linux-kernel - Re: [PATCH v3 1/3] media: rkisp1: Properly handle result of rkisp1_params_init_vb2

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Message-ID: <20250605082529.GH3755@pendragon.ideasonboard.com>
Date: Thu, 5 Jun 2025 11:25:29 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Stefan Klug <stefan.klug@...asonboard.com>
Cc: Dafna Hirschfeld <dafna@...tmail.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>, linux-media@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/3] media: rkisp1: Properly handle result of
 rkisp1_params_init_vb2_queue()

Hi Stefan,

Thank you for the patch.

On Fri, May 23, 2025 at 05:14:30PM +0200, Stefan Klug wrote:
> Properly handle the return of rkisp1_params_init_vb2_queue(). It is very
> unlikely that this ever fails without code changes but should be handled
> anyways.
> 
> While at it rename the error label for easier extension in the upcoming
> patch.

I'd have kept that change for the next patch, as it's hard to review
here without looking at upcoming changes. There's no need for a v4 just
because of this.

> Signed-off-by: Stefan Klug <stefan.klug@...asonboard.com>

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

> ---
> 
> Changes in v3:
> - Moved these changes into its own patch
> ---
>  drivers/media/platform/rockchip/rkisp1/rkisp1-params.c | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
> index b28f4140c8a3..24a8de697f2b 100644
> --- a/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
> +++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-params.c
> @@ -2763,7 +2763,9 @@ int rkisp1_params_register(struct rkisp1_device *rkisp1)
>  	vdev->queue = &node->buf_queue;
>  	vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_META_OUTPUT;
>  	vdev->vfl_dir = VFL_DIR_TX;
> -	rkisp1_params_init_vb2_queue(vdev->queue, params);
> +	ret = rkisp1_params_init_vb2_queue(vdev->queue, params);
> +	if (ret)
> +		goto err_media;
>  
>  	params->metafmt = &rkisp1_params_formats[RKISP1_PARAMS_FIXED];
>  
> @@ -2777,18 +2779,18 @@ int rkisp1_params_register(struct rkisp1_device *rkisp1)
>  	node->pad.flags = MEDIA_PAD_FL_SOURCE;
>  	ret = media_entity_pads_init(&vdev->entity, 1, &node->pad);
>  	if (ret)
> -		goto error;
> +		goto err_media;
>  
>  	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
>  	if (ret) {
>  		dev_err(rkisp1->dev,
>  			"failed to register %s, ret=%d\n", vdev->name, ret);
> -		goto error;
> +		goto err_media;
>  	}
>  
>  	return 0;
>  
> -error:
> +err_media:
>  	media_entity_cleanup(&vdev->entity);
>  	mutex_destroy(&node->vlock);
>  	return ret;

-- 
Regards,

Laurent Pinchart