linux-kernel - Re: [PATCH 01/12] gpio: mockup: use devm_irq_alloc

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Date:   Wed, 8 Mar 2017 09:21:31 +0100
From:   Bamvor Zhang Jian <bamvor.zhangjian@...aro.org>
To:     Bartosz Golaszewski <bgolaszewski@...libre.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Alexandre Courbot <gnurou@...il.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Kevin Hilman <khilman@...nel.org>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        linux-gpio@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>,
        linux-omap@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <marc.zyngier@....com>
Subject: Re: [PATCH 01/12] gpio: mockup: use devm_irq_alloc_descs()

On 4 March 2017 at 17:23, Bartosz Golaszewski <bgolaszewski@...libre.com> wrote:
> Use the resource managed variant of irq_alloc_descs(). This allows us
> to remove gpio_mockup_remove().
>
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
Reviewed-by: Bamvor Jian Zhang <bamvor.zhangjian@...aro.org>

> ---
>  drivers/gpio/gpio-mockup.c | 16 +---------------
>  1 file changed, 1 insertion(+), 15 deletions(-)
>
> diff --git a/drivers/gpio/gpio-mockup.c b/drivers/gpio/gpio-mockup.c
> index 06dac72..37c2d69 100644
> --- a/drivers/gpio/gpio-mockup.c
> +++ b/drivers/gpio/gpio-mockup.c
> @@ -169,7 +169,7 @@ static int gpio_mockup_irqchip_setup(struct device *dev,
>         struct gpio_chip *gc = &chip->gc;
>         int irq_base, i;
>
> -       irq_base = irq_alloc_descs(-1, 0, gc->ngpio, 0);
> +       irq_base = devm_irq_alloc_descs(dev, -1, 0, gc->ngpio, 0);
>         if (irq_base < 0)
>                 return irq_base;
>
> @@ -373,25 +373,11 @@ static int gpio_mockup_probe(struct platform_device *pdev)
>         return 0;
>  }
>
> -static int gpio_mockup_remove(struct platform_device *pdev)
> -{
> -       struct gpio_mockup_chip *chips;
> -       int i;
> -
> -       chips = platform_get_drvdata(pdev);
> -
> -       for (i = 0; i < gpio_mockup_params_nr >> 1; i++)
> -               irq_free_descs(chips[i].gc.irq_base, chips[i].gc.ngpio);
> -
> -       return 0;
> -}
> -
>  static struct platform_driver gpio_mockup_driver = {
>         .driver = {
>                 .name = GPIO_MOCKUP_NAME,
>         },
>         .probe = gpio_mockup_probe,
> -       .remove = gpio_mockup_remove,
>  };
>
>  static struct platform_device *pdev;
> --
> 2.9.3
>