linux-kernel - Re: [PATCH] firewire: fw-ohci: blacklist dualbuffer for TSB43AB22A on ASUS boards

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Message-ID: <481B5DBF.7020604@s5r6.in-berlin.de>
Date:	Fri, 02 May 2008 20:30:23 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	linux1394-devel@...ts.sourceforge.net
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] firewire: fw-ohci: blacklist dualbuffer for TSB43AB22A
 on ASUS boards

I wrote:
> According to https://bugzilla.redhat.com/show_bug.cgi?id=435550 the
> TI TSB43AB22A on an ASUSTeK M2NPV-VM motherboard does not work in
> dual-buffer mode with dvgrab, but does so in packet-per-buffer mode.
...
> (subject to retesting by the reporter)

The reporter found that dual-buffer actually works if memory is reduced 
to 2GB.  So there is a DMA mapping/ IOMMU related problem between kernel 
and board somewhere.  Patch withdrawn.
-- 
Stefan Richter
-=====-==--- -=-= ---=-
http://arcgraph.de/sr/
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