From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: [RFC 0/5] ASoC multi-component support : core
Date: Thu, 1 Jul 2010 20:35:58 +0100
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	<20100628101621.c811a1da.jhnikula@gmail.com>
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On Mon, Jun 28, 2010 at 10:16:21AM +0300, Jarkko Nikula wrote:

> If some board doesn't work then fix is most probably just
> adding .codec_id = I2C address of the codec (or -1) to snd_soc_dai_link
> structure of that machine.

This issue appears to apply to the overwhelming majority of machine
drivers.  

I suspect that it'd be more straightforward to convert to using a dev_id
with NULL as the wildcard match - this allows us to cope with deduping
over multiple I2C buses, cope with non-numeric IDs and (more to the
point here) will mean that we don't need to go through all the machine
drivers initialising the codec_id.