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[regression] 2.6.23 sata_mv EH updates broke my 7042 controller

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From: Olof Johansson <olof@...>
To: <linux-ide@...>, <jgarzik@...>
Cc: <linux-kernel@...>
Subject: [regression] 2.6.23 sata_mv EH updates broke my 7042 controller
Date: Monday, October 1, 2007 - 6:04 pm

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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Messages in current thread:
[regression] 2.6.23 sata_mv EH updates broke my 7042 control..., Olof Johansson, (Mon Oct 1, 6:04 pm)
Re: [regression] 2.6.23 sata_mv EH updates broke my 7042 con..., Jeff Garzik, (Mon Oct 1, 6:37 pm)
Re: [regression] 2.6.23 sata_mv EH updates broke my 7042 con..., Olof Johansson, (Mon Oct 1, 10:30 pm)
Re: [regression] 2.6.23 sata_mv EH updates broke my 7042 con..., Jeff Garzik, (Tue Oct 2, 7:23 pm)
[PATCH] libata: fix for sata_mv &gt;64KB DMA segments, Olof Johansson, (Tue Oct 2, 9:45 pm)
Re: [PATCH] libata: fix for sata_mv &gt;64KB DMA segments, Jeff Garzik, (Wed Oct 3, 2:43 pm)