Yuri Per wrote:
> I have problems with USB 2.0 IDE adapter connected to USB 2.0 port on 
> VIA motherboard.
> 
> I am using 2.4.20-pre7 with patches sent to this list David Brownell 
> (older version hangs after loading ehci-hcd).

Out of curiousity, which kind of support does your motherboard provide?
There's the south bridge (VT8235), or the standalone chip (VT6202).

It might matter; the VT602 hasn't always worked for me in PCI cards
(due to what seem like PCI problems).  The patches I sent recently
have gotten more VT8235 testing than VT6206 (NEC behaves fine :),
and in any case I'm glad the patches give you an improvement!


> The device works for some time, but when read command timeouts the 
> following happens:
> 
> 1) If command_abort() is called by scsi subsytem, process deadlocks on 
> wait_for_completion(&(us->notify))

For this one, it'd be good to know if 2.5.latest does the same thing.

I could believe your diagnosis (usb-storage, or scsi, EH not working),
since I've seen some strange behaviors.  But at least some of them do
seem fixed in 2.5, and it'd be good to know more about this case.
(Why was it aborting the command?)


> 2) If I disable command_abort by initializing eh_abort_handler to NULL, 
> another issue occures. When scsi subsytem attempts to reset device/bus, 
> reset fails and device is disabled. Here are log entries:

This one looks odd to me.  But again, it does look to me as if
the EHCI driver is behaving reasonably at that point.

- Dave



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