linux-stable.git/drivers/rtc/rtc-cmos.c, branch linux-3.8.y

drivers/rtc/rtc-cmos.c: don't disable hpet emulation on suspend

2013-05-08T03:08:22+00:00

commit e005715efaf674660ae59af83b13822567e3a758 upstream.

There's a bug where rtc alarms are ignored after the rtc cmos suspends
but before the system finishes suspend.  Since hpet emulation is
disabled and it still handles the interrupts, a wake event is never
registered which is done from the rtc layer.

This patch reverts commit d1b2efa83fbf ("rtc: disable hpet emulation on
suspend") which disabled hpet emulation.  To fix the problem mentioned
in that commit, hpet_rtc_timer_init() is called directly on resume.

Signed-off-by: Derek Basehore 
Cc: Maxim Levitsky 
Cc: "H. Peter Anvin" 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: "Rafael J. Wysocki" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

Drivers: rtc: remove __dev* attributes.

2013-01-03T23:57:02+00:00

CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton 
Cc: Alessandro Zummo 
Cc: Srinidhi Kasagar 
Cc: Linus Walleij 
Cc: Mike Frysinger 
Cc: Wan ZongShun 
Cc: Guan Xuetao 
Cc: Mark Brown 
Signed-off-by: Greg Kroah-Hartman

RTC: Avoid races between RTC alarm wakeup and suspend.

2012-08-08T18:49:16+00:00

If an RTC alarm fires just as suspend is happening, it is possible for
suspend to complete and the alarm to be missed.

To avoid the race, we must register the event with the PM core.

As the event is made visible to userspace through a thread which is
only scheduled by the interrupt, we need a pm_stay_awake/pm_relax
pair preventing suspend from the interrupt until the thread completes
its work.

This makes the pm_wakeup_event() call in cmos_interrupt unnecessary as
it provides suspend protection for all RTCs that use rtc_update_irq.

Signed-off-by: NeilBrown 
Signed-off-by: Rafael J. Wysocki

rtc-cmos: report wakeups from interrupt handler

2012-07-17T20:14:48+00:00

When suspending the system with an important RTC wake alarm active,
it is possible that the RTC alarm will expire before the system has
gone to sleep (e.g. short alarm timer, or an unusually long suspend
routine).

If this happens, the RTC alarm should trigger a wakeup event, possibly
aborting system suspend. This condition can be detected in the form
of an RTC alarm interrupt.

Signed-off-by: Paul Fox 
Signed-off-by: Daniel Drake 
Signed-off-by: Rafael J. Wysocki

rtc-cmos / PM: report wakeup event on ACPI RTC alarm

2012-05-29T19:20:23+00:00

When the ACPI-driven RTC alarm wakes the system, report it as a wakeup
event. This allows userspace to determine that the reason for system
wakeup was RTC alarm.

Signed-off-by: Daniel Drake 
Signed-off-by: Rafael J. Wysocki

drivers/rtc: remove IRQF_DISABLED

2012-03-23T23:58:39+00:00

Since commit e58aa3d2d0cc ("genirq: run irq handlers with interrupts
disabled") we run all interrupt handlers with interrupts disabled and we
even check and yell when an interrupt handler returns with interrupts
enabled - see commit b738a50a2026 ("genirq: warn when handler enables
interrupts").

So now this flag is a NOOP and can be removed.

Signed-off-by: Yong Zhang 
Acked-by: Linus Walleij 
Acked-by: Wan ZongShun 
Cc: Alessandro Zummo 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-cmos.c: fix broken NVRAM bank 2 writing

2012-01-11T00:30:52+00:00

Fix writing to NVRAM bank 2 in rtc-cmos driver.  It never worked since its
introduction in 2.6.28 because of a typo.

Signed-off-by: Ondrej Zary 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

treewide: Convert uses of struct resource to resource_size(ptr)

2011-06-10T12:55:36+00:00

Several fixes as well where the +1 was missing.

Done via coccinelle scripts like:

@@
struct resource *ptr;
@@

- ptr->end - ptr->start + 1
+ resource_size(ptr)

and some grep and typing.

Mostly uncompiled, no cross-compilers.

Signed-off-by: Joe Perches 
Signed-off-by: Jiri Kosina

Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-03-16T03:01:36+00:00

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
  x86: Clean up apic.c and apic.h
  x86: Remove superflous goal definition of tsc_sync
  x86: dt: Correct local apic documentation in device tree bindings
  x86: dt: Cleanup local apic setup
  x86: dt: Fix OLPC=y/INTEL_CE=n build
  rtc: cmos: Add OF bindings
  x86: ce4100: Use OF to setup devices
  x86: ioapic: Add OF bindings for IO_APIC
  x86: dtb: Add generic bus probe
  x86: dtb: Add support for PCI devices backed by dtb nodes
  x86: dtb: Add device tree support for HPET
  x86: dtb: Add early parsing of IO_APIC
  x86: dtb: Add irq domain abstraction
  x86: dtb: Add a device tree for CE4100
  x86: Add device tree support
  x86: e820: Remove conditional early mapping in parse_e820_ext
  x86: OLPC: Make OLPC=n build again
  x86: OLPC: Remove extra OLPC_OPENFIRMWARE_DT indirection
  x86: OLPC: Cleanup config maze completely
  x86: OLPC: Hide OLPC_OPENFIRMWARE config switch
  ...

Fix up conflicts in arch/x86/platform/ce4100/ce4100.c

RTC: Cleanup rtc_class_ops->update_irq_enable()

2011-03-09T19:23:37+00:00

Now that the generic code handles UIE mode irqs via periodic
alarm interrupts, no one calls the
rtc_class_ops->update_irq_enable() method anymore.

This patch removes the driver hooks and implementations of
update_irq_enable if no one else is calling it.

CC: Thomas Gleixner 
CC: Alessandro Zummo 
CC: Marcelo Roberto Jimenez 
CC: rtc-linux@googlegroups.com
Signed-off-by: John Stultz