linux-kernel - Re: [PATCH 02/12] mtd: nand: davinci: check required ti,davinci-chipselect property

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Date:	Tue, 12 Nov 2013 10:50:07 -0500
From:	Santosh Shilimkar <santosh.shilimkar@...com>
To:	"Khoronzhuk, Ivan" <ivan.khoronzhuk@...com>
CC:	Rob Landley <rob@...dley.net>,
	Russell King <linux@....linux.org.uk>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Rob Herring <rob.herring@...xeda.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Kumar Gala <galak@...nel.crashing.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	"Strashko, Grygorii" <grygorii.strashko@...com>
Subject: Re: [PATCH 02/12] mtd: nand: davinci: check required ti,davinci-chipselect
 property

On Monday 11 November 2013 11:53 AM, Khoronzhuk, Ivan wrote:
> The property "ti,davinci-chipselect" is required. So we have to check
> if it is set.
> 
> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...com>
> ---
>  drivers/mtd/nand/davinci_nand.c |   10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
> index d87213f..8e1c88e 100644
> --- a/drivers/mtd/nand/davinci_nand.c
> +++ b/drivers/mtd/nand/davinci_nand.c
> @@ -541,10 +541,14 @@ static struct davinci_nand_pdata
>                                 GFP_KERNEL);
>                 pdev->dev.platform_data = pdata;
>                 if (!pdata)
> -                       return NULL;
> +                       return ERR_PTR(-ENOMEM);
> +
This change don't follow commit message.

>                 if (!of_property_read_u32(pdev->dev.of_node,
>                         "ti,davinci-chipselect", &prop))
>                         pdev->id = prop;
> +               else
> +                       return ERR_PTR(-EINVAL);
> +
So the check already exist but the error case wasn't handled.
This should be reflected in change log.

>                 if (!of_property_read_u32(pdev->dev.of_node,
>                         "ti,davinci-mask-ale", &prop))
>                         pdata->mask_ale = prop;
> @@ -598,6 +602,10 @@ static int __init nand_davinci_probe(struct platform_device *pdev)
>         nand_ecc_modes_t                ecc_mode;
> 
>         pdata = nand_davinci_get_pdata(pdev);
> +       if (IS_ERR(pdata)) {
> +               return PTR_ERR(pdata);
> +       }
> +
Again not related to commit log. You might want to split this patch
then.

Regards,
Santosh

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