MXM_WMMX_GUID
MODULE_ALIAS("wmi:"MXM_WMMX_GUID);
status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input, NULL);
status = wmi_evaluate_method(MXM_WMMX_GUID, 0x0, adapter, &input, NULL);
guid_valid = wmi_has_guid(MXM_WMMX_GUID);