(pblk->max_write_pgs, geo->csecs)); if (!data) { ret = -ENOMEM; goto free_rq; diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index ec5f70d021de..fa4058e43202 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -2041,8 +2041,8 @@ static int cache_alloc(struct cache *ca) !init_fifo(&ca->free[RESERVE_NONE], free, GFP_KERNEL) || !init_fifo(&ca->free_inc, free << 2, GFP_KERNEL) || !init_heap(&ca->heap, free << 3, GFP_KERNEL) || - !(ca->buckets = vzalloc(sizeof(struct bucket) * - ca->sb.nbuckets)) || + !(ca->buckets = vzalloc(array_size(sizeof(struct bucket), + ca->sb.nbuckets))) || !(ca->prio_buckets = kzalloc(array3_size(sizeof(uint64_t), prio_buckets(ca), 2), GFP_KERNEL)) || diff --git a/drivers/md/dm-cache-policy-smq.c b/drivers/md/dm-cache-policy-smq.c index 4d69b6f4129e..1b5b9ad9e492 100644 --- a/drivers/md/dm-cache-policy-smq.c +++ b/drivers/md/dm-cache-policy-smq.c @@ -69,7 +69,7 @@ static int space_init(struct entry_space *es, unsigned nr_entries) return 0; } - es->begin = vzalloc(sizeof(struct entry) * nr_entries); + es->begin = vzalloc(array_size(nr_entries, sizeof(struct entry))); if (!es->begin) return -ENOMEM; diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c index 9b64f4f354bf..abd4c788dffd 100644 --- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c +++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c @@ -119,12 +119,14 @@ int tpg_alloc(struct tpg_data *tpg, unsigned max_w) for (plane = 0; plane < TPG_MAX_PLANES; plane++) { unsigned pixelsz = plane ? 2 : 4; - tpg->lines[pat][plane] = vzalloc(max_w * 2 * pixelsz); + tpg->lines[pat][plane] = + vzalloc(array3_size(max_w, 2, pixelsz)); if (!tpg->lines[pat][plane]) return -ENOMEM; if (plane == 0) continue; - tpg->downsampled_lines[pat][plane] = vzalloc(max_w * 2 * pixelsz); + tpg->downsampled_lines[pat][plane] = + vzalloc(array3_size(max_w, 2, pixelsz)); if (!tpg->downsampled_lines[pat][plane]) return -ENOMEM; } @@ -132,13 +134,16 @@ int tpg_alloc(struct tpg_data *tpg, unsigned max_w) for (plane = 0; plane < TPG_MAX_PLANES; plane++) { unsigned pixelsz = plane ? 2 : 4; - tpg->contrast_line[plane] = vzalloc(max_w * pixelsz); + tpg->contrast_line[plane] = + vzalloc(array_size(pixelsz, max_w)); if (!tpg->contrast_line[plane]) return -ENOMEM; - tpg->black_line[plane] = vzalloc(max_w * pixelsz); + tpg->black_line[plane] = + vzalloc(array_size(pixelsz, max_w)); if (!tpg->black_line[plane]) return -ENOMEM; - tpg->random_line[plane] = vzalloc(max_w * 2 * pixelsz); + tpg->random_line[plane] = + vzalloc(array3_size(max_w, 2, pixelsz)); if (!tpg->random_line[plane]) return -ENOMEM; } diff --git a/drivers/media/pci/cx23885/cx23885-alsa.c b/drivers/media/pci/cx23885/cx23885-alsa.c index 20b3cb17f97f..db1e8ff35474 100644 --- a/drivers/media/pci/cx23885/cx23885-alsa.c +++ b/drivers/media/pci/cx23885/cx23885-alsa.c @@ -95,7 +95,7 @@ static int cx23885_alsa_dma_init(struct cx23885_audio_dev *chip, int nr_pages) memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT); buf->nr_pages = nr_pages; - buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist)); + buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages)); if (NULL == buf->sglist) goto vzalloc_err; diff --git a/drivers/media/pci/cx25821/cx25821-alsa.c b/drivers/media/pci/cx25821/cx25821-alsa.c index a45bf0331eeb..ef6380651c10 100644 --- a/drivers/media/pci/cx25821/cx25821-alsa.c +++ b/drivers/media/pci/cx25821/cx25821-alsa.c @@ -159,7 +159,7 @@ static int cx25821_alsa_dma_init(struct cx25821_audio_dev *chip, int nr_pages) memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT); buf->nr_pages = nr_pages; - buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist)); + buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages)); if (NULL == buf->sglist) goto vzalloc_err; diff --git a/drivers/media/pci/cx88/cx88-alsa.c b/drivers/media/pci/cx88/cx88-alsa.c index 8a28fda703a2..e5c3387cd1e8 100644 --- a/drivers/media/pci/cx88/cx88-alsa.c +++ b/drivers/media/pci/cx88/cx88-alsa.c @@ -298,7 +298,7 @@ static int cx88_alsa_dma_init(struct cx88_audio_dev *chip, int nr_pages) memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT); buf->nr_pages = nr_pages; - buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist)); + buf->sglist = vzalloc(array_size(sizeof(*buf->sglist), buf->nr_pages)); if (!buf->sglist) goto vzalloc_err; diff --git a/drivers/media/pci/saa7134/saa7134-alsa.c b/drivers/media/pci/saa7134/saa7134-alsa.c index 72311445d13d..b90cfde6e301 100644 --- a/drivers/media/pci/saa7134/saa7134-alsa.c +++ b/drivers/media/pci/saa7134/saa7134-alsa.c @@ -279,7 +279,7 @@ static int saa7134_alsa_dma_init(struct saa7134_dev *dev, int nr_pages) memset(dma->vaddr, 0, nr_pages << PAGE_SHIFT); dma->nr_pages = nr_pages; - dma->sglist = vzalloc(dma->nr_pages * sizeof(*dma->sglist)); + dma->sglist = vzalloc(array_size(sizeof(*dma->sglist), dma->nr_pages)); if (NULL == dma->sglist) goto vzalloc_err; diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c index 59031018985e..31db363602e5 100644 --- a/drivers/media/platform/vivid/vivid-core.c +++ b/drivers/media/platform/vivid/vivid-core.c @@ -844,10 +844,10 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) tpg_init(&dev->tpg, 640, 360); if (tpg_alloc(&dev->tpg, MAX_ZOOM * MAX_WIDTH)) goto free_dev; - dev->scaled_line = vzalloc(MAX_ZOOM * MAX_WIDTH); + dev->scaled_line = vzalloc(array_size(MAX_WIDTH, MAX_ZOOM)); if (!dev->scaled_line) goto free_dev; - dev->blended_line = vzalloc(MAX_ZOOM * MAX_WIDTH); + dev->blended_line = vzalloc(array_size(MAX_WIDTH, MAX_ZOOM)); if (!dev->blended_line) goto free_dev; diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c index 314abde9a922..08929c087e27 100644 --- a/drivers/media/v4l2-core/videobuf-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf-dma-sg.c @@ -69,7 +69,7 @@ static struct scatterlist *videobuf_vmalloc_to_sg(unsigned char *virt, struct page *pg; int i; - sglist = vzalloc(nr_pages * sizeof(*sglist)); + sglist = vzalloc(array_size(nr_pages, sizeof(*sglist))); if (NULL == sglist) return NULL; sg_init_table(sglist, nr_pages); diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c index 9dc29d4389f7..f8edacde49ab 100644 --- a/drivers/mtd/nand/raw/nandsim.c +++ b/drivers/mtd/nand/raw/nandsim.c @@ -565,8 +565,9 @@ static int __init alloc_device(struct nandsim *ns) err = -EINVAL; goto err_close; } - ns->pages_written = vzalloc(BITS_TO_LONGS(ns->geom.pgnum) * - sizeof(unsigned long)); + ns->pages_written = + vzalloc(array_size(sizeof(unsigned long), + BITS_TO_LONGS(ns->geom.pgnum))); if (!ns->pages_written) { NS_ERR("alloc_device: unable to allocate pages written array\n"); err = -ENOMEM; diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c index e13bf3b4636d..122fdb80a789 100644 --- a/drivers/net/ethernet/broadcom/bnx2.c +++ b/drivers/net/ethernet/broadcom/bnx2.c @@ -778,7 +778,7 @@ bnx2_alloc_rx_mem(struct bnx2 *bp) int j; rxr->rx_buf_ring = - vzalloc(SW_RXBD_RING_SIZE * bp->rx_max_ring); + vzalloc(array_size(SW_RXBD_RING_SIZE, bp->rx_max_ring)); if (!rxr->rx_buf_ring) return -ENOMEM; @@ -794,8 +794,9 @@ bnx2_alloc_rx_mem(struct bnx2 *bp) } if (bp->rx_pg_ring_size) { - rxr->rx_pg_ring = vzalloc(SW_RXPG_RING_SIZE * - bp->rx_max_pg_ring); + rxr->rx_pg_ring = + vzalloc(array_size(SW_RXPG_RING_SIZE, + bp->rx_max_pg_ring)); if (!rxr->rx_pg_ring) return -ENOMEM; diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c index f044718cea52..5b5b6228d495 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c @@ -286,8 +286,8 @@ int octeon_init_droq(struct octeon_device *oct, numa_node); if (!droq->recv_buf_list) droq->recv_buf_list = (struct octeon_recv_buffer *) - vzalloc(droq->max_count * - OCT_DROQ_RECVBUF_SIZE); + vzalloc(array_size(droq->max_count, + OCT_DROQ_RECVBUF_SIZE)); if (!droq->recv_buf_list) { dev_err(&oct->pci_dev->dev, "Output queue recv buf list alloc failed\n"); goto init_droq_fail; diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c index 85e1d14514fc..0ce07f6eb1e6 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c @@ -1406,8 +1406,8 @@ static int hns_dsaf_init(struct dsaf_device *dsaf_dev) return ret; /* malloc mem for tcam mac key(vlan+mac) */ - priv->soft_mac_tbl = vzalloc(sizeof(*priv->soft_mac_tbl) - * DSAF_TCAM_SUM); + priv->soft_mac_tbl = vzalloc(array_size(DSAF_TCAM_SUM, + sizeof(*priv->soft_mac_tbl))); if (!priv->soft_mac_tbl) { ret = -ENOMEM; goto remove_hw; diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_cmdq.c b/drivers/net/ethernet/huawei/hinic/hinic_hw_cmdq.c index 28a81ac97af5..4d09ea786b35 100644 --- a/drivers/net/ethernet/huawei/hinic/hinic_hw_cmdq.c +++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_cmdq.c @@ -753,11 +753,12 @@ static int init_cmdq(struct hinic_cmdq *cmdq, struct hinic_wq *wq, spin_lock_init(&cmdq->cmdq_lock); - cmdq->done = vzalloc(wq->q_depth * sizeof(*cmdq->done)); + cmdq->done = vzalloc(array_size(sizeof(*cmdq->done), wq->q_depth)); if (!cmdq->done) return -ENOMEM; - cmdq->errcode = vzalloc(wq->q_depth * sizeof(*cmdq->errcode)); + cmdq->errcode = vzalloc(array_size(sizeof(*cmdq->errcode), + wq->q_depth)); if (!cmdq->errcode) { err = -ENOMEM; goto err_errcode; diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.c b/drivers/net/ethernet/neterion/vxge/vxge-config.c index 8d0295655933..358ed6118881 100644 --- a/drivers/net/ethernet/neterion/vxge/vxge-config.c +++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c @@ -2565,7 +2565,7 @@ __vxge_hw_mempool_grow(struct vxge_hw_mempool *mempool, u32 num_allocate, * allocate new memblock and its private part at once. * This helps to minimize memory usage a lot. */ mempool->memblocks_priv_arr[i] = - vzalloc(mempool->items_priv_size * n_items); + vzalloc(array_size(mempool->items_priv_size, n_items)); if (mempool->memblocks_priv_arr[i] == NULL) { status = VXGE_HW_ERR_OUT_OF_MEMORY; goto exit; @@ -2665,7 +2665,7 @@ __vxge_hw_mempool_create(struct __vxge_hw_device *devh, /* allocate array of memblocks */ mempool->memblocks_arr = - vzalloc(sizeof(void *) * mempool->memblocks_max); + vzalloc(array_size(sizeof(void *), mempool->memblocks_max)); if (mempool->memblocks_arr == NULL) { __vxge_hw_mempool_destroy(mempool); status = VXGE_HW_ERR_OUT_OF_MEMORY; @@ -2675,7 +2675,7 @@ __vxge_hw_mempool_create(struct __vxge_hw_device *devh, /* allocate array of private parts of items per memblocks */ mempool->memblocks_priv_arr = - vzalloc(sizeof(void *) * mempool->memblocks_max); + vzalloc(array_size(sizeof(void *), mempool->memblocks_max)); if (mempool->memblocks_priv_arr == NULL) { __vxge_hw_mempool_destroy(mempool); status = VXGE_HW_ERR_OUT_OF_MEMORY; @@ -2685,8 +2685,8 @@ __vxge_hw_mempool_create(struct __vxge_hw_device *devh, /* allocate array of memblocks DMA objects */ mempool->memblocks_dma_arr = - vzalloc(sizeof(struct vxge_hw_mempool_dma) * - mempool->memblocks_max); + vzalloc(array_size(sizeof(struct vxge_hw_mempool_dma), + mempool->memblocks_max)); if (mempool->memblocks_dma_arr == NULL) { __vxge_hw_mempool_destroy(mempool); status = VXGE_HW_ERR_OUT_OF_MEMORY; @@ -2695,7 +2695,8 @@ __vxge_hw_mempool_create(struct __vxge_hw_device *devh, } /* allocate hash array of items */ - mempool->items_arr = vzalloc(sizeof(void *) * mempool->items_max); + mempool->items_arr = vzalloc(array_size(sizeof(void *), + mempool->items_max)); if (mempool->items_arr == NULL) { __vxge_hw_mempool_destroy(mempool); status = VXGE_HW_ERR_OUT_OF_MEMORY; diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c index de1c70843efd..99973e10b179 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_l2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c @@ -2435,7 +2435,7 @@ static int qed_update_vport(struct qed_dev *cdev, if (!cdev) return -ENODEV; - rss = vzalloc(sizeof(*rss) * cdev->num_hwfns); + rss = vzalloc(array_size(sizeof(*rss), cdev->num_hwfns)); if (!rss) return -ENOMEM; diff --git a/drivers/net/ethernet/qlogic/qede/qede_filter.c b/drivers/net/ethernet/qlogic/qede/qede_filter.c index e9e088d9c815..b823bfe2ea4d 100644 --- a/drivers/net/ethernet/qlogic/qede/qede_filter.c +++ b/drivers/net/ethernet/qlogic/qede/qede_filter.c @@ -342,8 +342,9 @@ int qede_alloc_arfs(struct qede_dev *edev) for (i = 0; i <= QEDE_RFS_FLW_MASK; i++) INIT_HLIST_HEAD(QEDE_ARFS_BUCKET_HEAD(edev, i)); - edev->arfs->arfs_fltr_bmap = vzalloc(BITS_TO_LONGS(QEDE_RFS_MAX_FLTR) * - sizeof(long)); + edev->arfs->arfs_fltr_bmap = + vzalloc(array_size(sizeof(long), + BITS_TO_LONGS(QEDE_RFS_MAX_FLTR))); if (!edev->arfs->arfs_fltr_bmap) { vfree(edev->arfs); edev->arfs = NULL; diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c index 97c146e7698a..569d54ededec 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c @@ -386,8 +386,9 @@ int qlcnic_83xx_setup_intr(struct qlcnic_adapter *adapter) } /* setup interrupt mapping table for fw */ - ahw->intr_tbl = vzalloc(num_msix * - sizeof(struct qlcnic_intrpt_config)); + ahw->intr_tbl = + vzalloc(array_size(num_msix, + sizeof(struct qlcnic_intrpt_config))); if (!ahw->intr_tbl) return -ENOMEM; diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index 8c6724063231..2d38d1ac2aae 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -916,8 +916,9 @@ int qlcnic_82xx_mq_intrpt(struct qlcnic_adapter *adapter, int op_type) if (qlcnic_check_multi_tx(adapter) && !ahw->diag_test && (adapter->flags & QLCNIC_MSIX_ENABLED)) { - ahw->intr_tbl = vzalloc(ahw->num_msix * - sizeof(struct qlcnic_intrpt_config)); + ahw->intr_tbl = + vzalloc(array_size(sizeof(struct qlcnic_intrpt_config), + ahw->num_msix)); if (!ahw->intr_tbl) return -ENOMEM; diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index d90a7b1f4088..23f0785c0573 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -4984,7 +4984,8 @@ static int efx_ef10_filter_table_probe(struct efx_nic *efx) net_dev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; } - table->entry = vzalloc(HUNT_FILTER_TBL_ROWS * sizeof(*table->entry)); + table->entry = vzalloc(array_size(HUNT_FILTER_TBL_ROWS, + sizeof(*table->entry))); if (!table->entry) { rc = -ENOMEM; goto fail; diff --git a/drivers/net/ethernet/sfc/falcon/farch.c b/drivers/net/ethernet/sfc/falcon/farch.c index 494884f6af4a..411a2f419447 100644 --- a/drivers/net/ethernet/sfc/falcon/farch.c +++ b/drivers/net/ethernet/sfc/falcon/farch.c @@ -2755,7 +2755,8 @@ int ef4_farch_filter_table_probe(struct ef4_nic *efx) GFP_KERNEL); if (!table->used_bitmap) goto fail; - table->spec = vzalloc(table->size * sizeof(*table->spec)); + table->spec = vzalloc(array_size(sizeof(*table->spec), + table->size)); if (!table->spec) goto fail; } diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c index c72adf8b52ea..8edf20967c82 100644 --- a/drivers/net/ethernet/sfc/farch.c +++ b/drivers/net/ethernet/sfc/farch.c @@ -2826,7 +2826,8 @@ int efx_farch_filter_table_probe(struct efx_nic *efx) GFP_KERNEL); if (!table->used_bitmap) goto fail; - table->spec = vzalloc(table->size * sizeof(*table->spec)); + table->spec = vzalloc(array_size(sizeof(*table->spec), + table->size)); if (!table->spec) goto fail; } diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c index 157b67c1bf8e..67ffe74747a1 100644 --- a/drivers/net/ppp/pptp.c +++ b/drivers/net/ppp/pptp.c @@ -648,7 +648,7 @@ static int __init pptp_init_module(void) int err = 0; pr_info("PPTP driver version " PPTP_DRIVER_VERSION "\n"); - callid_sock = vzalloc((MAX_CALLID + 1) * sizeof(void *)); + callid_sock = vzalloc(array_size(sizeof(void *), (MAX_CALLID + 1))); if (!callid_sock) return -ENOMEM; diff --git a/drivers/net/xen-netback/xenbus.c b/drivers/net/xen-netback/xenbus.c index e1aef253601e..cd51492ae6c2 100644 --- a/drivers/net/xen-netback/xenbus.c +++ b/drivers/net/xen-netback/xenbus.c @@ -977,8 +977,8 @@ static void connect(struct backend_info *be) } /* Use the number of queues requested by the frontend */ - be->vif->queues = vzalloc(requested_num_queues * - sizeof(struct xenvif_queue)); + be->vif->queues = vzalloc(array_size(requested_num_queues, + sizeof(struct xenvif_queue))); if (!be->vif->queues) { xenbus_dev_fatal(dev, -ENOMEM, "allocating queues"); diff --git a/drivers/s390/char/sclp_sd.c b/drivers/s390/char/sclp_sd.c index 99f41db5123b..1e244f78f192 100644 --- a/drivers/s390/char/sclp_sd.c +++ b/drivers/s390/char/sclp_sd.c @@ -300,7 +300,7 @@ static int sclp_sd_store_data(struct sclp_sd_data *result, u8 di) goto out_result; /* Allocate memory */ - data = vzalloc((size_t) dsize * PAGE_SIZE); + data = vzalloc(array_size((size_t)dsize, PAGE_SIZE)); if (!data) { rc = -ENOMEM; goto out; diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index b965d4fe18ef..94c23ad51179 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -4829,8 +4829,9 @@ megasas_alloc_fusion_context(struct megasas_instance *instance) (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO, fusion->log_to_span_pages); if (!fusion->log_to_span) { - fusion->log_to_span = vzalloc(MAX_LOGICAL_DRIVES_EXT * - sizeof(LD_SPAN_INFO)); + fusion->log_to_span = + vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, + sizeof(LD_SPAN_INFO))); if (!fusion->log_to_span) { dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__); @@ -4844,8 +4845,9 @@ megasas_alloc_fusion_context(struct megasas_instance *instance) (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, fusion->load_balance_info_pages); if (!fusion->load_balance_info) { - fusion->load_balance_info = vzalloc(MAX_LOGICAL_DRIVES_EXT * - sizeof(struct LD_LOAD_BALANCE_INFO)); + fusion->load_balance_info = + vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, + sizeof(struct LD_LOAD_BALANCE_INFO))); if (!fusion->load_balance_info) dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " "continuing without Load Balance support\n"); diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c index 0c2e82af9c0a..7732e9336d43 100644 --- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c +++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c @@ -1661,7 +1661,9 @@ static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) return rc; } - lport->lport_loopid_map = vzalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); + lport->lport_loopid_map = + vzalloc(array_size(65536, + sizeof(struct tcm_qla2xxx_fc_loopid))); if (!lport->lport_loopid_map) { pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c index a7e94a3decf2..ecb22749df0b 100644 --- a/drivers/soc/fsl/qbman/qman.c +++ b/drivers/soc/fsl/qbman/qman.c @@ -1021,7 +1021,8 @@ int qman_alloc_fq_table(u32 _num_fqids) { num_fqids = _num_fqids; - fq_table = vzalloc(num_fqids * 2 * sizeof(struct qman_fq *)); + fq_table = vzalloc(array3_size(sizeof(struct qman_fq *), + num_fqids, 2)); if (!fq_table) return -ENOMEM; diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme.c b/drivers/staging/rtl8188eu/core/rtw_mlme.c index 24e92998a30c..50e7cae32f75 100644 --- a/drivers/staging/rtl8188eu/core/rtw_mlme.c +++ b/drivers/staging/rtl8188eu/core/rtw_mlme.c @@ -53,7 +53,7 @@ int rtw_init_mlme_priv(struct adapter *padapter) memset(&pmlmepriv->assoc_ssid, 0, sizeof(struct ndis_802_11_ssid)); - pbuf = vzalloc(MAX_BSS_CNT * (sizeof(struct wlan_network))); + pbuf = vzalloc(array_size(MAX_BSS_CNT, sizeof(struct wlan_network))); if (!pbuf) { res = _FAIL; diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme.c b/drivers/staging/rtl8723bs/core/rtw_mlme.c index cc4f115e082c..f9392b8db49b 100644 --- a/drivers/staging/rtl8723bs/core/rtw_mlme.c +++ b/drivers/staging/rtl8723bs/core/rtw_mlme.c @@ -37,7 +37,7 @@ sint _rtw_init_mlme_priv(struct adapter *padapter) memset(&pmlmepriv->assoc_ssid, 0, sizeof(struct ndis_802_11_ssid)); - pbuf = vzalloc(MAX_BSS_CNT * (sizeof(struct wlan_network))); + pbuf = vzalloc(array_size(MAX_BSS_CNT, sizeof(struct wlan_network))); if (pbuf == NULL) { res = _FAIL; diff --git a/drivers/staging/rts5208/rtsx_chip.c b/drivers/staging/rts5208/rtsx_chip.c index f8f9579cc679..8a823466ca2b 100644 --- a/drivers/staging/rts5208/rtsx_chip.c +++ b/drivers/staging/rts5208/rtsx_chip.c @@ -1660,13 +1660,13 @@ int rtsx_write_cfg_seq(struct rtsx_chip *chip, u8 func, u16 addr, u8 *buf, dev_dbg(rtsx_dev(chip), "dw_len = %d\n", dw_len); - data = vzalloc(dw_len * 4); + data = vzalloc(array_size(dw_len, 4)); if (!data) { rtsx_trace(chip); return STATUS_NOMEM; } - mask = vzalloc(dw_len * 4); + mask = vzalloc(array_size(dw_len, 4)); if (!mask) { vfree(data); rtsx_trace(chip); diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index efe8214f2df3..ee5081ba5313 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -253,7 +253,7 @@ int transport_alloc_session_tags(struct se_session *se_sess, se_sess->sess_cmd_map = kcalloc(tag_size, tag_num, GFP_KERNEL | __GFP_NOWARN | __GFP_RETRY_MAYFAIL); if (!se_sess->sess_cmd_map) { - se_sess->sess_cmd_map = vzalloc(tag_num * tag_size); + se_sess->sess_cmd_map = vzalloc(array_size(tag_size, tag_num)); if (!se_sess->sess_cmd_map) { pr_err("Unable to allocate se_sess->sess_cmd_map\n"); return -ENOMEM; diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index 334f2ad60704..223b3b2dff87 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -177,7 +177,8 @@ int nfsd_reply_cache_init(void) drc_hashtbl = kcalloc(hashsize, sizeof(*drc_hashtbl), GFP_KERNEL); if (!drc_hashtbl) { - drc_hashtbl = vzalloc(hashsize * sizeof(*drc_hashtbl)); + drc_hashtbl = vzalloc(array_size(hashsize, + sizeof(*drc_hashtbl))); if (!drc_hashtbl) goto out_nomem; } diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 358ee2a1ce1a..52eb5d293a34 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -350,7 +350,8 @@ static struct reiserfs_journal_cnode *allocate_cnodes(int num_cnodes) if (num_cnodes <= 0) { return NULL; } - head = vzalloc(num_cnodes * sizeof(struct reiserfs_journal_cnode)); + head = vzalloc(array_size(num_cnodes, + sizeof(struct reiserfs_journal_cnode))); if (!head) { return NULL; } diff --git a/fs/reiserfs/resize.c b/fs/reiserfs/resize.c index 6052d323bc9a..8096c74c38ac 100644 --- a/fs/reiserfs/resize.c +++ b/fs/reiserfs/resize.c @@ -120,7 +120,8 @@ int reiserfs_resize(struct super_block *s, unsigned long block_count_new) * array of bitmap block pointers */ bitmap = - vzalloc(sizeof(struct reiserfs_bitmap_info) * bmap_nr_new); + vzalloc(array_size(bmap_nr_new, + sizeof(struct reiserfs_bitmap_info))); if (!bitmap) { /* * Journal bitmaps are still supersized, but the diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 1494e087890e..9e2bf834f13a 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -5206,7 +5206,8 @@ static int adjust_insn_aux_data(struct bpf_verifier_env *env, u32 prog_len, if (cnt == 1) return 0; - new_data = vzalloc(sizeof(struct bpf_insn_aux_data) * prog_len); + new_data = vzalloc(array_size(prog_len, + sizeof(struct bpf_insn_aux_data))); if (!new_data) return -ENOMEM; memcpy(new_data, old_data, sizeof(struct bpf_insn_aux_data) * off); @@ -5870,8 +5871,9 @@ int bpf_check(struct bpf_prog **prog, union bpf_attr *attr) return -ENOMEM; log = &env->log; - env->insn_aux_data = vzalloc(sizeof(struct bpf_insn_aux_data) * - (*prog)->len); + env->insn_aux_data = + vzalloc(array_size(sizeof(struct bpf_insn_aux_data), + (*prog)->len)); ret = -ENOMEM; if (!env->insn_aux_data) goto err_free_env; diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 75d8e7cf040e..c6a3b6851372 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -793,7 +793,7 @@ static int kexec_purgatory_setup_sechdrs(struct purgatory_info *pi, * The section headers in kexec_purgatory are read-only. In order to * have them modifiable make a temporary copy. */ - sechdrs = vzalloc(pi->ehdr->e_shnum * sizeof(Elf_Shdr)); + sechdrs = vzalloc(array_size(sizeof(Elf_Shdr), pi->ehdr->e_shnum)); if (!sechdrs) return -ENOMEM; memcpy(sechdrs, (void *)pi->ehdr + pi->ehdr->e_shoff, diff --git a/lib/test_firmware.c b/lib/test_firmware.c index cee000ac54d8..b984806d7d7b 100644 --- a/lib/test_firmware.c +++ b/lib/test_firmware.c @@ -618,8 +618,9 @@ static ssize_t trigger_batched_requests_store(struct device *dev, mutex_lock(&test_fw_mutex); - test_fw_config->reqs = vzalloc(sizeof(struct test_batched_req) * - test_fw_config->num_requests * 2); + test_fw_config->reqs = + vzalloc(array3_size(sizeof(struct test_batched_req), + test_fw_config->num_requests, 2)); if (!test_fw_config->reqs) { rc = -ENOMEM; goto out_unlock; @@ -720,8 +721,9 @@ ssize_t trigger_batched_requests_async_store(struct device *dev, mutex_lock(&test_fw_mutex); - test_fw_config->reqs = vzalloc(sizeof(struct test_batched_req) * - test_fw_config->num_requests * 2); + test_fw_config->reqs = + vzalloc(array3_size(sizeof(struct test_batched_req), + test_fw_config->num_requests, 2)); if (!test_fw_config->reqs) { rc = -ENOMEM; goto out; diff --git a/lib/test_kmod.c b/lib/test_kmod.c index 0e5b7a61460b..e3ddd836491f 100644 --- a/lib/test_kmod.c +++ b/lib/test_kmod.c @@ -779,8 +779,9 @@ static int kmod_config_sync_info(struct kmod_test_device *test_dev) struct test_config *config = &test_dev->config; free_test_dev_info(test_dev); - test_dev->info = vzalloc(config->num_threads * - sizeof(struct kmod_test_device_info)); + test_dev->info = + vzalloc(array_size(sizeof(struct kmod_test_device_info), + config->num_threads)); if (!test_dev->info) return -ENOMEM; diff --git a/lib/test_rhashtable.c b/lib/test_rhashtable.c index f4000c137dbe..fb6968109113 100644 --- a/lib/test_rhashtable.c +++ b/lib/test_rhashtable.c @@ -285,12 +285,14 @@ static int __init test_rhltable(unsigned int entries) if (entries == 0) entries = 1; - rhl_test_objects = vzalloc(sizeof(*rhl_test_objects) * entries); + rhl_test_objects = vzalloc(array_size(entries, + sizeof(*rhl_test_objects))); if (!rhl_test_objects) return -ENOMEM; ret = -ENOMEM; - obj_in_table = vzalloc(BITS_TO_LONGS(entries) * sizeof(unsigned long)); + obj_in_table = vzalloc(array_size(sizeof(unsigned long), + BITS_TO_LONGS(entries))); if (!obj_in_table) goto out_free; @@ -706,7 +708,8 @@ static int __init test_rht_init(void) test_rht_params.max_size = max_size ? : roundup_pow_of_two(entries); test_rht_params.nelem_hint = size; - objs = vzalloc((test_rht_params.max_size + 1) * sizeof(struct test_obj)); + objs = vzalloc(array_size(sizeof(struct test_obj), + test_rht_params.max_size + 1)); if (!objs) return -ENOMEM; @@ -753,10 +756,10 @@ static int __init test_rht_init(void) pr_info("Testing concurrent rhashtable access from %d threads\n", tcount); sema_init(&prestart_sem, 1 - tcount); - tdata = vzalloc(tcount * sizeof(struct thread_data)); + tdata = vzalloc(array_size(tcount, sizeof(struct thread_data))); if (!tdata) return -ENOMEM; - objs = vzalloc(tcount * entries * sizeof(struct test_obj)); + objs = vzalloc(array3_size(sizeof(struct test_obj), tcount, entries)); if (!objs) { vfree(tdata); return -ENOMEM; diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 8be6be2d9c7b..e677a20180cf 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -1852,7 +1852,7 @@ static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) WARN_ON_ONCE(!ret); gstrings.len = ret; - data = vzalloc(gstrings.len * ETH_GSTRING_LEN); + data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); if (gstrings.len && !data) return -ENOMEM; @@ -1952,7 +1952,7 @@ static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) return -EFAULT; stats.n_stats = n_stats; - data = vzalloc(n_stats * sizeof(u64)); + data = vzalloc(array_size(n_stats, sizeof(u64))); if (n_stats && !data) return -ENOMEM; @@ -1996,7 +1996,7 @@ static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) return -EFAULT; stats.n_stats = n_stats; - data = vzalloc(n_stats * sizeof(u64)); + data = vzalloc(array_size(n_stats, sizeof(u64))); if (n_stats && !data) return -ENOMEM; diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index ee018564b2b4..50809748c127 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -4161,7 +4161,7 @@ static char *alloc_one_pg_vec_page(unsigned long order) return buffer; /* __get_free_pages failed, fall back to vmalloc */ - buffer = vzalloc((1 << order) * PAGE_SIZE); + buffer = vzalloc(array_size((1 << order), PAGE_SIZE)); if (buffer) return buffer; -- cgit v1.2.3 From e37460c1ca08cf9d3b82eb3b6f205888d8d01182 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 14 Jun 2018 08:49:34 +0200 Subject: dma-mapping: use obj-y instead of lib-y for generic dma ops We already have exact config symbols to select the direct, non-coherent, or virt dma ops. So use the normal obj- scheme to select them. Signed-off-by: Christoph Hellwig --- lib/Makefile | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'lib') diff --git a/lib/Makefile b/lib/Makefile index 956b320292fe..5e0e160c9242 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -29,9 +29,9 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ lib-$(CONFIG_PRINTK) += dump_stack.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o -lib-$(CONFIG_DMA_DIRECT_OPS) += dma-direct.o -lib-$(CONFIG_DMA_NONCOHERENT_OPS) += dma-noncoherent.o -lib-$(CONFIG_DMA_VIRT_OPS) += dma-virt.o +obj-$(CONFIG_DMA_DIRECT_OPS) += dma-direct.o +obj-$(CONFIG_DMA_NONCOHERENT_OPS) += dma-noncoherent.o +obj-$(CONFIG_DMA_VIRT_OPS) += dma-virt.o lib-y += kobject.o klist.o obj-y += lockref.o -- cgit v1.2.3 From cf65a0f6f6ff7631ba0ac0513a14ca5b65320d80 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 12 Jun 2018 19:01:45 +0200 Subject: dma-mapping: move all DMA mapping code to kernel/dma Currently the code is split over various files with dma- prefixes in the lib/ and drives/base directories, and the number of files keeps growing. Move them into a single directory to keep the code together and remove the file name prefixes. To match the irq infrastructure this directory is placed under the kernel/ directory. Signed-off-by: Christoph Hellwig --- Documentation/driver-api/infrastructure.rst | 4 +- MAINTAINERS | 9 +- drivers/base/Makefile | 3 - drivers/base/dma-coherent.c | 434 ------- drivers/base/dma-contiguous.c | 278 ----- drivers/base/dma-mapping.c | 345 ------ include/linux/dma-contiguous.h | 2 +- init/Kconfig | 4 - kernel/Makefile | 1 + kernel/dma/Kconfig | 50 + kernel/dma/Makefile | 11 + kernel/dma/coherent.c | 434 +++++++ kernel/dma/contiguous.c | 278 +++++ kernel/dma/debug.c | 1773 +++++++++++++++++++++++++++ kernel/dma/direct.c | 204 +++ kernel/dma/mapping.c | 345 ++++++ kernel/dma/noncoherent.c | 102 ++ kernel/dma/swiotlb.c | 1087 ++++++++++++++++ kernel/dma/virt.c | 59 + lib/Kconfig | 47 +- lib/Makefile | 6 - lib/dma-debug.c | 1773 --------------------------- lib/dma-direct.c | 204 --- lib/dma-noncoherent.c | 102 -- lib/dma-virt.c | 61 - lib/swiotlb.c | 1087 ---------------- 26 files changed, 4350 insertions(+), 4353 deletions(-) delete mode 100644 drivers/base/dma-coherent.c delete mode 100644 drivers/base/dma-contiguous.c delete mode 100644 drivers/base/dma-mapping.c create mode 100644 kernel/dma/Kconfig create mode 100644 kernel/dma/Makefile create mode 100644 kernel/dma/coherent.c create mode 100644 kernel/dma/contiguous.c create mode 100644 kernel/dma/debug.c create mode 100644 kernel/dma/direct.c create mode 100644 kernel/dma/mapping.c create mode 100644 kernel/dma/noncoherent.c create mode 100644 kernel/dma/swiotlb.c create mode 100644 kernel/dma/virt.c delete mode 100644 lib/dma-debug.c delete mode 100644 lib/dma-direct.c delete mode 100644 lib/dma-noncoherent.c delete mode 100644 lib/dma-virt.c delete mode 100644 lib/swiotlb.c (limited to 'lib') diff --git a/Documentation/driver-api/infrastructure.rst b/Documentation/driver-api/infrastructure.rst index bee1b9a1702f..6172f3cc3d0b 100644 --- a/Documentation/driver-api/infrastructure.rst +++ b/Documentation/driver-api/infrastructure.rst @@ -49,10 +49,10 @@ Device Drivers Base Device Drivers DMA Management ----------------------------- -.. kernel-doc:: drivers/base/dma-coherent.c +.. kernel-doc:: kernel/dma/coherent.c :export: -.. kernel-doc:: drivers/base/dma-mapping.c +.. kernel-doc:: kernel/dma/mapping.c :export: Device drivers PnP support diff --git a/MAINTAINERS b/MAINTAINERS index c13b9fb3be0b..a6844a9e2f64 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4359,12 +4359,7 @@ L: iommu@lists.linux-foundation.org T: git git://git.infradead.org/users/hch/dma-mapping.git W: http://git.infradead.org/users/hch/dma-mapping.git S: Supported -F: lib/dma-debug.c -F: lib/dma-direct.c -F: lib/dma-noncoherent.c -F: lib/dma-virt.c -F: drivers/base/dma-mapping.c -F: drivers/base/dma-coherent.c +F: kernel/dma/ F: include/asm-generic/dma-mapping.h F: include/linux/dma-direct.h F: include/linux/dma-mapping.h @@ -13642,7 +13637,7 @@ M: Konrad Rzeszutek Wilk L: iommu@lists.linux-foundation.org T: git git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb.git S: Supported -F: lib/swiotlb.c +F: kernel/dma/swiotlb.c F: arch/*/kernel/pci-swiotlb.c F: include/linux/swiotlb.h diff --git a/drivers/base/Makefile b/drivers/base/Makefile index b074f242a435..704f44295810 100644 --- a/drivers/base/Makefile +++ b/drivers/base/Makefile @@ -8,10 +8,7 @@ obj-y := component.o core.o bus.o dd.o syscore.o \ topology.o container.o property.o cacheinfo.o \ devcon.o obj-$(CONFIG_DEVTMPFS) += devtmpfs.o -obj-$(CONFIG_DMA_CMA) += dma-contiguous.o obj-y += power/ -obj-$(CONFIG_HAS_DMA) += dma-mapping.o -obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o obj-$(CONFIG_ISA_BUS_API) += isa.o obj-y += firmware_loader/ obj-$(CONFIG_NUMA) += node.o diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c deleted file mode 100644 index 597d40893862..000000000000 --- a/drivers/base/dma-coherent.c +++ /dev/null @@ -1,434 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Coherent per-device memory handling. - * Borrowed from i386 - */ -#include -#include -#include -#include -#include - -struct dma_coherent_mem { - void *virt_base; - dma_addr_t device_base; - unsigned long pfn_base; - int size; - int flags; - unsigned long *bitmap; - spinlock_t spinlock; - bool use_dev_dma_pfn_offset; -}; - -static struct dma_coherent_mem *dma_coherent_default_memory __ro_after_init; - -static inline struct dma_coherent_mem *dev_get_coherent_memory(struct device *dev) -{ - if (dev && dev->dma_mem) - return dev->dma_mem; - return NULL; -} - -static inline dma_addr_t dma_get_device_base(struct device *dev, - struct dma_coherent_mem * mem) -{ - if (mem->use_dev_dma_pfn_offset) - return (mem->pfn_base - dev->dma_pfn_offset) << PAGE_SHIFT; - else - return mem->device_base; -} - -static int dma_init_coherent_memory( - phys_addr_t phys_addr, dma_addr_t device_addr, size_t size, int flags, - struct dma_coherent_mem **mem) -{ - struct dma_coherent_mem *dma_mem = NULL; - void __iomem *mem_base = NULL; - int pages = size >> PAGE_SHIFT; - int bitmap_size = BITS_TO_LONGS(pages) * sizeof(long); - int ret; - - if (!size) { - ret = -EINVAL; - goto out; - } - - mem_base = memremap(phys_addr, size, MEMREMAP_WC); - if (!mem_base) { - ret = -EINVAL; - goto out; - } - dma_mem = kzalloc(sizeof(struct dma_coherent_mem), GFP_KERNEL); - if (!dma_mem) { - ret = -ENOMEM; - goto out; - } - dma_mem->bitmap = kzalloc(bitmap_size, GFP_KERNEL); - if (!dma_mem->bitmap) { - ret = -ENOMEM; - goto out; - } - - dma_mem->virt_base = mem_base; - dma_mem->device_base = device_addr; - dma_mem->pfn_base = PFN_DOWN(phys_addr); - dma_mem->size = pages; - dma_mem->flags = flags; - spin_lock_init(&dma_mem->spinlock); - - *mem = dma_mem; - return 0; - -out: - kfree(dma_mem); - if (mem_base) - memunmap(mem_base); - return ret; -} - -static void dma_release_coherent_memory(struct dma_coherent_mem *mem) -{ - if (!mem) - return; - - memunmap(mem->virt_base); - kfree(mem->bitmap); - kfree(mem); -} - -static int dma_assign_coherent_memory(struct device *dev, - struct dma_coherent_mem *mem) -{ - if (!dev) - return -ENODEV; - - if (dev->dma_mem) - return -EBUSY; - - dev->dma_mem = mem; - return 0; -} - -int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, - dma_addr_t device_addr, size_t size, int flags) -{ - struct dma_coherent_mem *mem; - int ret; - - ret = dma_init_coherent_memory(phys_addr, device_addr, size, flags, &mem); - if (ret) - return ret; - - ret = dma_assign_coherent_memory(dev, mem); - if (ret) - dma_release_coherent_memory(mem); - return ret; -} -EXPORT_SYMBOL(dma_declare_coherent_memory); - -void dma_release_declared_memory(struct device *dev) -{ - struct dma_coherent_mem *mem = dev->dma_mem; - - if (!mem) - return; - dma_release_coherent_memory(mem); - dev->dma_mem = NULL; -} -EXPORT_SYMBOL(dma_release_declared_memory); - -void *dma_mark_declared_memory_occupied(struct device *dev, - dma_addr_t device_addr, size_t size) -{ - struct dma_coherent_mem *mem = dev->dma_mem; - unsigned long flags; - int pos, err; - - size += device_addr & ~PAGE_MASK; - - if (!mem) - return ERR_PTR(-EINVAL); - - spin_lock_irqsave(&mem->spinlock, flags); - pos = PFN_DOWN(device_addr - dma_get_device_base(dev, mem)); - err = bitmap_allocate_region(mem->bitmap, pos, get_order(size)); - spin_unlock_irqrestore(&mem->spinlock, flags); - - if (err != 0) - return ERR_PTR(err); - return mem->virt_base + (pos << PAGE_SHIFT); -} -EXPORT_SYMBOL(dma_mark_declared_memory_occupied); - -static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem, - ssize_t size, dma_addr_t *dma_handle) -{ - int order = get_order(size); - unsigned long flags; - int pageno; - void *ret; - - spin_lock_irqsave(&mem->spinlock, flags); - - if (unlikely(size > (mem->size << PAGE_SHIFT))) - goto err; - - pageno = bitmap_find_free_region(mem->bitmap, mem->size, order); - if (unlikely(pageno < 0)) - goto err; - - /* - * Memory was found in the coherent area. - */ - *dma_handle = mem->device_base + (pageno << PAGE_SHIFT); - ret = mem->virt_base + (pageno << PAGE_SHIFT); - spin_unlock_irqrestore(&mem->spinlock, flags); - memset(ret, 0, size); - return ret; -err: - spin_unlock_irqrestore(&mem->spinlock, flags); - return NULL; -} - -/** - * dma_alloc_from_dev_coherent() - allocate memory from device coherent pool - * @dev: device from which we allocate memory - * @size: size of requested memory area - * @dma_handle: This will be filled with the correct dma handle - * @ret: This pointer will be filled with the virtual address - * to allocated area. - * - * This function should be only called from per-arch dma_alloc_coherent() - * to support allocation from per-device coherent memory pools. - * - * Returns 0 if dma_alloc_coherent should continue with allocating from - * generic memory areas, or !0 if dma_alloc_coherent should return @ret. - */ -int dma_alloc_from_dev_coherent(struct device *dev, ssize_t size, - dma_addr_t *dma_handle, void **ret) -{ - struct dma_coherent_mem *mem = dev_get_coherent_memory(dev); - - if (!mem) - return 0; - - *ret = __dma_alloc_from_coherent(mem, size, dma_handle); - if (*ret) - return 1; - - /* - * In the case where the allocation can not be satisfied from the - * per-device area, try to fall back to generic memory if the - * constraints allow it. - */ - return mem->flags & DMA_MEMORY_EXCLUSIVE; -} -EXPORT_SYMBOL(dma_alloc_from_dev_coherent); - -void *dma_alloc_from_global_coherent(ssize_t size, dma_addr_t *dma_handle) -{ - if (!dma_coherent_default_memory) - return NULL; - - return __dma_alloc_from_coherent(dma_coherent_default_memory, size, - dma_handle); -} - -static int __dma_release_from_coherent(struct dma_coherent_mem *mem, - int order, void *vaddr) -{ - if (mem && vaddr >= mem->virt_base && vaddr < - (mem->virt_base + (mem->size << PAGE_SHIFT))) { - int page = (vaddr - mem->virt_base) >> PAGE_SHIFT; - unsigned long flags; - - spin_lock_irqsave(&mem->spinlock, flags); - bitmap_release_region(mem->bitmap, page, order); - spin_unlock_irqrestore(&mem->spinlock, flags); - return 1; - } - return 0; -} - -/** - * dma_release_from_dev_coherent() - free memory to device coherent memory pool - * @dev: device from which the memory was allocated - * @order: the order of pages allocated - * @vaddr: virtual address of allocated pages - * - * This checks whether the memory was allocated from the per-device - * coherent memory pool and if so, releases that memory. - * - * Returns 1 if we correctly released the memory, or 0 if the caller should - * proceed with releasing memory from generic pools. - */ -int dma_release_from_dev_coherent(struct device *dev, int order, void *vaddr) -{ - struct dma_coherent_mem *mem = dev_get_coherent_memory(dev); - - return __dma_release_from_coherent(mem, order, vaddr); -} -EXPORT_SYMBOL(dma_release_from_dev_coherent); - -int dma_release_from_global_coherent(int order, void *vaddr) -{ - if (!dma_coherent_default_memory) - return 0; - - return __dma_release_from_coherent(dma_coherent_default_memory, order, - vaddr); -} - -static int __dma_mmap_from_coherent(struct dma_coherent_mem *mem, - struct vm_area_struct *vma, void *vaddr, size_t size, int *ret) -{ - if (mem && vaddr >= mem->virt_base && vaddr + size <= - (mem->virt_base + (mem->size << PAGE_SHIFT))) { - unsigned long off = vma->vm_pgoff; - int start = (vaddr - mem->virt_base) >> PAGE_SHIFT; - int user_count = vma_pages(vma); - int count = PAGE_ALIGN(size) >> PAGE_SHIFT; - - *ret = -ENXIO; - if (off < count && user_count <= count - off) { - unsigned long pfn = mem->pfn_base + start + off; - *ret = remap_pfn_range(vma, vma->vm_start, pfn, - user_count << PAGE_SHIFT, - vma->vm_page_prot); - } - return 1; - } - return 0; -} - -/** - * dma_mmap_from_dev_coherent() - mmap memory from the device coherent pool - * @dev: device from which the memory was allocated - * @vma: vm_area for the userspace memory - * @vaddr: cpu address returned by