From: Greg Rose <gregory.v.r...@intel.com>
The i40e_suspend() function calls another function that preps the device
for the power save and resume by freeing all the Tx/Rx resources and
interrupts but that function does not free the "other" causes interrupt
vector and IRQ. It also fails to call synchronize_irq() before freeing
the IRQ vectors. This sometimes may result in some AER errors on those
systems with that PCIe error reporting feature enabled.
Call synchronize_irq() before freeing IRQ vectors and explicitly free
the other causes interrupt resources and shut down that MSIX interrupt.
Change-ID: Ib88e4536756518a352446da0232189716618ad81
Signed-off-by: Greg Rose <gregory.v.r...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
drivers/net/ethernet/intel/i40e/i40e_main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c
b/drivers/net/ethernet/intel/i40e/i40e_main.c
index a2b4012..e071c22 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -3950,6 +3950,7 @@ static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
/* clear the affinity_mask in the IRQ descriptor */
irq_set_affinity_hint(pf->msix_entries[vector].vector,
NULL);
+ synchronize_irq(pf->msix_entries[vector].vector);
free_irq(pf->msix_entries[vector].vector,
vsi->q_vectors[i]);
@@ -11451,6 +11452,8 @@ static int i40e_suspend(struct pci_dev *pdev,
pm_message_t state)
wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
+ i40e_stop_misc_vector(pf);
+
pci_wake_from_d3(pdev, pf->wol_en);
pci_set_power_state(pdev, PCI_D3hot);
--
2.5.5
