linux-kernel - Re: USB/DVB - Old Technotrend TT-connect S-2400 regression tracked down

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Message-Id: <20090524203902.594a0eec.zaitcev@redhat.com>
Date:	Sun, 24 May 2009 20:39:02 -0600
From:	Pete Zaitcev <zaitcev@...hat.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	USB list <linux-usb@...r.kernel.org>,
	David <david@...olicited.net>,
	Pekka Enberg <penberg@...helsinki.fi>,
	<linux-media@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	<dbrownell@...rs.sourceforge.net>, <leonidv11@...il.com>,
	Greg KH <gregkh@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: USB/DVB - Old Technotrend TT-connect S-2400 regression tracked
 down

On Sun, 24 May 2009 22:10:50 -0400 (EDT), Alan Stern <stern@...land.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?

I wonder if CONFIG_HAVE_DMA_API_DEBUG does it (enabled with a select
in arch/x86/Kconfig). Strange that it started happening now.

-- Pete
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