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