On Mon, May 08, 2000, Pavel Machek <[EMAIL PROTECTED]> wrote:
> Hi!
>
> I get this on usb elsa 56K with JE's uhci, in 50% of cases...
>
> uhci.c: uhci_result_control() failed with status 440000
> URB [c38775a0] urbp [c11ef044]
> QH [c11ed0b0]
> td 0: [c11ee0a0]
> 011ee2a0 e0 Stalled CRC/Timeo Length=7 MaxLen=7 DT0 EndPt=0
> Dev=4, PID=2d(SETUP) (buf=011e5c10)
> td 1: [c11ee2a0]
> 011ee260 e3 SPD Active Length=0 MaxLen=7 DT1 EndPt=0 Dev=4,
> PID=69(IN) (buf=0387a6b8)
> td 2: [c11ee260]
> 011ee120 e3 SPD Active Length=0 MaxLen=7 DT0 EndPt=0 Dev=4,
> PID=69(IN) (buf=0387a6c0)
> td 3: [c11ee120]
> 011ee1e0 e3 SPD Active Length=0 MaxLen=1 DT1 EndPt=0 Dev=4,
> PID=69(IN) (buf=0387a6c8)
> td 4: [c11ee1e0]
> 00000001 e3 IOC Active Length=0 MaxLen=7ff DT1 EndPt=0 Dev=4,
> PID=e1(OUT) (buf=00000000)
>
> Other 50% it works okay. Maybe some timeout is too short for elsa?
That error is a hard error from the HC. It tried to send the packet 3
times and got no response or only garbled responses.
> It works quite okay with A-UHCI, it gets initialized twice (I can see
> it on leds), but otherwise okay.
Randy has reported a similar problem with a device he has. I worked on
it for a little bit but I haven't created a patch.
One of the possible problems that was brought up was slightly out of
spec devices which don't like multiple control packets per frame. This
would have to do with FSBR in the driver.
If this was the case, it's the device at fault, however we can
workaround the problem. We're not sure if this is the problem
definitively.
JE
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