tree 7d58833b548c9c66ec7f8f9bdd022661b78e9c5f
parent bedc2c8cfb88a5268352352b9b7998214c295dbe
author Arun Kumar K.R <akumarkr@codeaurora.org> 1364521266 -0700
committer Arun Kumar K.R <akumarkr@codeaurora.org> 1364577353 -0700

hwc: clean up overlay on external display blank

- On suspend, SurfaceFlinger calls hwc_blank on primary and
  external separately, inbetween these calls there might be a
  update, which leads to acquiring overlay pipes for external
  which will not be cleared and results in showing up stale
  frame on external display
- This change clears all the overlay pipes used on every blank

Change-Id: I44d62b7d0fcd992cf8a26bb0c21df77952bc1381
CRs-fixed: 464070