--- y/drivers/media/usb/em28xx/em28xx-cards.c
+++ x/drivers/media/usb/em28xx/em28xx-cards.c
@@ -4039,6 +4039,7 @@ static int em28xx_usb_probe(struct usb_i
 
 	if (dev->board.has_dual_ts && em28xx_duplicate_dev(dev) == 0) {
 		kref_init(&dev->dev_next->ref);
+		kref_get(&dev->dev_next->ref);
 
 		dev->dev_next->ts = SECONDARY_TS;
 		dev->dev_next->alt   = -1;