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References: <20210514092332.19966-1-aardelean@deviqon.com>
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From:   Bartosz Golaszewski <bgolaszewski@baylibre.com>
Date:   Fri, 21 May 2021 14:46:21 +0200
Message-ID: <CAMpxmJX=nrx6FQ2XVONf+mQWa_HsnQkEk4S-beqgTpxXi80FMQ@mail.gmail.com>
Subject: Re: [PATCH] gpio: gpio-da9055: remove platform_set_drvdata() +
 cleanup probe
To:     Alexandru Ardelean <aardelean@deviqon.com>
Cc:     linux-gpio <linux-gpio@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Support Opensource <support.opensource@diasemi.com>
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On Fri, May 14, 2021 at 11:23 AM Alexandru Ardelean
<aardelean@deviqon.com> wrote:
>
> The platform_set_drvdata() call is only useful if we need to retrieve back
> the private information.
> Since the driver doesn't do that, it's not useful to have it.
>
> If this is removed, we can also just do a direct return on
> devm_gpiochip_add_data(). We don't need to print that this call failed as
> there are other ways to log/see this during probe.
>
> Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
> ---
>  drivers/gpio/gpio-da9055.c | 11 +----------
>  1 file changed, 1 insertion(+), 10 deletions(-)
>
> diff --git a/drivers/gpio/gpio-da9055.c b/drivers/gpio/gpio-da9055.c
> index 6ad0c37b862e..49446a030f10 100644
> --- a/drivers/gpio/gpio-da9055.c
> +++ b/drivers/gpio/gpio-da9055.c
> @@ -133,7 +133,6 @@ static int da9055_gpio_probe(struct platform_device *pdev)
>  {
>         struct da9055_gpio *gpio;
>         struct da9055_pdata *pdata;
> -       int ret;
>
>         gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
>         if (!gpio)
> @@ -146,15 +145,7 @@ static int da9055_gpio_probe(struct platform_device *pdev)
>         if (pdata && pdata->gpio_base)
>                 gpio->gp.base = pdata->gpio_base;
>
> -       ret = devm_gpiochip_add_data(&pdev->dev, &gpio->gp, gpio);
> -       if (ret < 0) {
> -               dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
> -               return ret;
> -       }
> -
> -       platform_set_drvdata(pdev, gpio);
> -
> -       return 0;
> +       return devm_gpiochip_add_data(&pdev->dev, &gpio->gp, gpio);
>  }
>
>  static struct platform_driver da9055_gpio_driver = {
> --
> 2.31.1
>

Patch applied, thanks!

Bart