diff --git a/audio/core/all-versions/vts/functional/Android.bp b/audio/core/all-versions/vts/functional/Android.bp
index db52e60..729ee7a 100644
--- a/audio/core/all-versions/vts/functional/Android.bp
+++ b/audio/core/all-versions/vts/functional/Android.bp
@@ -33,7 +33,7 @@
     ],
     test_suites: [
         "general-tests",
-        "vts-core",
+        "vts",
     ],
 }
 
diff --git a/automotive/vehicle/2.0/manifest.vehicle.xml b/automotive/vehicle/2.0/manifest.vehicle.xml
new file mode 100644
index 0000000..832b302
--- /dev/null
+++ b/automotive/vehicle/2.0/manifest.vehicle.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device" target-level="3">
+    <hal format="hidl">
+        <name>android.hardware.automotive.vehicle</name>
+        <transport>hwbinder</transport>
+        <version>2.0</version>
+        <interface>
+            <name>IVehicle</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/compatibility_matrices/build/vintf_compatibility_matrix.go b/compatibility_matrices/build/vintf_compatibility_matrix.go
index e48f993..2772ba3 100644
--- a/compatibility_matrices/build/vintf_compatibility_matrix.go
+++ b/compatibility_matrices/build/vintf_compatibility_matrix.go
@@ -40,7 +40,15 @@
 		Description: "assemble_vintf -i ${inputs}",
 	}, "inputs")
 
-	kernelConfigTag = dependencyTag{name: "kernel-config"}
+	xmllintXsd = pctx.AndroidStaticRule("xmllint-xsd", blueprint.RuleParams{
+		Command:     `$XmlLintCmd --schema $xsd $in > /dev/null && touch -a $out`,
+		CommandDeps: []string{"$XmlLintCmd"},
+		Restat:      true,
+	}, "xsd")
+
+	kernelConfigTag  = dependencyTag{name: "kernel-config"}
+	schemaTag        = dependencyTag{name: "matrix-schema"}
+	schemaModuleName = "compatibility_matrix_schema"
 )
 
 const (
@@ -62,11 +70,13 @@
 	android.ModuleBase
 	properties vintfCompatibilityMatrixProperties
 
-	genFile android.WritablePath
+	genFile                android.WritablePath
+	additionalDependencies android.WritablePaths
 }
 
 func init() {
 	pctx.HostBinToolVariable("assembleVintfCmd", "assemble_vintf")
+	pctx.HostBinToolVariable("XmlLintCmd", "xmllint")
 	android.RegisterModuleType("vintf_compatibility_matrix", vintfCompatibilityMatrixFactory)
 }
 
@@ -82,6 +92,42 @@
 func (g *vintfCompatibilityMatrixRule) DepsMutator(ctx android.BottomUpMutatorContext) {
 	android.ExtractSourcesDeps(ctx, g.properties.Srcs)
 	ctx.AddDependency(ctx.Module(), kernelConfigTag, g.properties.Kernel_configs...)
+	ctx.AddDependency(ctx.Module(), schemaTag, schemaModuleName)
+}
+
+func (g *vintfCompatibilityMatrixRule) timestampFilePath(ctx android.ModuleContext, path android.Path) android.WritablePath {
+	return android.GenPathWithExt(ctx, "vintf-xmllint", path, "ts")
+}
+
+func (g *vintfCompatibilityMatrixRule) generateValidateBuildAction(ctx android.ModuleContext, path android.Path, schema android.Path) {
+	timestamp := g.timestampFilePath(ctx, path)
+	ctx.Build(pctx, android.BuildParams{
+		Rule:        xmllintXsd,
+		Description: "xmllint-xsd",
+		Input:       path,
+		Output:      timestamp,
+		Implicit:    schema,
+		Args: map[string]string{
+			"xsd": schema.String(),
+		},
+	})
+	g.additionalDependencies = append(g.additionalDependencies, timestamp)
+}
+
+func (g *vintfCompatibilityMatrixRule) getSchema(ctx android.ModuleContext) android.OptionalPath {
+	schemaModule := ctx.GetDirectDepWithTag(schemaModuleName, schemaTag)
+	sfp, ok := schemaModule.(android.SourceFileProducer)
+	if !ok {
+		ctx.ModuleErrorf("Implicit dependency %q has no srcs", ctx.OtherModuleName(schemaModule))
+		return android.OptionalPath{}
+	}
+
+	schemaSrcs := sfp.Srcs()
+	if len(schemaSrcs) != 1 {
+		ctx.PropertyErrorf(`srcs of implicit dependency %q has length %d != 1`, ctx.OtherModuleName(schemaModule), len(schemaSrcs))
+		return android.OptionalPath{}
+	}
+	return android.OptionalPathForPath(schemaSrcs[0])
 }
 