dma_alloc_from_dev_coherent - * @size: size of the memory buffer allocated - * @ret: result from remap_pfn_range() - * - * This checks whether the memory was allocated from the per-device - * coherent memory pool and if so, maps that memory to the provided vma. - * - * Returns 1 if @vaddr belongs to the device coherent pool and the caller - * should return @ret, or 0 if they should proceed with mapping memory from - * generic areas. - */ -int dma_mmap_from_dev_coherent(struct device *dev, struct vm_area_struct *vma, - void *vaddr, size_t size, int *ret) -{ - struct dma_coherent_mem *mem = dev_get_coherent_memory(dev); - - return __dma_mmap_from_coherent(mem, vma, vaddr, size, ret); -} -EXPORT_SYMBOL(dma_mmap_from_dev_coherent); - -int dma_mmap_from_global_coherent(struct vm_area_struct *vma, void *vaddr, - size_t size, int *ret) -{ - if (!dma_coherent_default_memory) - return 0; - - return __dma_mmap_from_coherent(dma_coherent_default_memory, vma, - vaddr, size, ret); -} - -/* - * Support for reserved memory regions defined in device tree - */ -#ifdef CONFIG_OF_RESERVED_MEM -#include -#include -#include - -static struct reserved_mem *dma_reserved_default_memory __initdata; - -static int rmem_dma_device_init(struct reserved_mem *rmem, struct device *dev) -{ - struct dma_coherent_mem *mem = rmem->priv; - int ret; - - if (!mem) { - ret = dma_init_coherent_memory(rmem->base, rmem->base, - rmem->size, - DMA_MEMORY_EXCLUSIVE, &mem); - if (ret) { - pr_err("Reserved memory: failed to init DMA memory pool at %pa, size %ld MiB\n", - &rmem->base, (unsigned long)rmem->size / SZ_1M); - return ret; - } - } - mem->use_dev_dma_pfn_offset = true; - rmem->priv = mem; - dma_assign_coherent_memory(dev, mem); - return 0; -} - -static void rmem_dma_device_release(struct reserved_mem *rmem, - struct device *dev) -{ - if (dev) - dev->dma_mem = NULL; -} - -static const struct reserved_mem_ops rmem_dma_ops = { - .device_init = rmem_dma_device_init, - .device_release = rmem_dma_device_release, -}; - -static int __init rmem_dma_setup(struct reserved_mem *rmem) -{ - unsigned long node = rmem->fdt_node; - - if (of_get_flat_dt_prop(node, "reusable", NULL)) - return -EINVAL; - -#ifdef CONFIG_ARM - if (!of_get_flat_dt_prop(node, "no-map", NULL)) { - pr_err("Reserved memory: regions without no-map are not yet supported\n"); - return -EINVAL; - } - - if (of_get_flat_dt_prop(node, "linux,dma-default", NULL)) { - WARN(dma_reserved_default_memory, - "Reserved memory: region for default DMA coherent area is redefined\n"); - dma_reserved_default_memory = rmem; - } -#endif - - rmem->ops = &rmem_dma_ops; - pr_info("Reserved memory: created DMA memory pool at %pa, size %ld MiB\n", - &rmem->base, (unsigned long)rmem->size / SZ_1M); - return 0; -} - -static int __init dma_init_reserved_memory(void) -{ - const struct reserved_mem_ops *ops; - int ret; - - if (!dma_reserved_default_memory) - return -ENOMEM; - - ops = dma_reserved_default_memory->ops; - - /* - * We rely on rmem_dma_device_init() does not propagate error of - * dma_assign_coherent_memory() for "NULL" device. - */ - ret = ops->device_init(dma_reserved_default_memory, NULL); - - if (!ret) { - dma_coherent_default_memory = dma_reserved_default_memory->priv; - pr_info("DMA: default coherent area is set\n"); - } - - return ret; -} - -core_initcall(dma_init_reserved_memory); - -RESERVEDMEM_OF_DECLARE(dma, "shared-dma-pool", rmem_dma_setup); -#endif diff --git a/drivers/base/dma-contiguous.c b/drivers/base/dma-contiguous.c deleted file mode 100644 index d987dcd1bd56..000000000000 --- a/drivers/base/dma-contiguous.c +++ /dev/null @@ -1,278 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Contiguous Memory Allocator for DMA mapping framework - * Copyright (c) 2010-2011 by Samsung Electronics. - * Written by: - * Marek Szyprowski - * Michal Nazarewicz - */ - -#define pr_fmt(fmt) "cma: " fmt - -#ifdef CONFIG_CMA_DEBUG -#ifndef DEBUG -# define DEBUG -#endif -#endif - -#include -#include - -#include -#include -#include -#include -#include - -#ifdef CONFIG_CMA_SIZE_MBYTES -#define CMA_SIZE_MBYTES CONFIG_CMA_SIZE_MBYTES -#else -#define CMA_SIZE_MBYTES 0 -#endif - -struct cma *dma_contiguous_default_area; - -/* - * Default global CMA area size can be defined in kernel's .config. - * This is useful mainly for distro maintainers to create a kernel - * that works correctly for most supported systems. - * The size can be set in bytes or as a percentage of the total memory - * in the system. - * - * Users, who want to set the size of global CMA area for their system - * should use cma= kernel parameter. - */ -static const phys_addr_t size_bytes = (phys_addr_t)CMA_SIZE_MBYTES * SZ_1M; -static phys_addr_t size_cmdline = -1; -static phys_addr_t base_cmdline; -static phys_addr_t limit_cmdline; - -static int __init early_cma(char *p) -{ - pr_debug("%s(%s)\n", __func__, p); - size_cmdline = memparse(p, &p); - if (*p != '@') - return 0; - base_cmdline = memparse(p + 1, &p); - if (*p != '-') { - limit_cmdline = base_cmdline + size_cmdline; - return 0; - } - limit_cmdline = memparse(p + 1, &p); - - return 0; -} -early_param("cma", early_cma); - -#ifdef CONFIG_CMA_SIZE_PERCENTAGE - -static phys_addr_t __init __maybe_unused cma_early_percent_memory(void) -{ - struct memblock_region *reg; - unsigned long total_pages = 0; - - /* - * We cannot use memblock_phys_mem_size() here, because - * memblock_analyze() has not been called yet. - */ - for_each_memblock(memory, reg) - total_pages += memblock_region_memory_end_pfn(reg) - - memblock_region_memory_base_pfn(reg); - - return (total_pages * CONFIG_CMA_SIZE_PERCENTAGE / 100) << PAGE_SHIFT; -} - -#else - -static inline __maybe_unused phys_addr_t cma_early_percent_memory(void) -{ - return 0; -} - -#endif - -/** - * dma_contiguous_reserve() - reserve area(s) for contiguous memory handling - * @limit: End address of the reserved memory (optional, 0 for any). - * - * This function reserves memory from early allocator. It should be - * called by arch specific code once the early allocator (memblock or bootmem) - * has been activated and all other subsystems have already allocated/reserved - * memory. - */ -void __init dma_contiguous_reserve(phys_addr_t limit) -{ - phys_addr_t selected_size = 0; - phys_addr_t selected_base = 0; - phys_addr_t selected_limit = limit; - bool fixed = false; - - pr_debug("%s(limit %08lx)\n", __func__, (unsigned long)limit); - - if (size_cmdline != -1) { - selected_size = size_cmdline; - selected_base = base_cmdline; - selected_limit = min_not_zero(limit_cmdline, limit); - if (base_cmdline + size_cmdline == limit_cmdline) - fixed = true; - } else { -#ifdef CONFIG_CMA_SIZE_SEL_MBYTES - selected_size = size_bytes; -#elif defined(CONFIG_CMA_SIZE_SEL_PERCENTAGE) - selected_size = cma_early_percent_memory(); -#elif defined(CONFIG_CMA_SIZE_SEL_MIN) - selected_size = min(size_bytes, cma_early_percent_memory()); -#elif defined(CONFIG_CMA_SIZE_SEL_MAX) - selected_size = max(size_bytes, cma_early_percent_memory()); -#endif - } - - if (selected_size && !dma_contiguous_default_area) { - pr_debug("%s: reserving %ld MiB for global area\n", __func__, - (unsigned long)selected_size / SZ_1M); - - dma_contiguous_reserve_area(selected_size, selected_base, - selected_limit, - &dma_contiguous_default_area, - fixed); - } -} - -/** - * dma_contiguous_reserve_area() - reserve custom contiguous area - * @size: Size of the reserved area (in bytes), - * @base: Base address of the reserved area optional, use 0 for any - * @limit: End address of the reserved memory (optional, 0 for any). - * @res_cma: Pointer to store the created cma region. - * @fixed: hint about where to place the reserved area - * - * This function reserves memory from early allocator. It should be - * called by arch specific code once the early allocator (memblock or bootmem) - * has been activated and all other subsystems have already allocated/reserved - * memory. This function allows to create custom reserved areas for specific - * devices. - * - * If @fixed is true, reserve contiguous area at exactly @base. If false, - * reserve in range from @base to @limit. - */ -int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base, - phys_addr_t limit, struct cma **res_cma, - bool fixed) -{ - int ret; - - ret = cma_declare_contiguous(base, size, limit, 0, 0, fixed, - "reserved", res_cma); - if (ret) - return ret; - - /* Architecture specific contiguous memory fixup. */ - dma_contiguous_early_fixup(cma_get_base(*res_cma), - cma_get_size(*res_cma)); - - return 0; -} - -/** - * dma_alloc_from_contiguous() - allocate pages from contiguous area - * @dev: Pointer to device for which the allocation is performed. - * @count: Requested number of pages. - * @align: Requested alignment of pages (in PAGE_SIZE order). - * @gfp_mask: GFP flags to use for this allocation. - * - * This function allocates memory buffer for specified device. It uses - * device specific contiguous memory area if available or the default - * global one. Requires architecture specific dev_get_cma_area() helper - * function. - */ -struct page *dma_alloc_from_contiguous(struct device *dev, size_t count, - unsigned int align, gfp_t gfp_mask) -{ - if (align > CONFIG_CMA_ALIGNMENT) - align = CONFIG_CMA_ALIGNMENT; - - return cma_alloc(dev_get_cma_area(dev), count, align, gfp_mask); -} - -/** - * dma_release_from_contiguous() - release allocated pages - * @dev: Pointer to device for which the pages were allocated. - * @pages: Allocated pages. - * @count: Number of allocated pages. - * - * This function releases memory allocated by dma_alloc_from_contiguous(). - * It returns false when provided pages do not belong to contiguous area and - * true otherwise. - */ -bool dma_release_from_contiguous(struct device *dev, struct page *pages, - int count) -{ - return cma_release(dev_get_cma_area(dev), pages, count); -} - -/* - * Support for reserved memory regions defined in device tree - */ -#ifdef CONFIG_OF_RESERVED_MEM -#include -#include -#include - -#undef pr_fmt -#define pr_fmt(fmt) fmt - -static int rmem_cma_device_init(struct reserved_mem *rmem, struct device *dev) -{ - dev_set_cma_area(dev, rmem->priv); - return 0; -} - -static void rmem_cma_device_release(struct reserved_mem *rmem, - struct device *dev) -{ - dev_set_cma_area(dev, NULL); -} - -static const struct reserved_mem_ops rmem_cma_ops = { - .device_init = rmem_cma_device_init, - .device_release = rmem_cma_device_release, -}; - -static int __init rmem_cma_setup(struct reserved_mem *rmem) -{ - phys_addr_t align = PAGE_SIZE << max(MAX_ORDER - 1, pageblock_order); - phys_addr_t mask = align - 1; - unsigned long node = rmem->fdt_node; - struct cma *cma; - int err; - - if (!of_get_flat_dt_prop(node, "reusable", NULL) || - of_get_flat_dt_prop(node, "no-map", NULL)) - return -EINVAL; - - if ((rmem->base & mask) || (rmem->size & mask)) { - pr_err("Reserved memory: incorrect alignment of CMA region\n"); - return -EINVAL; - } - - err = cma_init_reserved_mem(rmem->base, rmem->size, 0, rmem->name, &cma); - if (err) { - pr_err("Reserved memory: unable to setup CMA region\n"); - return err; - } - /* Architecture specific contiguous memory fixup. */ - dma_contiguous_early_fixup(rmem->base, rmem->size); - - if (of_get_flat_dt_prop(node, "linux,cma-default", NULL)) - dma_contiguous_set_default(cma); - - rmem->ops = &rmem_cma_ops; - rmem->priv = cma; - - pr_info("Reserved memory: created CMA memory pool at %pa, size %ld MiB\n", - &rmem->base, (unsigned long)rmem->size / SZ_1M); - - return 0; -} -RESERVEDMEM_OF_DECLARE(cma, "shared-dma-pool", rmem_cma_setup); -#endif diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c deleted file mode 100644 index f831a582209c..000000000000 --- a/drivers/base/dma-mapping.c +++ /dev/null @@ -1,345 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * drivers/base/dma-mapping.c - arch-independent dma-mapping routines - * - * Copyright (c) 2006 SUSE Linux Products GmbH - * Copyright (c) 2006 Tejun Heo - */ - -#include -#include -#include -#include -#include -#include -#include - -/* - * Managed DMA API - */ -struct dma_devres { - size_t size; - void *vaddr; - dma_addr_t dma_handle; - unsigned long attrs; -}; - -static void dmam_release(struct device *dev, void *res) -{ - struct dma_devres *this = res; - - dma_free_attrs(dev, this->size, this->vaddr, this->dma_handle, - this->attrs); -} - -static int dmam_match(struct device *dev, void *res, void *match_data) -{ - struct dma_devres *this = res, *match = match_data; - - if (this->vaddr == match->vaddr) { - WARN_ON(this->size != match->size || - this->dma_handle != match->dma_handle); - return 1; - } - return 0; -} - -/** - * dmam_alloc_coherent - Managed dma_alloc_coherent() - * @dev: Device to allocate coherent memory for - * @size: Size of allocation - * @dma_handle: Out argument for allocated DMA handle - * @gfp: Allocation flags - * - * Managed dma_alloc_coherent(). Memory allocated using this function - * will be automatically released on driver detach. - * - * RETURNS: - * Pointer to allocated memory on success, NULL on failure. - */ -void *dmam_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) -{ - struct dma_devres *dr; - void *vaddr; - - dr = devres_alloc(dmam_release, sizeof(*dr), gfp); - if (!dr) - return NULL; - - vaddr = dma_alloc_coherent(dev, size, dma_handle, gfp); - if (!vaddr) { - devres_free(dr); - return NULL; - } - - dr->vaddr = vaddr; - dr->dma_handle = *dma_handle; - dr->size = size; - - devres_add(dev, dr); - - return vaddr; -} -EXPORT_SYMBOL(dmam_alloc_coherent); - -/** - * dmam_free_coherent - Managed dma_free_coherent() - * @dev: Device to free coherent memory for - * @size: Size of allocation - * @vaddr: Virtual address of the memory to free - * @dma_handle: DMA handle of the memory to free - * - * Managed dma_free_coherent(). - */ -void dmam_free_coherent(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_handle) -{ - struct dma_devres match_data = { size, vaddr, dma_handle }; - - dma_free_coherent(dev, size, vaddr, dma_handle); - WARN_ON(devres_destroy(dev, dmam_release, dmam_match, &match_data)); -} -EXPORT_SYMBOL(dmam_free_coherent); - -/** - * dmam_alloc_attrs - Managed dma_alloc_attrs() - * @dev: Device to allocate non_coherent memory for - * @size: Size of allocation - * @dma_handle: Out argument for allocated DMA handle - * @gfp: Allocation flags - * @attrs: Flags in the DMA_ATTR_* namespace. - * - * Managed dma_alloc_attrs(). Memory allocated using this function will be - * automatically released on driver detach. - * - * RETURNS: - * Pointer to allocated memory on success, NULL on failure. - */ -void *dmam_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t gfp, unsigned long attrs) -{ - struct dma_devres *dr; - void *vaddr; - - dr = devres_alloc(dmam_release, sizeof(*dr), gfp); - if (!dr) - return NULL; - - vaddr = dma_alloc_attrs(dev, size, dma_handle, gfp, attrs); - if (!vaddr) { - devres_free(dr); - return NULL; - } - - dr->vaddr = vaddr; - dr->dma_handle = *dma_handle; - dr->size = size; - dr->attrs = attrs; - - devres_add(dev, dr); - - return vaddr; -} -EXPORT_SYMBOL(dmam_alloc_attrs); - -#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT - -static void dmam_coherent_decl_release(struct device *dev, void *res) -{ - dma_release_declared_memory(dev); -} - -/** - * dmam_declare_coherent_memory - Managed dma_declare_coherent_memory() - * @dev: Device to declare coherent memory for - * @phys_addr: Physical address of coherent memory to be declared - * @device_addr: Device address of coherent memory to be declared - * @size: Size of coherent memory to be declared - * @flags: Flags - * - * Managed dma_declare_coherent_memory(). - * - * RETURNS: - * 0 on success, -errno on failure. - */ -int dmam_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, - dma_addr_t device_addr, size_t size, int flags) -{ - void *res; - int rc; - - res = devres_alloc(dmam_coherent_decl_release, 0, GFP_KERNEL); - if (!res) - return -ENOMEM; - - rc = dma_declare_coherent_memory(dev, phys_addr, device_addr, size, - flags); - if (!rc) - devres_add(dev, res); - else - devres_free(res); - - return rc; -} -EXPORT_SYMBOL(dmam_declare_coherent_memory); - -/** - * dmam_release_declared_memory - Managed dma_release_declared_memory(). - * @dev: Device to release declared coherent memory for - * - * Managed dmam_release_declared_memory(). - */ -void dmam_release_declared_memory(struct device *dev) -{ - WARN_ON(devres_destroy(dev, dmam_coherent_decl_release, NULL, NULL)); -} -EXPORT_SYMBOL(dmam_release_declared_memory); - -#endif - -/* - * Create scatter-list for the already allocated DMA buffer. - */ -int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t handle, size_t size) -{ - struct page *page = virt_to_page(cpu_addr); - int ret; - - ret = sg_alloc_table(sgt, 1, GFP_KERNEL); - if (unlikely(ret)) - return ret; - - sg_set_page(sgt->sgl, page, PAGE_ALIGN(size), 0); - return 0; -} -EXPORT_SYMBOL(dma_common_get_sgtable); - -/* - * Create userspace mapping for the DMA-coherent memory. - */ -int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, - void *cpu_addr, dma_addr_t dma_addr, size_t size) -{ - int ret = -ENXIO; -#ifndef CONFIG_ARCH_NO_COHERENT_DMA_MMAP - unsigned long user_count = vma_pages(vma); - unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT; - unsigned long off = vma->vm_pgoff; - - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - - if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret)) - return ret; - - if (off < count && user_count <= (count - off)) - ret = remap_pfn_range(vma, vma->vm_start, - page_to_pfn(virt_to_page(cpu_addr)) + off, - user_count << PAGE_SHIFT, - vma->vm_page_prot); -#endif /* !CONFIG_ARCH_NO_COHERENT_DMA_MMAP */ - - return ret; -} -EXPORT_SYMBOL(dma_common_mmap); - -#ifdef CONFIG_MMU -static struct vm_struct *__dma_common_pages_remap(struct page **pages, - size_t size, unsigned long vm_flags, pgprot_t prot, - const void *caller) -{ - struct vm_struct *area; - - area = get_vm_area_caller(size, vm_flags, caller); - if (!area) - return NULL; - - if (map_vm_area(area, prot, pages)) { - vunmap(area->addr); - return NULL; - } - - return area; -} - -/* - * remaps an array of PAGE_SIZE pages into another vm_area - * Cannot be used in non-sleeping contexts - */ -void *dma_common_pages_remap(struct page **pages, size_t size, - unsigned long vm_flags, pgprot_t prot, - const void *caller) -{ - struct vm_struct *area; - - area = __dma_common_pages_remap(pages, size, vm_flags, prot, caller); - if (!area) - return NULL; - - area->pages = pages; - - return area->addr; -} - -/* - * remaps an allocated contiguous region into another vm_area. - * Cannot be used in non-sleeping contexts - */ - -void *dma_common_contiguous_remap(struct page *page, size_t size, - unsigned long vm_flags, - pgprot_t prot, const void *caller) -{ - int i; - struct page **pages; - struct vm_struct *area; - - pages = kmalloc(sizeof(struct page *) << get_order(size), GFP_KERNEL); - if (!pages) - return NULL; - - for (i = 0; i < (size >> PAGE_SHIFT); i++) - pages[i] = nth_page(page, i); - - area = __dma_common_pages_remap(pages, size, vm_flags, prot, caller); - - kfree(pages); - - if (!area) - return NULL; - return area->addr; -} - -/* - * unmaps a range previously mapped by dma_common_*_remap - */ -void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags) -{ - struct vm_struct *area = find_vm_area(cpu_addr); - - if (!area || (area->flags & vm_flags) != vm_flags) { - WARN(1, "trying to free invalid coherent area: %p\n", cpu_addr); - return; - } - - unmap_kernel_range((unsigned long)cpu_addr, PAGE_ALIGN(size)); - vunmap(cpu_addr); -} -#endif - -/* - * enables DMA API use for a device - */ -int dma_configure(struct device *dev) -{ - if (dev->bus->dma_configure) - return dev->bus->dma_configure(dev); - return 0; -} - -void dma_deconfigure(struct device *dev) -{ - of_dma_deconfigure(dev); - acpi_dma_deconfigure(dev); -} diff --git a/include/linux/dma-contiguous.h b/include/linux/dma-contiguous.h index b67bf6ac907d..3c5a4cb3eb95 100644 --- a/include/linux/dma-contiguous.h +++ b/include/linux/dma-contiguous.h @@ -48,7 +48,7 @@ * CMA should not be used by the device drivers directly. It is * only a helper framework for dma-mapping subsystem. * - * For more information, see kernel-docs in drivers/base/dma-contiguous.c + * For more information, see kernel-docs in kernel/dma/contiguous.c */ #ifdef __KERNEL__ diff --git a/init/Kconfig b/init/Kconfig index 5a52f07259a2..fde3d09e8b27 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1719,10 +1719,6 @@ source "arch/Kconfig" endmenu # General setup -config HAVE_GENERIC_DMA_COHERENT - bool - default n - config RT_MUTEXES bool diff --git a/kernel/Makefile b/kernel/Makefile index d2001624fe7a..04bc07c2b42a 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -41,6 +41,7 @@ obj-y += printk/ obj-y += irq/ obj-y += rcu/ obj-y += livepatch/ +obj-y += dma/ obj-$(CONFIG_CHECKPOINT_RESTORE) += kcmp.o obj-$(CONFIG_FREEZER) += freezer.o diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig new file mode 100644 index 000000000000..9bd54304446f --- /dev/null +++ b/kernel/dma/Kconfig @@ -0,0 +1,50 @@ + +config HAS_DMA + bool + depends on !NO_DMA + default y + +config NEED_SG_DMA_LENGTH + bool + +config NEED_DMA_MAP_STATE + bool + +config ARCH_DMA_ADDR_T_64BIT + def_bool 64BIT || PHYS_ADDR_T_64BIT + +config HAVE_GENERIC_DMA_COHERENT + bool + +config ARCH_HAS_SYNC_DMA_FOR_DEVICE + bool + +config ARCH_HAS_SYNC_DMA_FOR_CPU + bool + select NEED_DMA_MAP_STATE + +config DMA_DIRECT_OPS + bool + depends on HAS_DMA + +config DMA_NONCOHERENT_OPS + bool + depends on HAS_DMA + select DMA_DIRECT_OPS + +config DMA_NONCOHERENT_MMAP + bool + depends on DMA_NONCOHERENT_OPS + +config DMA_NONCOHERENT_CACHE_SYNC + bool + depends on DMA_NONCOHERENT_OPS + +config DMA_VIRT_OPS + bool + depends on HAS_DMA + +config SWIOTLB + bool + select DMA_DIRECT_OPS + select NEED_DMA_MAP_STATE diff --git a/kernel/dma/Makefile b/kernel/dma/Makefile new file mode 100644 index 000000000000..6de44e4eb454 --- /dev/null +++ b/kernel/dma/Makefile @@ -0,0 +1,11 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_HAS_DMA) += mapping.o +obj-$(CONFIG_DMA_CMA) += contiguous.o +obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += coherent.o +obj-$(CONFIG_DMA_DIRECT_OPS) += direct.o +obj-$(CONFIG_DMA_NONCOHERENT_OPS) += noncoherent.o +obj-$(CONFIG_DMA_VIRT_OPS) += virt.o +obj-$(CONFIG_DMA_API_DEBUG) += debug.o +obj-$(CONFIG_SWIOTLB) += swiotlb.o + diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c new file mode 100644 index 000000000000..597d40893862 --- /dev/null +++ b/kernel/dma/coherent.c @@ -0,0 +1,434 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Coherent per-device memory handling. + * Borrowed from i386 + */ +#include +#include +#include +#include +#include + +struct dma_coherent_mem { + void *virt_base; + dma_addr_t device_base; + unsigned long pfn_base; + int size; + int flags; + unsigned long *bitmap; + spinlock_t spinlock; + bool use_dev_dma_pfn_offset; +}; + +static struct dma_coherent_mem *dma_coherent_default_memory __ro_after_init; + +static inline struct dma_coherent_mem *dev_get_coherent_memory(struct device *dev) +{ + if (dev && dev->dma_mem) + return dev->dma_mem; + return NULL; +} + +static inline dma_addr_t dma_get_device_base(struct device *dev, + struct dma_coherent_mem * mem) +{ + if (mem->use_dev_dma_pfn_offset) + return (mem->pfn_base - dev->dma_pfn_offset) << PAGE_SHIFT; + else + return mem->device_base; +} + +static int dma_init_coherent_memory( + phys_addr_t phys_addr, dma_addr_t device_addr, size_t size, int flags, + struct dma_coherent_mem **mem) +{ + struct dma_coherent_mem *dma_mem = NULL; + void __iomem *mem_base = NULL; + int pages = size >> PAGE_SHIFT; + int bitmap_size = BITS_TO_LONGS(pages) * sizeof(long); + int ret; + + if (!size) { + ret = -EINVAL; + goto out; + } + + mem_base = memremap(phys_addr, size, MEMREMAP_WC); + if (!mem_base) { + ret = -EINVAL; + goto out; + } + dma_mem = kzalloc(sizeof(struct dma_coherent_mem), GFP_KERNEL); + if (!dma_mem) { + ret = -ENOMEM; + goto out; + } + dma_mem->bitmap = kzalloc(bitmap_size, GFP_KERNEL); + if (!dma_mem->bitmap) { + ret = -ENOMEM; + goto out; + } + + dma_mem->virt_base = mem_base; + dma_mem->device_base = device_addr; + dma_mem->pfn_base = PFN_DOWN(phys_addr); + dma_mem->size = pages; + dma_mem->flags = flags; + spin_lock_init(&dma_mem->spinlock); + + *mem = dma_mem; + return 0; + +out: + kfree(dma_mem); + if (mem_base) + memunmap(mem_base); + return ret; +} + +static void dma_release_coherent_memory(struct dma_coherent_mem *mem) +{ + if (!mem) + return; + + memunmap(mem->virt_base); + kfree(mem->bitmap); + kfree(mem); +} + +static int dma_assign_coherent_memory(struct device *dev, + struct dma_coherent_mem *mem) +{ + if (!dev) + return -ENODEV; + + if (dev->dma_mem) + return -EBUSY; + + dev->dma_mem = mem; + return 0; +} + +int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, + dma_addr_t device_addr, size_t size, int flags) +{ + struct dma_coherent_mem *mem; + int ret; + + ret = dma_init_coherent_memory(phys_addr, device_addr, size, flags, &mem); + if (ret) + return ret; + + ret = dma_assign_coherent_memory(dev, mem); + if (ret) + dma_release_coherent_memory(mem); + return ret; +} +EXPORT_SYMBOL(dma_declare_coherent_memory); + +void dma_release_declared_memory(struct device *dev) +{ + struct dma_coherent_mem *mem = dev->dma_mem; + + if (!mem) + return; + dma_release_coherent_memory(mem); + dev->dma_mem = NULL; +} +EXPORT_SYMBOL(dma_release_declared_memory); + +void *dma_mark_declared_memory_occupied(struct device *dev, + dma_addr_t device_addr, size_t size) +{ + struct dma_coherent_mem *mem = dev->dma_mem; + unsigned long flags; + int pos, err; + + size += device_addr & ~PAGE_MASK; + + if (!mem) + return ERR_PTR(-EINVAL); + + spin_lock_irqsave(&mem->spinlock, flags); + pos = PFN_DOWN(device_addr - dma_get_device_base(dev, mem)); + err = bitmap_allocate_region(mem->bitmap, pos, get_order(size)); + spin_unlock_irqrestore(&mem->spinlock, flags); + + if (err != 0) + return ERR_PTR(err); + return mem->virt_base + (pos << PAGE_SHIFT); +} +EXPORT_SYMBOL(dma_mark_declared_memory_occupied); + +static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem, + ssize_t size, dma_addr_t *dma_handle) +{ + int order = get_order(size); + unsigned long flags; + int pageno; + void *ret; + + spin_lock_irqsave(&mem->spinlock, flags); + + if (unlikely(size > (mem->size << PAGE_SHIFT))) + goto err; + + pageno = bitmap_find_free_region(mem->bitmap, mem->size, order); + if (unlikely(pageno < 0)) + goto err; + + /* + * Memory was found in the coherent area. + */ + *dma_handle = mem->device_base + (pageno << PAGE_SHIFT); + ret = mem->virt_base + (pageno << PAGE_SHIFT); + spin_unlock_irqrestore(&mem->spinlock, flags); + memset(ret, 0, size); + return ret; +err: + spin_unlock_irqrestore(&mem->spinlock, flags); + return NULL; +} + +/** + * dma_alloc_from_dev_coherent() - allocate memory from device coherent pool + * @dev: device from which we allocate memory + * @size: size of requested memory area + * @dma_handle: This will be filled with the correct dma handle + * @ret: This pointer will be filled with the virtual address + * to allocated area. + * + * This function should be only called from per-arch dma_alloc_coherent() + * to support allocation from per-device coherent memory pools. + * + * Returns 0 if dma_alloc_coherent should continue with allocating from + * generic memory areas, or !0 if dma_alloc_coherent should return @ret. + */ +int dma_alloc_from_dev_coherent(struct device *dev, ssize_t size, + dma_addr_t *dma_handle, void **ret) +{ + struct dma_coherent_mem *mem = dev_get_coherent_memory(dev); + + if (!mem) + return 0; + + *ret = __dma_alloc_from_coherent(mem, size, dma_handle); + if (*ret) + return 1; + + /* + * In the case where the allocation can not be satisfied from the + * per-device area, try to fall back to generic memory if the + * constraints allow it. + */ + return mem->flags & DMA_MEMORY_EXCLUSIVE; +} +EXPORT_SYMBOL(dma_alloc_from_dev_coherent); + +void *dma_alloc_from_global_coherent(ssize_t size, dma_addr_t *dma_handle) +{ + if (!dma_coherent_default_memory) + return NULL; + + return __dma_alloc_from_coherent(dma_coherent_default_memory, size, + dma_handle); +} + +static int __dma_release_from_coherent(struct dma_coherent_mem *mem, + int order, void *vaddr) +{ + if (mem && vaddr >= mem->virt_base && vaddr < + (mem->virt_base + (mem->size << PAGE_SHIFT))) { + int page = (vaddr - mem->virt_base) >> PAGE_SHIFT; + unsigned long flags; + + spin_lock_irqsave(&mem->spinlock, flags); + bitmap_release_region(mem->bitmap, page, order); + spin_unlock_irqrestore(&mem->spinlock, flags); + return 1; + } + return 0; +} + +/** + * dma_release_from_dev_coherent() - free memory to device coherent memory pool + * @dev: device from which the memory was allocated + * @order: the order of pages allocated + * @vaddr: virtual address of allocated pages + * + * This checks whether the memory was allocated from the per-device + * coherent memory pool and if so, releases that memory. + * + * Returns 1 if we correctly released the memory, or 0 if the caller should + * proceed with releasing memory from generic pools. + */ +int dma_release_from_dev_coherent(struct device *dev, int order, void *vaddr) +{ + struct dma_coherent_mem *mem = dev_get_coherent_memory(dev); + + return __dma_release_from_coherent(mem, order, vaddr); +} +EXPORT_SYMBOL(dma_release_from_dev_coherent); + +int dma_release_from_global_coherent(int order, void *vaddr) +{ + if (!dma_coherent_default_memory) + return 0; + + return __dma_release_from_coherent(dma_coherent_default_memory, order, + vaddr); +} + +static int __dma_mmap_from_coherent(struct dma_coherent_mem *mem, + struct vm_area_struct *vma, void *vaddr, size_t size, int *ret) +{ + if (mem && vaddr >= mem->virt_base && vaddr + size <= + (mem->virt_base + (mem->size << PAGE_SHIFT))) { + unsigned long off = vma->vm_pgoff; + int start = (vaddr - mem->virt_base) >> PAGE_SHIFT; + int user_count = vma_pages(vma); + int count = PAGE_ALIGN(size) >> PAGE_SHIFT; + + *ret = -ENXIO; + if (off < count && user_count <= count - off) { + unsigned long pfn = mem->pfn_base + start + off; + *ret = remap_pfn_range(vma, vma->vm_start, pfn, + user_count << PAGE_SHIFT, + vma->vm_page_prot); + } + return 1; + } + return 0; +} + +/** + * dma_mmap_from_dev_coherent() - mmap memory from the device coherent pool + * @dev: device from which the memory was allocated + * @vma: vm_area for the userspace memory + * @vaddr: cpu address returned by dma_alloc_from_dev_coherent + * @size: size of the memory buffer allocated + * @ret: result from remap_pfn_range() + * + * This checks whether the memory was allocated from the per-device + * coherent memory pool and if so, maps that memory to the provided vma. + * + * Returns 1 if @vaddr belongs to the device coherent pool and the caller + * should return @ret, or 0 if they should proceed with mapping memory from + * generic areas. + */ +int dma_mmap_from_dev_coherent(struct device *dev, struct vm_area_struct *vma, + void *vaddr, size_t size, int *ret) +{ + struct dma_coherent_mem *mem = dev_get_coherent_memory(dev); + + return __dma_mmap_from_coherent(mem, vma, vaddr, size, ret); +} +EXPORT_SYMBOL(dma_mmap_from_dev_coherent); + +int dma_mmap_from_global_coherent(struct vm_area_struct *vma, void *vaddr, + size_t size, int *ret) +{ + if (!dma_coherent_default_memory) + return 0; + + return __dma_mmap_from_coherent(dma_coherent_default_memory, vma, + vaddr, size, ret); +} + +/* + * Support for reserved memory regions defined in device tree + */ +#ifdef CONFIG_OF_RESERVED_MEM +#include +#include +#include + +static struct reserved_mem *dma_reserved_default_memory __initdata; + +static int rmem_dma_device_init(struct reserved_mem *rmem, struct device *dev) +{ + struct dma_coherent_mem *mem = rmem->priv; + int ret; + + if (!mem) { + ret = dma_init_coherent_memory(rmem->base, rmem->base, + rmem->size, + DMA_MEMORY_EXCLUSIVE, &mem); + if (ret) { + pr_err("Reserved memory: failed to init DMA memory pool at %pa, size %ld MiB\n", + &rmem->base, (unsigned long)rmem->size / SZ_1M); + return ret; + } + } + mem->use_dev_dma_pfn_offset = true; + rmem->priv = mem; + dma_assign_coherent_memory(dev, mem); + return 0; +} + +static void rmem_dma_device_release(struct reserved_mem *rmem, + struct device *dev) +{ + if (dev) + dev->dma_mem = NULL; +} + +static const struct reserved_mem_ops rmem_dma_ops = { + .device_init = rmem_dma_device_init, + .device_release = rmem_dma_device_release, +}; + +static int __init rmem_dma_setup(struct reserved_mem *rmem) +{ + unsigned long node = rmem->fdt_node; + + if (of_get_flat_dt_prop(node, "reusable", NULL)) + return -EINVAL; + +#ifdef CONFIG_ARM + if (!of_get_flat_dt_prop(node, "no-map", NULL)) { + pr_err("Reserved memory: regions without no-map are not yet supported\n"); + return -EINVAL; + } + + if (of_get_flat_dt_prop(node, "linux,dma-default", NULL)) { + WARN(dma_reserved_default_memory, + "Reserved memory: region for default DMA coherent area is redefined\n"); + dma_reserved_default_memory = rmem; + } +#endif + + rmem->ops = &rmem_dma_ops; + pr_info("Reserved memory: created DMA memory pool at %pa, size %ld MiB\n", + &rmem->base, (unsigned long)rmem->size / SZ_1M); + return 0; +} + +static int __init dma_init_reserved_memory(void) +{ + const struct reserved_mem_ops *ops; + int ret; + + if (!dma_reserved_default_memory) + return -ENOMEM; + + ops = dma_reserved_default_memory->ops; + + /* + * We rely on rmem_dma_device_init() does not propagate error of + * dma_assign_coherent_memory() for "NULL" device. + */ + ret = ops->device_init(dma_reserved_default_memory, NULL); + + if (!ret) { + dma_coherent_default_memory = dma_reserved_default_memory->priv; + pr_info("DMA: default coherent area is set\n"); + } + + return ret; +} + +core_initcall(dma_init_reserved_memory); + +RESERVEDMEM_OF_DECLARE(dma, "shared-dma-pool", rmem_dma_setup); +#endif diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c new file mode 100644 index 000000000000..d987dcd1bd56 --- /dev/null +++ b/kernel/dma/contiguous.c @@ -0,0 +1,278 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Contiguous Memory Allocator for DMA mapping framework + * Copyright (c) 2010-2011 by Samsung Electronics. + * Written by: + * Marek Szyprowski + * Michal Nazarewicz + */ + +#define pr_fmt(fmt) "cma: " fmt + +#ifdef CONFIG_CMA_DEBUG +#ifndef DEBUG +# define DEBUG +#endif +#endif + +#include +#include + +#include +#include +#include +#include +#include + +#ifdef CONFIG_CMA_SIZE_MBYTES +#define CMA_SIZE_MBYTES CONFIG_CMA_SIZE_MBYTES +#else +#define CMA_SIZE_MBYTES 0 +#endif + +struct cma *dma_contiguous_default_area; + +/* + * Default global CMA area size can be defined in kernel's .config. + * This is useful mainly for distro maintainers to create a kernel + * that works correctly for most supported systems. + * The size can be set in bytes or as a percentage of the total memory + * in the system. + * + * Users, who want to set the size of global CMA area for their system + * should use cma= kernel parameter. + */ +static const phys_addr_t size_bytes = (phys_addr_t)CMA_SIZE_MBYTES * SZ_1M; +static phys_addr_t size_cmdline = -1; +static phys_addr_t base_cmdline; +static phys_addr_t limit_cmdline; + +static int __init early_cma(char *p) +{ + pr_debug("%s(%s)\n", __func__, p); + size_cmdline = memparse(p, &p); + if (*p != '@') + return 0; + base_cmdline = memparse(p + 1, &p); + if (*p != '-') { + limit_cmdline = base_cmdline + size_cmdline; + return 0; + } + limit_cmdline = memparse(p + 1, &p); + + return 0; +} +early_param("cma", early_cma); + +#ifdef CONFIG_CMA_SIZE_PERCENTAGE + +static phys_addr_t __init __maybe_unused cma_early_percent_memory(void) +{ + struct memblock_region *reg; + unsigned long total_pages = 0; + + /* + * We cannot use memblock_phys_mem_size() here, because + * memblock_analyze() has not been called yet. + */ + for_each_memblock(memory, reg) + total_pages += memblock_region_memory_end_pfn(reg) - + memblock_region_memory_base_pfn(reg); + + return (total_pages * CONFIG_CMA_SIZE_PERCENTAGE / 100) << PAGE_SHIFT; +} + +#else + +static inline __maybe_unused phys_addr_t cma_early_percent_memory(void) +{ + return 0; +} + +#endif + +/** + * dma_contiguous_reserve() - reserve area(s) for contiguous memory handling + * @limit: End address of the reserved memory (optional, 0 for any). + * + * This function reserves memory from early allocator. It should be + * called by arch specific code once the early allocator (memblock or bootmem) + * has been activated and all other subsystems have already allocated/reserved + * memory. + */ +void __init dma_contiguous_reserve(phys_addr_t limit) +{ + phys_addr_t selected_size = 0; + phys_addr_t selected_base = 0; + phys_addr_t selected_limit = limit; + bool fixed = false; + + pr_debug("%s(limit %08lx)\n", __func__, (unsigned long)limit); + + if (size_cmdline != -1) { + selected_size = size_cmdline; + selected_base = base_cmdline; + selected_limit = min_not_zero(limit_cmdline, limit); + if (base_cmdline + size_cmdline == limit_cmdline) + fixed = true; + } else { +#ifdef CONFIG_CMA_SIZE_SEL_MBYTES + selected_size = size_bytes; +#elif defined(CONFIG_CMA_SIZE_SEL_PERCENTAGE) + selected_size = cma_early_percent_memory(); +#elif defined(CONFIG_CMA_SIZE_SEL_MIN) + selected_size = min(size_bytes, cma_early_percent_memory()); +#elif defined(CONFIG_CMA_SIZE_SEL_MAX) + selected_size = max(size_bytes, cma_early_percent_memory()); +#endif + } + + if (selected_size && !dma_contiguous_default_area) { + pr_debug("%s: reserving %ld MiB for global area\n", __func__, + (unsigned long)selected_size / SZ_1M); + + dma_contiguous_reserve_area(selected_size, selected_base, + selected_limit, + &dma_contiguous_default_area, + fixed); + } +} + +/** + * dma_contiguous_reserve_area() - reserve custom contiguous area + * @size: Size of the reserved area (in bytes), + * @base: Base address of the reserved area optional, use 0 for any + * @limit: End address of the reserved memory (optional, 0 for any). + * @res_cma: Pointer to store the created cma region. + * @fixed: hint about where to place the reserved area + * + * This function reserves memory from early allocator. It should be + * called by arch specific code once the early allocator (memblock or bootmem) + * has been activated and all other subsystems have already allocated/reserved + * memory. This function allows to create custom reserved areas for specific + * devices. + * + * If @fixed is true, reserve contiguous area at exactly @base. If false, + * reserve in range from @base to @limit. + */ +int __init dma_contiguous_reserve_area(phys_addr_t size, phys_addr_t base, + phys_addr_t limit, struct cma **res_cma, + bool fixed) +{ + int ret; + + ret = cma_declare_contiguous(base, size, limit, 0, 0, fixed, + "reserved", res_cma); + if (ret) + return ret; + + /* Architecture specific contiguous memory fixup. */ + dma_contiguous_early_fixup(cma_get_base(*res_cma), + cma_get_size(*res_cma)); + + return 0; +} + +/** + * dma_alloc_from_contiguous() - allocate pages from contiguous area + * @dev: Pointer to device for which the allocation is performed. + * @count: Requested number of pages. + * @align: Requested alignment of pages (in PAGE_SIZE order). + * @gfp_mask: GFP flags to use for this allocation. + * + * This function allocates memory buffer for specified device. It uses + * device specific contiguous memory area if available or the default + * global one. Requires architecture specific dev_get_cma_area() helper + * function. + */ +struct page *dma_alloc_from_contiguous(struct device *dev, size_t count, + unsigned int align, gfp_t gfp_mask) +{ + if (align > CONFIG_CMA_ALIGNMENT) + align = CONFIG_CMA_ALIGNMENT; + + return cma_alloc(dev_get_cma_area(dev), count, align, gfp_mask); +} + +/** + * dma_release_from_contiguous() - release allocated pages + * @dev: Pointer to device for which the pages were allocated. + * @pages: Allocated pages. + * @count: Number of allocated pages. + * + * This function releases memory allocated by dma_alloc_from_contiguous(). + * It returns false when provided pages do not belong to contiguous area and + * true otherwise. + */ +bool dma_release_from_contiguous(struct device *dev, struct page *pages, + int count) +{ + return cma_release(dev_get_cma_area(dev), pages, count); +} + +/* + * Support for reserved memory regions defined in device tree + */ +#ifdef CONFIG_OF_RESERVED_MEM +#include +#include +#include + +#undef pr_fmt +#define pr_fmt(fmt) fmt + +static int rmem_cma_device_init(struct reserved_mem *rmem, struct device *dev) +{ + dev_set_cma_area(dev, rmem->priv); + return 0; +} + +static void rmem_cma_device_release(struct reserved_mem *rmem, + struct device *dev) +{ + dev_set_cma_area(dev, NULL); +} + +static const struct reserved_mem_ops rmem_cma_ops = { + .device_init = rmem_cma_device_init, + .device_release = rmem_cma_device_release, +}; + +static int __init rmem_cma_setup(struct reserved_mem *rmem) +{ + phys_addr_t align = PAGE_SIZE << max(MAX_ORDER - 1, pageblock_order); + phys_addr_t mask = align - 1; + unsigned long node = rmem->fdt_node; + struct cma *cma; + int err; + + if (!of_get_flat_dt_prop(node, "reusable", NULL) || + of_get_flat_dt_prop(node, "no-map", NULL)) + return -EINVAL; + + if ((rmem->base & mask) || (rmem->size & mask)) { + pr_err("Reserved memory: incorrect alignment of CMA region\n"); + return -EINVAL; + } + + err = cma_init_reserved_mem(rmem->base, rmem->size, 0, rmem->name, &cma); + if (err) { + pr_err("Reserved memory: unable to setup CMA region\n"); + return err; + } + /* Architecture specific contiguous memory fixup. */ + dma_contiguous_early_fixup(rmem->base, rmem->size); + + if (of_get_flat_dt_prop(node, "linux,cma-default", NULL)) + dma_contiguous_set_default(cma); + + rmem->ops = &rmem_cma_ops; + rmem->priv = cma; + + pr_info("Reserved memory: created CMA memory pool at %pa, size %ld MiB\n", + &rmem->base, (unsigned long)rmem->size / SZ_1M); + + return 0; +} +RESERVEDMEM_OF_DECLARE(cma, "shared-dma-pool", rmem_cma_setup); +#endif diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c new file mode 100644 index 000000000000..c007d25bee09 --- /dev/null +++ b/kernel/dma/debug.c @@ -0,0 +1,1773 @@ +/* + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * + * Author: Joerg Roedel + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define HASH_SIZE 1024ULL +#define HASH_FN_SHIFT 13 +#define HASH_FN_MASK (HASH_SIZE - 1) + +/* allow architectures to override this if absolutely required */ +#ifndef PREALLOC_DMA_DEBUG_ENTRIES +#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16) +#endif + +enum { + dma_debug_single, + dma_debug_page, + dma_debug_sg, + dma_debug_coherent, + dma_debug_resource, +}; + +enum map_err_types { + MAP_ERR_CHECK_NOT_APPLICABLE, + MAP_ERR_NOT_CHECKED, + MAP_ERR_CHECKED, +}; + +#define DMA_DEBUG_STACKTRACE_ENTRIES 5 + +/** + * struct dma_debug_entry - track a dma_map* or dma_alloc_coherent mapping + * @list: node on pre-allocated free_entries list + * @dev: 'dev' argument to dma_map_{page|single|sg} or dma_alloc_coherent + * @type: single, page, sg, coherent + * @pfn: page frame of the start address + * @offset: offset of mapping relative to pfn + * @size: length of the mapping + * @direction: enum dma_data_direction + * @sg_call_ents: 'nents' from dma_map_sg + * @sg_mapped_ents: 'mapped_ents' from dma_map_sg + * @map_err_type: track whether dma_mapping_error() was checked + * @stacktrace: support backtraces when a violation is detected + */ +struct dma_debug_entry { + struct list_head list; + struct device *dev; + int type; + unsigned long pfn; + size_t offset; + u64 dev_addr; + u64 size; + int direction; + int sg_call_ents; + int sg_mapped_ents; + enum map_err_types map_err_type; +#ifdef CONFIG_STACKTRACE + struct stack_trace stacktrace; + unsigned long st_entries[DMA_DEBUG_STACKTRACE_ENTRIES]; +#endif +}; + +typedef bool (*match_fn)(struct dma_debug_entry *, struct dma_debug_entry *); + +struct hash_bucket { + struct list_head list; + spinlock_t lock; +} ____cacheline_aligned_in_smp; + +/* Hash list to save the allocated dma addresses */ +static struct hash_bucket dma_entry_hash[HASH_SIZE]; +/* List of pre-allocated dma_debug_entry's */ +static LIST_HEAD(free_entries); +/* Lock for the list above */ +static DEFINE_SPINLOCK(free_entries_lock); + +/* Global disable flag - will be set in case of an error */ +static bool global_disable __read_mostly; + +/* Early initialization disable flag, set at the end of dma_debug_init */ +static bool dma_debug_initialized __read_mostly; + +static inline bool dma_debug_disabled(void) +{ + return global_disable || !dma_debug_initialized; +} + +/* Global error count */ +static u32 error_count; + +/* Global error show enable*/ +static u32 show_all_errors __read_mostly; +/* Number of errors to show */ +static u32 show_num_errors = 1; + +static u32 num_free_entries; +static u32 min_free_entries; +static u32 nr_total_entries; + +/* number of preallocated entries requested by kernel cmdline */ +static u32 nr_prealloc_entries = PREALLOC_DMA_DEBUG_ENTRIES; + +/* debugfs dentry's for the stuff above */ +static struct dentry *dma_debug_dent __read_mostly; +static struct dentry *global_disable_dent __read_mostly; +static struct dentry *error_count_dent __read_mostly; +static struct dentry *show_all_errors_dent __read_mostly; +static struct dentry *show_num_errors_dent __read_mostly; +static struct dentry *num_free_entries_dent __read_mostly; +static struct dentry *min_free_entries_dent __read_mostly; +static struct dentry *filter_dent __read_mostly; + +/* per-driver filter related state */ + +#define NAME_MAX_LEN 64 + +static char current_driver_name[NAME_MAX_LEN] __read_mostly; +static struct device_driver *current_driver __read_mostly; + +static DEFINE_RWLOCK(driver_name_lock); + +static const char *const maperr2str[] = { + [MAP_ERR_CHECK_NOT_APPLICABLE] = "dma map error check not applicable", + [MAP_ERR_NOT_CHECKED] = "dma map error not checked", + [MAP_ERR_CHECKED] = "dma map error checked", +}; + +static const char *type2name[5] = { "single", "page", + "scather-gather", "coherent", + "resource" }; + +static const char *dir2name[4] = { "DMA_BIDIRECTIONAL", "DMA_TO_DEVICE", + "DMA_FROM_DEVICE", "DMA_NONE" }; + +/* + * The access to some variables in this macro is racy. We can't use atomic_t + * here because all these variables are exported to debugfs. Some of them even + * writeable. This is also the reason why a lock won't help much. But anyway, + * the races are no big deal. Here is why: + * + * error_count: the addition is racy, but the worst thing that can happen is + * that we don't count some errors + * show_num_errors: the subtraction is racy. Also no big deal because in + * worst case this will result in one warning more in the + * system log than the user configured. This variable is + * writeable via debugfs. + */ +static inline void dump_entry_trace(struct dma_debug_entry *entry) +{ +#ifdef CONFIG_STACKTRACE + if (entry) { + pr_warning("Mapped at:\n"); + print_stack_trace(&entry->stacktrace, 0); + } +#endif +} + +static bool driver_filter(struct device *dev) +{ + struct device_driver *drv; + unsigned long flags; + bool ret; + + /* driver filter off */ + if (likely(!current_driver_name[0])) + return true; + + /* driver filter on and initialized */ + if (current_driver && dev && dev->driver == current_driver) + return true; + + /* driver filter on, but we can't filter on a NULL device... */ + if (!dev) + return false; + + if (current_driver || !current_driver_name[0]) + return false; + + /* driver filter on but not yet initialized */ + drv = dev->driver; + if (!drv) + return false; + + /* lock to protect against change of current_driver_name */ + read_lock_irqsave(&driver_name_lock, flags); + + ret = false; + if (drv->name && + strncmp(current_driver_name, drv->name, NAME_MAX_LEN - 1) == 0) { + current_driver = drv; + ret = true; + } + + read_unlock_irqrestore(&driver_name_lock, flags); + + return ret; +} + +#define err_printk(dev, entry, format, arg...) do { \ + error_count += 1; \ + if (driver_filter(dev) && \ + (show_all_errors || show_num_errors > 0)) { \ + WARN(1, "%s %s: " format, \ + dev ? dev_driver_string(dev) : "NULL", \ + dev ? dev_name(dev) : "NULL", ## arg); \ + dump_entry_trace(entry); \ + } \ + if (!show_all_errors && show_num_errors > 0) \ + show_num_errors -= 1; \ + } while (0); + +/* + * Hash related functions + * + * Every DMA-API request is saved into a struct dma_debug_entry. To + * have quick access to these structs they are stored into a hash. + */ +static int hash_fn(struct dma_debug_entry *entry) +{ + /* + * Hash function is based on the dma address. + * We use bits 20-27 here as the index into the hash + */ + return (entry->dev_addr >> HASH_FN_SHIFT) & HASH_FN_MASK; +} + +/* + * Request exclusive access to a hash bucket for a given dma_debug_entry. + */ +static struct hash_bucket *get_hash_bucket(struct dma_debug_entry *entry, + unsigned long *flags) + __acquires(&dma_entry_hash[idx].lock) +{ + int idx = hash_fn(entry); + unsigned long __flags; + + spin_lock_irqsave(&dma_entry_hash[idx].lock, __flags); + *flags = __flags; + return &dma_entry_hash[idx]; +} + +/* + * Give up exclusive access to the hash bucket + */ +static void put_hash_bucket(struct hash_bucket *bucket, + unsigned long *flags) + __releases(&bucket->lock) +{ + unsigned long __flags = *flags; + + spin_unlock_irqrestore(&bucket->lock, __flags); +} + +static bool exact_match(struct dma_debug_entry *a, struct dma_debug_entry *b) +{ + return ((a->dev_addr == b->dev_addr) && + (a->dev == b->dev)) ? true : false; +} + +static bool containing_match(struct dma_debug_entry *a, + struct dma_debug_entry *b) +{ + if (a->dev != b->dev) + return false; + + if ((b->dev_addr <= a->dev_addr) && + ((b->dev_addr + b->size) >= (a->dev_addr + a->size))) + return true; + + return false; +} + +/* + * Search a given entry in the hash bucket list + */ +static struct dma_debug_entry *__hash_bucket_find(struct hash_bucket *bucket, + struct dma_debug_entry *ref, + match_fn match) +{ + struct dma_debug_entry *entry, *ret = NULL; + int matches = 0, match_lvl, last_lvl = -1; + + list_for_each_entry(entry, &bucket->list, list) { + if (!match(ref, entry)) + continue; + + /* + * Some drivers map the same physical address multiple + * times. Without a hardware IOMMU this results in the + * same device addresses being put into the dma-debug + * hash multiple times too. This can result in false + * positives being reported. Therefore we implement a + * best-fit algorithm here which returns the entry from + * the hash which fits best to the reference value + * instead of the first-fit. + */ + matches += 1; + match_lvl = 0; + entry->size == ref->size ? ++match_lvl : 0; + entry->type == ref->type ? ++match_lvl : 0; + entry->direction == ref->direction ? ++match_lvl : 0; + entry->sg_call_ents == ref->sg_call_ents ? ++match_lvl : 0; + + if (match_lvl == 4) { + /* perfect-fit - return the result */ + return entry; + } else if (match_lvl > last_lvl) { + /* + * We found an entry that fits better then the + * previous one or it is the 1st match. + */ + last_lvl = match_lvl; + ret = entry; + } + } + + /* + * If we have multiple matches but no perfect-fit, just return + * NULL. + */ + ret = (matches == 1) ? ret : NULL; + + return ret; +} + +static struct dma_debug_entry *bucket_find_exact(struct hash_bucket *bucket, + struct dma_debug_entry *ref) +{ + return __hash_bucket_find(bucket, ref, exact_match); +} + +static struct dma_debug_entry *bucket_find_contain(struct hash_bucket **bucket, + struct dma_debug_entry *ref, + unsigned long *flags) +{ + + unsigned int max_range = dma_get_max_seg_size(ref->dev); + struct dma_debug_entry *entry, index = *ref; + unsigned int range = 0; + + while (range <= max_range) { + entry = __hash_bucket_find(*bucket, ref, containing_match); + + if (entry) + return entry; + + /* + * Nothing found, go back a hash bucket + */ + put_hash_bucket(*bucket, flags); + range += (1 << HASH_FN_SHIFT); + index.dev_addr -= (1 << HASH_FN_SHIFT); + *bucket = get_hash_bucket(&index, flags); + } + + return NULL; +} + +/* + * Add an entry to a hash bucket + */ +static void hash_bucket_add(struct hash_bucket *bucket, + struct dma_debug_entry *entry) +{ + list_add_tail(&entry->list, &bucket->list); +} + +/* + * Remove entry from a hash bucket list + */ +static void hash_bucket_del(struct dma_debug_entry *entry) +{ + list_del(&entry->list); +} + +static unsigned long long phys_addr(struct dma_debug_entry *entry) +{ + if (entry->type == dma_debug_resource) + return __pfn_to_phys(entry->pfn) + entry->offset; + + return page_to_phys(pfn_to_page(entry->pfn)) + entry->offset; +} + +/* + * Dump mapping entries for debugging purposes + */ +void debug_dma_dump_mappings(struct device *dev) +{ + int idx; + + for (idx = 0; idx < HASH_SIZE; idx++) { + struct hash_bucket *bucket = &dma_entry_hash[idx]; + struct dma_debug_entry *entry; + unsigned long flags; + + spin_lock_irqsave(&bucket->lock, flags); + + list_for_each_entry(entry, &bucket->list, list) { + if (!dev || dev == entry->dev) { + dev_info(entry->dev, + "%s idx %d P=%Lx N=%lx D=%Lx L=%Lx %s %s\n", + type2name[entry->type], idx, + phys_addr(entry), entry->pfn, + entry->dev_addr, entry->size, + dir2name[entry->direction], + maperr2str[entry->map_err_type]); + } + } + + spin_unlock_irqrestore(&bucket->lock, flags); + } +} + +/* + * For each mapping (initial cacheline in the case of + * dma_alloc_coherent/dma_map_page, initial cacheline in each page of a + * scatterlist, or the cacheline specified in dma_map_single) insert + * into this tree using the cacheline as the key. At + * dma_unmap_{single|sg|page} or dma_free_coherent delete the entry. If + * the entry already exists at insertion time add a tag as a reference + * count for the overlapping mappings. For now, the overlap tracking + * just ensures that 'unmaps' balance 'maps' before marking the + * cacheline idle, but we should also be flagging overlaps as an API + * violation. + * + * Memory usage is mostly constrained by the maximum number of available + * dma-debug entries in that we need a free dma_debug_entry before + * inserting into the tree. In the case of dma_map_page and + * dma_alloc_coherent there is only one dma_debug_entry and one + * dma_active_cacheline entry to track per event. dma_map_sg(), on the + * other hand, consumes a single dma_debug_entry, but inserts 'nents' + * entries into the tree. + * + * At any time debug_dma_assert_idle() can be called to trigger a + * warning if any cachelines in the given page are in the active set. + */ +static RADIX_TREE(dma_active_cacheline, GFP_NOWAIT); +static DEFINE_SPINLOCK(radix_lock); +#define ACTIVE_CACHELINE_MAX_OVERLAP ((1 << RADIX_TREE_MAX_TAGS) - 1) +#define CACHELINE_PER_PAGE_SHIFT (PAGE_SHIFT - L1_CACHE_SHIFT) +#define CACHELINES_PER_PAGE (1 << CACHELINE_PER_PAGE_SHIFT) + +static phys_addr_t to_cacheline_number(struct dma_debug_entry *entry) +{ + return (entry->pfn << CACHELINE_PER_PAGE_SHIFT) + + (entry->offset >> L1_CACHE_SHIFT); +} + +static int active_cacheline_read_overlap(phys_addr_t cln) +{ + int overlap = 0, i; + + for (i = RADIX_TREE_MAX_TAGS - 1; i >= 0; i--) + if (radix_tree_tag_get(&dma_active_cacheline, cln, i)) + overlap |= 1 << i; + return overlap; +} + +static int active_cacheline_set_overlap(phys_addr_t cln, int overlap) +{ + int i; + + if (overlap > ACTIVE_CACHELINE_MAX_OVERLAP || overlap < 0) + return overlap; + + for (i = RADIX_TREE_MAX_TAGS - 1; i >= 0; i--) + if (overlap & 1 << i) + radix_tree_tag_set(&dma_active_cacheline, cln, i); + else + radix_tree_tag_clear(&dma_active_cacheline, cln, i); + + return overlap; +} + +static void active_cacheline_inc_overlap(phys_addr_t cln) +{ + int overlap = active_cacheline_read_overlap(cln); + + overlap = active_cacheline_set_overlap(cln, ++overlap); + + /* If we overflowed the overlap counter then we're potentially + * leaking dma-mappings. Otherwise, if maps and unmaps are + * balanced then this overflow may cause false negatives in + * debug_dma_assert_idle() as the cacheline may be marked idle + * prematurely. + */ + WARN_ONCE(overlap > ACTIVE_CACHELINE_MAX_OVERLAP, + "DMA-API: exceeded %d overlapping mappings of cacheline %pa\n", + ACTIVE_CACHELINE_MAX_OVERLAP, &cln); +} + +static int active_cacheline_dec_overlap(phys_addr_t cln) +{ + int overlap = active_cacheline_read_overlap(cln); + + return active_cacheline_set_overlap(cln, --overlap); +} + +static int active_cacheline_insert(struct dma_debug_entry *entry) +{ + phys_addr_t cln = to_cacheline_number(entry); + unsigned long flags; + int rc; + + /* If the device is not writing memory then we don't have any + * concerns about the cpu consuming stale data. This mitigates + * legitimate usages of overlapping mappings. + */ + if (entry->direction == DMA_TO_DEVICE) + return 0; + + spin_lock_irqsave(&radix_lock, flags); + rc = radix_tree_insert(&dma_active_cacheline, cln, entry); + if (rc == -EEXIST) + active_cacheline_inc_overlap(cln); + spin_unlock_irqrestore(&radix_lock, flags); + + return rc; +} + +static void active_cacheline_remove(struct dma_debug_entry *entry) +{ + phys_addr_t cln = to_cacheline_number(entry); + unsigned long flags; + + /* ...mirror the insert case */ + if (entry->direction == DMA_TO_DEVICE) + return; + + spin_lock_irqsave(&radix_lock, flags); + /* since we are counting overlaps the final put of the + * cacheline will occur when the overlap count is 0. + * active_cacheline_dec_overlap() returns -1 in that case + */ + if (active_cacheline_dec_overlap(cln) < 0) + radix_tree_delete(&dma_active_cacheline, cln); + spin_unlock_irqrestore(&radix_lock, flags); +} + +/** + * debug_dma_assert_idle() - assert that a page is not undergoing dma + * @page: page to lookup in the dma_active_cacheline tree + * + * Place a call to this routine in cases where the cpu touching the page + * before the dma completes (page is dma_unmapped) will lead to data + * corruption. + */ +void debug_dma_assert_idle(struct page *page) +{ + static struct dma_debug_entry *ents[CACHELINES_PER_PAGE]; + struct dma_debug_entry *entry = NULL; + void **results = (void **) &ents; + unsigned int nents, i; + unsigned long flags; + phys_addr_t cln; + + if (dma_debug_disabled()) + return; + + if (!page) + return; + + cln = (phys_addr_t) page_to_pfn(page) << CACHELINE_PER_PAGE_SHIFT; + spin_lock_irqsave(&radix_lock, flags); + nents = radix_tree_gang_lookup(&dma_active_cacheline, results, cln, + CACHELINES_PER_PAGE); + for (i = 0; i < nents; i++) { + phys_addr_t ent_cln = to_cacheline_number(ents[i]); + + if (ent_cln == cln) { + entry = ents[i]; + break; + } else if (ent_cln >= cln + CACHELINES_PER_PAGE) + break; + } + spin_unlock_irqrestore(&radix_lock, flags); + + if (!entry) + return; + + cln = to_cacheline_number(entry); + err_printk(entry->dev, entry, + "DMA-API: cpu touching an active dma mapped cacheline [cln=%pa]\n", + &cln); +} + +/* + * Wrapper function for adding an entry to the hash. + * This function takes care of locking itself. + */ +static void add_dma_entry(struct dma_debug_entry *entry) +{ + struct hash_bucket *bucket; + unsigned long flags; + int rc; + + bucket = get_hash_bucket(entry, &flags); + hash_bucket_add(bucket, entry); + put_hash_bucket(bucket, &flags); + + rc = active_cacheline_insert(entry); + if (rc == -ENOMEM) { + pr_err("DMA-API: cacheline tracking ENOMEM, dma-debug disabled\n"); + global_disable = true; + } + + /* TODO: report -EEXIST errors here as overlapping mappings are + * not supported by the DMA API + */ +} + +static struct dma_debug_entry *__dma_entry_alloc(void) +{ + struct dma_debug_entry *entry; + + entry = list_entry(free_entries.next, struct dma_debug_entry, list); + list_del(&entry->list); + memset(entry, 0, sizeof(*entry)); + + num_free_entries -= 1; + if (num_free_entries < min_free_entries) + min_free_entries = num_free_entries; + + return entry; +} + +/* struct dma_entry allocator + * + * The next two functions implement the allocator for + * struct dma_debug_entries. + */ +static struct dma_debug_entry *dma_entry_alloc(void) +{ + struct dma_debug_entry *entry; + unsigned long flags; + + spin_lock_irqsave(&free_entries_lock, flags); + + if (list_empty(&free_entries)) { + global_disable = true; + spin_unlock_irqrestore(&free_entries_lock, flags); + pr_err("DMA-API: debugging out of memory - disabling\n"); + return NULL; + } + + entry = __dma_entry_alloc(); + + spin_unlock_irqrestore(&free_entries_lock, flags); + +#ifdef CONFIG_STACKTRACE + entry->stacktrace.max_entries = DMA_DEBUG_STACKTRACE_ENTRIES; + entry->stacktrace.entries = entry->st_entries; + entry->stacktrace.skip = 2; + save_stack_trace(&entry->stacktrace); +#endif + + return entry; +} + +static void dma_entry_free(struct dma_debug_entry *entry) +{ + unsigned long flags; + + active_cacheline_remove(entry); + + /* + * add to beginning of the list - this way the entries are + * more likely cache hot when they are reallocated. + */ + spin_lock_irqsave(&free_entries_lock, flags); + list_add(&entry->list, &free_entries); + num_free_entries += 1; + spin_unlock_irqrestore(&free_entries_lock, flags); +} + +int dma_debug_resize_entries(u32 num_entries) +{ + int i, delta, ret = 0; + unsigned long flags; + struct dma_debug_entry *entry; + LIST_HEAD(tmp); + + spin_lock_irqsave(&free_entries_lock, flags); + + if (nr_total_entries < num_entries) { + delta = num_entries - nr_total_entries; + + spin_unlock_irqrestore(&free_entries_lock, flags); + + for (i = 0; i < delta; i++) { + entry = kzalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + break; + + list_add_tail(&entry->list, &tmp); + } + + spin_lock_irqsave(&free_entries_lock, flags); + + list_splice(&tmp, &free_entries); + nr_total_entries += i; + num_free_entries += i; + } else { + delta = nr_total_entries - num_entries; + + for (i = 0; i < delta && !list_empty(&free_entries); i++) { + entry = __dma_entry_alloc(); + kfree(entry); + } + + nr_total_entries -= i; + } + + if (nr_total_entries != num_entries) + ret = 1; + + spin_unlock_irqrestore(&free_entries_lock, flags); + + return ret; +} + +/* + * DMA-API debugging init code + * + * The init code does two things: + * 1. Initialize core data structures + * 2. Preallocate a given number of dma_debug_entry structs + */ + +static int prealloc_memory(u32 num_entries) +{ + struct dma_debug_entry *entry, *next_entry; + int i; + + for (i = 0; i < num_entries; ++i) { + entry = kzalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + goto out_err; + + list_add_tail(&entry->list, &free_entries); + } + + num_free_entries = num_entries; + min_free_entries = num_entries; + + pr_info("DMA-API: preallocated %d debug entries\n", num_entries); + + return 0; + +out_err: + + list_for_each_entry_safe(entry, next_entry, &free_entries, list) { + list_del(&entry->list); + kfree(entry); + } + + return -ENOMEM; +} + +static ssize_t filter_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + char buf[NAME_MAX_LEN + 1]; + unsigned long flags; + int len; + + if (!current_driver_name[0]) + return 0; + + /* + * We can't copy to userspace directly because current_driver_name can + * only be read under the driver_name_lock with irqs disabled. So + * create a temporary copy first. + */ + read_lock_irqsave(&driver_name_lock, flags); + len = scnprintf(buf, NAME_MAX_LEN + 1, "%s\n", current_driver_name); + read_unlock_irqrestore(&driver_name_lock, flags); + + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +} + +static ssize_t filter_write(struct file *file, const char __user *userbuf, + size_t count, loff_t *ppos) +{ + char buf[NAME_MAX_LEN]; + unsigned long flags; + size_t len; + int i; + + /* + * We can't copy from userspace directly. Access to + * current_driver_name is protected with a write_lock with irqs + * disabled. Since copy_from_user can fault and may sleep we + * need to copy to temporary buffer first + */ + len = min(count, (size_t)(NAME_MAX_LEN - 1)); + if (copy_from_user(buf, userbuf, len)) + return -EFAULT; + + buf[len] = 0; + + write_lock_irqsave(&driver_name_lock, flags); + + /* + * Now handle the string we got from userspace very carefully. + * The rules are: + * - only use the first token we got + * - token delimiter is everything looking like a space + * character (' ', '\n', '\t' ...) + * + */ + if (!isalnum(buf[0])) { + /* + * If the first character userspace gave us is not + * alphanumerical then assume the filter should be + * switched off. + */ + if (current_driver_name[0]) + pr_info("DMA-API: switching off dma-debug driver filter\n"); + current_driver_name[0] = 0; + current_driver = NULL; + goto out_unlock; + } + + /* + * Now parse out the first token and use it as the name for the + * driver to filter for. + */ + for (i = 0; i < NAME_MAX_LEN - 1; ++i) { + current_driver_name[i] = buf[i]; + if (isspace(buf[i]) || buf[i] == ' ' || buf[i] == 0) + break; + } + current_driver_name[i] = 0; + current_driver = NULL; + + pr_info("DMA-API: enable driver filter for driver [%s]\n", + current_driver_name); + +out_unlock: + write_unlock_irqrestore(&driver_name_lock, flags); + + return count; +} + +static const struct file_operations filter_fops = { + .read = filter_read, + .write = filter_write, + .llseek = default_llseek, +}; + +static int dma_debug_fs_init(void) +{ + dma_debug_dent = debugfs_create_dir("dma-api", NULL); + if (!dma_debug_dent) { + pr_err("DMA-API: can not create debugfs directory\n"); + return -ENOMEM; + } + + global_disable_dent = debugfs_create_bool("disabled", 0444, + dma_debug_dent, + &global_disable); + if (!global_disable_dent) + goto out_err; + + error_count_dent = debugfs_create_u32("error_count", 0444, + dma_debug_dent, &error_count); + if (!error_count_dent) + goto out_err; + + show_all_errors_dent = debugfs_create_u32("all_errors", 0644, + dma_debug_dent, + &show_all_errors); + if (!show_all_errors_dent) + goto out_err; + + show_num_errors_dent = debugfs_create_u32("num_errors", 0644, + dma_debug_dent, + &show_num_errors); + if (!show_num_errors_dent) + goto out_err; + + num_free_entries_dent = debugfs_create_u32("num_free_entries", 0444, + dma_debug_dent, + &num_free_entries); + if (!num_free_entries_dent) + goto out_err; + + min_free_entries_dent = debugfs_create_u32("min_free_entries", 0444, + dma_debug_dent, + &min_free_entries); + if (!min_free_entries_dent) + goto out_err; + + filter_dent = debugfs_create_file("driver_filter", 0644, + dma_debug_dent, NULL, &filter_fops); + if (!filter_dent) + goto out_err; + + return 0; + +out_err: + debugfs_remove_recursive(dma_debug_dent); + + return -ENOMEM; +} + +static int device_dma_allocations(struct device *dev, struct dma_debug_entry **out_entry) +{ + struct dma_debug_entry *entry; + unsigned long flags; + int count = 0, i; + + for (i = 0; i < HASH_SIZE; ++i) { + spin_lock_irqsave(&dma_entry_hash[i].lock, flags); + list_for_each_entry(entry, &dma_entry_hash[i].list, list) { + if (entry->dev == dev) { + count += 1; + *out_entry = entry; + } + } + spin_unlock_irqrestore(&dma_entry_hash[i].lock, flags); + } + + return count; +} + +static int dma_debug_device_change(struct notifier_block *nb, unsigned long action, void *data) +{ + struct device *dev = data; + struct dma_debug_entry *uninitialized_var(entry); + int count; + + if (dma_debug_disabled()) + return 0; + + switch (action) { + case BUS_NOTIFY_UNBOUND_DRIVER: + count = device_dma_allocations(dev, &entry); + if (count == 0) + break; + err_printk(dev, entry, "DMA-API: device driver has pending " + "DMA allocations while released from device " + "[count=%d]\n" + "One of leaked entries details: " + "[device address=0x%016llx] [size=%llu bytes] " + "[mapped with %s] [mapped as %s]\n", + count, entry->dev_addr, entry->size, + dir2name[entry->direction], type2name[entry->type]); + break; + default: + break; + } + + return 0; +} + +void dma_debug_add_bus(struct bus_type *bus) +{ + struct notifier_block *nb; + + if (dma_debug_disabled()) + return; + + nb = kzalloc(sizeof(struct notifier_block), GFP_KERNEL); + if (nb == NULL) { + pr_err("dma_debug_add_bus: out of memory\n"); + return; + } + + nb->notifier_call = dma_debug_device_change; + + bus_register_notifier(bus, nb); +} + +static int dma_debug_init(void) +{ + int i; + + /* Do not use dma_debug_initialized here, since we really want to be + * called to set dma_debug_initialized + */ + if (global_disable) + return 0; + + for (i = 0; i < HASH_SIZE; ++i) { + INIT_LIST_HEAD(&dma_entry_hash[i].list); + spin_lock_init(&dma_entry_hash[i].lock); + } + + if (dma_debug_fs_init() != 0) { + pr_err("DMA-API: error creating debugfs entries - disabling\n"); + global_disable = true; + + return 0; + } + + if (prealloc_memory(nr_prealloc_entries) != 0) { + pr_err("DMA-API: debugging out of memory error - disabled\n"); + global_disable = true; + + return 0; + } + + nr_total_entries = num_free_entries; + + dma_debug_initialized = true; + + pr_info("DMA-API: debugging enabled by kernel config\n"); + return 0; +} +core_initcall(dma_debug_init); + +static __init int dma_debug_cmdline(char *str) +{ + if (!str) + return -EINVAL; + + if (strncmp(str, "off", 3) == 0) { + pr_info("DMA-API: debugging disabled on kernel command line\n"); + global_disable = true; + } + + return 0; +} + +static __init int dma_debug_entries_cmdline(char *str) +{ + if (!str) + return -EINVAL; + if (!get_option(&str, &nr_prealloc_entries)) + nr_prealloc_entries = PREALLOC_DMA_DEBUG_ENTRIES; + return 0; +} + +__setup("dma_debug=", dma_debug_cmdline); +__setup("dma_debug_entries=", dma_debug_entries_cmdline); + +static void check_unmap(struct dma_debug_entry *ref) +{ + struct dma_debug_entry *entry; + struct hash_bucket *bucket; + unsigned long flags; + + bucket = get_hash_bucket(ref, &flags); + entry = bucket_find_exact(bucket, ref); + + if (!entry) { + /* must drop lock before calling dma_mapping_error */ + put_hash_bucket(bucket, &flags); + + if (dma_mapping_error(ref->dev, ref->dev_addr)) { + err_printk(ref->dev, NULL, + "DMA-API: device driver tries to free an " + "invalid DMA memory address\n"); + } else { + err_printk(ref->dev, NULL, + "DMA-API: device driver tries to free DMA " + "memory it has not allocated [device " + "address=0x%016llx] [size=%llu bytes]\n", + ref->dev_addr, ref->size); + } + return; + } + + if (ref->size != entry->size) { + err_printk(ref->dev, entry, "DMA-API: device driver frees " + "DMA memory with different size " + "[device address=0x%016llx] [map size=%llu bytes] " + "[unmap size=%llu bytes]\n", + ref->dev_addr, entry->size, ref->size); + } + + if (ref->type != entry->type) { + err_printk(ref->dev, entry, "DMA-API: device driver frees " + "DMA memory with wrong function " + "[device address=0x%016llx] [size=%llu bytes] " + "[mapped as %s] [unmapped as %s]\n", + ref->dev_addr, ref->size, + type2name[entry->type], type2name[ref->type]); + } else if ((entry->type == dma_debug_coherent) && + (phys_addr(ref) != phys_addr(entry))) { + err_printk(ref->dev, entry, "DMA-API: device driver frees " + "DMA memory with different CPU address " + "[device address=0x%016llx] [size=%llu bytes] " + "[cpu alloc address=0x%016llx] " + "[cpu free address=0x%016llx]", + ref->dev_addr, ref->size, + phys_addr(entry), + phys_addr(ref)); + } + + if (ref->sg_call_ents && ref->type == dma_debug_sg && + ref->sg_call_ents != entry->sg_call_ents) { + err_printk(ref->dev, entry, "DMA-API: device driver frees " + "DMA sg list with different entry count " + "[map count=%d] [unmap count=%d]\n", + entry->sg_call_ents, ref->sg_call_ents); + } + + /* + * This may be no bug in reality - but most implementations of the + * DMA API don't handle this properly, so check for it here + */ + if (ref->direction != entry->direction) { + err_printk(ref->dev, entry, "DMA-API: device driver frees " + "DMA memory with different direction " + "[device address=0x%016llx] [size=%llu bytes] " + "[mapped with %s] [unmapped with %s]\n", + ref->dev_addr, ref->size, + dir2name[entry->direction], + dir2name[ref->direction]); + } + + /* + * Drivers should use dma_mapping_error() to check the returned + * addresses of dma_map_single() and dma_map_page(). + * If not, print this warning message. See Documentation/DMA-API.txt. + */ + if (entry->map_err_type == MAP_ERR_NOT_CHECKED) { + err_printk(ref->dev, entry, + "DMA-API: device driver failed to check map error" + "[device address=0x%016llx] [size=%llu bytes] " + "[mapped as %s]", + ref->dev_addr, ref->size, + type2name[entry->type]); + } + + hash_bucket_del(entry); + dma_entry_free(entry); + + put_hash_bucket(bucket, &flags); +} + +static void check_for_stack(struct device *dev, + struct page *page, size_t offset) +{ + void *addr; + struct vm_struct *stack_vm_area = task_stack_vm_area(current); + + if (!stack_vm_area) { + /* Stack is direct-mapped. */ + if (PageHighMem(page)) + return; + addr = page_address(page) + offset; + if (object_is_on_stack(addr)) + err_printk(dev, NULL, "DMA-API: device driver maps memory from stack [addr=%p]\n", addr); + } else { + /* Stack is vmalloced. */ + int i; + + for (i = 0; i < stack_vm_area->nr_pages; i++) { + if (page != stack_vm_area->pages[i]) + continue; + + addr = (u8 *)current->stack + i * PAGE_SIZE + offset; + err_printk(dev, NULL, "DMA-API: device driver maps memory from stack [probable addr=%p]\n", addr); + break; + } + } +} + +static inline bool overlap(void *addr, unsigned long len, void *start, void *end) +{ + unsigned long a1 = (unsigned long)addr; + unsigned long b1 = a1 + len; + unsigned long a2 = (unsigned long)start; + unsigned long b2 = (unsigned long)end; + + return !(b1 <= a2 || a1 >= b2); +} + +static void check_for_illegal_area(struct device *dev, void *addr, unsigned long len) +{ + if (overlap(addr, len, _stext, _etext) || + overlap(addr, len, __start_rodata, __end_rodata)) + err_printk(dev, NULL, "DMA-API: device driver maps memory from kernel text or rodata [addr=%p] [len=%lu]\n", addr, len); +} + +static void check_sync(struct device *dev, + struct dma_debug_entry *ref, + bool to_cpu) +{ + struct dma_debug_entry *entry; + struct hash_bucket *bucket; + unsigned long flags; + + bucket = get_hash_bucket(ref, &flags); + + entry = bucket_find_contain(&bucket, ref, &flags); + + if (!entry) { + err_printk(dev, NULL, "DMA-API: device driver tries " + "to sync DMA memory it has not allocated " + "[device address=0x%016llx] [size=%llu bytes]\n", + (unsigned long long)ref->dev_addr, ref->size); + goto out; + } + + if (ref->size > entry->size) { + err_printk(dev, entry, "DMA-API: device driver syncs" + " DMA memory outside allocated range " + "[device address=0x%016llx] " + "[allocation size=%llu bytes] " + "[sync offset+size=%llu]\n", + entry->dev_addr, entry->size, + ref->size); + } + + if (entry->direction == DMA_BIDIRECTIONAL) + goto out; + + if (ref->direction != entry->direction) { + err_printk(dev, entry, "DMA-API: device driver syncs " + "DMA memory with different direction " + "[device address=0x%016llx] [size=%llu bytes] " + "[mapped with %s] [synced with %s]\n", + (unsigned long long)ref->dev_addr, entry->size, + dir2name[entry->direction], + dir2name[ref->direction]); + } + + if (to_cpu && !(entry->direction == DMA_FROM_DEVICE) && + !(ref->direction == DMA_TO_DEVICE)) + err_printk(dev, entry, "DMA-API: device driver syncs " + "device read-only DMA memory for cpu " + "[device address=0x%016llx] [size=%llu bytes] " + "[mapped with %s] [synced with %s]\n", + (unsigned long long)ref->dev_addr, entry->size, + dir2name[entry->direction], + dir2name[ref->direction]); + + if (!to_cpu && !(entry->direction == DMA_TO_DEVICE) && + !(ref->direction == DMA_FROM_DEVICE)) + err_printk(dev, entry, "DMA-API: device driver syncs " + "device write-only DMA memory to device " + "[device address=0x%016llx] [size=%llu bytes] " + "[mapped with %s] [synced with %s]\n", + (unsigned long long)ref->dev_addr, entry->size, + dir2name[entry->direction], + dir2name[ref->direction]); + + if (ref->sg_call_ents && ref->type == dma_debug_sg && + ref->sg_call_ents != entry->sg_call_ents) { + err_printk(ref->dev, entry, "DMA-API: device driver syncs " + "DMA sg list with different entry count " + "[map count=%d] [sync count=%d]\n", + entry->sg_call_ents, ref->sg_call_ents); + } + +out: + put_hash_bucket(bucket, &flags); +} + +static void check_sg_segment(struct device *dev, struct scatterlist *sg) +{ +#ifdef CONFIG_DMA_API_DEBUG_SG + unsigned int max_seg = dma_get_max_seg_size(dev); + u64 start, end, boundary = dma_get_seg_boundary(dev); + + /* + * Either the driver forgot to set dma_parms appropriately, or + * whoever generated the list forgot to check them. + */ + if (sg->length > max_seg) + err_printk(dev, NULL, "DMA-API: mapping sg segment longer than device claims to support [len=%u] [max=%u]\n", + sg->length, max_seg); + /* + * In some cases this could potentially be the DMA API + * implementation's fault, but it would usually imply that + * the scatterlist was built inappropriately to begin with. + */ + start = sg_dma_address(sg); + end = start + sg_dma_len(sg) - 1; + if ((start ^ end) & ~boundary) + err_printk(dev, NULL, "DMA-API: mapping sg segment across boundary [start=0x%016llx] [end=0x%016llx] [boundary=0x%016llx]\n", + start, end, boundary); +#endif +} + +void debug_dma_map_page(struct device *dev, struct page *page, size_t offset, + size_t size, int direction, dma_addr_t dma_addr, + bool map_single) +{ + struct dma_debug_entry *entry; + + if (unlikely(dma_debug_disabled())) + return; + + if (dma_mapping_error(dev, dma_addr)) + return; + + entry = dma_entry_alloc(); + if (!entry) + return; + + entry->dev = dev; + entry->type = dma_debug_page; + entry->pfn = page_to_pfn(page); + entry->offset = offset, + entry->dev_addr = dma_addr; + entry->size = size; + entry->direction = direction; + entry->map_err_type = MAP_ERR_NOT_CHECKED; + + if (map_single) + entry->type = dma_debug_single; + + check_for_stack(dev, page, offset); + + if (!PageHighMem(page)) { + void *addr = page_address(page) + offset; + + check_for_illegal_area(dev, addr, size); + } + + add_dma_entry(entry); +} +EXPORT_SYMBOL(debug_dma_map_page); + +void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + struct dma_debug_entry ref; + struct dma_debug_entry *entry; + struct hash_bucket *bucket; + unsigned long flags; + + if (unlikely(dma_debug_disabled())) + return; + + ref.dev = dev; + ref.dev_addr = dma_addr; + bucket = get_hash_bucket(&ref, &flags); + + list_for_each_entry(entry, &bucket->list, list) { + if (!exact_match(&ref, entry)) + continue; + + /* + * The same physical address can be mapped multiple + * times. Without a hardware IOMMU this results in the + * same device addresses being put into the dma-debug + * hash multiple times too. This can result in false + * positives being reported. Therefore we implement a + * best-fit algorithm here which updates the first entry + * from the hash which fits the reference value and is + * not currently listed as being checked. + */ + if (entry->map_err_type == MAP_ERR_NOT_CHECKED) { + entry->map_err_type = MAP_ERR_CHECKED; + break; + } + } + + put_hash_bucket(bucket, &flags); +} +EXPORT_SYMBOL(debug_dma_mapping_error); + +void debug_dma_unmap_page(struct device *dev, dma_addr_t addr, + size_t size, int direction, bool map_single) +{ + struct dma_debug_entry ref = { + .type = dma_debug_page, + .dev = dev, + .dev_addr = addr, + .size = size, + .direction = direction, + }; + + if (unlikely(dma_debug_disabled())) + return; + + if (map_single) + ref.type = dma_debug_single; + + check_unmap(&ref); +} +EXPORT_SYMBOL(debug_dma_unmap_page); + +void debug_dma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, int mapped_ents, int direction) +{ + struct dma_debug_entry *entry; + struct scatterlist *s; + int i; + + if (unlikely(dma_debug_disabled())) + return; + + for_each_sg(sg, s, mapped_ents, i) { + entry = dma_entry_alloc(); + if (!entry) + return; + + entry->type = dma_debug_sg; + entry->dev = dev; + entry->pfn = page_to_pfn(sg_page(s)); + entry->offset = s->offset, + entry->size = sg_dma_len(s); + entry->dev_addr = sg_dma_address(s); + entry->direction = direction; + entry->sg_call_ents = nents; + entry->sg_mapped_ents = mapped_ents; + + check_for_stack(dev, sg_page(s), s->offset); + + if (!PageHighMem(sg_page(s))) { + check_for_illegal_area(dev, sg_virt(s), sg_dma_len(s)); + } + + check_sg_segment(dev, s); + + add_dma_entry(entry); + } +} +EXPORT_SYMBOL(debug_dma_map_sg); + +static int get_nr_mapped_entries(struct device *dev, + struct dma_debug_entry *ref) +{ + struct dma_debug_entry *entry; + struct hash_bucket *bucket; + unsigned long flags; + int mapped_ents; + + bucket = get_hash_bucket(ref, &flags); + entry = bucket_find_exact(bucket, ref); + mapped_ents = 0; + + if (entry) + mapped_ents = entry->sg_mapped_ents; + put_hash_bucket(bucket, &flags); + + return mapped_ents; +} + +void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, + int nelems, int dir) +{ + struct scatterlist *s; + int mapped_ents = 0, i; + + if (unlikely(dma_debug_disabled())) + return; + + for_each_sg(sglist, s, nelems, i) { + + struct dma_debug_entry ref = { + .type = dma_debug_sg, + .dev = dev, + .pfn = page_to_pfn(sg_page(s)), + .offset = s->offset, + .dev_addr = sg_dma_address(s), + .size = sg_dma_len(s), + .direction = dir, + .sg_call_ents = nelems, + }; + + if (mapped_ents && i >= mapped_ents) + break; + + if (!i) + mapped_ents = get_nr_mapped_entries(dev, &ref); + + check_unmap(&ref); + } +} +EXPORT_SYMBOL(debug_dma_unmap_sg); + +void debug_dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t dma_addr, void *virt) +{ + struct dma_debug_entry *entry; + + if (unlikely(dma_debug_disabled())) + return; + + if (unlikely(virt == NULL)) + return; + + /* handle vmalloc and linear addresses */ + if (!is_vmalloc_addr(virt) && !virt_addr_valid(virt)) + return; + + entry = dma_entry_alloc(); + if (!entry) + return; + + entry->type = dma_debug_coherent; + entry->dev = dev; + entry->offset = offset_in_page(virt); + entry->size = size; + entry->dev_addr = dma_addr; + entry->direction = DMA_BIDIRECTIONAL; + + if (is_vmalloc_addr(virt)) + entry->pfn = vmalloc_to_pfn(virt); + else + entry->pfn = page_to_pfn(virt_to_page(virt)); + + add_dma_entry(entry); +} +EXPORT_SYMBOL(debug_dma_alloc_coherent); + +void debug_dma_free_coherent(struct device *dev, size_t size, + void *virt, dma_addr_t addr) +{ + struct dma_debug_entry ref = { + .type = dma_debug_coherent, + .dev = dev, + .offset = offset_in_page(virt), + .dev_addr = addr, + .size = size, + .direction = DMA_BIDIRECTIONAL, + }; + + /* handle