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path: root/drivers/xen/pci.c
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Diffstat (limited to 'drivers/xen/pci.c')
-rw-r--r--drivers/xen/pci.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/xen/pci.c b/drivers/xen/pci.c
index 95ee430..7494dbe 100644
--- a/drivers/xen/pci.c
+++ b/drivers/xen/pci.c
@@ -19,6 +19,7 @@
#include <linux/pci.h>
#include <linux/acpi.h>
+#include <linux/pci-acpi.h>
#include <xen/xen.h>
#include <xen/interface/physdev.h>
#include <xen/interface/xen.h>
@@ -67,12 +68,22 @@ static int xen_add_device(struct device *dev)
#ifdef CONFIG_ACPI
handle = ACPI_HANDLE(&pci_dev->dev);
- if (!handle && pci_dev->bus->bridge)
- handle = ACPI_HANDLE(pci_dev->bus->bridge);
#ifdef CONFIG_PCI_IOV
if (!handle && pci_dev->is_virtfn)
handle = ACPI_HANDLE(physfn->bus->bridge);
#endif
+ if (!handle) {
+ /*
+ * This device was not listed in the ACPI name space at
+ * all. Try to get acpi handle of parent pci bus.
+ */
+ struct pci_bus *pbus;
+ for (pbus = pci_dev->bus; pbus; pbus = pbus->parent) {
+ handle = acpi_pci_get_bridge_handle(pbus);
+ if (handle)
+ break;
+ }
+ }
if (handle) {
acpi_status status;
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