linux-kernel - Re: [PATCH v5 08/10] media: rkvdec: Add image format concept

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Message-ID: <f7e4b0be-fe09-4db8-b081-21c46c0d836f@moroto.mountain>
Date: Wed, 19 Jun 2024 10:21:45 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Jonas Karlman <jonas@...boo.se>
Cc: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Hans Verkuil <hverkuil-cisco@...all.nl>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Alex Bee <knaerzche@...il.com>,
	Nicolas Dufresne <nicolas.dufresne@...labora.com>,
	Benjamin Gaignard <benjamin.gaignard@...labora.com>,
	Sebastian Fricke <sebastian.fricke@...labora.com>,
	Christopher Obbard <chris.obbard@...labora.com>,
	Detlev Casanova <detlev.casanova@...labora.com>,
	linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
	linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 08/10] media: rkvdec: Add image format concept

On Tue, Jun 18, 2024 at 07:46:32PM +0000, Jonas Karlman wrote:
> +static u32 rkvdec_enum_decoded_fmt(struct rkvdec_ctx *ctx, int index,
> +				   enum rkvdec_image_fmt image_fmt)
>  {
>  	const struct rkvdec_coded_fmt_desc *desc = ctx->coded_fmt_desc;
> +	unsigned int i, j;
>  
>  	if (WARN_ON(!desc))
>  		return 0;
>  
> -	if (index >= desc->num_decoded_fmts)
> -		return 0;
> +	for (i = 0, j = 0; i < desc->num_decoded_fmts; i++) {
> +		if (rkvdec_image_fmt_match(desc->decoded_fmts[i].image_fmt,
> +					   image_fmt) &&
> +		    index == j++)

I really don't care for this j++ which is tucked inside a condition.

> +			return desc->decoded_fmts[i].fourcc;
> +	}

	int fmt_idx = -1;
	unsigned int i;

	for (i = 0, i < desc->num_decoded_fmts; i++) {
		if (!rkvdec_image_fmt_match(desc->decoded_fmts[i].image_fmt,
					    image_fmt))
			continue;
		fmt_idx++;
		if (index == fmt_idx)
			return desc->decoded_fmts[i].fourcc;
	}

	return 0;

>  
> -	return desc->decoded_fmts[index];
> +	return 0;
>  }

Don't resend if this is the only issue, but if you do resend could you
get rid of the j++?

regards,
dan carpenter