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

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Date:   Thu, 27 Aug 2020 20:40:33 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
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 Thu, Aug 27, 2020 at 12:03:52PM +0300, Andy Shevchenko wrote:
> 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?

Good point.

Best regards,
Krzysztof