Re: [PATCH 5/8] ata: sata_rcar: Convert to devm_platform_ioremap_resource()

[Sergey Shtylyov]

On 7/6/23 3:42 PM, Yangtao Li wrote:

> Use devm_platform_ioremap_resource() to simplify code.
> 
> Signed-off-by: Yangtao Li <frank.li@xxxxxxxx>
> ---
>  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;

   This unneeded init of ret should be in a separate patch.

>  
>  	irq = platform_get_irq(pdev, 0);
>  	if (irq < 0)
>  		return irq;
> -	if (!irq)
> -		return -EINVAL;

   This is a separate issue too. I thought I've removed this myself
but apparently not, the commit [1] took shamefully long time to merge... :-(

[...]
> @@ -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;

   The (documented) change looks OK.


[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ce753ad1549cbe9ccaea4c06a1f5fa47432c8289

MBR, Seregy