[PATCH 11/16] iio: chemical: scd30: Simplify with dev_err_probe()

[Tomasz Duszynski]

On Wed, Aug 26, 2020 at 04:51:48PM +0200, Krzysztof Kozlowski wrote:
> Common pattern of handling deferred probe can be simplified with
> dev_err_probe().  Less code and also it prints the error value.
>
> Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org>
> ---
>  drivers/iio/chemical/scd30_core.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/iio/chemical/scd30_core.c b/drivers/iio/chemical/scd30_core.c
> index eac76972f83e..92358797796d 100644
> --- a/drivers/iio/chemical/scd30_core.c
> +++ b/drivers/iio/chemical/scd30_core.c
> @@ -705,13 +705,9 @@ 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");

I'd say that removing like break would slightly improve readability.
Besides, staying within 100 columns seems socially acceptable now.
Otherwise,

Acked-by: Tomasz Duszynski <tomasz.duszynski at octakon.com>

>
>  	ret = regulator_enable(state->vdd);
>  	if (ret)
> --
> 2.17.1
>