netdev - [PATCH 12/13] bnx2x: Don't report link down if has been already down

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Message-ID: <1271602271.27235.203.camel@lb-tlvb-vladz>
Date:	Sun, 18 Apr 2010 17:51:11 +0300
From:	"Vladislav Zolotarov" <vladz@...adcom.com>
To:	"Dave Miller" <davem@...emloft.net>
cc:	"Eilon Greenstein" <eilong@...adcom.com>,
	"netdev list" <netdev@...r.kernel.org>, yanivr@...adcom.com
Subject: [PATCH 12/13] bnx2x: Don't report link down if has been already
 down

Don't report link down if has been already down.

Author: Yaniv Rosner <yanivr@...adcom.com>
Signed-off-by: Yaniv Rosner <yanivr@...adcom.com>
Signed-off-by: Vladislav Zolotarov <vladz@...adcom.com>
Signed-off-by: Eilon Greenstein <eilong@...adcom.com>
---
 drivers/net/bnx2x_main.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index ab9a9eb..c4aac38 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -2469,6 +2469,7 @@ static void bnx2x_init_vn_minmax(struct bnx2x *bp, int func)
 /* This function is called upon link interrupt */
 static void bnx2x_link_attn(struct bnx2x *bp)
 {
+	u32 prev_link_status = bp->link_vars.link_status;
 	/* Make sure that we are synced with the current statistics */
 	bnx2x_stats_handle(bp, STATS_EVENT_STOP);
 
@@ -2501,8 +2502,9 @@ static void bnx2x_link_attn(struct bnx2x *bp)
 			bnx2x_stats_handle(bp, STATS_EVENT_LINK_UP);
 	}
 
-	/* indicate link status */
-	bnx2x_link_report(bp);
+	/* indicate link status only if link status actually changed */
+	if (prev_link_status != bp->link_vars.link_status)
+		bnx2x_link_report(bp);
 
 	if (IS_E1HMF(bp)) {
 		int port = BP_PORT(bp);
-- 
1.6.3.3




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