diff --git a/audio/common/all-versions/test/utility/include/utility/ValidateXml.h b/audio/common/all-versions/test/utility/include/utility/ValidateXml.h
index 95080d1..91adfc1 100644
--- a/audio/common/all-versions/test/utility/include/utility/ValidateXml.h
+++ b/audio/common/all-versions/test/utility/include/utility/ValidateXml.h
@@ -45,29 +45,37 @@
                         xmlFilePath, xsdFilePath)
 
 /** Validate an XML according to an xsd.
- * The XML file must be in at least one of the provided locations.
- * If multiple are found, all are validated.
+ * All file named xmlFileName in each xmlFileLocations folder must be valid if present.
+ * @tparam atLeastOneRequired If true, at least one file has to be found.
+ *                           If false, no found file is a success.
  */
+template <bool atLeastOneRequired = true>
 ::testing::AssertionResult validateXmlMultipleLocations(
     const char* xmlFileNameExpr, const char* xmlFileLocationsExpr, const char* xsdFilePathExpr,
     const char* xmlFileName, std::vector<const char*> xmlFileLocations, const char* xsdFilePath);
 
-/** ASSERT that an XML is valid according to an xsd.
- * The XML file must be in at least one of the provided locations.
- * If multiple are found, all are validated.
- */
-#define ASSERT_ONE_VALID_XML_MULTIPLE_LOCATIONS(xmlFileName, xmlFileLocations, xsdFilePath) \
-    ASSERT_PRED_FORMAT3(                                                                    \
-        ::android::hardware::audio::common::test::utility::validateXmlMultipleLocations,    \
+/** ASSERT that all found XML are valid according to an xsd. */
+#define ASSERT_VALID_XML_MULTIPLE_LOCATIONS(xmlFileName, xmlFileLocations, xsdFilePath)         \
+    ASSERT_PRED_FORMAT3(                                                                        \
+        ::android::hardware::audio::common::test::utility::validateXmlMultipleLocations<false>, \
         xmlFileName, xmlFileLocations, xsdFilePath)
 
-/** EXPECT an XML to be valid according to an xsd.
- * The XML file must be in at least one of the provided locations.
- * If multiple are found, all are validated.
- */
-#define EXPECT_ONE_VALID_XML_MULTIPLE_LOCATIONS(xmlFileName, xmlFileLocations, xsdFilePath) \
-    EXPECT_PRED_FORMAT3(                                                                    \
-        ::android::hardware::audio::common::test::utility::validateXmlMultipleLocations,    \
+/** EXPECT that all found XML are valid according to an xsd. */
+#define EXPECT_VALID_XML_MULTIPLE_LOCATIONS(xmlFileName, xmlFileLocations, xsdFilePath)         \
+    EXPECT_PRED_FORMAT3(                                                                        \
+        ::android::hardware::audio::common::test::utility::validateXmlMultipleLocations<false>, \
+        xmlFileName, xmlFileLocations, xsdFilePath)
+
+/** ASSERT that all found XML are valid according to an xsd. At least one must be found. */
+#define ASSERT_ONE_VALID_XML_MULTIPLE_LOCATIONS(xmlFileName, xmlFileLocations, xsdFilePath)    \
+    ASSERT_PRED_FORMAT3(                                                                       \
+        ::android::hardware::audio::common::test::utility::validateXmlMultipleLocations<true>, \
+        xmlFileName, xmlFileLocations, xsdFilePath)
+
+/** EXPECT that all found XML are valid according to an xsd. At least one must be found. */
+#define EXPECT_ONE_VALID_XML_MULTIPLE_LOCATIONS(xmlFileName, xmlFileLocations, xsdFilePath)    \
+    EXPECT_PRED_FORMAT3(                                                                       \
+        ::android::hardware::audio::common::test::utility::validateXmlMultipleLocations<true>, \
         xmlFileName, xmlFileLocations, xsdFilePath)
 
