net/mlx5: E-Switch, return error if encap isn't supported

On regular ConnectX HCAs getting encap mode isn't supported when the
E-Switch is in NONE mode. Current code would return no error code when
trying to get encap mode in such case which is wrong.

Fix by returning error value to indicate failure to caller in such case.

Fixes: 9a3c510e04b3 ("net/mlx5: E-switch, Protect eswitch mode changes")
Signed-off-by: Raed Salem <raeds@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 80fa76f60e1e63c75a27062e4480a752561ffbeb..a46455694f7ae79eec21c461f9668ff39401f540 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -3623,7 +3623,7 @@ int mlx5_devlink_eswitch_encap_mode_get(struct devlink *devlink,
        *encap = esw->offloads.encap;
 unlock:
        up_write(&esw->mode_lock);
-       return 0;
+       return err;
 }
 
 static bool