ecadc_set_fan_speed
ecadc_set_fan_speed(sc, sc->sc_channels[sc->sc_nchan].chan_num,
if (!ecadc_set_fan_speed(sc, chp->chan_num,
if (!ecadc_set_fan_speed(sc, chp->chan_num,
static int ecadc_set_fan_speed(struct ecadc_softc *, u_int8_t, u_int8_t);