PPBUS_INTR
err = lpt_request_ppbus(lpt, PPBUS_WAIT|PPBUS_INTR);
err = lpt_release_ppbus(sc, PPBUS_WAIT|PPBUS_INTR);
PPBUS_INTR);
case PPBUS_INTR:
bool intr = (how & PPBUS_INTR) != 0;
bool intr = (how & PPBUS_INTR) != 0;
return ppbus_request_bus(sc->sc_dev, dev, PPBUS_WAIT|PPBUS_INTR, (hz));
(void) ppbus_release_bus(sc->sc_dev, dev, PPBUS_WAIT|PPBUS_INTR, (hz));
PPBUS_WAIT|PPBUS_INTR, 0))