tree d9a0d584495e5b6ee764b6d740cece46f3b5ed1d
parent 023d3779145ec6b7a0f38f19672a347b92feb74e
author Rafael J. Wysocki <rjw@sisk.pl> 1296468410 +0100
committer Rafael J. Wysocki <rjw@sisk.pl> 1300146193 +0100

PM / Wakeup: Make pm_save_wakeup_count() work as documented

According to Documentation/ABI/testing/sysfs-power, the
/sys/power/wakeup_count interface should only make the kernel react
to wakeup events during suspend if the last write to it has been
successful.  However, if /sys/power/wakeup_count is written to two
times in a row, where the first write is successful and the second
is not, the kernel will still react to wakeup events during suspend
due to a bug in pm_save_wakeup_count().

Fix the bug by making pm_save_wakeup_count() clear
events_check_enabled unconditionally before checking if there are
any new wakeup events registered since the previous read from
/sys/power/wakeup_count.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>