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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Mon, 5 Sep 2022 13:59:44 +0300
Message-ID: <CAHp75VdMr7wru-2hD1HH3OS5JTNdzt6VRqB6OFoCp2JkiuiTjw@mail.gmail.com>
Subject: Re: [PATCH v1 04/11] usb: phy: tegra: switch to using devm_gpiod_get()
To:     Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc:     Thierry Reding <thierry.reding@gmail.com>,
        Mark Brown <broonie@kernel.org>,
        Matti Vaittinen <mazziesaccount@gmail.com>,
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        Wim Van Sebroeck <wim@linux-watchdog.org>,
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On Mon, Sep 5, 2022 at 9:32 AM Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
>
> I would like to stop exporting OF-specific devm_gpiod_get_from_of_node()
> so that gpiolib can be cleaned a bit, so let's switch to the generic
> device property API.
>
> I believe that the only reason the driver, instead of the standard
> devm_gpiod_get(), used devm_gpiod_get_from_of_node() is because it
> wanted to set up a pretty consumer name for the GPIO, and we now have
> a special API for that.

...

> -               gpiod = devm_gpiod_get_from_of_node(&pdev->dev, np,
> -                                                   "nvidia,phy-reset-gpio",
> -                                                   0, GPIOD_OUT_HIGH,
> -                                                   "ulpi_phy_reset_b");
> +               gpiod = devm_gpiod_get(&pdev->dev, "nvidia,phy-reset",
> +                                      GPIOD_OUT_HIGH);
>                 err = PTR_ERR_OR_ZERO(gpiod);

What does _OR_ZERO mean now?

>                 if (err) {
>                         dev_err(&pdev->dev,
>                                 "Request failed for reset GPIO: %d\n", err);
>                         return err;
>                 }


-- 
With Best Regards,
Andy Shevchenko