Commit b45bae36 authored Jul 16, 2012 by Paul Fox Committed by Rafael J. Wysocki Jul 17, 2012

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>

parent 4f31f5b1

drivers/rtc/rtc-cmos.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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);

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