I since you are  listed as the maintainer of the USB subsystem and
I can't really see who else applies, I'm sending you a patch to my
driver for the DSBR-100 USB radio.  This is mainly code cosmetics
(fixed ugly missing spaces after commas I inherited from the
aztech driver, some constants moved to preprocessor symbols), but
there's one technical change: I used to stop the radio when my
file descriptor was closed.  Petr Slansky <slansky@usa.net>
pointed out that the other radio drivers don't do that, so
now I just let the radio run.