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