1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index d6622689d000..cf485d928903 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1123,6 +1123,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
                 policy->user_policy.max = policy->max;
         }
 
+        down_write(&policy->rwsem);
         write_lock_irqsave(&cpufreq_driver_lock, flags);
         for_each_cpu(j, policy->cpus)
                 per_cpu(cpufreq_cpu_data, j) = policy;
@@ -1206,6 +1207,7 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif,
                 policy->user_policy.policy = policy->policy;
                 policy->user_policy.governor = policy->governor;
         }
+        up_write(&policy->rwsem);
 
         kobject_uevent(&policy->kobj, KOBJ_ADD);
         up_read(&cpufreq_rwsem);