linux-kernel - Re: [PATCH 08/11] i2c: sh_mobile: Use devm_platform_get_and_ioremap

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Message-ID: <CAMuHMdXCibwJ0jBYu3Cr3-hW-GykQ7UANeKo=qjJAbQTtmah3A@mail.gmail.com>
Date:   Wed, 5 Jul 2023 16:44:22 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Yangtao Li <frank.li@...o.com>
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Andi Shyti <andi.shyti@...nel.org>,
        linux-renesas-soc@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 08/11] i2c: sh_mobile: Use devm_platform_get_and_ioremap_resource()

Hi Yangtao,

On Wed, Jul 5, 2023 at 3:56 PM Yangtao Li <frank.li@...o.com> wrote:
> Convert platform_get_resource(), devm_ioremap_resource() to a single
> call to devm_platform_get_and_ioremap_resource(), as this is exactly
> what this function does.
>
> Signed-off-by: Yangtao Li <frank.li@...o.com>

Thanks for your patch!

> --- a/drivers/i2c/busses/i2c-sh_mobile.c
> +++ b/drivers/i2c/busses/i2c-sh_mobile.c
> @@ -893,12 +893,10 @@ static int sh_mobile_i2c_probe(struct platform_device *dev)
>         pd->dev = &dev->dev;
>         platform_set_drvdata(dev, pd);
>
> -       res = platform_get_resource(dev, IORESOURCE_MEM, 0);
> -
> -       pd->res = res;
> -       pd->reg = devm_ioremap_resource(&dev->dev, res);
> +       pd->reg = devm_platform_get_and_ioremap_resource(pdev, 0, &res);

"pdev" does not exist in this context.
Please try to at least compile-test your patches before submitting them.

>         if (IS_ERR(pd->reg))
>                 return PTR_ERR(pd->reg);
> +       pd->res = res;

While at it, you could get rid of "res", and replace it by "pd->res" in the
above call to devm_platform_get_and_ioremap_resource().

>
>         ret = of_property_read_u32(dev->dev.of_node, "clock-frequency", &bus_speed);
>         pd->bus_speed = (ret || !bus_speed) ? I2C_MAX_STANDARD_MODE_FREQ : bus_speed;

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds