On Thu, 11 Mar 2004, Brad Campbell wrote:

> G'day all (again)
> 
> I have happened upon a Genesys USB2->ide adaptor. I also happen to have a spare disk 
> and some 
> (limited) time to assist if I can the debugging of these adaptors.
> 
> I noted a post by Alan Stern asking about the .inf file for this device so I have 
> inlined it here.
> It is listed in the driver description as a WIN98 driver however. (Apparently 
> nothing of use here)
> 
> I have 2.4.25, 2.6.4, 2000 and XP on this laptop so if there is any testing I can 
> assist with I'd be 
> happy to help.
> I don't need this adaptor for day to day use I just happened across it and it was 
> not being used so 
> I thought it might be of some use to assist debugging.
> 
> This is it connected to my internal uhci interface, but I can run it up on an 
> external ehci 
> interface and also a desktop machine that is uhci/ehci if you need.
> 
> Regards,
> Brad

At this point more testing and debugging probably won't help very much.  
As far as we can tell, some Genesys interfaces operating at high speed
just stop sending/receiving data in the middle of a transfer for no
apparent reason.  It's just barely possible that the fault lies in the
EHCI driver and not the devices -- however, if that's so then why is it
only Genesys devices fail in this way?

I thought perhaps something in the .inf file might give a clue, but it
doesn't look very helpful.  (The Windows 2000 driver's .inf file looks
even less helpful.)  Maybe the geneuide.sys and genestor.pdr files are
important -- but you'd have to reverse-engineer them to understand what
they do.  That's something I have neither the time nor the expertise to
perform.  If you could do it, though, that'd be great!

Alan Stern




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