diff --git a/libs/ui/Surface.cpp b/libs/ui/Surface.cpp
index 2b6905f..4abb7f6 100644
--- a/libs/ui/Surface.cpp
+++ b/libs/ui/Surface.cpp
@@ -414,7 +414,6 @@
     android_native_window_t::lockBuffer       = lockBuffer;
     android_native_window_t::queueBuffer      = queueBuffer;
     android_native_window_t::query            = query;
-    android_native_window_t::perform          = perform;
     mSwapRectangle.makeInvalid();
     DisplayInfo dinfo;
     SurfaceComposerClient::getDisplayInfo(0, &dinfo);
@@ -424,8 +423,6 @@
     const_cast<int&>(android_native_window_t::minSwapInterval) = 1;
     const_cast<int&>(android_native_window_t::maxSwapInterval) = 1;
     const_cast<uint32_t&>(android_native_window_t::flags) = 0;
-    // be default we request a hardware surface
-    mUsage = GRALLOC_USAGE_HW_RENDER;
 }
 
 
@@ -515,17 +512,6 @@
     return self->query(what, value);
 }
 
-int Surface::perform(android_native_window_t* window, 
-        int operation, ...)
-{
-    va_list args;
-    va_start(args, operation);
-    Surface* self = getSelf(window);
-    int res = self->perform(operation, args);
-    va_end(args);
-    return res;
-}
-
 // ----------------------------------------------------------------------------
 
 status_t Surface::dequeueBuffer(sp<SurfaceBuffer>* buffer)
@@ -575,7 +561,7 @@
 
     volatile const surface_info_t* const back = lcblk->surface + backIdx;
     if (back->flags & surface_info_t::eNeedNewBuffer) {
-        err = getBufferLocked(backIdx, mUsage);
+        err = getBufferLocked(backIdx);
     }
 
     if (err == NO_ERROR) {
@@ -641,20 +627,6 @@
     return BAD_VALUE;
 }
 
-int Surface::perform(int operation, va_list args)
-{
-    int res = NO_ERROR;
-    switch (operation) {
-        case NATIVE_WINDOW_SET_USAGE:
-            mUsage = va_arg(args, int);
-            break;
-        default:
-            res = NAME_NOT_FOUND;
-            break;
-    }
-    return res;
-}
-
 // ----------------------------------------------------------------------------
 
 status_t Surface::lock(SurfaceInfo* info, bool blocking) {
@@ -664,9 +636,6 @@
 status_t Surface::lock(SurfaceInfo* other, Region* dirtyIn, bool blocking) 
 {
     // FIXME: needs some locking here
-
-    // we're intending to do software rendering from this point
-    mUsage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN;
     
     sp<SurfaceBuffer> backBuffer;
     status_t err = dequeueBuffer(&backBuffer);
@@ -756,10 +725,10 @@
     mSwapRectangle = r;
 }
 
-status_t Surface::getBufferLocked(int index, int usage)
+status_t Surface::getBufferLocked(int index)
 {
     status_t err = NO_MEMORY;
-    sp<SurfaceBuffer> buffer = mSurface->getBuffer(usage);
+    sp<SurfaceBuffer> buffer = mSurface->getBuffer();
     LOGE_IF(buffer==0, "ISurface::getBuffer() returned NULL");
     if (buffer != 0) {
         sp<SurfaceBuffer>& currentBuffer(mBuffers[index]);