U3G_INTR
if (bootverbose && sc->sc_xfer[nports][U3G_INTR]) {
usbd_transfer_start(sc->sc_xfer[ucom->sc_subunit][U3G_INTR]);
usbd_transfer_stop(sc->sc_xfer[ucom->sc_subunit][U3G_INTR]);
[U3G_INTR] = {