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cpufreq: Detect spurious invocations of update_policy_cpu()
The function update_policy_cpu() is expected to be called when the policy->cpu of a cpufreq policy is to be changed: ie., the new CPU nominated to become the policy->cpu is different from the old one. Print a warning if it is invoked with new_cpu == old_cpu, since such an invocation might hint at a faulty logic in the caller. Suggested-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -969,7 +969,7 @@ static void cpufreq_policy_free(struct cpufreq_policy *policy)
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static void update_policy_cpu(struct cpufreq_policy *policy, unsigned int cpu)
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{
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if (cpu == policy->cpu)
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if (WARN_ON(cpu == policy->cpu))
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return;
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/*
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