When the .remove() callback for a PF is called, SR-IOV support for the
device is disabled, which requires unbinding and removing the VFs.
The VFs may be in-use either by the host kernel or userspace, such as
assigned to a VM through vfio-pci. In this latter case, the VFs may
be removed either by shutting down the VM or hot-unplugging the
devices from the VM. Unfortunately in the case of a Windows 2012 R2
guest, hot-unplug is broken due to the ordering of the PF driver
teardown. Disabling SR-IOV prior to unregister_netdev() avoids this
issue.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
*/
igb_release_hw_control(adapter);
- unregister_netdev(netdev);
-
- igb_clear_interrupt_scheme(adapter);
-
#ifdef CONFIG_PCI_IOV
igb_disable_sriov(pdev);
#endif
+ unregister_netdev(netdev);
+
+ igb_clear_interrupt_scheme(adapter);
+
pci_iounmap(pdev, hw->hw_addr);
if (hw->flash_address)
iounmap(hw->flash_address);