diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 1ba4039777e8..8d328186f774 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -423,6 +423,8 @@ static ssize_t store_scaling_governor (struct cpufreq_policy * policy, if (cpufreq_parse_governor(str_governor, &new_policy.policy, &new_policy.governor)) return -EINVAL; + lock_cpu_hotplug(); + /* Do not use cpufreq_set_policy here or the user_policy.max will be wrongly overridden */ mutex_lock(&policy->lock); @@ -432,6 +434,8 @@ static ssize_t store_scaling_governor (struct cpufreq_policy * policy, policy->user_policy.governor = policy->governor; mutex_unlock(&policy->lock); + unlock_cpu_hotplug(); + return ret ? ret : count; }