linux-kernel - Re: [V5,6/8] media: mtk-jpegdec: add output pic reorder interface

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Date:   Mon, 18 Jul 2022 12:36:16 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Irui Wang <irui.wang@...iatek.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Tzung-Bi Shih <tzungbi@...omium.org>,
        nicolas.dufresne@...labora.com, wenst@...omium.org,
        kyrie wu <kyrie.wu@...iatek.com>
Cc:     Project_Global_Chrome_Upstream_Group@...iatek.com,
        linux-media@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Tomasz Figa <tfiga@...omium.org>, xia.jiang@...iatek.com,
        maoguang.meng@...iatek.com, srv_heupstream@...iatek.com
Subject: Re: [V5,6/8] media: mtk-jpegdec: add output pic reorder interface

Il 16/07/22 11:34, Irui Wang ha scritto:
> From: kyrie wu <kyrie.wu@...iatek.com>
> 
> add output reorder func to reorder the output images
> to ensure the output pic is consistent with the input images.
> 
> Signed-off-by: kyrie wu <kyrie.wu@...iatek.com>
> Signed-off-by: irui wang <irui.wang@...iatek.com>
> 
> ---
>   .../platform/mediatek/jpeg/mtk_jpeg_dec_hw.c  | 49 ++++++++++++++++++-
>   1 file changed, 47 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
> index 590300108bff..c0468cf96d74 100644
> --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
> +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
> @@ -440,6 +440,51 @@ void mtk_jpeg_dec_set_config(void __iomem *base,
>   }
>   EXPORT_SYMBOL_GPL(mtk_jpeg_dec_set_config);
>   
> +static void mtk_jpegdec_put_buf(struct mtk_jpegdec_comp_dev *jpeg)
> +{
> +	struct mtk_jpeg_src_buf *dst_done_buf, *tmp_dst_done_buf;
> +	struct vb2_v4l2_buffer *dst_buffer;
> +	struct list_head *temp_entry;
> +	struct list_head *pos = NULL;
> +	struct mtk_jpeg_ctx *ctx;
> +	unsigned long flags;
> +
> +	ctx = jpeg->hw_param.curr_ctx;
> +	if (unlikely(!ctx)) {
> +		dev_err(jpeg->dev, "comp_jpeg ctx fail !!!\n");
> +		return;
> +	}
> +
> +	dst_buffer = jpeg->hw_param.dst_buffer;
> +	if (!dst_buffer) {
> +		dev_err(jpeg->dev, "comp_jpeg dst_buffer fail !!!\n");
> +		return;
> +	}
> +
> +	dst_done_buf = container_of(dst_buffer, struct mtk_jpeg_src_buf, b);
> +
> +	spin_lock_irqsave(&ctx->done_queue_lock, flags);
> +	list_add_tail(&dst_done_buf->list, &ctx->dst_done_queue);
> +	while (!list_empty(&ctx->dst_done_queue) &&
> +	       (pos != &ctx->dst_done_queue)) {
> +		list_for_each_prev_safe(pos,
> +					temp_entry,
> +					(&ctx->dst_done_queue)) {

This fits in one line, as it results in being 81 columns long, and parenthesis
are redundant for dst_done_queue.

Everything else looks ok to me.

Regards,
Angelo