1 files changed, 3 insertions, 0 deletions
diff --git a/services/java/com/android/server/power/PowerManagerService.java b/services/java/com/android/server/power/PowerManagerService.java
index da9548f..134718b 100644
--- a/services/java/com/android/server/power/PowerManagerService.java
+++ b/services/java/com/android/server/power/PowerManagerService.java
@@ -1135,6 +1135,9 @@ public final class PowerManagerService extends IPowerManager.Stub
         if (!mSystemReady || mDirty == 0) {
             return;
         }
+        if (!Thread.holdsLock(mLock)) {
+            Slog.wtf(TAG, "Power manager lock was not held when calling updatePowerStateLocked");
+        }
 
         // Phase 0: Basic state updates.
         updateIsPoweredLocked(mDirty);