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igb: Alternate MAC Address EEPROM Updates

This code check word 0x37 in the EEPROM, if it is 0xFFFF _or_ 0x0000, then
there is no Alternate MAC Address in the EEPROM.

Signed-off-by: "Akeem G. Abodunrin" <akeem.g.abodunrin@intel.com>
Tested-by:  Aaron Brown  <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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1 parent 76d0652 commit 6538ee62d597ca09035c33838d7516455f4fd3e1 Akeem G. Abodunrin committed with Jkirsher Sep 2, 2011
Showing with 2 additions and 2 deletions.
  1. +2 −2 drivers/net/ethernet/intel/igb/e1000_mac.c
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4 drivers/net/ethernet/intel/igb/e1000_mac.c
@@ -198,10 +198,10 @@ s32 igb_check_alt_mac_addr(struct e1000_hw *hw)
goto out;
}
- if (nvm_alt_mac_addr_offset == 0xFFFF) {
+ if ((nvm_alt_mac_addr_offset == 0xFFFF) ||
+ (nvm_alt_mac_addr_offset == 0x0000))
/* There is no Alternate MAC Address */
goto out;
- }
if (hw->bus.func == E1000_FUNC_1)
nvm_alt_mac_addr_offset += E1000_ALT_MAC_ADDRESS_OFFSET_LAN1;

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