From 26a8b9f1967d910033c516462c101100e041a9b4 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Mon, 8 Sep 2014 18:19:15 +0200
Subject: [PATCH] mdev: treat zero-length /dev/mdev.seq the same as "\n" one.
 Closes 7334

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 util-linux/mdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/util-linux/mdev.c b/util-linux/mdev.c
index e80b58f2e..b2d56575f 100644
--- a/util-linux/mdev.c
+++ b/util-linux/mdev.c
@@ -972,7 +972,7 @@ wait_for_seqfile(const char *seq)
 			break;
 		}
 		seqbuf[seqlen] = '\0';
-		if (seqbuf[0] == '\n') {
+		if (seqbuf[0] == '\n' || seqbuf[0] == '\0') {
 			/* seed file: write out seq ASAP */
 			xwrite_str(seq_fd, seq);
 			xlseek(seq_fd, 0, SEEK_SET);