netdev - [PATCH net] net/mlx5e: Cleanup MACsec uninitialization routine

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Message-Id: <b43b1c5aadd5cfdcd2e385ce32693220331700ba.1665645548.git.leonro@nvidia.com>
Date:   Thu, 13 Oct 2022 10:21:00 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Leon Romanovsky <leonro@...dia.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Emeel Hakim <ehakim@...dia.com>,
        Eric Dumazet <edumazet@...gle.com>, linux-rdma@...r.kernel.org,
        netdev@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>,
        Raed Salem <raeds@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Tariq Toukan <tariqt@...dia.com>
Subject: [PATCH net] net/mlx5e: Cleanup MACsec uninitialization routine

From: Leon Romanovsky <leonro@...dia.com>

The mlx5e_macsec_cleanup() routine has pointer dereferencing if mlx5 device
doesn't support MACsec (priv->macsec will be NULL) together with useless
comment line, assignment and extra blank lines.

Fix everything in one patch.

Fixes: 1f53da676439 ("net/mlx5e: Create advanced steering operation (ASO) object for MACsec")
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 .../net/ethernet/mellanox/mlx5/core/en_accel/macsec.c | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
index 41970067917b..4331235b21ee 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
@@ -1846,25 +1846,16 @@ int mlx5e_macsec_init(struct mlx5e_priv *priv)
 void mlx5e_macsec_cleanup(struct mlx5e_priv *priv)
 {
 	struct mlx5e_macsec *macsec = priv->macsec;
-	struct mlx5_core_dev *mdev = macsec->mdev;
+	struct mlx5_core_dev *mdev = priv->mdev;
 
 	if (!macsec)
 		return;
 
 	mlx5_notifier_unregister(mdev, &macsec->nb);
-
 	mlx5e_macsec_fs_cleanup(macsec->macsec_fs);
-
-	/* Cleanup workqueue */
 	destroy_workqueue(macsec->wq);
-
 	mlx5e_macsec_aso_cleanup(&macsec->aso, mdev);
-
-	priv->macsec = NULL;
-
 	rhashtable_destroy(&macsec->sci_hash);
-
 	mutex_destroy(&macsec->lock);
-
 	kfree(macsec);
 }
-- 
2.37.3