linux-kernel - Re: [PATCH 5/8] ata: sata_rcar: Convert to devm_platform_ioremap

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Message-ID: <31792407-2990-6f31-e2ec-aad81c8870ee@kernel.org>
Date:   Fri, 7 Jul 2023 08:37:43 +0900
From:   Damien Le Moal <dlemoal@...nel.org>
To:     Yangtao Li <frank.li@...o.com>, Sergey Shtylyov <s.shtylyov@....ru>
Cc:     linux-ide@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/8] ata: sata_rcar: Convert to
 devm_platform_ioremap_resource()

On 7/6/23 21:42, Yangtao Li wrote:
> Use devm_platform_ioremap_resource() to simplify code.
> 
> Signed-off-by: Yangtao Li <frank.li@...o.com>
> ---
>  drivers/ata/sata_rcar.c | 9 ++-------
>  1 file changed, 2 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/ata/sata_rcar.c b/drivers/ata/sata_rcar.c
> index 34790f15c1b8..63f8337c2a98 100644
> --- a/drivers/ata/sata_rcar.c
> +++ b/drivers/ata/sata_rcar.c
> @@ -861,15 +861,11 @@ static int sata_rcar_probe(struct platform_device *pdev)
>  	struct device *dev = &pdev->dev;
>  	struct ata_host *host;
>  	struct sata_rcar_priv *priv;
> -	struct resource *mem;
> -	int irq;
> -	int ret = 0;
> +	int irq, ret;
>  
>  	irq = platform_get_irq(pdev, 0);
>  	if (irq < 0)
>  		return irq;
> -	if (!irq)
> -		return -EINVAL;

Same comment as Geert: this is OK to remove, but make that a different
patch.

>  
>  	priv = devm_kzalloc(dev, sizeof(struct sata_rcar_priv), GFP_KERNEL);
>  	if (!priv)
> @@ -890,8 +886,7 @@ static int sata_rcar_probe(struct platform_device *pdev)
>  
>  	host->private_data = priv;
>  
> -	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	priv->base = devm_ioremap_resource(dev, mem);
> +	priv->base = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(priv->base)) {
>  		ret = PTR_ERR(priv->base);
>  		goto err_pm_put;

-- 
Damien Le Moal
Western Digital Research