******************************************************************************/
/*
- * 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/acinterp.h>
-
#define _COMPONENT ACPI_NAMESPACE
- ACPI_MODULE_NAME ("nsxfeval")
-
+ACPI_MODULE_NAME("nsxfeval")
+#ifdef ACPI_FUTURE_USAGE
/*******************************************************************************
*
* FUNCTION: acpi_evaluate_object_typed
*
* PARAMETERS: Handle - Object handle (optional)
- * *Pathname - Object pathname (optional)
- * **external_params - List of parameters to pass to method,
+ * Pathname - Object pathname (optional)
+ * external_params - List of parameters to pass to method,
* terminated by NULL. May be NULL
* if no parameters are being passed.
- * *return_buffer - Where to put method's return value (if
+ * return_buffer - Where to put method's return value (if
* any). If NULL, no value is returned.
* return_type - Expected type of return object
*
* be valid (non-null)
*
******************************************************************************/
-
acpi_status
-acpi_evaluate_object_typed (
- acpi_handle handle,
- acpi_string pathname,
- struct acpi_object_list *external_params,
- struct acpi_buffer *return_buffer,
- acpi_object_type return_type)
+acpi_evaluate_object_typed(acpi_handle handle,
+ acpi_string pathname,
+ struct acpi_object_list * external_params,
+ struct acpi_buffer * return_buffer,
+ acpi_object_type return_type)
{
- acpi_status status;
- u8 must_free = FALSE;
-
-
- ACPI_FUNCTION_TRACE ("acpi_evaluate_object_typed");
+ acpi_status status;
+ u8 must_free = FALSE;
+ ACPI_FUNCTION_TRACE(acpi_evaluate_object_typed);
/* Return buffer must be valid */
if (!return_buffer) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
if (return_buffer->length == ACPI_ALLOCATE_BUFFER) {
/* Evaluate the object */
- status = acpi_evaluate_object (handle, pathname, external_params, return_buffer);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
+ status =
+ acpi_evaluate_object(handle, pathname, external_params,
+ return_buffer);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
}
/* Type ANY means "don't care" */
if (return_type == ACPI_TYPE_ANY) {
- return_ACPI_STATUS (AE_OK);
+ return_ACPI_STATUS(AE_OK);
}
if (return_buffer->length == 0) {
- /* Error because caller specifically asked for a return value */
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "No return value\n"));
+ /* Error because caller specifically asked for a return value */
- return_ACPI_STATUS (AE_NULL_OBJECT);
+ ACPI_ERROR((AE_INFO, "No return value"));
+ return_ACPI_STATUS(AE_NULL_OBJECT);
}
/* Examine the object type returned from evaluate_object */
- if (((union acpi_object *) return_buffer->pointer)->type == return_type) {
- return_ACPI_STATUS (AE_OK);
+ if (((union acpi_object *)return_buffer->pointer)->type == return_type) {
+ return_ACPI_STATUS(AE_OK);
}
/* Return object type does not match requested type */
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "Incorrect return type [%s] requested [%s]\n",
- acpi_ut_get_type_name (((union acpi_object *) return_buffer->pointer)->type),
- acpi_ut_get_type_name (return_type)));
+ ACPI_ERROR((AE_INFO,
+ "Incorrect return type [%s] requested [%s]",
+ acpi_ut_get_type_name(((union acpi_object *)return_buffer->
+ pointer)->type),
+ acpi_ut_get_type_name(return_type)));
if (must_free) {
+
/* Caller used ACPI_ALLOCATE_BUFFER, free the return buffer */
- acpi_os_free (return_buffer->pointer);
+ ACPI_FREE(return_buffer->pointer);
return_buffer->pointer = NULL;
}
return_buffer->length = 0;
- return_ACPI_STATUS (AE_TYPE);
+ return_ACPI_STATUS(AE_TYPE);
}
+ACPI_EXPORT_SYMBOL(acpi_evaluate_object_typed)
+#endif /* ACPI_FUTURE_USAGE */
/*******************************************************************************
*
* be valid (non-null)
*
******************************************************************************/
-
acpi_status
-acpi_evaluate_object (
- acpi_handle handle,
- acpi_string pathname,
- struct acpi_object_list *external_params,
- struct acpi_buffer *return_buffer)
+acpi_evaluate_object(acpi_handle handle,
+ acpi_string pathname,
+ struct acpi_object_list *external_params,
+ struct acpi_buffer *return_buffer)
{
- acpi_status status;
- acpi_status status2;
- struct acpi_parameter_info info;
- acpi_size buffer_space_needed;
