diff options
| -rw-r--r-- | drivers/xen/pci.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/xen/pci.c b/drivers/xen/pci.c index 95ee4302ffb8..7494dbeb4409 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; |