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-rw-r--r--libhwc2.1/libmaindisplay/ExynosPrimaryDisplay.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/libhwc2.1/libmaindisplay/ExynosPrimaryDisplay.cpp b/libhwc2.1/libmaindisplay/ExynosPrimaryDisplay.cpp
index 379fbdd..b1b6aee 100644
--- a/libhwc2.1/libmaindisplay/ExynosPrimaryDisplay.cpp
+++ b/libhwc2.1/libmaindisplay/ExynosPrimaryDisplay.cpp
@@ -1081,6 +1081,7 @@ void ExynosPrimaryDisplay::checkBtsReassignResource(const uint32_t vsyncPeriod,
ATRACE_CALL();
uint32_t refreshRate = static_cast<uint32_t>(round(nsecsPerSec / vsyncPeriod * 0.1f) * 10);
+ Mutex::Autolock lock(mDRMutex);
if (vsyncPeriod < btsVsyncPeriod) {
for (size_t i = 0; i < mLayers.size(); i++) {
if (mLayers[i]->mOtfMPP && mLayers[i]->mM2mMPP == nullptr &&