linux-kernel - Re: [PATCH v2 18/18] iio: magnetometer: iio-mux: Simplify with dev_err

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Message-ID: <CAHp75Vc4R_PkVSYFGNr0UO5yJ+dLGhVV-G7vznGnNu_aCVoTVQ@mail.gmail.com>
Date:   Thu, 27 Aug 2020 23:02:08 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        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>,
        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 18/18] iio: magnetometer: iio-mux: Simplify with dev_err_probe()

On Thu, Aug 27, 2020 at 10:29 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/multiplexer/iio-mux.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/iio/multiplexer/iio-mux.c b/drivers/iio/multiplexer/iio-mux.c
> index 6910218fdb00..d219d4a86657 100644
> --- a/drivers/iio/multiplexer/iio-mux.c
> +++ b/drivers/iio/multiplexer/iio-mux.c
> @@ -354,11 +354,8 @@ static int mux_probe(struct platform_device *pdev)
>                 return -ENODEV;
>
>         parent = devm_iio_channel_get(dev, "parent");
> -       if (IS_ERR(parent)) {
> -               if (PTR_ERR(parent) != -EPROBE_DEFER)
> -                       dev_err(dev, "failed to get parent channel\n");
> -               return PTR_ERR(parent);
> -       }
> +       if (IS_ERR(parent))
> +               return dev_err_probe(dev, PTR_ERR(parent), "failed to get parent channel\n");
>
>         sizeof_ext_info = iio_get_channel_ext_info_count(parent);
>         if (sizeof_ext_info) {
> --
> 2.17.1
>


-- 
With Best Regards,
Andy Shevchenko