diff --git a/media/libmedia/IAudioFlinger.cpp b/media/libmedia/IAudioFlinger.cpp
index 042eac5..7543b60 100644
--- a/media/libmedia/IAudioFlinger.cpp
+++ b/media/libmedia/IAudioFlinger.cpp
@@ -1355,7 +1355,7 @@
             CHECK_INTERFACE(IAudioFlinger, data, reply);
             struct audio_patch patch;
             data.read(&patch, sizeof(struct audio_patch));
-            audio_patch_handle_t handle = {};
+            audio_patch_handle_t handle = AUDIO_PATCH_HANDLE_NONE;
             if (data.read(&handle, sizeof(audio_patch_handle_t)) != NO_ERROR) {
                 ALOGE("b/23905951");
             }
diff --git a/media/libmedia/IAudioPolicyService.cpp b/media/libmedia/IAudioPolicyService.cpp
index 16e8f11..4ea67da 100644
--- a/media/libmedia/IAudioPolicyService.cpp
+++ b/media/libmedia/IAudioPolicyService.cpp
@@ -965,7 +965,7 @@
             audio_channel_mask_t channelMask = data.readInt32();
             audio_input_flags_t flags = (audio_input_flags_t) data.readInt32();
             audio_port_handle_t selectedDeviceId = (audio_port_handle_t) data.readInt32();
-            audio_io_handle_t input = {};
+            audio_io_handle_t input = AUDIO_IO_HANDLE_NONE;
             status_t status = getInputForAttr(&attr, &input, session, uid,
                                               samplingRate, format, channelMask,
                                               flags, selectedDeviceId);
@@ -1197,7 +1197,7 @@
             CHECK_INTERFACE(IAudioPolicyService, data, reply);
             struct audio_patch patch;
             data.read(&patch, sizeof(struct audio_patch));
-            audio_patch_handle_t handle = {};
+            audio_patch_handle_t handle = AUDIO_PATCH_HANDLE_NONE;
             if (data.read(&handle, sizeof(audio_patch_handle_t)) != NO_ERROR) {
                 ALOGE("b/23912202");
             }
@@ -1275,9 +1275,9 @@
             CHECK_INTERFACE(IAudioPolicyService, data, reply);
             sp<IAudioPolicyServiceClient> client = interface_cast<IAudioPolicyServiceClient>(
                     data.readStrongBinder());
-            audio_session_t session = {};
-            audio_io_handle_t ioHandle = {};
-            audio_devices_t device = {};
+            audio_session_t session = AUDIO_SESSION_NONE;
+            audio_io_handle_t ioHandle = AUDIO_IO_HANDLE_NONE;
+            audio_devices_t device = AUDIO_DEVICE_NONE;
             status_t status = acquireSoundTriggerSession(&session, &ioHandle, &device);
             reply->writeInt32(status);
             if (status == NO_ERROR) {
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 016c25e..e5c7177 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -1540,10 +1540,10 @@
 audio_module_handle_t AudioFlinger::loadHwModule(const char *name)
 {
     if (name == NULL) {
-        return 0;
+        return AUDIO_MODULE_HANDLE_NONE;
     }
     if (!settingsAllowed()) {
-        return 0;
+        return AUDIO_MODULE_HANDLE_NONE;
     }
     Mutex::Autolock _l(mLock);
     return loadHwModule_l(name);
@@ -1564,7 +1564,7 @@
     int rc = load_audio_interface(name, &dev);
     if (rc) {
         ALOGE("loadHwModule() error %d loading module %s", rc, name);
-        return 0;
+        return AUDIO_MODULE_HANDLE_NONE;
     }
 
     mHardwareStatus = AUDIO_HW_INIT;
@@ -1572,7 +1572,7 @@
     mHardwareStatus = AUDIO_HW_IDLE;
     if (rc) {
         ALOGE("loadHwModule() init check error %d for module %s", rc, name);
-        return 0;
+        return AUDIO_MODULE_HANDLE_NONE;
     }
 
     // Check and cache this HAL's level of support for master mute and master
@@ -1619,7 +1619,7 @@
         mHardwareStatus = AUDIO_HW_IDLE;
     }
 
-    audio_module_handle_t handle = nextUniqueId(AUDIO_UNIQUE_ID_USE_MODULE);
+    audio_module_handle_t handle = (audio_module_handle_t) nextUniqueId(AUDIO_UNIQUE_ID_USE_MODULE);
     mAudioHwDevs.add(handle, new AudioHwDevice(handle, name, dev, flags));
 
