Commit 40f107b9 authored Jun 06, 2017 by Ram Chandrasekar Committed by Vikram Mulukutla Jun 07, 2017

drivers: thermal: step-wise: Optimize mitigation request evaluation

When evaluating a thermal instance which doesn't have any previous
mitigation request and if there is no new mitigation request step wise
algorithm will still evaluate the new request. This can cause the
algorithm to trigger a false mitigation, based on the temperature trend.

Avoid evaluating the mitigation request if there is no previous and new
mitigation request for a thermal instance.

Change-Id: I056aa0640bed5f296828bfceda44204d01e93064
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>

parent 7529b53b

drivers/thermal/step_wise.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -76,6 +76,14 @@ static unsigned long get_target_state(struct thermal_instance *instance,
		return next_target;
		}

		/*
		* If there is no new throttle request and if the thermal zone
		* wasn't requesting any previous mitigation, then skip the
		* evaluation.
		*/
		if (instance->target == THERMAL_NO_TARGET && !throttle)
		return next_target;

		switch (trend) {
		case THERMAL_TREND_RAISING:
		if (throttle) {