linux-kernel - Re: [PATCH 7/7] drivers/gpio: don't check resource with devm_ioremap

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Message-ID: <CACRpkdYymB4i7Ju5MMNXWVe5nB6_NbWHwrPbOK2KeT0Ji-RzQg@mail.gmail.com>
Date:	Wed, 15 Jan 2014 10:28:13 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Wolfram Sang <wsa@...-dreams.de>, Sekhar Nori <nsekhar@...com>,
	Kevin Hilman <khilman@...aro.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Alexandre Courbot <gnurou@...il.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH 7/7] drivers/gpio: don't check resource with devm_ioremap_resource

On Tue, Jan 14, 2014 at 12:58 PM, Wolfram Sang <wsa@...-dreams.de> wrote:

> devm_ioremap_resource does sanity checks on the given resource. No need to
> duplicate this in the driver.
>
> Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
> ---
>
> Should go via subsystem tree
>
>  drivers/gpio/gpio-davinci.c | 5 -----
>  1 file changed, 5 deletions(-)
>
> diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
> index 84be701..a5e1a56 100644
> --- a/drivers/gpio/gpio-davinci.c
> +++ b/drivers/gpio/gpio-davinci.c
> @@ -172,11 +172,6 @@ static int davinci_gpio_probe(struct platform_device *pdev)
>         }
>
>         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -       if (!res) {
> -               dev_err(dev, "Invalid memory resource\n");
> -               return -EBUSY;
> -       }
> -
>         gpio_base = devm_ioremap_resource(dev, res);
>         if (IS_ERR(gpio_base))
>                 return PTR_ERR(gpio_base);

Acked-by: Linus Walleij <linus.walleij@...aro.org>

The DaVinci maintainers are queuing GPIO patches for their driver
for this merge window, so requesting them to apply this patch.

Yours,
Linus Walleij
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