From 28b170e88bc0c7509e6724717c15cb4b5686026e Mon Sep 17 00:00:00 2001
From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Sun, 13 Jan 2019 10:44:50 +0100
Subject: [PATCH] OF: properties: add missing of_node_put
Git-commit: 28b170e88bc0c7509e6724717c15cb4b5686026e
Patch-mainline: v5.0-rc3
References: bsc#1051510

Add an of_node_put when the result of of_graph_get_remote_port_parent is
not available.

The semantic match that finds this problem is as follows
(http://coccinelle.lip6.fr):

// <smpl>
@r exists@
local idexpression e;
expression x;
@@
e = of_graph_get_remote_port_parent(...);
... when != x = e
    when != true e == NULL
    when != of_node_put(e)
    when != of_fwnode_handle(e)
(
return e;
|
*return ...;
)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/of/property.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/of/property.c b/drivers/of/property.c
index 08430031bd28..8631efa1daa1 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -806,6 +806,7 @@ struct device_node *of_graph_get_remote_node(const struct device_node *node,
 
 	if (!of_device_is_available(remote)) {
 		pr_debug("not available for remote node\n");
+		of_node_put(remote);
 		return NULL;
 	}
 
-- 
2.16.4