From 573a0f169a6f9af36d29b475fc772f5a7de27dfd Mon Sep 17 00:00:00 2001
From: sletz <sletz@0c269be4-1314-0410-8aa9-9f06e86f4224>
Date: Sat, 2 May 2009 12:01:38 +0000
Subject: [PATCH] JACK1 r3522 backported.

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@3525 0c269be4-1314-0410-8aa9-9f06e86f4224
---
 linux/JackLinuxTime.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/linux/JackLinuxTime.c b/linux/JackLinuxTime.c
index 6c1a91fa..9679da6d 100644
--- a/linux/JackLinuxTime.c
+++ b/linux/JackLinuxTime.c
@@ -73,7 +73,7 @@ static int jack_hpet_init ()
 
 	hpet_ptr = (unsigned char *) mmap(NULL, HPET_MMAP_SIZE,
 					  PROT_READ, MAP_SHARED, hpet_fd, 0);
-	if (hpet_ptr == NULL) {
+	if (hpet_ptr == MAP_FAILED) {
 		jack_error ("This system has no mappable HPET device (%s)", strerror (errno));
 		close (hpet_fd);
 		return -1;