From: Ido Schimmel <ido...@mellanox.com>

[ Upstream commit c0e01eac7ada785fdeaea1ae5476ec1cf3b00374 ]

In case we got an FDB notification for a port that doesn't exist we
execute an FDB entry delete to prevent it from re-appearing the next
time we poll for notifications.

If the operation failed we would trigger a NULL pointer dereference as
'mlxsw_sp_port' is NULL.

Fix it by reporting the error using the underlying bus device instead.

Fixes: 12f1501e7511 ("mlxsw: spectrum: remove FDB entry in case we get unknown 
object notification")
Signed-off-by: Ido Schimmel <ido...@mellanox.com>
Signed-off-by: Jiri Pirko <j...@mellanox.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index bea9ae31a769..60e1edcbe573 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -1448,8 +1448,7 @@ static void mlxsw_sp_fdb_notify_mac_process(struct 
mlxsw_sp *mlxsw_sp,
        err = mlxsw_sp_port_fdb_uc_op(mlxsw_sp, local_port, mac, fid,
                                      adding, true);
        if (err) {
-               if (net_ratelimit())
-                       netdev_err(mlxsw_sp_port->dev, "Failed to set FDB 
entry\n");
+               dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB 
entry\n");
                return;
        }
 
@@ -1509,8 +1508,7 @@ static void mlxsw_sp_fdb_notify_mac_lag_process(struct 
mlxsw_sp *mlxsw_sp,
        err = mlxsw_sp_port_fdb_uc_lag_op(mlxsw_sp, lag_id, mac, fid, lag_vid,
                                          adding, true);
        if (err) {
-               if (net_ratelimit())
-                       netdev_err(mlxsw_sp_port->dev, "Failed to set FDB 
entry\n");
+               dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to set FDB 
entry\n");
                return;
        }
 
-- 
2.14.1

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