i40e: stop the service task at shutdown

Stop the service task in the shutdown handler, preventing it from
accessing the admin queue after it had been closed. This fixes a panic
that could occur when the system was shut down with a lot of VFs
enabled.

Change-ID: I286735e3842de472385bbf7ad68d30331e508add
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 9efb69ab2ab0..1923a0bcd6e6 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -9736,6 +9736,8 @@ static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
 
         set_bit(__I40E_SUSPENDED, &pf->state);
         set_bit(__I40E_DOWN, &pf->state);
+        del_timer_sync(&pf->service_timer);
+        cancel_work_sync(&pf->service_task);
         rtnl_lock();
         i40e_prep_for_reset(pf);
         rtnl_unlock();