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: b09872a652d3 ("ACPI: thermal: Fold acpi_thermal_get_info() into its caller")
Signed-off-by: Armin Wolf <W_Armin@xxxxxx>
---
drivers/acpi/thermal.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 0c874186f8ae..5c2defe55898 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -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;
--
2.39.5
