/* Returns 0 if success, error code on error  */
static int cdns3_req_ep0_set_isoch_delay(struct cdns3_device *priv_dev, struct usb_ctrlrequest *ctrl_req)
/* Returns 0 if success, error code on error  */
static int cdns3_req_ep0_set_isoch_delay(struct cdns3_device *priv_dev, struct usb_ctrlrequest *ctrl_req)
{
	if (ctrl_req->wIndex || ctrl_req->wLength)
		return -EINVAL;
	priv_dev->isoch_delay = ctrl_req->wValue;
	return 0;
}