diff --git a/libs/gui/BLASTBufferQueue.cpp b/libs/gui/BLASTBufferQueue.cpp
index 8f6dd84..f8e3fd0 100644
--- a/libs/gui/BLASTBufferQueue.cpp
+++ b/libs/gui/BLASTBufferQueue.cpp
@@ -22,14 +22,11 @@
 
 #include <com_android_graphics_libgui_flags.h>
 #include <cutils/atomic.h>
-#include <ftl/fake_guard.h>
 #include <gui/BLASTBufferQueue.h>
 #include <gui/BufferItemConsumer.h>
 #include <gui/BufferQueueConsumer.h>
 #include <gui/BufferQueueCore.h>
 #include <gui/BufferQueueProducer.h>
-#include <sys/epoll.h>
-#include <sys/eventfd.h>
 
 #include <gui/FrameRateUtils.h>
 #include <gui/GLConsumer.h>
@@ -77,12 +74,6 @@
     std::unique_lock _lock{mutex};        \
     base::ScopedLockAssertion assumeLocked(mutex);
 
-#if COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(BUFFER_RELEASE_CHANNEL)
-static ReleaseBufferCallback EMPTY_RELEASE_CALLBACK =
-        [](const ReleaseCallbackId&, const sp<Fence>& /*releaseFence*/,
-           std::optional<uint32_t> /*currentMaxAcquiredBufferCount*/) {};
-#endif
-
 void BLASTBufferItemConsumer::onDisconnect() {
     Mutex::Autolock lock(mMutex);
     mPreviouslyConnected = mCurrentlyConnected;
@@ -224,12 +215,6 @@
             },
             this);
 
-#if COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(BUFFER_RELEASE_CHANNEL)
-    std::unique_ptr<gui::BufferReleaseChannel::ConsumerEndpoint> bufferReleaseConsumer;
-    gui::BufferReleaseChannel::open(mName, bufferReleaseConsumer, mBufferReleaseProducer);
-    mBufferReleaseReader = std::make_shared<BufferReleaseReader>(std::move(bufferReleaseConsumer));
-#endif
-
     BQA_LOGV("BLASTBufferQueue created");
 }
 
@@ -259,9 +244,6 @@
 void BLASTBufferQueue::onFirstRef() {
     // safe default, most producers are expected to override this
     mProducer->setMaxDequeuedBufferCount(2);
-#if COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(BUFFER_RELEASE_CHANNEL)
-    mBufferReleaseThread.start(sp<BLASTBufferQueue>::fromExisting(this));
-#endif
 }
 
 void BLASTBufferQueue::update(const sp<SurfaceControl>& surface, uint32_t width, uint32_t height,
@@ -287,9 +269,6 @@
     if (surfaceControlChanged) {
         t.setFlags(mSurfaceControl, layer_state_t::eEnableBackpressure,
                    layer_state_t::eEnableBackpressure);
-#if COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(BUFFER_RELEASE_CHANNEL)
-        t.setBufferReleaseChannel(mSurfaceControl, mBufferReleaseProducer);
-#endif
         applyTransaction = true;
     }
     mTransformHint = mSurfaceControl->getTransformHint();
@@ -407,7 +386,6 @@
                                                     stat.latchTime,
                                                     stat.frameEventStats.dequeueReadyTime);
                 }
-#if !COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(BUFFER_RELEASE_CHANNEL)
                 auto currFrameNumber = stat.frameEventStats.frameNumber;
                 std::vector<ReleaseCallbackId> staleReleases;
                 for (const auto& [key, value]: mSubmitted) {
@@ -423,7 +401,6 @@
                                                 stat.currentMaxAcquiredBufferCount,
                                                 true /* fakeRelease */);
                 }
-#endif
             } else {
                 BQA_LOGE("Failed to find matching SurfaceControl in transactionCallback");
             }
@@ -434,15 +411,6 @@
     }
 }
 
-void BLASTBufferQueue::flushShadowQueue() {
-    BQA_LOGV("flushShadowQueue");
-    int numFramesToFlush = mNumFrameAvailable;
-    while (numFramesToFlush > 0) {
-        acquireNextBufferLocked(std::nullopt);
-        numFramesToFlush--;
-    }
-}
-
 // Unlike transactionCallbackThunk the release buffer callback does not extend the life of the
 // BBQ. This is because if the BBQ is destroyed, then the buffers will be released by the client.
 // So we pass in a weak pointer to the BBQ and if it still alive, then we release the buffer.
@@ -460,6 +428,15 @@
     };
 }
 
