From 5df972afb615beef2123a19aeca58e473e3d4e95 Mon Sep 17 00:00:00 2001
From: jhb <jhb@FreeBSD.org>
Date: Mon, 28 Jan 2013 19:38:13 +0000
Subject: Mark 'ticks', 'time_second', and 'time_uptime' as volatile to prevent
 the compiler from caching their values in tight loops.

Reviewed by:	bde
MFC after:	1 week
---
 sys/pci/ncr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'sys/pci/ncr.c')

diff --git a/sys/pci/ncr.c b/sys/pci/ncr.c
index 793ae80..ead7d43 100644
--- a/sys/pci/ncr.c
+++ b/sys/pci/ncr.c
@@ -1386,7 +1386,7 @@ static char *ncr_name (ncb_p np)
  * Kernel variables referenced in the scripts.
  * THESE MUST ALL BE ALIGNED TO A 4-BYTE BOUNDARY.
  */
-static void *script_kvars[] =
+static volatile void *script_kvars[] =
 	{ &time_second, &ticks, &ncr_cache };
 
 static	struct script script0 = {
-- 
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