linux-kernel - Re: [PATCH 04/24] Input: gpio-vibra

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Message-ID: <CAHp75Vey_w7m4TZM9+=df-FMO6YW5DiSMQsupZsMb92Awg_x1Q@mail.gmail.com>
Date:   Thu, 27 Aug 2020 12:03:52 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bastien Nocera <hadess@...ess.net>,
        Sangwon Jee <jeesw@...fas.com>,
        Eugen Hristev <eugen.hristev@...rochip.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-input <linux-input@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>
Subject: Re: [PATCH 04/24] Input: gpio-vibra - Simplify with dev_err_probe()

On Wed, Aug 26, 2020 at 9:20 PM Krzysztof Kozlowski <krzk@...nel.org> wrote:
>
> Common pattern of handling deferred probe can be simplified with
> dev_err_probe().  Less code and also it prints the error value.

>         vibrator->vcc = devm_regulator_get(&pdev->dev, "vcc");
>         err = PTR_ERR_OR_ZERO(vibrator->vcc);
> -       if (err) {
> -               if (err != -EPROBE_DEFER)
> -                       dev_err(&pdev->dev, "Failed to request regulator: %d\n",
> -                               err);
> -               return err;
> -       }
> +       if (err)
> +               return dev_err_probe(&pdev->dev, err, "Failed to request regulator\n");

Can it be rather
  if (IS_ERR())
    return dev_err_probe(dev, PTR_ERR());
w/o err be involved?

>         vibrator->gpio = devm_gpiod_get(&pdev->dev, "enable", GPIOD_OUT_LOW);
>         err = PTR_ERR_OR_ZERO(vibrator->gpio);
> -       if (err) {
> -               if (err != -EPROBE_DEFER)
> -                       dev_err(&pdev->dev, "Failed to request main gpio: %d\n",
> -                               err);
> -               return err;
> -       }
> +       if (err)
> +               return dev_err_probe(&pdev->dev, err, "Failed to request main gpio\n");

Ditto.


-- 
With Best Regards,
Andy Shevchenko