diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 3b36797..af8372f 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -477,7 +477,7 @@
 						GFP_KERNEL);
 	devfreq->last_stat_updated = jiffies;
 
-	dev_set_name(&devfreq->dev, dev_name(dev));
+	dev_set_name(&devfreq->dev, "%s", dev_name(dev));
 	err = device_register(&devfreq->dev);
 	if (err) {
 		put_device(&devfreq->dev);