netdev - [net-next 13/17] net/mlx5: Remove unnecessary spin lock protection

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Date:   Wed, 26 May 2021 21:36:05 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Tariq Toukan <tariqt@...dia.com>,
        Eli Cohen <elic@...dia.com>, Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 13/17] net/mlx5: Remove unnecessary spin lock protection

From: Eli Cohen <elic@...dia.com>

Taking lag_lock to access ldev->tracker is meaningless in the context of
do_bond() and mlx5_lag_netdev_event().

Signed-off-by: Eli Cohen <elic@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/lag.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
index b8748390335f..c9c00163d918 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
@@ -280,9 +280,7 @@ static void mlx5_do_bond(struct mlx5_lag *ldev)
 	if (!mlx5_lag_is_ready(ldev))
 		return;
 
-	spin_lock(&lag_lock);
 	tracker = ldev->tracker;
-	spin_unlock(&lag_lock);
 
 	do_bond = tracker.is_bonded && mlx5_lag_check_prereq(ldev);
 
@@ -481,9 +479,7 @@ static int mlx5_lag_netdev_event(struct notifier_block *this,
 		break;
 	}
 
-	spin_lock(&lag_lock);
 	ldev->tracker = tracker;
-	spin_unlock(&lag_lock);
 
 	if (changed)
 		mlx5_queue_bond_work(ldev, 0);
-- 
2.31.1