diff --git a/services/inputflinger/InputManager.cpp b/services/inputflinger/InputManager.cpp
index 3d99589..8af9bcb 100644
--- a/services/inputflinger/InputManager.cpp
+++ b/services/inputflinger/InputManager.cpp
@@ -31,25 +31,6 @@
 
 namespace android {
 
-static int32_t exceptionCodeFromStatusT(status_t status) {
-    switch (status) {
-        case OK:
-            return binder::Status::EX_NONE;
-        case INVALID_OPERATION:
-            return binder::Status::EX_UNSUPPORTED_OPERATION;
-        case BAD_VALUE:
-        case BAD_TYPE:
-        case NAME_NOT_FOUND:
-            return binder::Status::EX_ILLEGAL_ARGUMENT;
-        case NO_INIT:
-            return binder::Status::EX_ILLEGAL_STATE;
-        case PERMISSION_DENIED:
-            return binder::Status::EX_SECURITY;
-        default:
-            return binder::Status::EX_TRANSACTION_FAILED;
-    }
-}
-
 InputManager::InputManager(
         const sp<InputReaderPolicyInterface>& readerPolicy,
         const sp<InputDispatcherPolicyInterface>& dispatcherPolicy) {
@@ -138,7 +119,7 @@
 }
 
 // Used by tests only.
-binder::Status InputManager::createInputChannel(const std::string& name, InputChannel* outChannel) {
+binder::Status InputManager::registerInputChannel(const InputChannel& channel) {
     IPCThreadState* ipc = IPCThreadState::self();
     const int uid = ipc->getCallingUid();
     if (uid != AID_SHELL && uid != AID_ROOT) {
@@ -147,17 +128,12 @@
         return binder::Status::ok();
     }
 
-    base::Result<std::unique_ptr<InputChannel>> channel = mDispatcher->createInputChannel(name);
-    if (!channel) {
-        return binder::Status::fromExceptionCode(exceptionCodeFromStatusT(channel.error().code()),
-                                                 channel.error().message().c_str());
-    }
-    (*channel)->copyTo(*outChannel);
+    mDispatcher->registerInputChannel(channel.dup());
     return binder::Status::ok();
 }
 
-binder::Status InputManager::removeInputChannel(const sp<IBinder>& connectionToken) {
-    mDispatcher->removeInputChannel(connectionToken);
+binder::Status InputManager::unregisterInputChannel(const sp<IBinder>& connectionToken) {
+    mDispatcher->unregisterInputChannel(connectionToken);
     return binder::Status::ok();
 }
 
diff --git a/services/inputflinger/InputManager.h b/services/inputflinger/InputManager.h
index 49bea13..35d2d58 100644
--- a/services/inputflinger/InputManager.h
+++ b/services/inputflinger/InputManager.h
@@ -108,8 +108,8 @@
             const std::vector<InputWindowInfo>& handles,
             const sp<ISetInputWindowsListener>& setInputWindowsListener) override;
 
-    binder::Status createInputChannel(const std::string& name, InputChannel* outChannel) override;
-    binder::Status removeInputChannel(const sp<IBinder>& connectionToken) override;
+    binder::Status registerInputChannel(const InputChannel& channel) override;
+    binder::Status unregisterInputChannel(const sp<IBinder>& connectionToken) override;
     binder::Status setFocusedWindow(const FocusRequest&) override;
 
 private:
diff --git a/services/inputflinger/benchmarks/InputDispatcher_benchmarks.cpp b/services/inputflinger/benchmarks/InputDispatcher_benchmarks.cpp
index 46bc055..b645d69 100644
--- a/services/inputflinger/benchmarks/InputDispatcher_benchmarks.cpp
+++ b/services/inputflinger/benchmarks/InputDispatcher_benchmarks.cpp
@@ -129,14 +129,17 @@
 protected:
     explicit FakeInputReceiver(const sp<InputDispatcher>& dispatcher, const std::string name)
           : mDispatcher(dispatcher) {
-        mClientChannel = *mDispatcher->createInputChannel(name);
+        std::unique_ptr<InputChannel> serverChannel, clientChannel;
+        InputChannel::openInputChannelPair(name, serverChannel, clientChannel);
+        mServerChannel = std::move(serverChannel);
+        mClientChannel = std::move(clientChannel);
         mConsumer = std::make_unique<InputConsumer>(mClientChannel);
     }
 
