cpufreq: Return error if ->get() failed in cpufreq_update_policy()
cpufreq_update_policy() calls cpufreq_driver->get() to get current frequency of a CPU and it is not supposed to fail or return zero. Return error in case that happens. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -2139,6 +2139,11 @@ int cpufreq_update_policy(unsigned int cpu)
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*/
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if (cpufreq_driver->get) {
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new_policy.cur = cpufreq_driver->get(cpu);
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if (WARN_ON(!new_policy.cur)) {
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ret = -EIO;
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goto no_policy;
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}
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if (!policy->cur) {
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pr_debug("Driver did not initialize current freq");
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policy->cur = new_policy.cur;
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