On 12/09/2023 20:35, Rafael J. Wysocki wrote:
From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Use the observation that the critical and hot trip points are never
updated by the ACPI thermal driver, because the flags passed from
acpi_thermal_notify() to acpi_thermal_trips_update() do not include
ACPI_TRIPS_CRITICAL or ACPI_TRIPS_HOT, to move the initialization
of those trip points directly into acpi_thermal_get_trip_points() and
reduce the size of __acpi_thermal_trips_update().
Also make the critical and hot trip points initialization code more
straightforward and drop the flags that are not needed any more.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
[ ... ]
+static void acpi_thermal_get_critical_trip(struct acpi_thermal *tz)
+{
+ unsigned long long tmp;
+ acpi_status status;
+
+ if (crt > 0) {
+ tmp = celsius_to_deci_kelvin(crt);
+ goto set;
+ }
+ if (crt == -1) {
+ acpi_handle_debug(tz->device->handle, "Critical threshold disabled\n");
+ goto fail;
+ }
+
+ status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL, &tmp);
+ if (ACPI_FAILURE(status)) {
+ acpi_handle_debug(tz->device->handle, "No critical threshold\n");
+ goto fail;
+ }
+ if (tmp <= 2732) {
+ /*
+ * Below zero (Celsius) values clearly aren't right for sure,
+ * so discard them as invalid.
+ */
+ pr_info(FW_BUG "Invalid critical threshold (%llu)\n", tmp);
+ goto fail;
+ }
+
+set:
+ tz->trips.critical.valid = true;
+ tz->trips.critical.temperature = tmp;
+ acpi_handle_debug(tz->device->handle, "Critical threshold [%lu]\n",
+ tz->trips.critical.temperature);
+ return;
+
+fail:
nit: 'notset' may be more adequate
+ tz->trips.critical.valid = false;
+ tz->trips.critical.temperature = THERMAL_TEMP_INVALID;
+}
Other than that,
Reviewed-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
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