rem: TRACE("ipro1000_close()\n");
add: DEVICE_DEBUGOUT("ipro1000_close()");
context: ipro1000_close(void* cookie){	ipro1000_device *device = (ipro1000_device *)cookie;	struct ifnet *ifp = &device->adapter->interface_data.ac_if;	TRACE("ipro1000_close()\n");		device->closed = true;	release_sem(ifp->if_rcv_sem);	return B_OK;}