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Commit d7a9771c authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki
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cpufreq: use light-weight cpufreq_cpu_get_raw() in __cpufreq_add_dev() 



We just need to check if a 'policy' is already present for the cpu we are
adding. We don't need to take all the locks and do kobject usage updates. Use
the light-weight cpufreq_cpu_get_raw() routine instead.

Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 7f0c020a

drivers/cpufreq/cpufreq.c

+2 −4
Original line number Diff line number Diff line
@@ -1116,11 +1116,9 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif) 


	/* check whether a different CPU already registered this

	 * CPU because it is in the same boat. */

	policy = cpufreq_cpu_get(cpu);

	if (unlikely(policy)) {

		cpufreq_cpu_put(policy);

	policy = cpufreq_cpu_get_raw(cpu);

	if (unlikely(policy))

		return 0;

	}



	if (!down_read_trylock(&cpufreq_rwsem))

		return 0;