diff -up linux-2.4/drivers/net/e1000/e1000_ethtool.c linux-2.4/drivers/net/e1000.new/e1000_ethtool.c
--- linux-2.4/drivers/net/e1000/e1000_ethtool.c 2004-10-07 09:11:14.000000000 -0700
+++ linux-2.4/drivers/net/e1000.new/e1000_ethtool.c 2004-10-07 09:11:17.000000000 -0700
@@ -593,6 +593,9 @@ e1000_set_ringparam(struct net_device *n
tx_old = adapter->tx_ring;
rx_old = adapter->rx_ring;
+ if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
+ return -EINVAL;
+
if(netif_running(adapter->netdev))
e1000_down(adapter);