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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2017-04-25 15:57:23 +0530 |
|---|---|---|
| committer | Eduardo Valentin <edubezval@gmail.com> | 2017-05-27 17:32:59 -0700 |
| commit | cb1b631864ad7e34324ceccb73d0226dd00ad90d (patch) | |
| tree | 5c1c1834844c1c7d86ac7e6fc8750998c4a84bee /drivers/thermal/cpu_cooling.c | |
| parent | 53ca1ece60a719e23f686c647cb05d9e12a31974 (diff) | |
| download | blackbird-op-linux-cb1b631864ad7e34324ceccb73d0226dd00ad90d.tar.gz blackbird-op-linux-cb1b631864ad7e34324ceccb73d0226dd00ad90d.zip | |
thermal: cpu_cooling: 'freq' can't be zero in cpufreq_state2power()
The frequency table shouldn't have any zero frequency entries and so
such a check isn't required. Though it would be better to make sure
'state' is within limits.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers/thermal/cpu_cooling.c')
| -rw-r--r-- | drivers/thermal/cpu_cooling.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index bfa9731e7cdb..9cbf7bdbeb7a 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -564,12 +564,13 @@ static int cpufreq_state2power(struct thermal_cooling_device *cdev, int ret; struct cpufreq_cooling_device *cpufreq_cdev = cdev->devdata; + /* Request state should be less than max_level */ + if (WARN_ON(state > cpufreq_cdev->max_level)) + return -EINVAL; + num_cpus = cpumask_weight(cpufreq_cdev->policy->cpus); freq = cpufreq_cdev->freq_table[state].frequency; - if (!freq) - return -EINVAL; - dynamic_power = cpu_freq_to_power(cpufreq_cdev, freq) * num_cpus; ret = get_static_power(cpufreq_cdev, tz, freq, &static_power); if (ret) |
