qlcnic: Fix setting MAC address

o Delete previous unicast MAC which is already programmed
  in adapter before setting new unicast MAC

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index 264d5a4f8153..04037b5d4d8f 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -308,6 +308,23 @@ int qlcnic_read_mac_addr(struct qlcnic_adapter *adapter)
         return 0;
 }
 
+static void qlcnic_delete_adapter_mac(struct qlcnic_adapter *adapter)
+{
+        struct qlcnic_mac_list_s *cur;
+        struct list_head *head;
+
+        list_for_each(head, &adapter->mac_list) {
+                cur = list_entry(head, struct qlcnic_mac_list_s, list);
+                if (!memcmp(adapter->mac_addr, cur->mac_addr, ETH_ALEN)) {
+                        qlcnic_sre_macaddr_change(adapter, cur->mac_addr,
+                                                  0, QLCNIC_MAC_DEL);
+                        list_del(&cur->list);
+                        kfree(cur);
+                        return;
+                }
+        }
+}
+
 static int qlcnic_set_mac(struct net_device *netdev, void *p)
 {
         struct qlcnic_adapter *adapter = netdev_priv(netdev);
@@ -322,11 +339,15 @@ static int qlcnic_set_mac(struct net_device *netdev, void *p)
         if (!is_valid_ether_addr(addr->sa_data))
                 return -EINVAL;
 
+        if (!memcmp(adapter->mac_addr, addr->sa_data, ETH_ALEN))
+                return 0;
+
         if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
                 netif_device_detach(netdev);
                 qlcnic_napi_disable(adapter);
         }
 
+        qlcnic_delete_adapter_mac(adapter);
         memcpy(adapter->mac_addr, addr->sa_data, netdev->addr_len);
         memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
         qlcnic_set_multi(adapter->netdev);