diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 6182bd5..2bd9158 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -231,6 +231,7 @@
 int get_tz_trend(struct thermal_zone_device *, int);
 struct thermal_instance *get_thermal_instance(struct thermal_zone_device *,
 		struct thermal_cooling_device *, int);
+void thermal_cdev_update(struct thermal_cooling_device *);
 
 int thermal_register_governor(struct thermal_governor *);
 void thermal_unregister_governor(struct thermal_governor *);