linux-kernel - Re: [PATCH v6 19/57] iio: Remove dev_err() usage after platform_get

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Date:   Wed, 31 Jul 2019 14:42:16 +0800
From:   Phil Reid <preid@...ctromag.com.au>
To:     Stephen Boyd <swboyd@...omium.org>, linux-kernel@...r.kernel.org
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v6 19/57] iio: Remove dev_err() usage after
 platform_get_irq()

G'day Stephen,

A comment unrelated to your change.

On 31/07/2019 02:15, Stephen Boyd wrote:
....

> diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
> index 32f1c4a33b20..abe99856c823 100644
> --- a/drivers/iio/adc/at91_adc.c
> +++ b/drivers/iio/adc/at91_adc.c
> @@ -1179,10 +1179,8 @@ static int at91_adc_probe(struct platform_device *pdev)
>   	idev->info = &at91_adc_info;
>   
>   	st->irq = platform_get_irq(pdev, 0);
> -	if (st->irq < 0) {
> -		dev_err(&pdev->dev, "No IRQ ID is designated\n");
> +	if (st->irq < 0)
>   		return -ENODEV;
Should this be returning st->irq instead of -ENODEV?
eg: platform_get_irq can return -EPROBE_DEFER

Pattern is repeated in a number of other places.


> -	}
>   
>   	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>   
Regards
Phil Reid