Re: [PATCH] regulator: pwm-regulator: Make use of the helper function dev_err_probe()

[Neil Armstrong]

On 19/09/2021 23:11, Anand Moon wrote:
> devm_regulator_register can return -EPROBE_DEFER if the
> regulator is not ready yet. Use dev_err_probe() for
> pwm regulator resources to indicate the deferral reason
> when waiting for the resource to come up.
> 
> Fixes: 0cd71b9a43ad ("regulator: pwm: Don't warn on probe deferral")
> 
> Cc: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
> Signed-off-by: Anand Moon <linux.amoon@xxxxxxxxx>
> ---
>  drivers/regulator/pwm-regulator.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c
> index 7629476d94ae..451e57a739f8 100644
> --- a/drivers/regulator/pwm-regulator.c
> +++ b/drivers/regulator/pwm-regulator.c
> @@ -382,9 +382,9 @@ static int pwm_regulator_probe(struct platform_device *pdev)
>  					    &drvdata->desc, &config);
>  	if (IS_ERR(regulator)) {
>  		ret = PTR_ERR(regulator);
> -		dev_err(&pdev->dev, "Failed to register regulator %s: %d\n",
> -			drvdata->desc.name, ret);
> -		return ret;
> +		return dev_err_probe(&pdev->dev, ret,
> +				     "Failed to register regulator %s: %d\n",
> +				     drvdata->desc.name, ret);

No need to keep ret and print it since it will be printed by dev_err_probe, pass directly PTR_ERR(regulator) and drop the ": %d" from the error string.

Neil


>  	}
>  
>  	return 0;
>