     virtual ~FakeInputReceiver() {}
 
     sp<InputDispatcher> mDispatcher;
-    std::shared_ptr<InputChannel> mClientChannel;
+    std::shared_ptr<InputChannel> mServerChannel, mClientChannel;
     std::unique_ptr<InputConsumer> mConsumer;
     PreallocatedInputEventFactory mEventFactory;
 };
@@ -149,12 +152,14 @@
     FakeWindowHandle(const std::shared_ptr<InputApplicationHandle>& inputApplicationHandle,
                      const sp<InputDispatcher>& dispatcher, const std::string name)
           : FakeInputReceiver(dispatcher, name), mFrame(Rect(0, 0, WIDTH, HEIGHT)) {
+        mDispatcher->registerInputChannel(mServerChannel);
+
         inputApplicationHandle->updateInfo();
         mInfo.applicationInfo = *inputApplicationHandle->getInfo();
     }
 
     virtual bool updateInfo() override {
-        mInfo.token = mClientChannel->getConnectionToken();
+        mInfo.token = mServerChannel->getConnectionToken();
         mInfo.name = "FakeWindowHandle";
         mInfo.type = InputWindowInfo::Type::APPLICATION;
         mInfo.dispatchingTimeout = DISPATCHING_TIMEOUT;
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index 8b8105d..a10da66 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -28,8 +28,8 @@
 // Log debug messages about the dispatch cycle.
 #define DEBUG_DISPATCH_CYCLE 0
 
-// Log debug messages about channel creation
-#define DEBUG_CHANNEL_CREATION 0
+// Log debug messages about registrations.
+#define DEBUG_REGISTRATION 0
 
 // Log debug messages about input event injection.
 #define DEBUG_INJECTION 0
@@ -351,16 +351,6 @@
     }
 }
 
-static status_t openInputChannelPair(const std::string& name,
-                                     std::shared_ptr<InputChannel>& serverChannel,
-                                     std::unique_ptr<InputChannel>& clientChannel) {
-    std::unique_ptr<InputChannel> uniqueServerChannel;
-    status_t result = InputChannel::openInputChannelPair(name, uniqueServerChannel, clientChannel);
-
-    serverChannel = std::move(uniqueServerChannel);
-    return result;
-}
-
 const char* InputDispatcher::typeToString(InputDispatcher::FocusResult result) {
     switch (result) {
         case InputDispatcher::FocusResult::OK:
@@ -422,7 +412,7 @@
 
     while (!mConnectionsByFd.empty()) {
         sp<Connection> connection = mConnectionsByFd.begin()->second;
-        removeInputChannel(connection->inputChannel->getConnectionToken());
+        unregisterInputChannel(connection->inputChannel->getConnectionToken());
     }
 }
 
@@ -4413,72 +4403,67 @@
     }
 }
 
-base::Result<std::unique_ptr<InputChannel>> InputDispatcher::createInputChannel(
-        const std::string& name) {
-#if DEBUG_CHANNEL_CREATION
-    ALOGD("channel '%s' ~ createInputChannel", name.c_str());
+status_t InputDispatcher::registerInputChannel(const std::shared_ptr<InputChannel>& inputChannel) {
+#if DEBUG_REGISTRATION
+    ALOGD("channel '%s' ~ registerInputChannel", inputChannel->getName().c_str());
 #endif
 
