Re: [PATCH v4 3/3] iio: adc: bcm_iproc_adc: Convert probe error handling to dev_err_probe()

[David Lechner]

On 8/1/26 4:09 AM, mdshahid03@xxxxxxxxx wrote:
> From: Mohammad Shahid <mdshahid03@xxxxxxxxx>
> 
> This simplifies the probe error handling by replacing open-coded
> dev_err() and return sequences while preserving the existing
> messages.
> 
> Signed-off-by: Mohammad Shahid <mdshahid03@xxxxxxxxx>
> ---
>  drivers/iio/adc/bcm_iproc_adc.c | 39 +++++++++++++++------------------
>  1 file changed, 18 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/iio/adc/bcm_iproc_adc.c b/drivers/iio/adc/bcm_iproc_adc.c
> index 4acd9c3f089b..5fcd528eb88a 100644
> --- a/drivers/iio/adc/bcm_iproc_adc.c
> +++ b/drivers/iio/adc/bcm_iproc_adc.c
> @@ -523,19 +523,16 @@ static int iproc_adc_probe(struct platform_device *pdev)
>  
>  	adc_priv->regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
>  			   "adc-syscon");
> -	if (IS_ERR(adc_priv->regmap)) {
> -		dev_err(dev, "failed to get handle for tsc syscon\n");
> -		ret = PTR_ERR(adc_priv->regmap);
> -		return ret;
> -	}
> +	if (IS_ERR(adc_priv->regmap))
> +		return dev_err_probe(dev,
> +				     PTR_ERR(adc_priv->regmap),

Probably fine to put this on the same line as dev since it won't
be any longer than the text below.

> +				     "failed to get handle for tsc syscon\n");
>  
>  	adc_priv->adc_clk = devm_clk_get(dev, "tsc_clk");
> -	if (IS_ERR(adc_priv->adc_clk)) {
> -		dev_err(dev,
> -			"failed getting clock tsc_clk\n");
> -		ret = PTR_ERR(adc_priv->adc_clk);
> -		return ret;
> -	}
> +	if (IS_ERR(adc_priv->adc_clk))
> +		return dev_err_probe(dev,
> +				     PTR_ERR(adc_priv->adc_clk),

same

> +				     "failed getting clock tsc_clk\n");
>  
>  	adc_priv->irqno = platform_get_irq(pdev, 0);
>  	if (adc_priv->irqno < 0)
> @@ -543,10 +540,10 @@ static int iproc_adc_probe(struct platform_device *pdev)
>  
>  	ret = regmap_clear_bits(adc_priv->regmap, IPROC_REGCTL2,
>  				IPROC_ADC_AUXIN_SCAN_ENA);
> -	if (ret) {
> -		dev_err(dev, "failed to write IPROC_REGCTL2 %d\n", ret);
> -		return ret;
> -	}
> +	if (ret)
> +		return dev_err_probe(dev,
> +				     ret,

dev and ret should be on the same line.

> +				     "failed to write IPROC_REGCTL2\n");
>  
>  	ret = devm_request_threaded_irq(dev, adc_priv->irqno,
>  				iproc_adc_interrupt_handler,
> @@ -556,11 +553,10 @@ static int iproc_adc_probe(struct platform_device *pdev)
>  		return ret;
>  
>  	ret = clk_prepare_enable(adc_priv->adc_clk);
> -	if (ret) {
> -		dev_err(dev,
> -			"clk_prepare_enable failed %d\n", ret);
> -		return ret;
> -	}
> +	if (ret)
> +		return dev_err_probe(dev,
> +				     ret,

same

> +				     "failed to enable clock\n");
>  
>  	ret = iproc_adc_enable(indio_dev);
>  	if (ret)
> @@ -574,7 +570,8 @@ static int iproc_adc_probe(struct platform_device *pdev)
>  
>  	ret = iio_device_register(indio_dev);
>  	if (ret) {
> -		dev_err(dev, "iio_device_register failed:err %d\n", ret);
> +		dev_err_probe(dev, ret,
> +			      "failed to register IIO device\n");
>  		goto err_clk;
>  	}
>