linux-kernel - Re: [PATCH] phy: hix5hd2-sata: Convert to use devm_ioremap

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Date:	Mon, 02 Mar 2015 15:42:34 +0800
From:	zhangfei <zhangfei.gao@...aro.org>
To:	Axel Lin <axel.lin@...ics.com>,
	Kishon Vijay Abraham I <kishon@...com>
CC:	Jiancheng Xue <xuejiancheng@...wei.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] phy: hix5hd2-sata: Convert to use devm_ioremap_resource



On 03/02/2015 02:32 PM, Axel Lin wrote:
> devm_ioremap_resource() also has sanity check for the res argument which is
> missed in current code.

I remember we can not use devm_ioremap_resource here, because the memory 
region is shared with sata controller.
And devm_request_mem_region would fail.
So we directly use devm_ioremap here.

>
> Signed-off-by: Axel Lin <axel.lin@...ics.com>
> ---
>   drivers/phy/phy-hix5hd2-sata.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/phy/phy-hix5hd2-sata.c b/drivers/phy/phy-hix5hd2-sata.c
> index 34915b4..798adcf 100644
> --- a/drivers/phy/phy-hix5hd2-sata.c
> +++ b/drivers/phy/phy-hix5hd2-sata.c
> @@ -147,9 +147,9 @@ static int hix5hd2_sata_phy_probe(struct platform_device *pdev)
>   		return -ENOMEM;
>
>   	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	priv->base = devm_ioremap(dev, res->start, resource_size(res));
> -	if (!priv->base)
> -		return -ENOMEM;
> +	priv->base = devm_ioremap_resource(dev, res);
> +	if (IS_ERR(priv->base))
> +		return PTR_ERR(priv->base);
>
>   	priv->peri_ctrl = syscon_regmap_lookup_by_phandle(dev->of_node,
>   					"hisilicon,peripheral-syscon");
>
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