 }  // namespace utility
diff --git a/audio/common/all-versions/test/utility/src/ValidateXml.cpp b/audio/common/all-versions/test/utility/src/ValidateXml.cpp
index 5030af5..1a906d6 100644
--- a/audio/common/all-versions/test/utility/src/ValidateXml.cpp
+++ b/audio/common/all-versions/test/utility/src/ValidateXml.cpp
@@ -129,6 +129,7 @@
     return ::testing::AssertionSuccess();
 }
 
+template <bool atLeastOneRequired>
 ::testing::AssertionResult validateXmlMultipleLocations(
     const char* xmlFileNameExpr, const char* xmlFileLocationsExpr, const char* xsdFilePathExpr,
     const char* xmlFileName, std::vector<const char*> xmlFileLocations, const char* xsdFilePath) {
@@ -150,7 +151,7 @@
         }
     }
 
-    if (foundFiles.empty()) {
+    if (atLeastOneRequired && foundFiles.empty()) {
         errors.push_back("No xml file found in provided locations.\n");
     }
 
@@ -160,9 +161,20 @@
            << "     While validating all: " << xmlFileNameExpr
            << "\n                 Which is: " << xmlFileName
            << "\n In the following folders: " << xmlFileLocationsExpr
-           << "\n                 Which is: " << ::testing::PrintToString(xmlFileLocations);
+           << "\n                 Which is: " << ::testing::PrintToString(xmlFileLocations)
+           << (atLeastOneRequired ? "Where at least one file must be found."
+                                  : "Where no file might exist.");
 }
 
+template ::testing::AssertionResult validateXmlMultipleLocations<true>(const char*, const char*,
+                                                                       const char*, const char*,
+                                                                       std::vector<const char*>,
+                                                                       const char*);
+template ::testing::AssertionResult validateXmlMultipleLocations<false>(const char*, const char*,
+                                                                        const char*, const char*,
+                                                                        std::vector<const char*>,
+                                                                        const char*);
+
 }  // namespace utility
 }  // namespace test
 }  // namespace common
diff --git a/audio/effect/2.0/vts/functional/ValidateAudioEffectsConfiguration.cpp b/audio/effect/2.0/vts/functional/ValidateAudioEffectsConfiguration.cpp
index d0bc690..bf080d3 100644
--- a/audio/effect/2.0/vts/functional/ValidateAudioEffectsConfiguration.cpp
+++ b/audio/effect/2.0/vts/functional/ValidateAudioEffectsConfiguration.cpp
@@ -27,6 +27,6 @@
     using namespace android::effectsConfig;
 
     std::vector<const char*> locations(std::begin(DEFAULT_LOCATIONS), std::end(DEFAULT_LOCATIONS));
-    EXPECT_ONE_VALID_XML_MULTIPLE_LOCATIONS(DEFAULT_NAME, locations,
-                                            "/data/local/tmp/audio_effects_conf_V2_0.xsd");
+    EXPECT_VALID_XML_MULTIPLE_LOCATIONS(DEFAULT_NAME, locations,
+                                        "/data/local/tmp/audio_effects_conf_V2_0.xsd");
 }
diff --git a/camera/device/3.2/default/CameraDeviceSession.cpp b/camera/device/3.2/default/CameraDeviceSession.cpp
index 69f8535..fd785df 100644
--- a/camera/device/3.2/default/CameraDeviceSession.cpp
+++ b/camera/device/3.2/default/CameraDeviceSession.cpp
@@ -53,6 +53,7 @@
         camera3_callback_ops({&sProcessCaptureResult, &sNotify}),
         mDevice(device),
         mDeviceVersion(device->common.version),
+        mFreeBufEarly(shouldFreeBufEarly()),
         mIsAELockAvailable(false),
         mDerivePostRawSensKey(false),
         mNumPartialResults(1),
@@ -129,6 +130,10 @@
     return false;
 }
 
