- /* temperatures not supported on 570, G4x, R30, R31, R32 */
- thermal_tmp_supported = acpi_evalf(ec_handle, NULL, "TMP7", "qv");
-
- /* 600e/x, 770e, 770x */
- thermal_updt_supported = acpi_evalf(ec_handle, NULL, "UPDT", "qv");
+ if (acpi_evalf(ec_handle, NULL, "TMP7", "qv")) {
+ if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) {
+ /* 600e/x, 770e, 770x */
+ thermal_read_mode = IBMACPI_THERMAL_ACPI_UPDT;
+ } else {
+ /* Standard ACPI TMPx access, max 8 sensors */
+ thermal_read_mode = IBMACPI_THERMAL_ACPI_TMP07;
+ }
+ } else {
+ /* temperatures not supported on 570, G4x, R30, R31, R32 */
+ thermal_read_mode = IBMACPI_THERMAL_NONE;
+ }