linux-kernel - Re: [PATCH v2 12/18] iio: dac: dpot-dac: Simplify with dev_err

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Message-ID: <CAHp75VezGhnwphb4JAkVeQtGQhDoH-AtkA2b-GvSwGFta6y+Jg@mail.gmail.com>
Date:   Thu, 27 Aug 2020 22:55:51 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Peter Rosin <peda@...ntia.se>, Kukjin Kim <kgene@...nel.org>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Beniamin Bia <beniamin.bia@...log.com>,
        Tomasz Duszynski <tomasz.duszynski@...akon.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-iio <linux-iio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        linux-samsung-soc@...r.kernel.org,
        linux-amlogic@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH v2 12/18] iio: dac: dpot-dac: Simplify with dev_err_probe()

On Thu, Aug 27, 2020 at 10:28 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.

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>

> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> ---
>  drivers/iio/dac/dpot-dac.c | 16 ++++++----------
>  1 file changed, 6 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/iio/dac/dpot-dac.c b/drivers/iio/dac/dpot-dac.c
> index be61c3b01e8b..2258535b8a42 100644
> --- a/drivers/iio/dac/dpot-dac.c
> +++ b/drivers/iio/dac/dpot-dac.c
> @@ -183,18 +183,14 @@ static int dpot_dac_probe(struct platform_device *pdev)
>         indio_dev->num_channels = 1;
>
>         dac->vref = devm_regulator_get(dev, "vref");
> -       if (IS_ERR(dac->vref)) {
> -               if (PTR_ERR(dac->vref) != -EPROBE_DEFER)
> -                       dev_err(&pdev->dev, "failed to get vref regulator\n");
> -               return PTR_ERR(dac->vref);
> -       }
> +       if (IS_ERR(dac->vref))
> +               return dev_err_probe(&pdev->dev, PTR_ERR(dac->vref),
> +                                    "failed to get vref regulator\n");
>
>         dac->dpot = devm_iio_channel_get(dev, "dpot");
> -       if (IS_ERR(dac->dpot)) {
> -               if (PTR_ERR(dac->dpot) != -EPROBE_DEFER)
> -                       dev_err(dev, "failed to get dpot input channel\n");
> -               return PTR_ERR(dac->dpot);
> -       }
> +       if (IS_ERR(dac->dpot))
> +               return dev_err_probe(&pdev->dev, PTR_ERR(dac->dpot),
> +                                    "failed to get dpot input channel\n");
>
>         ret = iio_get_channel_type(dac->dpot, &type);
>         if (ret < 0)
> --
> 2.17.1
>


-- 
With Best Regards,
Andy Shevchenko