[projects/geninitrd] do not write real-root-dev, if value to be written is 0

[glen]

commit c5ecb34222262b85f45d5cbbb4f9f71afe78be0c
Author: Elan Ruusamäe <glen at delfi.ee>
Date:   Wed May 14 00:08:09 2014 +0300

    do not write real-root-dev, if value to be written is 0

 geninitrd | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/geninitrd b/geninitrd
index ec7ebbb..8773697 100755
--- a/geninitrd
+++ b/geninitrd
@@ -859,7 +859,7 @@ initrd_gen_setrootdev() {
 			if [ -z "$rootnr" -a -e "$ROOT" ]; then
 				rootnr="$(busybox ls -lL ${ROOT} | busybox awk '{if (/^b/) { print 256 * $3 + $4; }}')"
 			fi
-			if [ -n "$rootnr" ]; then
+			if [ "$rootnr" -gt 0 ]; then
 				echo "$rootnr" > /proc/sys/kernel/real-root-dev
 			fi
 		fi
================================================================

---- gitweb:

http://git.pld-linux.org/gitweb.cgi/projects/geninitrd.git/commitdiff/c5ecb34222262b85f45d5cbbb4f9f71afe78be0c