linux-kernel - Re: [PATCH 4/8] fpga: socfpga-a10: Convert to devm_platform_ioremap

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Date:   Mon, 10 Jul 2023 16:36:20 +0800
From:   Xu Yilun <yilun.xu@...el.com>
To:     Yangtao Li <frank.li@...o.com>
Cc:     Moritz Fischer <mdf@...nel.org>, Wu Hao <hao.wu@...el.com>,
        Tom Rix <trix@...hat.com>, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/8] fpga: socfpga-a10: Convert to
 devm_platform_ioremap_resource()

On 2023-07-05 at 17:46:51 +0800, Yangtao Li wrote:
> Use devm_platform_ioremap_resource() to simplify code.
> 
> Signed-off-by: Yangtao Li <frank.li@...o.com>
> ---
>  drivers/fpga/socfpga-a10.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/fpga/socfpga-a10.c b/drivers/fpga/socfpga-a10.c
> index ac8e89b8a5cc..b7b6e0bdb3d9 100644
> --- a/drivers/fpga/socfpga-a10.c
> +++ b/drivers/fpga/socfpga-a10.c
> @@ -471,7 +471,6 @@ static int socfpga_a10_fpga_probe(struct platform_device *pdev)
>  	struct a10_fpga_priv *priv;
>  	void __iomem *reg_base;
>  	struct fpga_manager *mgr;
> -	struct resource *res;
>  	int ret;
>  
>  	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
> @@ -479,14 +478,12 @@ static int socfpga_a10_fpga_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	/* First mmio base is for register access */
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	reg_base = devm_ioremap_resource(dev, res);
> +	reg_base = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(reg_base))
>  		return PTR_ERR(reg_base);
>  
>  	/* Second mmio base is for writing FPGA image data */
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> -	priv->fpga_data_addr = devm_ioremap_resource(dev, res);
> +	priv->fpga_data_addr = devm_platform_ioremap_resource(pdev, 1);
>  	if (IS_ERR(priv->fpga_data_addr))
>  		return PTR_ERR(priv->fpga_data_addr);
>  
> @@ -494,7 +491,7 @@ static int socfpga_a10_fpga_probe(struct platform_device *pdev)
>  	priv->regmap = devm_regmap_init_mmio(dev, reg_base,
>  					     &socfpga_a10_fpga_regmap_config);
>  	if (IS_ERR(priv->regmap))
> -		return -ENODEV;
> +		return PTR_ERR(priv->regmap);

It's good. But please seperate the patch and specify in changelog.

>  
>  	priv->clk = devm_clk_get(dev, NULL);
>  	if (IS_ERR(priv->clk)) {
> -- 
> 2.39.0
>