netdev - Re: mv643xx broken on pegasos

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Message-Id: <20090118.215911.110220539.davem@davemloft.net>
Date:	Sun, 18 Jan 2009 21:59:11 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	tbm@...ius.com
Cc:	pacman@...h.dhis.org, netdev@...r.kernel.org,
	buytenh@...tstofly.org
Subject: Re: mv643xx broken on pegasos

From: Martin Michlmayr <tbm@...ius.com>
Date: Thu, 15 Jan 2009 21:32:14 +0100

> I just noticed that this bug has also been reported on the Pegasos
> forum: http://www.powerdeveloper.org/forums/viewtopic.php?p=11849
> The discussion doesn't contain a lot of information, except for this
> observation:
> 
> "I've been bisecting the problem today and the regression is indeed
> with one of Lennert's changes, but I would certainly not have bet on
> the innocent looking "mv643xx_eth: use longer DMA bursts" patch (git
> commit identifier cd4ccf76bfd2c36d351e68be7e6a597268f98a1a).
> 
> With this commit reverted, Gb ethernet is working again with kernel
> 2.6.27 on Pegasos."

Lennert, please work to resolve this problem.  If you don't
have time, I'm just going to revert that DMA burst change.

Thanks.
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