linux-kernel - Re: [PATCH v2 11/18] iio: chemical: scd30: Simplify with dev_err

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Date:   Thu, 27 Aug 2020 22:55:25 +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 11/18] iio: chemical: scd30: 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>
> Acked-by: Tomasz Duszynski <tomasz.duszynski@...akon.com>
>
> ---
>
> Changes since v1:
> 1. Wrap dev_err_probe() lines at 100 character
> 2. Add Ack
> ---
>  drivers/iio/chemical/scd30_core.c | 9 ++-------
>  1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/iio/chemical/scd30_core.c b/drivers/iio/chemical/scd30_core.c
> index eac76972f83e..4d0d798c7cd3 100644
> --- a/drivers/iio/chemical/scd30_core.c
> +++ b/drivers/iio/chemical/scd30_core.c
> @@ -705,13 +705,8 @@ int scd30_probe(struct device *dev, int irq, const char *name, void *priv,
>         indio_dev->available_scan_masks = scd30_scan_masks;
>
>         state->vdd = devm_regulator_get(dev, "vdd");
> -       if (IS_ERR(state->vdd)) {
> -               if (PTR_ERR(state->vdd) == -EPROBE_DEFER)
> -                       return -EPROBE_DEFER;
> -
> -               dev_err(dev, "failed to get regulator\n");
> -               return PTR_ERR(state->vdd);
> -       }
> +       if (IS_ERR(state->vdd))
> +               return dev_err_probe(dev, PTR_ERR(state->vdd), "failed to get regulator\n");
>
>         ret = regulator_enable(state->vdd);
>         if (ret)
> --
> 2.17.1
>


-- 
With Best Regards,
Andy Shevchenko