linux-kernel - Re: [PATCH 5/5] dmaengine: sprd: Don't set chancnt

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Date:   Tue, 14 Mar 2023 11:51:25 +0800
From:   Baolin Wang <baolin.wang@...ux.alibaba.com>
To:     Jisheng Zhang <jszhang@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Vinod Koul <vkoul@...nel.org>,
        Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Sinan Kaya <okaya@...nel.org>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Orson Zhai <orsonzhai@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>
Cc:     dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 5/5] dmaengine: sprd: Don't set chancnt



On 3/14/2023 1:02 AM, Jisheng Zhang wrote:
> The dma framework will calculate the dma channels chancnt, setting it
> outself is wrong.
> 
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>

LGTM. Thanks.
Reviewed-by: Baolin Wang <baolin.wang@...ux.alibaba.com>

> ---
>   drivers/dma/sprd-dma.c | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c
> index 474d3ba8ec9f..2b639adb48ba 100644
> --- a/drivers/dma/sprd-dma.c
> +++ b/drivers/dma/sprd-dma.c
> @@ -1169,7 +1169,6 @@ static int sprd_dma_probe(struct platform_device *pdev)
>   
>   	dma_cap_set(DMA_MEMCPY, sdev->dma_dev.cap_mask);
>   	sdev->total_chns = chn_count;
> -	sdev->dma_dev.chancnt = chn_count;
>   	INIT_LIST_HEAD(&sdev->dma_dev.channels);
>   	INIT_LIST_HEAD(&sdev->dma_dev.global_node);
>   	sdev->dma_dev.dev = &pdev->dev;