From 87ba8699cbf7cc23a94de9b5906c43b5f322ea92 Mon Sep 17 00:00:00 2001
From: John McCutchan <john@johnmccutchan.com>
Date: Mon, 10 Oct 2016 15:25:01 -0700
Subject: [PATCH] Don't try to update the cache if locking is disabled (#6258)

---
 packages/flutter_tools/lib/src/cache.dart | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packages/flutter_tools/lib/src/cache.dart b/packages/flutter_tools/lib/src/cache.dart
index 17a46f95513..e69bf2e74d7 100644
--- a/packages/flutter_tools/lib/src/cache.dart
+++ b/packages/flutter_tools/lib/src/cache.dart
@@ -175,6 +175,8 @@ class Cache {
   }
 
   Future<Null> updateAll() async {
+    if (!_lockEnabled)
+      return null;
     MaterialFonts materialFonts = new MaterialFonts(cache);
     if (!materialFonts.isUpToDate())
       await materialFonts.download();