PM: sleep: call devfreq suspend/resume (6e863844) · Commits · 戴 / test

Devfreq framework supports suspend of its devices. Call the the devfreq interface and allow devfreq devices preserve/restore their states during suspend/resume. Suggested-by:

Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Reviewed-by:

Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by:

Lukasz Luba <l.luba@partner.samsung.com> Signed-off-by:

Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/base/power/main.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -32,6 +32,7 @@
		#include <trace/events/power.h>
		#include <linux/cpufreq.h>
		#include <linux/cpuidle.h>
		#include <linux/devfreq.h>
		#include <linux/timer.h>

		#include "../base.h"
		@@ -1078,6 +1079,7 @@ void dpm_resume(pm_message_t state)
		dpm_show_time(starttime, state, 0, NULL);

		cpufreq_resume();
		devfreq_resume();
		trace_suspend_resume(TPS("dpm_resume"), state.event, false);
		}

		@@ -1852,6 +1854,7 @@ int dpm_suspend(pm_message_t state)
		trace_suspend_resume(TPS("dpm_suspend"), state.event, true);
		might_sleep();

		devfreq_suspend();
		cpufreq_suspend();

		mutex_lock(&dpm_list_mtx);

Admin message