diff --git a/[refs] b/[refs]
index 6f053685054a..59b519d8d088 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 41518c41dd6f36a0a951d1850e286a44773f75ca
+refs/heads/master: 4b33deb5470cda8268d684da6d448c081b6bf641
diff --git a/trunk/drivers/thermal/cpu_cooling.c b/trunk/drivers/thermal/cpu_cooling.c
index 73944a34fdb9..1ec1591e3fd3 100644
--- a/trunk/drivers/thermal/cpu_cooling.c
+++ b/trunk/drivers/thermal/cpu_cooling.c
@@ -257,6 +257,12 @@ static unsigned int get_cpu_frequency(unsigned int cpu, unsigned long level)
  * @cpufreq_device: cpufreq_cooling_device pointer containing frequency
  *	clipping data.
  * @cooling_state: value of the cooling state.
+ *
+ * Function used to make sure the cpufreq layer is aware of current thermal
+ * limits. The limits are applied by updating the cpufreq policy.
+ *
+ * Return: 0 on success, an error code otherwise (-EINVAL in case wrong
+ * cooling state).
  */
 static int cpufreq_apply_cooling(struct cpufreq_cooling_device *cpufreq_device,
 				unsigned long cooling_state)