HCI_LINK_CLOSED
link->hl_state = HCI_LINK_CLOSED;
if (link->hl_state == HCI_LINK_CLOSED)
case HCI_LINK_CLOSED:
if (link->hl_state == HCI_LINK_CLOSED) {
link->hl_state = HCI_LINK_CLOSED;
case HCI_LINK_CLOSED: