commit 22ffb117b0c2a906bd04aef9738a52223cdd1dce
author Mathias Agopian <mathias@google.com> Tue Apr 10 21:04:02 2012 -0700
committer Mathias Agopian <mathias@google.com> Wed Apr 11 15:31:40 2012 -0700
tree 5d5b8915428be715ec6db9ace523f78668f4f50e
parent b60314a12f3336b27d73920805ab07cbc498d857

make sure to disable VSYNC while screen is off

Change-Id: If1894c43b0a39a2851e1280a35ae77bccd6d9abd

services/surfaceflinger/DisplayHardware/HWComposer.cpp

diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 6ae03c9..b87e191 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -205,6 +205,9 @@
 
 status_t HWComposer::release() const {
     if (mHwc) {
+        if (mHwc->common.version >= HWC_DEVICE_API_VERSION_0_3) {
+            mHwc->methods->eventControl(mHwc, HWC_EVENT_VSYNC, 0);
+        }
         int err = mHwc->set(mHwc, NULL, NULL, NULL);
         return (status_t)err;
     }