FAILED: Patch "media: i2c: ov5647: Initialize subdev before controls" failed to apply to 6.6-stable tree

[Sasha Levin <sashal@kernel.org>]

The patch below does not apply to the 6.6-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 eee13cbccacb6d0a3120c126b8544030905b069d Mon Sep 17 00:00:00 2001
From: Jai Luthra <jai.luthra@ideasonboard.com>
Date: Mon, 22 Dec 2025 13:45:25 +0530
Subject: [PATCH] media: i2c: ov5647: Initialize subdev before controls

In ov5647_init_controls() we call v4l2_get_subdevdata, but it is
initialized by v4l2_i2c_subdev_init() in the probe, which currently
happens after init_controls(). This can result in a segfault if the
error condition is hit, and we try to access i2c_client, so fix the
order.

Fixes: 4974c2f19fd8 ("media: ov5647: Support gain, exposure and AWB controls")
Cc: stable@vger.kernel.org
Suggested-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
---
 drivers/media/i2c/ov5647.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
index e193fef4fcedf..f9fac858dc7ba 100644
--- a/drivers/media/i2c/ov5647.c
+++ b/drivers/media/i2c/ov5647.c
@@ -1420,15 +1420,15 @@ static int ov5647_probe(struct i2c_client *client)
 
 	sensor->mode = OV5647_DEFAULT_MODE;
 
-	ret = ov5647_init_controls(sensor);
-	if (ret)
-		goto mutex_destroy;
-
 	sd = &sensor->sd;
 	v4l2_i2c_subdev_init(sd, client, &ov5647_subdev_ops);
 	sd->internal_ops = &ov5647_subdev_internal_ops;
 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
 
+	ret = ov5647_init_controls(sensor);
+	if (ret)
+		goto mutex_destroy;
+
 	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
 	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
 	ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad);
-- 
2.51.0