vmalloc and linear addresses */ + if (!is_vmalloc_addr(virt) && !virt_addr_valid(virt)) + return; + + if (is_vmalloc_addr(virt)) + ref.pfn = vmalloc_to_pfn(virt); + else + ref.pfn = page_to_pfn(virt_to_page(virt)); + + if (unlikely(dma_debug_disabled())) + return; + + check_unmap(&ref); +} +EXPORT_SYMBOL(debug_dma_free_coherent); + +void debug_dma_map_resource(struct device *dev, phys_addr_t addr, size_t size, + int direction, dma_addr_t dma_addr) +{ + struct dma_debug_entry *entry; + + if (unlikely(dma_debug_disabled())) + return; + + entry = dma_entry_alloc(); + if (!entry) + return; + + entry->type = dma_debug_resource; + entry->dev = dev; + entry->pfn = PHYS_PFN(addr); + entry->offset = offset_in_page(addr); + entry->size = size; + entry->dev_addr = dma_addr; + entry->direction = direction; + entry->map_err_type = MAP_ERR_NOT_CHECKED; + + add_dma_entry(entry); +} +EXPORT_SYMBOL(debug_dma_map_resource); + +void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr, + size_t size, int direction) +{ + struct dma_debug_entry ref = { + .type = dma_debug_resource, + .dev = dev, + .dev_addr = dma_addr, + .size = size, + .direction = direction, + }; + + if (unlikely(dma_debug_disabled())) + return; + + check_unmap(&ref); +} +EXPORT_SYMBOL(debug_dma_unmap_resource); + +void debug_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, + size_t size, int direction) +{ + struct dma_debug_entry ref; + + if (unlikely(dma_debug_disabled())) + return; + + ref.type = dma_debug_single; + ref.dev = dev; + ref.dev_addr = dma_handle; + ref.size = size; + ref.direction = direction; + ref.sg_call_ents = 0; + + check_sync(dev, &ref, true); +} +EXPORT_SYMBOL(debug_dma_sync_single_for_cpu); + +void debug_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + int direction) +{ + struct dma_debug_entry ref; + + if (unlikely(dma_debug_disabled())) + return; + + ref.type = dma_debug_single; + ref.dev = dev; + ref.dev_addr = dma_handle; + ref.size = size; + ref.direction = direction; + ref.sg_call_ents = 0; + + check_sync(dev, &ref, false); +} +EXPORT_SYMBOL(debug_dma_sync_single_for_device); + +void debug_dma_sync_single_range_for_cpu(struct device *dev, + dma_addr_t dma_handle, + unsigned long offset, size_t size, + int direction) +{ + struct dma_debug_entry ref; + + if (unlikely(dma_debug_disabled())) + return; + + ref.type = dma_debug_single; + ref.dev = dev; + ref.dev_addr = dma_handle; + ref.size = offset + size; + ref.direction = direction; + ref.sg_call_ents = 0; + + check_sync(dev, &ref, true); +} +EXPORT_SYMBOL(debug_dma_sync_single_range_for_cpu); + +void debug_dma_sync_single_range_for_device(struct device *dev, + dma_addr_t dma_handle, + unsigned long offset, + size_t size, int direction) +{ + struct dma_debug_entry ref; + + if (unlikely(dma_debug_disabled())) + return; + + ref.type = dma_debug_single; + ref.dev = dev; + ref.dev_addr = dma_handle; + ref.size = offset + size; + ref.direction = direction; + ref.sg_call_ents = 0; + + check_sync(dev, &ref, false); +} +EXPORT_SYMBOL(debug_dma_sync_single_range_for_device); + +void debug_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, + int nelems, int direction) +{ + struct scatterlist *s; + int mapped_ents = 0, i; + + if (unlikely(dma_debug_disabled())) + return; + + for_each_sg(sg, s, nelems, i) { + + struct dma_debug_entry ref = { + .type = dma_debug_sg, + .dev = dev, + .pfn = page_to_pfn(sg_page(s)), + .offset = s->offset, + .dev_addr = sg_dma_address(s), + .size = sg_dma_len(s), + .direction = direction, + .sg_call_ents = nelems, + }; + + if (!i) + mapped_ents = get_nr_mapped_entries(dev, &ref); + + if (i >= mapped_ents) + break; + + check_sync(dev, &ref, true); + } +} +EXPORT_SYMBOL(debug_dma_sync_sg_for_cpu); + +void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, + int nelems, int direction) +{ + struct scatterlist *s; + int mapped_ents = 0, i; + + if (unlikely(dma_debug_disabled())) + return; + + for_each_sg(sg, s, nelems, i) { + + struct dma_debug_entry ref = { + .type = dma_debug_sg, + .dev = dev, + .pfn = page_to_pfn(sg_page(s)), + .offset = s->offset, + .dev_addr = sg_dma_address(s), + .size = sg_dma_len(s), + .direction = direction, + .sg_call_ents = nelems, + }; + if (!i) + mapped_ents = get_nr_mapped_entries(dev, &ref); + + if (i >= mapped_ents) + break; + + check_sync(dev, &ref, false); + } +} +EXPORT_SYMBOL(debug_dma_sync_sg_for_device); + +static int __init dma_debug_driver_setup(char *str) +{ + int i; + + for (i = 0; i < NAME_MAX_LEN - 1; ++i, ++str) { + current_driver_name[i] = *str; + if (*str == 0) + break; + } + + if (current_driver_name[0]) + pr_info("DMA-API: enable driver filter for driver [%s]\n", + current_driver_name); + + + return 1; +} +__setup("dma_debug_driver=", dma_debug_driver_setup); diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c new file mode 100644 index 000000000000..8be8106270c2 --- /dev/null +++ b/kernel/dma/direct.c @@ -0,0 +1,204 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * DMA operations that map physical memory directly without using an IOMMU or + * flushing caches. + */ +#include +#include +#include +#include +#include +#include +#include + +#define DIRECT_MAPPING_ERROR 0 + +/* + * Most architectures use ZONE_DMA for the first 16 Megabytes, but + * some use it for entirely different regions: + */ +#ifndef ARCH_ZONE_DMA_BITS +#define ARCH_ZONE_DMA_BITS 24 +#endif + +/* + * For AMD SEV all DMA must be to unencrypted addresses. + */ +static inline bool force_dma_unencrypted(void) +{ + return sev_active(); +} + +static bool +check_addr(struct device *dev, dma_addr_t dma_addr, size_t size, + const char *caller) +{ + if (unlikely(dev && !dma_capable(dev, dma_addr, size))) { + if (!dev->dma_mask) { + dev_err(dev, + "%s: call on device without dma_mask\n", + caller); + return false; + } + + if (*dev->dma_mask >= DMA_BIT_MASK(32)) { + dev_err(dev, + "%s: overflow %pad+%zu of device mask %llx\n", + caller, &dma_addr, size, *dev->dma_mask); + } + return false; + } + return true; +} + +static bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size) +{ + dma_addr_t addr = force_dma_unencrypted() ? + __phys_to_dma(dev, phys) : phys_to_dma(dev, phys); + return addr + size - 1 <= dev->coherent_dma_mask; +} + +void *dma_direct_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, + gfp_t gfp, unsigned long attrs) +{ + unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT; + int page_order = get_order(size); + struct page *page = NULL; + void *ret; + + /* we always manually zero the memory once we are done: */ + gfp &= ~__GFP_ZERO; + + /* GFP_DMA32 and GFP_DMA are no ops without the corresponding zones: */ + if (dev->coherent_dma_mask <= DMA_BIT_MASK(ARCH_ZONE_DMA_BITS)) + gfp |= GFP_DMA; + if (dev->coherent_dma_mask <= DMA_BIT_MASK(32) && !(gfp & GFP_DMA)) + gfp |= GFP_DMA32; + +again: + /* CMA can be used only in the context which permits sleeping */ + if (gfpflags_allow_blocking(gfp)) { + page = dma_alloc_from_contiguous(dev, count, page_order, gfp); + if (page && !dma_coherent_ok(dev, page_to_phys(page), size)) { + dma_release_from_contiguous(dev, page, count); + page = NULL; + } + } + if (!page) + page = alloc_pages_node(dev_to_node(dev), gfp, page_order); + + if (page && !dma_coherent_ok(dev, page_to_phys(page), size)) { + __free_pages(page, page_order); + page = NULL; + + if (IS_ENABLED(CONFIG_ZONE_DMA32) && + dev->coherent_dma_mask < DMA_BIT_MASK(64) && + !(gfp & (GFP_DMA32 | GFP_DMA))) { + gfp |= GFP_DMA32; + goto again; + } + + if (IS_ENABLED(CONFIG_ZONE_DMA) && + dev->coherent_dma_mask < DMA_BIT_MASK(32) && + !(gfp & GFP_DMA)) { + gfp = (gfp & ~GFP_DMA32) | GFP_DMA; + goto again; + } + } + + if (!page) + return NULL; + ret = page_address(page); + if (force_dma_unencrypted()) { + set_memory_decrypted((unsigned long)ret, 1 << page_order); + *dma_handle = __phys_to_dma(dev, page_to_phys(page)); + } else { + *dma_handle = phys_to_dma(dev, page_to_phys(page)); + } + memset(ret, 0, size); + return ret; +} + +/* + * NOTE: this function must never look at the dma_addr argument, because we want + * to be able to use it as a helper for iommu implementations as well. + */ +void dma_direct_free(struct device *dev, size_t size, void *cpu_addr, + dma_addr_t dma_addr, unsigned long attrs) +{ + unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT; + unsigned int page_order = get_order(size); + + if (force_dma_unencrypted()) + set_memory_encrypted((unsigned long)cpu_addr, 1 << page_order); + if (!dma_release_from_contiguous(dev, virt_to_page(cpu_addr), count)) + free_pages((unsigned long)cpu_addr, page_order); +} + +dma_addr_t dma_direct_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + dma_addr_t dma_addr = phys_to_dma(dev, page_to_phys(page)) + offset; + + if (!check_addr(dev, dma_addr, size, __func__)) + return DIRECT_MAPPING_ERROR; + return dma_addr; +} + +int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents, + enum dma_data_direction dir, unsigned long attrs) +{ + int i; + struct scatterlist *sg; + + for_each_sg(sgl, sg, nents, i) { + BUG_ON(!sg_page(sg)); + + sg_dma_address(sg) = phys_to_dma(dev, sg_phys(sg)); + if (!check_addr(dev, sg_dma_address(sg), sg->length, __func__)) + return 0; + sg_dma_len(sg) = sg->length; + } + + return nents; +} + +int dma_direct_supported(struct device *dev, u64 mask) +{ +#ifdef CONFIG_ZONE_DMA + if (mask < DMA_BIT_MASK(ARCH_ZONE_DMA_BITS)) + return 0; +#else + /* + * Because 32-bit DMA masks are so common we expect every architecture + * to be able to satisfy them - either by not supporting more physical + * memory, or by providing a ZONE_DMA32. If neither is the case, the + * architecture needs to use an IOMMU instead of the direct mapping. + */ + if (mask < DMA_BIT_MASK(32)) + return 0; +#endif + /* + * Various PCI/PCIe bridges have broken support for > 32bit DMA even + * if the device itself might support it. + */ + if (dev->dma_32bit_limit && mask > DMA_BIT_MASK(32)) + return 0; + return 1; +} + +int dma_direct_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + return dma_addr == DIRECT_MAPPING_ERROR; +} + +const struct dma_map_ops dma_direct_ops = { + .alloc = dma_direct_alloc, + .free = dma_direct_free, + .map_page = dma_direct_map_page, + .map_sg = dma_direct_map_sg, + .dma_supported = dma_direct_supported, + .mapping_error = dma_direct_mapping_error, +}; +EXPORT_SYMBOL(dma_direct_ops); diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c new file mode 100644 index 000000000000..d2a92ddaac4d --- /dev/null +++ b/kernel/dma/mapping.c @@ -0,0 +1,345 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * arch-independent dma-mapping routines + * + * Copyright (c) 2006 SUSE Linux Products GmbH + * Copyright (c) 2006 Tejun Heo + */ + +#include +#include +#include +#include +#include +#include +#include + +/* + * Managed DMA API + */ +struct dma_devres { + size_t size; + void *vaddr; + dma_addr_t dma_handle; + unsigned long attrs; +}; + +static void dmam_release(struct device *dev, void *res) +{ + struct dma_devres *this = res; + + dma_free_attrs(dev, this->size, this->vaddr, this->dma_handle, + this->attrs); +} + +static int dmam_match(struct device *dev, void *res, void *match_data) +{ + struct dma_devres *this = res, *match = match_data; + + if (this->vaddr == match->vaddr) { + WARN_ON(this->size != match->size || + this->dma_handle != match->dma_handle); + return 1; + } + return 0; +} + +/** + * dmam_alloc_coherent - Managed dma_alloc_coherent() + * @dev: Device to allocate coherent memory for + * @size: Size of allocation + * @dma_handle: Out argument for allocated DMA handle + * @gfp: Allocation flags + * + * Managed dma_alloc_coherent(). Memory allocated using this function + * will be automatically released on driver detach. + * + * RETURNS: + * Pointer to allocated memory on success, NULL on failure. + */ +void *dmam_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp) +{ + struct dma_devres *dr; + void *vaddr; + + dr = devres_alloc(dmam_release, sizeof(*dr), gfp); + if (!dr) + return NULL; + + vaddr = dma_alloc_coherent(dev, size, dma_handle, gfp); + if (!vaddr) { + devres_free(dr); + return NULL; + } + + dr->vaddr = vaddr; + dr->dma_handle = *dma_handle; + dr->size = size; + + devres_add(dev, dr); + + return vaddr; +} +EXPORT_SYMBOL(dmam_alloc_coherent); + +/** + * dmam_free_coherent - Managed dma_free_coherent() + * @dev: Device to free coherent memory for + * @size: Size of allocation + * @vaddr: Virtual address of the memory to free + * @dma_handle: DMA handle of the memory to free + * + * Managed dma_free_coherent(). + */ +void dmam_free_coherent(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle) +{ + struct dma_devres match_data = { size, vaddr, dma_handle }; + + dma_free_coherent(dev, size, vaddr, dma_handle); + WARN_ON(devres_destroy(dev, dmam_release, dmam_match, &match_data)); +} +EXPORT_SYMBOL(dmam_free_coherent); + +/** + * dmam_alloc_attrs - Managed dma_alloc_attrs() + * @dev: Device to allocate non_coherent memory for + * @size: Size of allocation + * @dma_handle: Out argument for allocated DMA handle + * @gfp: Allocation flags + * @attrs: Flags in the DMA_ATTR_* namespace. + * + * Managed dma_alloc_attrs(). Memory allocated using this function will be + * automatically released on driver detach. + * + * RETURNS: + * Pointer to allocated memory on success, NULL on failure. + */ +void *dmam_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle, + gfp_t gfp, unsigned long attrs) +{ + struct dma_devres *dr; + void *vaddr; + + dr = devres_alloc(dmam_release, sizeof(*dr), gfp); + if (!dr) + return NULL; + + vaddr = dma_alloc_attrs(dev, size, dma_handle, gfp, attrs); + if (!vaddr) { + devres_free(dr); + return NULL; + } + + dr->vaddr = vaddr; + dr->dma_handle = *dma_handle; + dr->size = size; + dr->attrs = attrs; + + devres_add(dev, dr); + + return vaddr; +} +EXPORT_SYMBOL(dmam_alloc_attrs); + +#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT + +static void dmam_coherent_decl_release(struct device *dev, void *res) +{ + dma_release_declared_memory(dev); +} + +/** + * dmam_declare_coherent_memory - Managed dma_declare_coherent_memory() + * @dev: Device to declare coherent memory for + * @phys_addr: Physical address of coherent memory to be declared + * @device_addr: Device address of coherent memory to be declared + * @size: Size of coherent memory to be declared + * @flags: Flags + * + * Managed dma_declare_coherent_memory(). + * + * RETURNS: + * 0 on success, -errno on failure. + */ +int dmam_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, + dma_addr_t device_addr, size_t size, int flags) +{ + void *res; + int rc; + + res = devres_alloc(dmam_coherent_decl_release, 0, GFP_KERNEL); + if (!res) + return -ENOMEM; + + rc = dma_declare_coherent_memory(dev, phys_addr, device_addr, size, + flags); + if (!rc) + devres_add(dev, res); + else + devres_free(res); + + return rc; +} +EXPORT_SYMBOL(dmam_declare_coherent_memory); + +/** + * dmam_release_declared_memory - Managed dma_release_declared_memory(). + * @dev: Device to release declared coherent memory for + * + * Managed dmam_release_declared_memory(). + */ +void dmam_release_declared_memory(struct device *dev) +{ + WARN_ON(devres_destroy(dev, dmam_coherent_decl_release, NULL, NULL)); +} +EXPORT_SYMBOL(dmam_release_declared_memory); + +#endif + +/* + * Create scatter-list for the already allocated DMA buffer. + */ +int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, + void *cpu_addr, dma_addr_t handle, size_t size) +{ + struct page *page = virt_to_page(cpu_addr); + int ret; + + ret = sg_alloc_table(sgt, 1, GFP_KERNEL); + if (unlikely(ret)) + return ret; + + sg_set_page(sgt->sgl, page, PAGE_ALIGN(size), 0); + return 0; +} +EXPORT_SYMBOL(dma_common_get_sgtable); + +/* + * Create userspace mapping for the DMA-coherent memory. + */ +int dma_common_mmap(struct device *dev, struct vm_area_struct *vma, + void *cpu_addr, dma_addr_t dma_addr, size_t size) +{ + int ret = -ENXIO; +#ifndef CONFIG_ARCH_NO_COHERENT_DMA_MMAP + unsigned long user_count = vma_pages(vma); + unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT; + unsigned long off = vma->vm_pgoff; + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + + if (dma_mmap_from_dev_coherent(dev, vma, cpu_addr, size, &ret)) + return ret; + + if (off < count && user_count <= (count - off)) + ret = remap_pfn_range(vma, vma->vm_start, + page_to_pfn(virt_to_page(cpu_addr)) + off, + user_count << PAGE_SHIFT, + vma->vm_page_prot); +#endif /* !CONFIG_ARCH_NO_COHERENT_DMA_MMAP */ + + return ret; +} +EXPORT_SYMBOL(dma_common_mmap); + +#ifdef CONFIG_MMU +static struct vm_struct *__dma_common_pages_remap(struct page **pages, + size_t size, unsigned long vm_flags, pgprot_t prot, + const void *caller) +{ + struct vm_struct *area; + + area = get_vm_area_caller(size, vm_flags, caller); + if (!area) + return NULL; + + if (map_vm_area(area, prot, pages)) { + vunmap(area->addr); + return NULL; + } + + return area; +} + +/* + * remaps an array of PAGE_SIZE pages into another vm_area + * Cannot be used in non-sleeping contexts + */ +void *dma_common_pages_remap(struct page **pages, size_t size, + unsigned long vm_flags, pgprot_t prot, + const void *caller) +{ + struct vm_struct *area; + + area = __dma_common_pages_remap(pages, size, vm_flags, prot, caller); + if (!area) + return NULL; + + area->pages = pages; + + return area->addr; +} + +/* + * remaps an allocated contiguous region into another vm_area. + * Cannot be used in non-sleeping contexts + */ + +void *dma_common_contiguous_remap(struct page *page, size_t size, + unsigned long vm_flags, + pgprot_t prot, const void *caller) +{ + int i; + struct page **pages; + struct vm_struct *area; + + pages = kmalloc(sizeof(struct page *) << get_order(size), GFP_KERNEL); + if (!pages) + return NULL; + + for (i = 0; i < (size >> PAGE_SHIFT); i++) + pages[i] = nth_page(page, i); + + area = __dma_common_pages_remap(pages, size, vm_flags, prot, caller); + + kfree(pages); + + if (!area) + return NULL; + return area->addr; +} + +/* + * unmaps a range previously mapped by dma_common_*_remap + */ +void dma_common_free_remap(void *cpu_addr, size_t size, unsigned long vm_flags) +{ + struct vm_struct *area = find_vm_area(cpu_addr); + + if (!area || (area->flags & vm_flags) != vm_flags) { + WARN(1, "trying to free invalid coherent area: %p\n", cpu_addr); + return; + } + + unmap_kernel_range((unsigned long)cpu_addr, PAGE_ALIGN(size)); + vunmap(cpu_addr); +} +#endif + +/* + * enables DMA API use for a device + */ +int dma_configure(struct device *dev) +{ + if (dev->bus->dma_configure) + return dev->bus->dma_configure(dev); + return 0; +} + +void dma_deconfigure(struct device *dev) +{ + of_dma_deconfigure(dev); + acpi_dma_deconfigure(dev); +} diff --git a/kernel/dma/noncoherent.c b/kernel/dma/noncoherent.c new file mode 100644 index 000000000000..79e9a757387f --- /dev/null +++ b/kernel/dma/noncoherent.c @@ -0,0 +1,102 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 Christoph Hellwig. + * + * DMA operations that map physical memory directly without providing cache + * coherence. + */ +#include +#include +#include +#include +#include + +static void dma_noncoherent_sync_single_for_device(struct device *dev, + dma_addr_t addr, size_t size, enum dma_data_direction dir) +{ + arch_sync_dma_for_device(dev, dma_to_phys(dev, addr), size, dir); +} + +static void dma_noncoherent_sync_sg_for_device(struct device *dev, + struct scatterlist *sgl, int nents, enum dma_data_direction dir) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sgl, sg, nents, i) + arch_sync_dma_for_device(dev, sg_phys(sg), sg->length, dir); +} + +static dma_addr_t dma_noncoherent_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + dma_addr_t addr; + + addr = dma_direct_map_page(dev, page, offset, size, dir, attrs); + if (!dma_mapping_error(dev, addr) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) + arch_sync_dma_for_device(dev, page_to_phys(page) + offset, + size, dir); + return addr; +} + +static int dma_noncoherent_map_sg(struct device *dev, struct scatterlist *sgl, + int nents, enum dma_data_direction dir, unsigned long attrs) +{ + nents = dma_direct_map_sg(dev, sgl, nents, dir, attrs); + if (nents > 0 && !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) + dma_noncoherent_sync_sg_for_device(dev, sgl, nents, dir); + return nents; +} + +#ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU +static void dma_noncoherent_sync_single_for_cpu(struct device *dev, + dma_addr_t addr, size_t size, enum dma_data_direction dir) +{ + arch_sync_dma_for_cpu(dev, dma_to_phys(dev, addr), size, dir); +} + +static void dma_noncoherent_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sgl, int nents, enum dma_data_direction dir) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sgl, sg, nents, i) + arch_sync_dma_for_cpu(dev, sg_phys(sg), sg->length, dir); +} + +static void dma_noncoherent_unmap_page(struct device *dev, dma_addr_t addr, + size_t size, enum dma_data_direction dir, unsigned long attrs) +{ + if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) + dma_noncoherent_sync_single_for_cpu(dev, addr, size, dir); +} + +static void dma_noncoherent_unmap_sg(struct device *dev, struct scatterlist *sgl, + int nents, enum dma_data_direction dir, unsigned long attrs) +{ + if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) + dma_noncoherent_sync_sg_for_cpu(dev, sgl, nents, dir); +} +#endif + +const struct dma_map_ops dma_noncoherent_ops = { + .alloc = arch_dma_alloc, + .free = arch_dma_free, + .mmap = arch_dma_mmap, + .sync_single_for_device = dma_noncoherent_sync_single_for_device, + .sync_sg_for_device = dma_noncoherent_sync_sg_for_device, + .map_page = dma_noncoherent_map_page, + .map_sg = dma_noncoherent_map_sg, +#ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU + .sync_single_for_cpu = dma_noncoherent_sync_single_for_cpu, + .sync_sg_for_cpu = dma_noncoherent_sync_sg_for_cpu, + .unmap_page = dma_noncoherent_unmap_page, + .unmap_sg = dma_noncoherent_unmap_sg, +#endif + .dma_supported = dma_direct_supported, + .mapping_error = dma_direct_mapping_error, + .cache_sync = arch_dma_cache_sync, +}; +EXPORT_SYMBOL(dma_noncoherent_ops); diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c new file mode 100644 index 000000000000..04b68d9dffac --- /dev/null +++ b/kernel/dma/swiotlb.c @@ -0,0 +1,1087 @@ +/* + * Dynamic DMA mapping support. + * + * This implementation is a fallback for platforms that do not support + * I/O TLBs (aka DMA address translation hardware). + * Copyright (C) 2000 Asit Mallick + * Copyright (C) 2000 Goutham Rao + * Copyright (C) 2000, 2003 Hewlett-Packard Co + * David Mosberger-Tang + * + * 03/05/07 davidm Switch from PCI-DMA to generic device DMA API. + * 00/12/13 davidm Rename to swiotlb.c and add mark_clean() to avoid + * unnecessary i-cache flushing. + * 04/07/.. ak Better overflow handling. Assorted fixes. + * 05/09/10 linville Add support for syncing ranges, support syncing for + * DMA_BIDIRECTIONAL mappings, miscellaneous cleanup. + * 08/12/11 beckyb Add highmem support + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include + +#define CREATE_TRACE_POINTS +#include + +#define OFFSET(val,align) ((unsigned long) \ + ( (val) & ( (align) - 1))) + +#define SLABS_PER_PAGE (1 << (PAGE_SHIFT - IO_TLB_SHIFT)) + +/* + * Minimum IO TLB size to bother booting with. Systems with mainly + * 64bit capable cards will only lightly use the swiotlb. If we can't + * allocate a contiguous 1MB, we're probably in trouble anyway. + */ +#define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT) + +enum swiotlb_force swiotlb_force; + +/* + * Used to do a quick range check in swiotlb_tbl_unmap_single and + * swiotlb_tbl_sync_single_*, to see if the memory was in fact allocated by this + * API. + */ +static phys_addr_t io_tlb_start, io_tlb_end; + +/* + * The number of IO TLB blocks (in groups of 64) between io_tlb_start and + * io_tlb_end. This is command line adjustable via setup_io_tlb_npages. + */ +static unsigned long io_tlb_nslabs; + +/* + * When the IOMMU overflows we return a fallback buffer. This sets the size. + */ +static unsigned long io_tlb_overflow = 32*1024; + +static phys_addr_t io_tlb_overflow_buffer; + +/* + * This is a free list describing the number of free entries available from + * each index + */ +static unsigned int *io_tlb_list; +static unsigned int io_tlb_index; + +/* + * Max segment that we can provide which (if pages are contingous) will + * not be bounced (unless SWIOTLB_FORCE is set). + */ +unsigned int max_segment; + +/* + * We need to save away the original address corresponding to a mapped entry + * for the sync operations. + */ +#define INVALID_PHYS_ADDR (~(phys_addr_t)0) +static phys_addr_t *io_tlb_orig_addr; + +/* + * Protect the above data structures in the map and unmap calls + */ +static DEFINE_SPINLOCK(io_tlb_lock); + +static int late_alloc; + +static int __init +setup_io_tlb_npages(char *str) +{ + if (isdigit(*str)) { + io_tlb_nslabs = simple_strtoul(str, &str, 0); + /* avoid tail segment of size < IO_TLB_SEGSIZE */ + io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE); + } + if (*str == ',') + ++str; + if (!strcmp(str, "force")) { + swiotlb_force = SWIOTLB_FORCE; + } else if (!strcmp(str, "noforce")) { + swiotlb_force = SWIOTLB_NO_FORCE; + io_tlb_nslabs = 1; + } + + return 0; +} +early_param("swiotlb", setup_io_tlb_npages); +/* make io_tlb_overflow tunable too? */ + +unsigned long swiotlb_nr_tbl(void) +{ + return io_tlb_nslabs; +} +EXPORT_SYMBOL_GPL(swiotlb_nr_tbl); + +unsigned int swiotlb_max_segment(void) +{ + return max_segment; +} +EXPORT_SYMBOL_GPL(swiotlb_max_segment); + +void swiotlb_set_max_segment(unsigned int val) +{ + if (swiotlb_force == SWIOTLB_FORCE) + max_segment = 1; + else + max_segment = rounddown(val, PAGE_SIZE); +} + +/* default to 64MB */ +#define IO_TLB_DEFAULT_SIZE (64UL<<20) +unsigned long swiotlb_size_or_default(void) +{ + unsigned long size; + + size = io_tlb_nslabs << IO_TLB_SHIFT; + + return size ? size : (IO_TLB_DEFAULT_SIZE); +} + +static bool no_iotlb_memory; + +void swiotlb_print_info(void) +{ + unsigned long bytes = io_tlb_nslabs << IO_TLB_SHIFT; + unsigned char *vstart, *vend; + + if (no_iotlb_memory) { + pr_warn("software IO TLB: No low mem\n"); + return; + } + + vstart = phys_to_virt(io_tlb_start); + vend = phys_to_virt(io_tlb_end); + + printk(KERN_INFO "software IO TLB [mem %#010llx-%#010llx] (%luMB) mapped at [%p-%p]\n", + (unsigned long long)io_tlb_start, + (unsigned long long)io_tlb_end, + bytes >> 20, vstart, vend - 1); +} + +/* + * Early SWIOTLB allocation may be too early to allow an architecture to + * perform the desired operations. This function allows the architecture to + * call SWIOTLB when the operations are possible. It needs to be called + * before the SWIOTLB memory is used. + */ +void __init swiotlb_update_mem_attributes(void) +{ + void *vaddr; + unsigned long bytes; + + if (no_iotlb_memory || late_alloc) + return; + + vaddr = phys_to_virt(io_tlb_start); + bytes = PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT); + set_memory_decrypted((unsigned long)vaddr, bytes >> PAGE_SHIFT); + memset(vaddr, 0, bytes); + + vaddr = phys_to_virt(io_tlb_overflow_buffer); + bytes = PAGE_ALIGN(io_tlb_overflow); + set_memory_decrypted((unsigned long)vaddr, bytes >> PAGE_SHIFT); + memset(vaddr, 0, bytes); +} + +int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) +{ + void *v_overflow_buffer; + unsigned long i, bytes; + + bytes = nslabs << IO_TLB_SHIFT; + + io_tlb_nslabs = nslabs; + io_tlb_start = __pa(tlb); + io_tlb_end = io_tlb_start + bytes; + + /* + * Get the overflow emergency buffer + */ + v_overflow_buffer = memblock_virt_alloc_low_nopanic( + PAGE_ALIGN(io_tlb_overflow), + PAGE_SIZE); + if (!v_overflow_buffer) + return -ENOMEM; + + io_tlb_overflow_buffer = __pa(v_overflow_buffer); + + /* + * Allocate and initialize the free list array. This array is used + * to find contiguous free memory regions of size up to IO_TLB_SEGSIZE + * between io_tlb_start and io_tlb_end. + */ + io_tlb_list = memblock_virt_alloc( + PAGE_ALIGN(io_tlb_nslabs * sizeof(int)), + PAGE_SIZE); + io_tlb_orig_addr = memblock_virt_alloc( + PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t)), + PAGE_SIZE); + for (i = 0; i < io_tlb_nslabs; i++) { + io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE); + io_tlb_orig_addr[i] = INVALID_PHYS_ADDR; + } + io_tlb_index = 0; + + if (verbose) + swiotlb_print_info(); + + swiotlb_set_max_segment(io_tlb_nslabs << IO_TLB_SHIFT); + return 0; +} + +/* + * Statically reserve bounce buffer space and initialize bounce buffer data + * structures for the software IO TLB used to implement the DMA API. + */ +void __init +swiotlb_init(int verbose) +{ + size_t default_size = IO_TLB_DEFAULT_SIZE; + unsigned char *vstart; + unsigned long bytes; + + if (!io_tlb_nslabs) { + io_tlb_nslabs = (default_size >> IO_TLB_SHIFT); + io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE); + } + + bytes = io_tlb_nslabs << IO_TLB_SHIFT; + + /* Get IO TLB memory from the low pages */ + vstart = memblock_virt_alloc_low_nopanic(PAGE_ALIGN(bytes), PAGE_SIZE); + if (vstart && !swiotlb_init_with_tbl(vstart, io_tlb_nslabs, verbose)) + return; + + if (io_tlb_start) + memblock_free_early(io_tlb_start, + PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT)); + pr_warn("Cannot allocate SWIOTLB buffer"); + no_iotlb_memory = true; +} + +/* + * Systems with larger DMA zones (those that don't support ISA) can + * initialize the swiotlb later using the slab allocator if needed. + * This should be just like above, but with some error catching. + */ +int +swiotlb_late_init_with_default_size(size_t default_size) +{ + unsigned long bytes, req_nslabs = io_tlb_nslabs; + unsigned char *vstart = NULL; + unsigned int order; + int rc = 0; + + if (!io_tlb_nslabs) { + io_tlb_nslabs = (default_size >> IO_TLB_SHIFT); + io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE); + } + + /* + * Get IO TLB memory from the low pages + */ + order = get_order(io_tlb_nslabs << IO_TLB_SHIFT); + io_tlb_nslabs = SLABS_PER_PAGE << order; + bytes = io_tlb_nslabs << IO_TLB_SHIFT; + + while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) { + vstart = (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, + order); + if (vstart) + break; + order--; + } + + if (!vstart) { + io_tlb_nslabs = req_nslabs; + return -ENOMEM; + } + if (order != get_order(bytes)) { + printk(KERN_WARNING "Warning: only able to allocate %ld MB " + "for software IO TLB\n", (PAGE_SIZE << order) >> 20); + io_tlb_nslabs = SLABS_PER_PAGE << order; + } + rc = swiotlb_late_init_with_tbl(vstart, io_tlb_nslabs); + if (rc) + free_pages((unsigned long)vstart, order); + + return rc; +} + +int +swiotlb_late_init_with_tbl(char *tlb, unsigned long nslabs) +{ + unsigned long i, bytes; + unsigned char *v_overflow_buffer; + + bytes = nslabs << IO_TLB_SHIFT; + + io_tlb_nslabs = nslabs; + io_tlb_start = virt_to_phys(tlb); + io_tlb_end = io_tlb_start + bytes; + + set_memory_decrypted((unsigned long)tlb, bytes >> PAGE_SHIFT); + memset(tlb, 0, bytes); + + /* + * Get the overflow emergency buffer + */ + v_overflow_buffer = (void *)__get_free_pages(GFP_DMA, + get_order(io_tlb_overflow)); + if (!v_overflow_buffer) + goto cleanup2; + + set_memory_decrypted((unsigned long)v_overflow_buffer, + io_tlb_overflow >> PAGE_SHIFT); + memset(v_overflow_buffer, 0, io_tlb_overflow); + io_tlb_overflow_buffer = virt_to_phys(v_overflow_buffer); + + /* + * Allocate and initialize the free list array. This array is used + * to find contiguous free memory regions of size up to IO_TLB_SEGSIZE + * between io_tlb_start and io_tlb_end. + */ + io_tlb_list = (unsigned int *)__get_free_pages(GFP_KERNEL, + get_order(io_tlb_nslabs * sizeof(int))); + if (!io_tlb_list) + goto cleanup3; + + io_tlb_orig_addr = (phys_addr_t *) + __get_free_pages(GFP_KERNEL, + get_order(io_tlb_nslabs * + sizeof(phys_addr_t))); + if (!io_tlb_orig_addr) + goto cleanup4; + + for (i = 0; i < io_tlb_nslabs; i++) { + io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE); + io_tlb_orig_addr[i] = INVALID_PHYS_ADDR; + } + io_tlb_index = 0; + + swiotlb_print_info(); + + late_alloc = 1; + + swiotlb_set_max_segment(io_tlb_nslabs << IO_TLB_SHIFT); + + return 0; + +cleanup4: + free_pages((unsigned long)io_tlb_list, get_order(io_tlb_nslabs * + sizeof(int))); + io_tlb_list = NULL; +cleanup3: + free_pages((unsigned long)v_overflow_buffer, + get_order(io_tlb_overflow)); + io_tlb_overflow_buffer = 0; +cleanup2: + io_tlb_end = 0; + io_tlb_start = 0; + io_tlb_nslabs = 0; + max_segment = 0; + return -ENOMEM; +} + +void __init swiotlb_exit(void) +{ + if (!io_tlb_orig_addr) + return; + + if (late_alloc) { + free_pages((unsigned long)phys_to_virt(io_tlb_overflow_buffer), + get_order(io_tlb_overflow)); + free_pages((unsigned long)io_tlb_orig_addr, + get_order(io_tlb_nslabs * sizeof(phys_addr_t))); + free_pages((unsigned long)io_tlb_list, get_order(io_tlb_nslabs * + sizeof(int))); + free_pages((unsigned long)phys_to_virt(io_tlb_start), + get_order(io_tlb_nslabs << IO_TLB_SHIFT)); + } else { + memblock_free_late(io_tlb_overflow_buffer, + PAGE_ALIGN(io_tlb_overflow)); + memblock_free_late(__pa(io_tlb_orig_addr), + PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t))); + memblock_free_late(__pa(io_tlb_list), + PAGE_ALIGN(io_tlb_nslabs * sizeof(int))); + memblock_free_late(io_tlb_start, + PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT)); + } + io_tlb_nslabs = 0; + max_segment = 0; +} + +int is_swiotlb_buffer(phys_addr_t paddr) +{ + return paddr >= io_tlb_start && paddr < io_tlb_end; +} + +/* + * Bounce: copy the swiotlb buffer back to the original dma location + */ +static void swiotlb_bounce(phys_addr_t orig_addr, phys_addr_t tlb_addr, + size_t size, enum dma_data_direction dir) +{ + unsigned long pfn = PFN_DOWN(orig_addr); + unsigned char *vaddr = phys_to_virt(tlb_addr); + + if (PageHighMem(pfn_to_page(pfn))) { + /* The buffer does not have a mapping. Map it in and copy */ + unsigned int offset = orig_addr & ~PAGE_MASK; + char *buffer; + unsigned int sz = 0; + unsigned long flags; + + while (size) { + sz = min_t(size_t, PAGE_SIZE - offset, size); + + local_irq_save(flags); + buffer = kmap_atomic(pfn_to_page(pfn)); + if (dir == DMA_TO_DEVICE) + memcpy(vaddr, buffer + offset, sz); + else + memcpy(buffer + offset, vaddr, sz); + kunmap_atomic(buffer); + local_irq_restore(flags); + + size -= sz; + pfn++; + vaddr += sz; + offset = 0; + } + } else if (dir == DMA_TO_DEVICE) { + memcpy(vaddr, phys_to_virt(orig_addr), size); + } else { + memcpy(phys_to_virt(orig_addr), vaddr, size); + } +} + +phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, + dma_addr_t tbl_dma_addr, + phys_addr_t orig_addr, size_t size, + enum dma_data_direction dir, + unsigned long attrs) +{ + unsigned long flags; + phys_addr_t tlb_addr; + unsigned int nslots, stride, index, wrap; + int i; + unsigned long mask; + unsigned long offset_slots; + unsigned long max_slots; + + if (no_iotlb_memory) + panic("Can not allocate SWIOTLB buffer earlier and can't now provide you with the DMA bounce buffer"); + + if (mem_encrypt_active()) + pr_warn_once("%s is active and system is using DMA bounce buffers\n", + sme_active() ? "SME" : "SEV"); + + mask = dma_get_seg_boundary(hwdev); + + tbl_dma_addr &= mask; + + offset_slots = ALIGN(tbl_dma_addr, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; + + /* + * Carefully handle integer overflow which can occur when mask == ~0UL. + */ + max_slots = mask + 1 + ? ALIGN(mask + 1, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT + : 1UL << (BITS_PER_LONG - IO_TLB_SHIFT); + + /* + * For mappings greater than or equal to a page, we limit the stride + * (and hence alignment) to a page size. + */ + nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; + if (size >= PAGE_SIZE) + stride = (1 << (PAGE_SHIFT - IO_TLB_SHIFT)); + else + stride = 1; + + BUG_ON(!nslots); + + /* + * Find suitable number of IO TLB entries size that will fit this + * request and allocate a buffer from that IO TLB pool. + */ + spin_lock_irqsave(&io_tlb_lock, flags); + index = ALIGN(io_tlb_index, stride); + if (index >= io_tlb_nslabs) + index = 0; + wrap = index; + + do { + while (iommu_is_span_boundary(index, nslots, offset_slots, + max_slots)) { + index += stride; + if (index >= io_tlb_nslabs) + index = 0; + if (index == wrap) + goto not_found; + } + + /* + * If we find a slot that indicates we have 'nslots' number of + * contiguous buffers, we allocate the buffers from that slot + * and mark the entries as '0' indicating unavailable. + */ + if (io_tlb_list[index] >= nslots) { + int count = 0; + + for (i = index; i < (int) (index + nslots); i++) + io_tlb_list[i] = 0; + for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE - 1) && io_tlb_list[i]; i--) + io_tlb_list[i] = ++count; + tlb_addr = io_tlb_start + (index << IO_TLB_SHIFT); + + /* + * Update the indices to avoid searching in the next + * round. + */ + io_tlb_index = ((index + nslots) < io_tlb_nslabs + ? (index + nslots) : 0); + + goto found; + } + index += stride; + if (index >= io_tlb_nslabs) + index = 0; + } while (index != wrap); + +not_found: + spin_unlock_irqrestore(&io_tlb_lock, flags); + if (!(attrs & DMA_ATTR_NO_WARN) && printk_ratelimit()) + dev_warn(hwdev, "swiotlb buffer is full (sz: %zd bytes)\n", size); + return SWIOTLB_MAP_ERROR; +found: + spin_unlock_irqrestore(&io_tlb_lock, flags); + + /* + * Save away the mapping from the original address to the DMA address. + * This is needed when we sync the memory. Then we sync the buffer if + * needed. + */ + for (i = 0; i < nslots; i++) + io_tlb_orig_addr[index+i] = orig_addr + (i << IO_TLB_SHIFT); + if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) && + (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)) + swiotlb_bounce(orig_addr, tlb_addr, size, DMA_TO_DEVICE); + + return tlb_addr; +} + +/* + * Allocates bounce buffer and returns its physical address. + */ +static phys_addr_t +map_single(struct device *hwdev, phys_addr_t phys, size_t size, + enum dma_data_direction dir, unsigned long attrs) +{ + dma_addr_t start_dma_addr; + + if (swiotlb_force == SWIOTLB_NO_FORCE) { + dev_warn_ratelimited(hwdev, "Cannot do DMA to address %pa\n", + &phys); + return SWIOTLB_MAP_ERROR; + } + + start_dma_addr = __phys_to_dma(hwdev, io_tlb_start); + return swiotlb_tbl_map_single(hwdev, start_dma_addr, phys, size, + dir, attrs); +} + +/* + * tlb_addr is the physical address of the bounce buffer to unmap. + */ +void swiotlb_tbl_unmap_single(struct device *hwdev, phys_addr_t tlb_addr, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + unsigned long flags; + int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; + int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT; + phys_addr_t orig_addr = io_tlb_orig_addr[index]; + + /* + * First, sync the memory before unmapping the entry + */ + if (orig_addr != INVALID_PHYS_ADDR && + !(attrs & DMA_ATTR_SKIP_CPU_SYNC) && + ((dir == DMA_FROM_DEVICE) || (dir == DMA_BIDIRECTIONAL))) + swiotlb_bounce(orig_addr, tlb_addr, size, DMA_FROM_DEVICE); + + /* + * Return the buffer to the free list by setting the corresponding + * entries to indicate the number of contiguous entries available. + * While returning the entries to the free list, we merge the entries + * with slots below and above the pool being returned. + */ + spin_lock_irqsave(&io_tlb_lock, flags); + { + count = ((index + nslots) < ALIGN(index + 1, IO_TLB_SEGSIZE) ? + io_tlb_list[index + nslots] : 0); + /* + * Step 1: return the slots to the free list, merging the + * slots with superceeding slots + */ + for (i = index + nslots - 1; i >= index; i--) { + io_tlb_list[i] = ++count; + io_tlb_orig_addr[i] = INVALID_PHYS_ADDR; + } + /* + * Step 2: merge the returned slots with the preceding slots, + * if available (non zero) + */ + for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1) && io_tlb_list[i]; i--) + io_tlb_list[i] = ++count; + } + spin_unlock_irqrestore(&io_tlb_lock, flags); +} + +void swiotlb_tbl_sync_single(struct device *hwdev, phys_addr_t tlb_addr, + size_t size, enum dma_data_direction dir, + enum dma_sync_target target) +{ + int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT; + phys_addr_t orig_addr = io_tlb_orig_addr[index]; + + if (orig_addr == INVALID_PHYS_ADDR) + return; + orig_addr += (unsigned long)tlb_addr & ((1 << IO_TLB_SHIFT) - 1); + + switch (target) { + case SYNC_FOR_CPU: + if (likely(dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL)) + swiotlb_bounce(orig_addr, tlb_addr, + size, DMA_FROM_DEVICE); + else + BUG_ON(dir != DMA_TO_DEVICE); + break; + case SYNC_FOR_DEVICE: + if (likely(dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)) + swiotlb_bounce(orig_addr, tlb_addr, + size, DMA_TO_DEVICE); + else + BUG_ON(dir != DMA_FROM_DEVICE); + break; + default: + BUG(); + } +} + +static inline bool dma_coherent_ok(struct device *dev, dma_addr_t addr, + size_t size) +{ + u64 mask = DMA_BIT_MASK(32); + + if (dev && dev->coherent_dma_mask) + mask = dev->coherent_dma_mask; + return addr + size - 1 <= mask; +} + +static void * +swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle, + unsigned long attrs) +{ + phys_addr_t phys_addr; + + if (swiotlb_force == SWIOTLB_NO_FORCE) + goto out_warn; + + phys_addr = swiotlb_tbl_map_single(dev, + __phys_to_dma(dev, io_tlb_start), + 0, size, DMA_FROM_DEVICE, attrs); + if (phys_addr == SWIOTLB_MAP_ERROR) + goto out_warn; + + *dma_handle = __phys_to_dma(dev, phys_addr); + if (!dma_coherent_ok(dev, *dma_handle, size)) + goto out_unmap; + + memset(phys_to_virt(phys_addr), 0, size); + return phys_to_virt(phys_addr); + +out_unmap: + dev_warn(dev, "hwdev DMA mask = 0x%016Lx, dev_addr = 0x%016Lx\n", + (unsigned long long)dev->coherent_dma_mask, + (unsigned long long)*dma_handle); + + /* + * DMA_TO_DEVICE to avoid memcpy in unmap_single. + * DMA_ATTR_SKIP_CPU_SYNC is optional. + */ + swiotlb_tbl_unmap_single(dev, phys_addr, size, DMA_TO_DEVICE, + DMA_ATTR_SKIP_CPU_SYNC); +out_warn: + if (!