Commit 5a1c0228 authored Oct 31, 2012 by Viresh Kumar Committed by Rafael J. Wysocki Nov 15, 2012

cpufreq: Avoid calling cpufreq driver's target() routine if target_freq == policy->cur



Avoid calling cpufreq driver's target() routine if new frequency is same as
policies current frequency.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent da584455

drivers/cpufreq/cpufreq.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1476,6 +1476,10 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy,

		pr_debug("target for CPU %u: %u kHz, relation %u\n", policy->cpu,
		target_freq, relation);

		if (target_freq == policy->cur)
		return 0;

		if (cpu_online(policy->cpu) && cpufreq_driver->target)
		retval = cpufreq_driver->target(policy, target_freq, relation);