alarmtimer: Ensure RTC module is not unloaded
authorAlexandre Belloni <alexandre.belloni@free-electrons.com>
Sun, 20 Aug 2017 22:01:46 +0000 (00:01 +0200)
committerThomas Gleixner <tglx@linutronix.de>
Thu, 31 Aug 2017 19:36:45 +0000 (21:36 +0200)
commit51218298a25e6942957c5595f2abf130d47d5df9
tree235c2bc0f868679108179df74bb2b660719bda87
parentbc30658eff39c5bb562174fcf93618ab6a7afe88
alarmtimer: Ensure RTC module is not unloaded

When registering the rtc device to be used to handle alarm timers,
get_device is used to ensure the device doesn't go away but the module can
still be unloaded.

Call try_module_get to ensure the rtc driver will not go away.

Reported-and-tested-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <john.stultz@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Link: http://lkml.kernel.org/r/20170820220146.30969-1-alexandre.belloni@free-electrons.com
kernel/time/alarmtimer.c