e1000e: check down flag in tasks

This change is part of a fix to avoid any tasks running while the driver is
exiting and deinitializing resources.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index 3065870cf2a7..174633c93325 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -937,6 +937,9 @@ static void e1000_print_hw_hang(struct work_struct *work)
         u16 phy_status, phy_1000t_status, phy_ext_status;
         u16 pci_status;
 
+        if (test_bit(__E1000_DOWN, &adapter->state))
+                return;
+
         e1e_rphy(hw, PHY_STATUS, &phy_status);
         e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
         e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
@@ -1506,6 +1509,9 @@ static void e1000e_downshift_workaround(struct work_struct *work)
         struct e1000_adapter *adapter = container_of(work,
                                         struct e1000_adapter, downshift_task);
 
+        if (test_bit(__E1000_DOWN, &adapter->state))
+                return;
+
         e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
 }
 
@@ -3765,6 +3771,10 @@ static void e1000e_update_phy_task(struct work_struct *work)
 {
         struct e1000_adapter *adapter = container_of(work,
                                         struct e1000_adapter, update_phy_task);
+
+        if (test_bit(__E1000_DOWN, &adapter->state))
+                return;
+
         e1000_get_phy_info(&adapter->hw);
 }
 
@@ -3775,6 +3785,10 @@ static void e1000e_update_phy_task(struct work_struct *work)
 static void e1000_update_phy_info(unsigned long data)
 {
         struct e1000_adapter *adapter = (struct e1000_adapter *) data;
+
+        if (test_bit(__E1000_DOWN, &adapter->state))
+                return;
+
         schedule_work(&adapter->update_phy_task);
 }
 
@@ -4149,6 +4163,9 @@ static void e1000_watchdog_task(struct work_struct *work)
         u32 link, tctl;
         int tx_pending = 0;
 
+        if (test_bit(__E1000_DOWN, &adapter->state))
+                return;
+
         link = e1000e_has_link(adapter);
         if ((netif_carrier_ok(netdev)) && link) {
                 /* Cancel scheduled suspend requests. */
@@ -4887,6 +4904,10 @@ static void e1000_reset_task(struct work_struct *work)
         struct e1000_adapter *adapter;
         adapter = container_of(work, struct e1000_adapter, reset_task);
 
+        /* don't run the task if already down */
+        if (test_bit(__E1000_DOWN, &adapter->state))
+                return;
+
         if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
               (adapter->flags & FLAG_RX_RESTART_NOW))) {
                 e1000e_dump(adapter);