Commit ccbc175a authored Jul 07, 2015 by Alexander Duyck Committed by Bjorn Helgaas Jul 21, 2015

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 <alexander.h.duyck@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Allen Kay <allen.m.kay@intel.com>
CC: Chris Wright <chris@sous-sol.org>
CC: Alex Williamson <alex.williamson@redhat.com>

parent bc0195aa

drivers/pci/pci.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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;

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