diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 987cc64..960fb0e 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -646,17 +646,19 @@
     return (status_t)err;
 }
 
-status_t HWComposer::release() const {
+status_t HWComposer::release(int disp) const {
+    LOG_FATAL_IF(disp >= HWC_NUM_DISPLAY_TYPES);
     if (mHwc) {
-        mHwc->eventControl(mHwc, HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0);
-        return (status_t)mHwc->blank(mHwc, 0, 1);
+        mHwc->eventControl(mHwc, disp, HWC_EVENT_VSYNC, 0);
+        return (status_t)mHwc->blank(mHwc, disp, 1);
     }
     return NO_ERROR;
 }
 
-status_t HWComposer::acquire() const {
+status_t HWComposer::acquire(int disp) const {
+    LOG_FATAL_IF(disp >= HWC_NUM_DISPLAY_TYPES);
     if (mHwc) {
-        return (status_t)mHwc->blank(mHwc, 0, 0);
+        return (status_t)mHwc->blank(mHwc, disp, 0);
     }
     return NO_ERROR;
 }
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index 8f66651..633ca9c 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -92,10 +92,10 @@
     status_t commit();
 
     // release hardware resources and blank screen
-    status_t release() const;
+    status_t release(int disp) const;
 
     // acquire hardware resources and unblank screen
-    status_t acquire() const;
+    status_t acquire(int disp) const;
 
     // create a work list for numLayers layer. sets HWC_GEOMETRY_CHANGED.
     status_t createWorkList(int32_t id, size_t numLayers);