net/mlx4_en: Run loopback test only when port is up

Loopback can't work when port is down.

Signed-off-by: Eugenia Emantayev <[email protected]>
Signed-off-by: Amir Vadai <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_selftest.c b/drivers/net/ethernet/mellanox/mlx4/en_selftest.c
index 03e5f6ac67e7660dbc68c6fe69e5123247588bf0..49d5afc7cfb84cfcd413b73d6e7ff9b938802256 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_selftest.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_selftest.c
@@ -159,7 +159,8 @@ void mlx4_en_ex_selftest(struct net_device *dev, u32 *flags, u64 *buf)
                if (priv->mdev->dev->caps.flags &
                                        MLX4_DEV_CAP_FLAG_UC_LOOPBACK) {
                        buf[3] = mlx4_en_test_registers(priv);
-                       buf[4] = mlx4_en_test_loopback(priv);
+                       if (priv->port_up)
+                               buf[4] = mlx4_en_test_loopback(priv);
                }
 
                if (carrier_ok)