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Date:	Thu, 23 Oct 2008 20:30:23 +0200 (CEST)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	Michael Weiser <michael@...ser.dinsnail.net>
cc:	linux-kernel@...r.kernel.org
Subject: Re: rtc/i2c-mpc stops working with 2.6.27 on Linkstation HG (powerpc)

On Wed, 22 Oct 2008, Michael Weiser wrote:

> Hello,
> 
> with 2.6.27(-gentoo) the rtc (Ricoh 5c372) is no longer found on my
> Linkstation HG. It seems, the i2c-mpc driver doesn't even find the I2C
> controller.
> 
> Could this be related to commit
> #0d1cde235874b00905bce23f659690d060ebf475 (powerpc/i2c: Convert i2c-mpc
> into an of_platform driver,
> http://kerneltrap.org/mailarchive/git-commits-head/2008/7/16/2522594/thread)?
> 
> What do I need to do, to make it work again?
> 
> The configs are virtually identical. The kernels are loaded with their
> respective dtb files. The dtb and dts files are identical anyways.

This is a known regression, see, e.g., here:

http://ozlabs.org/pipermail/linuxppc-dev/2008-October/064318.html

waiting for someone to find time to fix it.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
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