Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[linux-2.6-microblaze.git] / drivers / net / ethernet / intel / e1000e / netdev.c

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index f88dac6..851f793 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -1060,6 +1060,13 @@ static void e1000_print_hw_hang(struct work_struct *work)
                ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
                /* execute the writes immediately */
                e1e_flush();
+               /*
+                * Due to rare timing issues, write to TIDV again to ensure
+                * the write is successful
+                */
+               ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
+               /* execute the writes immediately */
+               e1e_flush();
                adapter->tx_hang_recheck = true;
                return;
        }
@@ -3615,6 +3622,16 @@ static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
 
        /* execute the writes immediately */
        e1e_flush();
+
+       /*
+        * due to rare timing issues, write to TIDV/RDTR again to ensure the
+        * write is successful
+        */
+       ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
+       ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
+
+       /* execute the writes immediately */
+       e1e_flush();
 }
 
 static void e1000e_update_stats(struct e1000_adapter *adapter);
@@ -3967,6 +3984,10 @@ static int e1000_close(struct net_device *netdev)
 {
        struct e1000_adapter *adapter = netdev_priv(netdev);
        struct pci_dev *pdev = adapter->pdev;
+       int count = E1000_CHECK_RESET_COUNT;
+
+       while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
+               usleep_range(10000, 20000);
 
        WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
 
@@ -5471,6 +5492,11 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
        netif_device_detach(netdev);
 
        if (netif_running(netdev)) {
+               int count = E1000_CHECK_RESET_COUNT;
+
+               while (test_bit(__E1000_RESETTING, &adapter->state) && count--)
+                       usleep_range(10000, 20000);
+
                WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
                e1000e_down(adapter);
                e1000_free_irq(adapter);