diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
index 17544320d1a634309841b57050c9ce2c722ad708..b6a3d379fe9aaeb340660fe97b66e88fb2135885 100644
--- a/drivers/extcon/extcon-class.c
+++ b/drivers/extcon/extcon-class.c
@@ -129,7 +129,6 @@ static ssize_t state_show(struct device *dev, struct device_attribute *attr,
 	return count;
 }
 
-int extcon_set_state(struct extcon_dev *edev, u32 state);
 static ssize_t state_store(struct device *dev, struct device_attribute *attr,
 			   const char *buf, size_t count)
 {