diff --git a/libs/gui/ISurfaceComposerClient.cpp b/libs/gui/ISurfaceComposerClient.cpp
index de4d8c1..2ecb908 100644
--- a/libs/gui/ISurfaceComposerClient.cpp
+++ b/libs/gui/ISurfaceComposerClient.cpp
@@ -51,17 +51,19 @@
         : BpInterface<ISurfaceComposerClient>(impl) {
     }
 
-    virtual status_t createSurface(const String8& name, uint32_t w,
-            uint32_t h, PixelFormat format, uint32_t flags,
+    virtual ~BpSurfaceComposerClient();
+
+    virtual status_t createSurface(const String8& name, uint32_t width,
+            uint32_t height, PixelFormat format, uint32_t flags,
             sp<IBinder>* handle,
             sp<IGraphicBufferProducer>* gbp) {
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
         data.writeString8(name);
-        data.writeInt32(w);
-        data.writeInt32(h);
-        data.writeInt32(format);
-        data.writeInt32(flags);
+        data.writeUint32(width);
+        data.writeUint32(height);
+        data.writeInt32(static_cast<int32_t>(format));
+        data.writeUint32(flags);
         remote()->transact(CREATE_SURFACE, data, &reply);
         *handle = reply.readStrongBinder();
         *gbp = interface_cast<IGraphicBufferProducer>(reply.readStrongBinder());
@@ -94,6 +96,10 @@
     }
 };
 
+// Out-of-line virtual method definition to trigger vtable emission in this
+// translation unit (see clang warning -Wweak-vtables)
+BpSurfaceComposerClient::~BpSurfaceComposerClient() {}
+
 IMPLEMENT_META_INTERFACE(SurfaceComposerClient, "android.ui.ISurfaceComposerClient");
 
 // ----------------------------------------------------------------------
@@ -105,31 +111,31 @@
         case CREATE_SURFACE: {
             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
             String8 name = data.readString8();
-            uint32_t w = data.readInt32();
-            uint32_t h = data.readInt32();
-            PixelFormat format = data.readInt32();
-            uint32_t flags = data.readInt32();
+            uint32_t width = data.readUint32();
+            uint32_t height = data.readUint32();
+            PixelFormat format = static_cast<PixelFormat>(data.readInt32());
+            uint32_t createFlags = data.readUint32();
             sp<IBinder> handle;
             sp<IGraphicBufferProducer> gbp;
-            status_t result = createSurface(name, w, h, format, flags,
-                    &handle, &gbp);
+            status_t result = createSurface(name, width, height, format,
+                    createFlags, &handle, &gbp);
             reply->writeStrongBinder(handle);
             reply->writeStrongBinder(IInterface::asBinder(gbp));
             reply->writeInt32(result);
             return NO_ERROR;
-        } break;
+        }
         case DESTROY_SURFACE: {
             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
             reply->writeInt32(destroySurface( data.readStrongBinder() ) );
             return NO_ERROR;
-        } break;
+        }
        case CLEAR_LAYER_FRAME_STATS: {
             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
             sp<IBinder> handle = data.readStrongBinder();
             status_t result = clearLayerFrameStats(handle);
             reply->writeInt32(result);
             return NO_ERROR;
-        } break;
+        }
         case GET_LAYER_FRAME_STATS: {
             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
             sp<IBinder> handle = data.readStrongBinder();
@@ -138,7 +144,7 @@
             reply->write(stats);
             reply->writeInt32(result);
             return NO_ERROR;
-        } break;
+        }
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }