--- x/drivers/media/mc/mc-device.c
+++ y/drivers/media/mc/mc-device.c
@@ -728,6 +728,8 @@ void media_device_cleanup(struct media_d
 	media_graph_walk_cleanup(&mdev->pm_count_walk);
 	mutex_destroy(&mdev->graph_mutex);
 	mutex_destroy(&mdev->req_queue_mutex);
+	while (atomic_read(&mdev->num_requests))
+		schedule_timeout_idle(HZ/20);
 }
 EXPORT_SYMBOL_GPL(media_device_cleanup);