diff --git a/include/gui/GraphicBufferAlloc.h b/include/gui/GraphicBufferAlloc.h
index 9e18907..54c9829 100644
--- a/include/gui/GraphicBufferAlloc.h
+++ b/include/gui/GraphicBufferAlloc.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_SF_GRAPHIC_BUFFER_ALLOC_H
-#define ANDROID_SF_GRAPHIC_BUFFER_ALLOC_H
+#ifndef ANDROID_GUI_GRAPHIC_BUFFER_ALLOC_H
+#define ANDROID_GUI_GRAPHIC_BUFFER_ALLOC_H
 
 #include <stdint.h>
 #include <sys/types.h>
@@ -25,10 +25,16 @@
 #include <utils/Errors.h>
 
 namespace android {
-// ---------------------------------------------------------------------------
 
 class GraphicBuffer;
 
+/*
+ * Concrete implementation of the IGraphicBufferAlloc interface.
+ *
+ * This can create GraphicBuffer instance across processes. This is mainly used
+ * by surfaceflinger.
+ */
+
 class GraphicBufferAlloc : public BnGraphicBufferAlloc {
 public:
     GraphicBufferAlloc();
@@ -40,7 +46,6 @@
 };
 
 
-// ---------------------------------------------------------------------------
-}; // namespace android
+} // namespace android
 
-#endif // ANDROID_SF_GRAPHIC_BUFFER_ALLOC_H
+#endif // ANDROID_GUI_GRAPHIC_BUFFER_ALLOC_H
diff --git a/include/ui/GraphicBuffer.h b/include/ui/GraphicBuffer.h
index 95ca0f3..759c9ec 100644
--- a/include/ui/GraphicBuffer.h
+++ b/include/ui/GraphicBuffer.h
@@ -76,11 +76,6 @@
     GraphicBuffer(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
             uint32_t inUsage, std::string requestorName = "<Unknown>");
 
-    // creates w * h buffer with a layer count
-    GraphicBuffer(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
-            uint32_t inLayerCount, uint32_t inUsage,
-            std::string requestorName = "<Unknown>");
-
     // creates w * h buffer with a layer count using gralloc1
     GraphicBuffer(uint32_t inWidth, uint32_t inHeight, PixelFormat inFormat,
             uint32_t inLayerCount, uint64_t inProducerUsage,
diff --git a/libs/gui/GraphicBufferAlloc.cpp b/libs/gui/GraphicBufferAlloc.cpp
index f2d3677..cc7d403 100644
--- a/libs/gui/GraphicBufferAlloc.cpp
+++ b/libs/gui/GraphicBufferAlloc.cpp
@@ -15,21 +15,15 @@
  ** limitations under the License.
  */
 
-#include <log/log.h>
-
-#include <ui/GraphicBuffer.h>
-
 #include <gui/GraphicBufferAlloc.h>
 
-// ----------------------------------------------------------------------------
+#include <log/log.h>
+
+
 namespace android {
-// ----------------------------------------------------------------------------
 
-GraphicBufferAlloc::GraphicBufferAlloc() {
-}
-
-GraphicBufferAlloc::~GraphicBufferAlloc() {
-}
+GraphicBufferAlloc::GraphicBufferAlloc() = default;
+GraphicBufferAlloc::~GraphicBufferAlloc() = default;
 
 sp<GraphicBuffer> GraphicBufferAlloc::createGraphicBuffer(uint32_t width,
         uint32_t height, PixelFormat format, uint32_t layerCount,
@@ -44,15 +38,12 @@
         if (err == NO_MEMORY) {
             GraphicBuffer::dumpAllocationsToSystemLog();
         }
-        ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%u, h=%u, lc=%u) "
-             "failed (%s), handle=%p",
+        ALOGE("GraphicBufferAlloc::createGraphicBuffer(w=%u, h=%u, lc=%u) failed (%s), handle=%p",
                 width, height, layerCount, strerror(-err),
                 graphicBuffer->handle);
-        return 0;
+        graphicBuffer.clear();
     }
     return graphicBuffer;
 }
 
-// ----------------------------------------------------------------------------
-}; // namespace android
-// ----------------------------------------------------------------------------
+} // namespace android
diff --git a/libs/ui/GraphicBuffer.cpp b/libs/ui/GraphicBuffer.cpp
index 5ef95ec..b544426 100644
--- a/libs/ui/GraphicBuffer.cpp
+++ b/libs/ui/GraphicBuffer.cpp
@@ -50,8 +50,8 @@
     height =
     stride =
     format =
-    layerCount =
     usage  = 0;
+    layerCount = 0;
     handle = NULL;
 }
 
@@ -64,8 +64,8 @@
     height =
     stride =
     format =
-    layerCount =
     usage  = 0;
+    layerCount = 0;
     handle = NULL;
     mInitCheck = initSize(inWidth, inHeight, inFormat, 1, inUsage, inUsage,
             std::move(requestorName));
@@ -81,8 +81,8 @@
     height =
     stride =
     format =
-    layerCount =
     usage  = 0;
+    layerCount = 0;
     handle = NULL;
     mInitCheck = initSize(inWidth, inHeight, inFormat, inLayerCount,
             producerUsage, consumerUsage, std::move(requestorName));