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net/mlx4_core: Avoid setting ports to auto when only one port type is supported

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When only one port type is supported, it should be read only.
We reject changing requests, even to the auto sense mode.

Fixes: 27bf91d6a0 ("mlx4_core: Add link type autosensing")
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maor Gottlieb 2016-10-27 16:27:14 +03:00 committed by David S. Miller
parent aa0c08feae
commit 33a1f8b196
1 changed files with 9 additions and 1 deletions
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10
drivers/net/ethernet/mellanox/mlx4/main.c
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@ -1102,6 +1102,14 @@ static int __set_port_type(struct mlx4_port_info *info,
int i;
int err = 0;
if ((port_type & mdev->caps.supported_type[info->port]) != port_type) {
mlx4_err(mdev,
"Requested port type for port %d is not supported on this HCA\n",
info->port);
err = -EINVAL;
goto err_sup;
}
mlx4_stop_sense(mdev);
mutex_lock(&priv->port_mutex);
info->tmp_type = port_type;
@ -1147,7 +1155,7 @@ static int __set_port_type(struct mlx4_port_info *info,
out:
mlx4_start_sense(mdev);
mutex_unlock(&priv->port_mutex);
err_sup:
return err;
}