1 files changed, 7 insertions, 3 deletions

diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c
index 95bc09c73a6a..f2d53af97610 100644
--- a/drivers/acpi/events/evrgnini.c
+++ b/drivers/acpi/events/evrgnini.c
@@ -218,10 +218,14 @@ acpi_ev_pci_config_region_setup (
                 while (pci_root_node != acpi_gbl_root_node) {
                         status = acpi_ut_execute_HID (pci_root_node, &object_hID);
                         if (ACPI_SUCCESS (status)) {
-                                /* Got a valid _HID, check if this is a PCI root */
-
+                                /*
+                                 * Got a valid _HID string, check if this is a PCI root.
+                                 * New for ACPI 3.0: check for a PCI Express root also.
+                                 */
                                 if (!(ACPI_STRNCMP (object_hID.value, PCI_ROOT_HID_STRING,
-                                                   sizeof (PCI_ROOT_HID_STRING)))) {
+                                                   sizeof (PCI_ROOT_HID_STRING))           ||
+                                        !(ACPI_STRNCMP (object_hID.value, PCI_EXPRESS_ROOT_HID_STRING,
+                                                          sizeof (PCI_EXPRESS_ROOT_HID_STRING))))) {
                                         /* Install a handler for this PCI root bridge */
 
                                         status = acpi_install_address_space_handler ((acpi_handle) pci_root_node,