usbf_ep0_queue
ret = usbf_ep0_queue(ep, req, gfp_flags);
usbf_ep0_queue(&udc->ep[0], &udc->setup_reply, GFP_ATOMIC);
usbf_ep0_queue(&udc->ep[0], &udc->setup_reply, GFP_ATOMIC);
usbf_ep0_queue(ep0, &udc->setup_reply, GFP_ATOMIC);
usbf_ep0_queue(ep0, &udc->setup_reply,