linux-kernel - Re: [PATCH v2 1/6] ASoC: dwc: Remove unnecessary debug messages and tests

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Date:	Fri, 12 Dec 2014 10:33:23 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Joe Perches <joe@...ches.com>,
	Andrew Jackson <andrew.jackson@....com>
CC:	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Rajeev Kumar <rajeevkumar.linux@...il.com>,
	Liviu Dudau <Liviu.Dudau@....com>,
	Arnd Bergmann <arnd@...db.de>,
	linux-arm-kernel@...ts.infradead.org, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/6] ASoC: dwc: Remove unnecessary debug messages and
 tests

On 12/12/2014 10:31 AM, Joe Perches wrote:
[...]
>>   	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> -	if (!res) {
>> -		dev_err(&pdev->dev, "no i2s resource defined\n");
>> -		return -ENODEV;
>> -	}
>> -
>
> Why delete this?
>
>>   	dev->i2s_base = devm_ioremap_resource(&pdev->dev, res);
>> -	if (IS_ERR(dev->i2s_base)) {
>> -		dev_err(&pdev->dev, "ioremap fail for i2s_region\n");
>> +	if (IS_ERR(dev->i2s_base))
>>   		return PTR_ERR(dev->i2s_base);
>> -	}
>
> or this?

devm_ioremap_resource both checks if res is NULL and does also its own error 
reporting. So the code in the driver is redundant.

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