Merge branch 'master'

1 files changed, 4 insertions, 0 deletions

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;
 }