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Subject: Re: [PATCH 6/8] pata: ixp4xx: Use
 devm_platform_get_and_ioremap_resource()
To:     Yangtao Li <frank.li@vivo.com>, Damien Le Moal <dlemoal@kernel.org>
CC:     <linux-ide@vger.kernel.org>, <linux-kernel@vger.kernel.org>
References: <20230706124239.23366-1-frank.li@vivo.com>
 <20230706124239.23366-6-frank.li@vivo.com>
From:   Sergey Shtylyov <s.shtylyov@omp.ru>
Organization: Open Mobile Platform
Message-ID: <f264a261-d8c7-5220-d8cd-f59e04230cb2@omp.ru>
Date:   Fri, 7 Jul 2023 21:58:09 +0300
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On 7/6/23 3:42 PM, Yangtao Li wrote:

> Convert platform_get_resource(), devm_ioremap_resource() to a single
> call to devm_platform_get_and_ioremap_resource(), as this is exactly
> what this function does.
> 
> Signed-off-by: Yangtao Li <frank.li@vivo.com>
> ---
>  drivers/ata/pata_ixp4xx_cf.c | 24 +++++++++---------------
>  1 file changed, 9 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c
> index b1daa4d3fcd9..246bb4f8f1f7 100644
> --- a/drivers/ata/pata_ixp4xx_cf.c
> +++ b/drivers/ata/pata_ixp4xx_cf.c
[...]
> @@ -271,18 +265,18 @@ static int ixp4xx_pata_probe(struct platform_device *pdev)
>  	if (ret)
>  		return ret;
>  
> -	ixpp->cmd = devm_ioremap_resource(dev, cmd);
> -	ixpp->ctl = devm_ioremap_resource(dev, ctl);
> -	if (IS_ERR(ixpp->cmd) || IS_ERR(ixpp->ctl))
> -		return -ENOMEM;
> +	ixpp->cmd = devm_platform_get_and_ioremap_resource(pdev, 0, &cmd);
> +	if (IS_ERR(ixpp->cmd))
> +		return PTR_ERR(ixpp->cmd);
> +
> +	ixpp->ctl = devm_platform_get_and_ioremap_resource(pdev, 1, &ctl);
> +	if (IS_ERR(ixpp->ctl))
> +		return PTR_ERR(ixpp->ctl);

   Looks good...

>  
>  	irq = platform_get_irq(pdev, 0);
> -	if (irq > 0)
> -		irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);
> -	else if (irq < 0)
> +	if (irq < 0)
>  		return irq;
> -	else
> -		return -EINVAL;
> +	irq_set_irq_type(irq, IRQ_TYPE_EDGE_RISING);

   This change also looks good (but undescribed!), however it should be
done in a separate patch.
   For the future, try to follow a simple rule: do one thing per patch.
Oh, and don't forget to describe everything you do in a patch...

[...]

MBR, Sergey