From e2f1839611ef373c02d34f6d0dd09c76611bf3db Mon Sep 17 00:00:00 2001
From: Shaun Ruffell <sruffell@digium.com>
Date: Fri, 1 May 2009 16:42:54 +0000
Subject: wcb4xxp: Define mmiowb if not already defined.

Linux kernel 2.6.9 does not define mmiowb. DAHDI-253

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6552 a0bf4364-ded3-4de4-8d8a-66a801d63aff
---
 drivers/dahdi/wcb4xxp/base.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/dahdi/wcb4xxp/base.c b/drivers/dahdi/wcb4xxp/base.c
index d07ce7c..f5db389 100644
--- a/drivers/dahdi/wcb4xxp/base.c
+++ b/drivers/dahdi/wcb4xxp/base.c
@@ -87,6 +87,10 @@ static int vpmsupport = 1;
 static int timer_1_ms = 2000;
 static int timer_3_ms = 30000;
 
+#if !defined(mmiowb)
+#define mmiowb() barrier()
+#endif
+
 #define MAX_B4_CARDS 64
 static struct b4xxp *cards[MAX_B4_CARDS];
 
-- 
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