1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index ba43991ba98a..e1c6433b16e0 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -366,6 +366,11 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
                 break;
 
         case CPUFREQ_GOV_LIMITS:
+                mutex_lock(&dbs_data->mutex);
+                if (!cpu_cdbs->cur_policy) {
+                        mutex_unlock(&dbs_data->mutex);
+                        break;
+                }
                 mutex_lock(&cpu_cdbs->timer_mutex);
                 if (policy->max < cpu_cdbs->cur_policy->cur)
                         __cpufreq_driver_target(cpu_cdbs->cur_policy,
@@ -375,6 +380,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
                                         policy->min, CPUFREQ_RELATION_L);
                 dbs_check_cpu(dbs_data, cpu);
                 mutex_unlock(&cpu_cdbs->timer_mutex);
+                mutex_unlock(&dbs_data->mutex);
                 break;
         }
         return 0;