+bool CameraDeviceSession::shouldFreeBufEarly() {
+    return property_get_bool("ro.vendor.camera.free_buf_early", 0) == 1;
+}
+
 CameraDeviceSession::~CameraDeviceSession() {
     if (!isClosed()) {
         ALOGE("CameraDeviceSession deleted before close!");
@@ -887,6 +892,24 @@
         (*streams)[i] = &mStreamMap[id];
     }
 
+    if (mFreeBufEarly) {
+        // Remove buffers of deleted streams
+        for(auto it = mStreamMap.begin(); it != mStreamMap.end(); it++) {
+            int id = it->first;
+            bool found = false;
+            for (const auto& stream : requestedConfiguration.streams) {
+                if (id == stream.id) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                // Unmap all buffers of deleted stream
+                cleanupBuffersLocked(id);
+            }
+        }
+    }
+
     return true;
 }
 
@@ -908,7 +931,9 @@
             // Unmap all buffers of deleted stream
             // in case the configuration call succeeds and HAL
             // is able to release the corresponding resources too.
-            cleanupBuffersLocked(id);
+            if (!mFreeBufEarly) {
+                cleanupBuffersLocked(id);
+            }
             it = mStreamMap.erase(it);
         } else {
             ++it;
@@ -927,6 +952,27 @@
     mResultBatcher.setBatchedStreams(mVideoStreamIds);
 }
 
+
+void CameraDeviceSession::postProcessConfigurationFailureLocked(
+        const StreamConfiguration& requestedConfiguration) {
+    if (mFreeBufEarly) {
+        // Re-build the buf cache entry for deleted streams
+        for(auto it = mStreamMap.begin(); it != mStreamMap.end(); it++) {
+            int id = it->first;
+            bool found = false;
+            for (const auto& stream : requestedConfiguration.streams) {
+                if (id == stream.id) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                mCirculatingBuffers.emplace(id, CirculatingBuffers{});
+            }
+        }
+    }
+}
+
 Return<void> CameraDeviceSession::configureStreams(
         const StreamConfiguration& requestedConfiguration,
         ICameraDeviceSession::configureStreams_cb _hidl_cb)  {
@@ -979,6 +1025,8 @@
     // the corresponding resources of the deleted streams.
     if (ret == OK) {
         postProcessConfigurationLocked(requestedConfiguration);
+    } else {
+        postProcessConfigurationFailureLocked(requestedConfiguration);
     }
 
     if (ret == -EINVAL) {
diff --git a/camera/device/3.2/default/CameraDeviceSession.h b/camera/device/3.2/default/CameraDeviceSession.h
index af90e5a..bcee259 100644
--- a/camera/device/3.2/default/CameraDeviceSession.h
+++ b/camera/device/3.2/default/CameraDeviceSession.h
@@ -120,6 +120,8 @@
             hidl_vec<camera3_stream_t*> *streams /*out*/);
     void postProcessConfigurationLocked(const StreamConfiguration& requestedConfiguration);
 
+    void postProcessConfigurationFailureLocked(const StreamConfiguration& requestedConfiguration);
+
 protected:
 
     // protecting mClosed/mDisconnected/mInitFail
@@ -142,6 +144,7 @@
 
     camera3_device_t* mDevice;
     const uint32_t mDeviceVersion;
+    const bool mFreeBufEarly;
     bool mIsAELockAvailable;
     bool mDerivePostRawSensKey;
     uint32_t mNumPartialResults;
@@ -293,6 +296,8 @@
 
     bool initialize();
 
+    static bool shouldFreeBufEarly();
+
     Status initStatus() const;
 