+void BLASTBufferQueue::flushShadowQueue() {
+    BQA_LOGV("flushShadowQueue");
+    int numFramesToFlush = mNumFrameAvailable;
+    while (numFramesToFlush > 0) {
+        acquireNextBufferLocked(std::nullopt);
+        numFramesToFlush--;
+    }
+}
+
 void BLASTBufferQueue::releaseBufferCallback(
         const ReleaseCallbackId& id, const sp<Fence>& releaseFence,
         std::optional<uint32_t> currentMaxAcquiredBufferCount) {
@@ -640,12 +617,7 @@
                            bufferItem.mGraphicBuffer->getHeight(), bufferItem.mTransform,
                            bufferItem.mScalingMode, crop);
 
-#if COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(BUFFER_RELEASE_CHANNEL)
-    ReleaseBufferCallback releaseBufferCallback =
-            applyTransaction ? EMPTY_RELEASE_CALLBACK : makeReleaseBufferCallbackThunk();
-#else
     auto releaseBufferCallback = makeReleaseBufferCallbackThunk();
-#endif
     sp<Fence> fence = bufferItem.mFence ? new Fence(bufferItem.mFence->dup()) : Fence::NO_FENCE;
 
     nsecs_t dequeueTime = -1;
@@ -1387,120 +1359,7 @@
 void BLASTBufferQueue::setTransactionHangCallback(
         std::function<void(const std::string&)> callback) {
     std::lock_guard _lock{mMutex};
-    mTransactionHangCallback = std::move(callback);
+    mTransactionHangCallback = callback;
 }
 
-#if COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(BUFFER_RELEASE_CHANNEL)
-
-BLASTBufferQueue::BufferReleaseReader::BufferReleaseReader(
-        std::unique_ptr<gui::BufferReleaseChannel::ConsumerEndpoint> endpoint)
-      : mEndpoint{std::move(endpoint)} {
-    mEpollFd = android::base::unique_fd{epoll_create1(0)};
-    LOG_ALWAYS_FATAL_IF(!mEpollFd.ok(),
-                        "Failed to create buffer release epoll file descriptor. errno=%d "
-                        "message='%s'",
-                        errno, strerror(errno));
-
-    epoll_event registerEndpointFd{};
-    registerEndpointFd.events = EPOLLIN;
-    registerEndpointFd.data.fd = mEndpoint->getFd();
-    status_t status =
-            epoll_ctl(mEpollFd.get(), EPOLL_CTL_ADD, mEndpoint->getFd(), &registerEndpointFd);
-    LOG_ALWAYS_FATAL_IF(status == -1,
-                        "Failed to register buffer release consumer file descriptor with epoll. "
-                        "errno=%d message='%s'",
-                        errno, strerror(errno));
-
-    mEventFd = android::base::unique_fd(eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK));
-    LOG_ALWAYS_FATAL_IF(!mEventFd.ok(),
-                        "Failed to create buffer release event file descriptor. errno=%d "
-                        "message='%s'",
-                        errno, strerror(errno));
-
-    epoll_event registerEventFd{};
-    registerEventFd.events = EPOLLIN;
-    registerEventFd.data.fd = mEventFd.get();
-    status = epoll_ctl(mEpollFd.get(), EPOLL_CTL_ADD, mEventFd.get(), &registerEventFd);
-    LOG_ALWAYS_FATAL_IF(status == -1,
-                        "Failed to register buffer release event file descriptor with epoll. "
-                        "errno=%d message='%s'",
-                        errno, strerror(errno));
-}
-
-BLASTBufferQueue::BufferReleaseReader& BLASTBufferQueue::BufferReleaseReader::operator=(
-        BufferReleaseReader&& other) {
-    if (this != &other) {
-        ftl::FakeGuard guard{mMutex};
-        ftl::FakeGuard otherGuard{other.mMutex};
-        mEndpoint = std::move(other.mEndpoint);
-        mEpollFd = std::move(other.mEpollFd);
-        mEventFd = std::move(other.mEventFd);
-    }
-    return *this;
-}
-
-status_t BLASTBufferQueue::BufferReleaseReader::readBlocking(ReleaseCallbackId& outId,
-                                                             sp<Fence>& outFence,
-                                                             uint32_t& outMaxAcquiredBufferCount) {
-    epoll_event event{};
-    while (true) {
-        int eventCount = epoll_wait(mEpollFd.get(), &event, 1 /* maxevents */, -1 /* timeout */);
-        if (eventCount == 1) {
-            break;
-        }
-        if (eventCount == -1 && errno != EINTR) {
-            ALOGE("epoll_wait error while waiting for buffer release. errno=%d message='%s'", errno,
-                  strerror(errno));
-        }
-    }
-
-    if (event.data.fd == mEventFd.get()) {
-        uint64_t value;
-        if (read(mEventFd.get(), &value, sizeof(uint64_t)) == -1 && errno != EWOULDBLOCK) {
-            ALOGE("error while reading from eventfd. errno=%d message='%s'", errno,
-                  strerror(errno));
-        }
-        return WOULD_BLOCK;
-    }
-
-    std::lock_guard lock{mMutex};
-    return mEndpoint->readReleaseFence(outId, outFence, outMaxAcquiredBufferCount);
-}
-
-void BLASTBufferQueue::BufferReleaseReader::interruptBlockingRead() {
-    uint64_t value = 1;
-    if (write(mEventFd.get(), &value, sizeof(uint64_t)) == -1) {
-        ALOGE("failed to notify dequeue event. errno=%d message='%s'", errno, strerror(errno));
-    }
-}
-
-void BLASTBufferQueue::BufferReleaseThread::start(const sp<BLASTBufferQueue>& bbq) {
-    mRunning = std::make_shared<std::atomic_bool>(true);
-    mReader = bbq->mBufferReleaseReader;
-    std::thread([running = mRunning, reader = mReader, weakBbq = wp<BLASTBufferQueue>(bbq)]() {
-        pthread_setname_np(pthread_self(), "BufferReleaseThread");
-        while (*running) {
-            ReleaseCallbackId id;
-            sp<Fence> fence;
-            uint32_t maxAcquiredBufferCount;
-            if (status_t status = reader->readBlocking(id, fence, maxAcquiredBufferCount);
-                status != OK) {
-                continue;
-            }
-            sp<BLASTBufferQueue> bbq = weakBbq.promote();
-            if (!bbq) {
-                return;
-            }
-            bbq->releaseBufferCallback(id, fence, maxAcquiredBufferCount);
-        }
-    }).detach();
-}
-
-BLASTBufferQueue::BufferReleaseThread::~BufferReleaseThread() {
-    *mRunning = false;
-    mReader->interruptBlockingRead();
-}
-
-#endif
-
 } // namespace android
diff --git a/libs/gui/include/gui/BLASTBufferQueue.h b/libs/gui/include/gui/BLASTBufferQueue.h
index 0a81126..729d46a 100644
--- a/libs/gui/include/gui/BLASTBufferQueue.h
+++ b/libs/gui/include/gui/BLASTBufferQueue.h
@@ -331,51 +331,6 @@
     std::function<void(const std::string&)> mTransactionHangCallback;
 
