1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 5133cd1e10b7..e2fc6161dded 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1093,7 +1093,9 @@ int power_actor_set_power(struct thermal_cooling_device *cdev,
                 return ret;
 
         instance->target = state;
+        mutex_lock(&cdev->lock);
         cdev->updated = false;
+        mutex_unlock(&cdev->lock);
         thermal_cdev_update(cdev);
 
         return 0;
@@ -1623,11 +1625,13 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev)
         struct thermal_instance *instance;
         unsigned long target = 0;
 
+        mutex_lock(&cdev->lock);
         /* cooling device is updated*/
-        if (cdev->updated)
+        if (cdev->updated) {
+                mutex_unlock(&cdev->lock);
                 return;
+        }
 
-        mutex_lock(&cdev->lock);
         /* Make sure cdev enters the deepest cooling state */
         list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
                 dev_dbg(&cdev->device, "zone%d->target=%lu\n",
@@ -1637,9 +1641,9 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev)
                 if (instance->target > target)
                         target = instance->target;
         }
-        mutex_unlock(&cdev->lock);
         cdev->ops->set_cur_state(cdev, target);
         cdev->updated = true;
+        mutex_unlock(&cdev->lock);
         trace_cdev_update(cdev, target);
         dev_dbg(&cdev->device, "set to state %lu\n", target);
 }