linux-kernel - [PATCH 3.16 405/410] net/mlx4_en: do not ignore autoneg in mlx4_en_set

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Message-ID: <lsq.1528380321.394576068@decadent.org.uk>
Date:   Thu, 07 Jun 2018 15:05:21 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Ivan Vecera" <ivecera@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        "Amir Vadai" <amirv@...lanox.com>
Subject: [PATCH 3.16 405/410] net/mlx4_en: do not ignore autoneg in
 mlx4_en_set_pauseparam()

3.16.57-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ivan Vecera <ivecera@...hat.com>

commit 278d436a476f69fc95d5c82bf61b6c2d02f4d44e upstream.

The driver does not support pause autonegotiation so it should return
-EINVAL when the function is called with non-zero autoneg.

Cc: Amir Vadai <amirv@...lanox.com>
Signed-off-by: Ivan Vecera <ivecera@...hat.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/net/ethernet/mellanox/mlx4/en_ethtool.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -476,6 +476,9 @@ static int mlx4_en_set_pauseparam(struct
 	struct mlx4_en_dev *mdev = priv->mdev;
 	int err;
 
+	if (pause->autoneg)
+		return -EINVAL;
+
 	priv->prof->tx_pause = pause->tx_pause != 0;
 	priv->prof->rx_pause = pause->rx_pause != 0;
 	err = mlx4_SET_PORT_general(mdev->dev, priv->port,