linux-kernel - Re: [PATCH 2/3] media: i2c: drop check because i2c_unregister

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Date:   Mon, 25 Sep 2023 14:59:38 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     linux-renesas-soc@...r.kernel.org,
        Jacopo Mondi <jacopo+renesas@...ndi.org>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] media: i2c: drop check because
 i2c_unregister_device() is NULL safe

On Fri, Sep 22, 2023 at 10:04:19AM +0200, Wolfram Sang wrote:
> No need to check the argument of i2c_unregister_device() because the
> function itself does it.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>

I'll take this in my tree and send a pull request if Sakari doesn't pick
up the patch himself.

> ---
> Build tested only. Please apply to your tree.
> 
>  drivers/media/i2c/rdacm20.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/media/i2c/rdacm20.c b/drivers/media/i2c/rdacm20.c
> index f4e2e2f3972a..b4647bda8c21 100644
> --- a/drivers/media/i2c/rdacm20.c
> +++ b/drivers/media/i2c/rdacm20.c
> @@ -625,8 +625,7 @@ static int rdacm20_probe(struct i2c_client *client)
>  	v4l2_ctrl_handler_free(&dev->ctrls);
>  error:
>  	media_entity_cleanup(&dev->sd.entity);
> -	if (dev->sensor)
> -		i2c_unregister_device(dev->sensor);
> +	i2c_unregister_device(dev->sensor);
>  
>  	dev_err(&client->dev, "probe failed\n");
>  

-- 
Regards,

Laurent Pinchart