-    std::shared_ptr<InputChannel> serverChannel;
-    std::unique_ptr<InputChannel> clientChannel;
-    status_t result = openInputChannelPair(name, serverChannel, clientChannel);
-
-    if (result) {
-        return base::Error(result) << "Failed to open input channel pair with name " << name;
-    }
-
     { // acquire lock
         std::scoped_lock _l(mLock);
-        sp<Connection> connection = new Connection(serverChannel, false /*monitor*/, mIdGenerator);
+        sp<Connection> existingConnection = getConnectionLocked(inputChannel->getConnectionToken());
+        if (existingConnection != nullptr) {
+            ALOGW("Attempted to register already registered input channel '%s'",
+                  inputChannel->getName().c_str());
+            return BAD_VALUE;
+        }
 
-        int fd = serverChannel->getFd();
+        sp<Connection> connection = new Connection(inputChannel, false /*monitor*/, mIdGenerator);
+
+        int fd = inputChannel->getFd();
         mConnectionsByFd[fd] = connection;
-        mInputChannelsByToken[serverChannel->getConnectionToken()] = serverChannel;
+        mInputChannelsByToken[inputChannel->getConnectionToken()] = inputChannel;
 
         mLooper->addFd(fd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this);
     } // release lock
 
     // Wake the looper because some connections have changed.
     mLooper->wake();
-    return clientChannel;
+    return OK;
 }
 
-base::Result<std::unique_ptr<InputChannel>> InputDispatcher::createInputMonitor(
-        int32_t displayId, bool isGestureMonitor, const std::string& name) {
-    std::shared_ptr<InputChannel> serverChannel;
-    std::unique_ptr<InputChannel> clientChannel;
-    status_t result = openInputChannelPair(name, serverChannel, clientChannel);
-    if (result) {
-        return base::Error(result) << "Failed to open input channel pair with name " << name;
-    }
-
+status_t InputDispatcher::registerInputMonitor(const std::shared_ptr<InputChannel>& inputChannel,
+                                               int32_t displayId, bool isGestureMonitor) {
     { // acquire lock
         std::scoped_lock _l(mLock);
 
         if (displayId < 0) {
-            return base::Error(BAD_VALUE) << "Attempted to create input monitor with name " << name
-                                          << " without a specified display.";
+            ALOGW("Attempted to register input monitor without a specified display.");
+            return BAD_VALUE;
         }
 
-        sp<Connection> connection = new Connection(serverChannel, true /*monitor*/, mIdGenerator);
+        if (inputChannel->getConnectionToken() == nullptr) {
+            ALOGW("Attempted to register input monitor without an identifying token.");
+            return BAD_VALUE;
+        }
 
-        const int fd = serverChannel->getFd();
+        sp<Connection> connection = new Connection(inputChannel, true /*monitor*/, mIdGenerator);
+
+        const int fd = inputChannel->getFd();
         mConnectionsByFd[fd] = connection;
-        mInputChannelsByToken[serverChannel->getConnectionToken()] = serverChannel;
+        mInputChannelsByToken[inputChannel->getConnectionToken()] = inputChannel;
 
         auto& monitorsByDisplay =
                 isGestureMonitor ? mGestureMonitorsByDisplay : mGlobalMonitorsByDisplay;
-        monitorsByDisplay[displayId].emplace_back(serverChannel);
+        monitorsByDisplay[displayId].emplace_back(inputChannel);
 
         mLooper->addFd(fd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this);
     }
-
     // Wake the looper because some connections have changed.
     mLooper->wake();
-    return clientChannel;
+    return OK;
 }
 
