[PATCH 2.6.13-rc1 17/17] bonding: Optimization to read MII only when link status has changed.

[Radheka Godse <radheka.godse@xxxxxxxxx>]

Enhanced bond_mii_monitor fn: to read MII only when link status has 
changed for an enslaved adapter.

Signed-off-by: Radheka Godse <radheka.godse@xxxxxxxxx>

diff -urN -X dontdiff linux-2.6.12post/drivers/net/bonding/bond_main.c 
linux-2.6.12post-sysfs/drivers/net/bonding/bond_main.c
--- linux-2.6.12post/drivers/net/bonding/bond_main.c    2005-06-28 
18:18:03.000000000 -0700
+++ linux-2.6.12post-sysfs/drivers/net/bonding/bond_main.c      2005-06-30 
13:53:55.000000000 -0700
@@ -2652,6 +2652,7 @@
                                        if (slave == oldcurrent) {
                                                do_failover = 1;
                                        }
+                                       bond_update_speed_duplex(slave);
                                } else {
                                        slave->delay--;
                                }
@@ -2742,6 +2675,7 @@
                                } else {
                                        slave->delay--;
                                }
+                               bond_update_speed_duplex(slave);
                        }
                        break;
                default:
@@ -2754,8 +2675,6 @@
                        goto out;
                } /* end of switch (slave->link) */

-               bond_update_speed_duplex(slave);
-
                if (bond->params.mode == BOND_MODE_8023AD) {
                        if (old_speed != slave->speed) {
                                bond_3ad_adapter_speed_changed(slave);
~