hpcio_intr_establish
hpcio_intr_establish(hsc->hsc_hc, port, mode, comintr, sc);
return (hpcio_intr_establish(sc->sc_hc, port, intr_modes[mode],
hpcio_intr_establish(sc->sc_hc, port, mode, vrc4172gpio_intr, sc);
sc->sc_ih = hpcio_intr_establish(sc->sc_iochip, 1,
hpcio_intr_establish(sc->sc_hc, sc->sc_port,
sc->sc_ih = hpcio_intr_establish(sc->sc_hc, sc->sc_port,