netdev - [PATCH] mlx5: don't write directly to netdev->dev

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Date:   Wed, 13 Oct 2021 13:20:01 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     saeedm@...dia.com
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH] mlx5: don't write directly to netdev->dev_addr

Use a local buffer and eth_hw_addr_set().

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
This takes care of Ethernet, mlx5/core/ipoib/ipoib.c
will be changed as part of all the IB conversions.
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index e81e5505207c..430c9e967f5d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4385,12 +4385,15 @@ void mlx5e_build_nic_params(struct mlx5e_priv *priv, struct mlx5e_xsk *xsk, u16
 static void mlx5e_set_netdev_dev_addr(struct net_device *netdev)
 {
 	struct mlx5e_priv *priv = netdev_priv(netdev);
+	u8 addr[ETH_ALEN];
 
-	mlx5_query_mac_address(priv->mdev, netdev->dev_addr);
-	if (is_zero_ether_addr(netdev->dev_addr) &&
+	mlx5_query_mac_address(priv->mdev, addr);
+	if (is_zero_ether_addr(addr) &&
 	    !MLX5_CAP_GEN(priv->mdev, vport_group_manager)) {
 		eth_hw_addr_random(netdev);
 		mlx5_core_info(priv->mdev, "Assigned random MAC address %pM\n", netdev->dev_addr);
+	} else {
+		eth_hw_addr_set(netdev, addr);
 	}
 }
 
-- 
2.31.1