diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index f4a3a94..7489bf9 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -2132,6 +2132,10 @@
         }
     }
 
+    if (client->hasPreferredDevice()) {
+        // playback activity with preferred device impacts routing occurred, inform upper layers
+        mpClientInterface->onRoutingUpdated();
+    }
     if (delayMs != 0) {
         usleep(delayMs * 1000);
     }
@@ -2392,6 +2396,11 @@
     }
     sp<TrackClientDescriptor> client = outputDesc->getClient(portId);
 
+    if (client->hasPreferredDevice(true)) {
+        // playback activity with preferred device impacts routing occurred, inform upper layers
+        mpClientInterface->onRoutingUpdated();
+    }
+
     ALOGV("stopOutput() output %d, stream %d, session %d",
           outputDesc->mIoHandle, client->stream(), client->session());