diff --git a/services/audioflinger/PlaybackTracks.h b/services/audioflinger/PlaybackTracks.h
index 15e85f9..ae60ed0 100644
--- a/services/audioflinger/PlaybackTracks.h
+++ b/services/audioflinger/PlaybackTracks.h
@@ -193,8 +193,8 @@
     sp<os::ExternalVibration> getExternalVibration() const final { return mExternalVibration; }
 
             // This function should be called with holding thread lock.
-    void updateTeePatches() final;
-    void setTeePatchesToUpdate(TeePatches teePatchesToUpdate) final;
+    void updateTeePatches_l() final;
+    void setTeePatchesToUpdate_l(TeePatches teePatchesToUpdate) final;
 
     void tallyUnderrunFrames(size_t frames) final {
        if (isOut()) { // we expect this from output tracks only
@@ -349,8 +349,9 @@
 
 private:
     void                interceptBuffer(const AudioBufferProvider::Buffer& buffer);
+    // Must hold thread lock to access tee patches
     template <class F>
-    void                forEachTeePatchTrack(F f) {
+    void                forEachTeePatchTrack_l(F f) {
         for (auto& tp : mTeePatches) { f(tp.patchTrack); }
     };