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cpufreq: governor: Drop unnecessary checks from show() and store() 

The show() and store() routines in the cpufreq-governor core don't need
to check if the struct governor_attr they want to use really provides
the callbacks they need as expected (if that's not the case, it means a
bug in the code anyway), so change them to avoid doing that.

Also change the error value to -EBUSY, if the governor is getting
removed and we aren't allowed to store any more changes.

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 2016-02-22 14:18:20 +05:30 committed by Rafael J. Wysocki
parent 27de348239
commit f737236b12
1 changed files with 3 additions and 7 deletions
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10
drivers/cpufreq/cpufreq_governor.c
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@ -125,12 +125,8 @@ static ssize_t governor_show(struct kobject *kobj, struct attribute *attr,
{
struct dbs_data *dbs_data = to_dbs_data(kobj);
struct governor_attr *gattr = to_gov_attr(attr);
int ret = -EIO;
if (gattr->show)
ret = gattr->show(dbs_data, buf);
return ret;
return gattr->show(dbs_data, buf);
}
static ssize_t governor_store(struct kobject *kobj, struct attribute *attr,
@ -138,11 +134,11 @@ static ssize_t governor_store(struct kobject *kobj, struct attribute *attr,
{
struct dbs_data *dbs_data = to_dbs_data(kobj);
struct governor_attr *gattr = to_gov_attr(attr);
int ret = -EIO;
int ret = -EBUSY;
mutex_lock(&dbs_data->mutex);
if (dbs_data->usage_count && gattr->store)
if (dbs_data->usage_count)
ret = gattr->store(dbs_data, buf, count);
mutex_unlock(&dbs_data->mutex);