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[Xen-changelog] [linux-2.6.18-xen] Backport: PCI: enhance pci_ari_enable

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Subject: [Xen-changelog] [linux-2.6.18-xen] Backport: PCI: enhance pci_ari_enabled()
From: "Xen patchbot-linux-2.6.18-xen" <patchbot-linux-2.6.18-xen@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 13 Mar 2009 00:50:21 -0700
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1236930099 0
# Node ID 955d92afcbce6e9a24274af626d9cb197ba837af
# Parent  44fd32e157f23d0a620b22ec32705fa0f5e04295
Backport: PCI: enhance pci_ari_enabled()

    commit 6a49d8120021897e139641062236215aac5d220e
    Author: Yu Zhao <yu.zhao@xxxxxxxxx>
    Date:   Sat Nov 22 02:38:21 2008 +0800

    PCI: enhance pci_ari_enabled()

    Change parameter of pci_ari_enabled() from 'pci_dev' to 'pci_bus'.

    ARI forwarding on the bridge mostly concerns the subordinate
    rather than the bridge itself. So this change will make the
    easier to use.

    Signed-off-by: Yu Zhao <yu.zhao@xxxxxxxxx>
    Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>

Signed-off-by: Yu Zhao <yu.zhao@xxxxxxxxx>
 drivers/pci/pci.h |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff -r 44fd32e157f2 -r 955d92afcbce drivers/pci/pci.h
--- a/drivers/pci/pci.h Fri Mar 13 07:41:23 2009 +0000
+++ b/drivers/pci/pci.h Fri Mar 13 07:41:39 2009 +0000
@@ -122,11 +122,11 @@ extern void pci_enable_ari(struct pci_de
 extern void pci_enable_ari(struct pci_dev *dev);
  * pci_ari_enabled - query ARI forwarding status
- * @dev: the PCI device
+ * @bus: the PCI bus
  * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
-static inline int pci_ari_enabled(struct pci_dev *dev)
+static inline int pci_ari_enabled(struct pci_bus *bus)
-       return dev->ari_enabled;
+       return bus->self && bus->self->ari_enabled;

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