netdev - [PATCH net 2/2] mlxsw: minimal: Initialize base

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Date:   Tue, 12 Mar 2019 08:40:42 +0000
From:   Ido Schimmel <idosch@...lanox.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     "davem@...emloft.net" <davem@...emloft.net>,
        Jiri Pirko <jiri@...lanox.com>, mlxsw <mlxsw@...lanox.com>,
        Vadim Pasternak <vadimp@...lanox.com>,
        Ido Schimmel <idosch@...lanox.com>
Subject: [PATCH net 2/2] mlxsw: minimal: Initialize base_mac

From: Jiri Pirko <jiri@...lanox.com>

Currently base_mac is not initialized which causes wrong reporting of
zeroed parent_id to userspace. Fix this by initializing base_mac
properly.

Fixes: c100e47caa8e ("mlxsw: minimal: Add ethtool support")
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
Signed-off-by: Ido Schimmel <idosch@...lanox.com>
---
 drivers/net/ethernet/mellanox/mlxsw/minimal.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
index 68bee9572a1b..00c390024350 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
@@ -34,6 +34,18 @@ struct mlxsw_m_port {
 	u8 module;
 };
 
+static int mlxsw_m_base_mac_get(struct mlxsw_m *mlxsw_m)
+{
+	char spad_pl[MLXSW_REG_SPAD_LEN] = {0};
+	int err;
+
+	err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(spad), spad_pl);
+	if (err)
+		return err;
+	mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_m->base_mac);
+	return 0;
+}
+
 static int mlxsw_m_port_dummy_open_stop(struct net_device *dev)
 {
 	return 0;
@@ -314,6 +326,12 @@ static int mlxsw_m_init(struct mlxsw_core *mlxsw_core,
 	mlxsw_m->core = mlxsw_core;
 	mlxsw_m->bus_info = mlxsw_bus_info;
 
+	err = mlxsw_m_base_mac_get(mlxsw_m);
+	if (err) {
+		dev_err(mlxsw_m->bus_info->dev, "Failed to get base mac\n");
+		return err;
+	}
+
 	err = mlxsw_m_ports_create(mlxsw_m);
 	if (err) {
 		dev_err(mlxsw_m->bus_info->dev, "Failed to create ports\n");
-- 
2.20.1