diff options
| author | Viresh Kumar <viresh.kumar@linaro.org> | 2015-07-30 12:40:35 +0530 |
|---|---|---|
| committer | Eduardo Valentin <edubezval@gmail.com> | 2015-08-14 18:26:23 -0700 |
| commit | 1afb9c539daebc2c8a7b33d0e0b8fc9f74671b02 (patch) | |
| tree | fc09b2a671c8890cacbd2358008d2a4bce44f2b6 /drivers | |
| parent | abcbcc25cb3edfc3c9af210a88c9386e353191fe (diff) | |
| download | linux-1afb9c539daebc2c8a7b33d0e0b8fc9f74671b02.tar.bz2 | |
thermal/cpu_cooling: update policy limits if clipped_freq < policy->max
policy->max is the maximum allowed frequency defined by user and
clipped_freq is the maximum that thermal constraints allow.
If clipped_freq is lower than policy->max, then we need to readjust
policy->max.
But, if clipped_freq is greater than policy->max, we don't need to do
anything. We used to call cpufreq_verify_within_limits() in this case,
but it doesn't change anything in this case.
Lets skip this unnecessary call and write a comment that explains this.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/thermal/cpu_cooling.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index 71dbede9edaa..620dcd405ff6 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -229,9 +229,20 @@ static int cpufreq_thermal_notifier(struct notifier_block *nb, if (!cpumask_test_cpu(policy->cpu, &cpufreq_dev->allowed_cpus)) continue; + /* + * policy->max is the maximum allowed frequency defined by user + * and clipped_freq is the maximum that thermal constraints + * allow. + * + * If clipped_freq is lower than policy->max, then we need to + * readjust policy->max. + * + * But, if clipped_freq is greater than policy->max, we don't + * need to do anything. + */ clipped_freq = cpufreq_dev->clipped_freq; - if (policy->max != clipped_freq) + if (policy->max > clipped_freq) cpufreq_verify_within_limits(policy, 0, clipped_freq); break; } |