static void p54u_stop(struct ieee80211_hw *dev)
{
	/*
	 * TODO: figure out how to reliably stop the 3887 and net2280 so
	 * the hardware is still usable next time we want to start it.
	 * until then, we just stop listening to the hardware..
	 */
	p54u_free_urbs(dev);
}
static void p54u_stop(struct ieee80211_hw *dev)
{
	 
	p54u_free_urbs(dev);
}