sf: Add check to update flags in requestDisplayModes

Change-Id: I427e0fe660daad3d21e2326836ce6ddc44e9440d
CRs-Fixed: 3709057

2 files changed, 11 insertions, 8 deletions

diff --git a/services/surfaceflinger/QtiExtension/QtiSurfaceFlingerExtension.cpp b/services/surfaceflinger/QtiExtension/QtiSurfaceFlingerExtension.cpp
index e53fbea382..d668b22f87 100644
--- a/services/surfaceflinger/QtiExtension/QtiSurfaceFlingerExtension.cpp
+++ b/services/surfaceflinger/QtiExtension/QtiSurfaceFlingerExtension.cpp
@@ -1124,10 +1124,9 @@ void QtiSurfaceFlingerExtension::qtiCheckVirtualDisplayHint(const Vector<Display
     bool createVirtualDisplay = false;
     int width = 0, height = 0, format = 0;
     {
-        if (!mQtiFlinger->mRequestDisplayModeFlag ||
-            (mQtiFlinger->mFlagThread != std::this_thread::get_id())) {
-            Mutex::Autolock lock(mQtiFlinger->mStateLock);
-        }
+        bool needLock = (!mQtiFlinger->mRequestDisplayModeFlag ||
+                        (mQtiFlinger->mFlagThread != std::this_thread::get_id()));
+        ConditionalLock lock(mQtiFlinger->mStateLock, needLock == true);
         for (const DisplayState& s : displays) {
             const ssize_t index = mQtiFlinger->mCurrentState.displays.indexOfKey(s.token);
             if (index < 0) continue;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index efed751f2a..f10e07b4ee 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4088,8 +4088,10 @@ void SurfaceFlinger::requestDisplayModes(std::vector<display::DisplayModeRequest
     /* QTI_BEGIN */
     // Setting mRequestDisplayModeFlag as true and storing thread Id to avoid acquiring the same
     // mutex again in a single thread
-    mRequestDisplayModeFlag = true;
-    mFlagThread = std::this_thread::get_id();
+    if (std::this_thread::get_id() != mMainThreadId) {
+        mRequestDisplayModeFlag = true;
+        mFlagThread = std::this_thread::get_id();
+    }
     /* QTI_END */
 
     for (auto& request : modeRequests) {
@@ -4124,8 +4126,10 @@ void SurfaceFlinger::requestDisplayModes(std::vector<display::DisplayModeRequest
         }
     }
     /* QTI_BEGIN */
-    mRequestDisplayModeFlag = false;
-    mFlagThread = mMainThreadId;
+    if (std::this_thread::get_id() != mMainThreadId) {
+        mRequestDisplayModeFlag = false;
+        mFlagThread = mMainThreadId;
+    }
     /* QTI_END */
 }