netdev - Re: [PATCH] ucc_geth: Rework the TX logic.

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Message-ID: <49D0FFBB.7000009@freescale.com>
Date:	Mon, 30 Mar 2009 12:22:03 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Joakim Tjernlund <Joakim.Tjernlund@...nsmode.se>
CC:	Li Yang <leoli@...escale.com>, linuxppc-dev@...abs.org,
	netdev@...r.kernel.org, pku.leo@...il.com
Subject: Re: [PATCH] ucc_geth: Rework the TX logic.

Joakim Tjernlund wrote:
> gianfar does not seem to use in_/out_ functions for the BDs. Works just
> fine that too it seems.

It does now that it has explicit barriers in a few places.  Before they 
were added, it would sometimes fail under load.  That was due to a 
compiler reordering, but CPU reordering was possible as well.

-Scott
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