diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c
index 6d4cffdbf47a0dd0ad73297f14b64f707f306f72..0186ae235113bb8f5c3ba84c4db9b85bacb4314f 100644
--- a/drivers/media/platform/rcar-vin/rcar-core.c
+++ b/drivers/media/platform/rcar-vin/rcar-core.c
@@ -349,12 +349,10 @@ static int rvin_group_parse_of(struct rvin_dev *vin, unsigned int port,
 
 static void rvin_group_notifier_cleanup(struct rvin_dev *vin)
 {
-	mutex_lock(&vin->group->lock);
 	if (&vin->v4l2_dev == vin->group->notifier.v4l2_dev) {
 		v4l2_async_nf_unregister(&vin->group->notifier);
 		v4l2_async_nf_cleanup(&vin->group->notifier);
 	}
-	mutex_unlock(&vin->group->lock);
 }
 
 static int rvin_group_notifier_init(struct rvin_dev *vin, unsigned int port,