Re: [regression] openSUSE 12.2 stable kernel 3.7.8-1 big USB 2.0slowdown

From: Jiri Slaby
Date: Tue Feb 19 2013 - 04:16:51 EST

On 02/19/2013 03:56 AM, Alan Stern wrote:
> On Mon, 18 Feb 2013, Jiri Slaby wrote:
>> On 02/18/2013 06:25 AM, Anja NÃtzel wrote:
>>> Maybe it startet with 3.7.7.
>>> I could copy several MB onto my USB 2.0 sticks with 3.7.6. (I think).
>>> Even with full speed.
>>> With openSUSE 12.2 DVD (kernel 3.4.x) it works OK, too.
>>> Now it degrates to 12 mbits (full-speed USB only).
>> This is an upstream 3.7.7 stable regression, I think. Some of these
>> patches perhaps:
>> d7da098 USB: EHCI: fix for leaking isochronous data
>> caa891a USB: storage: optimize to match the Huawei USB storage devices
>> and support new switch command
>> 08b4bfd USB: storage: Define a new macro for USB storage match rules
>> 390077b usb: Using correct way to clear usb3.0 device's remote wakeup
>> feature.
>> 93dffb7 USB: EHCI: fix bug in scheduling periodic split transfers
>> bf79379 USB: EHCI: fix timer bug affecting port resume
>> d01875f USB: EHCI: unlink one async QH at a time
>> 269ef9f USB: EHCI: remove ASS/PSS polling timeout
>> Alan, any ideas?
> A lot of people have reported problems caused by the last one
> (269ef9f). I haven't had time to investigate yet (just got back from
> vacation).

I reverted that one in:

Anja, could you test that kernel?

suse labs
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