     // Validate and import request's input buffer and acquire fence
diff --git a/camera/device/3.3/default/CameraDeviceSession.cpp b/camera/device/3.3/default/CameraDeviceSession.cpp
index d36e9ed..60174fb 100644
--- a/camera/device/3.3/default/CameraDeviceSession.cpp
+++ b/camera/device/3.3/default/CameraDeviceSession.cpp
@@ -92,6 +92,8 @@
     // the corresponding resources of the deleted streams.
     if (ret == OK) {
         postProcessConfigurationLocked(requestedConfiguration);
+    } else {
+        postProcessConfigurationFailureLocked(requestedConfiguration);
     }
 
     if (ret == -EINVAL) {
diff --git a/camera/device/3.4/default/CameraDeviceSession.cpp b/camera/device/3.4/default/CameraDeviceSession.cpp
index 6a18161..f2e031c 100644
--- a/camera/device/3.4/default/CameraDeviceSession.cpp
+++ b/camera/device/3.4/default/CameraDeviceSession.cpp
@@ -154,6 +154,8 @@
     // the corresponding resources of the deleted streams.
     if (ret == OK) {
         postProcessConfigurationLocked_3_4(requestedConfiguration);
+    } else {
+        postProcessConfigurationFailureLocked_3_4(requestedConfiguration);
     }
 
     if (ret == -EINVAL) {
@@ -215,6 +217,23 @@
         (*streams)[i] = &mStreamMap[id];
     }
 
+    if (mFreeBufEarly) {
+        // Remove buffers of deleted streams
+        for(auto it = mStreamMap.begin(); it != mStreamMap.end(); it++) {
+            int id = it->first;
+            bool found = false;
+            for (const auto& stream : requestedConfiguration.streams) {
+                if (id == stream.v3_2.id) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                // Unmap all buffers of deleted stream
+                cleanupBuffersLocked(id);
+            }
+        }
+    }
     return true;
 }
 
@@ -236,7 +255,9 @@
             // Unmap all buffers of deleted stream
             // in case the configuration call succeeds and HAL
             // is able to release the corresponding resources too.
-            cleanupBuffersLocked(id);
+            if (!mFreeBufEarly) {
+                cleanupBuffersLocked(id);
+            }
             it = mStreamMap.erase(it);
         } else {
             ++it;
@@ -255,6 +276,26 @@
     mResultBatcher_3_4.setBatchedStreams(mVideoStreamIds);
 }
 
+void CameraDeviceSession::postProcessConfigurationFailureLocked_3_4(
+        const StreamConfiguration& requestedConfiguration) {
+    if (mFreeBufEarly) {
+        // Re-build the buf cache entry for deleted streams
+        for(auto it = mStreamMap.begin(); it != mStreamMap.end(); it++) {
+            int id = it->first;
+            bool found = false;
+            for (const auto& stream : requestedConfiguration.streams) {
+                if (id == stream.v3_2.id) {
+                    found = true;
+                    break;
+                }
+            }
+            if (!found) {
+                mCirculatingBuffers.emplace(id, CirculatingBuffers{});
+            }
+        }
+    }
+}
+
 Return<void> CameraDeviceSession::processCaptureRequest_3_4(
         const hidl_vec<V3_4::CaptureRequest>& requests,
         const hidl_vec<V3_2::BufferCache>& cachesToRemove,
diff --git a/camera/device/3.4/default/include/device_v3_4_impl/CameraDeviceSession.h b/camera/device/3.4/default/include/device_v3_4_impl/CameraDeviceSession.h
index 5d6a112..fdc8a5a 100644
--- a/camera/device/3.4/default/include/device_v3_4_impl/CameraDeviceSession.h
+++ b/camera/device/3.4/default/include/device_v3_4_impl/CameraDeviceSession.h
@@ -84,6 +84,8 @@
             camera3_stream_configuration_t *stream_list /*out*/,
             hidl_vec<camera3_stream_t*> *streams /*out*/);
     void postProcessConfigurationLocked_3_4(const StreamConfiguration& requestedConfiguration);
+    void postProcessConfigurationFailureLocked_3_4(
+            const StreamConfiguration& requestedConfiguration);
 
