From 3f301fd4390fc798513b7bed872849936743227c Mon Sep 17 00:00:00 2001
From: Jan-Piet Mens <jpmens@gmail.com>
Date: Tue, 11 Jun 2013 07:08:55 +0200
Subject: [PATCH] Protect None value in setup module

---
 library/system/setup | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/library/system/setup b/library/system/setup
index 274fb469ee9..edc27d22205 100644
--- a/library/system/setup
+++ b/library/system/setup
@@ -619,9 +619,10 @@ class LinuxHardware(Hardware):
             d['rotational'] = get_file_content(sysdir + "/queue/rotational")
             d['scheduler_mode'] = ""
             scheduler = get_file_content(sysdir + "/queue/scheduler")
-            m = re.match(".*?(\[(.*)\])", scheduler)
-            if m:
-                d['scheduler_mode'] = m.group(2)
+            if scheduler is not None:
+                m = re.match(".*?(\[(.*)\])", scheduler)
+                if m:
+                    d['scheduler_mode'] = m.group(2)
 
             d['sectors'] = get_file_content(sysdir + "/size")
             if not d['sectors']: