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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Alaa Hleihel <alaa@mellanox.com>,
        Tariq Toukan <tariqt@mellanox.com>,
        Saeed Mahameed <saeedm@mellanox.com>
Subject: [PATCH 4.14 030/101] net/mlx5e: Remove the false indication of software timestamping support
Date:   Mon,  7 Jan 2019 13:32:18 +0100
Message-Id: <20190107105334.553774970@linuxfoundation.org>
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4.14-stable review patch.  If anyone has any objections, please let me know.

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

From: Alaa Hleihel <alaa@mellanox.com>

[ Upstream commit 4765420439e758bfa4808392d18b0a4cb6f06065 ]

mlx5 driver falsely advertises support of software timestamping.
Fix it by removing the false indication.

Fixes: ef9814deafd0 ("net/mlx5e: Add HW timestamping (TS) support")
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c |   12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -1417,21 +1417,15 @@ static int mlx5e_set_pauseparam(struct n
 int mlx5e_ethtool_get_ts_info(struct mlx5e_priv *priv,
 			      struct ethtool_ts_info *info)
 {
-	int ret;
-
-	ret = ethtool_op_get_ts_info(priv->netdev, info);
-	if (ret)
-		return ret;
-
 	info->phc_index = priv->tstamp.ptp ?
 			  ptp_clock_index(priv->tstamp.ptp) : -1;
 
 	if (!MLX5_CAP_GEN(priv->mdev, device_frequency_khz))
 		return 0;
 
-	info->so_timestamping |= SOF_TIMESTAMPING_TX_HARDWARE |
-				 SOF_TIMESTAMPING_RX_HARDWARE |
-				 SOF_TIMESTAMPING_RAW_HARDWARE;
+	info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
+				SOF_TIMESTAMPING_RX_HARDWARE |
+				SOF_TIMESTAMPING_RAW_HARDWARE;
 
 	info->tx_types = BIT(HWTSTAMP_TX_OFF) |
 			 BIT(HWTSTAMP_TX_ON);