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authorSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>2011-12-07 22:29:54 +0100
committerRafael J. Wysocki <rjw@sisk.pl>2011-12-08 23:22:29 +0100
commitbcda53faf5814c0c6025a0bd47108adfcbe9f199 (patch)
treea8768204a16b24436f33fac00c1bb4dcfb4fafd5 /kernel/power/suspend.c
parent9b6fc5dc879bc90f765db0e95eefcf123d0d06dd (diff)
PM / Sleep: Replace mutex_[un]lock(&pm_mutex) with [un]lock_system_sleep()
Using [un]lock_system_sleep() is safer than directly using mutex_[un]lock() on 'pm_mutex', since the latter could lead to freezing failures. Hence convert all the present users of mutex_[un]lock(&pm_mutex) to use these safe APIs instead. Suggested-by: Tejun Heo <tj@kernel.org> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Reviewed-by: Simon Horman <horms@verge.net.au> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'kernel/power/suspend.c')
-rw-r--r--kernel/power/suspend.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index d336b27d1104..4fd51beed879 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -42,9 +42,9 @@ static const struct platform_suspend_ops *suspend_ops;
*/
void suspend_set_ops(const struct platform_suspend_ops *ops)
{
- mutex_lock(&pm_mutex);
+ lock_system_sleep();
suspend_ops = ops;
- mutex_unlock(&pm_mutex);
+ unlock_system_sleep();
}
EXPORT_SYMBOL_GPL(suspend_set_ops);