linux-kernel - Re: [alsa-devel] [PATCH 1/15] sound/soc/mxs/mxs-saif.c: add missing iounmap

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Message-ID: <4F213F90.8060007@bfs.de>
Date:	Thu, 26 Jan 2012 12:57:04 +0100
From:	walter harms <wharms@....de>
To:	Wolfram Sang <w.sang@...gutronix.de>
CC:	Julia Lawall <julia.lawall@...6.fr>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	Takashi Iwai <tiwai@...e.de>,
	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dong Aisheng-B29396 <B29396@...escale.com>,
	Liam Girdwood <lrg@...com>
Subject: Re: [alsa-devel] [PATCH 1/15] sound/soc/mxs/mxs-saif.c: add missing
 iounmap



Am 26.01.2012 12:05, schrieb Wolfram Sang:
>> @@ -666,18 +666,19 @@ static int mxs_saif_probe(struct platform_device *pdev)
>>   		goto failed_get_resource;
>>   	}
>>
>> -	if (!request_mem_region(iores->start, resource_size(iores),
>> -				"mxs-saif")) {
>> +	if (!devm_request_mem_region(&pdev->dev, iores->start,
>> +				     resource_size(iores), "mxs-saif")) {
>>   		dev_err(&pdev->dev, "request_mem_region failed\n");
>>   		ret = -EBUSY;
>>   		goto failed_get_resource;
>>   	}
>>
>> -	saif->base = ioremap(iores->start, resource_size(iores));
>> +	saif->base = devm_ioremap(&pdev->dev, iores->start,
>> +				  resource_size(iores));
> 
> devm_request_and_ioremap() to save even more code?
> 

hi all,
at first I am NOT the maintainer ...

personally i would stay with Julia's patch and add devm_request_and_ioremap() in a second round.
The devm stuff is brand new, and two steps here would allow to spot/locate problems more easy
since structural changes are less intrusive in each step.

re,
 wh




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