linux-kernel - Re: [PATCH 2/7] media: hantro: HEVC: Fix auxilary buffer size calculation

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Message-ID: <Yr3eVDFjPBrvi5Td@eze-laptop>
Date:   Thu, 30 Jun 2022 14:33:08 -0300
From:   Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
To:     Benjamin Gaignard <benjamin.gaignard@...labora.com>
Cc:     mchehab@...nel.org, hverkuil@...all.nl, p.zabel@...gutronix.de,
        gregkh@...uxfoundation.org, mripard@...nel.org,
        paul.kocialkowski@...tlin.com, wens@...e.org,
        jernej.skrabec@...il.com, samuel@...lland.org,
        nicolas.dufresne@...labora.com, andrzej.p@...labora.com,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org, linux-staging@...ts.linux.dev,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        kernel@...labora.com
Subject: Re: [PATCH 2/7] media: hantro: HEVC: Fix auxilary buffer size
 calculation

Hi Benjamin,

On Fri, Jun 17, 2022 at 01:57:57PM +0200, Benjamin Gaignard wrote:
> SAO and FILTER buffers size depend of the bit depth.
> Make sure we have enough space for 10bit bitstreams.
> 
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>

Reviewed-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>

Thanks,
Ezequiel

> ---
>  drivers/staging/media/hantro/hantro_hevc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/staging/media/hantro/hantro_hevc.c b/drivers/staging/media/hantro/hantro_hevc.c
> index dcb5c8703b6e..e06837108a09 100644
> --- a/drivers/staging/media/hantro/hantro_hevc.c
> +++ b/drivers/staging/media/hantro/hantro_hevc.c
> @@ -104,7 +104,7 @@ static int tile_buffer_reallocate(struct hantro_ctx *ctx)
>  		hevc_dec->tile_bsd.cpu = NULL;
>  	}
>  
> -	size = VERT_FILTER_RAM_SIZE * height64 * (num_tile_cols - 1);
> +	size = (VERT_FILTER_RAM_SIZE * height64 * (num_tile_cols - 1) * ctx->bit_depth) / 8;
>  	hevc_dec->tile_filter.cpu = dma_alloc_coherent(vpu->dev, size,
>  						       &hevc_dec->tile_filter.dma,
>  						       GFP_KERNEL);
> @@ -112,7 +112,7 @@ static int tile_buffer_reallocate(struct hantro_ctx *ctx)
>  		goto err_free_tile_buffers;
>  	hevc_dec->tile_filter.size = size;
>  
> -	size = VERT_SAO_RAM_SIZE * height64 * (num_tile_cols - 1);
> +	size = (VERT_SAO_RAM_SIZE * height64 * (num_tile_cols - 1) * ctx->bit_depth) / 8;
>  	hevc_dec->tile_sao.cpu = dma_alloc_coherent(vpu->dev, size,
>  						    &hevc_dec->tile_sao.dma,
>  						    GFP_KERNEL);
> -- 
> 2.32.0

>