LWMI_SUPP_GET
bool extra = cd00->supported & ~(LWMI_SUPP_GET | LWMI_SUPP_SET | LWMI_SUPP_VALID);
bool get = cd00->supported & LWMI_SUPP_GET;
visible = priv->fan_info[channel].supported & LWMI_SUPP_GET;
return (ret & LWMI_SUPP_VALID) && (ret & LWMI_SUPP_GET);