| Message ID | 20210603093438.138705-3-ulf.hansson@linaro.org |
|---|---|
| State | Accepted |
| Commit | d97fe100ee0b36c5dd8013ffd70fe8fcdcabff2b |
| Headers | show |
| Series | PM: domains: Avoid boilerplate code for DVFS in subsystem/drivers | expand |
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 5c476ed1c6c9..ef25a5b18587 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -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);
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: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- Changes in v2: - New patch. --- drivers/base/power/domain.c | 3 +++ 1 file changed, 3 insertions(+) -- 2.25.1