linux-kernel - [PATCH] media: ov6650: Fix device node exposed without proper locking

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Message-Id: <20190602212215.26734-1-jmkrzyszt@gmail.com>
Date:   Sun,  2 Jun 2019 23:22:15 +0200
From:   Janusz Krzysztofik <jmkrzyszt@...il.com>
To:     Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hans.verkuil@...co.com>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Janusz Krzysztofik <jmkrzyszt@...il.com>
Subject: [PATCH] media: ov6650: Fix device node exposed without proper locking

Commit c62b96050bee ("media: ov6650: Register with asynchronous
subdevice framework") carelessly requested creation of a video device
node by setting a V4L2_SUBDEV_FL_HAS_DEVNODE flag.  The driver is not
ready for that as it doesn't implement proper locking required for
serialization of IOCTLs.

Fix it by dropping the flag assignment.

Fixes: c62b96050bee ("media: ov6650: Register with asynchronous subdevice framework")
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@...il.com>
---
 drivers/media/i2c/ov6650.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c
index 1b972e591b48..ace95ba7dd19 100644
--- a/drivers/media/i2c/ov6650.c
+++ b/drivers/media/i2c/ov6650.c
@@ -1009,7 +1009,6 @@ static int ov6650_probe(struct i2c_client *client,
 	priv->colorspace  = V4L2_COLORSPACE_JPEG;
 
 	priv->subdev.internal_ops = &ov6650_internal_ops;
-	priv->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 
 	ret = v4l2_async_register_subdev(&priv->subdev);
 	if (ret)
-- 
2.21.0