2 files changed, 0 insertions, 51 deletions

diff --git a/drivers/net/ixgbevf/ixgbevf.h b/drivers/net/ixgbevf/ixgbevf.h
index a63efcb2cf1b..b703f60be3b7 100644
--- a/drivers/net/ixgbevf/ixgbevf.h
+++ b/drivers/net/ixgbevf/ixgbevf.h
@@ -207,7 +207,6 @@ struct ixgbevf_adapter {
         u64 hw_tso_ctxt;
         u64 hw_tso6_ctxt;
         u32 tx_timeout_count;
-        bool detect_tx_hung;
 
         /* RX */
         struct ixgbevf_ring *rx_ring;   /* One per active queue */
diff --git a/drivers/net/ixgbevf/ixgbevf_main.c b/drivers/net/ixgbevf/ixgbevf_main.c
index 82768812552d..c1fb2c1b540e 100644
--- a/drivers/net/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ixgbevf/ixgbevf_main.c
@@ -162,40 +162,6 @@ static void ixgbevf_unmap_and_free_tx_resource(struct ixgbevf_adapter *adapter,
         /* tx_buffer_info must be completely set up in the transmit path */
 }
 
-static inline bool ixgbevf_check_tx_hang(struct ixgbevf_adapter *adapter,
-                                         struct ixgbevf_ring *tx_ring,
-                                         unsigned int eop)
-{
-        struct ixgbe_hw *hw = &adapter->hw;
-        u32 head, tail;
-
-        /* Detect a transmit hang in hardware, this serializes the
-         * check with the clearing of time_stamp and movement of eop */
-        head = readl(hw->hw_addr + tx_ring->head);
-        tail = readl(hw->hw_addr + tx_ring->tail);
-        adapter->detect_tx_hung = false;
-        if ((head != tail) &&
-            tx_ring->tx_buffer_info[eop].time_stamp &&
-            time_after(jiffies, tx_ring->tx_buffer_info[eop].time_stamp + HZ)) {
-                /* detected Tx unit hang */
-                printk(KERN_ERR "Detected Tx Unit Hang\n"
-                       "  Tx Queue             <%d>\n"
-                       "  TDH, TDT             <%x>, <%x>\n"
-                       "  next_to_use          <%x>\n"
-                       "  next_to_clean        <%x>\n"
-                       "tx_buffer_info[next_to_clean]\n"
-                       "  time_stamp           <%lx>\n"
-                       "  jiffies              <%lx>\n",
-                       tx_ring->queue_index,
-                       head, tail,
-                       tx_ring->next_to_use, eop,
-                       tx_ring->tx_buffer_info[eop].time_stamp, jiffies);
-                return true;
-        }
-
-        return false;
-}
-
 #define IXGBE_MAX_TXD_PWR       14
 #define IXGBE_MAX_DATA_PER_TXD  (1 << IXGBE_MAX_TXD_PWR)
 
@@ -291,16 +257,6 @@ static bool ixgbevf_clean_tx_irq(struct ixgbevf_adapter *adapter,
 #endif
         }
 
-        if (adapter->detect_tx_hung) {
-                if (ixgbevf_check_tx_hang(adapter, tx_ring, i)) {
-                        /* schedule immediate reset if we believe we hung */
-                        printk(KERN_INFO
-                               "tx hang %d detected, resetting adapter\n",
-                               adapter->tx_timeout_count + 1);
-                        ixgbevf_tx_timeout(adapter->netdev);
-                }
-        }
-
         /* re-arm the interrupt */
         if ((count >= tx_ring->work_limit) &&
             (!test_bit(__IXGBEVF_DOWN, &adapter->state))) {
@@ -2412,9 +2368,6 @@ static void ixgbevf_watchdog_task(struct work_struct *work)
                                10 : 1);
                         netif_carrier_on(netdev);
                         netif_tx_wake_all_queues(netdev);
-                } else {
-                        /* Force detection of hung controller */
-                        adapter->detect_tx_hung = true;
                 }
         } else {
                 adapter->link_up = false;
@@ -2429,9 +2382,6 @@ static void ixgbevf_watchdog_task(struct work_struct *work)
         ixgbevf_update_stats(adapter);
 
 pf_has_reset:
-        /* Force detection of hung controller every watchdog period */
-        adapter->detect_tx_hung = true;
-
         /* Reset the timer */
         if (!test_bit(__IXGBEVF_DOWN, &adapter->state))
                 mod_timer(&adapter->watchdog_timer,