From cba3176e88fa134ece3ae1cf7e35dab9972d7853 Mon Sep 17 00:00:00 2001
From: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>
Date: Wed, 7 Dec 2011 22:30:09 +0100
Subject: [PATCH] PM / Sleep: Recommend [un]lock_system_sleep() over using
 pm_mutex directly

Update the documentation to explain the perils of directly using
mutex_[un]lock(&pm_mutex) and recommend the usage of the safe
APIs [un]lock_system_sleep() instead.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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