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cpufreq: governor: initialize/destroy timer_mutex with 'shared' 

timer_mutex is required to be initialized only while memory for 'shared'
is allocated and in a similar way it is required to be destroyed only
when memory for 'shared' is freed.

There is no need to do the same every time we start/stop the governor.
Move code to initialize/destroy timer_mutex to the relevant places.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar 2015-12-03 09:37:52 +05:30 committed by Rafael J. Wysocki
parent affde5d06a
commit 5e4500d8db
1 changed files with 3 additions and 3 deletions
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6
drivers/cpufreq/cpufreq_governor.c
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@ -287,6 +287,7 @@ static int alloc_common_dbs_info(struct cpufreq_policy *policy,
for_each_cpu(j, policy->related_cpus)
cdata->get_cpu_cdbs(j)->shared = shared;
mutex_init(&shared->timer_mutex);
return 0;
}
@ -297,6 +298,8 @@ static void free_common_dbs_info(struct cpufreq_policy *policy,
struct cpu_common_dbs_info *shared = cdbs->shared;
int j;
mutex_destroy(&shared->timer_mutex);
for_each_cpu(j, policy->cpus)
cdata->get_cpu_cdbs(j)->shared = NULL;
@ -433,7 +436,6 @@ static int cpufreq_governor_start(struct cpufreq_policy *policy,
shared->policy = policy;
shared->time_stamp = ktime_get();
mutex_init(&shared->timer_mutex);
for_each_cpu(j, policy->cpus) {
struct cpu_dbs_info *j_cdbs = cdata->get_cpu_cdbs(j);
@ -493,8 +495,6 @@ static int cpufreq_governor_stop(struct cpufreq_policy *policy,
mutex_unlock(&shared->timer_mutex);
gov_cancel_work(dbs_data, policy);
mutex_destroy(&shared->timer_mutex);
return 0;
}