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>
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
index c55fd6f..473c414 100644
--- a/drivers/net/e1000e/e1000.h
+++ b/drivers/net/e1000e/e1000.h
@@ -193,6 +193,7 @@
u16 mng_vlan_id;
u16 link_speed;
u16 link_duplex;
+ u16 eeprom_vers;
spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index 875d769..840e8c4 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -588,7 +588,6 @@
{
struct e1000_adapter *adapter = netdev_priv(netdev);
char firmware_version[32];
- u16 eeprom_data;
strncpy(drvinfo->driver, e1000e_driver_name, 32);
strncpy(drvinfo->version, e1000e_driver_version, 32);
@@ -597,11 +596,10 @@
* EEPROM image version # is reported as firmware version # for
* PCI-E controllers
*/
- e1000_read_nvm(&adapter->hw, 5, 1, &eeprom_data);
sprintf(firmware_version, "%d.%d-%d",
- (eeprom_data & 0xF000) >> 12,
- (eeprom_data & 0x0FF0) >> 4,
- eeprom_data & 0x000F);
+ (adapter->eeprom_vers & 0xF000) >> 12,
+ (adapter->eeprom_vers & 0x0FF0) >> 4,
+ (adapter->eeprom_vers & 0x000F));
strncpy(drvinfo->fw_version, firmware_version, 32);
strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index f10252b..b3f0b47 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -5025,6 +5025,9 @@
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);