e1000e: fix incorrect link status when switch module pulled

On 82571 with SerDes, the true link state is not always correct when read
from the STATUS register; use existing e1000_has_link() function instead.

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 473c414..37bcb19 100644 (file)
--- a/drivers/net/e1000e/e1000.h
+++ b/drivers/net/e1000e/e1000.h
@@ -389,6 +389,7 @@ extern int e1000e_setup_tx_resources(struct e1000_adapter *adapter);
 extern void e1000e_free_rx_resources(struct e1000_adapter *adapter);
 extern void e1000e_free_tx_resources(struct e1000_adapter *adapter);
 extern void e1000e_update_stats(struct e1000_adapter *adapter);
+extern bool e1000_has_link(struct e1000_adapter *adapter);
 extern void e1000e_set_interrupt_capability(struct e1000_adapter *adapter);
 extern void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter);
 

diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index 840e8c4..34f1f63 100644 (file)
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -173,11 +173,8 @@ static int e1000_get_settings(struct net_device *netdev,
 static u32 e1000_get_link(struct net_device *netdev)
 {
        struct e1000_adapter *adapter = netdev_priv(netdev);
-       struct e1000_hw *hw = &adapter->hw;
-       u32 status;
-       
-       status = er32(STATUS);
-       return (status & E1000_STATUS_LU) ? 1 : 0;
+
+       return e1000_has_link(adapter);
 }
 
 static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx)

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index b3f0b47..b1b534d 100644 (file)
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -3421,7 +3421,7 @@ static void e1000_print_link_info(struct e1000_adapter *adapter)
               ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" )));
 }
 
-static bool e1000_has_link(struct e1000_adapter *adapter)
+bool e1000_has_link(struct e1000_adapter *adapter)
 {
        struct e1000_hw *hw = &adapter->hw;
        bool link_active = 0;