linux/drivers/rtc, branch v2.6.19

[PATCH] drivers/rtc/rtc-rs5c372.c: fix a NULL dereference

2006-11-25T21:28:33Z

The correct order is: NULL check before dereference This was a guaranteed NULL dereference with debugging enabled since rs5c372_sysfs_show_osc() does actually pass NULL... Spotted by the Coverity checker. Signed-off-by: Adrian Bunk Acked-by: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] rtc class locking bugfixes

2006-11-25T21:28:33Z

I got a lockdep warning when running "rtctest" so I though it'd be good to see what was up. - The warning was for rtc->irq_task_lock, gotten from rtc_update_irq() by irq handlerss ... but in a handful of other cases, grabbed without blocking IRQs. - Some callers to rtc_update_irq() were not ensuring IRQs were blocked, yet the routine expects that; make sure all callers block IRQs. It would appear that RTC API tests haven't been part of anyone's kernel regression test suite recently, at least not with lockdep running. Signed-off-by: David Brownell Acked-by: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] rtc framework handles periodic irqs

2006-11-25T21:28:33Z

The RTC framework has an irq_set_freq() method that should be used to manage the periodic IRQ frequency, but the current ioctl logic doesn't know how to do that. This patch teaches it how. This means that drivers implementing irq_set_freq() will automatically support RTC_IRQP_{READ,SET} ioctls; that logic doesn't need duplication within the driver. [akpm@osdl.org: export rtc_irq_set_freq] Signed-off-by: David Brownell Acked-by: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] rtc: fix printk of 64-bit res on 32-bit platform

2006-10-17T15:18:47Z

With 64-bit resources on 32-bit platforms, the resource address might be larger than a void*. Fix printk to work regardless of resource size. Signed-off-by: Jeff Garzik Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] rtc-max6902: month conversion fix

2006-10-17T15:18:44Z

Fix October-only BCD-to-binary conversion bug: 0x08 -> 7 0x09 -> 8 0x10 -> 15 (!) 0x11 -> 19 Fixes http://bugzilla.kernel.org/show_bug.cgi?id=7361 Cc: Raphael Assenat Cc: Alessandro Zummo Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

sh: Updates for IRQ handler changes.

2006-10-06T06:31:16Z

Trivial fixes for build breakage introduced by IRQ handler changes. Signed-off-by: Paul Mundt

IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

2006-10-05T14:10:12Z

Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/configh

2006-10-04T16:59:57Z

* master.kernel.org:/pub/scm/linux/kernel/git/davej/configh: Remove all inclusions of Manually resolved trivial path conflicts due to removed files in the sound/oss/ subdirectory.

[PATCH] RTC: build fixes

2006-10-04T15:15:14Z

Fix obvious build breakage revealed by 'make allyesconfig' in current -git. Signed-off-by: Jeff Garzik Signed-off-by: Linus Torvalds

Remove all inclusions of

2006-10-04T07:38:54Z

kbuild explicitly includes this at build time. Signed-off-by: Dave Jones