Power Management: use mutexes instead of semaphores

The Power Management code uses semaphores as mutexes.  Use the mutex API
instead of the (binary) semaphores.

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c
index a2c64188d713..f6cfea496ea0 100644
--- a/drivers/base/power/resume.c
+++ b/drivers/base/power/resume.c
@@ -80,7 +80,7 @@ static int resume_device_early(struct device * dev)
  */
 void dpm_resume(void)
 {
-        down(&dpm_list_sem);
+        mutex_lock(&dpm_list_mtx);
         while(!list_empty(&dpm_off)) {
                 struct list_head * entry = dpm_off.next;
                 struct device * dev = to_device(entry);
@@ -88,13 +88,13 @@ void dpm_resume(void)
                 get_device(dev);
                 list_move_tail(entry, &dpm_active);
 
-                up(&dpm_list_sem);
+                mutex_unlock(&dpm_list_mtx);
                 if (!dev->power.prev_state.event)
                         resume_device(dev);
-                down(&dpm_list_sem);
+                mutex_lock(&dpm_list_mtx);
                 put_device(dev);
         }
-        up(&dpm_list_sem);
+        mutex_unlock(&dpm_list_mtx);
 }
 
 
@@ -108,9 +108,9 @@ void dpm_resume(void)
 void device_resume(void)
 {
         might_sleep();
-        down(&dpm_sem);
+        mutex_lock(&dpm_mtx);
         dpm_resume();
-        up(&dpm_sem);
+        mutex_unlock(&dpm_mtx);
 }
 
 EXPORT_SYMBOL_GPL(device_resume);