explore
static const struct explore explore[] = {
const struct explore *ex;
for (ex = explore; ex->e_af >= 0; ex++) {
for (ex = explore; ex->e_af >= 0; ex++) {
(udev->hub->explore) (udev);
hub->explore = &uhub_explore;
err = (child->hub->explore) (child);
usb_error_t (*explore) (struct usb_device *hub);