[Revert][Precise][Quantal][Raring][Patch 0/1] Revert "EHCI: Update qTD next pointer in QH overlay region during unlink"

[Joseph Salisbury]

On 01/17/2013 01:49 PM, joseph.salisbury at canonical.com wrote:
> From: Joseph Salisbury <joseph.salisbury at canonical.com>
>
>
> BugLink: http://bugs.launchpad.net/bugs/1088733
>
>
> == Precise/Quantal SRU Justification ==
>
> This commit introduced a regression in Precise and all newer kernels up to and including 3.8-rc3.  A formal request was sent upstream to have mainline commit 3d037774b reverted in mainline and all supported stable kernels.
>
> == Fix ==
> Revert the following commit:
>
> commit 1cef533d4e688acbf048b5b32e6f3ca9a265ed4e
> Author: Pavankumar Kondeti <pkondeti at codeaurora.org>
> Date:   Fri Sep 7 11:23:28 2012 +0530
>
>      EHCI: Update qTD next pointer in QH overlay region during unlink
>
>
> == Impact ==
> This commit introduced a regression.
>
> == Test Case ==
> A test kernel was built with commit 1cef533d4e688acbf048b5b32e6f3ca9a265ed4e reverted.  The bug reporter stated the test kernel resolved the bug.
>
>
>
> Joseph Salisbury (1):
>    Revert "EHCI: Update qTD next pointer in QH overlay region during
>      unlink"
>
>   drivers/usb/host/ehci-q.c |   12 ++----------
>   1 file changed, 2 insertions(+), 10 deletions(-)
>


FYI, upstream has requested some usb trace data before considering a 
revert of this commit:

https://lkml.org/lkml/2013/1/17/390