rtc: Disable the alarm in the hardware
authorRabin Vincent <rabin.vincent@stericsson.com>
Tue, 22 Nov 2011 10:03:14 +0000 (11:03 +0100)
committerJohn Stultz <john.stultz@linaro.org>
Wed, 23 Nov 2011 03:25:43 +0000 (19:25 -0800)
commitc0afabd3d553c521e003779c127143ffde55a16f
tree5a4a93f244e2e9cbc87f24958de3e83397f978fb
parent27c9cd7e601632b3794e1c3344d37b86917ffb43
rtc: Disable the alarm in the hardware

Currently, the RTC code does not disable the alarm in the hardware.

This means that after a sequence such as the one below (the files are in the
RTC sysfs), the box will boot up after 2 minutes even though we've
asked for the alarm to be turned off.

# echo $((`cat since_epoch`)+120) > wakealarm
# echo 0 > wakealarm
# poweroff

Fix this by disabling the alarm when there are no timers to run.

Cc: stable@kernel.org
Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
drivers/rtc/interface.c