- u32 i;
+ acpi_status status;
+ acpi_status status2;
+ struct acpi_evaluate_info *info;
+ acpi_size buffer_space_needed;
+ u32 i;
+ ACPI_FUNCTION_TRACE(acpi_evaluate_object);
- ACPI_FUNCTION_TRACE ("acpi_evaluate_object");
+ /* Allocate and initialize the evaluation information block */
+ info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
+ if (!info) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
- info.node = handle;
- info.parameters = NULL;
- info.return_object = NULL;
- info.parameter_type = ACPI_PARAM_ARGS;
+ info->pathname = pathname;
+ info->parameter_type = ACPI_PARAM_ARGS;
+
+ /* Convert and validate the device handle */
+
+ info->prefix_node = acpi_ns_map_handle_to_node(handle);
+ if (!info->prefix_node) {
+ status = AE_BAD_PARAMETER;
+ goto cleanup;
+ }
/*
- * If there are parameters to be passed to the object
- * (which must be a control method), the external objects
- * must be converted to internal objects
+ * If there are parameters to be passed to a control method, the external
+ * objects must all be converted to internal objects
*/
if (external_params && external_params->count) {
/*
* Allocate a new parameter block for the internal objects
* Add 1 to count to allow for null terminated internal list
*/
- info.parameters = ACPI_MEM_CALLOCATE (
- ((acpi_size) external_params->count + 1) *
- sizeof (void *));
- if (!info.parameters) {
- return_ACPI_STATUS (AE_NO_MEMORY);
+ info->parameters = ACPI_ALLOCATE_ZEROED(((acpi_size)
+ external_params->
+ count +
+ 1) * sizeof(void *));
+ if (!info->parameters) {
+ status = AE_NO_MEMORY;
+ goto cleanup;
}
- /*
- * Convert each external object in the list to an
- * internal object
- */
+ /* Convert each external object in the list to an internal object */
+
for (i = 0; i < external_params->count; i++) {
- status = acpi_ut_copy_eobject_to_iobject (&external_params->pointer[i],
- &info.parameters[i]);
- if (ACPI_FAILURE (status)) {
- acpi_ut_delete_internal_object_list (info.parameters);
- return_ACPI_STATUS (status);
+ status =
+ acpi_ut_copy_eobject_to_iobject(&external_params->
+ pointer[i],
+ &info->
+ parameters[i]);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
}
}
- info.parameters[external_params->count] = NULL;
+ info->parameters[external_params->count] = NULL;
}
-
/*
* Three major cases:
* 1) Fully qualified pathname
* 2) No handle, not fully qualified pathname (error)
* 3) Valid handle
*/
- if ((pathname) &&
- (acpi_ns_valid_root_prefix (pathname[0]))) {
- /*
- * The path is fully qualified, just evaluate by name
- */
- status = acpi_ns_evaluate_by_name (pathname, &info);
- }
- else if (!handle) {
+ if ((pathname) && (acpi_ns_valid_root_prefix(pathname[0]))) {
+
+ /* The path is fully qualified, just evaluate by name */
+
+ info->prefix_node = NULL;
+ status = acpi_ns_evaluate(info);
+ } else if (!handle) {
/*
- * A handle is optional iff a fully qualified pathname
- * is specified. Since we've already handled fully
- * qualified names above, this is an error
+ * A handle is optional iff a fully qualified pathname is specified.
+ * Since we've already handled fully qualified names above, this is
+ * an error
*/
if (!pathname) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "Both Handle and Pathname are NULL\n"));
- }
- else {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
- "Handle is NULL and Pathname is relative\n"));
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Both Handle and Pathname are NULL"));
+ } else {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Null Handle with relative pathname [%s]",
+ pathname));
}
status = AE_BAD_PARAMETER;
- }
- else {
- /*
- * We get here if we have a handle -- and if we have a
- * pathname it is relative. The handle will be validated
- * in the lower procedures
- */
- if (!pathname) {
- /*
- * The null pathname case means the handle is for
- * the actual object to be evaluated
- */
- status = acpi_ns_evaluate_by_handle (&info);
- }
- else {
- /*
- * Both a Handle and a relative Pathname
- */
- status = acpi_ns_evaluate_relative (pathname, &info);
- }
- }
+ } else {
+ /* We have a namespace a node and a possible relative path */
+ status = acpi_ns_evaluate(info);
+ }
/*
* If we are expecting a return value, and all went well above,
* copy the return value to an external object.
