linux-kernel - Re: [PATCH v2 13/18] iio: imu: inv_mpu6050: Simplify with dev_err

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Message-ID: <CAHp75VfByooMDK0bMGG-EiYg=x5NtYaweAyeJ3CXH38j_xPw9A@mail.gmail.com>
Date:   Thu, 27 Aug 2020 22:59:34 +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 13/18] iio: imu: inv_mpu6050: 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/imu/inv_mpu6050/inv_mpu_core.c | 20 ++++++--------------
>  1 file changed, 6 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
> index 3fee3947f772..18a1898e3e34 100644
> --- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
> +++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
> @@ -1475,22 +1475,14 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
>         }
>
>         st->vdd_supply = devm_regulator_get(dev, "vdd");
> -       if (IS_ERR(st->vdd_supply)) {
> -               if (PTR_ERR(st->vdd_supply) != -EPROBE_DEFER)
> -                       dev_err(dev, "Failed to get vdd regulator %d\n",
> -                               (int)PTR_ERR(st->vdd_supply));
> -
> -               return PTR_ERR(st->vdd_supply);
> -       }
> +       if (IS_ERR(st->vdd_supply))
> +               return dev_err_probe(dev, PTR_ERR(st->vdd_supply),
> +                                    "Failed to get vdd regulator\n");
>
>         st->vddio_supply = devm_regulator_get(dev, "vddio");
> -       if (IS_ERR(st->vddio_supply)) {
> -               if (PTR_ERR(st->vddio_supply) != -EPROBE_DEFER)
> -                       dev_err(dev, "Failed to get vddio regulator %d\n",
> -                               (int)PTR_ERR(st->vddio_supply));
> -
> -               return PTR_ERR(st->vddio_supply);
> -       }
> +       if (IS_ERR(st->vddio_supply))
> +               return dev_err_probe(dev, PTR_ERR(st->vddio_supply),
> +                                    "Failed to get vddio regulator\n");
>
>         result = regulator_enable(st->vdd_supply);
>         if (result) {
> --
> 2.17.1
>


-- 
With Best Regards,
Andy Shevchenko