     ALOGI("loadHwModule() Loaded %s audio interface from %s (%s) handle %d",
diff --git a/services/audioflinger/PatchPanel.cpp b/services/audioflinger/PatchPanel.cpp
index bf6763f..d85ac87 100644
--- a/services/audioflinger/PatchPanel.cpp
+++ b/services/audioflinger/PatchPanel.cpp
@@ -349,7 +349,7 @@
 exit:
     ALOGV("createAudioPatch() status %d", status);
     if (status == NO_ERROR) {
-        *handle = audioflinger->nextUniqueId(AUDIO_UNIQUE_ID_USE_PATCH);
+        *handle = (audio_patch_handle_t) audioflinger->nextUniqueId(AUDIO_UNIQUE_ID_USE_PATCH);
         newPatch->mHandle = *handle;
         newPatch->mHalHandle = halHandle;
         mPatches.add(newPatch);
diff --git a/services/audiopolicy/common/managerdefinitions/include/AudioSourceDescriptor.h b/services/audiopolicy/common/managerdefinitions/include/AudioSourceDescriptor.h
index 7e1e24d..4ab7cf0 100644
--- a/services/audiopolicy/common/managerdefinitions/include/AudioSourceDescriptor.h
+++ b/services/audiopolicy/common/managerdefinitions/include/AudioSourceDescriptor.h
@@ -50,7 +50,7 @@
 };
 
 class AudioSourceCollection :
-        public DefaultKeyedVector< audio_patch_handle_t, sp<AudioSourceDescriptor> >
+        public DefaultKeyedVector< audio_io_handle_t, sp<AudioSourceDescriptor> >
 {
 public:
     status_t dump(int fd) const;
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
index d4992b0..6dacaa4 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
@@ -29,7 +29,7 @@
 AudioInputDescriptor::AudioInputDescriptor(const sp<IOProfile>& profile)
     : mIoHandle(0),
       mDevice(AUDIO_DEVICE_NONE), mPolicyMix(NULL),
-      mProfile(profile), mPatchHandle(0), mId(0)
+      mProfile(profile), mPatchHandle(AUDIO_PATCH_HANDLE_NONE), mId(0)
 {
     if (profile != NULL) {
         profile->pickAudioProfile(mSamplingRate, mChannelMask, mFormat);
@@ -48,7 +48,7 @@
 audio_module_handle_t AudioInputDescriptor::getModuleHandle() const
 {
     if (mProfile == 0) {
-        return 0;
+        return AUDIO_MODULE_HANDLE_NONE;
     }
     return mProfile->getModuleHandle();
 }
@@ -157,7 +157,7 @@
     return mSessions.removeSession(session);
 }
 
-audio_port_handle_t AudioInputDescriptor::getPatchHandle() const
+audio_patch_handle_t AudioInputDescriptor::getPatchHandle() const
 {
     return mPatchHandle;
 }
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp
index c5fee50..79bbc54 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp
@@ -34,7 +34,7 @@
 AudioOutputDescriptor::AudioOutputDescriptor(const sp<AudioPort>& port,
                                              AudioPolicyClientInterface *clientInterface)
     : mPort(port), mDevice(AUDIO_DEVICE_NONE),
-      mClientInterface(clientInterface), mPatchHandle(0), mId(0)
+      mClientInterface(clientInterface), mPatchHandle(AUDIO_PATCH_HANDLE_NONE), mId(0)
 {
     // clear usage count for all stream types
     for (int i = 0; i < AUDIO_STREAM_CNT; i++) {
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioPatch.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioPatch.cpp
index 9c28e8f..b8c0550 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioPatch.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioPatch.cpp
@@ -31,7 +31,7 @@
     mHandle(static_cast<audio_patch_handle_t>(android_atomic_inc(&mNextUniqueId))),
     mPatch(*patch),
     mUid(uid),
-    mAfPatchHandle(0)
+    mAfPatchHandle(AUDIO_PATCH_HANDLE_NONE)
 {
 }
 
