Merge "Fix ANR due to long wait for synchronization lock"

am: 9193014ee6

Change-Id: Ic41c34a5701658aa328a83267ad3c818d55bd522

packages/SettingsLib/src/com/android/settingslib/bluetooth/LocalBluetoothAdapter.java

@@ -194,8 +194,13 @@ public class LocalBluetoothAdapter {
         return mState;
     }
 
-    synchronized void setBluetoothStateInt(int state) {
-        mState = state;
+    void setBluetoothStateInt(int state) {
+        synchronized(this) {
+            if (mState == state) {
+                return;
+            }
+            mState = state;
+        }
 
         if (state == BluetoothAdapter.STATE_ON) {
             // if mProfileManager hasn't been constructed yet, it will