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ACPI: thermal: Execute _SCP before reading trip points

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As specified in section 11.4.13 of the ACPI specification the
operating system is required to evaluate the _ACx and _PSV objects
after executing the _SCP control method.

Move the execution of the _SCP control method before the invocation
of acpi_thermal_get_trip_points() to avoid missing updates to the
_ACx and _PSV objects.

Fixes: b09872a652 ("ACPI: thermal: Fold acpi_thermal_get_info() into its caller")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20250410165456.4173-3-W_Armin@gmx.de
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Armin Wolf 2025-04-10 18:54:55 +02:00 committed by Rafael J. Wysocki
parent 8cf4fdac9b
commit 3f7cd28ae3
1 changed files with 6 additions and 4 deletions
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10
drivers/acpi/thermal.c
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@ -803,6 +803,12 @@ static int acpi_thermal_add(struct acpi_device *device)
acpi_thermal_aml_dependency_fix(tz);
/*
* Set the cooling mode [_SCP] to active cooling. This needs to happen before
* we retrieve the trip point values.
*/
acpi_execute_simple_method(tz->device->handle, "_SCP", ACPI_THERMAL_MODE_ACTIVE);
/* Get trip points [_ACi, _PSV, etc.] (required). */
acpi_thermal_get_trip_points(tz);
@ -814,10 +820,6 @@ static int acpi_thermal_add(struct acpi_device *device)
if (result)
goto free_memory;
/* Set the cooling mode [_SCP] to active cooling. */
acpi_execute_simple_method(tz->device->handle, "_SCP",
ACPI_THERMAL_MODE_ACTIVE);
/* Determine the default polling frequency [_TZP]. */
if (tzp)
tz->polling_frequency = tzp;