net/mlx4_en: Fix the return value of mlx4_en_dcbnl_set_all()

mlx4_en_dcbnl_set_all() returns u8, so return value can't be negative in
case of failure.

Fixes: af7d51852631 ("net/mlx4_en: Add DCB PFC support through CEE netlink commands")
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Rana Shahout <ranas@mellanox.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
index 99c6bbdff50115cb4fcde86ffdc6dc4d35e43030..97081e5bafd1e927994a9a0b98e2d764770ff266 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c
@@ -158,10 +158,9 @@ static u8 mlx4_en_dcbnl_set_all(struct net_device *netdev)
        struct mlx4_en_priv *priv = netdev_priv(netdev);
        struct mlx4_en_dev *mdev = priv->mdev;
        struct mlx4_en_cee_config *dcb_cfg = &priv->cee_params.dcb_cfg;
-       int err = 0;
 
        if (!(priv->cee_params.dcbx_cap & DCB_CAP_DCBX_VER_CEE))
-               return -EINVAL;
+               return 1;
 
        if (dcb_cfg->pfc_state) {
                int tc;
@@ -199,15 +198,17 @@ static u8 mlx4_en_dcbnl_set_all(struct net_device *netdev)
                en_dbg(DRV, priv, "Set pfc off\n");
        }
 
-       err = mlx4_SET_PORT_general(mdev->dev, priv->port,
-                                   priv->rx_skb_size + ETH_FCS_LEN,
-                                   priv->prof->tx_pause,
-                                   priv->prof->tx_ppp,
-                                   priv->prof->rx_pause,
-                                   priv->prof->rx_ppp);
-       if (err)
+       if (mlx4_SET_PORT_general(mdev->dev, priv->port,
+                                 priv->rx_skb_size + ETH_FCS_LEN,
+                                 priv->prof->tx_pause,
+                                 priv->prof->tx_ppp,
+                                 priv->prof->rx_pause,
+                                 priv->prof->rx_ppp)) {
                en_err(priv, "Failed setting pause params\n");
-       return err;
+               return 1;
+       }
+
+       return 0;
 }
 
 static u8 mlx4_en_dcbnl_get_state(struct net_device *dev)