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authorBruce Allan <bruce.w.allan@intel.com>2008-11-21 17:00:22 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-21 17:00:22 -0800
commit8452759060ad46fc071a7d5bbf1647df5ea2ceab (patch)
treed6dc357a82e32e1c021773dfe9163e053fbdd711
parent0285c8dcaeaa73ddadc4f38383e5bbc03c394a29 (diff)
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>
-rw-r--r--drivers/net/e1000e/e1000.h1
-rw-r--r--drivers/net/e1000e/ethtool.c8
-rw-r--r--drivers/net/e1000e/netdev.c3
3 files changed, 7 insertions, 5 deletions
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
index c55fd6fdb91..473c41479ec 100644
--- a/drivers/net/e1000e/e1000.h
+++ b/drivers/net/e1000e/e1000.h
@@ -193,6 +193,7 @@ struct e1000_adapter {
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 875d769531f..840e8c4fb75 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -588,7 +588,6 @@ static void e1000_get_drvinfo(struct net_device *netdev,
{
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 @@ static void e1000_get_drvinfo(struct net_device *netdev,
* 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 f10252b055d..b3f0b479701 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);