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

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Date: Thu, 27 Jun 2024 11:39:28 +0200
From: Jonas Karlman <jonas@...boo.se>
To: Dan Carpenter <dan.carpenter@...aro.org>
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

Hi Dan,

On 2024-06-19 09:21, Dan Carpenter wrote:
> 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++?

Thanks, I will send a v6 later today/tomorrow and will include your
proposed change.

Regards,
Jonas

> 
> regards,
> dan carpenter