1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/media/video/cx88/cx88-video.c b/drivers/media/video/cx88/cx88-video.c
index b993d42fe73c..d6d6d13a6a6b 100644
--- a/drivers/media/video/cx88/cx88-video.c
+++ b/drivers/media/video/cx88/cx88-video.c
@@ -926,8 +926,10 @@ static int video_release(struct file *file)
         file->private_data = NULL;
         kfree(fh);
 
+        mutex_lock(&dev->core->lock);
         if(atomic_dec_and_test(&dev->core->users))
                 call_all(dev->core, tuner, s_standby);
+        mutex_unlock(&dev->core->lock);
 
         return 0;
 }