(attrs & DMA_ATTR_NO_WARN) && printk_ratelimit()) { + dev_warn(dev, + "swiotlb: coherent allocation failed, size=%zu\n", + size); + dump_stack(); + } + return NULL; +} + +static bool swiotlb_free_buffer(struct device *dev, size_t size, + dma_addr_t dma_addr) +{ + phys_addr_t phys_addr = dma_to_phys(dev, dma_addr); + + WARN_ON_ONCE(irqs_disabled()); + + if (!is_swiotlb_buffer(phys_addr)) + return false; + + /* + * DMA_TO_DEVICE to avoid memcpy in swiotlb_tbl_unmap_single. + * DMA_ATTR_SKIP_CPU_SYNC is optional. + */ + swiotlb_tbl_unmap_single(dev, phys_addr, size, DMA_TO_DEVICE, + DMA_ATTR_SKIP_CPU_SYNC); + return true; +} + +static void +swiotlb_full(struct device *dev, size_t size, enum dma_data_direction dir, + int do_panic) +{ + if (swiotlb_force == SWIOTLB_NO_FORCE) + return; + + /* + * Ran out of IOMMU space for this operation. This is very bad. + * Unfortunately the drivers cannot handle this operation properly. + * unless they check for dma_mapping_error (most don't) + * When the mapping is small enough return a static buffer to limit + * the damage, or panic when the transfer is too big. + */ + dev_err_ratelimited(dev, "DMA: Out of SW-IOMMU space for %zu bytes\n", + size); + + if (size <= io_tlb_overflow || !do_panic) + return; + + if (dir == DMA_BIDIRECTIONAL) + panic("DMA: Random memory could be DMA accessed\n"); + if (dir == DMA_FROM_DEVICE) + panic("DMA: Random memory could be DMA written\n"); + if (dir == DMA_TO_DEVICE) + panic("DMA: Random memory could be DMA read\n"); +} + +/* + * Map a single buffer of the indicated size for DMA in streaming mode. The + * physical address to use is returned. + * + * Once the device is given the dma address, the device owns this memory until + * either swiotlb_unmap_page or swiotlb_dma_sync_single is performed. + */ +dma_addr_t swiotlb_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir, + unsigned long attrs) +{ + phys_addr_t map, phys = page_to_phys(page) + offset; + dma_addr_t dev_addr = phys_to_dma(dev, phys); + + BUG_ON(dir == DMA_NONE); + /* + * If the address happens to be in the device's DMA window, + * we can safely return the device addr and not worry about bounce + * buffering it. + */ + if (dma_capable(dev, dev_addr, size) && swiotlb_force != SWIOTLB_FORCE) + return dev_addr; + + trace_swiotlb_bounced(dev, dev_addr, size, swiotlb_force); + + /* Oh well, have to allocate and map a bounce buffer. */ + map = map_single(dev, phys, size, dir, attrs); + if (map == SWIOTLB_MAP_ERROR) { + swiotlb_full(dev, size, dir, 1); + return __phys_to_dma(dev, io_tlb_overflow_buffer); + } + + dev_addr = __phys_to_dma(dev, map); + + /* Ensure that the address returned is DMA'ble */ + if (dma_capable(dev, dev_addr, size)) + return dev_addr; + + attrs |= DMA_ATTR_SKIP_CPU_SYNC; + swiotlb_tbl_unmap_single(dev, map, size, dir, attrs); + + return __phys_to_dma(dev, io_tlb_overflow_buffer); +} + +/* + * Unmap a single streaming mode DMA translation. The dma_addr and size must + * match what was provided for in a previous swiotlb_map_page call. All + * other usages are undefined. + * + * After this call, reads by the cpu to the buffer are guaranteed to see + * whatever the device wrote there. + */ +static void unmap_single(struct device *hwdev, dma_addr_t dev_addr, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + phys_addr_t paddr = dma_to_phys(hwdev, dev_addr); + + BUG_ON(dir == DMA_NONE); + + if (is_swiotlb_buffer(paddr)) { + swiotlb_tbl_unmap_single(hwdev, paddr, size, dir, attrs); + return; + } + + if (dir != DMA_FROM_DEVICE) + return; + + /* + * phys_to_virt doesn't work with hihgmem page but we could + * call dma_mark_clean() with hihgmem page here. However, we + * are fine since dma_mark_clean() is null on POWERPC. We can + * make dma_mark_clean() take a physical address if necessary. + */ + dma_mark_clean(phys_to_virt(paddr), size); +} + +void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + unmap_single(hwdev, dev_addr, size, dir, attrs); +} + +/* + * Make physical memory consistent for a single streaming mode DMA translation + * after a transfer. + * + * If you perform a swiotlb_map_page() but wish to interrogate the buffer + * using the cpu, yet do not wish to teardown the dma mapping, you must + * call this function before doing so. At the next point you give the dma + * address back to the card, you must first perform a + * swiotlb_dma_sync_for_device, and then the device again owns the buffer + */ +static void +swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr, + size_t size, enum dma_data_direction dir, + enum dma_sync_target target) +{ + phys_addr_t paddr = dma_to_phys(hwdev, dev_addr); + + BUG_ON(dir == DMA_NONE); + + if (is_swiotlb_buffer(paddr)) { + swiotlb_tbl_sync_single(hwdev, paddr, size, dir, target); + return; + } + + if (dir != DMA_FROM_DEVICE) + return; + + dma_mark_clean(phys_to_virt(paddr), size); +} + +void +swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr, + size_t size, enum dma_data_direction dir) +{ + swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_CPU); +} + +void +swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr, + size_t size, enum dma_data_direction dir) +{ + swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_DEVICE); +} + +/* + * Map a set of buffers described by scatterlist in streaming mode for DMA. + * This is the scatter-gather version of the above swiotlb_map_page + * interface. Here the scatter gather list elements are each tagged with the + * appropriate dma address and length. They are obtained via + * sg_dma_{address,length}(SG). + * + * NOTE: An implementation may be able to use a smaller number of + * DMA address/length pairs than there are SG table elements. + * (for example via virtual mapping capabilities) + * The routine returns the number of addr/length pairs actually + * used, at most nents. + * + * Device ownership issues as mentioned above for swiotlb_map_page are the + * same here. + */ +int +swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems, + enum dma_data_direction dir, unsigned long attrs) +{ + struct scatterlist *sg; + int i; + + BUG_ON(dir == DMA_NONE); + + for_each_sg(sgl, sg, nelems, i) { + phys_addr_t paddr = sg_phys(sg); + dma_addr_t dev_addr = phys_to_dma(hwdev, paddr); + + if (swiotlb_force == SWIOTLB_FORCE || + !dma_capable(hwdev, dev_addr, sg->length)) { + phys_addr_t map = map_single(hwdev, sg_phys(sg), + sg->length, dir, attrs); + if (map == SWIOTLB_MAP_ERROR) { + /* Don't panic here, we expect map_sg users + to do proper error handling. */ + swiotlb_full(hwdev, sg->length, dir, 0); + attrs |= DMA_ATTR_SKIP_CPU_SYNC; + swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir, + attrs); + sg_dma_len(sgl) = 0; + return 0; + } + sg->dma_address = __phys_to_dma(hwdev, map); + } else + sg->dma_address = dev_addr; + sg_dma_len(sg) = sg->length; + } + return nelems; +} + +/* + * Unmap a set of streaming mode DMA translations. Again, cpu read rules + * concerning calls here are the same as for swiotlb_unmap_page() above. + */ +void +swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl, + int nelems, enum dma_data_direction dir, + unsigned long attrs) +{ + struct scatterlist *sg; + int i; + + BUG_ON(dir == DMA_NONE); + + for_each_sg(sgl, sg, nelems, i) + unmap_single(hwdev, sg->dma_address, sg_dma_len(sg), dir, + attrs); +} + +/* + * Make physical memory consistent for a set of streaming mode DMA translations + * after a transfer. + * + * The same as swiotlb_sync_single_* but for a scatter-gather list, same rules + * and usage. + */ +static void +swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sgl, + int nelems, enum dma_data_direction dir, + enum dma_sync_target target) +{ + struct scatterlist *sg; + int i; + + for_each_sg(sgl, sg, nelems, i) + swiotlb_sync_single(hwdev, sg->dma_address, + sg_dma_len(sg), dir, target); +} + +void +swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, + int nelems, enum dma_data_direction dir) +{ + swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_CPU); +} + +void +swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, + int nelems, enum dma_data_direction dir) +{ + swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_DEVICE); +} + +int +swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr) +{ + return (dma_addr == __phys_to_dma(hwdev, io_tlb_overflow_buffer)); +} + +/* + * Return whether the given device DMA address mask can be supported + * properly. For example, if your device can only drive the low 24-bits + * during bus mastering, then you would pass 0x00ffffff as the mask to + * this function. + */ +int +swiotlb_dma_supported(struct device *hwdev, u64 mask) +{ + return __phys_to_dma(hwdev, io_tlb_end - 1) <= mask; +} + +void *swiotlb_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, + gfp_t gfp, unsigned long attrs) +{ + void *vaddr; + + /* temporary workaround: */ + if (gfp & __GFP_NOWARN) + attrs |= DMA_ATTR_NO_WARN; + + /* + * Don't print a warning when the first allocation attempt fails. + * swiotlb_alloc_coherent() will print a warning when the DMA memory + * allocation ultimately failed. + */ + gfp |= __GFP_NOWARN; + + vaddr = dma_direct_alloc(dev, size, dma_handle, gfp, attrs); + if (!vaddr) + vaddr = swiotlb_alloc_buffer(dev, size, dma_handle, attrs); + return vaddr; +} + +void swiotlb_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_addr, unsigned long attrs) +{ + if (!swiotlb_free_buffer(dev, size, dma_addr)) + dma_direct_free(dev, size, vaddr, dma_addr, attrs); +} + +const struct dma_map_ops swiotlb_dma_ops = { + .mapping_error = swiotlb_dma_mapping_error, + .alloc = swiotlb_alloc, + .free = swiotlb_free, + .sync_single_for_cpu = swiotlb_sync_single_for_cpu, + .sync_single_for_device = swiotlb_sync_single_for_device, + .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu, + .sync_sg_for_device = swiotlb_sync_sg_for_device, + .map_sg = swiotlb_map_sg_attrs, + .unmap_sg = swiotlb_unmap_sg_attrs, + .map_page = swiotlb_map_page, + .unmap_page = swiotlb_unmap_page, + .dma_supported = dma_direct_supported, +}; diff --git a/kernel/dma/virt.c b/kernel/dma/virt.c new file mode 100644 index 000000000000..631ddec4b60a --- /dev/null +++ b/kernel/dma/virt.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * DMA operations that map to virtual addresses without flushing memory. + */ +#include +#include +#include +#include + +static void *dma_virt_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, + unsigned long attrs) +{ + void *ret; + + ret = (void *)__get_free_pages(gfp, get_order(size)); + if (ret) + *dma_handle = (uintptr_t)ret; + return ret; +} + +static void dma_virt_free(struct device *dev, size_t size, + void *cpu_addr, dma_addr_t dma_addr, + unsigned long attrs) +{ + free_pages((unsigned long)cpu_addr, get_order(size)); +} + +static dma_addr_t dma_virt_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir, + unsigned long attrs) +{ + return (uintptr_t)(page_address(page) + offset); +} + +static int dma_virt_map_sg(struct device *dev, struct scatterlist *sgl, + int nents, enum dma_data_direction dir, + unsigned long attrs) +{ + int i; + struct scatterlist *sg; + + for_each_sg(sgl, sg, nents, i) { + BUG_ON(!sg_page(sg)); + sg_dma_address(sg) = (uintptr_t)sg_virt(sg); + sg_dma_len(sg) = sg->length; + } + + return nents; +} + +const struct dma_map_ops dma_virt_ops = { + .alloc = dma_virt_alloc, + .free = dma_virt_free, + .map_page = dma_virt_map_page, + .map_sg = dma_virt_map_sg, +}; +EXPORT_SYMBOL(dma_virt_ops); diff --git a/lib/Kconfig b/lib/Kconfig index 809fdd155739..803fcbced729 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -420,60 +420,15 @@ config HAS_IOPORT_MAP depends on HAS_IOMEM && !NO_IOPORT_MAP default y -config HAS_DMA - bool - depends on !NO_DMA - default y +source "kernel/dma/Kconfig" config SGL_ALLOC bool default n -config NEED_SG_DMA_LENGTH - bool - -config NEED_DMA_MAP_STATE - bool - -config ARCH_DMA_ADDR_T_64BIT - def_bool 64BIT || PHYS_ADDR_T_64BIT - config IOMMU_HELPER bool -config ARCH_HAS_SYNC_DMA_FOR_DEVICE - bool - -config ARCH_HAS_SYNC_DMA_FOR_CPU - bool - select NEED_DMA_MAP_STATE - -config DMA_DIRECT_OPS - bool - depends on HAS_DMA - -config DMA_NONCOHERENT_OPS - bool - depends on HAS_DMA - select DMA_DIRECT_OPS - -config DMA_NONCOHERENT_MMAP - bool - depends on DMA_NONCOHERENT_OPS - -config DMA_NONCOHERENT_CACHE_SYNC - bool - depends on DMA_NONCOHERENT_OPS - -config DMA_VIRT_OPS - bool - depends on HAS_DMA - -config SWIOTLB - bool - select DMA_DIRECT_OPS - select NEED_DMA_MAP_STATE - config CHECK_SIGNATURE bool diff --git a/lib/Makefile b/lib/Makefile index 5e0e160c9242..8153fdab287f 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -29,9 +29,6 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ lib-$(CONFIG_PRINTK) += dump_stack.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o -obj-$(CONFIG_DMA_DIRECT_OPS) += dma-direct.o -obj-$(CONFIG_DMA_NONCOHERENT_OPS) += dma-noncoherent.o -obj-$(CONFIG_DMA_VIRT_OPS) += dma-virt.o lib-y += kobject.o klist.o obj-y += lockref.o @@ -148,7 +145,6 @@ obj-$(CONFIG_SMP) += percpu_counter.o obj-$(CONFIG_AUDIT_GENERIC) += audit.o obj-$(CONFIG_AUDIT_COMPAT_GENERIC) += compat_audit.o -obj-$(CONFIG_SWIOTLB) += swiotlb.o obj-$(CONFIG_IOMMU_HELPER) += iommu-helper.o obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o @@ -169,8 +165,6 @@ obj-$(CONFIG_NLATTR) += nlattr.o obj-$(CONFIG_LRU_CACHE) += lru_cache.o -obj-$(CONFIG_DMA_API_DEBUG) += dma-debug.o - obj-$(CONFIG_GENERIC_CSUM) += checksum.o obj-$(CONFIG_GENERIC_ATOMIC64) += atomic64.o diff --git a/lib/dma-debug.c b/lib/dma-debug.c deleted file mode 100644 index c007d25bee09..000000000000 --- a/lib/dma-debug.c +++ /dev/null @@ -1,1773 +0,0 @@ -/* - * Copyright (C) 2008 Advanced Micro Devices, Inc. - * - * Author: Joerg Roedel - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#define HASH_SIZE 1024ULL -#define HASH_FN_SHIFT 13 -#define HASH_FN_MASK (HASH_SIZE - 1) - -/* allow architectures to override this if absolutely required */ -#ifndef PREALLOC_DMA_DEBUG_ENTRIES -#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16) -#endif - -enum { - dma_debug_single, - dma_debug_page, - dma_debug_sg, - dma_debug_coherent, - dma_debug_resource, -}; - -enum map_err_types { - MAP_ERR_CHECK_NOT_APPLICABLE, - MAP_ERR_NOT_CHECKED, - MAP_ERR_CHECKED, -}; - -#define DMA_DEBUG_STACKTRACE_ENTRIES 5 - -/** - * struct dma_debug_entry - track a dma_map* or dma_alloc_coherent mapping - * @list: node on pre-allocated free_entries list - * @dev: 'dev' argument to dma_map_{page|single|sg} or dma_alloc_coherent - * @type: single, page, sg, coherent - * @pfn: page frame of the start address - * @offset: offset of mapping relative to pfn - * @size: length of the mapping - * @direction: enum dma_data_direction - * @sg_call_ents: 'nents' from dma_map_sg - * @sg_mapped_ents: 'mapped_ents' from dma_map_sg - * @map_err_type: track whether dma_mapping_error() was checked - * @stacktrace: support backtraces when a violation is detected - */ -struct dma_debug_entry { - struct list_head list; - struct device *dev; - int type; - unsigned long pfn; - size_t offset; - u64 dev_addr; - u64 size; - int direction; - int sg_call_ents; - int sg_mapped_ents; - enum map_err_types map_err_type; -#ifdef CONFIG_STACKTRACE - struct stack_trace stacktrace; - unsigned long st_entries[DMA_DEBUG_STACKTRACE_ENTRIES]; -#endif -}; - -typedef bool (*match_fn)(struct dma_debug_entry *, struct dma_debug_entry *); - -struct hash_bucket { - struct list_head list; - spinlock_t lock; -} ____cacheline_aligned_in_smp; - -/* Hash list to save the allocated dma addresses */ -static struct hash_bucket dma_entry_hash[HASH_SIZE]; -/* List of pre-allocated dma_debug_entry's */ -static LIST_HEAD(free_entries); -/* Lock for the list above */ -static DEFINE_SPINLOCK(free_entries_lock); - -/* Global disable flag - will be set in case of an error */ -static bool global_disable __read_mostly; - -/* Early initialization disable flag, set at the end of dma_debug_init */ -static bool dma_debug_initialized __read_mostly; - -static inline bool dma_debug_disabled(void) -{ - return global_disable || !dma_debug_initialized; -} - -/* Global error count */ -static u32 error_count; - -/* Global error show enable*/ -static u32 show_all_errors __read_mostly; -/* Number of errors to show */ -static u32 show_num_errors = 1; - -static u32 num_free_entries; -static u32 min_free_entries; -static u32 nr_total_entries; - -/* number of preallocated entries requested by kernel cmdline */ -static u32 nr_prealloc_entries = PREALLOC_DMA_DEBUG_ENTRIES; - -/* debugfs dentry's for the stuff above */ -static struct dentry *dma_debug_dent __read_mostly; -static struct dentry *global_disable_dent __read_mostly; -static struct dentry *error_count_dent __read_mostly; -static struct dentry *show_all_errors_dent __read_mostly; -static struct dentry *show_num_errors_dent __read_mostly; -static struct dentry *num_free_entries_dent __read_mostly; -static struct dentry *min_free_entries_dent __read_mostly; -static struct dentry *filter_dent __read_mostly; - -/* per-driver filter related state */ - -#define NAME_MAX_LEN 64 - -static char current_driver_name[NAME_MAX_LEN] __read_mostly; -static struct device_driver *current_driver __read_mostly; - -static DEFINE_RWLOCK(driver_name_lock); - -static const char *const maperr2str[] = { - [MAP_ERR_CHECK_NOT_APPLICABLE] = "dma map error check not applicable", - [MAP_ERR_NOT_CHECKED] = "dma map error not checked", - [MAP_ERR_CHECKED] = "dma map error checked", -}; - -static const char *type2name[5] = { "single", "page", - "scather-gather", "coherent", - "resource" }; - -static const char *dir2name[4] = { "DMA_BIDIRECTIONAL", "DMA_TO_DEVICE", - "DMA_FROM_DEVICE", "DMA_NONE" }; - -/* - * The access to some variables in this macro is racy. We can't use atomic_t - * here because all these variables are exported to debugfs. Some of them even - * writeable. This is also the reason why a lock won't help much. But anyway, - * the races are no big deal. Here is why: - * - * error_count: the addition is racy, but the worst thing that can happen is - * that we don't count some errors - * show_num_errors: the subtraction is racy. Also no big deal because in - * worst case this will result in one warning more in the - * system log than the user configured. This variable is - * writeable via debugfs. - */ -static inline void dump_entry_trace(struct dma_debug_entry *entry) -{ -#ifdef CONFIG_STACKTRACE - if (entry) { - pr_warning("Mapped at:\n"); - print_stack_trace(&entry->stacktrace, 0); - } -#endif -} - -static bool driver_filter(struct device *dev) -{ - struct device_driver *drv; - unsigned long flags; - bool ret; - - /* driver filter off */ - if (likely(!current_driver_name[0])) - return true; - - /* driver filter on and initialized */ - if (current_driver && dev && dev->driver == current_driver) - return true; - - /* driver filter on, but we can't filter on a NULL device... */ - if (!dev) - return false; - - if (current_driver || !current_driver_name[0]) - return false; - - /* driver filter on but not yet initialized */ - drv = dev->driver; - if (!drv) - return false; - - /* lock to protect against change of current_driver_name */ - read_lock_irqsave(&driver_name_lock, flags); - - ret = false; - if (drv->name && - strncmp(current_driver_name, drv->name, NAME_MAX_LEN - 1) == 0) { - current_driver = drv; - ret = true; - } - - read_unlock_irqrestore(&driver_name_lock, flags); - - return ret; -} - -#define err_printk(dev, entry, format, arg...) do { \ - error_count += 1; \ - if (driver_filter(dev) && \ - (show_all_errors || show_num_errors > 0)) { \ - WARN(1, "%s %s: " format, \ - dev ? dev_driver_string(dev) : "NULL", \ - dev ? dev_name(dev) : "NULL", ## arg); \ - dump_entry_trace(entry); \ - } \ - if (!show_all_errors && show_num_errors > 0) \ - show_num_errors -= 1; \ - } while (0); - -/* - * Hash related functions - * - * Every DMA-API request is saved into a struct dma_debug_entry. To - * have quick access to these structs they are stored into a hash. - */ -static int hash_fn(struct dma_debug_entry *entry) -{ - /* - * Hash function is based on the dma address. - * We use bits 20-27 here as the index into the hash - */ - return (entry->dev_addr >> HASH_FN_SHIFT) & HASH_FN_MASK; -} - -/* - * Request exclusive access to a hash bucket for a given dma_debug_entry. - */ -static struct hash_bucket *get_hash_bucket(struct dma_debug_entry *entry, - unsigned long *flags) - __acquires(&dma_entry_hash[idx].lock) -{ - int idx = hash_fn(entry); - unsigned long __flags; - - spin_lock_irqsave(&dma_entry_hash[idx].lock, __flags); - *flags = __flags; - return &dma_entry_hash[idx]; -} - -/* - * Give up exclusive access to the hash bucket - */ -static void put_hash_bucket(struct hash_bucket *bucket, - unsigned long *flags) - __releases(&bucket->lock) -{ - unsigned long __flags = *flags; - - spin_unlock_irqrestore(&bucket->lock, __flags); -} - -static bool exact_match(struct dma_debug_entry *a, struct dma_debug_entry *b) -{ - return ((a->dev_addr == b->dev_addr) && - (a->dev == b->dev)) ? true : false; -} - -static bool containing_match(struct dma_debug_entry *a, - struct dma_debug_entry *b) -{ - if (a->dev != b->dev) - return false; - - if ((b->dev_addr <= a->dev_addr) && - ((b->dev_addr + b->size) >= (a->dev_addr + a->size))) - return true; - - return false; -} - -/* - * Search a given entry in the hash bucket list - */ -static struct dma_debug_entry *__hash_bucket_find(struct hash_bucket *bucket, - struct dma_debug_entry *ref, - match_fn match) -{ - struct dma_debug_entry *entry, *ret = NULL; - int matches = 0, match_lvl, last_lvl = -1; - - list_for_each_entry(entry, &bucket->list, list) { - if (!match(ref, entry)) - continue; - - /* - * Some drivers map the same physical address multiple - * times. Without a hardware IOMMU this results in the - * same device addresses being put into the dma-debug - * hash multiple times too. This can result in false - * positives being reported. Therefore we implement a - * best-fit algorithm here which returns the entry from - * the hash which fits best to the reference value - * instead of the first-fit. - */ - matches += 1; - match_lvl = 0; - entry->size == ref->size ? ++match_lvl : 0; - entry->type == ref->type ? ++match_lvl : 0; - entry->direction == ref->direction ? ++match_lvl : 0; - entry->sg_call_ents == ref->sg_call_ents ? ++match_lvl : 0; - - if (match_lvl == 4) { - /* perfect-fit - return the result */ - return entry; - } else if (match_lvl > last_lvl) { - /* - * We found an entry that fits better then the - * previous one or it is the 1st match. - */ - last_lvl = match_lvl; - ret = entry; - } - } - - /* - * If we have multiple matches but no perfect-fit, just return - * NULL. - */ - ret = (matches == 1) ? ret : NULL; - - return ret; -} - -static struct dma_debug_entry *bucket_find_exact(struct hash_bucket *bucket, - struct dma_debug_entry *ref) -{ - return __hash_bucket_find(bucket, ref, exact_match); -} - -static struct dma_debug_entry *bucket_find_contain(struct hash_bucket **bucket, - struct dma_debug_entry *ref, - unsigned long *flags) -{ - - unsigned int max_range = dma_get_max_seg_size(ref->dev); - struct dma_debug_entry *entry, index = *ref; - unsigned int range = 0; - - while (range <= max_range) { - entry = __hash_bucket_find(*bucket, ref, containing_match); - - if (entry) - return entry; - - /* - * Nothing found, go back a hash bucket - */ - put_hash_bucket(*bucket, flags); - range += (1 << HASH_FN_SHIFT); - index.dev_addr -= (1 << HASH_FN_SHIFT); - *bucket = get_hash_bucket(&index, flags); - } - - return NULL; -} - -/* - * Add an entry to a hash bucket - */ -static void hash_bucket_add(struct hash_bucket *bucket, - struct dma_debug_entry *entry) -{ - list_add_tail(&entry->list, &bucket->list); -} - -/* - * Remove entry from a hash bucket list - */ -static void hash_bucket_del(struct dma_debug_entry *entry) -{ - list_del(&entry->list); -} - -static unsigned long long phys_addr(struct dma_debug_entry *entry) -{ - if (entry->type == dma_debug_resource) - return __pfn_to_phys(entry->pfn) + entry->offset; - - return page_to_phys(pfn_to_page(entry->pfn)) + entry->offset; -} - -/* - * Dump mapping entries for debugging purposes - */ -void debug_dma_dump_mappings(struct device *dev) -{ - int idx; - - for (idx = 0; idx < HASH_SIZE; idx++) { - struct hash_bucket *bucket = &dma_entry_hash[idx]; - struct dma_debug_entry *entry; - unsigned long flags; - - spin_lock_irqsave(&bucket->lock, flags); - - list_for_each_entry(entry, &bucket->list, list) { - if (!dev || dev == entry->dev) { - dev_info(entry->dev, - "%s idx %d P=%Lx N=%lx D=%Lx L=%Lx %s %s\n", - type2name[entry->type], idx, - phys_addr(entry), entry->pfn, - entry->dev_addr, entry->size, - dir2name[entry->direction], - maperr2str[entry->map_err_type]); - } - } - - spin_unlock_irqrestore(&bucket->lock, flags); - } -} - -/* - * For each mapping (initial cacheline in the case of - * dma_alloc_coherent/dma_map_page, initial cacheline in each page of a - * scatterlist, or the cacheline specified in dma_map_single) insert - * into this tree using the cacheline as the key. At - * dma_unmap_{single|sg|page} or dma_free_coherent delete the entry. If - * the entry already exists at insertion time add a tag as a reference - * count for the overlapping mappings. For now, the overlap tracking - * just ensures that 'unmaps' balance 'maps' before marking the - * cacheline idle, but we should also be flagging overlaps as an API - * violation. - * - * Memory usage is mostly constrained by the maximum number of available - * dma-debug entries in that we need a free dma_debug_entry before - * inserting into the tree. In the case of dma_map_page and - * dma_alloc_coherent there is only one dma_debug_entry and one - * dma_active_cacheline entry to track per event. dma_map_sg(), on the - * other hand, consumes a single dma_debug_entry, but inserts 'nents' - * entries into the tree. - * - * At any time debug_dma_assert_idle() can be called to trigger a - * warning if any cachelines in the given page are in the active set. - */ -static RADIX_TREE(dma_active_cacheline, GFP_NOWAIT); -static DEFINE_SPINLOCK(radix_lock); -#define ACTIVE_CACHELINE_MAX_OVERLAP ((1 << RADIX_TREE_MAX_TAGS) - 1) -#define CACHELINE_PER_PAGE_SHIFT (PAGE_SHIFT - L1_CACHE_SHIFT) -#define CACHELINES_PER_PAGE (1 << CACHELINE_PER_PAGE_SHIFT) - -static phys_addr_t to_cacheline_number(struct dma_debug_entry *entry) -{ - return (entry->pfn << CACHELINE_PER_PAGE_SHIFT) + - (entry->offset >> L1_CACHE_SHIFT); -} - -static int active_cacheline_read_overlap(phys_addr_t cln) -{ - int overlap = 0, i; - - for (i = RADIX_TREE_MAX_TAGS - 1; i >= 0; i--) - if (radix_tree_tag_get(&dma_active_cacheline, cln, i)) - overlap |= 1 << i; - return overlap; -} - -static int active_cacheline_set_overlap(phys_addr_t cln, int overlap) -{ - int i; - - if (overlap > ACTIVE_CACHELINE_MAX_OVERLAP || overlap < 0) - return overlap; - - for (i = RADIX_TREE_MAX_TAGS - 1; i >= 0; i--) - if (overlap & 1 << i) - radix_tree_tag_set(&dma_active_cacheline, cln, i); - else - radix_tree_tag_clear(&dma_active_cacheline, cln, i); - - return overlap; -} - -static void active_cacheline_inc_overlap(phys_addr_t cln) -{ - int overlap = active_cacheline_read_overlap(cln); - - overlap = active_cacheline_set_overlap(cln, ++overlap); - - /* If we overflowed the overlap counter then we're potentially - * leaking dma-mappings. Otherwise, if maps and unmaps are - * balanced then this overflow may cause false negatives in - * debug_dma_assert_idle() as the cacheline may be marked idle - * prematurely. - */ - WARN_ONCE(overlap > ACTIVE_CACHELINE_MAX_OVERLAP, - "DMA-API: exceeded %d overlapping mappings of cacheline %pa\n", - ACTIVE_CACHELINE_MAX_OVERLAP, &cln); -} - -static int active_cacheline_dec_overlap(phys_addr_t cln) -{ - int overlap = active_cacheline_read_overlap(cln); - - return active_cacheline_set_overlap(cln, --overlap); -} - -static int active_cacheline_insert(struct dma_debug_entry *entry) -{ - phys_addr_t cln = to_cacheline_number(entry); - unsigned long flags; - int rc; - - /* If the device is not writing memory then we don't have any - * concerns about the cpu consuming stale data. This mitigates - * legitimate usages of overlapping mappings. - */ - if (entry->direction == DMA_TO_DEVICE) - return 0; - - spin_lock_irqsave(&radix_lock, flags); - rc = radix_tree_insert(&dma_active_cacheline, cln, entry); - if (rc == -EEXIST) - active_cacheline_inc_overlap(cln); - spin_unlock_irqrestore(&radix_lock, flags); - - return rc; -} - -static void active_cacheline_remove(struct dma_debug_entry *entry) -{ - phys_addr_t cln = to_cacheline_number(entry); - unsigned long flags; - - /* ...mirror the insert case */ - if (entry->direction == DMA_TO_DEVICE) - return; - - spin_lock_irqsave(&radix_lock, flags); - /* since we are counting overlaps the final put of the - * cacheline will occur when the overlap count is 0. - * active_cacheline_dec_overlap() returns -1 in that case - */ - if (active_cacheline_dec_overlap(cln) < 0) - radix_tree_delete(&dma_active_cacheline, cln); - spin_unlock_irqrestore(&radix_lock, flags); -} - -/** - * debug_dma_assert_idle() - assert that a page is not undergoing dma - * @page: page to lookup in the dma_active_cacheline tree - * - * Place a call to this routine in cases where the cpu touching the page - * before the dma completes (page is dma_unmapped) will lead to data - * corruption. - */ -void debug_dma_assert_idle(struct page *page) -{ - static struct dma_debug_entry *ents[CACHELINES_PER_PAGE]; - struct dma_debug_entry *entry = NULL; - void **results = (void **) &ents; - unsigned int nents, i; - unsigned long flags; - phys_addr_t cln; - - if (dma_debug_disabled()) - return; - - if (!page) - return; - - cln = (phys_addr_t) page_to_pfn(page) << CACHELINE_PER_PAGE_SHIFT; - spin_lock_irqsave(&radix_lock, flags); - nents = radix_tree_gang_lookup(&dma_active_cacheline, results, cln, - CACHELINES_PER_PAGE); - for (i = 0; i < nents; i++) { - phys_addr_t ent_cln = to_cacheline_number(ents[i]); - - if (ent_cln == cln) { - entry = ents[i]; - break; - } else if (ent_cln >= cln + CACHELINES_PER_PAGE) - break; - } - spin_unlock_irqrestore(&radix_lock, flags); - - if (!entry) - return; - - cln = to_cacheline_number(entry); - err_printk(entry->dev, entry, - "DMA-API: cpu touching an active dma mapped cacheline [cln=%pa]\n", - &cln); -} - -/* - * Wrapper function for adding an entry to the hash. - * This function takes care of locking itself. - */ -static void add_dma_entry(struct dma_debug_entry *entry) -{ - struct hash_bucket *bucket; - unsigned long flags; - int rc; - - bucket = get_hash_bucket(entry, &flags); - hash_bucket_add(bucket, entry); - put_hash_bucket(bucket, &flags); - - rc = active_cacheline_insert(entry); - if (rc == -ENOMEM) { - pr_err("DMA-API: cacheline tracking ENOMEM, dma-debug disabled\n"); - global_disable = true; - } - - /* TODO: report -EEXIST errors here as overlapping mappings are - * not supported by the DMA API - */ -} - -static struct dma_debug_entry *__dma_entry_alloc(void) -{ - struct dma_debug_entry *entry; - - entry = list_entry(free_entries.next, struct dma_debug_entry, list); - list_del(&entry->list); - memset(entry, 0, sizeof(*entry)); - - num_free_entries -= 1; - if (num_free_entries < min_free_entries) - min_free_entries = num_free_entries; - - return entry; -} - -/* struct dma_entry allocator - * - * The next two functions implement the allocator for - * struct dma_debug_entries. - */ -static struct dma_debug_entry *dma_entry_alloc(void) -{ - struct dma_debug_entry *entry; - unsigned long flags; - - spin_lock_irqsave(&free_entries_lock, flags); - - if (list_empty(&free_entries)) { - global_disable = true; - spin_unlock_irqrestore(&free_entries_lock, flags); - pr_err("DMA-API: debugging out of memory - disabling\n"); - return NULL; - } - - entry = __dma_entry_alloc(); - - spin_unlock_irqrestore(&free_entries_lock, flags); - -#ifdef CONFIG_STACKTRACE - entry->stacktrace.max_entries = DMA_DEBUG_STACKTRACE_ENTRIES; - entry->stacktrace.entries = entry->st_entries; - entry->stacktrace.skip = 2; - save_stack_trace(&entry->stacktrace); -#endif - - return entry; -} - -static void dma_entry_free(struct dma_debug_entry *entry) -{ - unsigned long flags; - - active_cacheline_remove(entry); - - /* - * add to beginning of the list - this way the entries are - * more likely cache hot when they are reallocated. - */ - spin_lock_irqsave(&free_entries_lock, flags); - list_add(&entry->list, &free_entries); - num_free_entries += 1; - spin_unlock_irqrestore(&free_entries_lock, flags); -} - -int dma_debug_resize_entries(u32 num_entries) -{ - int i, delta, ret = 0; - unsigned long flags; - struct dma_debug_entry *entry; - LIST_HEAD(tmp); - - spin_lock_irqsave(&free_entries_lock, flags); - - if (nr_total_entries < num_entries) { - delta = num_entries - nr_total_entries; - - spin_unlock_irqrestore(&free_entries_lock, flags); - - for (i = 0; i < delta; i++) { - entry = kzalloc(sizeof(*entry), GFP_KERNEL); - if (!entry) - break; - - list_add_tail(&entry->list, &tmp); - } - - spin_lock_irqsave(&free_entries_lock, flags); - - list_splice(&tmp, &free_entries); - nr_total_entries += i; - num_free_entries += i; - } else { - delta = nr_total_entries - num_entries; - - for (i = 0; i < delta && !list_empty(&free_entries); i++) { - entry = __dma_entry_alloc(); - kfree(entry); - } - - nr_total_entries -= i; - } - - if (nr_total_entries != num_entries) - ret = 1; - - spin_unlock_irqrestore(&free_entries_lock, flags); - - return ret; -} - -/* - * DMA-API debugging init code - * - * The init code does two things: - * 1. Initialize core data structures - * 2. Preallocate a given number of dma_debug_entry structs - */ - -static int prealloc_memory(u32 num_entries) -{ - struct dma_debug_entry *entry, *next_entry; - int i; - - for (i = 0; i < num_entries; ++i) { - entry = kzalloc(sizeof(*entry), GFP_KERNEL); - if (!entry) - goto out_err; - - list_add_tail(&entry->list, &free_entries); - } - - num_free_entries = num_entries; - min_free_entries = num_entries; - - pr_info("DMA-API: preallocated %d debug entries\n", num_entries); - - return 0; - -out_err: - - list_for_each_entry_safe(entry, next_entry, &free_entries, list) { - list_del(&entry->list); - kfree(entry); - } - - return -ENOMEM; -} - -static ssize_t filter_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - char buf[NAME_MAX_LEN + 1]; - unsigned long flags; - int len; - - if (!current_driver_name[0]) - return 0; - - /* - * We can't copy to userspace directly because current_driver_name can - * only be read under the driver_name_lock with irqs disabled. So - * create a temporary copy first. - */ - read_lock_irqsave(&driver_name_lock, flags); - len = scnprintf(buf, NAME_MAX_LEN + 1, "%s\n", current_driver_name); - read_unlock_irqrestore(&driver_name_lock, flags); - - return simple_read_from_buffer(user_buf, count, ppos, buf, len); -} - -static ssize_t filter_write(struct file *file, const char __user *userbuf, - size_t count, loff_t *ppos) -{ - char buf[NAME_MAX_LEN]; - unsigned long flags; - size_t len; - int i; - - /* - * We can't copy from userspace directly. Access to - * current_driver_name is protected with a write_lock with irqs - * disabled. Since copy_from_user can fault and may sleep we - * need to copy to temporary buffer first - */ - len = min(count, (size_t)(NAME_MAX_LEN - 1)); - if (copy_from_user(buf, userbuf, len)) - return -EFAULT; - - buf[len] = 0; - - write_lock_irqsave(&driver_name_lock, flags); - - /* - * Now handle the string we got from userspace very carefully. - * The rules are: - * - only use the first token we got - * - token delimiter is everything looking like a space - * character (' ', '\n', '\t' ...) - * - */ - if (!isalnum(buf[0])) { - /* - * If the first character userspace gave us is not - * alphanumerical then assume the filter should be - * switched off. - */ - if (current_driver_name[0]) - pr_info("DMA-API: switching off dma-debug driver filter\n"); - current_driver_name[0] = 0; - current_driver = NULL; - goto out_unlock; - } - - /* - * Now parse out the first token and use it as the name for the - * driver to filter for. - */ - for (i = 0; i < NAME_MAX_LEN - 1; ++i) { - current_driver_name[i] = buf[i]; - if (isspace(buf[i]) || buf[i] == ' ' || buf[i] == 0) - break; - } - current_driver_name[i] = 0; - current_driver = NULL; - - pr_info("DMA-API: enable driver filter for driver [%s]\n", - current_driver_name); - -out_unlock: - write_unlock_irqrestore(&driver_name_lock, flags); - - return count; -} - -static const struct file_operations filter_fops = { - .read = filter_read, - .write = filter_write, - .llseek = default_llseek, -}; - -static int dma_debug_fs_init(void) -{ - dma_debug_dent = debugfs_create_dir("dma-api", NULL); - if (!dma_debug_dent) { - pr_err("DMA-API: can not create debugfs directory\n"); - return -ENOMEM; - } - - global_disable_dent = debugfs_create_bool("disabled", 0444, - dma_debug_dent, - &global_disable); - if (!global_disable_dent) - goto out_err; - - error_count_dent = debugfs_create_u32("error_count", 0444, - dma_debug_dent, &error_count); - if (!error_count_dent) - goto out_err; - - show_all_errors_dent = debugfs_create_u32("all_errors", 0644, - dma_debug_dent, - &show_all_errors); - if (!show_all_errors_dent) - goto out_err; - - show_num_errors_dent = debugfs_create_u32("num_errors", 0644, - dma_debug_dent, - &show_num_errors); - if (!show_num_errors_dent) - goto out_err; - - num_free_entries_dent = debugfs_create_u32("num_free_entries", 0444, - dma_debug_dent, - &num_free_entries); - if (!num_free_entries_dent) - goto out_err; - - min_free_entries_dent = debugfs_create_u32("min_free_entries", 0444, - dma_debug_dent, - &min_free_entries); - if (!min_free_entries_dent) - goto out_err; - - filter_dent = debugfs_create_file("driver_filter", 0644, - dma_debug_dent, NULL, &filter_fops); - if (!filter_dent) - goto out_err; - - return 0; - -out_err: - debugfs_remove_recursive(dma_debug_dent); - - return -ENOMEM; -} - -static int device_dma_allocations(struct device *dev, struct dma_debug_entry **out_entry) -{ - struct dma_debug_entry *entry; - unsigned long flags; - int count = 0, i; - - for (i = 0; i < HASH_SIZE; ++i) { - spin_lock_irqsave(&dma_entry_hash[i].lock, flags); - list_for_each_entry(entry, &dma_entry_hash[i].list, list) { - if (entry->dev == dev) { - count += 1; - *out_entry = entry; - } - } - spin_unlock_irqrestore(&dma_entry_hash[i].lock, flags); - } - - return count; -} - -static int dma_debug_device_change(struct notifier_block *nb, unsigned long action, void *data) -{ - struct device *dev = data; - struct dma_debug_entry *uninitialized_var(entry); - int count; - - if (dma_debug_disabled()) - return 0; - - switch (action) { - case BUS_NOTIFY_UNBOUND_DRIVER: - count = device_dma_allocations(dev, &entry); - if (count == 0) - break; - err_printk(dev, entry, "DMA-API: device driver has pending " - "DMA allocations while released from device " - "[count=%d]\n" - "One of leaked entries details: " - "[device address=0x%016llx] [size=%llu bytes] " - "[mapped with %s] [mapped as %s]\n", - count, entry->dev_addr, entry->size, - dir2name[entry->direction], type2name[entry->type]); - break; - default: - break; - } - - return 0; -} - -void dma_debug_add_bus(struct bus_type *bus) -{ - struct notifier_block *nb; - - if (dma_debug_disabled()) - return; - - nb = kzalloc(sizeof(struct notifier_block), GFP_KERNEL); - if (nb == NULL) { - pr_err("dma_debug_add_bus: out of memory\n"); - return; - } - - nb->notifier_call = dma_debug_device_change; - - bus_register_notifier(bus, nb); -} - -static int dma_debug_init(void) -{ - int i; - - /* Do not use dma_debug_initialized here, since we really want to be - * called to set dma_debug_initialized - */ - if (global_disable) - return 0; - - for (i = 0; i < HASH_SIZE; ++i) { - INIT_LIST_HEAD(&dma_entry_hash[i].list); - spin_lock_init(&dma_entry_hash[i].lock); - } - - if (dma_debug_fs_init() != 0) { - pr_err("DMA-API: error creating debugfs entries - disabling\n"); - global_disable = true; - - return 0; - } - - if (prealloc_memory(nr_prealloc_entries) != 0) { - pr_err("DMA-API: debugging out of memory error - disabled\n"); - global_disable = true; - - return 0; - } - - nr_total_entries = num_free_entries; - - dma_debug_initialized = true; - - pr_info("DMA-API: debugging enabled by kernel config\n"); - return 0; -} -core_initcall(dma_debug_init); - -static __init int dma_debug_cmdline(char *str) -{ - if (!str) - return -EINVAL; - - if (strncmp(str, "off", 3) == 0) { - pr_info("DMA-API: debugging disabled on kernel command line\n"); - global_disable = true; - } - - return 0; -} - -static __init int dma_debug_entries_cmdline(char *str) -{ - if (!str) - return -EINVAL; - if (!get_option(&str, &nr_prealloc_entries)) - nr_prealloc_entries = PREALLOC_DMA_DEBUG_ENTRIES; - return 0; -} - -__setup("dma_debug=", dma_debug_cmdline); -__setup("dma_debug_entries=", dma_debug_entries_cmdline); - -static void check_unmap(struct dma_debug_entry *ref) -{ - struct dma_debug_entry *entry; - struct hash_bucket *bucket; - unsigned long flags; - - bucket = get_hash_bucket(ref, &flags); - entry = bucket_find_exact(bucket, ref); - - if (!entry) { - /* must drop lock before calling dma_mapping_error */ - put_hash_bucket(bucket, &flags); - - if (dma_mapping_error(ref->dev, ref->dev_addr)) { - err_printk(ref->dev, NULL, - "DMA-API: device driver tries to free an " - "invalid DMA memory address\n"); - } else { - err_printk(ref->dev, NULL, - "DMA-API: device driver tries to free DMA " - "memory it has not allocated [device " - "address=0x%016llx] [size=%llu bytes]\n", - ref->dev_addr, ref->size); - } - return; - } - - if (ref->size != entry->size) { - err_printk(ref->dev, entry, "DMA-API: device driver frees " - "DMA memory with different size " - "[device address=0x%016llx] [map size=%llu bytes] " - "[unmap size=%llu bytes]\n", - ref->dev_addr, entry->size, ref->size); - } - - if (ref->type != entry->type) { - err_printk(ref->dev, entry, "DMA-API: device driver frees " - "DMA memory with wrong function " - "[device address=0x%016llx] [size=%llu bytes] " - "[mapped as %s] [unmapped as %s]\n", - ref->dev_addr, ref->size, - type2name[entry->type], type2name[ref->type]); - } else if ((entry->type == dma_debug_coherent) && - (phys_addr(ref) != phys_addr(entry))) { - err_printk(ref->dev, entry, "DMA-API: device driver frees " - "DMA memory with different CPU address " - "[device address=0x%016llx] [size=%llu bytes] " - "[cpu alloc address=0x%016llx] " - "[cpu free address=0x%016llx]", - ref->dev_addr, ref->size, - phys_addr(entry), - phys_addr(ref)); - } - - if (ref->sg_call_ents && ref->type == dma_debug_sg && - ref->sg_call_ents != entry->sg_call_ents) { - err_printk(ref->dev, entry, "DMA-API: device driver frees " - "DMA sg list with different entry count " - "[map count=%d] [unmap count=%d]\n", - entry->sg_call_ents, ref->sg_call_ents); - } - - /* - * This may be no bug in reality - but most implementations of the - * DMA API don't handle this properly, so check for it here - */ - if (ref->direction != entry->direction) { - err_printk(ref->dev, entry, "DMA-API: device driver frees " - "DMA memory with different direction " - "[device address=0x%016llx] [size=%llu bytes] " - "[mapped with %s] [unmapped with %s]\n", - ref->dev_addr, ref->size, - dir2name[entry->direction], - dir2name[ref->direction]); - } - - /* - * Drivers should use dma_mapping_error() to check the returned - * addresses of dma_map_single() and dma_map_page(). - * If not, print this warning message. See Documentation/DMA-API.txt. - */ - if (entry->map_err_type == MAP_ERR_NOT_CHECKED) { - err_printk(ref->dev, entry, - "DMA-API: device driver failed to check map error" - "[device address=0x%016llx] [size=%llu bytes] " - "[mapped as %s]", - ref->dev_addr, ref->size, - type2name[entry->type]); - } - - hash_bucket_del(entry); - dma_entry_free(entry); - - put_hash_bucket(bucket, &flags); -} - -static void check_for_stack(struct device *dev, - struct page *page, size_t offset) -{ - void *addr; - struct vm_struct *stack_vm_area = task_stack_vm_area(current); - - if (!stack_vm_area) { - /* Stack is direct-mapped. */ - if (PageHighMem(page)) - return; - addr = page_address(page) + offset; - if (object_is_on_stack(addr)) - err_printk(dev, NULL, "DMA-API: device driver maps memory from stack [addr=%p]\n", addr); - } else { - /* Stack is vmalloced. */ - int i; - - for (i = 0; i < stack_vm_area->nr_pages; i++) { - if (page != stack_vm_area->pages[i]) - continue; - - addr = (u8 *)current->stack + i * PAGE_SIZE + offset; - err_printk(dev, NULL, "DMA-API: device driver maps memory from stack [probable addr=%p]\n", addr); - break; - } - } -} - -static inline bool overlap(void *addr, unsigned long len, void *start, void *end) -{ - unsigned long a1 = (unsigned long)addr; - unsigned long b1 = a1 + len; - unsigned long a2 = (unsigned long)start; - unsigned long b2 = (unsigned long)end; - - return !