 func (g *vintfCompatibilityMatrixRule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
@@ -91,7 +137,18 @@
 		outputFilename = g.Name()
 	}
 
+	schema := g.getSchema(ctx)
+	if !schema.Valid() {
+		return
+	}
+
 	inputPaths := android.PathsForModuleSrc(ctx, g.properties.Srcs)
+	for _, srcPath := range inputPaths {
+		g.generateValidateBuildAction(ctx, srcPath, schema.Path())
+	}
+
+	// No need to validate matrices from kernel configs because they are generated by
+	// assemble_vintf.
 	ctx.VisitDirectDepsWithTag(kernelConfigTag, func(m android.Module) {
 		if k, ok := m.(*configs.KernelConfigRule); ok {
 			inputPaths = append(inputPaths, k.OutputPath())
@@ -112,6 +169,7 @@
 			"inputs": strings.Join(inputPaths.Strings(), ":"),
 		},
 	})
+	g.generateValidateBuildAction(ctx, g.genFile, schema.Path())
 
 	ctx.InstallFile(android.PathForModuleInstall(ctx, "etc", relpath), outputFilename, g.genFile)
 }
@@ -126,6 +184,9 @@
 				if proptools.String(g.properties.Stem) != "" {
 					fmt.Fprintln(w, "LOCAL_MODULE_STEM :=", proptools.String(g.properties.Stem))
 				}
+				for _, path := range g.additionalDependencies {
+					fmt.Fprintln(w, "LOCAL_ADDITIONAL_DEPENDENCIES +=", path.String())
+				}
 			},
 		},
 	}
diff --git a/keymaster/4.1/support/include/keymasterV4_1/Keymaster4.h b/keymaster/4.1/support/include/keymasterV4_1/Keymaster4.h
index 75d9139..f495796 100644
--- a/keymaster/4.1/support/include/keymasterV4_1/Keymaster4.h
+++ b/keymaster/4.1/support/include/keymasterV4_1/Keymaster4.h
@@ -31,17 +31,11 @@
     // enumerate 4.1. devices.
     using WrappedIKeymasterDevice = V4_0::IKeymasterDevice;
 
-    Keymaster4(sp<V4_1::IKeymasterDevice> km4_1_dev, const hidl_string& instanceName)
-        : Keymaster(V4_1::IKeymasterDevice::descriptor, instanceName),
-          haveVersion_(false),
-          km4_0_dev_(km4_1_dev),
-          km4_1_dev_(km4_1_dev) {}
-
     Keymaster4(sp<V4_0::IKeymasterDevice> km4_0_dev, const hidl_string& instanceName)
         : Keymaster(V4_1::IKeymasterDevice::descriptor, instanceName),
           haveVersion_(false),
           km4_0_dev_(km4_0_dev),
-          km4_1_dev_() {}
+          km4_1_dev_(V4_1::IKeymasterDevice::castFrom(km4_0_dev)) {}
 
     const VersionResult& halVersion() const override {
         const_cast<Keymaster4*>(this)->getVersionIfNeeded();
diff --git a/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h b/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h
index 745ab2d..75f2c28 100644
--- a/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h
+++ b/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h
@@ -737,6 +737,8 @@
     callback.waitForEvents(sensors, kFiveHundredMs + (5 * maxMinDelay));
     activateAllSensors(false);
 
