*****************************************************************************/
/*
- * Copyright (C) 2000 - 2004, R. Byron Moore
+ * Copyright (C) 2000 - 2006, R. Byron Moore
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* POSSIBILITY OF SUCH DAMAGES.
*/
-
#include <acpi/acpi.h>
#include <acpi/acnamesp.h>
#include <acpi/acevents.h>
#define _COMPONENT ACPI_EVENTS
- ACPI_MODULE_NAME ("evxfregn")
-
+ACPI_MODULE_NAME("evxfregn")
/*******************************************************************************
*
* DESCRIPTION: Install a handler for all op_regions of a given space_id.
*
******************************************************************************/
-
acpi_status
-acpi_install_address_space_handler (
- acpi_handle device,
- acpi_adr_space_type space_id,
- acpi_adr_space_handler handler,
- acpi_adr_space_setup setup,
- void *context)
+acpi_install_address_space_handler(acpi_handle device,
+ acpi_adr_space_type space_id,
+ acpi_adr_space_handler handler,
+ acpi_adr_space_setup setup, void *context)
{
- struct acpi_namespace_node *node;
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("acpi_install_address_space_handler");
+ struct acpi_namespace_node *node;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE(acpi_install_address_space_handler);
/* Parameter validation */
if (!device) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/* Convert and validate the device handle */
- node = acpi_ns_map_handle_to_node (device);
+ node = acpi_ns_map_handle_to_node(device);
if (!node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
/* Install the handler for all Regions for this Space ID */
- status = acpi_ev_install_space_handler (node, space_id, handler, setup, context);
- if (ACPI_FAILURE (status)) {
+ status =
+ acpi_ev_install_space_handler(node, space_id, handler, setup,
+ context);
+ if (ACPI_FAILURE(status)) {
goto unlock_and_exit;
}
/* Run all _REG methods for this address space */
- status = acpi_ev_execute_reg_methods (node, space_id);
+ status = acpi_ev_execute_reg_methods(node, space_id);
-unlock_and_exit:
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS (status);
+ unlock_and_exit:
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ return_ACPI_STATUS(status);
}
+ACPI_EXPORT_SYMBOL(acpi_install_address_space_handler)
/*******************************************************************************
*
* DESCRIPTION: Remove a previously installed handler.
*
******************************************************************************/
-
acpi_status
-acpi_remove_address_space_handler (
- acpi_handle device,
- acpi_adr_space_type space_id,
- acpi_adr_space_handler handler)
+acpi_remove_address_space_handler(acpi_handle device,
+ acpi_adr_space_type space_id,
+ acpi_adr_space_handler handler)
{
- union acpi_operand_object *obj_desc;
- union acpi_operand_object *handler_obj;
- union acpi_operand_object *region_obj;
- union acpi_operand_object **last_obj_ptr;
- struct acpi_namespace_node *node;
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("acpi_remove_address_space_handler");
+ union acpi_operand_object *obj_desc;
+ union acpi_operand_object *handler_obj;
+ union acpi_operand_object *region_obj;
+ union acpi_operand_object **last_obj_ptr;
+ struct acpi_namespace_node *node;
+ acpi_status status;
+ ACPI_FUNCTION_TRACE(acpi_remove_address_space_handler);
/* Parameter validation */
if (!device) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/* Convert and validate the device handle */
- node = acpi_ns_map_handle_to_node (device);
- if (!node) {
+ node = acpi_ns_map_handle_to_node(device);
+ if (!node ||
+ ((node->type != ACPI_TYPE_DEVICE) &&
+ (node->type != ACPI_TYPE_PROCESSOR) &&
+ (node->type != ACPI_TYPE_THERMAL) &&
+ (node != acpi_gbl_root_node))) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
/* Make sure the internal object exists */
- obj_desc = acpi_ns_get_attached_object (node);
+ obj_desc = acpi_ns_get_attached_object(node);
if (!obj_desc) {
status = AE_NOT_EXIST;
goto unlock_and_exit;
handler_obj = obj_desc->device.handler;
last_obj_ptr = &obj_desc->device.handler;
while (handler_obj) {
+
/* We have a handler, see if user requested this one */
if (handler_obj->address_space.space_id == space_id) {
+
+ /* Handler must be the same as the installed handler */
+
+ if (handler_obj->address_space.handler != handler) {
+ status = AE_BAD_PARAMETER;
+ goto unlock_and_exit;
+ }
+
/* Matched space_id, first dereference this in the Regions */
- ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
- "Removing address handler %p(%p) for region %s on Device %p(%p)\n",
- handler_obj, handler, acpi_ut_get_region_name (space_id),
- node, obj_desc));
+ ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
+ "Removing address handler %p(%p) for region %s on Device %p(%p)\n",
+ handler_obj, handler,
+ acpi_ut_get_region_name(space_id),
+ node, obj_desc));
region_obj = handler_obj->address_space.region_list;
* The region is just inaccessible as indicated to
* the _REG method
*/
- acpi_ev_detach_region (region_obj, TRUE);
+ acpi_ev_detach_region(region_obj, TRUE);
/*
* Walk the list: Just grab the head because the
* detach_region removed the previous head.
*/
- region_obj = handler_obj->address_space.region_list;
+ region_obj =
+ handler_obj->address_space.region_list;
}
/* Now we can delete the handler object */
- acpi_ut_remove_reference (handler_obj);
+ acpi_ut_remove_reference(handler_obj);
goto unlock_and_exit;
}
/* The handler does not exist */
- ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
- "Unable to remove address handler %p for %s(%X), dev_node %p, obj %p\n",
- handler, acpi_ut_get_region_name (space_id), space_id, node, obj_desc));
+ ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
+ "Unable to remove address handler %p for %s(%X), DevNode %p, obj %p\n",
+ handler, acpi_ut_get_region_name(space_id), space_id,
+ node, obj_desc));
status = AE_NOT_EXIST;
-unlock_and_exit:
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS (status);
+ unlock_and_exit:
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ return_ACPI_STATUS(status);
}
-
+ACPI_EXPORT_SYMBOL(acpi_remove_address_space_handler)
git://git.onelab.eu / linux-2.6.git / blobdiff