From d3feed5c4c81d445e94b3ba8934583310b77bd98 Mon Sep 17 00:00:00 2001
From: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Date: Thu, 23 Jan 2014 17:55:38 +0200
Subject: [PATCH] dahdi_span_types: hush warning of missing attribute

Don't warn when a sysfs attribute does not exist.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
Acked-By: Russ Meyerriecks <rmeyerriecks@digium.com>
---
 dahdi_span_types | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dahdi_span_types b/dahdi_span_types
index 38dc347..85204d8 100755
--- a/dahdi_span_types
+++ b/dahdi_span_types
@@ -166,7 +166,7 @@ fi
 
 # Beware of special characters in attributes
 attr_clean() {
-	cat "$1" | tr -d '\n' | tr '!' '/' | tr -c 'a-zA-Z0-9/:.-' '_'
+	cat "$1" 2>/dev/null | tr -d '\n' | tr '!' '/' | tr -c 'a-zA-Z0-9/:.-' '_'
 }
 
 show_spantypes() {