linux-kernel - [PATCH] media: stm32: csi: correct remote pad retrieval

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20260211-stm32-csi-pad-retrieval-fix-v1-1-0db0f08baad1@foss.st.com>
Date: Wed, 11 Feb 2026 13:52:30 +0100
From: Alain Volmat <alain.volmat@...s.st.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, Maxime Coquelin
	<mcoquelin.stm32@...il.com>, Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Hans Verkuil <hverkuil@...nel.org>
CC: <linux-media@...r.kernel.org>, <linux-stm32@...md-mailman.stormreply.com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<stable@...nel.org>, Alain Volmat <alain.volmat@...s.st.com>
Subject: [PATCH] media: stm32: csi: correct remote pad retrieval

The function media_entity_get_fwnode_pad is called in order to
retrieve the remote pad, which is the source of the CSI.
However this function is expecting the sensor endpoint fwnode
and not sensor device fwnode as it is currently given.
Correct this by properly relying on the notified matched fwnode
data instead of the subdev entity fwnode.

Cc: stable@...nel.org
Fixes: dcb0f4c16be5 ("media: stm32: csi: addition of the STM32 CSI driver")
Signed-off-by: Alain Volmat <alain.volmat@...s.st.com>
---
 drivers/media/platform/st/stm32/stm32-csi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/st/stm32/stm32-csi.c b/drivers/media/platform/st/stm32/stm32-csi.c
index fd2b6dfbd44c..ecd0ed8e76b5 100644
--- a/drivers/media/platform/st/stm32/stm32-csi.c
+++ b/drivers/media/platform/st/stm32/stm32-csi.c
@@ -825,7 +825,7 @@ static int stm32_csi_async_bound(struct v4l2_async_notifier *notifier,
 	int remote_pad;
 
 	remote_pad = media_entity_get_fwnode_pad(&s_subdev->entity,
-						 s_subdev->fwnode,
+						 asd->match.fwnode,
 						 MEDIA_PAD_FL_SOURCE);
 	if (remote_pad < 0) {
 		dev_err(csidev->dev, "Couldn't find output pad for subdev %s\n",

---
base-commit: c824345288d11e269ce41b36c105715bc2286050
change-id: 20260211-stm32-csi-pad-retrieval-fix-3a100e671f97

Best regards,
-- 
Alain Volmat <alain.volmat@...s.st.com>