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authorJulia Lawall <Julia.Lawall@lip6.fr>2015-10-22 12:02:48 +0300
committerRob Herring <robh@kernel.org>2015-10-22 17:35:51 +0300
commit001cf5048e99df7ddac2716ee9958083488b6071 (patch)
tree4184f1ddbf6f870edf8a5cfa0ec7f0f989f2b974 /drivers/of
parent7fad948a7c22cf47ef4e3c3127cd961ff5e2d394 (diff)
downloadlinux-001cf5048e99df7ddac2716ee9958083488b6071.tar.xz
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>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/overlay.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c
index 24e025f79299..54e5af9d7377 100644
--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -149,6 +149,7 @@ static int of_overlay_apply_one(struct of_overlay *ov,
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 @@ static int overlay_subtree_check(struct device_node *tree,
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;