static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req)
{
	WARN_ON(req->buf == NULL);
	kfree(req->buf);
	req->buf = NULL;
	usb_ep_free_request(ep, req);
}
static inline void free_ep_req(struct usb_ep *ep, struct usb_request *req)
{
	WARN_ON(req->buf == NULL);
	kfree(req->buf);
	req->buf = NULL;
	usb_ep_free_request(ep, req);
}