From 89012b0f8bdd3ee9618af5aa96dc82c13175af7e Mon Sep 17 00:00:00 2001
From: Daniel Gultsch <daniel@gultsch.de>
Date: Sat, 8 May 2021 11:49:24 +0200
Subject: [PATCH] synchronize startRinging() to not create multiple vibrate
 futures

---
 .../eu/siacs/conversations/services/NotificationService.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/eu/siacs/conversations/services/NotificationService.java b/src/main/java/eu/siacs/conversations/services/NotificationService.java
index 6ccd2b74f..bbde8e904 100644
--- a/src/main/java/eu/siacs/conversations/services/NotificationService.java
+++ b/src/main/java/eu/siacs/conversations/services/NotificationService.java
@@ -397,7 +397,7 @@ public class NotificationService {
         notify(DELIVERY_FAILED_NOTIFICATION_ID, summaryNotification);
     }
 
-    public void startRinging(final AbstractJingleConnection.Id id, final Set<Media> media) {
+    public synchronized void startRinging(final AbstractJingleConnection.Id id, final Set<Media> media) {
         showIncomingCallNotification(id, media);
         final NotificationManager notificationManager = (NotificationManager) mXmppConnectionService.getSystemService(Context.NOTIFICATION_SERVICE);
         final int currentInterruptionFilter;