From 642d7f5ae5b76a1ec6febd8529d68c70833f3fc6 Mon Sep 17 00:00:00 2001
From: rudolfkoenig <>
Date: Sun, 8 Feb 2015 16:47:01 +0000
Subject: [PATCH] DevIo.pm: avoid endless loop in TimeoutRead (Forum #33506)

git-svn-id: https://svn.fhem.de/fhem/trunk@7918 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/DevIo.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fhem/FHEM/DevIo.pm b/fhem/FHEM/DevIo.pm
index 3b17ea4b9..886857707 100644
--- a/fhem/FHEM/DevIo.pm
+++ b/fhem/FHEM/DevIo.pm
@@ -95,7 +95,7 @@ DevIo_TimeoutRead($$)
     my $nfound = select($rin, undef, undef, $timeout);
     last if($nfound <= 0);
     my $r = DevIo_DoSimpleRead($hash);
-    last if(!defined($r));
+    last if(!defined($r) || $r == "");
     $answer .= $r;
   }
   return $answer;