linux-kernel - Re: [PATCH 06/17] clk: tegra: convert to devm_platform_ioremap

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Date:   Wed, 11 Dec 2019 11:49:01 +0200
From:   Peter De Schrijver <pdeschrijver@...dia.com>
To:     Yangtao Li <tiny.windzz@...il.com>
CC:     <afaerber@...e.de>, <manivannan.sadhasivam@...aro.org>,
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Subject: Re: [PATCH 06/17] clk: tegra: convert to
 devm_platform_ioremap_resource

On Mon, Dec 09, 2019 at 07:57:38PM +0000, Yangtao Li wrote:
> External email: Use caution opening links or attachments
> 
> 

Acked-by:  Peter De Schrijver <pdeschrijver@...dia.com>

> Use devm_platform_ioremap_resource() to simplify code.
> 
> Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
> ---
>  drivers/clk/tegra/clk-dfll.c | 34 ++++------------------------------
>  1 file changed, 4 insertions(+), 30 deletions(-)
> 
> diff --git a/drivers/clk/tegra/clk-dfll.c b/drivers/clk/tegra/clk-dfll.c
> index c051d92c2bbf..070a2957e119 100644
> --- a/drivers/clk/tegra/clk-dfll.c
> +++ b/drivers/clk/tegra/clk-dfll.c
> @@ -1935,7 +1935,6 @@ static int dfll_fetch_common_params(struct tegra_dfll *td)
>  int tegra_dfll_register(struct platform_device *pdev,
>                         struct tegra_dfll_soc_data *soc)
>  {
> -       struct resource *mem;
>         struct tegra_dfll *td;
>         int ret;
> 
> @@ -1985,51 +1984,26 @@ int tegra_dfll_register(struct platform_device *pdev,
>                 return ret;
>         }
> 
> -       mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -       if (!mem) {
> -               dev_err(td->dev, "no control register resource\n");
> -               return -ENODEV;
> -       }
> -
> -       td->base = devm_ioremap(td->dev, mem->start, resource_size(mem));
> +       td->base = devm_platform_ioremap_resource(pdev, 0);
>         if (!td->base) {
>                 dev_err(td->dev, "couldn't ioremap DFLL control registers\n");
>                 return -ENODEV;
>         }
> 
> -       mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
> -       if (!mem) {
> -               dev_err(td->dev, "no i2c_base resource\n");
> -               return -ENODEV;
> -       }
> -
> -       td->i2c_base = devm_ioremap(td->dev, mem->start, resource_size(mem));
> +       td->i2c_base = devm_platform_ioremap_resource(pdev, 1);
>         if (!td->i2c_base) {
>                 dev_err(td->dev, "couldn't ioremap i2c_base resource\n");
>                 return -ENODEV;
>         }
> 
> -       mem = platform_get_resource(pdev, IORESOURCE_MEM, 2);
> -       if (!mem) {
> -               dev_err(td->dev, "no i2c_controller_base resource\n");
> -               return -ENODEV;
> -       }
> -
> -       td->i2c_controller_base = devm_ioremap(td->dev, mem->start,
> -                                              resource_size(mem));
> +       td->i2c_controller_base = devm_platform_ioremap_resource(pdev, 2);
>         if (!td->i2c_controller_base) {
>                 dev_err(td->dev,
>                         "couldn't ioremap i2c_controller_base resource\n");
>                 return -ENODEV;
>         }
> 
> -       mem = platform_get_resource(pdev, IORESOURCE_MEM, 3);
> -       if (!mem) {
> -               dev_err(td->dev, "no lut_base resource\n");
> -               return -ENODEV;
> -       }
> -
> -       td->lut_base = devm_ioremap(td->dev, mem->start, resource_size(mem));
> +       td->lut_base = devm_platform_ioremap_resource(pdev, 3);
>         if (!td->lut_base) {
>                 dev_err(td->dev,
>                         "couldn't ioremap lut_base resource\n");
> --
> 2.17.1
>