diff --git a/media/libstagefright/rtsp/AAVCAssembler.cpp b/media/libstagefright/rtsp/AAVCAssembler.cpp
index ddf797c..2f516d5 100644
--- a/media/libstagefright/rtsp/AAVCAssembler.cpp
+++ b/media/libstagefright/rtsp/AAVCAssembler.cpp
@@ -618,14 +618,13 @@
 
 int32_t AAVCAssembler::pickStartSeq(const Queue *queue,
         uint32_t first, int64_t play, int64_t jit) {
-    CHECK(!queue->empty());
     // pick the first sequence number has the start bit.
     sp<ABuffer> buffer = *(queue->begin());
     int32_t firstSeqNo = buffer->int32Data();
 
     // This only works for FU-A type & non-start sequence
-    int32_t nalType = buffer->size() >= 1 ? buffer->data()[0] & 0x1f : -1;
-    if (nalType != 28 || (buffer->size() >= 2 && buffer->data()[1] & 0x80)) {
+    unsigned nalType = buffer->data()[0] & 0x1f;
+    if (nalType != 28 || buffer->data()[1] & 0x80) {
         return firstSeqNo;
     }
 
@@ -635,7 +634,7 @@
         if (rtpTime + jit >= play) {
             break;
         }
-        if (it->size() >= 2 && (data[1] & 0x80)) {
+        if ((data[1] & 0x80)) {
             const int32_t seqNo = it->int32Data();
             ALOGE("finding [HEAD] pkt. \t Seq# (%d ~ )[%d", firstSeqNo, seqNo);
             firstSeqNo = seqNo;
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 3caa16b..c1fadb2 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -9692,12 +9692,6 @@
     if (isOutput()) {
         ret = AudioSystem::startOutput(portId);
     } else {
-        {
-            // Add the track record before starting input so that the silent status for the
-            // client can be cached.
-            Mutex::Autolock _l(mLock);
-            setClientSilencedState_l(portId, false /*silenced*/);
-        }
         ret = AudioSystem::startInput(portId);
     }
 
@@ -9716,7 +9710,6 @@
         } else {
             mHalStream->stop();
         }
-        eraseClientSilencedState_l(portId);
         return PERMISSION_DENIED;
     }
 
@@ -9725,9 +9718,6 @@
                                         mChannelMask, mSessionId, isOutput(),
                                         client.attributionSource,
                                         IPCThreadState::self()->getCallingPid(), portId);
-    if (!isOutput()) {
-        track->setSilenced_l(isClientSilenced_l(portId));
-    }
 
     if (isOutput()) {
         // force volume update when a new track is added
@@ -9785,7 +9775,6 @@
     }
 
     mActiveTracks.remove(track);
-    eraseClientSilencedState_l(track->portId());
 
     mLock.unlock();
     if (isOutput()) {
@@ -10576,7 +10565,6 @@
             broadcast_l();
         }
     }
-    setClientSilencedIfExists_l(portId, silenced);
 }
 
 void AudioFlinger::MmapCaptureThread::toAudioPortConfig(struct audio_port_config *config)
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 386e425..da5adea 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -2130,26 +2130,6 @@
 
     virtual     bool        isStreamInitialized() { return false; }
 
-                void        setClientSilencedState_l(audio_port_handle_t portId, bool silenced) {
-                                mClientSilencedStates[portId] = silenced;
-                            }
-
-                size_t      eraseClientSilencedState_l(audio_port_handle_t portId) {
-                                return mClientSilencedStates.erase(portId);
-                            }
-
-                bool        isClientSilenced_l(audio_port_handle_t portId) const {
-                                const auto it = mClientSilencedStates.find(portId);
-                                return it != mClientSilencedStates.end() ? it->second : false;
-                            }
-
-                void        setClientSilencedIfExists_l(audio_port_handle_t portId, bool silenced) {
-                                const auto it = mClientSilencedStates.find(portId);
-                                if (it != mClientSilencedStates.end()) {
-                                    it->second = silenced;
-                                }
-                            }
-
  protected:
                 void        dumpInternals_l(int fd, const Vector<String16>& args) override;
                 void        dumpTracks_l(int fd, const Vector<String16>& args) override;
@@ -2169,7 +2149,6 @@
                 AudioHwDevice* const    mAudioHwDev;
                 ActiveTracks<MmapTrack> mActiveTracks;
                 float                   mHalVolFloat;
-                std::map<audio_port_handle_t, bool> mClientSilencedStates;
 
                 int32_t                 mNoCallbackWarningCount;
      static     constexpr int32_t       kMaxNoCallbackWarnings = 5;