diff options
| author | Paul Fox <pgf@laptop.org> | 2012-07-16 21:56:26 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-07-17 22:14:48 +0200 |
| commit | b45bae36b805287c76366c908de58b5c2c0d46b0 (patch) | |
| tree | 5074191c9cfe413e0c79b0cd5314adc5d4499081 /drivers/rtc | |
| parent | PM / crypto / ux500: Use struct dev_pm_ops for power management (diff) | |
| download | linux-b45bae36b805287c76366c908de58b5c2c0d46b0.tar.xz linux-b45bae36b805287c76366c908de58b5c2c0d46b0.zip | |
rtc-cmos: report wakeups from interrupt handler
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 <pgf@laptop.org>
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-cmos.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index 4267789ca995..132333d75408 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -568,6 +568,7 @@ static irqreturn_t cmos_interrupt(int irq, void *p) hpet_mask_rtc_irq_bit(RTC_AIE); CMOS_READ(RTC_INTR_FLAGS); + pm_wakeup_event(cmos_rtc.dev, 0); } spin_unlock(&rtc_lock); |