diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index a9217ca..aab0604 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -185,6 +185,14 @@
         return reply.readStrongBinder();
     }
 
+    virtual void destroyDisplay(const sp<IBinder>& display)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        data.writeStrongBinder(display);
+        remote()->transact(BnSurfaceComposer::DESTROY_DISPLAY, data, &reply);
+    }
+
     virtual sp<IBinder> getBuiltInDisplay(int32_t id)
     {
         Parcel data, reply;
@@ -233,12 +241,14 @@
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<IBinder> b = createConnection()->asBinder();
             reply->writeStrongBinder(b);
-        } break;
+            return NO_ERROR;
+        }
         case CREATE_GRAPHIC_BUFFER_ALLOC: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<IBinder> b = createGraphicBufferAlloc()->asBinder();
             reply->writeStrongBinder(b);
-        } break;
+            return NO_ERROR;
+        }
         case SET_TRANSACTION_STATE: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             size_t count = data.readInt32();
@@ -259,11 +269,13 @@
             }
             uint32_t flags = data.readInt32();
             setTransactionState(state, displays, flags);
-        } break;
+            return NO_ERROR;
+        }
         case BOOT_FINISHED: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             bootFinished();
-        } break;
+            return NO_ERROR;
+        }
         case CAPTURE_SCREEN: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<IBinder> display = data.readStrongBinder();
@@ -276,20 +288,22 @@
             status_t res = captureScreen(display, producer,
                     reqWidth, reqHeight, minLayerZ, maxLayerZ);
             reply->writeInt32(res);
-        } break;
+            return NO_ERROR;
+        }
         case AUTHENTICATE_SURFACE: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<IGraphicBufferProducer> bufferProducer =
                     interface_cast<IGraphicBufferProducer>(data.readStrongBinder());
             int32_t result = authenticateSurfaceTexture(bufferProducer) ? 1 : 0;
             reply->writeInt32(result);
-        } break;
+            return NO_ERROR;
+        }
         case CREATE_DISPLAY_EVENT_CONNECTION: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<IDisplayEventConnection> connection(createDisplayEventConnection());
             reply->writeStrongBinder(connection->asBinder());
             return NO_ERROR;
-        } break;
+        }
         case CREATE_DISPLAY: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             String8 displayName = data.readString8();
@@ -297,24 +311,32 @@
             sp<IBinder> display(createDisplay(displayName, secure));
             reply->writeStrongBinder(display);
             return NO_ERROR;
-        } break;
+        }
+        case DESTROY_DISPLAY: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            sp<IBinder> display = data.readStrongBinder();
+            destroyDisplay(display);
+            return NO_ERROR;
+        }
         case GET_BUILT_IN_DISPLAY: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             int32_t id = data.readInt32();
             sp<IBinder> display(getBuiltInDisplay(id));
             reply->writeStrongBinder(display);
             return NO_ERROR;
-        } break;
+        }
         case BLANK: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<IBinder> display = data.readStrongBinder();
             blank(display);
-        } break;
+            return NO_ERROR;
+        }
         case UNBLANK: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<IBinder> display = data.readStrongBinder();
             unblank(display);
-        } break;
+            return NO_ERROR;
+        }
         case GET_DISPLAY_INFO: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             DisplayInfo info;
@@ -322,10 +344,13 @@
             status_t result = getDisplayInfo(display, &info);
             memcpy(reply->writeInplace(sizeof(DisplayInfo)), &info, sizeof(DisplayInfo));
             reply->writeInt32(result);
-        } break;
-        default:
+            return NO_ERROR;
+        }
+        default: {
             return BBinder::onTransact(code, data, reply, flags);
+        }
     }
+    // should be unreachable
     return NO_ERROR;
 }