Geode LX CS5536 EHCI problems

[Martin Schiller]

Am 28.10.2010 10:35, schrieb Martin Schiller:

> Am 28.10.2010 09:57, schrieb Andres Salomon:
>
>> On Thu, 28 Oct 2010 09:05:06 +0200
>> Martin Schiller <mschiller at tdt.de> wrote:
>>
>>> Am 27.10.2010 20:08, schrieb Andres Salomon:
>>>
>>>> Would you mind sending me
>>>> the output of 'lsusb -v' (run as root) prior to the error
>>>> occurring, as well as a new debug log?  Ideally with 2.6.36, but
>>>> whatever the latest kernel you have available.
>>> I am currently using 2.6.32.24, but I can also update to 2.6.36 if
>>> it's really necessary.
>>>
>>> There were 78 open/close cycles of port /dev/ttyUSB3
>>> The inline debug log in this message is just an extract. Have a look
>>> at the attached file CS5536-EHCI-debug-log.txt for the full log. I
>>> think it would also be possible to get some debug messages from the
>>> sierra usb-2-serial driver. Should I activate that?
>> Wouldn't hurt, but I think I see where it's screwing up; sierra_open attempts
>> to submit a bunch of URBs for filling it via ep5in (submitting 8 URBs as
>> defined by N_IN_URB_HM).  Those URBs never get filled in, always failing
>> with -EINPROGRESS.
>>
>> This may be a driver bug, but when you attempt to do this over and over,
>> the CS5536 ehci hardware ends up having to deal with both valid URBs and
>> these failing URBs and, after a number of these failures, seems to
>> get confused and lock up (or something).
>>
>> I'd love to see what the logs look like on another machine, where the
>> serial device actually works.
>>
> No problem. You can find a log of approximately 1200 open/close cycles with a pci usb 2.0 controller-card on the same plattform (so, exactly the same sofware) in the attached file.
>
>
>

Did you have a look at the log? Do you have any ideas what we can do now?

Regards, Martin




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