--- zzzz-none-000/linux-3.10.107/drivers/media/usb/gspca/t613.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/media/usb/gspca/t613.c	2021-02-04 17:41:59.000000000 +0000
@@ -837,7 +837,7 @@
 			u8 *data,			/* isoc packet */
 			int len)			/* iso packet length */
 {
-	struct sd *sd = (struct sd *) gspca_dev;
+	struct sd *sd __maybe_unused = (struct sd *) gspca_dev;
 	int pkt_type;
 
 	if (data[0] == 0x5a) {