diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
index e82c5236482d..eb7e57c4a7fd 100644
--- a/sound/usb/usx2y/us122l.c
+++ b/sound/usb/usx2y/us122l.c
@@ -636,10 +636,7 @@ static void snd_us122l_disconnect(struct usb_interface *intf)
 	usb_put_intf(usb_ifnum_to_if(us122l->dev, 1));
 	usb_put_dev(us122l->dev);
 
-	while (atomic_read(&us122l->mmap_count))
-		msleep(500);
-
-	snd_card_free(card);
+	snd_card_free_when_closed(card);
 }
 
 static int snd_us122l_suspend(struct usb_interface *intf, pm_message_t message)