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igb: Fix for Alt MAC Address feature on 82580 and later devices

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In 82580 and later devices, the alternate MAC address feature is
completely handled by the option ROM and software does not handle
it anymore.  This patch changes the check_alt_mac_addr function to
exit immediately if device is 82580 or later.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Carolyn Wyborny 2011-10-13 17:28:39 +00:00 committed by Jeff Kirsher
parent 7d94eb84f3
commit 65189d284b
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/intel/igb/e1000_mac.c
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@ -191,6 +191,13 @@ s32 igb_check_alt_mac_addr(struct e1000_hw *hw)
u16 offset, nvm_alt_mac_addr_offset, nvm_data;
u8 alt_mac_addr[ETH_ALEN];
/*
* Alternate MAC address is handled by the option ROM for 82580
* and newer. SW support not required.
*/
if (hw->mac.type >= e1000_82580)
goto out;
ret_val = hw->nvm.ops.read(hw, NVM_ALT_MAC_ADDR_PTR, 1,
&nvm_alt_mac_addr_offset);
if (ret_val) {