FAILED: Patch "media: i2c: ov5647: use our own mutex for the ctrl lock" failed to apply to 6.12-stable tree

[Sasha Levin <sashal@kernel.org>]

The patch below does not apply to the 6.12-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From 973e42fd5d2b397bff34f0c249014902dbf65912 Mon Sep 17 00:00:00 2001
From: Xiaolei Wang <xiaolei.wang@windriver.com>
Date: Fri, 5 Dec 2025 15:19:18 +0800
Subject: [PATCH] media: i2c: ov5647: use our own mutex for the ctrl lock

__v4l2_ctrl_handler_setup() and __v4l2_ctrl_modify_range() contains an
assertion to verify that the v4l2_ctrl_handler::lock is held, as it should
only be called when the lock has already been acquired. Therefore use our
own mutex for the ctrl lock, otherwise a warning will be reported.

Fixes: 4974c2f19fd8 ("media: ov5647: Support gain, exposure and AWB controls")
Cc: stable@vger.kernel.org
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
[Sakari Ailus: Fix a minor conflict.]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
---
 drivers/media/i2c/ov5647.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
index 1041732104fa7..6285e234962e0 100644
--- a/drivers/media/i2c/ov5647.c
+++ b/drivers/media/i2c/ov5647.c
@@ -1248,6 +1248,8 @@ static int ov5647_init_controls(struct ov5647 *sensor)
 
 	v4l2_ctrl_handler_init(&sensor->ctrls, 14);
 
+	sensor->ctrls.lock = &sensor->lock;
+
 	v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
 			  V4L2_CID_AUTOGAIN, 0, 1, 1, 0);
 
-- 
2.51.0