diff --git a/libs/gui/BufferQueue.cpp b/libs/gui/BufferQueue.cpp
index 590946a..086e298 100644
--- a/libs/gui/BufferQueue.cpp
+++ b/libs/gui/BufferQueue.cpp
@@ -314,9 +314,8 @@
                      * the consumer may still have pending reads of the
                      * buffers in flight.
                      */
-                    bool isOlder = mSlots[i].mFrameNumber <
-                            mSlots[found].mFrameNumber;
-                    if (found < 0 || isOlder) {
+                    if ((found < 0) ||
+                            mSlots[i].mFrameNumber < mSlots[found].mFrameNumber) {
                         found = i;
                     }
                 }
diff --git a/opengl/libs/EGL/egl.cpp b/opengl/libs/EGL/egl.cpp
index 96e1cba..0d4bed5 100644
--- a/opengl/libs/EGL/egl.cpp
+++ b/opengl/libs/EGL/egl.cpp
@@ -124,6 +124,12 @@
 void initEglDebugLevel() {
     int propertyLevel = 0;
     char value[PROPERTY_VALUE_MAX];
+
+    // check system property only on userdebug or eng builds
+    property_get("ro.debuggable", value, "0");
+    if (value[0] == '0')
+        return;
+
     property_get("debug.egl.debug_proc", value, "");
     if (strlen(value) > 0) {
         long pid = getpid();
diff --git a/opengl/specs/EGL_ANDROID_native_fence_sync.txt b/opengl/specs/EGL_ANDROID_native_fence_sync.txt
index 8273be4..ee05b40 100644
--- a/opengl/specs/EGL_ANDROID_native_fence_sync.txt
+++ b/opengl/specs/EGL_ANDROID_native_fence_sync.txt
@@ -100,10 +100,10 @@
       EGL_SYNC_TYPE_KHR                  EGL_SYNC_NATIVE_FENCE_ANDROID
       EGL_SYNC_STATUS_KHR                EGL_UNSIGNALED_KHR
       EGL_SYNC_CONDITION_KHR             EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR
-      EGL_SYNC_NATIVE_FENCE_FD_ANDROID   EGL_NO_NATIVE_FENCE_ANDROID
+      EGL_SYNC_NATIVE_FENCE_FD_ANDROID   EGL_NO_NATIVE_FENCE_FD_ANDROID
 
     If the EGL_SYNC_NATIVE_FENCE_FD_ANDROID attribute is not
-    EGL_NO_NATIVE_FENCE_ANDROID then the EGL_SYNC_CONDITION_KHR attribute is
+    EGL_NO_NATIVE_FENCE_FD_ANDROID then the EGL_SYNC_CONDITION_KHR attribute is
     set to EGL_SYNC_NATIVE_FENCE_SIGNALED_ANDROID and the EGL_SYNC_STATUS_KHR
     attribute is set to reflect the signal status of the native fence object.
     Additionally, the EGL implementation assumes ownership of the file
@@ -114,7 +114,7 @@
 
     "When a fence sync object is created or when an EGL native fence sync
     object is created with the EGL_SYNC_NATIVE_FENCE_FD_ANDROID attribute set
-    to EGL_NO_NATIVE_FENCE_ANDROID, eglCreateSyncKHR also inserts a fence
+    to EGL_NO_NATIVE_FENCE_FD_ANDROID, eglCreateSyncKHR also inserts a fence
     command into the command stream of the bound client API's current context
     (i.e., the context returned by eglGetCurrentContext), and associates it
     with the newly created sync object.
@@ -157,8 +157,9 @@
         empty (containing only EGL_NONE), EGL_NO_SYNC_KHR is returned and an
         EGL_BAD_ATTRIBUTE error is generated.
       * If <type> is EGL_SYNC_NATIVE_FENCE_ANDROID and <attrib_list> contains
-        an attribute other than EGL_SYNC_NATIVE_FENCE_FD_ANDROID, EGL_NO_SYNC_KHR is
-        returned and an EGL_BAD_ATTRIBUTE error is generated.
+        an attribute other than EGL_SYNC_NATIVE_FENCE_FD_ANDROID,
+        EGL_NO_SYNC_KHR is returned and an EGL_BAD_ATTRIBUTE error is
+        generated.
       * If <type> is not a supported type of sync object,
         EGL_NO_SYNC_KHR is returned and an EGL_BAD_ATTRIBUTE error is
         generated.
@@ -193,8 +194,8 @@
     "If no errors are generated, EGL_TRUE is returned, and <sync> will no
     longer be the handle of a valid sync object.  Additionally, if <sync> is an
     EGL native fence sync object and the EGL_SYNC_NATIVE_FENCE_FD_ANDROID
-    attribute is not EGL_NO_NATIVE_FENCE_ANDROID then that file descriptor is
-    closed."
+    attribute is not EGL_NO_NATIVE_FENCE_FD_ANDROID then that file descriptor
+    is closed."
 
     Add the following after the last paragraph of Section 3.8.1 (Sync
     Objects), added by KHR_fence_sync
@@ -213,11 +214,11 @@
     ------
 
       * If <sync> is not a valid sync object for <dpy>,
-        EGL_NO_NATIVE_FENCE_ANDROID is returned and an EGL_BAD_PARAMETER
+        EGL_NO_NATIVE_FENCE_FD_ANDROID is returned and an EGL_BAD_PARAMETER
         error is generated.
       * If the EGL_SYNC_NATIVE_FENCE_FD_ANDROID attribute of <sync> is
-        EGL_NO_NATIVE_FENCE_ANDROID, EGL_NO_NATIVE_FENCE_ANDROID is returned
-        and an EGL_BAD_PARAMETER error is generated.
+        EGL_NO_NATIVE_FENCE_FD_ANDROID, EGL_NO_NATIVE_FENCE_FD_ANDROID is
+        returned and an EGL_BAD_PARAMETER error is generated.
       * If <dpy> does not match the display passed to eglCreateSyncKHR
         when <sync> was created, the behaviour is undefined."
 
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 31d731e..2eb74b7 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -803,7 +803,9 @@
     virtual void setAcquireFenceFd(int fenceFd) {
         getLayer()->acquireFenceFd = fenceFd;
     }
-
+    virtual void setPerFrameDefaultState() {
+        //getLayer()->compositionType = HWC_FRAMEBUFFER;
+    }
     virtual void setDefaultState() {
         getLayer()->compositionType = HWC_FRAMEBUFFER;
         getLayer()->hints = 0;
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index a78ffac..7c67407 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -141,6 +141,7 @@
         virtual int32_t getCompositionType() const = 0;
         virtual uint32_t getHints() const = 0;
         virtual int getAndResetReleaseFenceFd() = 0;
+        virtual void setPerFrameDefaultState() = 0;
         virtual void setDefaultState() = 0;
         virtual void setSkip(bool skip) = 0;
         virtual void setBlending(uint32_t blending) = 0;
diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp
index db4ef87..9b03c74 100644
--- a/services/surfaceflinger/LayerBase.cpp
+++ b/services/surfaceflinger/LayerBase.cpp
@@ -300,6 +300,7 @@
 
 void LayerBase::setPerFrameData(const sp<const DisplayDevice>& hw,
         HWComposer::HWCLayerInterface& layer) {
+    layer.setPerFrameDefaultState();
     // we have to set the visible region on every frame because
     // we currently free it during onLayerDisplayed(), which is called
     // after HWComposer::commit() -- every frame.