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Date: Mon, 25 May 2009 10:00:20 +0100
From: David <david@unsolicited.net>
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To: Pete Zaitcev <zaitcev@redhat.com>
CC: Alan Stern <stern@rowland.harvard.edu>,
	USB list <linux-usb@vger.kernel.org>,
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	"Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: USB/DVB - Old Technotrend TT-connect S-2400 regression tracked
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Pete Zaitcev wrote:
> On Sun, 24 May 2009 22:10:50 -0400 (EDT), Alan Stern <stern@rowland.harvard.edu> wrote:
>
>   
>> Pete, you should look at this.  It appears to be a problem with the DMA
>> mapping in usbmon.  Probably the same sort of thing you were working on
>> about a week ago (trying to access device memory).
>>     
>
> Indeed it looks the same. Is this an AMD CPU?
>   
yes, a Phenom.

> I wonder if CONFIG_HAVE_DMA_API_DEBUG does it (enabled with a select
> in arch/x86/Kconfig). Strange that it started happening now.
>   
That is enabled. I'll switch it off and give it another go.

David