linux-kernel - Re: [PATCH v3 01/18] media: allegro: nal-hevc: Replace array[1] with arrray[N]

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Date: Tue, 28 May 2024 15:52:04 +0200
From: Michael Tretter <m.tretter@...gutronix.de>
To: Ricardo Ribalda <ribalda@...omium.org>
Cc: Pengutronix Kernel Team <kernel@...gutronix.de>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Michal Simek <michal.simek@....com>,
	Andy Walls <awalls@...metrocast.net>,
	Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
	Vikash Garodia <quic_vgarodia@...cinc.com>,
	Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
	Hans Verkuil <hverkuil-cisco@...all.nl>
Subject: Re: [PATCH v3 01/18] media: allegro: nal-hevc: Replace array[1] with
 arrray[N]

Typo in the subject: arrray -> array

On Mon, 27 May 2024 21:08:51 +0000, Ricardo Ribalda wrote:
> Structures that have a single element array as the last field can be
> mistaken as a "flex array".
> 
> We could replace all the single element arrays in the structure with
> single element fields, but this driver prefers to follow the ITU-T H.265
> specification, which defines it as an array.
> 
> If we introduce a new define N_HRD_PARAMETERS, we make clear our
> intentions.

N_HRD_PARAMETERS -> N_HRD_PARAMS

> 
> This fixes this cocci warning:
> drivers/media/platform/allegro-dvt/nal-hevc.h:102:14-22: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>

With that fixed

Reviewed-by: Michael Tretter <m.tretter@...gutronix.de>

> ---
>  drivers/media/platform/allegro-dvt/nal-hevc.h | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/media/platform/allegro-dvt/nal-hevc.h b/drivers/media/platform/allegro-dvt/nal-hevc.h
> index eb46f12aae80..361e2f55c254 100644
> --- a/drivers/media/platform/allegro-dvt/nal-hevc.h
> +++ b/drivers/media/platform/allegro-dvt/nal-hevc.h
> @@ -96,10 +96,11 @@ struct nal_hevc_vps {
>  	unsigned int extension_data_flag;
>  };
>  
> +#define N_HRD_PARAMS 1
>  struct nal_hevc_sub_layer_hrd_parameters {
> -	unsigned int bit_rate_value_minus1[1];
> -	unsigned int cpb_size_value_minus1[1];
> -	unsigned int cbr_flag[1];
> +	unsigned int bit_rate_value_minus1[N_HRD_PARAMS];
> +	unsigned int cpb_size_value_minus1[N_HRD_PARAMS];
> +	unsigned int cbr_flag[N_HRD_PARAMS];
>  };
>  
>  struct nal_hevc_hrd_parameters {
> 
> -- 
> 2.45.1.288.g0e0cd299f1-goog
> 
>