V4L/DVB: v4l2-dev: remove unnecessary lock around atomic clear_bit

No need to lock when unregistering the device: clear_bit is already an atomic operation. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
git-mirror · May 19, 2010 · dd0daf2 · dd0daf2
1 parent 0eed42e
commit dd0daf2
Showing 1 changed file with 0 additions and 2 deletions.
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
@@ -600,9 +600,7 @@ void video_unregister_device(struct video_device *vdev)
 	if (!vdev || !video_is_registered(vdev))
 		return;
 
-	mutex_lock(&videodev_lock);
 	clear_bit(V4L2_FL_REGISTERED, &vdev->flags);
-	mutex_unlock(&videodev_lock);
 	device_unregister(&vdev->dev);
 }
 EXPORT_SYMBOL(video_unregister_device);