diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 5394ab56c915..4ba23b821cbf 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3767,9 +3767,10 @@ void hci_unregister_dev(struct hci_dev *hdev)
 
 	cancel_work_sync(&hdev->power_on);
 
-	hci_dev_do_close(hdev);
-
 	unregister_pm_notifier(&hdev->suspend_notifier);
+	cancel_work_sync(&hdev->suspend_prepare);
+
+	hci_dev_do_close(hdev);
 
 	if (!test_bit(HCI_INIT, &hdev->flags) &&
 	    !hci_dev_test_flag(hdev, HCI_SETUP) &&