(b1 <= a2 || a1 >= b2); -} - -static void check_for_illegal_area(struct device *dev, void *addr, unsigned long len) -{ - if (overlap(addr, len, _stext, _etext) || - overlap(addr, len, __start_rodata, __end_rodata)) - err_printk(dev, NULL, "DMA-API: device driver maps memory from kernel text or rodata [addr=%p] [len=%lu]\n", addr, len); -} - -static void check_sync(struct device *dev, - struct dma_debug_entry *ref, - bool to_cpu) -{ - struct dma_debug_entry *entry; - struct hash_bucket *bucket; - unsigned long flags; - - bucket = get_hash_bucket(ref, &flags); - - entry = bucket_find_contain(&bucket, ref, &flags); - - if (!entry) { - err_printk(dev, NULL, "DMA-API: device driver tries " - "to sync DMA memory it has not allocated " - "[device address=0x%016llx] [size=%llu bytes]\n", - (unsigned long long)ref->dev_addr, ref->size); - goto out; - } - - if (ref->size > entry->size) { - err_printk(dev, entry, "DMA-API: device driver syncs" - " DMA memory outside allocated range " - "[device address=0x%016llx] " - "[allocation size=%llu bytes] " - "[sync offset+size=%llu]\n", - entry->dev_addr, entry->size, - ref->size); - } - - if (entry->direction == DMA_BIDIRECTIONAL) - goto out; - - if (ref->direction != entry->direction) { - err_printk(dev, entry, "DMA-API: device driver syncs " - "DMA memory with different direction " - "[device address=0x%016llx] [size=%llu bytes] " - "[mapped with %s] [synced with %s]\n", - (unsigned long long)ref->dev_addr, entry->size, - dir2name[entry->direction], - dir2name[ref->direction]); - } - - if (to_cpu && !(entry->direction == DMA_FROM_DEVICE) && - !(ref->direction == DMA_TO_DEVICE)) - err_printk(dev, entry, "DMA-API: device driver syncs " - "device read-only DMA memory for cpu " - "[device address=0x%016llx] [size=%llu bytes] " - "[mapped with %s] [synced with %s]\n", - (unsigned long long)ref->dev_addr, entry->size, - dir2name[entry->direction], - dir2name[ref->direction]); - - if (!to_cpu && !(entry->direction == DMA_TO_DEVICE) && - !(ref->direction == DMA_FROM_DEVICE)) - err_printk(dev, entry, "DMA-API: device driver syncs " - "device write-only DMA memory to device " - "[device address=0x%016llx] [size=%llu bytes] " - "[mapped with %s] [synced with %s]\n", - (unsigned long long)ref->dev_addr, entry->size, - dir2name[entry->direction], - dir2name[ref->direction]); - - if (ref->sg_call_ents && ref->type == dma_debug_sg && - ref->sg_call_ents != entry->sg_call_ents) { - err_printk(ref->dev, entry, "DMA-API: device driver syncs " - "DMA sg list with different entry count " - "[map count=%d] [sync count=%d]\n", - entry->sg_call_ents, ref->sg_call_ents); - } - -out: - put_hash_bucket(bucket, &flags); -} - -static void check_sg_segment(struct device *dev, struct scatterlist *sg) -{ -#ifdef CONFIG_DMA_API_DEBUG_SG - unsigned int max_seg = dma_get_max_seg_size(dev); - u64 start, end, boundary = dma_get_seg_boundary(dev); - - /* - * Either the driver forgot to set dma_parms appropriately, or - * whoever generated the list forgot to check them. - */ - if (sg->length > max_seg) - err_printk(dev, NULL, "DMA-API: mapping sg segment longer than device claims to support [len=%u] [max=%u]\n", - sg->length, max_seg); - /* - * In some cases this could potentially be the DMA API - * implementation's fault, but it would usually imply that - * the scatterlist was built inappropriately to begin with. - */ - start = sg_dma_address(sg); - end = start + sg_dma_len(sg) - 1; - if ((start ^ end) & ~boundary) - err_printk(dev, NULL, "DMA-API: mapping sg segment across boundary [start=0x%016llx] [end=0x%016llx] [boundary=0x%016llx]\n", - start, end, boundary); -#endif -} - -void debug_dma_map_page(struct device *dev, struct page *page, size_t offset, - size_t size, int direction, dma_addr_t dma_addr, - bool map_single) -{ - struct dma_debug_entry *entry; - - if (unlikely(dma_debug_disabled())) - return; - - if (dma_mapping_error(dev, dma_addr)) - return; - - entry = dma_entry_alloc(); - if (!entry) - return; - - entry->dev = dev; - entry->type = dma_debug_page; - entry->pfn = page_to_pfn(page); - entry->offset = offset, - entry->dev_addr = dma_addr; - entry->size = size; - entry->direction = direction; - entry->map_err_type = MAP_ERR_NOT_CHECKED; - - if (map_single) - entry->type = dma_debug_single; - - check_for_stack(dev, page, offset); - - if (!PageHighMem(page)) { - void *addr = page_address(page) + offset; - - check_for_illegal_area(dev, addr, size); - } - - add_dma_entry(entry); -} -EXPORT_SYMBOL(debug_dma_map_page); - -void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - struct dma_debug_entry ref; - struct dma_debug_entry *entry; - struct hash_bucket *bucket; - unsigned long flags; - - if (unlikely(dma_debug_disabled())) - return; - - ref.dev = dev; - ref.dev_addr = dma_addr; - bucket = get_hash_bucket(&ref, &flags); - - list_for_each_entry(entry, &bucket->list, list) { - if (!exact_match(&ref, entry)) - continue; - - /* - * The same physical address can be mapped multiple - * times. Without a hardware IOMMU this results in the - * same device addresses being put into the dma-debug - * hash multiple times too. This can result in false - * positives being reported. Therefore we implement a - * best-fit algorithm here which updates the first entry - * from the hash which fits the reference value and is - * not currently listed as being checked. - */ - if (entry->map_err_type == MAP_ERR_NOT_CHECKED) { - entry->map_err_type = MAP_ERR_CHECKED; - break; - } - } - - put_hash_bucket(bucket, &flags); -} -EXPORT_SYMBOL(debug_dma_mapping_error); - -void debug_dma_unmap_page(struct device *dev, dma_addr_t addr, - size_t size, int direction, bool map_single) -{ - struct dma_debug_entry ref = { - .type = dma_debug_page, - .dev = dev, - .dev_addr = addr, - .size = size, - .direction = direction, - }; - - if (unlikely(dma_debug_disabled())) - return; - - if (map_single) - ref.type = dma_debug_single; - - check_unmap(&ref); -} -EXPORT_SYMBOL(debug_dma_unmap_page); - -void debug_dma_map_sg(struct device *dev, struct scatterlist *sg, - int nents, int mapped_ents, int direction) -{ - struct dma_debug_entry *entry; - struct scatterlist *s; - int i; - - if (unlikely(dma_debug_disabled())) - return; - - for_each_sg(sg, s, mapped_ents, i) { - entry = dma_entry_alloc(); - if (!entry) - return; - - entry->type = dma_debug_sg; - entry->dev = dev; - entry->pfn = page_to_pfn(sg_page(s)); - entry->offset = s->offset, - entry->size = sg_dma_len(s); - entry->dev_addr = sg_dma_address(s); - entry->direction = direction; - entry->sg_call_ents = nents; - entry->sg_mapped_ents = mapped_ents; - - check_for_stack(dev, sg_page(s), s->offset); - - if (!PageHighMem(sg_page(s))) { - check_for_illegal_area(dev, sg_virt(s), sg_dma_len(s)); - } - - check_sg_segment(dev, s); - - add_dma_entry(entry); - } -} -EXPORT_SYMBOL(debug_dma_map_sg); - -static int get_nr_mapped_entries(struct device *dev, - struct dma_debug_entry *ref) -{ - struct dma_debug_entry *entry; - struct hash_bucket *bucket; - unsigned long flags; - int mapped_ents; - - bucket = get_hash_bucket(ref, &flags); - entry = bucket_find_exact(bucket, ref); - mapped_ents = 0; - - if (entry) - mapped_ents = entry->sg_mapped_ents; - put_hash_bucket(bucket, &flags); - - return mapped_ents; -} - -void debug_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, - int nelems, int dir) -{ - struct scatterlist *s; - int mapped_ents = 0, i; - - if (unlikely(dma_debug_disabled())) - return; - - for_each_sg(sglist, s, nelems, i) { - - struct dma_debug_entry ref = { - .type = dma_debug_sg, - .dev = dev, - .pfn = page_to_pfn(sg_page(s)), - .offset = s->offset, - .dev_addr = sg_dma_address(s), - .size = sg_dma_len(s), - .direction = dir, - .sg_call_ents = nelems, - }; - - if (mapped_ents && i >= mapped_ents) - break; - - if (!i) - mapped_ents = get_nr_mapped_entries(dev, &ref); - - check_unmap(&ref); - } -} -EXPORT_SYMBOL(debug_dma_unmap_sg); - -void debug_dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t dma_addr, void *virt) -{ - struct dma_debug_entry *entry; - - if (unlikely(dma_debug_disabled())) - return; - - if (unlikely(virt == NULL)) - return; - - /* handle vmalloc and linear addresses */ - if (!is_vmalloc_addr(virt) && !virt_addr_valid(virt)) - return; - - entry = dma_entry_alloc(); - if (!entry) - return; - - entry->type = dma_debug_coherent; - entry->dev = dev; - entry->offset = offset_in_page(virt); - entry->size = size; - entry->dev_addr = dma_addr; - entry->direction = DMA_BIDIRECTIONAL; - - if (is_vmalloc_addr(virt)) - entry->pfn = vmalloc_to_pfn(virt); - else - entry->pfn = page_to_pfn(virt_to_page(virt)); - - add_dma_entry(entry); -} -EXPORT_SYMBOL(debug_dma_alloc_coherent); - -void debug_dma_free_coherent(struct device *dev, size_t size, - void *virt, dma_addr_t addr) -{ - struct dma_debug_entry ref = { - .type = dma_debug_coherent, - .dev = dev, - .offset = offset_in_page(virt), - .dev_addr = addr, - .size = size, - .direction = DMA_BIDIRECTIONAL, - }; - - /* handle vmalloc and linear addresses */ - if (!is_vmalloc_addr(virt) && !virt_addr_valid(virt)) - return; - - if (is_vmalloc_addr(virt)) - ref.pfn = vmalloc_to_pfn(virt); - else - ref.pfn = page_to_pfn(virt_to_page(virt)); - - if (unlikely(dma_debug_disabled())) - return; - - check_unmap(&ref); -} -EXPORT_SYMBOL(debug_dma_free_coherent); - -void debug_dma_map_resource(struct device *dev, phys_addr_t addr, size_t size, - int direction, dma_addr_t dma_addr) -{ - struct dma_debug_entry *entry; - - if (unlikely(dma_debug_disabled())) - return; - - entry = dma_entry_alloc(); - if (!entry) - return; - - entry->type = dma_debug_resource; - entry->dev = dev; - entry->pfn = PHYS_PFN(addr); - entry->offset = offset_in_page(addr); - entry->size = size; - entry->dev_addr = dma_addr; - entry->direction = direction; - entry->map_err_type = MAP_ERR_NOT_CHECKED; - - add_dma_entry(entry); -} -EXPORT_SYMBOL(debug_dma_map_resource); - -void debug_dma_unmap_resource(struct device *dev, dma_addr_t dma_addr, - size_t size, int direction) -{ - struct dma_debug_entry ref = { - .type = dma_debug_resource, - .dev = dev, - .dev_addr = dma_addr, - .size = size, - .direction = direction, - }; - - if (unlikely(dma_debug_disabled())) - return; - - check_unmap(&ref); -} -EXPORT_SYMBOL(debug_dma_unmap_resource); - -void debug_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, - size_t size, int direction) -{ - struct dma_debug_entry ref; - - if (unlikely(dma_debug_disabled())) - return; - - ref.type = dma_debug_single; - ref.dev = dev; - ref.dev_addr = dma_handle; - ref.size = size; - ref.direction = direction; - ref.sg_call_ents = 0; - - check_sync(dev, &ref, true); -} -EXPORT_SYMBOL(debug_dma_sync_single_for_cpu); - -void debug_dma_sync_single_for_device(struct device *dev, - dma_addr_t dma_handle, size_t size, - int direction) -{ - struct dma_debug_entry ref; - - if (unlikely(dma_debug_disabled())) - return; - - ref.type = dma_debug_single; - ref.dev = dev; - ref.dev_addr = dma_handle; - ref.size = size; - ref.direction = direction; - ref.sg_call_ents = 0; - - check_sync(dev, &ref, false); -} -EXPORT_SYMBOL(debug_dma_sync_single_for_device); - -void debug_dma_sync_single_range_for_cpu(struct device *dev, - dma_addr_t dma_handle, - unsigned long offset, size_t size, - int direction) -{ - struct dma_debug_entry ref; - - if (unlikely(dma_debug_disabled())) - return; - - ref.type = dma_debug_single; - ref.dev = dev; - ref.dev_addr = dma_handle; - ref.size = offset + size; - ref.direction = direction; - ref.sg_call_ents = 0; - - check_sync(dev, &ref, true); -} -EXPORT_SYMBOL(debug_dma_sync_single_range_for_cpu); - -void debug_dma_sync_single_range_for_device(struct device *dev, - dma_addr_t dma_handle, - unsigned long offset, - size_t size, int direction) -{ - struct dma_debug_entry ref; - - if (unlikely(dma_debug_disabled())) - return; - - ref.type = dma_debug_single; - ref.dev = dev; - ref.dev_addr = dma_handle; - ref.size = offset + size; - ref.direction = direction; - ref.sg_call_ents = 0; - - check_sync(dev, &ref, false); -} -EXPORT_SYMBOL(debug_dma_sync_single_range_for_device); - -void debug_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nelems, int direction) -{ - struct scatterlist *s; - int mapped_ents = 0, i; - - if (unlikely(dma_debug_disabled())) - return; - - for_each_sg(sg, s, nelems, i) { - - struct dma_debug_entry ref = { - .type = dma_debug_sg, - .dev = dev, - .pfn = page_to_pfn(sg_page(s)), - .offset = s->offset, - .dev_addr = sg_dma_address(s), - .size = sg_dma_len(s), - .direction = direction, - .sg_call_ents = nelems, - }; - - if (!i) - mapped_ents = get_nr_mapped_entries(dev, &ref); - - if (i >= mapped_ents) - break; - - check_sync(dev, &ref, true); - } -} -EXPORT_SYMBOL(debug_dma_sync_sg_for_cpu); - -void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nelems, int direction) -{ - struct scatterlist *s; - int mapped_ents = 0, i; - - if (unlikely(dma_debug_disabled())) - return; - - for_each_sg(sg, s, nelems, i) { - - struct dma_debug_entry ref = { - .type = dma_debug_sg, - .dev = dev, - .pfn = page_to_pfn(sg_page(s)), - .offset = s->offset, - .dev_addr = sg_dma_address(s), - .size = sg_dma_len(s), - .direction = direction, - .sg_call_ents = nelems, - }; - if (!i) - mapped_ents = get_nr_mapped_entries(dev, &ref); - - if (i >= mapped_ents) - break; - - check_sync(dev, &ref, false); - } -} -EXPORT_SYMBOL(debug_dma_sync_sg_for_device); - -static int __init dma_debug_driver_setup(char *str) -{ - int i; - - for (i = 0; i < NAME_MAX_LEN - 1; ++i, ++str) { - current_driver_name[i] = *str; - if (*str == 0) - break; - } - - if (current_driver_name[0]) - pr_info("DMA-API: enable driver filter for driver [%s]\n", - current_driver_name); - - - return 1; -} -__setup("dma_debug_driver=", dma_debug_driver_setup); diff --git a/lib/dma-direct.c b/lib/dma-direct.c deleted file mode 100644 index 8be8106270c2..000000000000 --- a/lib/dma-direct.c +++ /dev/null @@ -1,204 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * DMA operations that map physical memory directly without using an IOMMU or - * flushing caches. - */ -#include -#include -#include -#include -#include -#include -#include - -#define DIRECT_MAPPING_ERROR 0 - -/* - * Most architectures use ZONE_DMA for the first 16 Megabytes, but - * some use it for entirely different regions: - */ -#ifndef ARCH_ZONE_DMA_BITS -#define ARCH_ZONE_DMA_BITS 24 -#endif - -/* - * For AMD SEV all DMA must be to unencrypted addresses. - */ -static inline bool force_dma_unencrypted(void) -{ - return sev_active(); -} - -static bool -check_addr(struct device *dev, dma_addr_t dma_addr, size_t size, - const char *caller) -{ - if (unlikely(dev && !dma_capable(dev, dma_addr, size))) { - if (!dev->dma_mask) { - dev_err(dev, - "%s: call on device without dma_mask\n", - caller); - return false; - } - - if (*dev->dma_mask >= DMA_BIT_MASK(32)) { - dev_err(dev, - "%s: overflow %pad+%zu of device mask %llx\n", - caller, &dma_addr, size, *dev->dma_mask); - } - return false; - } - return true; -} - -static bool dma_coherent_ok(struct device *dev, phys_addr_t phys, size_t size) -{ - dma_addr_t addr = force_dma_unencrypted() ? - __phys_to_dma(dev, phys) : phys_to_dma(dev, phys); - return addr + size - 1 <= dev->coherent_dma_mask; -} - -void *dma_direct_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t gfp, unsigned long attrs) -{ - unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT; - int page_order = get_order(size); - struct page *page = NULL; - void *ret; - - /* we always manually zero the memory once we are done: */ - gfp &= ~__GFP_ZERO; - - /* GFP_DMA32 and GFP_DMA are no ops without the corresponding zones: */ - if (dev->coherent_dma_mask <= DMA_BIT_MASK(ARCH_ZONE_DMA_BITS)) - gfp |= GFP_DMA; - if (dev->coherent_dma_mask <= DMA_BIT_MASK(32) && !(gfp & GFP_DMA)) - gfp |= GFP_DMA32; - -again: - /* CMA can be used only in the context which permits sleeping */ - if (gfpflags_allow_blocking(gfp)) { - page = dma_alloc_from_contiguous(dev, count, page_order, gfp); - if (page && !dma_coherent_ok(dev, page_to_phys(page), size)) { - dma_release_from_contiguous(dev, page, count); - page = NULL; - } - } - if (!page) - page = alloc_pages_node(dev_to_node(dev), gfp, page_order); - - if (page && !dma_coherent_ok(dev, page_to_phys(page), size)) { - __free_pages(page, page_order); - page = NULL; - - if (IS_ENABLED(CONFIG_ZONE_DMA32) && - dev->coherent_dma_mask < DMA_BIT_MASK(64) && - !(gfp & (GFP_DMA32 | GFP_DMA))) { - gfp |= GFP_DMA32; - goto again; - } - - if (IS_ENABLED(CONFIG_ZONE_DMA) && - dev->coherent_dma_mask < DMA_BIT_MASK(32) && - !(gfp & GFP_DMA)) { - gfp = (gfp & ~GFP_DMA32) | GFP_DMA; - goto again; - } - } - - if (!page) - return NULL; - ret = page_address(page); - if (force_dma_unencrypted()) { - set_memory_decrypted((unsigned long)ret, 1 << page_order); - *dma_handle = __phys_to_dma(dev, page_to_phys(page)); - } else { - *dma_handle = phys_to_dma(dev, page_to_phys(page)); - } - memset(ret, 0, size); - return ret; -} - -/* - * NOTE: this function must never look at the dma_addr argument, because we want - * to be able to use it as a helper for iommu implementations as well. - */ -void dma_direct_free(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_addr, unsigned long attrs) -{ - unsigned int count = PAGE_ALIGN(size) >> PAGE_SHIFT; - unsigned int page_order = get_order(size); - - if (force_dma_unencrypted()) - set_memory_encrypted((unsigned long)cpu_addr, 1 << page_order); - if (!dma_release_from_contiguous(dev, virt_to_page(cpu_addr), count)) - free_pages((unsigned long)cpu_addr, page_order); -} - -dma_addr_t dma_direct_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, enum dma_data_direction dir, - unsigned long attrs) -{ - dma_addr_t dma_addr = phys_to_dma(dev, page_to_phys(page)) + offset; - - if (!check_addr(dev, dma_addr, size, __func__)) - return DIRECT_MAPPING_ERROR; - return dma_addr; -} - -int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents, - enum dma_data_direction dir, unsigned long attrs) -{ - int i; - struct scatterlist *sg; - - for_each_sg(sgl, sg, nents, i) { - BUG_ON(!sg_page(sg)); - - sg_dma_address(sg) = phys_to_dma(dev, sg_phys(sg)); - if (!check_addr(dev, sg_dma_address(sg), sg->length, __func__)) - return 0; - sg_dma_len(sg) = sg->length; - } - - return nents; -} - -int dma_direct_supported(struct device *dev, u64 mask) -{ -#ifdef CONFIG_ZONE_DMA - if (mask < DMA_BIT_MASK(ARCH_ZONE_DMA_BITS)) - return 0; -#else - /* - * Because 32-bit DMA masks are so common we expect every architecture - * to be able to satisfy them - either by not supporting more physical - * memory, or by providing a ZONE_DMA32. If neither is the case, the - * architecture needs to use an IOMMU instead of the direct mapping. - */ - if (mask < DMA_BIT_MASK(32)) - return 0; -#endif - /* - * Various PCI/PCIe bridges have broken support for > 32bit DMA even - * if the device itself might support it. - */ - if (dev->dma_32bit_limit && mask > DMA_BIT_MASK(32)) - return 0; - return 1; -} - -int dma_direct_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return dma_addr == DIRECT_MAPPING_ERROR; -} - -const struct dma_map_ops dma_direct_ops = { - .alloc = dma_direct_alloc, - .free = dma_direct_free, - .map_page = dma_direct_map_page, - .map_sg = dma_direct_map_sg, - .dma_supported = dma_direct_supported, - .mapping_error = dma_direct_mapping_error, -}; -EXPORT_SYMBOL(dma_direct_ops); diff --git a/lib/dma-noncoherent.c b/lib/dma-noncoherent.c deleted file mode 100644 index 79e9a757387f..000000000000 --- a/lib/dma-noncoherent.c +++ /dev/null @@ -1,102 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2018 Christoph Hellwig. - * - * DMA operations that map physical memory directly without providing cache - * coherence. - */ -#include -#include -#include -#include -#include - -static void dma_noncoherent_sync_single_for_device(struct device *dev, - dma_addr_t addr, size_t size, enum dma_data_direction dir) -{ - arch_sync_dma_for_device(dev, dma_to_phys(dev, addr), size, dir); -} - -static void dma_noncoherent_sync_sg_for_device(struct device *dev, - struct scatterlist *sgl, int nents, enum dma_data_direction dir) -{ - struct scatterlist *sg; - int i; - - for_each_sg(sgl, sg, nents, i) - arch_sync_dma_for_device(dev, sg_phys(sg), sg->length, dir); -} - -static dma_addr_t dma_noncoherent_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, enum dma_data_direction dir, - unsigned long attrs) -{ - dma_addr_t addr; - - addr = dma_direct_map_page(dev, page, offset, size, dir, attrs); - if (!dma_mapping_error(dev, addr) && !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) - arch_sync_dma_for_device(dev, page_to_phys(page) + offset, - size, dir); - return addr; -} - -static int dma_noncoherent_map_sg(struct device *dev, struct scatterlist *sgl, - int nents, enum dma_data_direction dir, unsigned long attrs) -{ - nents = dma_direct_map_sg(dev, sgl, nents, dir, attrs); - if (nents > 0 && !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) - dma_noncoherent_sync_sg_for_device(dev, sgl, nents, dir); - return nents; -} - -#ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU -static void dma_noncoherent_sync_single_for_cpu(struct device *dev, - dma_addr_t addr, size_t size, enum dma_data_direction dir) -{ - arch_sync_dma_for_cpu(dev, dma_to_phys(dev, addr), size, dir); -} - -static void dma_noncoherent_sync_sg_for_cpu(struct device *dev, - struct scatterlist *sgl, int nents, enum dma_data_direction dir) -{ - struct scatterlist *sg; - int i; - - for_each_sg(sgl, sg, nents, i) - arch_sync_dma_for_cpu(dev, sg_phys(sg), sg->length, dir); -} - -static void dma_noncoherent_unmap_page(struct device *dev, dma_addr_t addr, - size_t size, enum dma_data_direction dir, unsigned long attrs) -{ - if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) - dma_noncoherent_sync_single_for_cpu(dev, addr, size, dir); -} - -static void dma_noncoherent_unmap_sg(struct device *dev, struct scatterlist *sgl, - int nents, enum dma_data_direction dir, unsigned long attrs) -{ - if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) - dma_noncoherent_sync_sg_for_cpu(dev, sgl, nents, dir); -} -#endif - -const struct dma_map_ops dma_noncoherent_ops = { - .alloc = arch_dma_alloc, - .free = arch_dma_free, - .mmap = arch_dma_mmap, - .sync_single_for_device = dma_noncoherent_sync_single_for_device, - .sync_sg_for_device = dma_noncoherent_sync_sg_for_device, - .map_page = dma_noncoherent_map_page, - .map_sg = dma_noncoherent_map_sg, -#ifdef CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU - .sync_single_for_cpu = dma_noncoherent_sync_single_for_cpu, - .sync_sg_for_cpu = dma_noncoherent_sync_sg_for_cpu, - .unmap_page = dma_noncoherent_unmap_page, - .unmap_sg = dma_noncoherent_unmap_sg, -#endif - .dma_supported = dma_direct_supported, - .mapping_error = dma_direct_mapping_error, - .cache_sync = arch_dma_cache_sync, -}; -EXPORT_SYMBOL(dma_noncoherent_ops); diff --git a/lib/dma-virt.c b/lib/dma-virt.c deleted file mode 100644 index 8e61a02ef9ca..000000000000 --- a/lib/dma-virt.c +++ /dev/null @@ -1,61 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * lib/dma-virt.c - * - * DMA operations that map to virtual addresses without flushing memory. - */ -#include -#include -#include -#include - -static void *dma_virt_alloc(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp, - unsigned long attrs) -{ - void *ret; - - ret = (void *)__get_free_pages(gfp, get_order(size)); - if (ret) - *dma_handle = (uintptr_t)ret; - return ret; -} - -static void dma_virt_free(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_addr, - unsigned long attrs) -{ - free_pages((unsigned long)cpu_addr, get_order(size)); -} - -static dma_addr_t dma_virt_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir, - unsigned long attrs) -{ - return (uintptr_t)(page_address(page) + offset); -} - -static int dma_virt_map_sg(struct device *dev, struct scatterlist *sgl, - int nents, enum dma_data_direction dir, - unsigned long attrs) -{ - int i; - struct scatterlist *sg; - - for_each_sg(sgl, sg, nents, i) { - BUG_ON(!sg_page(sg)); - sg_dma_address(sg) = (uintptr_t)sg_virt(sg); - sg_dma_len(sg) = sg->length; - } - - return nents; -} - -const struct dma_map_ops dma_virt_ops = { - .alloc = dma_virt_alloc, - .free = dma_virt_free, - .map_page = dma_virt_map_page, - .map_sg = dma_virt_map_sg, -}; -EXPORT_SYMBOL(dma_virt_ops); diff --git a/lib/swiotlb.c b/lib/swiotlb.c deleted file mode 100644 index 04b68d9dffac..000000000000 --- a/lib/swiotlb.c +++ /dev/null @@ -1,1087 +0,0 @@ -/* - * Dynamic DMA mapping support. - * - * This implementation is a fallback for platforms that do not support - * I/O TLBs (aka DMA address translation hardware). - * Copyright (C) 2000 Asit Mallick - * Copyright (C) 2000 Goutham Rao - * Copyright (C) 2000, 2003 Hewlett-Packard Co - * David Mosberger-Tang - * - * 03/05/07 davidm Switch from PCI-DMA to generic device DMA API. - * 00/12/13 davidm Rename to swiotlb.c and add mark_clean() to avoid - * unnecessary i-cache flushing. - * 04/07/.. ak Better overflow handling. Assorted fixes. - * 05/09/10 linville Add support for syncing ranges, support syncing for - * DMA_BIDIRECTIONAL mappings, miscellaneous cleanup. - * 08/12/11 beckyb Add highmem support - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include -#include -#include - -#define CREATE_TRACE_POINTS -#include - -#define OFFSET(val,align) ((unsigned long) \ - ( (val) & ( (align) - 1))) - -#define SLABS_PER_PAGE (1 << (PAGE_SHIFT - IO_TLB_SHIFT)) - -/* - * Minimum IO TLB size to bother booting with. Systems with mainly - * 64bit capable cards will only lightly use the swiotlb. If we can't - * allocate a contiguous 1MB, we're probably in trouble anyway. - */ -#define IO_TLB_MIN_SLABS ((1<<20) >> IO_TLB_SHIFT) - -enum swiotlb_force swiotlb_force; - -/* - * Used to do a quick range check in swiotlb_tbl_unmap_single and - * swiotlb_tbl_sync_single_*, to see if the memory was in fact allocated by this - * API. - */ -static phys_addr_t io_tlb_start, io_tlb_end; - -/* - * The number of IO TLB blocks (in groups of 64) between io_tlb_start and - * io_tlb_end. This is command line adjustable via setup_io_tlb_npages. - */ -static unsigned long io_tlb_nslabs; - -/* - * When the IOMMU overflows we return a fallback buffer. This sets the size. - */ -static unsigned long io_tlb_overflow = 32*1024; - -static phys_addr_t io_tlb_overflow_buffer; - -/* - * This is a free list describing the number of free entries available from - * each index - */ -static unsigned int *io_tlb_list; -static unsigned int io_tlb_index; - -/* - * Max segment that we can provide which (if pages are contingous) will - * not be bounced (unless SWIOTLB_FORCE is set). - */ -unsigned int max_segment; - -/* - * We need to save away the original address corresponding to a mapped entry - * for the sync operations. - */ -#define INVALID_PHYS_ADDR (~(phys_addr_t)0) -static phys_addr_t *io_tlb_orig_addr; - -/* - * Protect the above data structures in the map and unmap calls - */ -static DEFINE_SPINLOCK(io_tlb_lock); - -static int late_alloc; - -static int __init -setup_io_tlb_npages(char *str) -{ - if (isdigit(*str)) { - io_tlb_nslabs = simple_strtoul(str, &str, 0); - /* avoid tail segment of size < IO_TLB_SEGSIZE */ - io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE); - } - if (*str == ',') - ++str; - if (!strcmp(str, "force")) { - swiotlb_force = SWIOTLB_FORCE; - } else if (!strcmp(str, "noforce")) { - swiotlb_force = SWIOTLB_NO_FORCE; - io_tlb_nslabs = 1; - } - - return 0; -} -early_param("swiotlb", setup_io_tlb_npages); -/* make io_tlb_overflow tunable too? */ - -unsigned long swiotlb_nr_tbl(void) -{ - return io_tlb_nslabs; -} -EXPORT_SYMBOL_GPL(swiotlb_nr_tbl); - -unsigned int swiotlb_max_segment(void) -{ - return max_segment; -} -EXPORT_SYMBOL_GPL(swiotlb_max_segment); - -void swiotlb_set_max_segment(unsigned int val) -{ - if (swiotlb_force == SWIOTLB_FORCE) - max_segment = 1; - else - max_segment = rounddown(val, PAGE_SIZE); -} - -/* default to 64MB */ -#define IO_TLB_DEFAULT_SIZE (64UL<<20) -unsigned long swiotlb_size_or_default(void) -{ - unsigned long size; - - size = io_tlb_nslabs << IO_TLB_SHIFT; - - return size ? size : (IO_TLB_DEFAULT_SIZE); -} - -static bool no_iotlb_memory; - -void swiotlb_print_info(void) -{ - unsigned long bytes = io_tlb_nslabs << IO_TLB_SHIFT; - unsigned char *vstart, *vend; - - if (no_iotlb_memory) { - pr_warn("software IO TLB: No low mem\n"); - return; - } - - vstart = phys_to_virt(io_tlb_start); - vend = phys_to_virt(io_tlb_end); - - printk(KERN_INFO "software IO TLB [mem %#010llx-%#010llx] (%luMB) mapped at [%p-%p]\n", - (unsigned long long)io_tlb_start, - (unsigned long long)io_tlb_end, - bytes >> 20, vstart, vend - 1); -} - -/* - * Early SWIOTLB allocation may be too early to allow an architecture to - * perform the desired operations. This function allows the architecture to - * call SWIOTLB when the operations are possible. It needs to be called - * before the SWIOTLB memory is used. - */ -void __init swiotlb_update_mem_attributes(void) -{ - void *vaddr; - unsigned long bytes; - - if (no_iotlb_memory || late_alloc) - return; - - vaddr = phys_to_virt(io_tlb_start); - bytes = PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT); - set_memory_decrypted((unsigned long)vaddr, bytes >> PAGE_SHIFT); - memset(vaddr, 0, bytes); - - vaddr = phys_to_virt(io_tlb_overflow_buffer); - bytes = PAGE_ALIGN(io_tlb_overflow); - set_memory_decrypted((unsigned long)vaddr, bytes >> PAGE_SHIFT); - memset(vaddr, 0, bytes); -} - -int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose) -{ - void *v_overflow_buffer; - unsigned long i, bytes; - - bytes = nslabs << IO_TLB_SHIFT; - - io_tlb_nslabs = nslabs; - io_tlb_start = __pa(tlb); - io_tlb_end = io_tlb_start + bytes; - - /* - * Get the overflow emergency buffer - */ - v_overflow_buffer = memblock_virt_alloc_low_nopanic( - PAGE_ALIGN(io_tlb_overflow), - PAGE_SIZE); - if (!v_overflow_buffer) - return -ENOMEM; - - io_tlb_overflow_buffer = __pa(v_overflow_buffer); - - /* - * Allocate and initialize the free list array. This array is used - * to find contiguous free memory regions of size up to IO_TLB_SEGSIZE - * between io_tlb_start and io_tlb_end. - */ - io_tlb_list = memblock_virt_alloc( - PAGE_ALIGN(io_tlb_nslabs * sizeof(int)), - PAGE_SIZE); - io_tlb_orig_addr = memblock_virt_alloc( - PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t)), - PAGE_SIZE); - for (i = 0; i < io_tlb_nslabs; i++) { - io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE); - io_tlb_orig_addr[i] = INVALID_PHYS_ADDR; - } - io_tlb_index = 0; - - if (verbose) - swiotlb_print_info(); - - swiotlb_set_max_segment(io_tlb_nslabs << IO_TLB_SHIFT); - return 0; -} - -/* - * Statically reserve bounce buffer space and initialize bounce buffer data - * structures for the software IO TLB used to implement the DMA API. - */ -void __init -swiotlb_init(int verbose) -{ - size_t default_size = IO_TLB_DEFAULT_SIZE; - unsigned char *vstart; - unsigned long bytes; - - if (!io_tlb_nslabs) { - io_tlb_nslabs = (default_size >> IO_TLB_SHIFT); - io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE); - } - - bytes = io_tlb_nslabs << IO_TLB_SHIFT; - - /* Get IO TLB memory from the low pages */ - vstart = memblock_virt_alloc_low_nopanic(PAGE_ALIGN(bytes), PAGE_SIZE); - if (vstart && !swiotlb_init_with_tbl(vstart, io_tlb_nslabs, verbose)) - return; - - if (io_tlb_start) - memblock_free_early(io_tlb_start, - PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT)); - pr_warn("Cannot allocate SWIOTLB buffer"); - no_iotlb_memory = true; -} - -/* - * Systems with larger DMA zones (those that don't support ISA) can - * initialize the swiotlb later using the slab allocator if needed. - * This should be just like above, but with some error catching. - */ -int -swiotlb_late_init_with_default_size(size_t default_size) -{ - unsigned long bytes, req_nslabs = io_tlb_nslabs; - unsigned char *vstart = NULL; - unsigned int order; - int rc = 0; - - if (!io_tlb_nslabs) { - io_tlb_nslabs = (default_size >> IO_TLB_SHIFT); - io_tlb_nslabs = ALIGN(io_tlb_nslabs, IO_TLB_SEGSIZE); - } - - /* - * Get IO TLB memory from the low pages - */ - order = get_order(io_tlb_nslabs << IO_TLB_SHIFT); - io_tlb_nslabs = SLABS_PER_PAGE << order; - bytes = io_tlb_nslabs << IO_TLB_SHIFT; - - while ((SLABS_PER_PAGE << order) > IO_TLB_MIN_SLABS) { - vstart = (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, - order); - if (vstart) - break; - order--; - } - - if (!vstart) { - io_tlb_nslabs = req_nslabs; - return -ENOMEM; - } - if (order != get_order(bytes)) { - printk(KERN_WARNING "Warning: only able to allocate %ld MB " - "for software IO TLB\n", (PAGE_SIZE << order) >> 20); - io_tlb_nslabs = SLABS_PER_PAGE << order; - } - rc = swiotlb_late_init_with_tbl(vstart, io_tlb_nslabs); - if (rc) - free_pages((unsigned long)vstart, order); - - return rc; -} - -int -swiotlb_late_init_with_tbl(char *tlb, unsigned long nslabs) -{ - unsigned long i, bytes; - unsigned char *v_overflow_buffer; - - bytes = nslabs << IO_TLB_SHIFT; - - io_tlb_nslabs = nslabs; - io_tlb_start = virt_to_phys(tlb); - io_tlb_end = io_tlb_start + bytes; - - set_memory_decrypted((unsigned long)tlb, bytes >> PAGE_SHIFT); - memset(tlb, 0, bytes); - - /* - * Get the overflow emergency buffer - */ - v_overflow_buffer = (void *)__get_free_pages(GFP_DMA, - get_order(io_tlb_overflow)); - if (!v_overflow_buffer) - goto cleanup2; - - set_memory_decrypted((unsigned long)v_overflow_buffer, - io_tlb_overflow >> PAGE_SHIFT); - memset(v_overflow_buffer, 0, io_tlb_overflow); - io_tlb_overflow_buffer = virt_to_phys(v_overflow_buffer); - - /* - * Allocate and initialize the free list array. This array is used - * to find contiguous free memory regions of size up to IO_TLB_SEGSIZE - * between io_tlb_start and io_tlb_end. - */ - io_tlb_list = (unsigned int *)__get_free_pages(GFP_KERNEL, - get_order(io_tlb_nslabs * sizeof(int))); - if (!io_tlb_list) - goto cleanup3; - - io_tlb_orig_addr = (phys_addr_t *) - __get_free_pages(GFP_KERNEL, - get_order(io_tlb_nslabs * - sizeof(phys_addr_t))); - if (!io_tlb_orig_addr) - goto cleanup4; - - for (i = 0; i < io_tlb_nslabs; i++) { - io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE); - io_tlb_orig_addr[i] = INVALID_PHYS_ADDR; - } - io_tlb_index = 0; - - swiotlb_print_info(); - - late_alloc = 1; - - swiotlb_set_max_segment(io_tlb_nslabs << IO_TLB_SHIFT); - - return 0; - -cleanup4: - free_pages((unsigned long)io_tlb_list, get_order(io_tlb_nslabs * - sizeof(int))); - io_tlb_list = NULL; -cleanup3: - free_pages((unsigned long)v_overflow_buffer, - get_order(io_tlb_overflow)); - io_tlb_overflow_buffer = 0; -cleanup2: - io_tlb_end = 0; - io_tlb_start = 0; - io_tlb_nslabs = 0; - max_segment = 0; - return -ENOMEM; -} - -void __init swiotlb_exit(void) -{ - if (!io_tlb_orig_addr) - return; - - if (late_alloc) { - free_pages((unsigned long)phys_to_virt(io_tlb_overflow_buffer), - get_order(io_tlb_overflow)); - free_pages((unsigned long)io_tlb_orig_addr, - get_order(io_tlb_nslabs * sizeof(phys_addr_t))); - free_pages((unsigned long)io_tlb_list, get_order(io_tlb_nslabs * - sizeof(int))); - free_pages((unsigned long)phys_to_virt(io_tlb_start), - get_order(io_tlb_nslabs << IO_TLB_SHIFT)); - } else { - memblock_free_late(io_tlb_overflow_buffer, - PAGE_ALIGN(io_tlb_overflow)); - memblock_free_late(__pa(io_tlb_orig_addr), - PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t))); - memblock_free_late(__pa(io_tlb_list), - PAGE_ALIGN(io_tlb_nslabs * sizeof(int))); - memblock_free_late(io_tlb_start, - PAGE_ALIGN(io_tlb_nslabs << IO_TLB_SHIFT)); - } - io_tlb_nslabs = 0; - max_segment = 0; -} - -int is_swiotlb_buffer(phys_addr_t paddr) -{ - return paddr >= io_tlb_start && paddr < io_tlb_end; -} - -/* - * Bounce: copy the swiotlb buffer back to the original dma location - */ -static void swiotlb_bounce(phys_addr_t orig_addr, phys_addr_t tlb_addr, - size_t size, enum dma_data_direction dir) -{ - unsigned long pfn = PFN_DOWN(orig_addr); - unsigned char *vaddr = phys_to_virt(tlb_addr); - - if (PageHighMem(pfn_to_page(pfn))) { - /* The buffer does not have a mapping. Map it in and copy */ - unsigned int offset = orig_addr & ~PAGE_MASK; - char *buffer; - unsigned int sz = 0; - unsigned long flags; - - while (size) { - sz = min_t(size_t, PAGE_SIZE - offset, size); - - local_irq_save(flags); - buffer = kmap_atomic(pfn_to_page(pfn)); - if (dir == DMA_TO_DEVICE) - memcpy(vaddr, buffer + offset, sz); - else - memcpy(buffer + offset, vaddr, sz); - kunmap_atomic(buffer); - local_irq_restore(flags); - - size -= sz; - pfn++; - vaddr += sz; - offset = 0; - } - } else if (dir == DMA_TO_DEVICE) { - memcpy(vaddr, phys_to_virt(orig_addr), size); - } else { - memcpy(phys_to_virt(orig_addr), vaddr, size); - } -} - -phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, - dma_addr_t tbl_dma_addr, - phys_addr_t orig_addr, size_t size, - enum dma_data_direction dir, - unsigned long attrs) -{ - unsigned long flags; - phys_addr_t tlb_addr; - unsigned int nslots, stride, index, wrap; - int i; - unsigned long mask; - unsigned long offset_slots; - unsigned long max_slots; - - if (no_iotlb_memory) - panic("Can not allocate SWIOTLB buffer earlier and can't now provide you with the DMA bounce buffer"); - - if (mem_encrypt_active()) - pr_warn_once("%s is active and system is using DMA bounce buffers\n", - sme_active() ? "SME" : "SEV"); - - mask = dma_get_seg_boundary(hwdev); - - tbl_dma_addr &= mask; - - offset_slots = ALIGN(tbl_dma_addr, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; - - /* - * Carefully handle integer overflow which can occur when mask == ~0UL. - */ - max_slots = mask + 1 - ? ALIGN(mask + 1, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT - : 1UL << (BITS_PER_LONG - IO_TLB_SHIFT); - - /* - * For mappings greater than or equal to a page, we limit the stride - * (and hence alignment) to a page size. - */ - nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; - if (size >= PAGE_SIZE) - stride = (1 << (PAGE_SHIFT - IO_TLB_SHIFT)); - else - stride = 1; - - BUG_ON(!nslots); - - /* - * Find suitable number of IO TLB entries size that will fit this - * request and allocate a buffer from that IO TLB pool. - */ - spin_lock_irqsave(&io_tlb_lock, flags); - index = ALIGN(io_tlb_index, stride); - if (index >= io_tlb_nslabs) - index = 0; - wrap = index; - - do { - while (iommu_is_span_boundary(index, nslots, offset_slots, - max_slots)) { - index += stride; - if (index >= io_tlb_nslabs) - index = 0; - if (index == wrap) - goto not_found; - } - - /* - * If we find a slot that indicates we have 'nslots' number of - * contiguous buffers, we allocate the buffers from that slot - * and mark the entries as '0' indicating unavailable. - */ - if (io_tlb_list[index] >= nslots) { - int count = 0; - - for (i = index; i < (int) (index + nslots); i++) - io_tlb_list[i] = 0; - for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE - 1) && io_tlb_list[i]; i--) - io_tlb_list[i] = ++count; - tlb_addr = io_tlb_start + (index << IO_TLB_SHIFT); - - /* - * Update the indices to avoid searching in the next - * round. - */ - io_tlb_index = ((index + nslots) < io_tlb_nslabs - ? (index + nslots) : 0); - - goto found; - } - index += stride; - if (index >= io_tlb_nslabs) - index = 0; - } while (index != wrap); - -not_found: - spin_unlock_irqrestore(&io_tlb_lock, flags); - if (!