UAQ_ENDPT_TX
sc->sc_ep[UAQ_ENDPT_TX]);
usbd_setup_xfer(c->uc_xfer, sc->sc_ep[UAQ_ENDPT_TX], c, c->uc_buf,
sc->sc_ed[UAQ_ENDPT_TX] = ed->bEndpointAddress;
(sc->sc_ed[UAQ_ENDPT_TX] == 0) ||
sc->sc_ed[UAQ_ENDPT_TX], sc->sc_ed[UAQ_ENDPT_INTR]);
if (sc->sc_ep[UAQ_ENDPT_TX] != NULL)
usbd_abort_pipe(sc->sc_ep[UAQ_ENDPT_TX]);
err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[UAQ_ENDPT_TX],
USBD_EXCLUSIVE_USE, &sc->sc_ep[UAQ_ENDPT_TX]);
if (sc->sc_ep[UAQ_ENDPT_TX] != NULL) {
err = usbd_close_pipe(sc->sc_ep[UAQ_ENDPT_TX]);
sc->sc_ep[UAQ_ENDPT_TX] = NULL;