Pavel, Johannes -- Looks like I can confirm Pavel's report that "usbnet" now talks happily to the Zaurus SL-5500 (way to go!) ... but it does make uhci-hcd get unhappy very quickly:
My testing (through an external hub) showed the following:Well, it works as good as my old does, on 2.5.43. [For some reason, it does not work any more on 2.5.43 -- host controller stopped, very bad. ...]
ohci-hcd (NEC)
- ping worked
- as did 'ping -f' (RTT ~0.8 msec)
- ssh root@zaurus worked fine
In short, no usb problems till the building power flickered and
cut power to the (Cardbus) OHCI controller, which happened to
be the only battery-free component in this test setup. (Talk
about offbeat failure modes ... the controller liked that even
less than running without external power! ;)
uhci-hcd (PIIX4)
- ping worked
- ssh root@zaurus halted it, seemingly at first TX
The uhci-hcd "dmesg" output was un-informative, as it's been
before when I've hit this failure. Just two messages:
- "host controller process error, something bad happened"
- "host controller halted. very bad"
At which point the "usbnet" driver entered a loop where its
transmits kept timing out (watchdog) and it couldn't unlink
any of its urbs (-EINVAL), flooding system logs. (Likely
due to not telling the HCD glue that the controller is dead
and can't accept any more requests, which would produce a
different failure that "usbnet" would recognize.) I was
unable to use the system till I did "ifdown usb0" (not in X).
The /proc/driver/uhci/00:07.2 file didn't seem to have any
useful information at all, but maybe there would have been
some if I'd saved something before the "ifdown".
Johannes, got any suggestions about information I should try
to collect?
- Dave
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