diff --git a/sound/usb/card.h b/sound/usb/card.h
index 2b9fffff23b6..bcb5267a02e8 100644
--- a/sound/usb/card.h
+++ b/sound/usb/card.h
@@ -115,8 +115,6 @@ struct snd_usb_substream {
 
 	unsigned int hwptr_done;	/* processed byte position in the buffer */
 	unsigned int transfer_done;		/* processed frames since last period update */
-	unsigned long active_mask;	/* bitmask of active urbs */
-	unsigned long unlink_mask;	/* bitmask of unlinked urbs */
 
 	/* data and sync endpoints for this stream */
 	unsigned int ep_num;		/* the endpoint number */