tree fc0252ddaa4eada3cb9150607bbddf80bfffa68d
parent 95c60c1c8f51521e7f2174fd0fff4dae6d522b83
author Akinobu Mita <akinobu.mita@gmail.com> 1457278073 +0900
committer Alexandre Belloni <alexandre.belloni@free-electrons.com> 1457971718 +0100

rtc: ds3232: use rtc->ops_lock to protect alarm operations

ds3232->mutex is used to protect for alarm operations which
need to access status and control registers.

But we can use rtc->ops_lock instead.  rtc->ops_lock is held when most
of rtc_class_ops methods are called, so we only need to explicitly
acquire it from irq handler in order to protect form concurrent
accesses.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>