From 2fe35d578d3d1b155b3feb4b06546230ff282df2 Mon Sep 17 00:00:00 2001
From: YumeMichi <do4suki@gmail.com>
Date: Fri, 12 Jan 2018 11:23:47 +0800
Subject: [PATCH] Check fm before using it

* Prevent NPE on devices without fingerprint.
---
 src/main/java/com/topjohnwu/magisk/utils/FingerprintHelper.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/com/topjohnwu/magisk/utils/FingerprintHelper.java b/src/main/java/com/topjohnwu/magisk/utils/FingerprintHelper.java
index e556489af..f9a961f7e 100644
--- a/src/main/java/com/topjohnwu/magisk/utils/FingerprintHelper.java
+++ b/src/main/java/com/topjohnwu/magisk/utils/FingerprintHelper.java
@@ -30,7 +30,7 @@ public abstract class FingerprintHelper extends FingerprintManager.Authenticatio
         MagiskManager mm = MagiskManager.get();
         KeyguardManager km = mm.getSystemService(KeyguardManager.class);
         FingerprintManager fm = mm.getSystemService(FingerprintManager.class);
-        return km.isKeyguardSecure() && fm.isHardwareDetected() && fm.hasEnrolledFingerprints();
+        return km.isKeyguardSecure() && fm != null && fm.isHardwareDetected() && fm.hasEnrolledFingerprints();
     }
 
     protected FingerprintHelper() throws Exception {