tree 3c5e471e31e084875f5dbfcd038c03a96bcd0b24
parent 5ef8f96efceb28869dbe56b2583128fedada1b56
author Ady Abraham <adyabr@google.com> 1545098331 -0800
committer Ady Abraham <adyabr@google.com> 1549330610 -0800

SurfaceFlinger: check fence when acquiring buffer with PTS

This is a fix for a condition where SurfaceFlinger may pass
a buffer to HWC before the fence was signaled. This can happen when
presentation timestamp is set and the buffer behind the front of
the queue has current timestamp.

Test: run a scenario that simulate the scenario
      (PTS is always set to the past)
Bug: 123780024
Change-Id: Ib47bc5ebc50136c54b29bd301ad8d059f3dea947