THINKPAD_SENSOR_FANRPM
sc->sc_sens[THINKPAD_SENSOR_FANRPM].type = SENSOR_FANRPM;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens[THINKPAD_SENSOR_FANRPM]);
sc->sc_sens[THINKPAD_SENSOR_FANRPM].flags = SENSOR_FINVALID;
sc->sc_sens[THINKPAD_SENSOR_FANRPM].value = ((hi << 8L) + lo);
sc->sc_sens[THINKPAD_SENSOR_FANRPM].flags = 0;