From 7ae91b41a64416a0370676b6cc6ce9a25a82f82b Mon Sep 17 00:00:00 2001
From: Matt Pietal <mpietal@google.com>
Date: Thu, 8 Apr 2021 10:10:35 -0400
Subject: [PATCH] DejankUtils fix for wrong thread init

If the very first call to DejankUtils happens to be on a binder
thread, DejankUtils will fail to initialize b/c it needs a main thread
looper to be available.

Fixes: 184642387
Test: SystemAppCheck
Change-Id: Ie8ed7cf3610902bbb41cf9640d506a404722c75b
---
 .../com/android/keyguard/KeyguardUpdateMonitor.java    | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java b/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
index 2219cf4274983..bfe6477b712de 100644
--- a/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
+++ b/packages/SystemUI/src/com/android/keyguard/KeyguardUpdateMonitor.java
@@ -359,10 +359,12 @@ public class KeyguardUpdateMonitor implements TrustManager.TrustListener, Dumpab
                 @Override
                 public void onChanged(BiometricSourceType type, boolean enabled, int userId)
                         throws RemoteException {
-                    if (type == BiometricSourceType.FACE) {
-                        mFaceSettingEnabledForUser.put(userId, enabled);
-                        updateFaceListeningState();
-                    }
+                    mHandler.post(() -> {
+                        if (type == BiometricSourceType.FACE) {
+                            mFaceSettingEnabledForUser.put(userId, enabled);
+                            updateFaceListeningState();
+                        }
+                    });
                 }
             };