From c7c243669c324b6b2592d397153a258c86efed5c Mon Sep 17 00:00:00 2001
From: John Crispin <john@openwrt.org>
Date: Sun, 5 May 2013 12:41:42 +0000
Subject: [PATCH] sysupgrade: fixes broken pipe error during sysupgade

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 36548
---
 package/base-files/files/lib/upgrade/common.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
index fbe54a5ee5..6bb36db489 100644
--- a/package/base-files/files/lib/upgrade/common.sh
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -157,14 +157,14 @@ get_image() { # <source> [ <command> ]
 		*) cmd="cat";;
 	esac
 	if [ -z "$conc" ]; then
-		local magic="$(eval $cmd $from | dd bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x"')"
+		local magic="$(eval $cmd $from 2>/dev/null | dd bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x"')"
 		case "$magic" in
 			1f8b) conc="zcat";;
 			425a) conc="bzcat";;
 		esac
 	fi
 
-	eval "$cmd $from ${conc:+| $conc}"
+	eval "$cmd $from 2>/dev/null ${conc:+| $conc}"
 }
 
 get_magic_word() {