(attrs & DMA_ATTR_NO_WARN) && printk_ratelimit()) - dev_warn(hwdev, "swiotlb buffer is full (sz: %zd bytes)\n", size); - return SWIOTLB_MAP_ERROR; -found: - spin_unlock_irqrestore(&io_tlb_lock, flags); - - /* - * Save away the mapping from the original address to the DMA address. - * This is needed when we sync the memory. Then we sync the buffer if - * needed. - */ - for (i = 0; i < nslots; i++) - io_tlb_orig_addr[index+i] = orig_addr + (i << IO_TLB_SHIFT); - if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) && - (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)) - swiotlb_bounce(orig_addr, tlb_addr, size, DMA_TO_DEVICE); - - return tlb_addr; -} - -/* - * Allocates bounce buffer and returns its physical address. - */ -static phys_addr_t -map_single(struct device *hwdev, phys_addr_t phys, size_t size, - enum dma_data_direction dir, unsigned long attrs) -{ - dma_addr_t start_dma_addr; - - if (swiotlb_force == SWIOTLB_NO_FORCE) { - dev_warn_ratelimited(hwdev, "Cannot do DMA to address %pa\n", - &phys); - return SWIOTLB_MAP_ERROR; - } - - start_dma_addr = __phys_to_dma(hwdev, io_tlb_start); - return swiotlb_tbl_map_single(hwdev, start_dma_addr, phys, size, - dir, attrs); -} - -/* - * tlb_addr is the physical address of the bounce buffer to unmap. - */ -void swiotlb_tbl_unmap_single(struct device *hwdev, phys_addr_t tlb_addr, - size_t size, enum dma_data_direction dir, - unsigned long attrs) -{ - unsigned long flags; - int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT; - int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT; - phys_addr_t orig_addr = io_tlb_orig_addr[index]; - - /* - * First, sync the memory before unmapping the entry - */ - if (orig_addr != INVALID_PHYS_ADDR && - !(attrs & DMA_ATTR_SKIP_CPU_SYNC) && - ((dir == DMA_FROM_DEVICE) || (dir == DMA_BIDIRECTIONAL))) - swiotlb_bounce(orig_addr, tlb_addr, size, DMA_FROM_DEVICE); - - /* - * Return the buffer to the free list by setting the corresponding - * entries to indicate the number of contiguous entries available. - * While returning the entries to the free list, we merge the entries - * with slots below and above the pool being returned. - */ - spin_lock_irqsave(&io_tlb_lock, flags); - { - count = ((index + nslots) < ALIGN(index + 1, IO_TLB_SEGSIZE) ? - io_tlb_list[index + nslots] : 0); - /* - * Step 1: return the slots to the free list, merging the - * slots with superceeding slots - */ - for (i = index + nslots - 1; i >= index; i--) { - io_tlb_list[i] = ++count; - io_tlb_orig_addr[i] = INVALID_PHYS_ADDR; - } - /* - * Step 2: merge the returned slots with the preceding slots, - * if available (non zero) - */ - for (i = index - 1; (OFFSET(i, IO_TLB_SEGSIZE) != IO_TLB_SEGSIZE -1) && io_tlb_list[i]; i--) - io_tlb_list[i] = ++count; - } - spin_unlock_irqrestore(&io_tlb_lock, flags); -} - -void swiotlb_tbl_sync_single(struct device *hwdev, phys_addr_t tlb_addr, - size_t size, enum dma_data_direction dir, - enum dma_sync_target target) -{ - int index = (tlb_addr - io_tlb_start) >> IO_TLB_SHIFT; - phys_addr_t orig_addr = io_tlb_orig_addr[index]; - - if (orig_addr == INVALID_PHYS_ADDR) - return; - orig_addr += (unsigned long)tlb_addr & ((1 << IO_TLB_SHIFT) - 1); - - switch (target) { - case SYNC_FOR_CPU: - if (likely(dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL)) - swiotlb_bounce(orig_addr, tlb_addr, - size, DMA_FROM_DEVICE); - else - BUG_ON(dir != DMA_TO_DEVICE); - break; - case SYNC_FOR_DEVICE: - if (likely(dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)) - swiotlb_bounce(orig_addr, tlb_addr, - size, DMA_TO_DEVICE); - else - BUG_ON(dir != DMA_FROM_DEVICE); - break; - default: - BUG(); - } -} - -static inline bool dma_coherent_ok(struct device *dev, dma_addr_t addr, - size_t size) -{ - u64 mask = DMA_BIT_MASK(32); - - if (dev && dev->coherent_dma_mask) - mask = dev->coherent_dma_mask; - return addr + size - 1 <= mask; -} - -static void * -swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle, - unsigned long attrs) -{ - phys_addr_t phys_addr; - - if (swiotlb_force == SWIOTLB_NO_FORCE) - goto out_warn; - - phys_addr = swiotlb_tbl_map_single(dev, - __phys_to_dma(dev, io_tlb_start), - 0, size, DMA_FROM_DEVICE, attrs); - if (phys_addr == SWIOTLB_MAP_ERROR) - goto out_warn; - - *dma_handle = __phys_to_dma(dev, phys_addr); - if (!dma_coherent_ok(dev, *dma_handle, size)) - goto out_unmap; - - memset(phys_to_virt(phys_addr), 0, size); - return phys_to_virt(phys_addr); - -out_unmap: - dev_warn(dev, "hwdev DMA mask = 0x%016Lx, dev_addr = 0x%016Lx\n", - (unsigned long long)dev->coherent_dma_mask, - (unsigned long long)*dma_handle); - - /* - * DMA_TO_DEVICE to avoid memcpy in unmap_single. - * DMA_ATTR_SKIP_CPU_SYNC is optional. - */ - swiotlb_tbl_unmap_single(dev, phys_addr, size, DMA_TO_DEVICE, - DMA_ATTR_SKIP_CPU_SYNC); -out_warn: - if (!(attrs & DMA_ATTR_NO_WARN) && printk_ratelimit()) { - dev_warn(dev, - "swiotlb: coherent allocation failed, size=%zu\n", - size); - dump_stack(); - } - return NULL; -} - -static bool swiotlb_free_buffer(struct device *dev, size_t size, - dma_addr_t dma_addr) -{ - phys_addr_t phys_addr = dma_to_phys(dev, dma_addr); - - WARN_ON_ONCE(irqs_disabled()); - - if (!is_swiotlb_buffer(phys_addr)) - return false; - - /* - * DMA_TO_DEVICE to avoid memcpy in swiotlb_tbl_unmap_single. - * DMA_ATTR_SKIP_CPU_SYNC is optional. - */ - swiotlb_tbl_unmap_single(dev, phys_addr, size, DMA_TO_DEVICE, - DMA_ATTR_SKIP_CPU_SYNC); - return true; -} - -static void -swiotlb_full(struct device *dev, size_t size, enum dma_data_direction dir, - int do_panic) -{ - if (swiotlb_force == SWIOTLB_NO_FORCE) - return; - - /* - * Ran out of IOMMU space for this operation. This is very bad. - * Unfortunately the drivers cannot handle this operation properly. - * unless they check for dma_mapping_error (most don't) - * When the mapping is small enough return a static buffer to limit - * the damage, or panic when the transfer is too big. - */ - dev_err_ratelimited(dev, "DMA: Out of SW-IOMMU space for %zu bytes\n", - size); - - if (size <= io_tlb_overflow || !do_panic) - return; - - if (dir == DMA_BIDIRECTIONAL) - panic("DMA: Random memory could be DMA accessed\n"); - if (dir == DMA_FROM_DEVICE) - panic("DMA: Random memory could be DMA written\n"); - if (dir == DMA_TO_DEVICE) - panic("DMA: Random memory could be DMA read\n"); -} - -/* - * Map a single buffer of the indicated size for DMA in streaming mode. The - * physical address to use is returned. - * - * Once the device is given the dma address, the device owns this memory until - * either swiotlb_unmap_page or swiotlb_dma_sync_single is performed. - */ -dma_addr_t swiotlb_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir, - unsigned long attrs) -{ - phys_addr_t map, phys = page_to_phys(page) + offset; - dma_addr_t dev_addr = phys_to_dma(dev, phys); - - BUG_ON(dir == DMA_NONE); - /* - * If the address happens to be in the device's DMA window, - * we can safely return the device addr and not worry about bounce - * buffering it. - */ - if (dma_capable(dev, dev_addr, size) && swiotlb_force != SWIOTLB_FORCE) - return dev_addr; - - trace_swiotlb_bounced(dev, dev_addr, size, swiotlb_force); - - /* Oh well, have to allocate and map a bounce buffer. */ - map = map_single(dev, phys, size, dir, attrs); - if (map == SWIOTLB_MAP_ERROR) { - swiotlb_full(dev, size, dir, 1); - return __phys_to_dma(dev, io_tlb_overflow_buffer); - } - - dev_addr = __phys_to_dma(dev, map); - - /* Ensure that the address returned is DMA'ble */ - if (dma_capable(dev, dev_addr, size)) - return dev_addr; - - attrs |= DMA_ATTR_SKIP_CPU_SYNC; - swiotlb_tbl_unmap_single(dev, map, size, dir, attrs); - - return __phys_to_dma(dev, io_tlb_overflow_buffer); -} - -/* - * Unmap a single streaming mode DMA translation. The dma_addr and size must - * match what was provided for in a previous swiotlb_map_page call. All - * other usages are undefined. - * - * After this call, reads by the cpu to the buffer are guaranteed to see - * whatever the device wrote there. - */ -static void unmap_single(struct device *hwdev, dma_addr_t dev_addr, - size_t size, enum dma_data_direction dir, - unsigned long attrs) -{ - phys_addr_t paddr = dma_to_phys(hwdev, dev_addr); - - BUG_ON(dir == DMA_NONE); - - if (is_swiotlb_buffer(paddr)) { - swiotlb_tbl_unmap_single(hwdev, paddr, size, dir, attrs); - return; - } - - if (dir != DMA_FROM_DEVICE) - return; - - /* - * phys_to_virt doesn't work with hihgmem page but we could - * call dma_mark_clean() with hihgmem page here. However, we - * are fine since dma_mark_clean() is null on POWERPC. We can - * make dma_mark_clean() take a physical address if necessary. - */ - dma_mark_clean(phys_to_virt(paddr), size); -} - -void swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr, - size_t size, enum dma_data_direction dir, - unsigned long attrs) -{ - unmap_single(hwdev, dev_addr, size, dir, attrs); -} - -/* - * Make physical memory consistent for a single streaming mode DMA translation - * after a transfer. - * - * If you perform a swiotlb_map_page() but wish to interrogate the buffer - * using the cpu, yet do not wish to teardown the dma mapping, you must - * call this function before doing so. At the next point you give the dma - * address back to the card, you must first perform a - * swiotlb_dma_sync_for_device, and then the device again owns the buffer - */ -static void -swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr, - size_t size, enum dma_data_direction dir, - enum dma_sync_target target) -{ - phys_addr_t paddr = dma_to_phys(hwdev, dev_addr); - - BUG_ON(dir == DMA_NONE); - - if (is_swiotlb_buffer(paddr)) { - swiotlb_tbl_sync_single(hwdev, paddr, size, dir, target); - return; - } - - if (dir != DMA_FROM_DEVICE) - return; - - dma_mark_clean(phys_to_virt(paddr), size); -} - -void -swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr, - size_t size, enum dma_data_direction dir) -{ - swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_CPU); -} - -void -swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr, - size_t size, enum dma_data_direction dir) -{ - swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_DEVICE); -} - -/* - * Map a set of buffers described by scatterlist in streaming mode for DMA. - * This is the scatter-gather version of the above swiotlb_map_page - * interface. Here the scatter gather list elements are each tagged with the - * appropriate dma address and length. They are obtained via - * sg_dma_{address,length}(SG). - * - * NOTE: An implementation may be able to use a smaller number of - * DMA address/length pairs than there are SG table elements. - * (for example via virtual mapping capabilities) - * The routine returns the number of addr/length pairs actually - * used, at most nents. - * - * Device ownership issues as mentioned above for swiotlb_map_page are the - * same here. - */ -int -swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems, - enum dma_data_direction dir, unsigned long attrs) -{ - struct scatterlist *sg; - int i; - - BUG_ON(dir == DMA_NONE); - - for_each_sg(sgl, sg, nelems, i) { - phys_addr_t paddr = sg_phys(sg); - dma_addr_t dev_addr = phys_to_dma(hwdev, paddr); - - if (swiotlb_force == SWIOTLB_FORCE || - !dma_capable(hwdev, dev_addr, sg->length)) { - phys_addr_t map = map_single(hwdev, sg_phys(sg), - sg->length, dir, attrs); - if (map == SWIOTLB_MAP_ERROR) { - /* Don't panic here, we expect map_sg users - to do proper error handling. */ - swiotlb_full(hwdev, sg->length, dir, 0); - attrs |= DMA_ATTR_SKIP_CPU_SYNC; - swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir, - attrs); - sg_dma_len(sgl) = 0; - return 0; - } - sg->dma_address = __phys_to_dma(hwdev, map); - } else - sg->dma_address = dev_addr; - sg_dma_len(sg) = sg->length; - } - return nelems; -} - -/* - * Unmap a set of streaming mode DMA translations. Again, cpu read rules - * concerning calls here are the same as for swiotlb_unmap_page() above. - */ -void -swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl, - int nelems, enum dma_data_direction dir, - unsigned long attrs) -{ - struct scatterlist *sg; - int i; - - BUG_ON(dir == DMA_NONE); - - for_each_sg(sgl, sg, nelems, i) - unmap_single(hwdev, sg->dma_address, sg_dma_len(sg), dir, - attrs); -} - -/* - * Make physical memory consistent for a set of streaming mode DMA translations - * after a transfer. - * - * The same as swiotlb_sync_single_* but for a scatter-gather list, same rules - * and usage. - */ -static void -swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sgl, - int nelems, enum dma_data_direction dir, - enum dma_sync_target target) -{ - struct scatterlist *sg; - int i; - - for_each_sg(sgl, sg, nelems, i) - swiotlb_sync_single(hwdev, sg->dma_address, - sg_dma_len(sg), dir, target); -} - -void -swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg, - int nelems, enum dma_data_direction dir) -{ - swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_CPU); -} - -void -swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg, - int nelems, enum dma_data_direction dir) -{ - swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_DEVICE); -} - -int -swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr) -{ - return (dma_addr == __phys_to_dma(hwdev, io_tlb_overflow_buffer)); -} - -/* - * Return whether the given device DMA address mask can be supported - * properly. For example, if your device can only drive the low 24-bits - * during bus mastering, then you would pass 0x00ffffff as the mask to - * this function. - */ -int -swiotlb_dma_supported(struct device *hwdev, u64 mask) -{ - return __phys_to_dma(hwdev, io_tlb_end - 1) <= mask; -} - -void *swiotlb_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t gfp, unsigned long attrs) -{ - void *vaddr; - - /* temporary workaround: */ - if (gfp & __GFP_NOWARN) - attrs |= DMA_ATTR_NO_WARN; - - /* - * Don't print a warning when the first allocation attempt fails. - * swiotlb_alloc_coherent() will print a warning when the DMA memory - * allocation ultimately failed. - */ - gfp |= __GFP_NOWARN; - - vaddr = dma_direct_alloc(dev, size, dma_handle, gfp, attrs); - if (!vaddr) - vaddr = swiotlb_alloc_buffer(dev, size, dma_handle, attrs); - return vaddr; -} - -void swiotlb_free(struct device *dev, size_t size, void *vaddr, - dma_addr_t dma_addr, unsigned long attrs) -{ - if (!swiotlb_free_buffer(dev, size, dma_addr)) - dma_direct_free(dev, size, vaddr, dma_addr, attrs); -} - -const struct dma_map_ops swiotlb_dma_ops = { - .mapping_error = swiotlb_dma_mapping_error, - .alloc = swiotlb_alloc, - .free = swiotlb_free, - .sync_single_for_cpu = swiotlb_sync_single_for_cpu, - .sync_single_for_device = swiotlb_sync_single_for_device, - .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu, - .sync_sg_for_device = swiotlb_sync_sg_for_device, - .map_sg = swiotlb_map_sg_attrs, - .unmap_sg = swiotlb_unmap_sg_attrs, - .map_page = swiotlb_map_page, - .unmap_page = swiotlb_unmap_page, - .dma_supported = dma_direct_supported, -}; -- cgit v1.2.3 From f1b4bd0676c2b3d4a023cf3f5d535e618f7e6eff Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Thu, 14 Jun 2018 15:27:48 -0700 Subject: fault-injection: reorder config entries Reorder Kconfig entries, so that menuconfig displays proper indentation. Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1804251601160.30569@file01.intranet.prod.int.rdu2.redhat.com Signed-off-by: Mikulas Patocka Acked-by: Randy Dunlap Tested-by: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/Kconfig.debug | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) (limited to 'lib') diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index d543c65ce0eb..8838d1158d19 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1506,6 +1506,10 @@ config NETDEV_NOTIFIER_ERROR_INJECT If unsure, say N. +config FUNCTION_ERROR_INJECTION + def_bool y + depends on HAVE_FUNCTION_ERROR_INJECTION && KPROBES + config FAULT_INJECTION bool "Fault-injection framework" depends on DEBUG_KERNEL @@ -1513,10 +1517,6 @@ config FAULT_INJECTION Provide fault-injection framework. For more details, see Documentation/fault-injection/. -config FUNCTION_ERROR_INJECTION - def_bool y - depends on HAVE_FUNCTION_ERROR_INJECTION && KPROBES - config FAILSLAB bool "Fault-injection capability for kmalloc" depends on FAULT_INJECTION @@ -1547,16 +1547,6 @@ config FAIL_IO_TIMEOUT Only works with drivers that use the generic timeout handling, for others it wont do anything. -config FAIL_MMC_REQUEST - bool "Fault-injection capability for MMC IO" - depends on FAULT_INJECTION_DEBUG_FS && MMC - help - Provide fault-injection capability for MMC IO. - This will make the mmc core return data errors. This is - useful to test the error handling in the mmc block device - and to test how the mmc host driver handles retries from - the block device. - config FAIL_FUTEX bool "Fault-injection capability for futexes" select DEBUG_FS @@ -1564,6 +1554,12 @@ config FAIL_FUTEX help Provide fault-injection capability for futexes. +config FAULT_INJECTION_DEBUG_FS + bool "Debugfs entries for fault-injection capabilities" + depends on FAULT_INJECTION && SYSFS && DEBUG_FS + help + Enable configuration of fault-injection capabilities via debugfs. + config FAIL_FUNCTION bool "Fault-injection capability for functions" depends on FAULT_INJECTION_DEBUG_FS && FUNCTION_ERROR_INJECTION @@ -1574,11 +1570,15 @@ config FAIL_FUNCTION an error value and have to handle it. This is useful to test the error handling in various subsystems. -config FAULT_INJECTION_DEBUG_FS - bool "Debugfs entries for fault-injection capabilities" - depends on FAULT_INJECTION && SYSFS && DEBUG_FS +config FAIL_MMC_REQUEST + bool "Fault-injection capability for MMC IO" + depends on FAULT_INJECTION_DEBUG_FS && MMC help - Enable configuration of fault-injection capabilities via debugfs. + Provide fault-injection capability for MMC IO. + This will make the mmc core return data errors. This is + useful to test the error handling in the mmc block device + and to test how the mmc host driver handles retries from + the block device. config FAULT_INJECTION_STACKTRACE_FILTER bool "stacktrace filter for fault-injection capabilities" -- cgit v1.2.3 From ee410f15b1418f2f4428e79980674c979081bcb7 Mon Sep 17 00:00:00 2001 From: Thierry Escande Date: Thu, 14 Jun 2018 15:28:15 -0700 Subject: lib/test_printf.c: call wait_for_random_bytes() before plain %p tests If the test_printf module is loaded before the crng is initialized, the plain 'p' tests will fail because the printed address will not be hashed and the buffer will contain '(ptrval)' instead. This patch adds a call to wait_for_random_bytes() before plain 'p' tests to make sure the crng is initialized. Link: http://lkml.kernel.org/r/20180604113708.11554-1-thierry.escande@linaro.org Signed-off-by: Thierry Escande Acked-by: Tobin C. Harding Reviewed-by: Andrew Morton Cc: David Miller Cc: Rasmus Villemoes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/test_printf.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'lib') diff --git a/lib/test_printf.c b/lib/test_printf.c index cea592f402ed..b2aa8f514844 100644 --- a/lib/test_printf.c +++ b/lib/test_printf.c @@ -260,6 +260,13 @@ plain(void) { int err; + /* + * Make sure crng is ready. Otherwise we get "(ptrval)" instead + * of a hashed address when printing '%p' in plain_hash() and + * plain_format(). + */ + wait_for_random_bytes(); + err = plain_hash(); if (err) { pr_warn("plain 'p' does not appear to be hashed\n"); -- cgit v1.2.3 From 5fb94e9ca333f0fe1d96de06704a79942b3832c3 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 8 May 2018 15:14:57 -0300 Subject: docs: Fix some broken references As we move stuff around, some doc references are broken. Fix some of them via this script: ./scripts/documentation-file-ref-check --fix Manually checked if the produced result is valid, removing a few false-positives. Acked-by: Takashi Iwai Acked-by: Masami Hiramatsu Acked-by: Stephen Boyd Acked-by: Charles Keepax Acked-by: Mathieu Poirier Reviewed-by: Coly Li Signed-off-by: Mauro Carvalho Chehab Acked-by: Jonathan Corbet --- Documentation/admin-guide/kernel-parameters.txt | 4 ++-- .../devicetree/bindings/input/rotary-encoder.txt | 2 +- Documentation/driver-api/gpio/consumer.rst | 2 +- Documentation/kprobes.txt | 4 ++-- Documentation/trace/coresight.txt | 2 +- Documentation/trace/ftrace-uses.rst | 2 +- Documentation/trace/histogram.txt | 2 +- Documentation/trace/intel_th.rst | 2 +- Documentation/trace/tracepoint-analysis.rst | 6 +++--- Documentation/translations/ja_JP/howto.rst | 4 ++-- Documentation/translations/zh_CN/magic-number.txt | 4 ++-- .../translations/zh_CN/video4linux/omap3isp.txt | 4 ++-- MAINTAINERS | 20 ++++++++++---------- arch/Kconfig | 2 +- arch/arm/include/asm/cacheflush.h | 2 +- arch/arm64/include/asm/cacheflush.h | 2 +- arch/microblaze/include/asm/cacheflush.h | 2 +- arch/um/Kconfig.um | 2 +- arch/unicore32/include/asm/cacheflush.h | 2 +- arch/x86/entry/vsyscall/vsyscall_64.c | 2 +- arch/xtensa/include/asm/cacheflush.h | 4 ++-- block/Kconfig | 2 +- certs/Kconfig | 2 +- crypto/asymmetric_keys/asymmetric_type.c | 2 +- crypto/asymmetric_keys/signature.c | 2 +- drivers/char/Kconfig | 2 +- drivers/clk/clk.c | 4 ++-- drivers/clk/ingenic/cgu.h | 2 +- drivers/gpu/vga/Kconfig | 2 +- drivers/gpu/vga/vgaarb.c | 2 +- drivers/input/joystick/Kconfig | 10 +++++----- drivers/input/joystick/walkera0701.c | 2 +- drivers/input/misc/Kconfig | 4 ++-- drivers/input/misc/rotary_encoder.c | 2 +- drivers/input/mouse/Kconfig | 6 +++--- drivers/input/mouse/alps.c | 2 +- drivers/input/touchscreen/wm97xx-core.c | 2 +- drivers/lightnvm/pblk-rb.c | 2 +- drivers/md/bcache/Kconfig | 2 +- drivers/md/bcache/btree.c | 2 +- drivers/md/bcache/extents.c | 2 +- drivers/media/dvb-core/dvb_ringbuffer.c | 2 +- drivers/media/pci/meye/Kconfig | 2 +- drivers/media/platform/pxa_camera.c | 4 ++-- .../media/platform/soc_camera/sh_mobile_ceu_camera.c | 2 +- drivers/media/radio/Kconfig | 2 +- drivers/media/radio/si470x/Kconfig | 2 +- drivers/media/usb/dvb-usb-v2/lmedm04.c | 2 +- drivers/media/usb/zr364xx/Kconfig | 2 +- drivers/parport/Kconfig | 6 +++--- drivers/staging/media/bcm2048/TODO | 2 +- include/keys/asymmetric-subtype.h | 2 +- include/keys/asymmetric-type.h | 2 +- include/linux/assoc_array.h | 2 +- include/linux/assoc_array_priv.h | 2 +- include/linux/circ_buf.h | 2 +- include/linux/ftrace.h | 2 +- include/linux/rculist_nulls.h | 2 +- include/uapi/linux/prctl.h | 2 +- include/xen/interface/io/kbdif.h | 2 +- kernel/cgroup/cpuset.c | 2 +- kernel/trace/Kconfig | 16 ++++++++-------- lib/Kconfig | 2 +- security/selinux/hooks.c | 2 +- sound/core/Kconfig | 4 ++-- sound/drivers/Kconfig | 4 ++-- sound/pci/Kconfig | 10 +++++----- tools/include/uapi/linux/prctl.h | 2 +- tools/lib/api/fs/fs.c | 2 +- tools/perf/util/bpf-prologue.c | 2 +- .../pm-graph/config/custom-timeline-functions.cfg | 4 ++-- 71 files changed, 113 insertions(+), 113 deletions(-) (limited to 'lib') diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 638342d0a095..6fa3f31ed2a5 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4335,7 +4335,7 @@ [FTRACE] Set and start specified trace events in order to facilitate early boot debugging. The event-list is a comma separated list of trace events to enable. See - also Documentation/trace/events.txt + also Documentation/trace/events.rst trace_options=[option-list] [FTRACE] Enable or disable tracer options at boot. @@ -4350,7 +4350,7 @@ trace_options=stacktrace - See also Documentation/trace/ftrace.txt "trace options" + See also Documentation/trace/ftrace.rst "trace options" section. tp_printk[FTRACE] diff --git a/Documentation/devicetree/bindings/input/rotary-encoder.txt b/Documentation/devicetree/bindings/input/rotary-encoder.txt index f99fe5cdeaec..a644408b33b8 100644 --- a/Documentation/devicetree/bindings/input/rotary-encoder.txt +++ b/Documentation/devicetree/bindings/input/rotary-encoder.txt @@ -28,7 +28,7 @@ Deprecated properties: This property is deprecated. Instead, a 'steps-per-period ' value should be used, such as "rotary-encoder,steps-per-period = <2>". -See Documentation/input/rotary-encoder.txt for more information. +See Documentation/input/devices/rotary-encoder.rst for more information. Example: diff --git a/Documentation/driver-api/gpio/consumer.rst b/Documentation/driver-api/gpio/consumer.rst index c71a50d85b50..aa03f389d41d 100644 --- a/Documentation/driver-api/gpio/consumer.rst +++ b/Documentation/driver-api/gpio/consumer.rst @@ -57,7 +57,7 @@ device that displays digits), an additional index argument can be specified:: enum gpiod_flags flags) For a more detailed description of the con_id parameter in the DeviceTree case -see Documentation/gpio/board.txt +see Documentation/driver-api/gpio/board.rst The flags parameter is used to optionally specify a direction and initial value for the GPIO. Values can be: diff --git a/Documentation/kprobes.txt b/Documentation/kprobes.txt index 22208bf2386d..cb3b0de83fc6 100644 --- a/Documentation/kprobes.txt +++ b/Documentation/kprobes.txt @@ -724,8 +724,8 @@ migrate your tool to one of the following options: See following documents: - - Documentation/trace/kprobetrace.txt - - Documentation/trace/events.txt + - Documentation/trace/kprobetrace.rst + - Documentation/trace/events.rst - tools/perf/Documentation/perf-probe.txt diff --git a/Documentation/trace/coresight.txt b/Documentation/trace/coresight.txt index 1d74ad0202b6..efbc832146e7 100644 --- a/Documentation/trace/coresight.txt +++ b/Documentation/trace/coresight.txt @@ -426,5 +426,5 @@ root@genericarmv8:~# Details on how to use the generic STM API can be found here [2]. [1]. Documentation/ABI/testing/sysfs-bus-coresight-devices-stm -[2]. Documentation/trace/stm.txt +[2]. Documentation/trace/stm.rst [3]. https://github.com/Linaro/perf-opencsd diff --git a/Documentation/trace/ftrace-uses.rst b/Documentation/trace/ftrace-uses.rst index 00283b6dd101..1fbc69894eed 100644 --- a/Documentation/trace/ftrace-uses.rst +++ b/Documentation/trace/ftrace-uses.rst @@ -199,7 +199,7 @@ If @buf is NULL and reset is set, all functions will be enabled for tracing. The @buf can also be a glob expression to enable all functions that match a specific pattern. -See Filter Commands in :file:`Documentation/trace/ftrace.txt`. +See Filter Commands in :file:`Documentation/trace/ftrace.rst`. To just trace the schedule function: diff --git a/Documentation/trace/histogram.txt b/Documentation/trace/histogram.txt index b13771cb12c1..e73bcf9cb5f3 100644 --- a/Documentation/trace/histogram.txt +++ b/Documentation/trace/histogram.txt @@ -7,7 +7,7 @@ Histogram triggers are special event triggers that can be used to aggregate trace event data into histograms. For information on - trace events and event triggers, see Documentation/trace/events.txt. + trace events and event triggers, see Documentation/trace/events.rst. 2. Histogram Trigger Command diff --git a/Documentation/trace/intel_th.rst b/Documentation/trace/intel_th.rst index 990f13265178..19e2d633f3c7 100644 --- a/Documentation/trace/intel_th.rst +++ b/Documentation/trace/intel_th.rst @@ -38,7 +38,7 @@ description is at Documentation/ABI/testing/sysfs-bus-intel_th-devices-gth. STH registers an stm class device, through which it provides interface to userspace and kernelspace software trace sources. See -Documentation/trace/stm.txt for more information on that. +Documentation/trace/stm.rst for more information on that. MSU can be configured to collect trace data into a system memory buffer, which can later on be read from its device nodes via read() or diff --git a/Documentation/trace/tracepoint-analysis.rst b/Documentation/trace/tracepoint-analysis.rst index bef37abf4ad3..716326b9f152 100644 --- a/Documentation/trace/tracepoint-analysis.rst +++ b/Documentation/trace/tracepoint-analysis.rst @@ -55,7 +55,7 @@ simple case of:: 3.1 System-Wide Event Enabling ------------------------------ -See Documentation/trace/events.txt for a proper description on how events +See Documentation/trace/events.rst for a proper description on how events can be enabled system-wide. A short example of enabling all events related to page allocation would look something like:: @@ -112,7 +112,7 @@ at that point. 3.4 Local Event Enabling ------------------------ -Documentation/trace/ftrace.txt describes how to enable events on a per-thread +Documentation/trace/ftrace.rst describes how to enable events on a per-thread basis using set_ftrace_pid. 3.5 Local Event Enablement with PCL @@ -137,7 +137,7 @@ basis using PCL such as follows. 4. Event Filtering ================== -Documentation/trace/ftrace.txt covers in-depth how to filter events in +Documentation/trace/ftrace.rst covers in-depth how to filter events in ftrace. Obviously using grep and awk of trace_pipe is an option as well as any script reading trace_pipe. diff --git a/Documentation/translations/ja_JP/howto.rst b/Documentation/translations/ja_JP/howto.rst index 8d7ed0cbbf5f..f3116381c26b 100644 --- a/Documentation/translations/ja_JP/howto.rst +++ b/Documentation/translations/ja_JP/howto.rst @@ -1,5 +1,5 @@ NOTE: -This is a version of Documentation/HOWTO translated into Japanese. +This is a version of Documentation/process/howto.rst translated into Japanese. This document is maintained by Tsugikazu Shibata If you find any difference between this document and the original file or a problem with the translation, please contact the maintainer of this file. @@ -109,7 +109,7 @@ linux-api@vger.kernel.org に送ることを勧めます。 ています。 カーネルに関して初めての人はここからスタートすると良い でしょう。 - :ref:`Documentation/Process/changes.rst ` + :ref:`Documentation/process/changes.rst ` このファイルはカーネルをうまく生成(訳注 build )し、走らせるのに最 小限のレベルで必要な数々のソフトウェアパッケージの一覧を示してい ます。 diff --git a/Documentation/translations/zh_CN/magic-number.txt b/Documentation/translations/zh_CN/magic-number.txt index e9db693c0a23..7159cec04090 100644 --- a/Documentation/translations/zh_CN/magic-number.txt +++ b/Documentation/translations/zh_CN/magic-number.txt @@ -1,4 +1,4 @@ -Chinese translated version of Documentation/magic-number.txt +Chinese translated version of Documentation/process/magic-number.rst If you have any comment or update to the content, please post to LKML directly. However, if you have problem communicating in English you can also ask the @@ -7,7 +7,7 @@ translation is outdated or there is problem with translation. Chinese maintainer: Jia Wei Wei --------------------------------------------------------------------- -Documentation/magic-number.txt的中文翻译 +Documentation/process/magic-number.rst的中文翻译 如果想评论或更新本文的内容，请直接发信到LKML。如果你使用英文交流有困难的话，也可 以向中文版维护者求助。如果本翻译更新不及时或者翻译存在问题，请联系中文版维护者。 diff --git a/Documentation/translations/zh_CN/video4linux/omap3isp.txt b/Documentation/translations/zh_CN/video4linux/omap3isp.txt index 67ffbf352ae0..e9f29375aa95 100644 --- a/Documentation/translations/zh_CN/video4linux/omap3isp.txt +++ b/Documentation/translations/zh_CN/video4linux/omap3isp.txt @@ -1,4 +1,4 @@ -Chinese translated version of Documentation/video4linux/omap3isp.txt +Chinese translated version of Documentation/media/v4l-drivers/omap3isp.rst If you have any comment or update to the content, please contact the original document maintainer directly. However, if you have a problem @@ -11,7 +11,7 @@ Maintainer: Laurent Pinchart David Cohen Chinese maintainer: Fu Wei --------------------------------------------------------------------- -Documentation/video4linux/omap3isp.txt 的中文翻译 +Documentation/media/v4l-drivers/omap3isp.rst 的中文翻译 如果想评论或更新本文的内容，请直接联系原文档的维护者。如果你使用英文 交流有困难的话，也可以向中文版维护者求助。如果本翻译更新不及时或者翻 diff --git a/MAINTAINERS b/MAINTAINERS index 653a2c29ca43..09554034be46 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3079,7 +3079,7 @@ M: Clemens Ladisch L: alsa-devel@alsa-project.org (moderated for non-subscribers) T: git git://git.alsa-project.org/alsa-kernel.git S: Maintained -F: Documentation/sound/alsa/Bt87x.txt +F: Documentation/sound/cards/bt87x.rst F: sound/pci/bt87x.c BT8XXGPIO DRIVER @@ -3375,7 +3375,7 @@ M: David Howells M: David Woodhouse L: keyrings@vger.kernel.org S: Maintained -F: Documentation/module-signing.txt +F: Documentation/admin-guide/module-signing.rst F: certs/ F: scripts/sign-file.c F: scripts/extract-cert.c @@ -6501,7 +6501,7 @@ L: linux-mm@kvack.org S: Maintained F: mm/hmm* F: include/linux/hmm* -F: Documentation/vm/hmm.txt +F: Documentation/vm/hmm.rst HOST AP DRIVER M: Jouni Malinen @@ -7401,7 +7401,7 @@ F: drivers/platform/x86/intel-wmi-thunderbolt.c INTEL(R) TRACE HUB M: Alexander Shishkin S: Supported -F: Documentation/trace/intel_th.txt +F: Documentation/trace/intel_th.rst F: drivers/hwtracing/intel_th/ INTEL(R) TRUSTED EXECUTION TECHNOLOGY (TXT) @@ -9665,7 +9665,7 @@ F: include/uapi/linux/mmc/ MULTIPLEXER SUBSYSTEM M: Peter Rosin S: Maintained -F: Documentation/ABI/testing/mux/sysfs-class-mux* +F: Documentation/ABI/testing/sysfs-class-mux* F: Documentation/devicetree/bindings/mux/ F: include/linux/dt-bindings/mux/ F: include/linux/mux/ @@ -10244,7 +10244,7 @@ F: arch/powerpc/include/asm/pnv-ocxl.h F: drivers/misc/ocxl/ F: include/misc/ocxl* F: include/uapi/misc/ocxl.h -F: Documentation/accelerators/ocxl.txt +F: Documentation/accelerators/ocxl.rst OMAP AUDIO SUPPORT M: Peter Ujfalusi @@ -13794,7 +13794,7 @@ SYSTEM TRACE MODULE CLASS M: Alexander Shishkin S: Maintained T: git git://git.kernel.org/pub/scm/linux/kernel/git/ash/stm.git -F: Documentation/trace/stm.txt +F: Documentation/trace/stm.rst F: drivers/hwtracing/stm/ F: include/linux/stm.h F: include/uapi/linux/stm.h @@ -14471,7 +14471,7 @@ M: Steven Rostedt M: Ingo Molnar T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf/core S: Maintained -F: Documentation/trace/ftrace.txt +F: Documentation/trace/ftrace.rst F: arch/*/*/*/ftrace.h F: arch/*/kernel/ftrace.c F: include/*/ftrace.h @@ -14940,7 +14940,7 @@ M: Heikki Krogerus L: linux-usb@vger.kernel.org S: Maintained F: Documentation/ABI/testing/sysfs-class-typec -F: Documentation/usb/typec.rst +F: Documentation/driver-api/usb/typec.rst F: drivers/usb/typec/ F: include/linux/usb/typec.h @@ -15770,7 +15770,7 @@ YEALINK PHONE DRIVER M: Henk Vergonet L: usbb2k-api-dev@nongnu.org S: Maintained -F: Documentation/input/yealink.rst +F: Documentation/input/devices/yealink.rst F: drivers/input/misc/yealink.* Z8530 DRIVER FOR AX.25 diff --git a/arch/Kconfig b/arch/Kconfig index 47b235d43909..1aa59063f1fd 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -403,7 +403,7 @@ config SECCOMP_FILTER in terms of Berkeley Packet Filter programs which implement task-defined system call filtering polices. - See Documentation/prctl/seccomp_filter.txt for details. + See Documentation/userspace-api/seccomp_filter.rst for details. preferred-plugin-hostcc := $(if-success,[ $(gcc-version) -ge 40800 ],$(HOSTCXX),$(HOSTCC)) diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index 869080bedb89..ec1a5fd0d294 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -35,7 +35,7 @@ * Start addresses are inclusive and end addresses are exclusive; * start addresses should be rounded down, end addresses up. * - * See Documentation/cachetlb.txt for more information. + * See Documentation/core-api/cachetlb.rst for more information. * Please note that the implementation of these, and the required * effects are cache-type (VIVT/VIPT/PIPT) specific. * diff --git a/arch/arm64/include/asm/cacheflush.h b/arch/arm64/include/asm/cacheflush.h index 0094c6653b06..d264a7274811 100644 --- a/arch/arm64/include/asm/cacheflush.h +++ b/arch/arm64/include/asm/cacheflush.h @@ -36,7 +36,7 @@ * Start addresses are inclusive and end addresses are exclusive; start * addresses should be rounded down, end addresses up. * - * See Documentation/cachetlb.txt for more information. Please note that + * See Documentation/core-api/cachetlb.rst for more information. Please note that * the implementation assumes non-aliasing VIPT D-cache and (aliasing) * VIPT I-cache. * diff --git a/arch/microblaze/include/asm/cacheflush.h b/arch/microblaze/include/asm/cacheflush.h index ffea82a16d2c..b091de77b15b 100644 --- a/arch/microblaze/include/asm/cacheflush.h +++ b/arch/microblaze/include/asm/cacheflush.h @@ -19,7 +19,7 @@ #include #include -/* Look at Documentation/cachetlb.txt */ +/* Look at Documentation/core-api/cachetlb.rst */ /* * Cache handling functions. diff --git a/arch/um/Kconfig.um b/arch/um/Kconfig.um index 3e7f228b22e1..20da5a8ca949 100644 --- a/arch/um/Kconfig.um +++ b/arch/um/Kconfig.um @@ -80,7 +80,7 @@ config MAGIC_SYSRQ On UML, this is accomplished by sending a "sysrq" command with mconsole, followed by the letter for the requested command. - The keys are documented in . Don't say Y + The keys are documented in . Don't say Y unless you really know what this hack does. config KERNEL_STACK_ORDER diff --git a/arch/unicore32/include/asm/cacheflush.h b/arch/unicore32/include/asm/cacheflush.h index 1d9132b66039..1c8b9f13a9e1 100644 --- a/arch/unicore32/include/asm/cacheflush.h +++ b/arch/unicore32/include/asm/cacheflush.h @@ -33,7 +33,7 @@ * Start addresses are inclusive and end addresses are exclusive; * start addresses should be rounded down, end addresses up. * - * See Documentation/cachetlb.txt for more information. + * See Documentation/core-api/cachetlb.rst for more information. * Please note that the implementation of these, and the required * effects are cache-type (VIVT/VIPT/PIPT) specific. * diff --git a/arch/x86/entry/vsyscall/vsyscall_64.c b/arch/x86/entry/vsyscall/vsyscall_64.c index 7782cdbcd67d..82ed001e8909 100644 --- a/arch/x86/entry/vsyscall/vsyscall_64.c +++ b/arch/x86/entry/vsyscall/vsyscall_64.c @@ -201,7 +201,7 @@ bool emulate_vsyscall(struct pt_regs *regs, unsigned long address) /* * Handle seccomp. regs->ip must be the original value. - * See seccomp_send_sigsys and Documentation/prctl/seccomp_filter.txt. + * See seccomp_send_sigsys and Documentation/userspace-api/seccomp_filter.rst. * * We could optimize the seccomp disabled case, but performance * here doesn't matter. diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h index 397d6a1a4224..a0d50be5a8cb 100644 --- a/arch/xtensa/include/asm/cacheflush.h +++ b/arch/xtensa/include/asm/cacheflush.h @@ -88,7 +88,7 @@ static inline void __invalidate_icache_page_alias(unsigned long virt, * * Pages can get remapped. Because this might change the 'color' of that page, * we have to flush the cache before the PTE is changed. - * (see also Documentation/cachetlb.txt) + * (see also Documentation/core-api/cachetlb.rst) */ #if defined(CONFIG_MMU) && \ @@ -152,7 +152,7 @@ void local_flush_cache_page(struct vm_area_struct *vma, __invalidate_icache_range(start,(end) - (start)); \ } while (0) -/* This is not required, see Documentation/cachetlb.txt */ +/* This is not required, see Documentation/core-api/cachetlb.rst */ #define flush_icache_page(vma,page) do { } while (0) #define flush_dcache_mmap_lock(mapping) do { } while (0) diff --git a/block/Kconfig b/block/Kconfig index 28ec55752b68..eb50fd4977c2 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -114,7 +114,7 @@ config BLK_DEV_THROTTLING one needs to mount and use blkio cgroup controller for creating cgroups and specifying per device IO rate policies. - See Documentation/cgroups/blkio-controller.txt for more information. + See Documentation/cgroup-v1/blkio-controller.txt for more information. config BLK_DEV_THROTTLING_LOW bool "Block throttling .low limit interface support (EXPERIMENTAL)" diff --git a/certs/Kconfig b/certs/Kconfig index 5f7663df6e8e..c94e93d8bccf 100644 --- a/certs/Kconfig +++ b/certs/Kconfig @@ -13,7 +13,7 @@ config MODULE_SIG_KEY If this option is unchanged from its default "certs/signing_key.pem", then the kernel will automatically generate the private key and - certificate as described in Documentation/module-signing.txt + certificate as described in Documentation/admin-guide/module-signing.rst config SYSTEM_TRUSTED_KEYRING bool "Provide system-wide ring of trusted keys" diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c index 39aecad286fe..26539e9a8bda 100644 --- a/crypto/asymmetric_keys/asymmetric_type.c +++ b/crypto/asymmetric_keys/asymmetric_type.c @@ -1,6 +1,6 @@ /* Asymmetric public-key cryptography key type * - * See Documentation/security/asymmetric-keys.txt + * See Documentation/crypto/asymmetric-keys.txt * * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) diff --git a/crypto/asymmetric_keys/signature.c b/crypto/asymmetric_keys/signature.c index 11b7ba170904..28198314bc39 100644 --- a/crypto/asymmetric_keys/signature.c +++ b/crypto/asymmetric_keys/signature.c @@ -1,6 +1,6 @@ /* Signature verification with an asymmetric key * - * See Documentation/security/asymmetric-keys.txt + * See Documentation/crypto/asymmetric-keys.txt * * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 410c30c42120..212f447938ae 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -81,7 +81,7 @@ config PRINTER corresponding drivers into the kernel. To compile this driver as a module, choose M here and read - . The module will be called lp. + . The module will be called lp. If you have several parallel ports, you can specify which ports to use with the "lp" kernel command line option. (Try "man bootparam" diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index a24a6afb50b6..9760b526ca31 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -6,7 +6,7 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * - * Standard functionality for the common clock API. See Documentation/clk.txt + * Standard functionality for the common clock API. See Documentation/driver-api/clk.rst */ #include @@ -2747,7 +2747,7 @@ static int __clk_core_init(struct clk_core *core) goto out; } - /* check that clk_ops are sane. See Documentation/clk.txt */ + /* check that clk_ops are sane. See Documentation/driver-api/clk.rst */ if (core->ops->set_rate && !