--- zzzz-none-000/linux-4.9.279/drivers/net/ethernet/qualcomm/emac/emac.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/drivers/net/ethernet/qualcomm/emac/emac.c	2023-02-08 11:43:42.000000000 +0000
@@ -239,15 +239,8 @@
 /* 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);
@@ -691,6 +684,12 @@
 	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 */