+    getEnvironment()->unregisterCallback();
+
     for (const SensorInfoType& sensor : sensors) {
         // Skip sensors that did not previously report an event
         if (lastEventTimestampMap.find(sensor.sensorHandle) == lastEventTimestampMap.end()) {
diff --git a/tv/tuner/1.0/default/Frontend.cpp b/tv/tuner/1.0/default/Frontend.cpp
index 2cff9be..6565746 100644
--- a/tv/tuner/1.0/default/Frontend.cpp
+++ b/tv/tuner/1.0/default/Frontend.cpp
@@ -81,6 +81,9 @@
 Return<Result> Frontend::scan(const FrontendSettings& settings, FrontendScanType type) {
     ALOGV("%s", __FUNCTION__);
 
+    if (mType == FrontendType::ATSC) {
+        return Result::SUCCESS;
+    }
     if (mType != FrontendType::DVBT) {
         return Result::UNAVAILABLE;
     }
diff --git a/wifi/1.0/vts/functional/wifi_sta_iface_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_sta_iface_hidl_test.cpp
index 7db0526..e311c84 100644
--- a/wifi/1.0/vts/functional/wifi_sta_iface_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_sta_iface_hidl_test.cpp
@@ -260,8 +260,8 @@
 
 /*
  * SetScanningMacOui:
- * Ensures that calls to set scanning MAC OUI will return a success status
- * code.
+ * Ensures that calls to set scanning MAC OUI will return a NOT_SUPPORTED
+ * code since it is now deprecated.
  */
 TEST_P(WifiStaIfaceHidlTest, SetScanningMacOui) {
     if (!isCapabilitySupported(
@@ -271,7 +271,7 @@
     }
     const android::hardware::hidl_array<uint8_t, 3> kOui{
         std::array<uint8_t, 3>{{0x10, 0x22, 0x33}}};
-    EXPECT_EQ(WifiStatusCode::SUCCESS,
+    EXPECT_EQ(WifiStatusCode::ERROR_NOT_SUPPORTED,
               HIDL_INVOKE(wifi_sta_iface_, setScanningMacOui, kOui).code);
 }
 
diff --git a/wifi/1.4/default/wifi_chip.cpp b/wifi/1.4/default/wifi_chip.cpp
index d64dfbf..23dd13b 100644
--- a/wifi/1.4/default/wifi_chip.cpp
+++ b/wifi/1.4/default/wifi_chip.cpp
@@ -1314,13 +1314,18 @@
                 LOG(ERROR) << "Error converting ring buffer status";
                 return;
             }
-            const auto& target = shared_ptr_this->ringbuffer_map_.find(name);
-            if (target != shared_ptr_this->ringbuffer_map_.end()) {
-                Ringbuffer& cur_buffer = target->second;
-                cur_buffer.append(data);
-            } else {
-                LOG(ERROR) << "Ringname " << name << " not found";
-                return;
+            {
+                std::unique_lock<std::mutex> lk(shared_ptr_this->lock_t);
+                const auto& target =
+                    shared_ptr_this->ringbuffer_map_.find(name);
+                if (target != shared_ptr_this->ringbuffer_map_.end()) {
+                    Ringbuffer& cur_buffer = target->second;
+                    cur_buffer.append(data);
+                } else {
+                    LOG(ERROR) << "Ringname " << name << " not found";
+                    return;
+                }
+                // unlock
             }
         };
     legacy_hal::wifi_error legacy_status =
@@ -1595,25 +1600,29 @@
         return false;
     }
     // write ringbuffers to file
-    for (const auto& item : ringbuffer_map_) {
-        const Ringbuffer& cur_buffer = item.second;
-        if (cur_buffer.getData().empty()) {
-            continue;
-        }
-        const std::string file_path_raw =
-            kTombstoneFolderPath + item.first + "XXXXXXXXXX";
-        const int dump_fd = mkstemp(makeCharVec(file_path_raw).data());
-        if (dump_fd == -1) {
-            PLOG(ERROR) << "create file failed";
-            return false;
-        }
-        unique_fd file_auto_closer(dump_fd);
-        for (const auto& cur_block : cur_buffer.getData()) {
-            if (write(dump_fd, cur_block.data(),
-                      sizeof(cur_block[0]) * cur_block.size()) == -1) {
-                PLOG(ERROR) << "Error writing to file";
+    {
+        std::unique_lock<std::mutex> lk(lock_t);
+        for (const auto& item : ringbuffer_map_) {
+            const Ringbuffer& cur_buffer = item.second;
+            if (cur_buffer.getData().empty()) {
+                continue;
+            }
+            const std::string file_path_raw =
+                kTombstoneFolderPath + item.first + "XXXXXXXXXX";
+            const int dump_fd = mkstemp(makeCharVec(file_path_raw).data());
+            if (dump_fd == -1) {
+                PLOG(ERROR) << "create file failed";
+                return false;
+            }
+            unique_fd file_auto_closer(dump_fd);
+            for (const auto& cur_block : cur_buffer.getData()) {
+                if (write(dump_fd, cur_block.data(),
+                          sizeof(cur_block[0]) * cur_block.size()) == -1) {
+                    PLOG(ERROR) << "Error writing to file";
+                }
             }
         }
+        // unlock
     }
     return true;
 }
diff --git a/wifi/1.4/default/wifi_chip.h b/wifi/1.4/default/wifi_chip.h
index 3323ade..98e18bb 100644
--- a/wifi/1.4/default/wifi_chip.h
+++ b/wifi/1.4/default/wifi_chip.h
@@ -19,6 +19,7 @@
 
