diff --git a/media/libaudioclient/IAudioPolicyService.cpp b/media/libaudioclient/IAudioPolicyService.cpp
index 0facaf8..24d7c92 100644
--- a/media/libaudioclient/IAudioPolicyService.cpp
+++ b/media/libaudioclient/IAudioPolicyService.cpp
@@ -108,6 +108,7 @@
     SET_PREFERRED_DEVICE_FOR_PRODUCT_STRATEGY,
     REMOVE_PREFERRED_DEVICE_FOR_PRODUCT_STRATEGY,
     GET_PREFERRED_DEVICE_FOR_PRODUCT_STRATEGY,
+    AUDIO_MODULES_UPDATED,  // oneway
 };
 
 #define MAX_ITEMS_PER_LIST 1024
@@ -1336,6 +1337,13 @@
         }
         return static_cast<status_t>(reply.readInt32());
     }
+
+    virtual void onNewAudioModulesAvailable()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IAudioPolicyService::getInterfaceDescriptor());
+        remote()->transact(AUDIO_MODULES_UPDATED, data, &reply, IBinder::FLAG_ONEWAY);
+    }
 };
 
 IMPLEMENT_META_INTERFACE(AudioPolicyService, "android.media.IAudioPolicyService");
@@ -1401,7 +1409,8 @@
         case SET_RTT_ENABLED:
         case SET_PREFERRED_DEVICE_FOR_PRODUCT_STRATEGY:
         case REMOVE_PREFERRED_DEVICE_FOR_PRODUCT_STRATEGY:
-        case GET_PREFERRED_DEVICE_FOR_PRODUCT_STRATEGY: {
+        case GET_PREFERRED_DEVICE_FOR_PRODUCT_STRATEGY:
+        case AUDIO_MODULES_UPDATED: {
             if (!isServiceUid(IPCThreadState::self()->getCallingUid())) {
                 ALOGW("%s: transaction %d received from PID %d unauthorized UID %d",
                       __func__, code, IPCThreadState::self()->getCallingPid(),
@@ -2458,6 +2467,12 @@
             return NO_ERROR;
         }
 
+        case AUDIO_MODULES_UPDATED: {
+            CHECK_INTERFACE(IAudioPolicyService, data, reply);
+            onNewAudioModulesAvailable();
+            return NO_ERROR;
+        } break;
+
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }