--- x/drivers/usb/class/usbtmc.c
+++ y/drivers/usb/class/usbtmc.c
@@ -2365,6 +2365,7 @@ static void usbtmc_free_int(struct usbtm
 	if (!data->iin_ep_present || !data->iin_urb)
 		return;
 	usb_kill_urb(data->iin_urb);
+	usb_kill_urb(data->iin_urb);
 	kfree(data->iin_buffer);
 	data->iin_buffer = NULL;
 	usb_free_urb(data->iin_urb);