1 files changed, 9 insertions, 8 deletions

diff --git a/drivers/net/igb/e1000_mac.c b/drivers/net/igb/e1000_mac.c
index 986aa902f7ed..4969a5b1cf3c 100644
--- a/drivers/net/igb/e1000_mac.c
+++ b/drivers/net/igb/e1000_mac.c
@@ -185,13 +185,12 @@ s32 igb_check_alt_mac_addr(struct e1000_hw *hw)
         }
 
         if (nvm_alt_mac_addr_offset == 0xFFFF) {
-                ret_val = -(E1000_NOT_IMPLEMENTED);
+                /* There is no Alternate MAC Address */
                 goto out;
         }
 
         if (hw->bus.func == E1000_FUNC_1)
-                nvm_alt_mac_addr_offset += ETH_ALEN/sizeof(u16);
-
+                nvm_alt_mac_addr_offset += E1000_ALT_MAC_ADDRESS_OFFSET_LAN1;
         for (i = 0; i < ETH_ALEN; i += 2) {
                 offset = nvm_alt_mac_addr_offset + (i >> 1);
                 ret_val = hw->nvm.ops.read(hw, offset, 1, &nvm_data);
@@ -206,14 +205,16 @@ s32 igb_check_alt_mac_addr(struct e1000_hw *hw)
 
         /* if multicast bit is set, the alternate address will not be used */
         if (alt_mac_addr[0] & 0x01) {
-                ret_val = -(E1000_NOT_IMPLEMENTED);
+                hw_dbg("Ignoring Alternate Mac Address with MC bit set\n");
                 goto out;
         }
 
-        for (i = 0; i < ETH_ALEN; i++)
-                hw->mac.addr[i] = hw->mac.perm_addr[i] = alt_mac_addr[i];
-
-        hw->mac.ops.rar_set(hw, hw->mac.perm_addr, 0);
+        /*
+         * We have a valid alternate MAC address, and we want to treat it the
+         * same as the normal permanent MAC address stored by the HW into the
+         * RAR. Do this by mapping this address into RAR0.
+         */
+        hw->mac.ops.rar_set(hw, alt_mac_addr, 0);
 
 out:
         return ret_val;