linux-kernel - Re: [PATCH] iio: adc: stm32-adc: don't print an error on probe deferral

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Date:   Sat, 18 Jan 2020 14:22:12 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Fabrice Gasnier <fabrice.gasnier@...com>
Cc:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <mcoquelin.stm32@...il.com>,
        <alexandre.torgue@...com>, <olivier.moysan@...com>,
        <linux-iio@...r.kernel.org>, <lars@...afoo.de>, <knaack.h@....de>,
        <pmeerw@...erw.net>, <linux-stm32@...md-mailman.stormreply.com>,
        <etienne.carriere@...com>
Subject: Re: [PATCH] iio: adc: stm32-adc: don't print an error on probe
 deferral

On Mon, 13 Jan 2020 14:18:59 +0100
Fabrice Gasnier <fabrice.gasnier@...com> wrote:

> From: Etienne Carriere <etienne.carriere@...com>
> 
> Do not print an error trace when deferring probe for some resource.
> 
> Signed-off-by: Etienne Carriere <etienne.carriere@...com>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...com>
Applied.

Thanks,

Jonathan

> ---
>  drivers/iio/adc/stm32-adc-core.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c
> index 97655d7..2df88d2 100644
> --- a/drivers/iio/adc/stm32-adc-core.c
> +++ b/drivers/iio/adc/stm32-adc-core.c
> @@ -688,7 +688,8 @@ static int stm32_adc_probe(struct platform_device *pdev)
>  	priv->vref = devm_regulator_get(&pdev->dev, "vref");
>  	if (IS_ERR(priv->vref)) {
>  		ret = PTR_ERR(priv->vref);
> -		dev_err(&pdev->dev, "vref get failed, %d\n", ret);
> +		if (ret != -EPROBE_DEFER)
> +			dev_err(&pdev->dev, "vref get failed, %d\n", ret);
>  		return ret;
>  	}
>  
> @@ -696,7 +697,8 @@ static int stm32_adc_probe(struct platform_device *pdev)
>  	if (IS_ERR(priv->aclk)) {
>  		ret = PTR_ERR(priv->aclk);
>  		if (ret != -ENOENT) {
> -			dev_err(&pdev->dev, "Can't get 'adc' clock\n");
> +			if (ret != -EPROBE_DEFER)
> +				dev_err(&pdev->dev, "Can't get 'adc' clock\n");
>  			return ret;
>  		}
>  		priv->aclk = NULL;
> @@ -706,7 +708,8 @@ static int stm32_adc_probe(struct platform_device *pdev)
>  	if (IS_ERR(priv->bclk)) {
>  		ret = PTR_ERR(priv->bclk);
>  		if (ret != -ENOENT) {
> -			dev_err(&pdev->dev, "Can't get 'bus' clock\n");
> +			if (ret != -EPROBE_DEFER)
> +				dev_err(&pdev->dev, "Can't get 'bus' clock\n");
>  			return ret;
>  		}
>  		priv->bclk = NULL;