igb: Read flow control for i350 from correct EEPROM section

Flow control is defined in the four EEPROM sections but the driver only reads
from section 0.

Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/net/ethernet/intel/igb/e1000_mac.c b/drivers/net/ethernet/intel/igb/e1000_mac.c
index f0dfd41dd4bd..298f0ed50670 100644
--- a/drivers/net/ethernet/intel/igb/e1000_mac.c
+++ b/drivers/net/ethernet/intel/igb/e1000_mac.c
@@ -712,6 +712,7 @@ static s32 igb_set_fc_watermarks(struct e1000_hw *hw)
 static s32 igb_set_default_fc(struct e1000_hw *hw)
 {
         s32 ret_val = 0;
+        u16 lan_offset;
         u16 nvm_data;
 
         /* Read and store word 0x0F of the EEPROM. This word contains bits
@@ -722,7 +723,14 @@ static s32 igb_set_default_fc(struct e1000_hw *hw)
          * control setting, then the variable hw->fc will
          * be initialized based on a value in the EEPROM.
          */
-        ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL2_REG, 1, &nvm_data);
+        if (hw->mac.type == e1000_i350) {
+                lan_offset = NVM_82580_LAN_FUNC_OFFSET(hw->bus.func);
+                ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL2_REG
+                                           + lan_offset, 1, &nvm_data);
+         } else {
+                ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL2_REG,
+                                           1, &nvm_data);
+         }
 
         if (ret_val) {
                 hw_dbg("NVM Read Error\n");