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From: Sandy Rutherford <sandy@krvarr.bc.ca>
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Date: Thu, 13 Jan 2005 18:32:18 -0800
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cc: julian@elischer.org
Subject: Re: ulpt hangs on offline status
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Julian Elischer wrote:

   Sandy Rutherford wrote:

   >This is with FreeBSD 4.10 / i386.
   >
   >1. Has anybody else seen this behaviour?
   >
   >2. Is it a driver bug or a problem with the Entrega adapter?  The
   >   specs of my adapter and USB controller are below.
   >
   >3. Does anybody know of a patch to ultp.c to fix this problem?
   >
   >4. Any ideas for a (software) workaround, such as a way to force a soft
   >   detach/attach? 
   >

   You might close and reopen the device.

Can that be done from userland?

>I am willing to muck around with the driver to try to fix this myself,
>but it would be useful to know if anybody else has seen or worked on
>this problem.
>

   not yet but I'm willing to believe that you may need to poll the device 
   to see the change in status.
   That would be handled in the "interrupt" type transfers..
   We do not support them very well yet.

That was my guess as well.

Thanks,
Sandy