Thread (5 messages) 5 messages, 3 authors, 2025-02-24

Re: [PATCH next] media: xilinx-tpg: fix double put in xtpg_parse_of()

From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: 2025-02-24 09:22:00
Also in: kernel-janitors, linux-media, lkml

Hi Hans,

On Mon, Feb 24, 2025 at 09:49:47AM +0100, Hans Verkuil wrote:
On 05/11/2024 17:59, Laurent Pinchart wrote:
quoted
Hi Dan,

Thank you for the patch.

On Mon, Nov 04, 2024 at 08:16:19PM +0300, Dan Carpenter wrote:
quoted
This loop was recently converted to use for_each_of_graph_port() which
automatically does __cleanup__ on the "port" iterator variable.  Delete
the calls to of_node_put(port) to avoid a double put bug.

Fixes: 393194cdf11e ("media: xilinx-tpg: use new of_graph functions")
Signed-off-by: Dan Carpenter <redacted>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

The offending commit wasn't merged through the media tree, so we can't
easily merge the fix there either. I'm fine merging this fix through
Rob's tree.
I don't see this patch merged anywhere. Should I just pick it up? I think
it got lost in the noise.

The commit 393194cdf11e is now available in our media tree, so it should
be fine, I think, if I pick it up. It needs a CC to stable as well, right?
I can add that.
Yes, I'd CC stable. Thank you for handling it.
quoted
quoted
---
 drivers/media/platform/xilinx/xilinx-tpg.c | 2 --
 1 file changed, 2 deletions(-)
diff --git a/drivers/media/platform/xilinx/xilinx-tpg.c b/drivers/media/platform/xilinx/xilinx-tpg.c
index cb93711ea3e3..7deec6e37edc 100644
--- a/drivers/media/platform/xilinx/xilinx-tpg.c
+++ b/drivers/media/platform/xilinx/xilinx-tpg.c
@@ -722,7 +722,6 @@ 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);
 		}
 
@@ -731,7 +730,6 @@ 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;
 		}
 
-- 
Regards,

Laurent Pinchart
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