Commit d97fe100 authored by Ulf Hansson's avatar Ulf Hansson Committed by Rafael J. Wysocki
Browse files

PM: domains: Return early if perf state is already set for the device 



When dev_pm_genpd_set_performance_state() gets called to set a new
performance state for the device, let's take a quicker path by doing an
early return, if it turns out that the new state is already set for the
device.

Suggested-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 0eef091d

drivers/base/power/domain.c

+3 −0
Original line number Diff line number Diff line
@@ -387,6 +387,9 @@ static int genpd_set_performance_state(struct device *dev, unsigned int state) 
	int ret;



	prev_state = gpd_data->performance_state;

	if (prev_state == state)

		return 0;



	gpd_data->performance_state = state;

	state = _genpd_reeval_performance_state(genpd, state);