-status_t InputDispatcher::removeInputChannel(const sp<IBinder>& connectionToken) {
+status_t InputDispatcher::unregisterInputChannel(const sp<IBinder>& connectionToken) {
     { // acquire lock
         std::scoped_lock _l(mLock);
 
diff --git a/services/inputflinger/dispatcher/InputDispatcher.h b/services/inputflinger/dispatcher/InputDispatcher.h
index c021f65..f3b3dda 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.h
+++ b/services/inputflinger/dispatcher/InputDispatcher.h
@@ -116,12 +116,12 @@
     virtual bool transferTouchFocus(const sp<IBinder>& fromToken,
                                     const sp<IBinder>& toToken) override;
 
-    virtual base::Result<std::unique_ptr<InputChannel>> createInputChannel(
-            const std::string& name) override;
+    virtual status_t registerInputChannel(
+            const std::shared_ptr<InputChannel>& inputChannel) override;
     virtual void setFocusedWindow(const FocusRequest&) override;
-    virtual base::Result<std::unique_ptr<InputChannel>> createInputMonitor(
-            int32_t displayId, bool isGestureMonitor, const std::string& name) override;
-    virtual status_t removeInputChannel(const sp<IBinder>& connectionToken) override;
+    virtual status_t registerInputMonitor(const std::shared_ptr<InputChannel>& inputChannel,
+                                          int32_t displayId, bool isGestureMonitor) override;
+    virtual status_t unregisterInputChannel(const sp<IBinder>& connectionToken) override;
     virtual status_t pilferPointers(const sp<IBinder>& token) override;
 
     std::array<uint8_t, 32> sign(const VerifiedInputEvent& event) const;
diff --git a/services/inputflinger/dispatcher/include/InputDispatcherInterface.h b/services/inputflinger/dispatcher/include/InputDispatcherInterface.h
index 67d9a06..c3d50ea 100644
--- a/services/inputflinger/dispatcher/include/InputDispatcherInterface.h
+++ b/services/inputflinger/dispatcher/include/InputDispatcherInterface.h
@@ -18,7 +18,6 @@
 #define _UI_INPUT_INPUTDISPATCHER_INPUTDISPATCHERINTERFACE_H
 
 #include <InputListener.h>
-#include <android-base/result.h>
 #include <android/FocusRequest.h>
 #include <android/os/ISetInputWindowsListener.h>
 #include <input/InputApplication.h>
@@ -156,16 +155,13 @@
      */
     virtual void setFocusedWindow(const FocusRequest&) = 0;
 
-    /**
-     * Creates an input channel that may be used as targets for input events.
+    /* Registers input channels that may be used as targets for input events.
      *
      * This method may be called on any thread (usually by the input manager).
      */
-    virtual base::Result<std::unique_ptr<InputChannel>> createInputChannel(
-            const std::string& name) = 0;
+    virtual status_t registerInputChannel(const std::shared_ptr<InputChannel>& inputChannel) = 0;
 
-    /**
-     * Creates an input channel to be used to monitor input events.
+    /* Registers input channels to be used to monitor input events.
      *
      * Each monitor must target a specific display and will only receive input events sent to that
      * display. If the monitor is a gesture monitor, it will only receive pointer events on the
@@ -173,14 +169,14 @@
      *
      * This method may be called on any thread (usually by the input manager).
      */
-    virtual base::Result<std::unique_ptr<InputChannel>> createInputMonitor(
-            int32_t displayId, bool gestureMonitor, const std::string& name) = 0;
+    virtual status_t registerInputMonitor(const std::shared_ptr<InputChannel>& inputChannel,
+                                          int32_t displayId, bool gestureMonitor) = 0;
 
-    /* Removes input channels that will no longer receive input events.
+    /* Unregister input channels that will no longer receive input events.
      *
      * This method may be called on any thread (usually by the input manager).
      */
-    virtual status_t removeInputChannel(const sp<IBinder>& connectionToken) = 0;
+    virtual status_t unregisterInputChannel(const sp<IBinder>& connectionToken) = 0;
 
