diff options
Diffstat (limited to 'drivers/acpi/events/evrgnini.c')
| -rw-r--r-- | drivers/acpi/events/evrgnini.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c index baed8c1a1b9..a0bffc2a078 100644 --- a/drivers/acpi/events/evrgnini.c +++ b/drivers/acpi/events/evrgnini.c @@ -199,6 +199,7 @@ acpi_ev_pci_config_region_setup(acpi_handle handle, * handlers with that device. */ if (handler_obj->address_space.node == acpi_gbl_root_node) { + /* Start search from the parent object */ pci_root_node = parent_node; @@ -220,6 +221,7 @@ acpi_ev_pci_config_region_setup(acpi_handle handle, PCI_EXPRESS_ROOT_HID_STRING, sizeof(PCI_EXPRESS_ROOT_HID_STRING))))) { + /* Install a handler for this PCI root bridge */ status = @@ -478,11 +480,13 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj, * ie: acpi_gbl_root_node->parent_entry being set to NULL */ while (node) { + /* Check to see if a handler exists */ handler_obj = NULL; obj_desc = acpi_ns_get_attached_object(node); if (obj_desc) { + /* Can only be a handler if the object exists */ switch (node->type) { @@ -507,10 +511,12 @@ acpi_ev_initialize_region(union acpi_operand_object *region_obj, } while (handler_obj) { + /* Is this handler of the correct type? */ if (handler_obj->address_space.space_id == space_id) { + /* Found correct handler */ ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, |