| From | Juri Lelli <> | Subject | [RFC PATCH 11/19] cpufreq: assert policy->rwsem is held in __cpufreq_governor | Date | Mon, 11 Jan 2016 17:35:52 +0000 |
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__cpufreq_governor works on policy, so policy->rwsem has to be held. Add assertion for such condition.
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Juri Lelli <juri.lelli@arm.com> --- drivers/cpufreq/cpufreq.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index f1f9fbc..e7fc5c9 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1950,6 +1950,9 @@ static int __cpufreq_governor(struct cpufreq_policy *policy, /* Don't start any governor operations if we are entering suspend */ if (cpufreq_suspended) return 0; + + lockdep_assert_held(&policy->rwsem); + /* * Governor might not be initiated here if ACPI _PPC changed * notification happened, so check it. -- 2.2.2
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