SMSC_ENDPT_INTR
if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL)
usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]);
sc->sc_ep[SMSC_ENDPT_INTR] != NULL)
if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) {
err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_INTR]);
sc->sc_ep[SMSC_ENDPT_INTR] = NULL;
sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress;