[Patch 6/16 2.5] ixgb: fix error in setting Frame Size register while changing mtu

[Ganesh Venkatesan <ganesh.venkatesan@xxxxxxxxx>]

diff -up net-drivers-2.6/drivers/net/ixgb/ixgb_main.c 
net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c
--- net-drivers-2.6/drivers/net/ixgb/ixgb_main.c        2004-10-05 
15:50:18.000000000 -0700
+++ net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c    2004-10-05 
17:55:48.000000000 -0700
@@ -1437,8 +1437,8 @@ static struct net_device_stats *ixgb_get
 static int ixgb_change_mtu(struct net_device *netdev, int new_mtu)
 {
        struct ixgb_adapter *adapter = netdev->priv;
-       uint32_t old_mtu = adapter->rx_buffer_len;
        int max_frame = new_mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
+       int old_max_frame = netdev->mtu + ENET_HEADER_SIZE + ENET_FCS_LENGTH;
 
        if ((max_frame < IXGB_MIN_ENET_FRAME_SIZE_WITHOUT_FCS + ENET_FCS_LENGTH)
            || (max_frame > IXGB_MAX_JUMBO_FRAME_SIZE + ENET_FCS_LENGTH)) {
@@ -1463,7 +1477,7 @@ static int ixgb_change_mtu(struct net_de
 
        netdev->mtu = new_mtu;
 
-       if (old_mtu != adapter->rx_buffer_len && netif_running(netdev)) {
+       if(old_max_frame != max_frame && netif_running(netdev)) {
 
                ixgb_down(adapter, TRUE);
                ixgb_up(adapter);