bus_print_child_header
retval += bus_print_child_header(bus, dev);
retval += bus_print_child_header(bus, dev);
bus_print_child_header(device_get_parent(child), child);
retval += bus_print_child_header(bus, dev);
bus_print_child_header(dev, child);
retval += bus_print_child_header(dev, child);
retval += bus_print_child_header(dev, child);
retval += bus_print_child_header(bus, child);
bus_print_child_header(bus, dev);
retval += bus_print_child_header(bus, child);
retval += bus_print_child_header(me, child);
retval += bus_print_child_header(bus, dev);
retval = bus_print_child_header(dev, child);
retval = bus_print_child_header(dev, child);
retval = bus_print_child_header(dev, child);
retval += bus_print_child_header(dev, child);
retval += bus_print_child_header(bus, child);
int bus_print_child_header(device_t dev, device_t child);