1 files changed, 4 insertions, 1 deletions

diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 7c0ad634694a..2ec04c424a62 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -223,8 +223,11 @@ res_alloc_fail:
         return;
 }
 
-struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
+struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
 {
+        struct acpi_device *device = root->device;
+        int domain = root->segment;
+        int busnum = root->secondary.start;
         struct pci_bus *bus;
         struct pci_sysdata *sd;
         int node;