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

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Message-ID: <50F8515C.6060703@canonical.com>
Date:	Thu, 17 Jan 2013 14:30:36 -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>,
	stable@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [REVERT][v3.x.y] EHCI: Update qTD next pointer in QH overlay
 region during unlink

On 01/17/2013 01:56 PM, Alan Stern wrote:
> On Thu, 17 Jan 2013, Joseph Salisbury wrote:
>
>> Hello,
>>
>> Please consider reverting commit
>> 3d037774b42ed677f699b1dce7d548d55f4e4c2b in mainline as well as in the
>> current stable releases.  It was included upstream as of v3.6-rc6.  This
>> commit introduced a regression, described in the following bug report:
>>
>> http://bugs.launchpad.net/bugs/1088733
>>
>> Reverting commit 3d037774b42ed677f699b1dce7d548d55f4e4c2b in the v3.2
>> kernel has been confirmed to resolve the aforementioned bug.
> I do not want to revert this commit without first understanding what is
> going wrong.  Please ask the reporter to post usbmon traces showing
> what happens in both a failed and a successful recording attempt.
>
> Alan Stern
>
Will do.  Thanks, Alan.
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