make sure to reset the framenumber when a buffer is marked FREE

Change-Id: Ic45929f35553de209801f74e8006fb1bf0b25b45

1 files changed, 3 insertions, 0 deletions

diff --git a/libs/gui/BufferQueue.cpp b/libs/gui/BufferQueue.cpp
index cf8143135e..73bd4888ba 100644
--- a/libs/gui/BufferQueue.cpp
+++ b/libs/gui/BufferQueue.cpp
@@ -555,6 +555,9 @@ status_t BufferQueue::queueBuffer(int buf,
                 // buffer slot currently queued is marked free if still tracked
                 if (stillTracking(front)) {
                     mSlots[front->mBuf].mBufferState = BufferSlot::FREE;
+                    // reset the frame number of the freed buffer so that it is the first in
+                    // line to be dequeued again.
+                    mSlots[front->mBuf].mFrameNumber = 0;
                 }
                 // and we record the new buffer in the queued list
                 *front = item;