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cpufreq: powernv: del_timer_sync when global and local pstate are equal 

When global and local pstate are equal in a powernv_target_index() call,
we don't queue a timer. But we may have timer already queued for future.
This could cause the timer to fire one additional time for no use.

Signed-off-by: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
hifive-unleashed-5.1
Akshay Adiga 2016-05-03 20:49:36 +05:30 committed by Rafael J. Wysocki
parent 1fd3ff2874
commit 0bc10b93f2
1 changed files with 2 additions and 0 deletions
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2
drivers/cpufreq/powernv-cpufreq.c
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@ -647,6 +647,8 @@ static int powernv_cpufreq_target_index(struct cpufreq_policy *policy,
*/
if (gpstate_id != freq_data.pstate_id)
queue_gpstate_timer(gpstates);
else
del_timer_sync(&gpstates->timer);
gpstates_done:
freq_data.gpstate_id = gpstate_id;