PCI: Add pci_dev_flag for ACS enable quirks

Quirks that enable ACS-compatible functionality on a device need some way
to track whether a given device has been enabled.  Rather than create new
data structures for this, allocate one of the pci_dev_flags to indicate
this setup.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 0f76d0f66365c8ab5b0a0eddd4f0b8453e440fa2..60ab8d782f8c4d7c9730078a3acd00b4d79560e3 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -170,6 +170,8 @@ enum pci_dev_flags {
        PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
        /* Provide indication device is assigned by a Virtual Machine Manager */
        PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4,
+       /* Flag for quirk use to store if quirk-specific ACS is enabled */
+       PCI_DEV_FLAGS_ACS_ENABLED_QUIRK = (__force pci_dev_flags_t) 8,
 };
 
 enum pci_irq_reroute_variant {