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Commit f97e937d authored by Tim Murray's avatar Tim Murray Committed by Razziell
Browse files

cpuidle: don't disable cpuidle when entering suspend 

cpuidle was disabled while entering suspend as part of commit
8651f97b in order to work around some
ACPI bugs. However, there's no reason to do this on modern
platforms. Leaving cpuidle enabled can result in improved power
consumption if dpm_resume_noirq runs for a significant time.

Change-Id: Ie182785b176f448698c0264eba554d1e315e8a06
parent 29684f14

drivers/base/power/main.c

+0 −3
Original line number Diff line number Diff line
@@ -30,7 +30,6 @@ 
#include <linux/suspend.h>

#include <trace/events/power.h>

#include <linux/cpufreq.h>

#include <linux/cpuidle.h>

#include <linux/timer.h>

#include <linux/wakeup_reason.h>
@@ -600,7 +599,6 @@ void dpm_resume_noirq(pm_message_t state) 
	async_synchronize_full();

	dpm_show_time(starttime, state, "noirq");

	resume_device_irqs();

	cpuidle_resume();

	trace_suspend_resume(TPS("dpm_resume_noirq"), state.event, false);

}
@@ -1112,7 +1110,6 @@ int dpm_suspend_noirq(pm_message_t state) 
	int error = 0;



	trace_suspend_resume(TPS("dpm_suspend_noirq"), state.event, true);

	cpuidle_pause();

	suspend_device_irqs();

	mutex_lock(&dpm_list_mtx);

	pm_transition = state;