From: Michal Schmidt <mschmidt@redhat.com>
Date: Fri, 3 Sep 2010 16:44:59 -0400
Subject: [net] bnx2x: small fix in stats handling
Message-id: <20100903164459.25415.97763.stgit@brian.englab.brq.redhat.com>
Patchwork-id: 28119
O-Subject: [RHEL5.6 BZ572012 PATCH 45/46] bnx2x: small fix in stats handling
Bugzilla: 572012
RH-Acked-by: David S. Miller <davem@redhat.com>
RH-Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>

Use a private variable to fold rx_dropped value, instead of shared
destination buffer, as it might break SNMP applications.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Eilon Greenstein <eilong@broadcom.com>
CC: Dmitry Kravkov <dmitry@broadcom.com>
Acked-By: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit c6a056a349d10a6e879ca1be6067873b6feed259)

Conflicts:

	drivers/net/bnx2x/bnx2x_stats.c

diff --git a/drivers/net/bnx2x/bnx2x_stats.c b/drivers/net/bnx2x/bnx2x_stats.c
index 3aafde2..2b099d3 100644
--- a/drivers/net/bnx2x/bnx2x_stats.c
+++ b/drivers/net/bnx2x/bnx2x_stats.c
@@ -960,6 +960,7 @@ static void bnx2x_net_stats_update(struct bnx2x *bp)
 {
 	struct bnx2x_eth_stats *estats = &bp->eth_stats;
 	struct net_device_stats *nstats = &bp->net_stats;
+	unsigned long tmp;
 	int i;
 
 	nstats->rx_packets =
@@ -976,10 +977,10 @@ static void bnx2x_net_stats_update(struct bnx2x *bp)
 
 	nstats->tx_bytes = bnx2x_hilo(&estats->total_bytes_transmitted_hi);
 
-	nstats->rx_dropped = estats->mac_discard;
+	tmp = estats->mac_discard;
 	for_each_queue(bp, i)
-		nstats->rx_dropped +=
-			le32_to_cpu(bp->fp[i].old_tclient.checksum_discard);
+		tmp += le32_to_cpu(bp->fp[i].old_tclient.checksum_discard);
+	nstats->rx_dropped = tmp;
 
 	nstats->tx_dropped = 0;