static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len)
 {
        struct mgmt_mode *cp = data;
+       bool changed;
+       int err;
 
        BT_DBG("request for %s", hdev->name);
 
                return cmd_status(sk, hdev->id, MGMT_OP_SET_HS,
                                  MGMT_STATUS_INVALID_PARAMS);
 
+       hci_dev_lock(hdev);
+
        if (cp->val)
-               set_bit(HCI_HS_ENABLED, &hdev->dev_flags);
+               changed = !test_and_set_bit(HCI_HS_ENABLED, &hdev->dev_flags);
        else
-               clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);
+               changed = test_and_clear_bit(HCI_HS_ENABLED, &hdev->dev_flags);
+
+       err = send_settings_rsp(sk, MGMT_OP_SET_HS, hdev);
+       if (err < 0)
+               goto unlock;
 
-       return send_settings_rsp(sk, MGMT_OP_SET_HS, hdev);
+       if (changed)
+               err = new_settings(hdev, sk);
+
+unlock:
+       hci_dev_unlock(hdev);
+       return err;
 }
 
 static void le_enable_complete(struct hci_dev *hdev, u8 status)