This patch is a repeat of as331 as described in

http://marc.theaimsgroup.com/?l=linux-usb-devel&m=108811725219677&w=2

It has been updated slightly to match the current source.  It should be
non-controversial; it has nothing to do with hubs or locking.  Please
apply.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>