((core->ops->round_rate || core->ops->determine_rate) && core->ops->recalc_rate)) { diff --git a/drivers/clk/ingenic/cgu.h b/drivers/clk/ingenic/cgu.h index 542192376ebf..502bcbb61b04 100644 --- a/drivers/clk/ingenic/cgu.h +++ b/drivers/clk/ingenic/cgu.h @@ -194,7 +194,7 @@ struct ingenic_cgu { /** * struct ingenic_clk - private data for a clock - * @hw: see Documentation/clk.txt + * @hw: see Documentation/driver-api/clk.rst * @cgu: a pointer to the CGU data * @idx: the index of this clock in cgu->clock_info */ diff --git a/drivers/gpu/vga/Kconfig b/drivers/gpu/vga/Kconfig index 29437eabe095..b677e5d524e6 100644 --- a/drivers/gpu/vga/Kconfig +++ b/drivers/gpu/vga/Kconfig @@ -6,7 +6,7 @@ config VGA_ARB Some "legacy" VGA devices implemented on PCI typically have the same hard-decoded addresses as they did on ISA. When multiple PCI devices are accessed at same time they need some kind of coordination. Please - see Documentation/vgaarbiter.txt for more details. Select this to + see Documentation/gpu/vgaarbiter.rst for more details. Select this to enable VGA arbiter. config VGA_ARB_MAX_GPUS diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/gpu/vga/vgaarb.c index 1c5e74cb9279..c61b04555779 100644 --- a/drivers/gpu/vga/vgaarb.c +++ b/drivers/gpu/vga/vgaarb.c @@ -1,6 +1,6 @@ /* * vgaarb.c: Implements the VGA arbitration. For details refer to - * Documentation/vgaarbiter.txt + * Documentation/gpu/vgaarbiter.rst * * * (C) Copyright 2005 Benjamin Herrenschmidt diff --git a/drivers/input/joystick/Kconfig b/drivers/input/joystick/Kconfig index 32ec4cee6716..d8f9c6e1fc08 100644 --- a/drivers/input/joystick/Kconfig +++ b/drivers/input/joystick/Kconfig @@ -214,7 +214,7 @@ config JOYSTICK_DB9 gamepad, Sega Saturn gamepad, or a Multisystem -- Atari, Amiga, Commodore, Amstrad CPC joystick connected to your parallel port. For more information on how to use the driver please read - . + . To compile this driver as a module, choose M here: the module will be called db9. @@ -229,7 +229,7 @@ config JOYSTICK_GAMECON Sony PlayStation gamepad or a Multisystem -- Atari, Amiga, Commodore, Amstrad CPC joystick connected to your parallel port. For more information on how to use the driver please read - . + . To compile this driver as a module, choose M here: the module will be called gamecon. @@ -241,7 +241,7 @@ config JOYSTICK_TURBOGRAFX Say Y here if you have the TurboGraFX interface by Steffen Schwenke, and want to use it with Multisystem -- Atari, Amiga, Commodore, Amstrad CPC joystick. For more information on how to use the driver - please read . + please read . To compile this driver as a module, choose M here: the module will be called turbografx. @@ -287,7 +287,7 @@ config JOYSTICK_XPAD and/or "Event interface support" (CONFIG_INPUT_EVDEV) as well. For information about how to connect the X-Box pad to USB, see - . + . To compile this driver as a module, choose M here: the module will be called xpad. @@ -313,7 +313,7 @@ config JOYSTICK_WALKERA0701 Say Y or M here if you have a Walkera WK-0701 transmitter which is supplied with a ready to fly Walkera helicopters such as HM36, HM37, HM60 and want to use it via parport as a joystick. More - information is available: + information is available: To compile this driver as a module, choose M here: the module will be called walkera0701. diff --git a/drivers/input/joystick/walkera0701.c b/drivers/input/joystick/walkera0701.c index 36a5b93156ed..dce313dc260a 100644 --- a/drivers/input/joystick/walkera0701.c +++ b/drivers/input/joystick/walkera0701.c @@ -3,7 +3,7 @@ * * Copyright (c) 2008 Peter Popovec * - * More about driver: + * More about driver: */ /* diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 572b15fa18c2..c25606e00693 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -411,7 +411,7 @@ config INPUT_YEALINK usb sound driver, so you might want to enable that as well. For information about how to use these additional functions, see - . + . To compile this driver as a module, choose M here: the module will be called yealink. @@ -595,7 +595,7 @@ config INPUT_GPIO_ROTARY_ENCODER depends on GPIOLIB || COMPILE_TEST help Say Y here to add support for rotary encoders connected to GPIO lines. - Check file:Documentation/input/rotary-encoder.txt for more + Check file:Documentation/input/devices/rotary-encoder.rst for more information. To compile this driver as a module, choose M here: the diff --git a/drivers/input/misc/rotary_encoder.c b/drivers/input/misc/rotary_encoder.c index 6d304381fc30..30ec77ad32c6 100644 --- a/drivers/input/misc/rotary_encoder.c +++ b/drivers/input/misc/rotary_encoder.c @@ -7,7 +7,7 @@ * state machine code inspired by code from Tim Ruetz * * A generic driver for rotary encoders connected to GPIO lines. - * See file:Documentation/input/rotary-encoder.txt for more information + * See file:Documentation/input/devices/rotary-encoder.rst for more information * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig index f27f23f2d99a..566a1e3aa504 100644 --- a/drivers/input/mouse/Kconfig +++ b/drivers/input/mouse/Kconfig @@ -129,7 +129,7 @@ config MOUSE_PS2_ELANTECH This driver exposes some configuration registers via sysfs entries. For further information, - see . + see . If unsure, say N. @@ -228,7 +228,7 @@ config MOUSE_APPLETOUCH scrolling in X11. For further information, see - . + . To compile this driver as a module, choose M here: the module will be called appletouch. @@ -251,7 +251,7 @@ config MOUSE_BCM5974 The interface is currently identical to the appletouch interface, for further information, see - . + . To compile this driver as a module, choose M here: the module will be called bcm5974. diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index cb5579716dba..0a6f7ca883e7 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -212,7 +212,7 @@ static void alps_set_abs_params_v7(struct alps_data *priv, static void alps_set_abs_params_ss4_v2(struct alps_data *priv, struct input_dev *dev1); -/* Packet formats are described in Documentation/input/alps.txt */ +/* Packet formats are described in Documentation/input/devices/alps.rst */ static bool alps_is_valid_first_byte(struct alps_data *priv, unsigned char data) diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c index fd714ee881f7..2566b4d8b342 100644 --- a/drivers/input/touchscreen/wm97xx-core.c +++ b/drivers/input/touchscreen/wm97xx-core.c @@ -68,7 +68,7 @@ * The default values correspond to Mainstone II in QVGA mode * * Please read - * Documentation/input/input-programming.txt for more details. + * Documentation/input/input-programming.rst for more details. */ static int abs_x[3] = {150, 4000, 5}; diff --git a/drivers/lightnvm/pblk-rb.c b/drivers/lightnvm/pblk-rb.c index 00cd1f20a196..55e9442a99e2 100644 --- a/drivers/lightnvm/pblk-rb.c +++ b/drivers/lightnvm/pblk-rb.c @@ -38,7 +38,7 @@ void pblk_rb_data_free(struct pblk_rb *rb) /* * Initialize ring buffer. The data and metadata buffers must be previously * allocated and their size must be a power of two - * (Documentation/circular-buffers.txt) + * (Documentation/core-api/circular-buffers.rst) */ int pblk_rb_init(struct pblk_rb *rb, struct pblk_rb_entry *rb_entry_base, unsigned int power_size, unsigned int power_seg_sz) diff --git a/drivers/md/bcache/Kconfig b/drivers/md/bcache/Kconfig index 4d200883c505..17bf109c58e9 100644 --- a/drivers/md/bcache/Kconfig +++ b/drivers/md/bcache/Kconfig @@ -5,7 +5,7 @@ config BCACHE Allows a block device to be used as cache for other devices; uses a btree for indexing and the layout is optimized for SSDs. - See Documentation/bcache.txt for details. + See Documentation/admin-guide/bcache.rst for details. config BCACHE_DEBUG bool "Bcache debugging" diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c index 2a0968c04e21..547c9eedc2f4 100644 --- a/drivers/md/bcache/btree.c +++ b/drivers/md/bcache/btree.c @@ -18,7 +18,7 @@ * as keys are inserted we only sort the pages that have not yet been written. * When garbage collection is run, we resort the entire node. * - * All configuration is done via sysfs; see Documentation/bcache.txt. + * All configuration is done via sysfs; see Documentation/admin-guide/bcache.rst. */ #include "bcache.h" diff --git a/drivers/md/bcache/extents.c b/drivers/md/bcache/extents.c index c334e6666461..1d096742eb41 100644 --- a/drivers/md/bcache/extents.c +++ b/drivers/md/bcache/extents.c @@ -18,7 +18,7 @@ * as keys are inserted we only sort the pages that have not yet been written. * When garbage collection is run, we resort the entire node. * - * All configuration is done via sysfs; see Documentation/bcache.txt. + * All configuration is done via sysfs; see Documentation/admin-guide/bcache.rst. */ #include "bcache.h" diff --git a/drivers/media/dvb-core/dvb_ringbuffer.c b/drivers/media/dvb-core/dvb_ringbuffer.c index 4330b6fa4af2..d1d471af0636 100644 --- a/drivers/media/dvb-core/dvb_ringbuffer.c +++ b/drivers/media/dvb-core/dvb_ringbuffer.c @@ -55,7 +55,7 @@ int dvb_ringbuffer_empty(struct dvb_ringbuffer *rbuf) * this pairs with smp_store_release() in dvb_ringbuffer_write(), * dvb_ringbuffer_write_user(), or dvb_ringbuffer_reset() * - * for memory barriers also see Documentation/circular-buffers.txt + * for memory barriers also see Documentation/core-api/circular-buffers.rst */ return (rbuf->pread == smp_load_acquire(&rbuf->pwrite)); } diff --git a/drivers/media/pci/meye/Kconfig b/drivers/media/pci/meye/Kconfig index 2e60334ffef5..9a50f54231ad 100644 --- a/drivers/media/pci/meye/Kconfig +++ b/drivers/media/pci/meye/Kconfig @@ -5,7 +5,7 @@ config VIDEO_MEYE ---help--- This is the video4linux driver for the Motion Eye camera found in the Vaio Picturebook laptops. Please read the material in - for more information. + for more information. If you say Y or M here, you need to say Y or M to "Sony Laptop Extras" in the misc device section. diff --git a/drivers/media/platform/pxa_camera.c b/drivers/media/platform/pxa_camera.c index 4d5a26b4cdda..d85ffbfb7c1f 100644 --- a/drivers/media/platform/pxa_camera.c +++ b/drivers/media/platform/pxa_camera.c @@ -1021,7 +1021,7 @@ static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev, * - a videobuffer is queued on the pcdev->capture list * * Please check the "DMA hot chaining timeslice issue" in - * Documentation/video4linux/pxa_camera.txt + * Documentation/media/v4l-drivers/pxa_camera.rst * * Context: should only be called within the dma irq handler */ @@ -1443,7 +1443,7 @@ static void pxac_vb2_queue(struct vb2_buffer *vb) /* * Please check the DMA prepared buffer structure in : - * Documentation/video4linux/pxa_camera.txt + * Documentation/media/v4l-drivers/pxa_camera.rst * Please check also in pxa_camera_check_link_miss() to understand why DMA chain * modification while DMA chain is running will work anyway. */ diff --git a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c index 242342fd7ede..9897213f2618 100644 --- a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c +++ b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c @@ -1111,7 +1111,7 @@ static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) /* * CEU can scale and crop, but we don't want to waste bandwidth and kill the * framerate by always requesting the maximum image from the client. See - * Documentation/video4linux/sh_mobile_ceu_camera.txt for a description of + * Documentation/media/v4l-drivers/sh_mobile_ceu_camera.rst for a description of * scaling and cropping algorithms and for the meaning of referenced here steps. */ static int sh_mobile_ceu_set_selection(struct soc_camera_device *icd, diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig index 39b04ad924c0..b426d6f9787d 100644 --- a/drivers/media/radio/Kconfig +++ b/drivers/media/radio/Kconfig @@ -272,7 +272,7 @@ config RADIO_RTRACK been reported to be used by these cards. More information is contained in the file - . + . To compile this driver as a module, choose M here: the module will be called radio-aimslab. diff --git a/drivers/media/radio/si470x/Kconfig b/drivers/media/radio/si470x/Kconfig index a21172e413a9..6dbb158cd2a0 100644 --- a/drivers/media/radio/si470x/Kconfig +++ b/drivers/media/radio/si470x/Kconfig @@ -29,7 +29,7 @@ config USB_SI470X Please have a look at the documentation, especially on how to redirect the audio stream from the radio to your sound device: - Documentation/video4linux/si470x.txt + Documentation/media/v4l-drivers/si470x.rst Say Y here if you want to connect this type of radio to your computer's USB port. diff --git a/drivers/media/usb/dvb-usb-v2/lmedm04.c b/drivers/media/usb/dvb-usb-v2/lmedm04.c index be26c029546b..39db6dc4b5cd 100644 --- a/drivers/media/usb/dvb-usb-v2/lmedm04.c +++ b/drivers/media/usb/dvb-usb-v2/lmedm04.c @@ -21,7 +21,7 @@ * * LME2510C + M88RS2000 * - * For firmware see Documentation/dvb/lmedm04.txt + * For firmware see Documentation/media/dvb-drivers/lmedm04.rst * * I2C addresses: * 0xd0 - STV0288 - Demodulator diff --git a/drivers/media/usb/zr364xx/Kconfig b/drivers/media/usb/zr364xx/Kconfig index 0f585662881d..ac429bca70e8 100644 --- a/drivers/media/usb/zr364xx/Kconfig +++ b/drivers/media/usb/zr364xx/Kconfig @@ -6,7 +6,7 @@ config USB_ZR364XX ---help--- Say Y here if you want to connect this type of camera to your computer's USB port. - See for more info + See for more info and list of supported cameras. To compile this driver as a module, choose M here: the diff --git a/drivers/parport/Kconfig b/drivers/parport/Kconfig index 44333bd8f908..a97f4eada60b 100644 --- a/drivers/parport/Kconfig +++ b/drivers/parport/Kconfig @@ -20,7 +20,7 @@ menuconfig PARPORT drive, PLIP link (Parallel Line Internet Protocol is mainly used to create a mini network by connecting the parallel ports of two local machines) etc., then you need to say Y here; please read - and + and . For extensive information about drivers for many devices attaching @@ -33,7 +33,7 @@ menuconfig PARPORT the module will be called parport. If you have more than one parallel port and want to specify which port and IRQ to be used by this driver at module load time, take a - look at . + look at . If unsure, say Y. @@ -71,7 +71,7 @@ config PARPORT_PC_FIFO As well as actually having a FIFO, or DMA capability, the kernel will need to know which IRQ the parallel port has. By default, parallel port interrupts will not be used, and so neither will the - FIFO. See to find out how to + FIFO. See to find out how to specify which IRQ/DMA to use. config PARPORT_PC_SUPERIO diff --git a/drivers/staging/media/bcm2048/TODO b/drivers/staging/media/bcm2048/TODO index 051f85dbe89e..6bee2a2dad68 100644 --- a/drivers/staging/media/bcm2048/TODO +++ b/drivers/staging/media/bcm2048/TODO @@ -3,7 +3,7 @@ TODO: From the initial code review: The main thing you need to do is to implement all the controls using the -control framework (see Documentation/video4linux/v4l2-controls.txt). +control framework (see Documentation/media/kapi/v4l2-controls.rst). Most drivers are by now converted to the control framework, so you will find many examples of how to do this in drivers/media/radio. diff --git a/include/keys/asymmetric-subtype.h b/include/keys/asymmetric-subtype.h index 2480469ce8fb..e0a9c2368872 100644 --- a/include/keys/asymmetric-subtype.h +++ b/include/keys/asymmetric-subtype.h @@ -1,6 +1,6 @@ /* Asymmetric public-key cryptography key subtype * - * See Documentation/security/asymmetric-keys.txt + * See Documentation/crypto/asymmetric-keys.txt * * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) diff --git a/include/keys/asymmetric-type.h b/include/keys/asymmetric-type.h index b38240716d41..1cb77cd5135e 100644 --- a/include/keys/asymmetric-type.h +++ b/include/keys/asymmetric-type.h @@ -1,6 +1,6 @@ /* Asymmetric Public-key cryptography key type interface * - * See Documentation/security/asymmetric-keys.txt + * See Documentation/crypto/asymmetric-keys.txt * * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) diff --git a/include/linux/assoc_array.h b/include/linux/assoc_array.h index a89df3be1686..65e3832f96b2 100644 --- a/include/linux/assoc_array.h +++ b/include/linux/assoc_array.h @@ -1,6 +1,6 @@ /* Generic associative array implementation. * - * See Documentation/assoc_array.txt for information. + * See Documentation/core-api/assoc_array.rst for information. * * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) diff --git a/include/linux/assoc_array_priv.h b/include/linux/assoc_array_priv.h index 711275e6681c..a00a06550c10 100644 --- a/include/linux/assoc_array_priv.h +++ b/include/linux/assoc_array_priv.h @@ -1,6 +1,6 @@ /* Private definitions for the generic associative array implementation. * - * See Documentation/assoc_array.txt for information. + * See Documentation/core-api/assoc_array.rst for information. * * Copyright (C) 2013 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) diff --git a/include/linux/circ_buf.h b/include/linux/circ_buf.h index 7cf262a421c3..b3233e8202f9 100644 --- a/include/linux/circ_buf.h +++ b/include/linux/circ_buf.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * See Documentation/circular-buffers.txt for more information. + * See Documentation/core-api/circular-buffers.rst for more information. */ #ifndef _LINUX_CIRC_BUF_H diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 9c3c9a319e48..8154f4920fcb 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* * Ftrace header. For implementation details beyond the random comments - * scattered below, see: Documentation/trace/ftrace-design.txt + * scattered below, see: Documentation/trace/ftrace-design.rst */ #ifndef _LINUX_FTRACE_H diff --git a/include/linux/rculist_nulls.h b/include/linux/rculist_nulls.h index e4b257ff881b..bc8206a8f30e 100644 --- a/include/linux/rculist_nulls.h +++ b/include/linux/rculist_nulls.h @@ -109,7 +109,7 @@ static inline void hlist_nulls_add_head_rcu(struct hlist_nulls_node *n, * * The barrier() is needed to make sure compiler doesn't cache first element [1], * as this loop can be restarted [2] - * [1] Documentation/atomic_ops.txt around line 114 + * [1] Documentation/core-api/atomic_ops.rst around line 114 * [2] Documentation/RCU/rculist_nulls.txt around line 146 */ #define hlist_nulls_for_each_entry_rcu(tpos, pos, head, member) \ diff --git a/include/uapi/linux/prctl.h b/include/uapi/linux/prctl.h index db9f15f5db04..c0d7ea0bf5b6 100644 --- a/include/uapi/linux/prctl.h +++ b/include/uapi/linux/prctl.h @@ -170,7 +170,7 @@ struct prctl_mm_map { * asking selinux for a specific new context (e.g. with runcon) will result * in execve returning -EPERM. * - * See Documentation/prctl/no_new_privs.txt for more details. + * See Documentation/userspace-api/no_new_privs.rst for more details. */ #define PR_SET_NO_NEW_PRIVS 38 #define PR_GET_NO_NEW_PRIVS 39 diff --git a/include/xen/interface/io/kbdif.h b/include/xen/interface/io/kbdif.h index 2a9510ade701..e2340a4130cf 100644 --- a/include/xen/interface/io/kbdif.h +++ b/include/xen/interface/io/kbdif.h @@ -317,7 +317,7 @@ struct xenkbd_position { * Linux [2] and Windows [3] multi-touch support. * * [1] https://cgit.freedesktop.org/wayland/wayland/tree/protocol/wayland.xml - * [2] https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt + * [2] https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.rst * [3] https://msdn.microsoft.com/en-us/library/jj151564(v=vs.85).aspx * * diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index d8b12e0d39cd..266f10cb7222 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -605,7 +605,7 @@ static inline int nr_cpusets(void) * load balancing domains (sched domains) as specified by that partial * partition. * - * See "What is sched_load_balance" in Documentation/cgroups/cpusets.txt + * See "What is sched_load_balance" in Documentation/cgroup-v1/cpusets.txt * for a background explanation of this. * * Does not return errors, on the theory that the callers of this diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index dd6c0a2ad969..dcc0166d1997 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -12,22 +12,22 @@ config NOP_TRACER config HAVE_FTRACE_NMI_ENTER bool help - See Documentation/trace/ftrace-design.txt + See Documentation/trace/ftrace-design.rst config HAVE_FUNCTION_TRACER bool help - See Documentation/trace/ftrace-design.txt + See Documentation/trace/ftrace-design.rst config HAVE_FUNCTION_GRAPH_TRACER bool help - See Documentation/trace/ftrace-design.txt + See Documentation/trace/ftrace-design.rst config HAVE_DYNAMIC_FTRACE bool help - See Documentation/trace/ftrace-design.txt + See Documentation/trace/ftrace-design.rst config HAVE_DYNAMIC_FTRACE_WITH_REGS bool @@ -35,12 +35,12 @@ config HAVE_DYNAMIC_FTRACE_WITH_REGS config HAVE_FTRACE_MCOUNT_RECORD bool help - See Documentation/trace/ftrace-design.txt + See Documentation/trace/ftrace-design.rst config HAVE_SYSCALL_TRACEPOINTS bool help - See Documentation/trace/ftrace-design.txt + See Documentation/trace/ftrace-design.rst config HAVE_FENTRY bool @@ -448,7 +448,7 @@ config KPROBE_EVENTS help This allows the user to add tracing events (similar to tracepoints) on the fly via the ftrace interface. See - Documentation/trace/kprobetrace.txt for more details. + Documentation/trace/kprobetrace.rst for more details. Those events can be inserted wherever kprobes can probe, and record various register and memory values. @@ -575,7 +575,7 @@ config MMIOTRACE implementation and works via page faults. Tracing is disabled by default and can be enabled at run-time. - See Documentation/trace/mmiotrace.txt. + See Documentation/trace/mmiotrace.rst. If you are not helping to develop drivers, say N. config TRACING_MAP diff --git a/lib/Kconfig b/lib/Kconfig index 809fdd155739..e34b04b56057 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -405,7 +405,7 @@ config ASSOCIATIVE_ARRAY See: - Documentation/assoc_array.txt + Documentation/core-api/assoc_array.rst for more information. diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 9a46dc24ac10..2b5ee5fbd652 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -4728,7 +4728,7 @@ err_af: } /* This supports connect(2) and SCTP connect services such as sctp_connectx(3) - * and sctp_sendmsg(3) as described in Documentation/security/LSM-sctp.txt + * and sctp_sendmsg(3) as described in Documentation/security/LSM-sctp.rst */ static int selinux_socket_connect_helper(struct socket *sock, struct sockaddr *address, int addrlen) diff --git a/sound/core/Kconfig b/sound/core/Kconfig index 6e937a8146a1..63b3ef9c83f5 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -48,7 +48,7 @@ config SND_MIXER_OSS depends on SND_OSSEMUL help To enable OSS mixer API emulation (/dev/mixer*), say Y here - and read . + and read . Many programs still use the OSS API, so say Y. @@ -61,7 +61,7 @@ config SND_PCM_OSS select SND_PCM help To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y - here and read . + here and read . Many programs still use the OSS API, so say Y. diff --git a/sound/drivers/Kconfig b/sound/drivers/Kconfig index 7144cc36e8ae..648a12da44f9 100644 --- a/sound/drivers/Kconfig +++ b/sound/drivers/Kconfig @@ -153,7 +153,7 @@ config SND_SERIAL_U16550 select SND_RAWMIDI help To include support for MIDI serial port interfaces, say Y here - and read . + and read . This driver works with serial UARTs 16550 and better. This driver accesses the serial port hardware directly, so @@ -223,7 +223,7 @@ config SND_AC97_POWER_SAVE the device frequently. A value of 10 seconds would be a good choice for normal operations. - See Documentation/sound/alsa/powersave.txt for more details. + See Documentation/sound/designs/powersave.rst for more details. config SND_AC97_POWER_SAVE_DEFAULT int "Default time-out for AC97 power-save mode" diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig index d9f3fdb777e4..4105d9f653d9 100644 --- a/sound/pci/Kconfig +++ b/sound/pci/Kconfig @@ -175,7 +175,7 @@ config SND_BT87X help If you want to record audio from TV cards based on Brooktree Bt878/Bt879 chips, say Y here and read - . + . To compile this driver as a module, choose M here: the module will be called snd-bt87x. @@ -210,7 +210,7 @@ config SND_CMIPCI help If you want to use soundcards based on C-Media CMI8338, CMI8738, CMI8768 or CMI8770 chips, say Y here and read - . + . To compile this driver as a module, choose M here: the module will be called snd-cmipci. @@ -472,8 +472,8 @@ config SND_EMU10K1 Audigy and E-mu APS (partially supported) soundcards. The confusing multitude of mixer controls is documented in - and - . + and + . To compile this driver as a module, choose M here: the module will be called snd-emu10k1. @@ -735,7 +735,7 @@ config SND_MIXART select SND_PCM help If you want to use Digigram miXart soundcards, say Y here and - read . + read . To compile this driver as a module, choose M here: the module will be called snd-mixart. diff --git a/tools/include/uapi/linux/prctl.h b/tools/include/uapi/linux/prctl.h index db9f15f5db04..c0d7ea0bf5b6 100644 --- a/tools/include/uapi/linux/prctl.h +++ b/tools/include/uapi/linux/prctl.h @@ -170,7 +170,7 @@ struct prctl_mm_map { * asking selinux for a specific new context (e.g. with runcon) will result * in execve returning -EPERM. * - * See Documentation/prctl/no_new_privs.txt for more details. + * See Documentation/userspace-api/no_new_privs.rst for more details. */ #define PR_SET_NO_NEW_PRIVS 38 #define PR_GET_NO_NEW_PRIVS 39 diff --git a/tools/lib/api/fs/fs.c b/tools/lib/api/fs/fs.c index 6a12bbf39f7b..7aba8243a0e7 100644 --- a/tools/lib/api/fs/fs.c +++ b/tools/lib/api/fs/fs.c @@ -201,7 +201,7 @@ static void mem_toupper(char *f, size_t len) /* * Check for "NAME_PATH" environment variable to override fs location (for - * testing). This matches the recommendation in Documentation/sysfs-rules.txt + * testing). This matches the recommendation in Documentation/admin-guide/sysfs-rules.rst * for SYSFS_PATH. */ static bool fs__env_override(struct fs *fs) diff --git a/tools/perf/util/bpf-prologue.c b/tools/perf/util/bpf-prologue.c index 29347756b0af..77e4891e17b0 100644 --- a/tools/perf/util/bpf-prologue.c +++ b/tools/perf/util/bpf-prologue.c @@ -61,7 +61,7 @@ check_pos(struct bpf_insn_pos *pos) /* * Convert type string (u8/u16/u32/u64/s8/s16/s32/s64 ..., see - * Documentation/trace/kprobetrace.txt) to size field of BPF_LDX_MEM + * Documentation/trace/kprobetrace.rst) to size field of BPF_LDX_MEM * instruction (BPF_{B,H,W,DW}). */ static int diff --git a/tools/power/pm-graph/config/custom-timeline-functions.cfg b/tools/power/pm-graph/config/custom-timeline-functions.cfg index 4f80ad7d7275..f8fcb06fd68b 100644 --- a/tools/power/pm-graph/config/custom-timeline-functions.cfg +++ b/tools/power/pm-graph/config/custom-timeline-functions.cfg @@ -105,7 +105,7 @@ override-dev-timeline-functions: true # example: [color=#CC00CC] # # arglist: A list of arguments from registers/stack addresses. See URL: -# https://www.kernel.org/doc/Documentation/trace/kprobetrace.txt +# https://www.kernel.org/doc/Documentation/trace/kprobetrace.rst # # example: cpu=%di:s32 # @@ -170,7 +170,7 @@ pm_restore_console: # example: [color=#CC00CC] # # arglist: A list of arguments from registers/stack addresses. See URL: -# https://www.kernel.org/doc/Documentation/trace/kprobetrace.txt +# https://www.kernel.org/doc/Documentation/trace/kprobetrace.rst # # example: port=+36(%di):s32 # -- cgit v1.2.3 From 043f891b70e6197bc181f3b087c2bd04c60fddd2 Mon Sep 17 00:00:00 2001 From: Petr Mladek Date: Mon, 25 Jun 2018 13:28:06 +0200 Subject: Revert "lib/test_printf.c: call wait_for_random_bytes() before plain %p tests" This reverts commit ee410f15b1418f2f4428e79980674c979081bcb7. It might prevent the machine from boot. It would wait for enough randomness at the very beginning of kernel_init(). But there is basically nothing running in parallel that would help to produce any randomness. Reported-by: Steven Rostedt (VMware) Signed-off-by: Petr Mladek --- lib/test_printf.c | 7 ------- 1 file changed, 7 deletions(-) (limited to 'lib') diff --git a/lib/test_printf.c b/lib/test_printf.c index b2aa8f514844..cea592f402ed 100644 --- a/lib/test_printf.c +++ b/lib/test_printf.c @@ -260,13 +260,6 @@ plain(void) { int err; - /* - * Make sure crng is ready. Otherwise we get "(ptrval)" instead - * of a hashed address when printing '%p' in plain_hash() and - * plain_format(). - */ - wait_for_random_bytes(); - err = plain_hash(); if (err) { pr_warn("plain 'p' does not appear to be hashed\n"); -- cgit v1.2.3 From 4bb6e96ab808f88d746343637f0cc2243b527da5 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Wed, 27 Jun 2018 23:26:01 -0700 Subject: lib/percpu_ida.c: don't do alloc from per-CPU list if there is none In commit 804209d8a009 ("lib/percpu_ida.c: use _irqsave() instead of local_irq_save() + spin_lock") I inlined alloc_local_tag() and mixed up the >= check from percpu_ida_alloc() with the one in alloc_local_tag(). Don't alloc from per-CPU freelist if ->nr_free is zero. Link: http://lkml.kernel.org/r/20180613075830.c3zeva52fuj6fxxv@linutronix.de Fixes: 804209d8a009 ("lib/percpu_ida.c: use _irqsave() instead of local_irq_save() + spin_lock") Signed-off-by: Sebastian Andrzej Siewior Reported-by: David Disseldorp Tested-by: David Disseldorp Cc: Thomas Gleixner Cc: Nicholas Bellinger Cc: Shaohua Li Cc: Kent Overstreet Cc: Matthew Wilcox Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/percpu_ida.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'lib') diff --git a/lib/percpu_ida.c b/lib/percpu_ida.c index 9bbd9c5d375a..beb14839b41a 100644 --- a/lib/percpu_ida.c +++ b/lib/percpu_ida.c @@ -141,7 +141,7 @@ int percpu_ida_alloc(struct percpu_ida *pool, int state) spin_lock_irqsave(&tags->lock, flags); /* Fastpath */ - if (likely(tags->nr_free >= 0)) { + if (likely(tags->nr_free)) { tag = tags->freelist[--tags->nr_free]; spin_unlock_irqrestore(&tags->lock, flags); return tag; -- cgit v1.2.3 From dd275caf4a0d9b219fffe49288b6cc33cd564312 Mon Sep 17 00:00:00 2001 From: "Jason A. Donenfeld" Date: Wed, 27 Jun 2018 23:26:20 -0700 Subject: kasan: depend on CONFIG_SLUB_DEBUG KASAN depends on having access to some of the accounting that SLUB_DEBUG does; without it, there are immediate crashes [1]. So, the natural thing to do is to make KASAN select SLUB_DEBUG. [1] http://lkml.kernel.org/r/CAHmME9rtoPwxUSnktxzKso14iuVCWT7BE_-_8PAC=pGw1iJnQg@mail.gmail.com Link: http://lkml.kernel.org/r/20180622154623.25388-1-Jason@zx2c4.com Fixes: f9e13c0a5a33 ("slab, slub: skip unnecessary kasan_cache_shutdown()") Signed-off-by: Jason A. Donenfeld Acked-by: Michal Hocko Reviewed-by: Shakeel Butt Acked-by: Christoph Lameter Cc: Shakeel Butt Cc: David Rientjes Cc: Pekka Enberg Cc: Joonsoo Kim Cc: Andrey Ryabinin Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/Kconfig.kasan | 1 + 1 file changed, 1 insertion(+) (limited to 'lib') diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index 3d35d062970d..c253c1b46c6b 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -6,6 +6,7 @@ if HAVE_ARCH_KASAN config KASAN bool "KASan: runtime memory debugger" depends on SLUB || (SLAB && !DEBUG_SLAB) + select SLUB_DEBUG if SLUB select CONSTRUCTORS select STACKDEPOT help -- cgit v1.2.3 From 3203c9010060806ff88c9989aeab4dc8d9a474dc Mon Sep 17 00:00:00 2001 From: Kleber Sacilotto de Souza Date: Wed, 27 Jun 2018 17:19:21 +0200 Subject: test_bpf: flag tests that cannot be jited on s390 Flag with FLAG_EXPECTED_FAIL the BPF_MAXINSNS tests that cannot be jited on s390 because they exceed BPF_SIZE_MAX and fail when CONFIG_BPF_JIT_ALWAYS_ON is set. Also set .expected_errcode to -ENOTSUPP so the tests pass in that case. Signed-off-by: Kleber Sacilotto de Souza Acked-by: Song Liu Signed-off-by: Daniel Borkmann --- lib/test_bpf.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'lib') diff --git a/lib/test_bpf.c b/lib/test_bpf.c index 60aedc879361..08d3d59dca17 100644 --- a/lib/test_bpf.c +++ b/lib/test_bpf.c @@ -5282,21 +5282,31 @@ static struct bpf_test tests[] = { { /* Mainly checking JIT here. */ "BPF_MAXINSNS: Ctx heavy transformations", { }, +#if defined(CONFIG_BPF_JIT_ALWAYS_ON) && defined(CONFIG_S390) + CLASSIC | FLAG_EXPECTED_FAIL, +#else CLASSIC, +#endif { }, { { 1, !!(SKB_VLAN_TCI & VLAN_TAG_PRESENT) }, { 10, !!(SKB_VLAN_TCI & VLAN_TAG_PRESENT) } }, .fill_helper = bpf_fill_maxinsns6, + .expected_errcode = -ENOTSUPP, }, { /* Mainly checking JIT here. */ "BPF_MAXINSNS: Call heavy transformations", { }, +#if defined(CONFIG_BPF_JIT_ALWAYS_ON) && defined(CONFIG_S390) + CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL, +#else CLASSIC | FLAG_NO_DATA, +#endif { }, { { 1, 0 }, { 10, 0 } }, .fill_helper = bpf_fill_maxinsns7, + .expected_errcode = -ENOTSUPP, }, { /* Mainly checking JIT here. */ "BPF_MAXINSNS: Jump heavy test", @@ -5347,18 +5357,28 @@ static struct bpf_test tests[] = { { "BPF_MAXINSNS: exec all MSH", { }, +#if defined(CONFIG_BPF_JIT_ALWAYS_ON) && defined(CONFIG_S390) + CLASSIC | FLAG_EXPECTED_FAIL, +#else CLASSIC, +#endif { 0xfa, 0xfb, 0xfc, 0xfd, }, { { 4, 0xababab83 } }, .fill_helper = bpf_fill_maxinsns13, + .expected_errcode = -ENOTSUPP, }, { "BPF_MAXINSNS: ld_abs+get_processor_id", { }, +#if defined(CONFIG_BPF_JIT_ALWAYS_ON) && defined(CONFIG_S390) + CLASSIC | FLAG_EXPECTED_FAIL, +#else CLASSIC, +#endif { }, { { 1, 0xbee } }, .fill_helper = bpf_fill_ld_abs_get_processor_id, + .expected_errcode = -ENOTSUPP, }, /* * LD_IND / LD_ABS on fragmented SKBs -- cgit v1.2.3 From 9544bc5347207a68eb308cc8aaaed6c3a687cabd Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Fri, 29 Jun 2018 08:48:06 -0600 Subject: sg: remove ->sg_magic member This was introduced more than a decade ago when sg chaining was added, but we never really caught anything with it. The scatterlist entry size can be critical, since drivers allocate it, so remove the magic member. Recently it's been triggering allocation stalls and failures in NVMe. Tested-by: Jordan Glover Acked-by: Christoph Hellwig Signed-off-by: Jens Axboe --- drivers/gpu/drm/i915/i915_drv.h | 3 --- include/linux/scatterlist.h | 18 ------------------ lib/scatterlist.c | 6 ------ tools/virtio/linux/scatterlist.h | 18 ------------------ 4 files changed, 45 deletions(-) (limited to 'lib') diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 34c125e2d90c..9180f67746b4 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2238,9 +2238,6 @@ static inline struct scatterlist *____sg_next(struct scatterlist *sg) **/ static inline struct scatterlist *__sg_next(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif return sg_is_last(sg) ? NULL : ____sg_next(sg); } diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 51f52020ad5f..093aa57120b0 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -9,9 +9,6 @@ #include struct scatterlist { -#ifdef CONFIG_DEBUG_SG - unsigned long sg_magic; -#endif unsigned long page_link; unsigned int offset; unsigned int length; @@ -64,7 +61,6 @@ struct sg_table { * */ -#define SG_MAGIC 0x87654321 #define SG_CHAIN 0x01UL #define SG_END 0x02UL @@ -98,7 +94,6 @@ static inline void sg_assign_page(struct scatterlist *sg, struct page *page) */ BUG_ON((unsigned long) page & (SG_CHAIN | SG_END)); #ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); BUG_ON(sg_is_chain(sg)); #endif sg->page_link = page_link | (unsigned long) page; @@ -129,7 +124,6 @@ static inline void sg_set_page(struct scatterlist *sg, struct page *page, static inline struct page *sg_page(struct scatterlist *sg) { #ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); BUG_ON(sg_is_chain(sg)); #endif return (struct page *)((sg)->page_link & ~(SG_CHAIN | SG_END)); @@ -195,9 +189,6 @@ static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents, **/ static inline void sg_mark_end(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif /* * Set termination bit, clear potential chain bit */ @@ -215,9 +206,6 @@ static inline void sg_mark_end(struct scatterlist *sg) **/ static inline void sg_unmark_end(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif sg->page_link &= ~SG_END; } @@ -260,12 +248,6 @@ static inline void *sg_virt(struct scatterlist *sg) static inline void sg_init_marker(struct scatterlist *sgl, unsigned int nents) { -#ifdef CONFIG_DEBUG_SG - unsigned int i; - - for (i = 0; i < nents; i++) - sgl[i].sg_magic = SG_MAGIC; -#endif sg_mark_end(&sgl[nents - 1]); } diff --git a/lib/scatterlist.c b/lib/scatterlist.c index 06dad7a072fd..d4ae67d6cd1e 100644 --- a/lib/scatterlist.c +++ b/lib/scatterlist.c @@ -24,9 +24,6 @@ **/ struct scatterlist *sg_next(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif if (sg_is_last(sg)) return NULL; @@ -111,10 +108,7 @@ struct scatterlist *sg_last(struct scatterlist *sgl, unsigned int nents) for_each_sg(sgl, sg, nents, i) ret = sg; -#ifdef CONFIG_DEBUG_SG - BUG_ON(sgl[0].sg_magic != SG_MAGIC); BUG_ON(!sg_is_last(ret)); -#endif return ret; } EXPORT_SYMBOL(sg_last); diff --git a/tools/virtio/linux/scatterlist.h b/tools/virtio/linux/scatterlist.h index 9a45f90e2d08..369ee308b668 100644 --- a/tools/virtio/linux/scatterlist.h +++ b/tools/virtio/linux/scatterlist.h @@ -36,7 +36,6 @@ static inline void sg_assign_page(struct scatterlist *sg, struct page *page) */ BUG_ON((unsigned long) page & 0x03); #ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); BUG_ON(sg_is_chain(sg)); #endif sg->page_link = page_link | (unsigned long) page; @@ -67,7 +66,6 @@ static inline void sg_set_page(struct scatterlist *sg, struct page *page, static inline struct page *sg_page(struct scatterlist *sg) { #ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); BUG_ON(sg_is_chain(sg)); #endif return (struct page *)((sg)->page_link & ~0x3); @@ -116,9 +114,6 @@ static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents, **/ static inline void sg_mark_end(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif /* * Set termination bit, clear potential chain bit */ @@ -136,17 +131,11 @@ static inline void sg_mark_end(struct scatterlist *sg) **/ static inline void sg_unmark_end(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif sg->page_link &= ~0x02; } static inline struct scatterlist *sg_next(struct scatterlist *sg) { -#ifdef CONFIG_DEBUG_SG - BUG_ON(sg->sg_magic != SG_MAGIC); -#endif if (sg_is_last(sg)) return NULL; @@ -160,13 +149,6 @@ static inline struct scatterlist *sg_next(struct scatterlist *sg) static inline void sg_init_table(struct scatterlist *sgl, unsigned int nents) { memset(sgl, 0, sizeof(*sgl) * nents); -#ifdef CONFIG_DEBUG_SG - { - unsigned int i; - for (i = 0; i < nents; i++) - sgl[i].sg_magic = SG_MAGIC; - } -#endif sg_mark_end(&sgl[nents - 1]); } -- cgit v1.2.3