tree 2a6cd29d6d386e82a835625b76ccdb25e8c611c6
parent 9054f1811e79bf07fa8edd3896682283c0b57c1c
author Eduardo Valentin <edubezval@gmail.com> 1464652348 -0700
committer Eduardo Valentin <edubezval@gmail.com> 1473080219 -0700

thermal: sysfs: add comments describing locking strategy

The locking strategy of sysfs entries in thermal subsystem
is to hold a lock to serialize access to struct thermal_zone_device
and struct thermal_cooling_device data. Besides, the respective
locks will also be held if calls to ops need to be done to fetch
data or to trigger driver actions.

The exception of the locking strategy are functions called
during initialization of cdev and tz.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>