diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index b78c6d1..50fde86 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -3359,7 +3359,7 @@
     idleSleepTime = idleSleepTimeUs();
 }
 
-void AudioFlinger::MixerThread::invalidateTracks(audio_stream_type_t streamType)
+void AudioFlinger::PlaybackThread::invalidateTracks(audio_stream_type_t streamType)
 {
     ALOGV ("MixerThread::invalidateTracks() mixer %p, streamType %d, mTracks.size %d",
             this,  streamType, mTracks.size());
@@ -7026,21 +7026,11 @@
 status_t AudioFlinger::setStreamOutput(audio_stream_type_t stream, audio_io_handle_t output)
 {
     Mutex::Autolock _l(mLock);
-    MixerThread *dstThread = checkMixerThread_l(output);
-    if (dstThread == NULL) {
-        ALOGW("setStreamOutput() bad output id %d", output);
-        return BAD_VALUE;
-    }
-
     ALOGV("setStreamOutput() stream %d to output %d", stream, output);
-    audioConfigChanged_l(AudioSystem::STREAM_CONFIG_CHANGED, output, &stream);
 
     for (size_t i = 0; i < mPlaybackThreads.size(); i++) {
         PlaybackThread *thread = mPlaybackThreads.valueAt(i).get();
-        if (thread != dstThread && thread->type() != ThreadBase::DIRECT) {
-            MixerThread *srcThread = (MixerThread *)thread;
-            srcThread->invalidateTracks(stream);
-        }
+        thread->invalidateTracks(stream);
     }
 
     return NO_ERROR;
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h
index 384306c..9e42ae2 100644
--- a/services/audioflinger/AudioFlinger.h
+++ b/services/audioflinger/AudioFlinger.h
@@ -1016,6 +1016,8 @@
 
                     virtual status_t setSyncEvent(const sp<SyncEvent>& event);
                     virtual bool     isValidSyncEvent(const sp<SyncEvent>& event);
+                            void     invalidateTracks(audio_stream_type_t streamType);
+
 
     protected:
         int16_t*                        mMixBuffer;
@@ -1143,7 +1145,6 @@
 
         // Thread virtuals
 
-                    void        invalidateTracks(audio_stream_type_t streamType);
         virtual     bool        checkForNewParameters_l();
         virtual     status_t    dumpInternals(int fd, const Vector<String16>& args);