diff --git a/include/ui/Surface.h b/include/ui/Surface.h
index 118fb83..2cedeb6 100644
--- a/include/ui/Surface.h
+++ b/include/ui/Surface.h
@@ -212,7 +212,7 @@
 
     
     void setUsage(uint32_t reqUsage);
-    bool getUsage(uint32_t* usage);
+    uint32_t getUsage() const;
     
     // constants
     sp<SurfaceComposerClient>   mClient;
@@ -227,7 +227,6 @@
     // protected by mSurfaceLock
     Rect                        mSwapRectangle;
     uint32_t                    mUsage;
-    int32_t                     mUsageChanged;
     
     // protected by mSurfaceLock. These are also used from lock/unlock
     // but in that case, they must be called form the same thread.