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Commit e15d8309 authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki
Browse files

cpufreq: ACPI: call CPUFREQ_POSTCHANGE notfier in error cases 



PRECHANGE and POSTCHANGE notifiers must be called in groups, i.e either both
should be called or both shouldn't be.

In case we have started PRECHANGE notifier and found an error, we
must call POSTCHANGE notifier with freqs.new = freqs.old to
guarantee that the sequence of calling notifiers is complete.

This patch fixes it.

Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 0956df9c

drivers/cpufreq/acpi-cpufreq.c

+4 −2
Original line number Diff line number Diff line
@@ -494,11 +494,13 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy, 
			pr_debug("acpi_cpufreq_target failed (%d)\n",

				policy->cpu);

			result = -EAGAIN;

			goto out;

			freqs.new = freqs.old;

		}

	}



	cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE);



	if (!result)

		perf->state = next_perf_state;



out: