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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2016-02-22 16:36:44 +0530 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-03-09 14:41:12 +0100 |
| commit | 242aa883a64d8c54cfeee47f3603b21bc705e081 (patch) | |
| tree | 73aa1224af144ab32edafa14089d870863c46cc7 /drivers/cpufreq/cpufreq.c | |
| parent | a1317e091ab1386812ee8ab4e3bbd89f2811bc74 (diff) | |
| download | linux-242aa883a64d8c54cfeee47f3603b21bc705e081.tar.gz linux-242aa883a64d8c54cfeee47f3603b21bc705e081.tar.bz2 linux-242aa883a64d8c54cfeee47f3603b21bc705e081.zip | |
cpufreq: Remove 'policy->governor_enabled'
The entire sequence of events (like INIT/START or STOP/EXIT) for which
cpufreq_governor() is called, is guaranteed to be protected by
policy->rwsem now.
The additional checks that were added earlier (as we were forced to drop
policy->rwsem before calling cpufreq_governor() for EXIT event), aren't
required anymore.
Over that, they weren't sufficient really. They just take care of
START/STOP events, but not INIT/EXIT and the state machine was never
maintained properly by them.
Kill the unnecessary checks and policy->governor_enabled field.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index b3d05a905034..dd568aaf2728 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2010,17 +2010,6 @@ static int cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) pr_debug("%s: for CPU %u, event %u\n", __func__, policy->cpu, event); - if ((policy->governor_enabled && event == CPUFREQ_GOV_START) - || (!policy->governor_enabled - && (event == CPUFREQ_GOV_LIMITS || event == CPUFREQ_GOV_STOP))) { - return -EBUSY; - } - - if (event == CPUFREQ_GOV_STOP) - policy->governor_enabled = false; - else if (event == CPUFREQ_GOV_START) - policy->governor_enabled = true; - ret = policy->governor->governor(policy, event); if (!ret) { @@ -2028,12 +2017,6 @@ static int cpufreq_governor(struct cpufreq_policy *policy, unsigned int event) policy->governor->initialized++; else if (event == CPUFREQ_GOV_POLICY_EXIT) policy->governor->initialized--; - } else { - /* Restore original values */ - if (event == CPUFREQ_GOV_STOP) - policy->governor_enabled = true; - else if (event == CPUFREQ_GOV_START) - policy->governor_enabled = false; } if (((event == CPUFREQ_GOV_POLICY_INIT) && ret) || |