linux-kernel - libusb broken on 2.6.28 x86

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Date:	Fri, 02 Jan 2009 01:31:08 -0500
From:	Mark Lord <lkml@....ca>
To:	Greg KH <gregkh@...e.de>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org
Subject: libusb broken on 2.6.28 x86_64 ?

I'm trying to use 2.6.28 for the first time on an x86_64 box here
with devices controlled by libusb.  The devices work on the first
access, but then fail on all subsequent accesses.  Unplugging/replugging
causes them to work again for a single subsequent access.

This is with two completely different USB gadgets:
a VFD alphanumeric display, and an FTDI serial device in bitbang mode.

Did something break in 2.6.28 for libusb devices ??

Cheers
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