[PATCH net-next] amd-xgbe: Update connection validation for backplane mode

[Tom Lendacky]

Update the connection type enumeration for backplane mode and return
an error when there is a mismatch between the mode and the connection
type.

Signed-off-by: Tom Lendacky <thomas.lenda...@amd.com>
---
 drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c 
b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
index 348cc8c..9d8c9530 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
@@ -164,6 +164,7 @@ enum xgbe_conn_type {
        XGBE_CONN_TYPE_NONE = 0,
        XGBE_CONN_TYPE_SFP,
        XGBE_CONN_TYPE_MDIO,
+       XGBE_CONN_TYPE_RSVD1,
        XGBE_CONN_TYPE_BACKPLANE,
        XGBE_CONN_TYPE_MAX,
 };
@@ -2831,6 +2832,7 @@ static int xgbe_phy_init(struct xgbe_prv_data *pdata)
        if (xgbe_phy_conn_type_mismatch(pdata)) {
                dev_err(pdata->dev, "phy mode/connection mismatch (%#x/%#x)\n",
                        phy_data->port_mode, phy_data->conn_type);
+               return -EINVAL;
        }
 
        /* Validate the mode requested */