ethernet: use net core MTU range checking in more drivers

[mirror_ubuntu-zesty-kernel.git] / drivers / net / ethernet / qualcomm / emac / emac.c

diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c
index 9bf3b2b82e9532e2662727a31d0846447ee64b39..e4e1925d18a48475a8dbaa4bc37bc2eafa65d4a8 100644 (file)
--- a/drivers/net/ethernet/qualcomm/emac/emac.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac.c
@@ -239,15 +239,8 @@ static void emac_rx_mode_set(struct net_device *netdev)
 /* Change the Maximum Transfer Unit (MTU) */
 static int emac_change_mtu(struct net_device *netdev, int new_mtu)
 {
-       unsigned int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
        struct emac_adapter *adpt = netdev_priv(netdev);
 
-       if ((max_frame < EMAC_MIN_ETH_FRAME_SIZE) ||
-           (max_frame > EMAC_MAX_ETH_FRAME_SIZE)) {
-               netdev_err(adpt->netdev, "error: invalid MTU setting\n");
-               return -EINVAL;
-       }
-
        netif_info(adpt, hw, adpt->netdev,
                   "changing MTU from %d to %d\n", netdev->mtu,
                   new_mtu);
@@ -679,6 +672,12 @@ static int emac_probe(struct platform_device *pdev)
        netdev->vlan_features |= NETIF_F_SG | NETIF_F_HW_CSUM |
                                 NETIF_F_TSO | NETIF_F_TSO6;
 
+       /* MTU range: 46 - 9194 */
+       netdev->min_mtu = EMAC_MIN_ETH_FRAME_SIZE -
+                         (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+       netdev->max_mtu = EMAC_MAX_ETH_FRAME_SIZE -
+                         (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+
        INIT_WORK(&adpt->work_thread, emac_work_thread);
 
        /* Initialize queues */