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authorAlexander Duyck <[email protected]>2015-07-07 12:24:35 -0700
committerBjorn Helgaas <[email protected]>2015-07-21 10:40:56 -0500
commitccbc175aad819e1d4b6af6246b12d55b13d97815 (patch)
tree9814cde7741c61d198b3e6c32150a73bfb691ab2
parentbc0195aad0daa2ad5b0d76cce22b167bc3435590 (diff)
PCI: Restore ACS configuration as part of pci_restore_state()
Previously we did not restore ACS state after a PCIe reset. This meant that we could not reassign interfaces after a system suspend because the D0->D3 transition disabled ACS, and we didn't restore it when going back to D0. Restore ACS configuration in pci_restore_state(). [bhelgaas: changelog] Signed-off-by: Alexander Duyck <[email protected]> Signed-off-by: Bjorn Helgaas <[email protected]> CC: Allen Kay <[email protected]> CC: Chris Wright <[email protected]> CC: Alex Williamson <[email protected]>
-rw-r--r--drivers/pci/pci.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 0008c950452c..9bd9526f3388 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1092,6 +1092,9 @@ void pci_restore_state(struct pci_dev *dev)
pci_restore_pcix_state(dev);
pci_restore_msi_state(dev);
+
+ /* Restore ACS and IOV configuration state */
+ pci_enable_acs(dev);
pci_restore_iov_state(dev);
dev->state_saved = false;