bnx2x: Fix the race on bp->stats_pending.

Fix the race on bp->stats_pending between the timer and a LINK_UP event
handler.

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>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/bnx2x/bnx2x_stats.c b/drivers/net/bnx2x/bnx2x_stats.c
index 6e4d9b144cc..bda60d590fa 100644
--- a/drivers/net/bnx2x/bnx2x_stats.c
+++ b/drivers/net/bnx2x/bnx2x_stats.c
@@ -158,6 +158,11 @@ static void bnx2x_storm_stats_post(struct bnx2x *bp)
 
                 spin_lock_bh(&bp->stats_lock);
 
+                if (bp->stats_pending) {
+                        spin_unlock_bh(&bp->stats_lock);
+                        return;
+                }
+
                 ramrod_data.drv_counter = bp->stats_counter++;
                 ramrod_data.collect_port = bp->port.pmf ? 1 : 0;
                 for_each_eth_queue(bp, i)