From: Eilon Greenstein <eilong@broadcom.com>
Date: Wed, 12 Aug 2009 08:23:56 +0000 (+0000)
Subject: bnx2x: Missing smp_wmb for statistics state machine
X-Git-Tag: v2.6.32-rc1~703^2~391
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8924665a7d77bb79ee895b98864e3201507f6ef2;p=platform%2Fkernel%2Flinux-stable.git

bnx2x: Missing smp_wmb for statistics state machine

Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index edd7b13..1e8e7e1 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -4412,6 +4412,9 @@ static void bnx2x_stats_handle(struct bnx2x *bp, enum bnx2x_stats_event event)
 	bnx2x_stats_stm[state][event].action(bp);
 	bp->stats_state = bnx2x_stats_stm[state][event].next_state;
 
+	/* Make sure the state has been "changed" */
+	smp_wmb();
+
 	if ((event != STATS_EVENT_UPDATE) || (bp->msglevel & NETIF_MSG_TIMER))
 		DP(BNX2X_MSG_STATS, "state %d -> event %d -> state %d\n",
 		   state, event, bp->stats_state);