linux-kernel - Re: [REVERT][v3.x.y] EHCI: Update qTD next pointer in QH overlay region during unlink

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Date:	Tue, 05 Feb 2013 10:53:38 -0500
From:	Joseph Salisbury <joseph.salisbury@...onical.com>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	Ben Hutchings <ben@...adent.org.uk>,
	LKML <linux-kernel@...r.kernel.org>, pkondeti@...eaurora.org,
	Greg KH <gregkh@...uxfoundation.org>,
	Herton Krzesinski <herton.krzesinski@...onical.com>,
	USB list <linux-usb@...r.kernel.org>
Subject: Re: [REVERT][v3.x.y] EHCI: Update qTD next pointer in QH overlay
 region during unlink

On 02/04/2013 05:04 PM, Alan Stern wrote:
> On Fri, 1 Feb 2013, Joseph Salisbury wrote:
>
>> Hi Alan,
>>
>> There is a tar file[0] attached to the bug report[1].  The tar file
>> contains a few examples of failed and successful recording attempts
>> while collecting usbmon traces.  There is a readme.txt file available
>> after extracting the files.
>>
>> The bug reporter states that only the first recording after boot fails.
>> Subsequent recordings succeed will succeed.
>>
>> Thanks again for reviewing this, Alan.  Just let me know if you would
>> like any additional data or testing.
>>
>> Thanks,
>>
>> Joe
>>
>> [0]
>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1088733/+attachment/3510887/+files/usbmon-1088733.tar.gz
>> [1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1088733
> I have replied to the original report at bugs.launchpad.net with a
> diagnostic patch.  Maybe it will help indicate what's going wrong.
>
> Alan Stern
>
Thanks so much for the assistance, Alan.  I'll work with the bug 
reporter to build a kernel with the patch and test.

Joe
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