Merge tag 'asm-generic-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "This is mainly set of cleanups of asm-generic/io.h, resolving problems
  with inconsistent semantics of ioread64/iowrite64 that were causing
  runtime and build issues.

  The "GENERIC_IOMAP" version that switches between inb()/outb() and
  readb()/writeb() style accessors is now only used on architectures
  that have PC-style ISA devices that are not memory mapped (x86, uml,
  m68k-q40 and powerpc-powernv), while alpha and parisc use a more
  complicated variant and everything else just maps the ioread
  interfaces to plan MMIO (readb/writeb etc).

  In addition there are two small changes from Raag Jadav to simplify
  the asm-generic/io.h indirect inclusions and from Jann Horn to fix a
  corner case with read_word_at_a_time"

* tag 'asm-generic-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  rwonce: fix crash by removing READ_ONCE() for unaligned read
  rwonce: handle KCSAN like KASAN in read_word_at_a_time()
  m68k: coldfire: select PCI_IOMAP for PCI
  mips: export pci_iounmap()
  mips: fix PCI_IOBASE definition
  m68k/nommu: stop using GENERIC_IOMAP
  mips: drop GENERIC_IOMAP wrapper
  powerpc: asm/io.h: remove split ioread64/iowrite64 helpers
  parisc: stop using asm-generic/iomap.h
  sh: remove duplicate ioread/iowrite helpers
  alpha: stop using asm-generic/iomap.h
  io.h: drop unused headers
  drm/draw: include missing headers
  asm-generic/io.h: rework split ioread64/iowrite64 helpers

1 files changed, 17 insertions, 14 deletions

diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
index 65fe1e54c6da..fa3e4c246cda 100644
--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -10,10 +10,6 @@
 #include <asm/machvec.h>
 #include <asm/hwrpb.h>
 
-/* The generic header contains only prototypes.  Including it ensures that
-   the implementation we have here matches that interface.  */
-#include <asm-generic/iomap.h>
-
 /*
  * Virtual -> physical identity mapping starts at this offset
  */
@@ -276,13 +272,24 @@ extern void		__raw_writeq(u64 b, volatile void __iomem *addr);
 #define __raw_writel __raw_writel
 #define __raw_writeq __raw_writeq
 
-/*
- * Mapping from port numbers to __iomem space is pretty easy.
- */
+extern unsigned int ioread8(const void __iomem *);
+extern unsigned int ioread16(const void __iomem *);
+extern unsigned int ioread32(const void __iomem *);
+extern u64 ioread64(const void __iomem *);
+
+extern void iowrite8(u8, void __iomem *);
+extern void iowrite16(u16, void __iomem *);
+extern void iowrite32(u32, void __iomem *);
+extern void iowrite64(u64, void __iomem *);
+
+extern void ioread8_rep(const void __iomem *port, void *buf, unsigned long count);
+extern void ioread16_rep(const void __iomem *port, void *buf, unsigned long count);
+extern void ioread32_rep(const void __iomem *port, void *buf, unsigned long count);
+
+extern void iowrite8_rep(void __iomem *port, const void *buf, unsigned long count);
+extern void iowrite16_rep(void __iomem *port, const void *buf, unsigned long count);
+extern void iowrite32_rep(void __iomem *port, const void *buf, unsigned long count);
 
-/* These two have to be extern inline because of the extern prototype from
-   <asm-generic/iomap.h>.  It is not legal to mix "extern" and "static" for
-   the same declaration.  */
 extern inline void __iomem *ioport_map(unsigned long port, unsigned int size)
 {
 	return IO_CONCAT(__IO_PREFIX,ioportmap) (port);
@@ -629,10 +636,6 @@ extern void outsl (unsigned long port, const void *src, unsigned long count);
 #define RTC_PORT(x)	(0x70 + (x))
 #define RTC_ALWAYS_BCD	0
 
-/*
- * These get provided from <asm-generic/iomap.h> since alpha does not
- * select GENERIC_IOMAP.
- */
 #define ioread64 ioread64
 #define iowrite64 iowrite64
 #define ioread8_rep ioread8_rep