 #include <list>
 #include <map>
+#include <mutex>
 
 #include <android-base/macros.h>
 #include <android/hardware/wifi/1.4/IWifiChip.h>
@@ -272,6 +273,7 @@
     bool is_valid_;
     // Members pertaining to chip configuration.
     uint32_t current_mode_id_;
+    std::mutex lock_t;
     std::vector<IWifiChip::ChipMode> modes_;
     // The legacy ring buffer callback API has only a global callback
     // registration mechanism. Use this to check if we have already
diff --git a/wifi/1.4/default/wifi_legacy_hal.cpp b/wifi/1.4/default/wifi_legacy_hal.cpp
index f596195..29123bf 100644
--- a/wifi/1.4/default/wifi_legacy_hal.cpp
+++ b/wifi/1.4/default/wifi_legacy_hal.cpp
@@ -801,13 +801,6 @@
         cmd_id, getIfaceHandle(iface_name));
 }
 
-wifi_error WifiLegacyHal::setScanningMacOui(const std::string& iface_name,
-                                            const std::array<uint8_t, 3>& oui) {
-    std::vector<uint8_t> oui_internal(oui.data(), oui.data() + oui.size());
-    return global_func_table_.wifi_set_scanning_mac_oui(
-        getIfaceHandle(iface_name), oui_internal.data());
-}
-
 wifi_error WifiLegacyHal::selectTxPowerScenario(const std::string& iface_name,
                                                 wifi_power_scenario scenario) {
     return global_func_table_.wifi_select_tx_power_scenario(
diff --git a/wifi/1.4/default/wifi_legacy_hal.h b/wifi/1.4/default/wifi_legacy_hal.h
index c697ff9..9964460 100644
--- a/wifi/1.4/default/wifi_legacy_hal.h
+++ b/wifi/1.4/default/wifi_legacy_hal.h
@@ -252,8 +252,6 @@
         const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms);
     wifi_error stopSendingOffloadedPacket(const std::string& iface_name,
                                           uint32_t cmd_id);
-    wifi_error setScanningMacOui(const std::string& iface_name,
-                                 const std::array<uint8_t, 3>& oui);
     virtual wifi_error selectTxPowerScenario(const std::string& iface_name,
                                              wifi_power_scenario scenario);
     virtual wifi_error resetTxPowerScenario(const std::string& iface_name);
diff --git a/wifi/1.4/default/wifi_sta_iface.cpp b/wifi/1.4/default/wifi_sta_iface.cpp
index e2ea6e4..49f383a 100644
--- a/wifi/1.4/default/wifi_sta_iface.cpp
+++ b/wifi/1.4/default/wifi_sta_iface.cpp
@@ -578,10 +578,9 @@
 }
 
 WifiStatus WifiStaIface::setScanningMacOuiInternal(
-    const std::array<uint8_t, 3>& oui) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setScanningMacOui(ifname_, oui);
-    return createWifiStatusFromLegacyError(legacy_status);
+    const std::array<uint8_t, 3>& /* oui */) {
+    // deprecated.
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
 }
 
 WifiStatus WifiStaIface::startDebugPacketFateMonitoringInternal() {