     std::unordered_set<uint64_t> mSyncedFrameNumbers GUARDED_BY(mMutex);
-
-#if COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(BUFFER_RELEASE_CHANNEL)
-    class BufferReleaseReader {
-    public:
-        BufferReleaseReader() = default;
-        BufferReleaseReader(std::unique_ptr<gui::BufferReleaseChannel::ConsumerEndpoint>);
-        BufferReleaseReader& operator=(BufferReleaseReader&&);
-
-        // Block until we can read a buffer release message.
-        //
-        // Returns:
-        // * OK if a ReleaseCallbackId and Fence were successfully read.
-        // * WOULD_BLOCK if the blocking read was interrupted by interruptBlockingRead.
-        // * UNKNOWN_ERROR if something went wrong.
-        status_t readBlocking(ReleaseCallbackId& outId, sp<Fence>& outReleaseFence,
-                              uint32_t& outMaxAcquiredBufferCount);
-
-        // Signals the reader's eventfd to wake up any threads waiting on readBlocking.
-        void interruptBlockingRead();
-
-    private:
-        std::mutex mMutex;
-        std::unique_ptr<gui::BufferReleaseChannel::ConsumerEndpoint> mEndpoint GUARDED_BY(mMutex);
-        android::base::unique_fd mEpollFd;
-        android::base::unique_fd mEventFd;
-    };
-
-    // BufferReleaseChannel is used to communicate buffer releases from SurfaceFlinger to
-    // the client. See BBQBufferQueueProducer::dequeueBuffer for details.
-    std::shared_ptr<BufferReleaseReader> mBufferReleaseReader;
-    std::shared_ptr<gui::BufferReleaseChannel::ProducerEndpoint> mBufferReleaseProducer;
-
-    class BufferReleaseThread {
-    public:
-        BufferReleaseThread() = default;
-        ~BufferReleaseThread();
-        void start(const sp<BLASTBufferQueue>&);
-
-    private:
-        std::shared_ptr<std::atomic_bool> mRunning;
-        std::shared_ptr<BufferReleaseReader> mReader;
-    };
-
-    BufferReleaseThread mBufferReleaseThread;
-#endif
 };
 
 } // namespace android