     Return<void> processCaptureRequest_3_4(
             const hidl_vec<V3_4::CaptureRequest>& requests,
diff --git a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
index 1a245c4..439333d 100644
--- a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
+++ b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
@@ -4046,10 +4046,10 @@
                                << static_cast<uint32_t>(inflightReq.errorCode);
                 }
             }
-
-            ret = session->close();
-            ASSERT_TRUE(ret.isOk());
         }
+
+        ret = session->close();
+        ASSERT_TRUE(ret.isOk());
     }
 }
 
diff --git a/drm/1.0/default/DrmFactory.cpp b/drm/1.0/default/DrmFactory.cpp
index 7e5d998..05951d7 100644
--- a/drm/1.0/default/DrmFactory.cpp
+++ b/drm/1.0/default/DrmFactory.cpp
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2016 The Android Open Source Project
-` *
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
diff --git a/drm/1.0/default/LegacyPluginPath.cpp b/drm/1.0/default/LegacyPluginPath.cpp
index 369059d..d0a8f90 100644
--- a/drm/1.0/default/LegacyPluginPath.cpp
+++ b/drm/1.0/default/LegacyPluginPath.cpp
@@ -16,6 +16,8 @@
 
 #include "LegacyPluginPath.h"
 
+#include <unistd.h>
+
 #include <cutils/properties.h>
 
 namespace android {
@@ -24,12 +26,16 @@
 namespace V1_0 {
 namespace implementation {
 
+// 64-bit DRM depends on OEM libraries that aren't
+// provided for all devices. If the drm hal service
+// is running as 64-bit use the 64-bit libs, otherwise
+// use the 32-bit libs.
 const char* getDrmPluginPath() {
-    if (property_get_bool("drm.64bit.enabled", false)) {
-        return "/vendor/lib64/mediadrm";
-    } else {
-        return "/vendor/lib/mediadrm";
-    }
+#if defined(__LP64__)
+    return "/vendor/lib64/mediadrm";
+#else
+    return "/vendor/lib/mediadrm";
+#endif
 }
 
 }  // namespace implementation
diff --git a/drm/1.0/default/include/PluginLoader.h b/drm/1.0/default/include/PluginLoader.h
index f387b3c..0c45fb3 100644
--- a/drm/1.0/default/include/PluginLoader.h
+++ b/drm/1.0/default/include/PluginLoader.h
@@ -85,7 +85,10 @@
                 libraries.push(library);
                 T* result = createFactoryFunc();
                 return  result;
-           }
+            } else {
+                ALOGE("Failed to lookup symbol %s in library %s: %s",
+                        entry, path, library->lastError());
+            }
         }
         return NULL;
     }
diff --git a/graphics/composer/2.1/utils/hwc2onfbadapter/HWC2OnFbAdapter.cpp b/graphics/composer/2.1/utils/hwc2onfbadapter/HWC2OnFbAdapter.cpp
index 7c9e651..0f50577 100644
--- a/graphics/composer/2.1/utils/hwc2onfbadapter/HWC2OnFbAdapter.cpp
+++ b/graphics/composer/2.1/utils/hwc2onfbadapter/HWC2OnFbAdapter.cpp
@@ -32,6 +32,8 @@
 #include <log/log.h>
 #include <sync/sync.h>
 
+using namespace HWC2;
+
 namespace android {
 
 namespace {
@@ -629,9 +631,10 @@
     }
 }
 
-void getCapabilitiesHook(hwc2_device_t* /*device*/, uint32_t* outCount,
-                         int32_t* /*outCapabilities*/) {
-    *outCount = 0;
+void getCapabilitiesHook(hwc2_device_t* device, uint32_t* outCount,
+                         int32_t* outCapabilities) {
+    auto& adapter = HWC2OnFbAdapter::cast(device);
+    adapter.getCapabilities(outCount, outCapabilities);
 }
 
 int closeHook(hw_device_t* device) {
@@ -656,6 +659,10 @@
     mFbInfo.xdpi_scaled = int(mFbDevice->xdpi * 1000.0f);
     mFbInfo.ydpi_scaled = int(mFbDevice->ydpi * 1000.0f);
 
