linux-kernel - Re: [alsa-devel] [PATCHv1 1/8] ALSA: Add SAI SoC Digital Audio Interface driver.

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Message-ID: <525FE815.1040300@tabi.org>
Date:	Thu, 17 Oct 2013 08:37:25 -0500
From:	Timur Tabi <timur@...i.org>
To:	Lars-Peter Clausen <lars@...afoo.de>
CC:	Xiubo Li <Li.Xiubo@...escale.com>, r65073@...escale.com,
	lgirdwood@...il.com, broonie@...nel.org, mark.rutland@....com,
	alsa-devel@...a-project.org, linux-doc@...r.kernel.org,
	tiwai@...e.de, b18965@...escale.com, LW@...O-electronics.de,
	linux@....linux.org.uk, b42378@...escale.com, oskar@...ra.com,
	grant.likely@...aro.org, devicetree@...r.kernel.org,
	ian.campbell@...rix.com, pawel.moll@....com, swarren@...dotorg.org,
	rob.herring@...xeda.com, linux-arm-kernel@...ts.infradead.org,
	fabio.estevam@...escale.com, linux-kernel@...r.kernel.org,
	rob@...dley.net, r64188@...escale.com, shawn.guo@...aro.org,
	linuxppc-dev@...ts.ozlabs.org
Subject: Re: [alsa-devel] [PATCHv1 1/8] ALSA: Add SAI SoC Digital Audio Interface
 driver.

Lars-Peter Clausen wrote:
>> >Maybe I've been out of the loop for too long, but why is that a particular
>> >problem with this driver?

> It is usually something you'd want to check in general to make sure that you
> don't have multiple device that access the same iomem region at the same time.

I understand that, but I'm trying to figure out why of_iomap() is okay 
for hundreds of other drivers, but not this one.  I've used it dozens of 
times myself, without ever worrying about overlapping regions.
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