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e1000: Prevent reset task killing itself.

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Killing reset task while adapter is resetting causes deadlock.
Only kill reset task if adapter is not resetting.
Ref bug #43132 on bugzilla.kernel.org

CC: stable@vger.kernel.org
Signed-off-by: Tushar Dave <tushar.n.dave@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tushar Dave 2012-05-17 01:04:50 +00:00 committed by David S. Miller
parent bad115cfe5
commit 8ce6909f77
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/intel/e1000/e1000_main.c
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@ -493,7 +493,11 @@ static void e1000_power_down_phy(struct e1000_adapter *adapter)
static void e1000_down_and_stop(struct e1000_adapter *adapter)
{
set_bit(__E1000_DOWN, &adapter->flags);
cancel_work_sync(&adapter->reset_task);
/* Only kill reset task if adapter is not resetting */
if (!test_bit(__E1000_RESETTING, &adapter->flags))
cancel_work_sync(&adapter->reset_task);
cancel_delayed_work_sync(&adapter->watchdog_task);
cancel_delayed_work_sync(&adapter->phy_info_task);
cancel_delayed_work_sync(&adapter->fifo_stall_task);