From bbd47bd460569df7d0010d72ad0ae6392fdc2445 Mon Sep 17 00:00:00 2001
From: "edgar.huang" <edgar.huang@spreadtrum.com>
Date: Wed, 13 Sep 2017 11:04:01 +0800
Subject: [PATCH] Don't need to authenticate fingerprint when the fingerprint
 list is empty.

Enter into the fingerprint list screen and can authenticate fingerprint still when the list is empty.
Test: manual - enrolling some fingerprints and remove all fingerprintd, touch the fingerprint touch panel and no response.
---
 src/com/android/settings/fingerprint/FingerprintSettings.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/com/android/settings/fingerprint/FingerprintSettings.java b/src/com/android/settings/fingerprint/FingerprintSettings.java
index 607d28cdd72..d717bff1aaf 100644
--- a/src/com/android/settings/fingerprint/FingerprintSettings.java
+++ b/src/com/android/settings/fingerprint/FingerprintSettings.java
@@ -275,7 +275,8 @@ public class FingerprintSettings extends SubSettings {
         }
 
         private void retryFingerprint() {
-            if (mRemovalSidecar.inProgress()) {
+            if (mRemovalSidecar.inProgress()
+                    || 0 == mFingerprintManager.getEnrolledFingerprints(mUserId).size()) {
                 return;
             }
             if (!mInFingerprintLockout) {