mpu_intr
int mpu_intr(void *);
mpu_intr, &sc->sc_mpu, sc->sc_dev.dv_xname);
mpu_intr(&sc->sc_mpu_sc);
mpu_intr(sc->sc_mpudev);
mpu_intr(sc->sc_mpudev);
mpu_intr(sc->sc_mpu_dev);
return mpu_intr(sc->sc_mpu);