linux-kernel - Re: [PATCH 05/42] drivers: gpio: bcm-kona: use devm_platform_ioremap

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Message-ID: <20190315081939.zr3vv3a7a6wf7byw@pengutronix.de>
Date:   Fri, 15 Mar 2019 09:19:39 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     "Enrico Weigelt, metux IT consult" <info@...ux.net>
Cc:     linux-kernel@...r.kernel.org, linus.walleij@...aro.org,
        bgolaszewski@...libre.com, andrew@...id.au, f.fainelli@...il.com,
        sbranden@...adcom.com, bcm-kernel-feedback-list@...adcom.com,
        hoan@...amperecomputing.com, orsonzhai@...il.com,
        baolin.wang@...aro.org, zhang.lyra@...il.com,
        keguang.zhang@...il.com, vz@...ia.com, matthias.bgg@...il.com,
        thierry.reding@...il.com, grygorii.strashko@...com,
        ssantosh@...nel.org, khilman@...nel.org, robert.jarzmik@...e.fr,
        yamada.masahiro@...ionext.com, jun.nie@...aro.org,
        shawnguo@...nel.org, linux-gpio@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-pwm@...r.kernel.org,
        linux-omap@...r.kernel.org, linux-tegra@...r.kernel.org,
        kernel@...gutronix.de, Julia Lawall <Julia.Lawall@...6.fr>
Subject: Re: [PATCH 05/42] drivers: gpio: bcm-kona: use
 devm_platform_ioremap_resource()

On Mon, Mar 11, 2019 at 07:54:44PM +0100, Enrico Weigelt, metux IT consult wrote:
> Use the new helper that wraps the calls to platform_get_resource()
> and devm_ioremap_resource() together.
> 
> Signed-off-by: Enrico Weigelt, metux IT consult <info@...ux.net>
> ---
>  drivers/gpio/gpio-bcm-kona.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-bcm-kona.c b/drivers/gpio/gpio-bcm-kona.c
> index c5536a5..9fa6d3a 100644
> --- a/drivers/gpio/gpio-bcm-kona.c
> +++ b/drivers/gpio/gpio-bcm-kona.c
> @@ -568,7 +568,6 @@ static int bcm_kona_gpio_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
>  	const struct of_device_id *match;
> -	struct resource *res;
>  	struct bcm_kona_gpio_bank *bank;
>  	struct bcm_kona_gpio *kona_gpio;
>  	struct gpio_chip *chip;
> @@ -618,8 +617,7 @@ static int bcm_kona_gpio_probe(struct platform_device *pdev)
>  		return -ENXIO;
>  	}
>  
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	kona_gpio->reg_base = devm_ioremap_resource(dev, res);
> +	kona_gpio->reg_base = devm_platform_ioremap_resource(pdev, 0);
>  	if (IS_ERR(kona_gpio->reg_base)) {
>  		ret = -ENXIO;

This should be

	ret = PTR_ERR(kona_gpio->reg_base)

, shouldn't it? (If yes, this is orthogonal to this patch, but still
worth fixing.)

@Julia: Is this something that coccinelle could catch?

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |