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Thermal control fix for 6.10-rc6

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Replace an earlier fix for a recent regression in the Step-Wise thermal
 governor that was not effective in all of the relevant cases (Rafael
 Wysocki).
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Merge tag 'thermal-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control fix from Rafael Wysocki:
 "Replace an earlier fix for a recent regression in the Step-Wise
  thermal governor that was not effective in all of the relevant cases
  (Rafael Wysocki)"

* tag 'thermal-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: gov_step_wise: Go straight to instance->lower when mitigation is over
This commit is contained in:
Linus Torvalds 2024-06-27 12:32:56 -07:00
commit 92572d2c08
1 changed files with 5 additions and 18 deletions
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23
drivers/thermal/gov_step_wise.c
View File

@ -55,7 +55,11 @@ static unsigned long get_target_state(struct thermal_instance *instance,
if (cur_state <= instance->lower)
return THERMAL_NO_TARGET;
return clamp(cur_state - 1, instance->lower, instance->upper);
/*
* If 'throttle' is false, no mitigation is necessary, so
* request the lower state for this instance.
*/
return instance->lower;
}
return instance->target;
@ -93,23 +97,6 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz,
if (instance->initialized && old_target == instance->target)
continue;
if (trip->type == THERMAL_TRIP_PASSIVE) {
/*
* If the target state for this thermal instance
* changes from THERMAL_NO_TARGET to something else,
* ensure that the zone temperature will be updated
* (assuming enabled passive cooling) until it becomes
* THERMAL_NO_TARGET again, or the cooling device may
* not be reset to its initial state.
*/
if (old_target == THERMAL_NO_TARGET &&
instance->target != THERMAL_NO_TARGET)
tz->passive++;
else if (old_target != THERMAL_NO_TARGET &&
instance->target == THERMAL_NO_TARGET)
tz->passive--;
}
instance->initialized = true;
mutex_lock(&instance->cdev->lock);