diff --git a/libgralloc/gralloc_priv.h b/libgralloc/gralloc_priv.h
index 59fbd30..1d4c3c7 100644
--- a/libgralloc/gralloc_priv.h
+++ b/libgralloc/gralloc_priv.h
@@ -81,7 +81,8 @@
 enum {
     /* Gralloc perform enums
     */
-    GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER = 0x080000001,
+    GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER =
+                                    GRALLOC_MODULE_PERFORM_PRIVATE_START,
 };
 
 #define GRALLOC_HEAP_MASK   (GRALLOC_USAGE_PRIVATE_UI_CONTIG_HEAP |\
diff --git a/libgralloc/mapper.cpp b/libgralloc/mapper.cpp
index 3088ecc..bd122dc 100644
--- a/libgralloc/mapper.cpp
+++ b/libgralloc/mapper.cpp
@@ -329,6 +329,21 @@
                 break;
 
             }
+        case GRALLOC_MODULE_PERFORM_UPDATE_BUFFER_GEOMETRY:
+            {
+                int width = va_arg(args, int);
+                int height = va_arg(args, int);
+                int format = va_arg(args, int);
+                private_handle_t* hnd =  va_arg(args, private_handle_t*);
+                if (private_handle_t::validate(hnd)) {
+                    return res;
+                }
+                hnd->width = width;
+                hnd->height = height;
+                hnd->format = format;
+                res = 0;
+            }
+            break;
         default:
             break;
     }