commit d6429af2fe1d933469a32b03c1cdb81ad7699b68
author Sushil Chauhan <sushilchauhan@codeaurora.org> Thu Nov 15 11:34:27 2018 -0800
committer Gerrit - the friendly Code Review server <code-review@localhost> Mon Nov 19 12:11:50 2018 -0800
tree 3a1a5ed3841ef190096d9508205a8e6ab61f8288
parent ddbc830ec8f690ebff89879b93706d180db8aa68

hwc2: Fix validation reset from QDCM CMD Handler

QDCM Command Handler doesn't run in same thread as HWC main thread.
The validation reset from this thread needs to wait on the Sequence
Scope lock, so that the validate state of display doesn't get reset
between the Validate and Present phase of the current draw cycle.

CRs-Fixed: 2342280
Change-Id: I1c311ab40d4f7886129782ab15c05a8051dfd80a

sdm/libs/hwc2/hwc_session.cpp

diff --git a/sdm/libs/hwc2/hwc_session.cpp b/sdm/libs/hwc2/hwc_session.cpp
index 56070fb..244c66d 100644
--- a/sdm/libs/hwc2/hwc_session.cpp
+++ b/sdm/libs/hwc2/hwc_session.cpp
@@ -2024,6 +2024,8 @@
   HWCColorManager::MarshallStructIntoParcel(resp_payload, output_parcel);
   req_payload.DestroyPayload();
   resp_payload.DestroyPayload();
+
+  SEQUENCE_WAIT_SCOPE_LOCK(locker_[display_id]);
   hwc_display_[display_id]->ResetValidation();
 
   return ret;