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i40e: stop flow director on shutdown

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In some cases, the hardware would continue to try to access the FDIR
ring after entering D3Hot state, which would cause either PCIe errors or
NMIs, depending upon system configuration.

Explicitly stop FDIR in our shutdown routine to eliminate this
possibility.

Change-ID: Ib98060d6352ec595ab9a78bfe252675a9fa5d8bc
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>
This commit is contained in:
Mitch Williams 2015-03-31 00:45:04 -07:00 committed by Jeff Kirsher
parent c22c06c8d1
commit 3932dbfe1e
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/intel/i40e/i40e_main.c
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@ -10210,6 +10210,8 @@ static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
set_bit(__I40E_DOWN, &pf->state);
del_timer_sync(&pf->service_timer);
cancel_work_sync(&pf->service_task);
i40e_fdir_teardown(pf);
rtnl_lock();
i40e_prep_for_reset(pf);
rtnl_unlock();