leds: Fix leds_list_lock locking issues

Covert leds_list_lock to a rw_sempahore to match previous LED trigger
locking fixes, fixing lock ordering.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index ba8b04b03b9f..64c66b3769c9 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -106,9 +106,9 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
                 goto err_out;
 
         /* add to the list of leds */
-        write_lock(&leds_list_lock);
+        down_write(&leds_list_lock);
         list_add_tail(&led_cdev->node, &leds_list);
-        write_unlock(&leds_list_lock);
+        up_write(&leds_list_lock);
 
 #ifdef CONFIG_LEDS_TRIGGERS
         init_rwsem(&led_cdev->trigger_lock);
@@ -155,9 +155,9 @@ void led_classdev_unregister(struct led_classdev *led_cdev)
 
         device_unregister(led_cdev->dev);
 
-        write_lock(&leds_list_lock);
+        down_write(&leds_list_lock);
         list_del(&led_cdev->node);
-        write_unlock(&leds_list_lock);
+        up_write(&leds_list_lock);
 }
 EXPORT_SYMBOL_GPL(led_classdev_unregister);