Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2015-03-20

This series contains updates to ixgb, e1000e, igb and igbvf.

Eliezer and Todd provide patches to fix a potential issue found during code
inspection.  When bringing down an interface netif_carrier_off() should
be one of the first things we do, since this will prevent the stack from
queueing more packets to this interface.

Yanir provides a fix for e1000e that was found in validating i219,
where the call to e1000e_write_protect_nvm_ich8lan() is no longer
supported in newer hardware.  Access to these registers causes a
system freeze in early steppings and is ignored in later steppings.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 8 insertions, 9 deletions

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 4be4576d71aa..4e56c3195989 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -4084,6 +4084,8 @@ void e1000e_down(struct e1000_adapter *adapter, bool reset)
 	 */
 	set_bit(__E1000_DOWN, &adapter->state);
 
+	netif_carrier_off(netdev);
+
 	/* disable receives in the hardware */
 	rctl = er32(RCTL);
 	if (!(adapter->flags2 & FLAG2_NO_DISABLE_RX))
@@ -4108,8 +4110,6 @@ void e1000e_down(struct e1000_adapter *adapter, bool reset)
 	del_timer_sync(&adapter->watchdog_timer);
 	del_timer_sync(&adapter->phy_info_timer);
 
-	netif_carrier_off(netdev);
-
 	spin_lock(&adapter->stats64_lock);
 	e1000e_update_stats(adapter);
 	spin_unlock(&adapter->stats64_lock);
@@ -6874,7 +6874,8 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 		goto err_hw_init;
 
 	if ((adapter->flags & FLAG_IS_ICH) &&
-	    (adapter->flags & FLAG_READ_ONLY_NVM))
+	    (adapter->flags & FLAG_READ_ONLY_NVM) &&
+	    (hw->mac.type < e1000_pch_spt))
 		e1000e_write_protect_nvm_ich8lan(&adapter->hw);
 
 	hw->mac.ops.get_bus_info(&adapter->hw);
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index f366b3b96d03..0e07545ccc97 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -1776,6 +1776,7 @@ void igb_down(struct igb_adapter *adapter)
 	wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN);
 	/* flush and sleep below */
 
+	netif_carrier_off(netdev);
 	netif_tx_stop_all_queues(netdev);
 
 	/* disable transmits in the hardware */
@@ -1797,12 +1798,9 @@ void igb_down(struct igb_adapter *adapter)
 		}
 	}
 
-
 	del_timer_sync(&adapter->watchdog_timer);
 	del_timer_sync(&adapter->phy_info_timer);
 
-	netif_carrier_off(netdev);
-
 	/* record the stats before reset*/
 	spin_lock(&adapter->stats64_lock);
 	igb_update_stats(adapter, &adapter->stats64);
diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c
index c17ea4b8f84d..95af14e139d7 100644
--- a/drivers/net/ethernet/intel/igbvf/netdev.c
+++ b/drivers/net/ethernet/intel/igbvf/netdev.c
@@ -1519,6 +1519,7 @@ void igbvf_down(struct igbvf_adapter *adapter)
 	rxdctl = er32(RXDCTL(0));
 	ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
 
+	netif_carrier_off(netdev);
 	netif_stop_queue(netdev);
 
 	/* disable transmits in the hardware */
@@ -1535,8 +1536,6 @@ void igbvf_down(struct igbvf_adapter *adapter)
 
 	del_timer_sync(&adapter->watchdog_timer);
 
-	netif_carrier_off(netdev);
-
 	/* record the stats before reset*/
 	igbvf_update_stats(adapter);
 
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
index 11a1bdbe3fd9..31f91459312f 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
@@ -285,6 +285,8 @@ ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog)
 	/* prevent the interrupt handler from restarting watchdog */
 	set_bit(__IXGB_DOWN, &adapter->flags);
 
+	netif_carrier_off(netdev);
+
 	napi_disable(&adapter->napi);
 	/* waiting for NAPI to complete can re-enable interrupts */
 	ixgb_irq_disable(adapter);
@@ -298,7 +300,6 @@ ixgb_down(struct ixgb_adapter *adapter, bool kill_watchdog)
 
 	adapter->link_speed = 0;
 	adapter->link_duplex = 0;
-	netif_carrier_off(netdev);
 	netif_stop_queue(netdev);
 
 	ixgb_reset(adapter);