+    // Present fences aren't supported, always indicate PresentFenceIsNotReliable
+    // for FB devices
+    mCapabilities.insert(Capability::PresentFenceIsNotReliable);
+
     mVsyncThread.start(0, mFbInfo.vsync_period_ns);
 }
 
@@ -791,6 +798,23 @@
     mVsyncThread.enableCallback(enable);
 }
 
+void HWC2OnFbAdapter::getCapabilities(uint32_t* outCount,
+                                      int32_t* outCapabilities) {
+    if (outCapabilities == nullptr) {
+        *outCount = mCapabilities.size();
+        return;
+    }
+
+    auto capabilityIter = mCapabilities.cbegin();
+    for (size_t written = 0; written < *outCount; ++written) {
+        if (capabilityIter == mCapabilities.cend()) {
+            return;
+        }
+        outCapabilities[written] = static_cast<int32_t>(*capabilityIter);
+        ++capabilityIter;
+    }
+}
+
 int64_t HWC2OnFbAdapter::VsyncThread::now() {
     struct timespec ts;
     clock_gettime(CLOCK_MONOTONIC, &ts);
diff --git a/graphics/composer/2.1/utils/hwc2onfbadapter/include/hwc2onfbadapter/HWC2OnFbAdapter.h b/graphics/composer/2.1/utils/hwc2onfbadapter/include/hwc2onfbadapter/HWC2OnFbAdapter.h
index d6272fd..f1f11ef 100644
--- a/graphics/composer/2.1/utils/hwc2onfbadapter/include/hwc2onfbadapter/HWC2OnFbAdapter.h
+++ b/graphics/composer/2.1/utils/hwc2onfbadapter/include/hwc2onfbadapter/HWC2OnFbAdapter.h
@@ -23,7 +23,11 @@
 #include <thread>
 #include <unordered_set>
 
+#define HWC2_INCLUDE_STRINGIFICATION
+#define HWC2_USE_CPP11
 #include <hardware/hwcomposer2.h>
+#undef HWC2_INCLUDE_STRINGIFICATION
+#undef HWC2_USE_CPP11
 
 struct framebuffer_device_t;
 
@@ -75,6 +79,7 @@
 
     void setVsyncCallback(HWC2_PFN_VSYNC callback, hwc2_callback_data_t data);
     void enableVsync(bool enable);
+    void getCapabilities(uint32_t* outCount, int32_t* outCapabilities);
 
 private:
     framebuffer_device_t* mFbDevice{nullptr};
@@ -90,6 +95,8 @@
 
     buffer_handle_t mBuffer{nullptr};
 
+    std::unordered_set<HWC2::Capability> mCapabilities;
+
     class VsyncThread {
     public:
         static int64_t now();
diff --git a/wifi/1.2/vts/functional/VtsHalWifiV1_2TargetTest.cpp b/wifi/1.2/vts/functional/VtsHalWifiV1_2TargetTest.cpp
index cfad208..c765cdc 100644
--- a/wifi/1.2/vts/functional/VtsHalWifiV1_2TargetTest.cpp
+++ b/wifi/1.2/vts/functional/VtsHalWifiV1_2TargetTest.cpp
@@ -17,14 +17,12 @@
 #include <android-base/logging.h>
 #include <android/hardware/wifi/1.2/IWifi.h>
 
-#include <VtsHalHidlTargetTestEnvBase.h>
-
 #include "wifi_hidl_test_utils.h"
 
 using ::android::hardware::wifi::V1_2::IWifi;
 
 // Test environment for Wifi HIDL HAL.
-class WifiHidlEnvironment_1_2 : public ::testing::VtsHalHidlTargetTestEnvBase {
+class WifiHidlEnvironment_1_2 : public WifiHidlEnvironment {
    public:
     // get the test environment singleton
     static WifiHidlEnvironment_1_2* Instance() {