[PATCH 5.4 092/158] net/mlx5: E-Switch, Fail mlx5_esw_modify_vport_rate if qos disabled

[Greg Kroah-Hartman]

From: Eli Cohen <elic@xxxxxxxxxx>

[ Upstream commit 5b8631c7b21ca8bc039f0bc030048973b039e0d2 ]

Avoid calling mlx5_esw_modify_vport_rate() if qos is not enabled and
avoid unnecessary syndrome messages from firmware.

Fixes: fcb64c0f5640 ("net/mlx5: E-Switch, add ingress rate support")
Signed-off-by: Eli Cohen <elic@xxxxxxxxxx>
Reviewed-by: Roi Dayan <roid@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index d2d407ebe6872..009d383d83f4b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1592,6 +1592,10 @@ int mlx5_esw_modify_vport_rate(struct mlx5_eswitch *esw, u16 vport_num,
 	struct mlx5_vport *vport;
 
 	vport = mlx5_eswitch_get_vport(esw, vport_num);
+
+	if (!vport->qos.enabled)
+		return -EOPNOTSUPP;
+
 	MLX5_SET(scheduling_context, ctx, max_average_bw, rate_mbps);
 
 	return mlx5_modify_scheduling_element_cmd(esw->dev,
-- 
2.27.0