linux-kernel - Re: [PATCH] x86/mrst: add SFI platform device parsing code

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Date:	Thu, 23 Sep 2010 14:27:20 +0100
From:	Alan Cox <alan@...ux.intel.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Grant Likely <grant.likely@...retlab.ca>,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	David Woodhouse <dwmw2@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] x86/mrst: add SFI platform device parsing code

> > There should be no variations and the nature of the platform means
> > that might even work out. I don't really want to add it to the
> > table unless we have lots needing DMI data. Right now we don't and
> > there are multiple platform implementations in existence.
> 
> What is it about this platform that is going to restrict the problem?

The sort of people who will be using it and how,

> Code which makes this sort of assumption about knowing the platforms
> that the device will be deployed on well is relatively common but the
> usual result is that OEMs want to change the reference platforms and
> the assumptions that the code has been making about the systems and
> about how people will work with the code break down.

There are non reference platforms in existence without the problem you
envisage having occurred. So I think we'll worry about it if it happens
but knowing that with DMI we have the tools to deal with this.

Alan
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