e1000e: store EEPROM version number to prevent unnecessary NVM reads

Rather than reading the NVM to get the EEPROM version number everytime the
ethool get_drvinfo function is called, read it once during probe and save
it for future reference.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index f10252b055d4..b3f0b4797016 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -5025,6 +5025,9 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
         adapter->wol = adapter->eeprom_wol;
         device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
 
+        /* save off EEPROM version number */
+        e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
+
         /* reset the hardware with the new settings */
         e1000e_reset(adapter);