linux-kernel - [regression] 2.6.23 sata_mv EH updates broke my 7042 controller

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Message-ID: <20071001220439.GA15332@lixom.net>
Date:	Mon, 1 Oct 2007 17:04:39 -0500
From:	Olof Johansson <olof@...om.net>
To:	linux-ide@...r.kernel.org, jgarzik@...ox.com
Cc:	linux-kernel@...r.kernel.org
Subject: [regression] 2.6.23 sata_mv EH updates broke my 7042 controller

Hi,

I just pulled out my Marvell 7042 SATA controller here to give it a spin
and noticed that it no longer worked (i.e. init segvs when loading from
it), etc. 2.6.22 is fine.

Bisecting (just the file drivers/ata/sata_mv.c) resulted in
bdd4dddee325a7dce3e84cf48201a06aa8508aa4 popping out as the culprit
(file version 4537deb5e90b717a725b3d74b58b4bb1d28443d0 is fine).

Just for sanity checking: Has anyone else used 7042/6042 with the current
mainline driver?

Hardware config in my case:
Highpoint 2310 controller
PPC (big endian)
WD Raptor disk

Works fine with the other controller I've been using (SIL24), and works
fine if I revert the driver.

It also works fine if I disable the IOMMU. This would point towards
either a stale dma mapping, or a missing setup of one.

Not being much at home in the SATA drivers I could keep digging but I
figured I'd bring it up first in case it rings a bell for someone.

-Olof
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