     /* Allows an input monitor steal the current pointer stream away from normal input windows.
      *
diff --git a/services/inputflinger/host/InputFlinger.h b/services/inputflinger/host/InputFlinger.h
index 47773d9..577309a 100644
--- a/services/inputflinger/host/InputFlinger.h
+++ b/services/inputflinger/host/InputFlinger.h
@@ -48,10 +48,8 @@
                                    const sp<ISetInputWindowsListener>&) {
         return binder::Status::ok();
     }
-    binder::Status createInputChannel(const std::string&, InputChannel*) {
-        return binder::Status::ok();
-    }
-    binder::Status removeInputChannel(const sp<IBinder>&) { return binder::Status::ok(); }
+    binder::Status registerInputChannel(const InputChannel&) { return binder::Status::ok(); }
+    binder::Status unregisterInputChannel(const sp<IBinder>&) { return binder::Status::ok(); }
     binder::Status setFocusedWindow(const FocusRequest&) { return binder::Status::ok(); }
 
 private:
diff --git a/services/inputflinger/tests/IInputFlingerQuery.aidl b/services/inputflinger/tests/IInputFlingerQuery.aidl
index 5c8a8da..b5c5c9e 100644
--- a/services/inputflinger/tests/IInputFlingerQuery.aidl
+++ b/services/inputflinger/tests/IInputFlingerQuery.aidl
@@ -26,5 +26,4 @@
     void getInputWindows(out InputWindowInfo[] inputHandles);
     void getInputChannels(out InputChannel[] channels);
     void getLastFocusRequest(out FocusRequest request);
-    void resetInputManager();
 }
diff --git a/services/inputflinger/tests/InputDispatcher_test.cpp b/services/inputflinger/tests/InputDispatcher_test.cpp
index 6ef0028..ad6a602 100644
--- a/services/inputflinger/tests/InputDispatcher_test.cpp
+++ b/services/inputflinger/tests/InputDispatcher_test.cpp
@@ -548,9 +548,10 @@
 
 class FakeInputReceiver {
 public:
-    explicit FakeInputReceiver(std::unique_ptr<InputChannel> clientChannel, const std::string name)
+    explicit FakeInputReceiver(const std::shared_ptr<InputChannel>& clientChannel,
+                               const std::string name)
           : mName(name) {
-        mConsumer = std::make_unique<InputConsumer>(std::move(clientChannel));
+        mConsumer = std::make_unique<InputConsumer>(clientChannel);
     }
 
     InputEvent* consume() {
@@ -700,10 +701,11 @@
                      int32_t displayId, std::optional<sp<IBinder>> token = std::nullopt)
           : mName(name) {
         if (token == std::nullopt) {
-            base::Result<std::unique_ptr<InputChannel>> channel =
-                    dispatcher->createInputChannel(name);
-            token = (*channel)->getConnectionToken();
-            mInputReceiver = std::make_unique<FakeInputReceiver>(std::move(*channel), name);
+            std::unique_ptr<InputChannel> serverChannel, clientChannel;
+            InputChannel::openInputChannelPair(name, serverChannel, clientChannel);
+            mInputReceiver = std::make_unique<FakeInputReceiver>(std::move(clientChannel), name);
+            token = serverChannel->getConnectionToken();
+            dispatcher->registerInputChannel(std::move(serverChannel));
         }
 
         inputApplicationHandle->updateInfo();
@@ -1651,9 +1653,10 @@
 public:
     FakeMonitorReceiver(const sp<InputDispatcher>& dispatcher, const std::string name,
                         int32_t displayId, bool isGestureMonitor = false) {
-        base::Result<std::unique_ptr<InputChannel>> channel =
-                dispatcher->createInputMonitor(displayId, isGestureMonitor, name);
-        mInputReceiver = std::make_unique<FakeInputReceiver>(std::move(*channel), name);
+        std::unique_ptr<InputChannel> serverChannel, clientChannel;
+        InputChannel::openInputChannelPair(name, serverChannel, clientChannel);
+        mInputReceiver = std::make_unique<FakeInputReceiver>(std::move(clientChannel), name);
+        dispatcher->registerInputMonitor(std::move(serverChannel), displayId, isGestureMonitor);
     }
 
