INTR_DISABLED
err = hv_vintr_setenabled(devhandle, devino, INTR_DISABLED);
cbus_intr_setenabled(sc->sc_bustag, sc->sc_tx_ino, INTR_DISABLED);
cbus_intr_setenabled(sc->sc_bustag, sc->sc_rx_ino, INTR_DISABLED);