diff --git a/CleanSpec.mk b/CleanSpec.mk
index fcaced0..0900eea 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -68,3 +68,4 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/seccomp_policy/configstore@1.0.policy)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/seccomp_policy/configstore@1.1.policy)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/bin/hw/android.hardware.configstore@1.1-service)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/init/android.hardware.configstore@1.1-service.rc)
diff --git a/automotive/vehicle/2.0/types.hal b/automotive/vehicle/2.0/types.hal
index 48b2ec2..7fe8377 100644
--- a/automotive/vehicle/2.0/types.hal
+++ b/automotive/vehicle/2.0/types.hal
@@ -603,7 +603,13 @@
      *
      * This property corresponds to the low fuel warning on the dashboard.
      * Once FUEL_LEVEL_LOW is set, it should not be cleared until more fuel is
-     * added to the vehicle.
+     * added to the vehicle.  This property may take into account all fuel
+     * sources for a vehicle - for example:
+     *
+     *   For a gas powered vehicle, this property is based soley on gas level.
+     *   For a battery powered vehicle, this property is based solely on battery level.
+     *   For a hybrid vehicle, this property may be based on the combination of gas and battery
+     *      levels, at the OEM's discretion.
      *
      * @change_mode VehiclePropertyChangeMode:ON_CHANGE
      * @access VehiclePropertyAccess:READ
diff --git a/camera/device/3.4/default/ExternalCameraDevice.cpp b/camera/device/3.4/default/ExternalCameraDevice.cpp
index e093822..e7361dd 100644
--- a/camera/device/3.4/default/ExternalCameraDevice.cpp
+++ b/camera/device/3.4/default/ExternalCameraDevice.cpp
@@ -90,7 +90,7 @@
 }
 
 Return<Status> ExternalCameraDevice::setTorchMode(TorchMode) {
-    return Status::METHOD_NOT_SUPPORTED;
+    return Status::OPERATION_NOT_SUPPORTED;
 }
 
 Return<void> ExternalCameraDevice::open(
diff --git a/camera/provider/2.4/default/ExternalCameraProvider.cpp b/camera/provider/2.4/default/ExternalCameraProvider.cpp
index a4046d0..1cec0e5 100644
--- a/camera/provider/2.4/default/ExternalCameraProvider.cpp
+++ b/camera/provider/2.4/default/ExternalCameraProvider.cpp
@@ -105,8 +105,9 @@
 
 Return<void> ExternalCameraProvider::isSetTorchModeSupported(
         isSetTorchModeSupported_cb _hidl_cb) {
-    // No torch mode support for USB camera
-    _hidl_cb (Status::OK, false);
+    // setTorchMode API is supported, though right now no external camera device
+    // has a flash unit.
+    _hidl_cb (Status::OK, true);
     return Void();
 }
 
diff --git a/compatibility_matrices/compatibility_matrix.3.xml b/compatibility_matrices/compatibility_matrix.3.xml
index e13d293..fc7bad6 100644
--- a/compatibility_matrices/compatibility_matrix.3.xml
+++ b/compatibility_matrices/compatibility_matrix.3.xml
@@ -445,7 +445,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.wifi.hostapd</name>
-        <version>1.0</version>
+        <version>1.0-1</version>
         <interface>
             <name>IHostapd</name>
             <instance>default</instance>
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h
index 86525b8..095189f 100644
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h
+++ b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h
@@ -102,6 +102,7 @@
         }
 
         void onRefresh(Display display) {
+            mResources->setDisplayMustValidateState(display, true);
             auto ret = mCallback->onRefresh(display);
             ALOGE_IF(!ret.isOk(), "failed to send onRefresh: %s", ret.description().c_str());
         }
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h
index 36aa64e..d87110a 100644
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h
+++ b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h
@@ -258,6 +258,7 @@
 
