1 files changed, 21 insertions, 10 deletions

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 174633c93325..3fa110ddb041 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -3344,6 +3344,21 @@ int e1000e_up(struct e1000_adapter *adapter)
         return 0;
 }
 
+static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
+{
+        struct e1000_hw *hw = &adapter->hw;
+
+        if (!(adapter->flags2 & FLAG2_DMA_BURST))
+                return;
+
+        /* flush pending descriptor writebacks to memory */
+        ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
+        ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
+
+        /* execute the writes immediately */
+        e1e_flush();
+}
+
 void e1000e_down(struct e1000_adapter *adapter)
 {
         struct net_device *netdev = adapter->netdev;
@@ -3383,6 +3398,9 @@ void e1000e_down(struct e1000_adapter *adapter)
 
         if (!pci_channel_offline(adapter->pdev))
                 e1000e_reset(adapter);
+
+        e1000e_flush_descriptors(adapter);
+
         e1000_clean_tx_ring(adapter);
         e1000_clean_rx_ring(adapter);
 
@@ -4354,19 +4372,12 @@ link_up:
         else
                 ew32(ICS, E1000_ICS_RXDMT0);
 
+        /* flush pending descriptors to memory before detecting Tx hang */
+        e1000e_flush_descriptors(adapter);
+
         /* Force detection of hung controller every watchdog period */
         adapter->detect_tx_hung = 1;
 
-        /* flush partial descriptors to memory before detecting Tx hang */
-        if (adapter->flags2 & FLAG2_DMA_BURST) {
-                ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
-                ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
-                /*
-                 * no need to flush the writes because the timeout code does
-                 * an er32 first thing
-                 */
-        }
-
         /*
          * With 82571 controllers, LAA may be overwritten due to controller
          * reset from the other port. Set the appropriate LAA in RAR[0]