linux-kernel - Re: [PATCH v2 16/18] iio: magnetometer: ak8974: Simplify with dev_err

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Date:   Thu, 27 Aug 2020 23:01:10 +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 16/18] iio: magnetometer: ak8974: 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>
>
> ---
>
> Changes since v1:
> 1. Wrap dev_err_probe() lines at 100 character
> ---
>  drivers/iio/magnetometer/ak8974.c | 11 ++---------
>  1 file changed, 2 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/iio/magnetometer/ak8974.c b/drivers/iio/magnetometer/ak8974.c
> index cbb44e401c0a..548c686e29d6 100644
> --- a/drivers/iio/magnetometer/ak8974.c
> +++ b/drivers/iio/magnetometer/ak8974.c
> @@ -843,15 +843,8 @@ static int ak8974_probe(struct i2c_client *i2c,
>         ret = devm_regulator_bulk_get(&i2c->dev,
>                                       ARRAY_SIZE(ak8974->regs),
>                                       ak8974->regs);
> -       if (ret < 0) {
> -               if (ret != -EPROBE_DEFER)
> -                       dev_err(&i2c->dev, "cannot get regulators: %d\n", ret);
> -               else
> -                       dev_dbg(&i2c->dev,
> -                               "regulators unavailable, deferring probe\n");
> -
> -               return ret;
> -       }
> +       if (ret < 0)
> +               return dev_err_probe(&i2c->dev, ret, "cannot get regulators\n");
>
>         ret = regulator_bulk_enable(ARRAY_SIZE(ak8974->regs), ak8974->regs);
>         if (ret < 0) {
> --
> 2.17.1
>


-- 
With Best Regards,
Andy Shevchenko