     sp<IBinder> getToken() { return mInputReceiver->getToken(); }
diff --git a/services/inputflinger/tests/InputFlingerService_test.cpp b/services/inputflinger/tests/InputFlingerService_test.cpp
index c368e79..3aef1e4 100644
--- a/services/inputflinger/tests/InputFlingerService_test.cpp
+++ b/services/inputflinger/tests/InputFlingerService_test.cpp
@@ -135,6 +135,7 @@
 
 public:
     TestInputManager(){};
+    void checkFdFlags(const android::base::unique_fd& fd);
 
     binder::Status getInputWindows(std::vector<::android::InputWindowInfo>* inputHandles);
     binder::Status getInputChannels(std::vector<::android::InputChannel>* channels);
@@ -146,12 +147,10 @@
             const std::vector<InputWindowInfo>& handles,
             const sp<ISetInputWindowsListener>& setInputWindowsListener) override;
 
-    binder::Status createInputChannel(const std::string& name, InputChannel* outChannel) override;
-    binder::Status removeInputChannel(const sp<IBinder>& connectionToken) override;
+    binder::Status registerInputChannel(const InputChannel& channel) override;
+    binder::Status unregisterInputChannel(const sp<IBinder>& connectionToken) override;
     binder::Status setFocusedWindow(const FocusRequest&) override;
 
-    void reset();
-
 private:
     mutable Mutex mLock;
     std::unordered_map<int32_t, std::vector<sp<InputWindowHandle>>> mHandlesPerDisplay;
@@ -165,7 +164,6 @@
     binder::Status getInputWindows(std::vector<::android::InputWindowInfo>* inputHandles) override;
     binder::Status getInputChannels(std::vector<::android::InputChannel>* channels) override;
     binder::Status getLastFocusRequest(FocusRequest*) override;
-    binder::Status resetInputManager() override;
 
 private:
     sp<android::TestInputManager> mManager;
@@ -184,11 +182,6 @@
     return mManager->getLastFocusRequest(request);
 }
 
-binder::Status TestInputQuery::resetInputManager() {
-    mManager->reset();
-    return binder::Status::ok();
-}
-
 binder::Status SetInputWindowsListener::onSetInputWindowsFinished() {
     if (mCbFunc != nullptr) {
         mCbFunc();
@@ -211,21 +204,23 @@
     return binder::Status::ok();
 }
 
-binder::Status TestInputManager::createInputChannel(const std::string& name,
-                                                    InputChannel* outChannel) {
+void TestInputManager::checkFdFlags(const android::base::unique_fd& fd) {
+    const int result = fcntl(fd, F_GETFL);
+    EXPECT_NE(result, -1);
+    EXPECT_EQ(result & O_NONBLOCK, O_NONBLOCK);
+}
+
+binder::Status TestInputManager::registerInputChannel(const InputChannel& channel) {
     AutoMutex _l(mLock);
-    std::unique_ptr<InputChannel> serverChannel;
-    std::unique_ptr<InputChannel> clientChannel;
-    InputChannel::openInputChannelPair(name, serverChannel, clientChannel);
+    // check Fd flags
+    checkFdFlags(channel.getFd());
 
-    clientChannel->copyTo(*outChannel);
-
-    mInputChannels.emplace_back(std::move(serverChannel));
+    mInputChannels.push_back(channel.dup());
 
     return binder::Status::ok();
 }
 
-binder::Status TestInputManager::removeInputChannel(const sp<IBinder>& connectionToken) {
+binder::Status TestInputManager::unregisterInputChannel(const sp<IBinder>& connectionToken) {
     AutoMutex _l(mLock);
 
     auto it = std::find_if(mInputChannels.begin(), mInputChannels.end(),
@@ -276,12 +271,6 @@
     return binder::Status::ok();
 }
 
