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From: Thomas Sparrevohn <Thomas.Sparrevohn@btinternet.com>
To: Jeremy Chadwick <koitsu@freebsd.org>
Date: Sat, 8 Nov 2008 11:49:11 +0000
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Cc: Alexey Shuvaev <shuvaev@physik.uni-wuerzburg.de>,
	freebsd-current@freebsd.org, freebsd-usb@freebsd.org,
	Hans Petter Selasky <hselasky@c2i.net>
Subject: Re: USB4BSD release candidate number 3 - request for review
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> > see attached fault - In short the problem has been around for a long time
> > but it seems to be related to the USB stack DMA handling - before usb2
> > it showed up as a DMA error in the ATA driver - but that was because
> > the old umass driver somehow "stole" an active DMA 
> >
> > {gigantic snip}
> 
> Check out this thread, which includes patches:
> 
> http://lists.freebsd.org/pipermail/freebsd-current/2008-November/thread.html#220
> http://lists.freebsd.org/pipermail/freebsd-current/2008-November/000220.html
> 


The patch indeed solved the problem - thanks a million