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cpufreq: Clean up cpufreq_parse_governor()

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Drop an unnecessary local variable from cpufreq_parse_governor()
and rearrange the code in there to make it easier to follow.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@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:
Rafael J. Wysocki 2017-11-23 01:23:16 +01:00
parent ae64f9bd1d
commit 045149e6a2
1 changed files with 18 additions and 16 deletions
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34
drivers/cpufreq/cpufreq.c
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@ -604,16 +604,15 @@ static struct cpufreq_governor *find_governor(const char *str_governor)
static int cpufreq_parse_governor(char *str_governor, unsigned int *policy,
struct cpufreq_governor **governor)
{
int err = -EINVAL;
if (cpufreq_driver->setpolicy) {
if (!strncasecmp(str_governor, "performance", CPUFREQ_NAME_LEN)) {
*policy = CPUFREQ_POLICY_PERFORMANCE;
err = 0;
} else if (!strncasecmp(str_governor, "powersave",
CPUFREQ_NAME_LEN)) {
return 0;
}
if (!strncasecmp(str_governor, "powersave", CPUFREQ_NAME_LEN)) {
*policy = CPUFREQ_POLICY_POWERSAVE;
err = 0;
return 0;
}
} else {
struct cpufreq_governor *t;
@ -621,26 +620,29 @@ static int cpufreq_parse_governor(char *str_governor, unsigned int *policy,
mutex_lock(&cpufreq_governor_mutex);
t = find_governor(str_governor);
if (t == NULL) {
if (!t) {
int ret;
mutex_unlock(&cpufreq_governor_mutex);
ret = request_module("cpufreq_%s", str_governor);
if (ret)
return -EINVAL;
mutex_lock(&cpufreq_governor_mutex);
if (ret == 0)
t = find_governor(str_governor);
}
if (t != NULL) {
*governor = t;
err = 0;
t = find_governor(str_governor);
}
mutex_unlock(&cpufreq_governor_mutex);
if (t) {
*governor = t;
return 0;
}
}
return err;
return -EINVAL;
}
/**