         auto err = mHal->validateDisplay(mCurrentDisplay, &changedLayers, &compositionTypes,
                                          &displayRequestMask, &requestedLayers, &requestMasks);
+        mResources->setDisplayMustValidateState(mCurrentDisplay, false);
         if (err == Error::NONE) {
             mWriter.setChangedCompositionTypes(changedLayers, compositionTypes);
             mWriter.setDisplayRequests(displayRequestMask, requestedLayers, requestMasks);
@@ -278,7 +279,9 @@
             int presentFence = -1;
             std::vector<Layer> layers;
             std::vector<int> fences;
-            auto err = mHal->presentDisplay(mCurrentDisplay, &presentFence, &layers, &fences);
+            auto err = mResources->mustValidateDisplay(mCurrentDisplay)
+                           ? Error::NOT_VALIDATED
+                           : mHal->presentDisplay(mCurrentDisplay, &presentFence, &layers, &fences);
             if (err == Error::NONE) {
                 mWriter.setPresentOrValidateResult(1);
                 mWriter.setPresentFence(presentFence);
@@ -296,6 +299,7 @@
 
         auto err = mHal->validateDisplay(mCurrentDisplay, &changedLayers, &compositionTypes,
                                          &displayRequestMask, &requestedLayers, &requestMasks);
+        mResources->setDisplayMustValidateState(mCurrentDisplay, false);
         if (err == Error::NONE) {
             mWriter.setPresentOrValidateResult(0);
             mWriter.setChangedCompositionTypes(changedLayers, compositionTypes);
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h
index 7bb3692..2cbf044 100644
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h
+++ b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h
@@ -216,7 +216,8 @@
         : mType(type),
           mClientTargetCache(importer),
           mOutputBufferCache(importer, ComposerHandleCache::HandleType::BUFFER,
-                             outputBufferCacheSize) {}
+                             outputBufferCacheSize),
+          mMustValidate(true) {}
 
     bool initClientTargetCache(uint32_t cacheSize) {
         return mClientTargetCache.initCache(ComposerHandleCache::HandleType::BUFFER, cacheSize);
@@ -263,10 +264,15 @@
         return layers;
     }
 
+    void setMustValidateState(bool mustValidate) { mMustValidate = mustValidate; }
+
+    bool mustValidate() const { return mMustValidate; }
+
    protected:
     const DisplayType mType;
     ComposerHandleCache mClientTargetCache;
     ComposerHandleCache mOutputBufferCache;
+    bool mMustValidate;
 
     std::unordered_map<Layer, std::unique_ptr<ComposerLayerResource>> mLayerResources;
 };
@@ -389,6 +395,23 @@
                                                        outStreamHandle, outReplacedStream);
     }
 
+    void setDisplayMustValidateState(Display display, bool mustValidate) {
+        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+        auto* displayResource = findDisplayResourceLocked(display);
+        if (displayResource) {
+            displayResource->setMustValidateState(mustValidate);
+        }
+    }
+
+    bool mustValidateDisplay(Display display) {
+        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+        auto* displayResource = findDisplayResourceLocked(display);
+        if (displayResource) {
+            return displayResource->mustValidate();
+        }
+        return false;
+    }
+
    protected:
     virtual std::unique_ptr<ComposerDisplayResource> createDisplayResource(
         ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize) {
diff --git a/graphics/composer/2.1/utils/passthrough/include/composer-passthrough/2.1/HwcHal.h b/graphics/composer/2.1/utils/passthrough/include/composer-passthrough/2.1/HwcHal.h
index 964e75b..436e461 100644
--- a/graphics/composer/2.1/utils/passthrough/include/composer-passthrough/2.1/HwcHal.h
+++ b/graphics/composer/2.1/utils/passthrough/include/composer-passthrough/2.1/HwcHal.h
@@ -111,7 +111,6 @@
     }
 
     void registerEventCallback(hal::ComposerHal::EventCallback* callback) override {
-        mMustValidateDisplay = true;
         mEventCallback = callback;
 
         mDispatch.registerCallback(mDevice, HWC2_CALLBACK_HOTPLUG, this,
@@ -331,7 +330,6 @@
         uint32_t typesCount = 0;
         uint32_t reqsCount = 0;
         int32_t err = mDispatch.validateDisplay(mDevice, display, &typesCount, &reqsCount);
-        mMustValidateDisplay = false;
 
         if (err != HWC2_ERROR_NONE && err != HWC2_ERROR_HAS_CHANGES) {
             return static_cast<Error>(err);
@@ -384,10 +382,6 @@
 