*/
if (return_buffer) {
- if (!info.return_object) {
+ if (!info->return_object) {
return_buffer->length = 0;
- }
- else {
- if (ACPI_GET_DESCRIPTOR_TYPE (info.return_object) == ACPI_DESC_TYPE_NAMED) {
+ } else {
+ if (ACPI_GET_DESCRIPTOR_TYPE(info->return_object) ==
+ ACPI_DESC_TYPE_NAMED) {
/*
* If we received a NS Node as a return object, this means that
* the object we are evaluating has nothing interesting to
* support for various types at a later date if necessary.
*/
status = AE_TYPE;
- info.return_object = NULL; /* No need to delete a NS Node */
+ info->return_object = NULL; /* No need to delete a NS Node */
return_buffer->length = 0;
}
- if (ACPI_SUCCESS (status)) {
- /*
- * Find out how large a buffer is needed
- * to contain the returned object
- */
- status = acpi_ut_get_object_size (info.return_object,
- &buffer_space_needed);
- if (ACPI_SUCCESS (status)) {
+ if (ACPI_SUCCESS(status)) {
+
+ /* Get the size of the returned object */
+
+ status =
+ acpi_ut_get_object_size(info->return_object,
+ &buffer_space_needed);
+ if (ACPI_SUCCESS(status)) {
+
/* Validate/Allocate/Clear caller buffer */
- status = acpi_ut_initialize_buffer (return_buffer, buffer_space_needed);
- if (ACPI_FAILURE (status)) {
- /*
- * Caller's buffer is too small or a new one can't be allocated
- */
- ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
- "Needed buffer size %X, %s\n",
- (u32) buffer_space_needed,
- acpi_format_exception (status)));
- }
- else {
+ status =
+ acpi_ut_initialize_buffer
+ (return_buffer,
+ buffer_space_needed);
+ if (ACPI_FAILURE(status)) {
/*
- * We have enough space for the object, build it
+ * Caller's buffer is too small or a new one can't
+ * be allocated
*/
- status = acpi_ut_copy_iobject_to_eobject (info.return_object,
- return_buffer);
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Needed buffer size %X, %s\n",
+ (u32)
+ buffer_space_needed,
+ acpi_format_exception
+ (status)));
+ } else {
+ /* We have enough space for the object, build it */
+
+ status =
+ acpi_ut_copy_iobject_to_eobject
+ (info->return_object,
+ return_buffer);
}
}
}
}
}
- if (info.return_object) {
+ if (info->return_object) {
/*
- * Delete the internal return object. NOTE: Interpreter
- * must be locked to avoid race condition.
+ * Delete the internal return object. NOTE: Interpreter must be
+ * locked to avoid race condition.
*/
- status2 = acpi_ex_enter_interpreter ();
- if (ACPI_SUCCESS (status2)) {
- /*
- * Delete the internal return object. (Or at least
- * decrement the reference count by one)
- */
- acpi_ut_remove_reference (info.return_object);
- acpi_ex_exit_interpreter ();
+ status2 = acpi_ex_enter_interpreter();
+ if (ACPI_SUCCESS(status2)) {
+
+ /* Remove one reference on the return object (should delete it) */
+
+ acpi_ut_remove_reference(info->return_object);
+ acpi_ex_exit_interpreter();
}
}
- /*
- * Free the input parameter list (if we created one),
- */
- if (info.parameters) {
+ cleanup:
+
+ /* Free the input parameter list (if we created one) */
+
+ if (info->parameters) {
+
/* Free the allocated parameter block */
- acpi_ut_delete_internal_object_list (info.parameters);
+ acpi_ut_delete_internal_object_list(info->parameters);
}
- return_ACPI_STATUS (status);
+ ACPI_FREE(info);
+ return_ACPI_STATUS(status);
}
+ACPI_EXPORT_SYMBOL(acpi_evaluate_object)
/*******************************************************************************
*
* function, etc.
*
******************************************************************************/
-
acpi_status
-acpi_walk_namespace (
- acpi_object_type type,
- acpi_handle start_object,
- u32 max_depth,
- acpi_walk_callback user_function,
- void *context,
- void **return_value)
+acpi_walk_namespace(acpi_object_type type,
+ acpi_handle start_object,
+ u32 max_depth,
+ acpi_walk_callback user_function,
+ void *context, void **return_value)
{
- acpi_status status;
-
-
- ACPI_FUNCTION_TRACE ("acpi_walk_namespace");
+ acpi_status status;
+ ACPI_FUNCTION_TRACE(acpi_walk_namespace);
/* Parameter validation */
- if ((type > ACPI_TYPE_EXTERNAL_MAX) ||
- (!max_depth) ||
- (!user_function)) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ if ((type > ACPI_TYPE_LOCAL_MAX) || (!max_depth) || (!user_function)) {
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* to the user function - since this function
* must be allowed to make Acpi calls itself.
