--- zzzz-none-000/linux-3.10.107/drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c 2021-02-04 17:41:59.000000000 +0000 @@ -26,7 +26,7 @@ { int ret, actual_length; - if (!d || !wbuf || !wlen || !d->props->generic_bulk_ctrl_endpoint || + if (!wbuf || !wlen || !d->props->generic_bulk_ctrl_endpoint || !d->props->generic_bulk_ctrl_endpoint_response) { dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, -EINVAL); return -EINVAL;