tree ed7ce64394d3adcca0974b359b8a2166c360fb9d
parent 3364d113c8209feee425b0f8a770b51e6132c43f
author Ales Novak <alnovak@suse.cz> 1402090539 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1402096086 -0700

drivers/rtc/interface.c: fix infinite loop in initializing the alarm

In __rtc_read_alarm(), if the alarm time retrieved by
rtc_read_alarm_internal() from the device contains invalid values (e.g.
month=2,mday=31) and the year not set (=-1), the initialization will
loop infinitely because the year-fixing loop expects the time being
invalid due to leap year.

Fix reduces the loop to the leap years and adds final validity check.

Signed-off-by: Ales Novak <alnovak@suse.cz>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Reported-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>