From: Markus Elfring <[email protected]>
Date: Wed, 8 Jul 2015 21:26:02 +0200

The kobject_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <[email protected]>
---
 sound/hda/hdac_sysfs.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/hda/hdac_sysfs.c b/sound/hda/hdac_sysfs.c
index 0a6ce3b..089b35f 100644
--- a/sound/hda/hdac_sysfs.c
+++ b/sound/hda/hdac_sysfs.c
@@ -321,8 +321,7 @@ static void widget_tree_free(struct hdac_device *codec)
                        free_widget_node(*p, &widget_node_group);
                kfree(tree->nodes);
        }
-       if (tree->root)
-               kobject_put(tree->root);
+       kobject_put(tree->root);
        kfree(tree);
        codec->widgets = NULL;
 }
-- 
2.4.5

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