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-rw-r--r--drivers/thermal/cpu_cooling.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index aa9c38b1c3ac..9a1d82ef491e 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -413,6 +413,13 @@ static struct notifier_block thermal_cpufreq_notifier_block = {
/**
* cpufreq_cooling_register - function to create cpufreq cooling device.
* @clip_cpus: cpumask of cpus where the frequency constraints will happen.
+ *
+ * This interface function registers the cpufreq cooling device with the name
+ * "thermal-cpufreq-%x". This api can support multiple instances of cpufreq
+ * cooling devices.
+ *
+ * Return: a valid struct thermal_cooling_device pointer on success,
+ * on failure, it returns a corresponding ERR_PTR().
*/
struct thermal_cooling_device *cpufreq_cooling_register(
const struct cpumask *clip_cpus)
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