[PATCH] of: resolver: Add missing of_node_put

From: Amitoj Kaur Chawla
Date: Wed Jan 27 2016 - 10:20:27 EST


for_each_child_of_node performs an of_node_get on each iteration, so
to break out of the loop an of_node_put is required.

Found using Coccinelle. The semantic patch used for this is as follows:

// <smpl>
@@
expression e;
local idexpression n;
@@

for_each_child_of_node(..., n) {
... when != of_node_put(n)
when != e = n
(
return n;
|
+ of_node_put(n);
? return ...;
)
...
}
// </smpl

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@xxxxxxxxx>
---
drivers/of/resolver.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c
index 640eb4c..e2a0143 100644
--- a/drivers/of/resolver.c
+++ b/drivers/of/resolver.c
@@ -40,8 +40,10 @@ static struct device_node *__of_find_node_by_full_name(struct device_node *node,

for_each_child_of_node(node, child) {
found = __of_find_node_by_full_name(child, full_name);
- if (found != NULL)
+ if (found != NULL) {
+ of_node_put(child);
return found;
+ }
}

return NULL;
--
1.9.1