Commit 9e21ba8b authored Feb 06, 2013 by Dirk Brandewie Committed by Rafael J. Wysocki Feb 09, 2013

cpufreq: Retrieve current frequency from scaling drivers with internal governors



Scaling drivers that implement the cpufreq_driver.setpolicy() versus
the cpufreq_driver.target() interface do not set policy->cur.

Normally policy->cur is set during the call to cpufreq_driver.target()
when the frequnecy request is made by the governor.

If the scaling driver implements cpufreq_driver.setpolicy() and
cpufreq_driver.get() interfaces use cpufreq_driver.get() to retrieve
the current frequency.

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

parent 2eaa3e2d

drivers/cpufreq/cpufreq.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -1156,9 +1156,13 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq,
		*/
		unsigned int cpufreq_quick_get(unsigned int cpu)
		{
		struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
		struct cpufreq_policy *policy;
		unsigned int ret_freq = 0;

		if (cpufreq_driver && cpufreq_driver->setpolicy && cpufreq_driver->get)
		return cpufreq_driver->get(cpu);

		policy = cpufreq_cpu_get(cpu);
		if (policy) {
		ret_freq = policy->cur;
		cpufreq_cpu_put(policy);