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Subject[PATCH 5/8] [media] v4l: xilinx-vipp: add missing of_node_put
Date
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>

---
drivers/media/platform/xilinx/xilinx-vipp.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c
index 7b7cb9c..b9bf24f 100644
--- a/drivers/media/platform/xilinx/xilinx-vipp.c
+++ b/drivers/media/platform/xilinx/xilinx-vipp.c
@@ -476,8 +476,10 @@ static int xvip_graph_dma_init(struct xvip_composite_device *xdev)

for_each_child_of_node(ports, port) {
ret = xvip_graph_dma_init_one(xdev, port);
- if (ret < 0)
+ if (ret < 0) {
+ of_node_put(port);
return ret;
+ }
}

return 0;


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