From cb1b631864ad7e34324ceccb73d0226dd00ad90d Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Tue, 25 Apr 2017 15:57:23 +0530 Subject: 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 Reviewed-by: Lukasz Luba Tested-by: Lukasz Luba Signed-off-by: Eduardo Valentin --- drivers/thermal/cpu_cooling.c | 7 ++++--- 1 file 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) -- cgit