linux-kernel - Re: [PATCH] media: i2c: ov5648: Free V4L2 fwnode data on unbind

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Date:   Tue, 20 Sep 2022 14:46:35 +0200
From:   Jacopo Mondi <jacopo@...ndi.org>
To:     Rafael Mendonca <rafaelmendsr@...il.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] media: i2c: ov5648: Free V4L2 fwnode data on unbind

Hi Rafael

On Sun, Sep 18, 2022 at 11:32:46PM -0300, Rafael Mendonca wrote:
> The V4L2 fwnode data structure doesn't get freed on unbind, which leads to
> a memleak.
>
> Fixes: e43ccb0a045f ("media: i2c: Add support for the OV5648 image sensor")
> Signed-off-by: Rafael Mendonca <rafaelmendsr@...il.com>
> ---
>  drivers/media/i2c/ov5648.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/media/i2c/ov5648.c b/drivers/media/i2c/ov5648.c
> index dfcd33e9ee13..95850f06112b 100644
> --- a/drivers/media/i2c/ov5648.c
> +++ b/drivers/media/i2c/ov5648.c
> @@ -2598,6 +2598,8 @@ static int ov5648_remove(struct i2c_client *client)
>  	mutex_destroy(&sensor->mutex);
>  	media_entity_cleanup(&subdev->entity);
>
> +	v4l2_fwnode_endpoint_free(&sensor->endpoint);
> +

Nit: all the other function calls are in a single block, this one
doesn't deserve an empty line before it.

Nit apart, the patch is a good fix.


>  	return 0;
>  }
>
> --
> 2.34.1
>