1 files changed, 33 insertions, 5 deletions

diff --git a/drivers/devfreq/governor_performance.c b/drivers/devfreq/governor_performance.c
index af75ddd4f158..c72f942f30a8 100644
--- a/drivers/devfreq/governor_performance.c
+++ b/drivers/devfreq/governor_performance.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/devfreq.h>
+#include <linux/module.h>
 #include "governor.h"
 
 static int devfreq_performance_func(struct devfreq *df,
@@ -26,14 +27,41 @@ static int devfreq_performance_func(struct devfreq *df,
         return 0;
 }
 
-static int performance_init(struct devfreq *devfreq)
+static int devfreq_performance_handler(struct devfreq *devfreq,
+                                unsigned int event, void *data)
 {
-        return update_devfreq(devfreq);
+        int ret = 0;
+
+        if (event == DEVFREQ_GOV_START) {
+                mutex_lock(&devfreq->lock);
+                ret = update_devfreq(devfreq);
+                mutex_unlock(&devfreq->lock);
+        }
+
+        return ret;
 }
 
-const struct devfreq_governor devfreq_performance = {
+static struct devfreq_governor devfreq_performance = {
         .name = "performance",
-        .init = performance_init,
         .get_target_freq = devfreq_performance_func,
-        .no_central_polling = true,
+        .event_handler = devfreq_performance_handler,
 };
+
+static int __init devfreq_performance_init(void)
+{
+        return devfreq_add_governor(&devfreq_performance);
+}
+subsys_initcall(devfreq_performance_init);
+
+static void __exit devfreq_performance_exit(void)
+{
+        int ret;
+
+        ret = devfreq_remove_governor(&devfreq_performance);
+        if (ret)
+                pr_err("%s: failed remove governor %d\n", __func__, ret);
+
+        return;
+}
+module_exit(devfreq_performance_exit);
+MODULE_LICENSE("GPL");