diff options
Diffstat (limited to 'drivers/acpi/thermal.c')
| -rw-r--r-- | drivers/acpi/thermal.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 9063239e0b13..6a0329340b42 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -475,14 +475,14 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) break; } - if (flag & ACPI_TRIPS_DEVICES) { - memset(&devices, 0, sizeof(struct acpi_handle_list)); + if ((flag & ACPI_TRIPS_DEVICES) + && acpi_has_method(tz->device->handle, "_TZD")) { + memset(&devices, 0, sizeof(devices)); status = acpi_evaluate_reference(tz->device->handle, "_TZD", NULL, &devices); - if (memcmp(&tz->devices, &devices, - sizeof(struct acpi_handle_list))) { - memcpy(&tz->devices, &devices, - sizeof(struct acpi_handle_list)); + if (ACPI_SUCCESS(status) + && memcmp(&tz->devices, &devices, sizeof(devices))) { + tz->devices = devices; ACPI_THERMAL_TRIPS_EXCEPTION(flag, "device"); } } |