linux-kernel - Re: [PATCH v2] mtd: fsmc_nand: fix error return code in fsmc_nand

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Date:	Tue, 14 May 2013 09:30:14 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Wei Yongjun <weiyj.lk@...il.com>
Cc:	dwmw2@...radead.org, grant.likely@...aro.org,
	rob.herring@...xeda.com, artem.bityutskiy@...ux.intel.com,
	linus.walleij@...aro.org, vipin.kumar@...com,
	yongjun_wei@...ndmicro.com.cn, linux-mtd@...ts.infradead.org,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mtd: fsmc_nand: fix error return code in fsmc_nand_probe()

On 14 May 2013 08:00, Wei Yongjun <weiyj.lk@...il.com> wrote:
> From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
>
> Fix to return -ENODEV in the dma channel request error handling
> case instead of 0, as done elsewhere in this function.
>
> Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
> ---
> v1 -> v2: set ret for error cases only
> ---
>  drivers/mtd/nand/fsmc_nand.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c
> index 0e5a1d9..95e1768 100644
> --- a/drivers/mtd/nand/fsmc_nand.c
> +++ b/drivers/mtd/nand/fsmc_nand.c
> @@ -1035,12 +1035,14 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
>                 host->read_dma_chan = dma_request_channel(mask, filter,
>                                 pdata->read_dma_priv);
>                 if (!host->read_dma_chan) {
> +                       ret = -ENODEV;
>                         dev_err(&pdev->dev, "Unable to get read dma channel\n");
>                         goto err_req_read_chnl;
>                 }
>                 host->write_dma_chan = dma_request_channel(mask, filter,
>                                 pdata->write_dma_priv);
>                 if (!host->write_dma_chan) {
> +                       ret = -ENODEV;
>                         dev_err(&pdev->dev, "Unable to get write dma channel\n");
>                         goto err_req_write_chnl;
>                 }
>

Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
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