Merge ab/7633965

Bug: 169893837
Merged-In: I2a2d02a0d7e67ee9577857a210cb6157683e5598
Change-Id: Iecdf0a17afe650483461978b42161940ce002101

1 files changed, 6 insertions, 1 deletions

diff --git a/services/surfaceflinger/BufferQueueLayer.cpp b/services/surfaceflinger/BufferQueueLayer.cpp
index c64371b84a..6b6d43425d 100644
--- a/services/surfaceflinger/BufferQueueLayer.cpp
+++ b/services/surfaceflinger/BufferQueueLayer.cpp
@@ -125,11 +125,16 @@ bool BufferQueueLayer::isBufferDue(nsecs_t expectedPresentTime) const {
 // -----------------------------------------------------------------------
 
 bool BufferQueueLayer::fenceHasSignaled() const {
+    Mutex::Autolock lock(mQueueItemLock);
+
+    if (SurfaceFlinger::enableLatchUnsignaled) {
+        return true;
+    }
+
     if (!hasFrameUpdate()) {
         return true;
     }
 
-    Mutex::Autolock lock(mQueueItemLock);
     if (mQueueItems[0].item.mIsDroppable) {
         // Even though this buffer's fence may not have signaled yet, it could
         // be replaced by another buffer before it has a chance to, which means