-void TestInputManager::reset() {
-    mHandlesPerDisplay.clear();
-    mInputChannels.clear();
-    mFocusRequest = FocusRequest();
-}
-
 void InputFlingerServiceTest::SetUp() {
     mSetInputWindowsListener = new SetInputWindowsListener([&]() {
         std::unique_lock<std::mutex> lock(mLock);
@@ -327,9 +316,7 @@
     InitializeInputFlinger();
 }
 
-void InputFlingerServiceTest::TearDown() {
-    mQuery->resetInputManager();
-}
+void InputFlingerServiceTest::TearDown() {}
 
 void InputFlingerServiceTest::verifyInputWindowInfo(const InputWindowInfo& info) const {
     EXPECT_EQ(mInfo, info);
@@ -380,33 +367,45 @@
 }
 
 /**
- *  Test InputFlinger service interface createInputChannel
+ *  Test InputFlinger service interface registerInputChannel
  */
-TEST_F(InputFlingerServiceTest, CreateInputChannelReturnsUnblockedFd) {
-    // Test that the unblocked file descriptor flag is kept across processes over binder
-    // transactions.
+TEST_F(InputFlingerServiceTest, InputWindow_RegisterInputChannel) {
+    std::unique_ptr<InputChannel> serverChannel, clientChannel;
 
-    InputChannel channel;
-    ASSERT_TRUE(mService->createInputChannel("testchannels", &channel).isOk());
-
-    const base::unique_fd& fd = channel.getFd();
-    ASSERT_TRUE(fd.ok());
-
-    const int result = fcntl(fd, F_GETFL);
-    EXPECT_NE(result, -1);
-    EXPECT_EQ(result & O_NONBLOCK, O_NONBLOCK);
-}
-
-TEST_F(InputFlingerServiceTest, InputWindow_CreateInputChannel) {
-    InputChannel channel;
-    ASSERT_TRUE(mService->createInputChannel("testchannels", &channel).isOk());
+    InputChannel::openInputChannelPair("testchannels", serverChannel, clientChannel);
+    mService->registerInputChannel(*serverChannel);
 
     std::vector<::android::InputChannel> channels;
     mQuery->getInputChannels(&channels);
     ASSERT_EQ(channels.size(), 1UL);
-    EXPECT_EQ(channels[0].getConnectionToken(), channel.getConnectionToken());
+    EXPECT_EQ(channels[0], *serverChannel);
 
-    mService->removeInputChannel(channel.getConnectionToken());
+    mService->unregisterInputChannel(serverChannel->getConnectionToken());
+    mQuery->getInputChannels(&channels);
+    EXPECT_EQ(channels.size(), 0UL);
+}
+
+/**
+ *  Test InputFlinger service interface registerInputChannel with invalid cases
+ */
+TEST_F(InputFlingerServiceTest, InputWindow_RegisterInputChannelInvalid) {
+    std::unique_ptr<InputChannel> serverChannel, clientChannel;
+    InputChannel::openInputChannelPair("testchannels", serverChannel, clientChannel);
+
+    std::vector<::android::InputChannel> channels;
+    mQuery->getInputChannels(&channels);
+    EXPECT_EQ(channels.size(), 0UL);
+
+    mService->registerInputChannel(InputChannel());
+    mService->unregisterInputChannel(clientChannel->getConnectionToken());
+
+    mService->registerInputChannel(*serverChannel);
+    mService->registerInputChannel(*clientChannel);
+    mQuery->getInputChannels(&channels);
+    EXPECT_EQ(channels.size(), 2UL);
+
+    mService->unregisterInputChannel(clientChannel->getConnectionToken());
+    mService->unregisterInputChannel(serverChannel->getConnectionToken());
     mQuery->getInputChannels(&channels);
     EXPECT_EQ(channels.size(), 0UL);
 }