HCI_LINK_SECURITY
link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY);
changed = !hci_dev_test_and_set_flag(hdev, HCI_LINK_SECURITY);
changed = hci_dev_test_and_clear_flag(hdev, HCI_LINK_SECURITY);
if (!!cp->val != hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) {
hci_dev_change_flag(hdev, HCI_LINK_SECURITY);
hci_dev_clear_flag(hdev, HCI_LINK_SECURITY);
if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY))