SMU_ZONE_DRIVEBAY
sc->sc_zones[SMU_ZONE_DRIVEBAY].name = "Drivebays";
sc->sc_zones[SMU_ZONE_DRIVEBAY].filter = is_drive_sensor;
sc->sc_zones[SMU_ZONE_DRIVEBAY].cookie = sc;
sc->sc_zones[SMU_ZONE_DRIVEBAY].get_rpm = smu_fan_get_rpm;
sc->sc_zones[SMU_ZONE_DRIVEBAY].set_rpm = smu_fan_set_rpm;
sc->sc_zones[SMU_ZONE_DRIVEBAY].Tmin = 30;
sc->sc_zones[SMU_ZONE_DRIVEBAY].Tmax = 50;
sc->sc_zones[SMU_ZONE_DRIVEBAY].nfans = 0;
z = &sc->sc_zones[SMU_ZONE_DRIVEBAY];