From owner-freebsd-usb@FreeBSD.ORG  Thu Mar 17 17:43:05 2005
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From: Hans Petter Selasky <hselasky@c2i.net>
To: "Adam Kropelin" <akropel1@rochester.rr.com>
Date: Thu, 17 Mar 2005 18:43:50 +0100
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cc: freebsd-usb@freebsd.org
Subject: Re: ugen & uhci hang on 5.3-RELEASE and 6.0-CURRENT
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On Thursday 17 March 2005 02:34, Adam Kropelin wrote:
> Hans Petter Selasky wrote:
> > On Wednesday 16 March 2005 01:32, Adam Kropelin wrote:
>
> I gave your driver a run and it seems all of the USB_DO_REQUEST ioctls are
> now failing with EPERM. I am playing some games with transfer lengths that
> might have an affect on things. I've included the code I use for GetReport
> requests which documents the length munging.

Sorry, there seems to be a little incompatibility issue. You need to add:

#define USBD_SHORT_XFER_OK 0x0002 /* allow short reads */

to /sys/dev/usb2/usb.h

Then cd /usr/src/include && make install

Then recompile your software. Maybe I should keep USBD_SHORT_XFER_OK at the 
old value so upgrading won't be a problem ?
Hope this helps.

The ugen driver at /sys/dev/usb2/_ugen.c have a maximum length limit!

Yours
--HPS