of/overlay: add missing of_node_put
for_each_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.
A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):
// <smpl>
@@
expression root,e;
local idexpression child;
@@
for_each_child_of_node(root, child) {
... when != of_node_put(child)
when != e = child
(
return child;
|
+ of_node_put(child);
? return ...;
)
...
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index 24e025f..54e5af9 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -149,6 +149,7 @@
pr_err("%s: Failed to apply single node @%s/%s\n",
__func__, target->full_name,
child->name);
+ of_node_put(child);
return ret;
}
}
@@ -417,8 +418,10 @@
return 1;
for_each_child_of_node(tree, child) {
- if (overlay_subtree_check(child, dn))
+ if (overlay_subtree_check(child, dn)) {
+ of_node_put(child);
return 1;
+ }
}
return 0;