[PATCH v2 03/18] iio: adc: envelope-detector: Simplify with dev_err_probe()

[Andy Shevchenko]

On Thu, Aug 27, 2020 at 10:27 PM Krzysztof Kozlowski <krzk at kernel.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 at gmail.com>

> Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org>
>
> ---
>
> Changes since v1:
> 1. Wrap dev_err_probe() lines at 100 character
> ---
>  drivers/iio/adc/envelope-detector.c | 15 +++++----------
>  1 file changed, 5 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/iio/adc/envelope-detector.c b/drivers/iio/adc/envelope-detector.c
> index 2a4fd3bb64cf..91a7be4a3f1b 100644
> --- a/drivers/iio/adc/envelope-detector.c
> +++ b/drivers/iio/adc/envelope-detector.c
> @@ -348,11 +348,8 @@ static int envelope_detector_probe(struct platform_device *pdev)
>         indio_dev->num_channels = 1;
>
>         env->dac = devm_iio_channel_get(dev, "dac");
> -       if (IS_ERR(env->dac)) {
> -               if (PTR_ERR(env->dac) != -EPROBE_DEFER)
> -                       dev_err(dev, "failed to get dac input channel\n");
> -               return PTR_ERR(env->dac);
> -       }
> +       if (IS_ERR(env->dac))
> +               return dev_err_probe(dev, PTR_ERR(env->dac), "failed to get dac input channel\n");
>
>         env->comp_irq = platform_get_irq_byname(pdev, "comp");
>         if (env->comp_irq < 0)
> @@ -360,11 +357,9 @@ static int envelope_detector_probe(struct platform_device *pdev)
>
>         ret = devm_request_irq(dev, env->comp_irq, envelope_detector_comp_isr,
>                                0, "envelope-detector", env);
> -       if (ret) {
> -               if (ret != -EPROBE_DEFER)
> -                       dev_err(dev, "failed to request interrupt\n");
> -               return ret;
> -       }
> +       if (ret)
> +               return dev_err_probe(dev, ret, "failed to request interrupt\n");
> +
>         env->comp_irq_trigger = irq_get_trigger_type(env->comp_irq);
>         if (env->comp_irq_trigger & IRQF_TRIGGER_RISING)
>                 env->comp_irq_trigger_inv |= IRQF_TRIGGER_FALLING;
> --
> 2.17.1
>


-- 
With Best Regards,
Andy Shevchenko