*/
- 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);
}
- status = acpi_ns_walk_namespace (type, start_object, max_depth, ACPI_NS_WALK_UNLOCK,
- user_function, context, return_value);
+ status = acpi_ns_walk_namespace(type, start_object, max_depth,
+ ACPI_NS_WALK_UNLOCK,
+ user_function, context, return_value);
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS (status);
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ return_ACPI_STATUS(status);
}
+ACPI_EXPORT_SYMBOL(acpi_walk_namespace)
/*******************************************************************************
*
* on that.
*
******************************************************************************/
-
static acpi_status
-acpi_ns_get_device_callback (
- acpi_handle obj_handle,
- u32 nesting_level,
- void *context,
- void **return_value)
+acpi_ns_get_device_callback(acpi_handle obj_handle,
+ u32 nesting_level,
+ void *context, void **return_value)
{
- struct acpi_get_devices_info *info = context;
- acpi_status status;
- struct acpi_namespace_node *node;
- u32 flags;
- struct acpi_device_id hid;
+ struct acpi_get_devices_info *info = context;
+ acpi_status status;
+ struct acpi_namespace_node *node;
+ u32 flags;
+ struct acpi_device_id hid;
struct acpi_compatible_id_list *cid;
- acpi_native_uint i;
-
+ acpi_native_uint i;
- status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
return (status);
}
- node = acpi_ns_map_handle_to_node (obj_handle);
- status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
+ node = acpi_ns_map_handle_to_node(obj_handle);
+ status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
return (status);
}
/* Run _STA to determine if device is present */
- status = acpi_ut_execute_STA (node, &flags);
- if (ACPI_FAILURE (status)) {
+ status = acpi_ut_execute_STA(node, &flags);
+ if (ACPI_FAILURE(status)) {
return (AE_CTRL_DEPTH);
}
- if (!(flags & 0x01)) {
- /* Don't return at the device or children of the device if not there */
+ if (!(flags & ACPI_STA_DEVICE_PRESENT)) {
+
+ /* Don't examine children of the device if not present */
return (AE_CTRL_DEPTH);
}
/* Filter based on device HID & CID */
if (info->hid != NULL) {
- status = acpi_ut_execute_HID (node, &hid);
+ status = acpi_ut_execute_HID(node, &hid);
if (status == AE_NOT_FOUND) {
return (AE_OK);
- }
- else if (ACPI_FAILURE (status)) {
+ } else if (ACPI_FAILURE(status)) {
return (AE_CTRL_DEPTH);
}
- if (ACPI_STRNCMP (hid.value, info->hid, sizeof (hid.value)) != 0) {
+ if (ACPI_STRNCMP(hid.value, info->hid, sizeof(hid.value)) != 0) {
+
/* Get the list of Compatible IDs */
- status = acpi_ut_execute_CID (node, &cid);
+ status = acpi_ut_execute_CID(node, &cid);
if (status == AE_NOT_FOUND) {
return (AE_OK);
- }
- else if (ACPI_FAILURE (status)) {
+ } else if (ACPI_FAILURE(status)) {
return (AE_CTRL_DEPTH);
}
/* Walk the CID list */
for (i = 0; i < cid->count; i++) {
- if (ACPI_STRNCMP (cid->id[i].value, info->hid,
- sizeof (struct acpi_compatible_id)) != 0) {
- ACPI_MEM_FREE (cid);
+ if (ACPI_STRNCMP(cid->id[i].value, info->hid,
+ sizeof(struct
+ acpi_compatible_id)) !=
+ 0) {
+ ACPI_FREE(cid);
return (AE_OK);
}
}
- ACPI_MEM_FREE (cid);
+ ACPI_FREE(cid);
}
}
- status = info->user_function (obj_handle, nesting_level, info->context, return_value);
+ status = info->user_function(obj_handle, nesting_level, info->context,
+ return_value);
return (status);
}
-
/*******************************************************************************
*
* FUNCTION: acpi_get_devices
******************************************************************************/
acpi_status
-acpi_get_devices (
- char *HID,
- acpi_walk_callback user_function,
- void *context,
- void **return_value)
+acpi_get_devices(char *HID,
+ acpi_walk_callback user_function,
+ void *context, void **return_value)
{
- acpi_status status;
- struct acpi_get_devices_info info;
-
-
- ACPI_FUNCTION_TRACE ("acpi_get_devices");
+ acpi_status status;
+ struct acpi_get_devices_info info;
+ ACPI_FUNCTION_TRACE(acpi_get_devices);
/* Parameter validation */
if (!user_function) {
- return_ACPI_STATUS (AE_BAD_PARAMETER);
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*
* We're going to call their callback from OUR callback, so we need
* to know what it is, and their context parameter.
