Messages in this thread Patch in this message | | | From | Julia Lawall <> | Subject | [PATCH 6/8] [media] v4l: xilinx-tpg: add missing of_node_put | Date | Sun, 25 Oct 2015 14:57:05 +0100 |
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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-tpg.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/media/platform/xilinx/xilinx-tpg.c b/drivers/media/platform/xilinx/xilinx-tpg.c index b5f7d5e..8bd7e37 100644 --- a/drivers/media/platform/xilinx/xilinx-tpg.c +++ b/drivers/media/platform/xilinx/xilinx-tpg.c @@ -731,6 +731,7 @@ static int xtpg_parse_of(struct xtpg_device *xtpg) format = xvip_of_get_format(port); if (IS_ERR(format)) { dev_err(dev, "invalid format in DT"); + of_node_put(port); return PTR_ERR(format); } @@ -739,6 +740,7 @@ static int xtpg_parse_of(struct xtpg_device *xtpg) xtpg->vip_format = format; } else if (xtpg->vip_format != format) { dev_err(dev, "in/out format mismatch in DT"); + of_node_put(port); return -EINVAL; }
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