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cpufreq: Only call cpufreq_out_of_sync() for driver that implement cpufreq_driver.target()

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Scaling drivers that implement cpufreq_driver.setpolicy() have
internal governors that do not signal changes via
cpufreq_notify_transition() so the frequncy in the policy will almost
certainly be different than the current frequncy.  Only call
cpufreq_out_of_sync() when the underlying driver implements
cpufreq_driver.target()

Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Dirk Brandewie 2013-02-06 09:02:09 -08:00 committed by Rafael J. Wysocki
parent 9e21ba8bd8
commit f6b0515b07
1 changed files with 1 additions and 1 deletions
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2
drivers/cpufreq/cpufreq.c
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@ -1770,7 +1770,7 @@ int cpufreq_update_policy(unsigned int cpu)
pr_debug("Driver did not initialize current freq"); pr_debug("Driver did not initialize current freq");
data->cur = policy.cur; data->cur = policy.cur;
} else { } else {
if (data->cur != policy.cur) if (data->cur != policy.cur && cpufreq_driver->target)
cpufreq_out_of_sync(cpu, data->cur, cpufreq_out_of_sync(cpu, data->cur,
policy.cur); policy.cur);
} }