diff options
Diffstat (limited to 'drivers/acpi/acpica/evregion.c')
| -rw-r--r-- | drivers/acpi/acpica/evregion.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index 19a4e695555f..432b81080369 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -529,6 +529,52 @@ acpi_ev_attach_region(union acpi_operand_object *handler_obj, /******************************************************************************* * + * FUNCTION: acpi_ev_associate_reg_method + * + * PARAMETERS: region_obj - Region object + * + * RETURN: Status + * + * DESCRIPTION: Find and associate _REG method to a region + * + ******************************************************************************/ + +void acpi_ev_associate_reg_method(union acpi_operand_object *region_obj) +{ + acpi_name *reg_name_ptr = (acpi_name *) METHOD_NAME__REG; + struct acpi_namespace_node *method_node; + struct acpi_namespace_node *node; + union acpi_operand_object *region_obj2; + acpi_status status; + + ACPI_FUNCTION_TRACE(ev_associate_reg_method); + + region_obj2 = acpi_ns_get_secondary_object(region_obj); + if (!region_obj2) { + return_VOID; + } + + node = region_obj->region.node->parent; + + /* Find any "_REG" method associated with this region definition */ + + status = + acpi_ns_search_one_scope(*reg_name_ptr, node, ACPI_TYPE_METHOD, + &method_node); + if (ACPI_SUCCESS(status)) { + /* + * The _REG method is optional and there can be only one per region + * definition. This will be executed when the handler is attached + * or removed + */ + region_obj2->extra.method_REG = method_node; + } + + return_VOID; +} + +/******************************************************************************* + * * FUNCTION: acpi_ev_execute_reg_method * * PARAMETERS: region_obj - Region object |