     Error presentDisplay(Display display, int32_t* outPresentFence, std::vector<Layer>* outLayers,
                          std::vector<int32_t>* outReleaseFences) override {
-        if (mMustValidateDisplay) {
-            return Error::NOT_VALIDATED;
-        }
-
         *outPresentFence = -1;
         int32_t err = mDispatch.presentDisplay(mDevice, display, outPresentFence);
         if (err != HWC2_ERROR_NONE) {
@@ -593,7 +587,6 @@
 
     static void refreshHook(hwc2_callback_data_t callbackData, hwc2_display_t display) {
         auto hal = static_cast<HwcHalImpl*>(callbackData);
-        hal->mMustValidateDisplay = true;
         hal->mEventCallback->onRefresh(display);
     }
 
@@ -654,8 +647,6 @@
     } mDispatch = {};
 
     hal::ComposerHal::EventCallback* mEventCallback = nullptr;
-
-    std::atomic<bool> mMustValidateDisplay{true};
 };
 
 }  // namespace detail
diff --git a/wifi/hostapd/1.1/Android.bp b/wifi/hostapd/1.1/Android.bp
new file mode 100644
index 0000000..d4170b6
--- /dev/null
+++ b/wifi/hostapd/1.1/Android.bp
@@ -0,0 +1,20 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.wifi.hostapd@1.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IHostapd.hal",
+        "IHostapdCallback.hal",
+    ],
+    interfaces: [
+        "android.hardware.wifi.hostapd@1.0",
+        "android.hardware.wifi.supplicant@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
+
diff --git a/wifi/hostapd/1.1/IHostapd.hal b/wifi/hostapd/1.1/IHostapd.hal
new file mode 100644
index 0000000..4e59ffc
--- /dev/null
+++ b/wifi/hostapd/1.1/IHostapd.hal
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2018 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
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.hostapd@1.1;
+
+import @1.0::IHostapd;
+import @1.0::HostapdStatus;
+
+import IHostapdCallback;
+
+/**
+ * Top-level object for managing SoftAPs.
+ */
+interface IHostapd extends @1.0::IHostapd {
+    /**
+     * Register for callbacks from the hostapd service.
+     *
+     * These callbacks are invoked for global events that are not specific
+     * to any interface or network. Registration of multiple callback
+     * objects is supported. These objects must be deleted when the corresponding
+     * client process is dead.
+     *
+     * @param callback An instance of the |IHostapdCallback| HIDL interface
+     *     object.
+     * @return status Status of the operation.
+     *     Possible status codes:
+     *     |HostapdStatusCode.SUCCESS|,
+     *     |HostapdStatusCode.FAILURE_UNKNOWN|
+     */
+    registerCallback(IHostapdCallback callback)
+        generates (HostapdStatus status);
+};
diff --git a/wifi/hostapd/1.1/IHostapdCallback.hal b/wifi/hostapd/1.1/IHostapdCallback.hal
new file mode 100644
index 0000000..1d314fe
--- /dev/null
+++ b/wifi/hostapd/1.1/IHostapdCallback.hal
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2018 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
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.hostapd@1.1;
+
+/**
+ * Top-level object for managing SoftAPs.
+ */
+interface IHostapdCallback {
+    /**
+     * Invoked when an asynchronous failure is encountered in one of the access
+     * points added via |IHostapd.addAccessPoint|.
+     *
+     * @param ifaceName Name of the interface.
+     */
+    oneway onFailure(string ifaceName);
+};