diff --git a/camera/device/default/ExternalCameraDeviceSession.cpp b/camera/device/default/ExternalCameraDeviceSession.cpp
index 736bc3c..c962974 100644
--- a/camera/device/default/ExternalCameraDeviceSession.cpp
+++ b/camera/device/default/ExternalCameraDeviceSession.cpp
@@ -217,10 +217,8 @@
     // Grab a shared_ptr to 'this' from ndk::SharedRefBase::ref()
     std::shared_ptr<ExternalCameraDeviceSession> thiz = ref<ExternalCameraDeviceSession>();
 
-    if (mSupportBufMgr) {
-        mBufferRequestThread = std::make_shared<BufferRequestThread>(/*parent=*/thiz, mCallback);
-        mBufferRequestThread->run();
-    }
+    mBufferRequestThread = std::make_shared<BufferRequestThread>(/*parent=*/thiz, mCallback);
+    mBufferRequestThread->run();
     mOutputThread = std::make_shared<OutputThread>(/*parent=*/thiz, mCroppingType,
                                                    mCameraCharacteristics, mBufferRequestThread);
 }
diff --git a/camera/device/default/ExternalCameraDeviceSession.h b/camera/device/default/ExternalCameraDeviceSession.h
index 5d42092..e7eb799 100644
--- a/camera/device/default/ExternalCameraDeviceSession.h
+++ b/camera/device/default/ExternalCameraDeviceSession.h
@@ -365,7 +365,6 @@
 
     static HandleImporter sHandleImporter;
 
-    bool mSupportBufMgr;
     std::shared_ptr<BufferRequestThread> mBufferRequestThread;
 
     /* Beginning of members not changed after initialize() */
diff --git a/camera/device/default/ExternalCameraOfflineSession.h b/camera/device/default/ExternalCameraOfflineSession.h
index 5795c95..1d0c057 100644
--- a/camera/device/default/ExternalCameraOfflineSession.h
+++ b/camera/device/default/ExternalCameraOfflineSession.h
@@ -39,9 +39,9 @@
 using ::aidl::android::hardware::common::fmq::MQDescriptor;
 using ::aidl::android::hardware::common::fmq::SynchronizedReadWrite;
 
-class ExternalCameraOfflineSession : public BnCameraOfflineSession,
-                                     public virtual RefBase,
-                                     public virtual OutputThreadInterface {
+class ExternalCameraOfflineSession final : public BnCameraOfflineSession,
+                                           public virtual RefBase,
+                                           public virtual OutputThreadInterface {
   public:
     ExternalCameraOfflineSession(const CroppingType& croppingType,
                                  const common::V1_0::helper::CameraMetadata& chars,