*/
- info.context = context;
+ info.hid = HID;
+ info.context = context;
info.user_function = user_function;
- info.hid = HID;
/*
* Lock the namespace around the walk.
* to the user function - since this function
* must be allowed to make Acpi calls itself.
*/
- 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);
}
- status = acpi_ns_walk_namespace (ACPI_TYPE_DEVICE,
- ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
- ACPI_NS_WALK_UNLOCK,
- acpi_ns_get_device_callback, &info,
- return_value);
+ status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK,
+ acpi_ns_get_device_callback, &info,
+ return_value);
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
- return_ACPI_STATUS (status);
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+ return_ACPI_STATUS(status);
}
+ACPI_EXPORT_SYMBOL(acpi_get_devices)
/*******************************************************************************
*
* DESCRIPTION: Attach arbitrary data and handler to a namespace node.
*
******************************************************************************/
-
acpi_status
-acpi_attach_data (
- acpi_handle obj_handle,
- acpi_object_handler handler,
- void *data)
+acpi_attach_data(acpi_handle obj_handle,
+ acpi_object_handler handler, void *data)
{
- struct acpi_namespace_node *node;
- acpi_status status;
-
+ struct acpi_namespace_node *node;
+ acpi_status status;
/* Parameter validation */
- if (!obj_handle ||
- !handler ||
- !data) {
+ if (!obj_handle || !handler || !data) {
return (AE_BAD_PARAMETER);
}
- status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert and validate the handle */
- node = acpi_ns_map_handle_to_node (obj_handle);
+ node = acpi_ns_map_handle_to_node(obj_handle);
if (!node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
- status = acpi_ns_attach_data (node, handler, data);
+ status = acpi_ns_attach_data(node, handler, data);
-unlock_and_exit:
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+ unlock_and_exit:
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
+ACPI_EXPORT_SYMBOL(acpi_attach_data)
/*******************************************************************************
*
* DESCRIPTION: Remove data that was previously attached to a node.
*
******************************************************************************/
-
acpi_status
-acpi_detach_data (
- acpi_handle obj_handle,
- acpi_object_handler handler)
+acpi_detach_data(acpi_handle obj_handle, acpi_object_handler handler)
{
- struct acpi_namespace_node *node;
- acpi_status status;
-
+ struct acpi_namespace_node *node;
+ acpi_status status;
/* Parameter validation */
- if (!obj_handle ||
- !handler) {
+ if (!obj_handle || !handler) {
return (AE_BAD_PARAMETER);
}
- status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert and validate the handle */
- node = acpi_ns_map_handle_to_node (obj_handle);
+ node = acpi_ns_map_handle_to_node(obj_handle);
if (!node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
- status = acpi_ns_detach_data (node, handler);
+ status = acpi_ns_detach_data(node, handler);
-unlock_and_exit:
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+ unlock_and_exit:
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
+ACPI_EXPORT_SYMBOL(acpi_detach_data)
/*******************************************************************************
*
* DESCRIPTION: Retrieve data that was previously attached to a namespace node.
*
******************************************************************************/
-
acpi_status
-acpi_get_data (
- acpi_handle obj_handle,
- acpi_object_handler handler,
- void **data)
+acpi_get_data(acpi_handle obj_handle, acpi_object_handler handler, void **data)
{
- struct acpi_namespace_node *node;
- acpi_status status;
-
+ struct acpi_namespace_node *node;
+ acpi_status status;
/* Parameter validation */
- if (!obj_handle ||
- !handler ||
- !data) {
+ if (!obj_handle || !handler || !data) {
return (AE_BAD_PARAMETER);
}
- status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE);
- if (ACPI_FAILURE (status)) {
+ status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+ if (ACPI_FAILURE(status)) {
return (status);
}
/* Convert and validate the handle */
- node = acpi_ns_map_handle_to_node (obj_handle);
+ node = acpi_ns_map_handle_to_node(obj_handle);
if (!node) {
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
- status = acpi_ns_get_attached_data (node, handler, data);
+ status = acpi_ns_get_attached_data(node, handler, data);
-unlock_and_exit:
- (void) acpi_ut_release_mutex (ACPI_MTX_NAMESPACE);
+ unlock_and_exit:
+ (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
return (status);
}
-
+ACPI_EXPORT_SYMBOL(acpi_get_data)
git://git.onelab.eu / linux-2.6.git / blobdiff