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp
index 19b179e..17ed537 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp
@@ -45,7 +45,7 @@
 audio_module_handle_t AudioPort::getModuleHandle() const
 {
     if (mModule == 0) {
-        return 0;
+        return AUDIO_MODULE_HANDLE_NONE;
     }
     return mModule->mHandle;
 }
diff --git a/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
index cf7c8fc..fe03429 100644
--- a/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
@@ -245,7 +245,7 @@
     // without the test?
     // This has been demonstrated to NOT be true (at start up)
     // ALOG_ASSERT(mModule != NULL);
-    dstConfig->ext.device.hw_module = mModule != 0 ? mModule->mHandle : AUDIO_IO_HANDLE_NONE;
+    dstConfig->ext.device.hw_module = mModule != 0 ? mModule->mHandle : AUDIO_MODULE_HANDLE_NONE;
     strncpy(dstConfig->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN);
 }
 
diff --git a/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp b/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
index b7c7879..2d67bd2 100644
--- a/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
@@ -27,7 +27,7 @@
 
 HwModule::HwModule(const char *name, uint32_t halVersion)
     : mName(String8(name)),
-      mHandle(0),
+      mHandle(AUDIO_MODULE_HANDLE_NONE),
       mHalVersion(halVersion)
 {
 }
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index ae8cf15..d25dabd 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -2412,7 +2412,7 @@
             return INVALID_OPERATION;
         }
     } else {
-        *handle = 0;
+        *handle = AUDIO_PATCH_HANDLE_NONE;
     }
 
     if (patch->sources[0].type == AUDIO_PORT_TYPE_MIX) {
@@ -4692,7 +4692,7 @@
     sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index);
     status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, delayMs);
     ALOGV("resetOutputDevice() releaseAudioPatch returned %d", status);
-    outputDesc->setPatchHandle(0);
+    outputDesc->setPatchHandle(AUDIO_PATCH_HANDLE_NONE);
     removeAudioPatch(patchDesc->mHandle);
     nextAudioPortGeneration();
     mpClientInterface->onAudioPatchListUpdate();
@@ -4778,7 +4778,7 @@
     sp< AudioPatch> patchDesc = mAudioPatches.valueAt(index);
     status_t status = mpClientInterface->releaseAudioPatch(patchDesc->mAfPatchHandle, 0);
     ALOGV("resetInputDevice() releaseAudioPatch returned %d", status);
-    inputDesc->setPatchHandle(0);
+    inputDesc->setPatchHandle(AUDIO_PATCH_HANDLE_NONE);
     removeAudioPatch(patchDesc->mHandle);
     nextAudioPortGeneration();
     mpClientInterface->onAudioPatchListUpdate();
diff --git a/services/audiopolicy/service/AudioPolicyClientImpl.cpp b/services/audiopolicy/service/AudioPolicyClientImpl.cpp
index 08f9cc1..dbcc070 100644
--- a/services/audiopolicy/service/AudioPolicyClientImpl.cpp
+++ b/services/audiopolicy/service/AudioPolicyClientImpl.cpp
@@ -30,7 +30,7 @@
     sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
     if (af == 0) {
         ALOGW("%s: could not get AudioFlinger", __func__);
-        return 0;
+        return AUDIO_MODULE_HANDLE_NONE;
     }
 
     return af->loadHwModule(name);
diff --git a/services/audiopolicy/service/AudioPolicyClientImplLegacy.cpp b/services/audiopolicy/service/AudioPolicyClientImplLegacy.cpp
index 580d740..09a931f 100644
--- a/services/audiopolicy/service/AudioPolicyClientImplLegacy.cpp
+++ b/services/audiopolicy/service/AudioPolicyClientImplLegacy.cpp
@@ -111,7 +111,7 @@
                                          uint32_t *pLatencyMs,
                                          audio_output_flags_t flags)
 {
-    return open_output((audio_module_handle_t)0, pDevices, pSamplingRate, pFormat, pChannelMask,
+    return open_output(AUDIO_MODULE_HANDLE_NONE, pDevices, pSamplingRate, pFormat, pChannelMask,
                           pLatencyMs, flags, NULL);
 }
 
@@ -219,7 +219,7 @@
                                         audio_channel_mask_t *pChannelMask,
                                         audio_in_acoustics_t acoustics __unused)
 {
-    return  open_input((audio_module_handle_t)0, pDevices, pSamplingRate, pFormat, pChannelMask);
+    return  open_input(AUDIO_MODULE_HANDLE_NONE, pDevices, pSamplingRate, pFormat, pChannelMask);
 }
 
 audio_io_handle_t aps_open_input_on_module(void *service __unused,