1 /******************************************************************************
2 *
3 * Module Name: nsutils - Utilities for accessing ACPI namespace, accessing
4 * parents and siblings and Scope manipulation
5 *
6 *****************************************************************************/
7
8 /*
9 * Copyright (C) 2000 - 2015, Intel Corp.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions, and the following disclaimer,
17 * without modification.
18 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
19 * substantially similar to the "NO WARRANTY" disclaimer below
20 * ("Disclaimer") and any redistribution must be conditioned upon
21 * including a substantially similar Disclaimer requirement for further
22 * binary redistribution.
23 * 3. Neither the names of the above-listed copyright holders nor the names
24 * of any contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * Alternatively, this software may be distributed under the terms of the
28 * GNU General Public License ("GPL") version 2 as published by the Free
29 * Software Foundation.
30 *
31 * NO WARRANTY
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
35 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
36 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
41 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
42 * POSSIBILITY OF SUCH DAMAGES.
43 */
44
45 #include <acpi/acpi.h>
46 #include "accommon.h"
47 #include "acnamesp.h"
48 #include "amlcode.h"
49
50 #define _COMPONENT ACPI_NAMESPACE
51 ACPI_MODULE_NAME("nsutils")
52
53 /* Local prototypes */
54 #ifdef ACPI_OBSOLETE_FUNCTIONS
55 acpi_name acpi_ns_find_parent_name(struct acpi_namespace_node *node_to_search);
56 #endif
57
58 /*******************************************************************************
59 *
60 * FUNCTION: acpi_ns_print_node_pathname
61 *
62 * PARAMETERS: node - Object
63 * message - Prefix message
64 *
65 * DESCRIPTION: Print an object's full namespace pathname
66 * Manages allocation/freeing of a pathname buffer
67 *
68 ******************************************************************************/
69
70 void
acpi_ns_print_node_pathname(struct acpi_namespace_node * node,const char * message)71 acpi_ns_print_node_pathname(struct acpi_namespace_node *node,
72 const char *message)
73 {
74 struct acpi_buffer buffer;
75 acpi_status status;
76
77 if (!node) {
78 acpi_os_printf("[NULL NAME]");
79 return;
80 }
81
82 /* Convert handle to full pathname and print it (with supplied message) */
83
84 buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
85
86 status = acpi_ns_handle_to_pathname(node, &buffer, TRUE);
87 if (ACPI_SUCCESS(status)) {
88 if (message) {
89 acpi_os_printf("%s ", message);
90 }
91
92 acpi_os_printf("[%s] (Node %p)", (char *)buffer.pointer, node);
93 ACPI_FREE(buffer.pointer);
94 }
95 }
96
97 /*******************************************************************************
98 *
99 * FUNCTION: acpi_ns_get_type
100 *
101 * PARAMETERS: node - Parent Node to be examined
102 *
103 * RETURN: Type field from Node whose handle is passed
104 *
105 * DESCRIPTION: Return the type of a Namespace node
106 *
107 ******************************************************************************/
108
acpi_ns_get_type(struct acpi_namespace_node * node)109 acpi_object_type acpi_ns_get_type(struct acpi_namespace_node * node)
110 {
111 ACPI_FUNCTION_TRACE(ns_get_type);
112
113 if (!node) {
114 ACPI_WARNING((AE_INFO, "Null Node parameter"));
115 return_UINT8(ACPI_TYPE_ANY);
116 }
117
118 return_UINT8(node->type);
119 }
120
121 /*******************************************************************************
122 *
123 * FUNCTION: acpi_ns_local
124 *
125 * PARAMETERS: type - A namespace object type
126 *
127 * RETURN: LOCAL if names must be found locally in objects of the
128 * passed type, 0 if enclosing scopes should be searched
129 *
130 * DESCRIPTION: Returns scope rule for the given object type.
131 *
132 ******************************************************************************/
133
acpi_ns_local(acpi_object_type type)134 u32 acpi_ns_local(acpi_object_type type)
135 {
136 ACPI_FUNCTION_TRACE(ns_local);
137
138 if (!acpi_ut_valid_object_type(type)) {
139
140 /* Type code out of range */
141
142 ACPI_WARNING((AE_INFO, "Invalid Object Type 0x%X", type));
143 return_UINT32(ACPI_NS_NORMAL);
144 }
145
146 return_UINT32(acpi_gbl_ns_properties[type] & ACPI_NS_LOCAL);
147 }
148
149 /*******************************************************************************
150 *
151 * FUNCTION: acpi_ns_get_internal_name_length
152 *
153 * PARAMETERS: info - Info struct initialized with the
154 * external name pointer.
155 *
156 * RETURN: None
157 *
158 * DESCRIPTION: Calculate the length of the internal (AML) namestring
159 * corresponding to the external (ASL) namestring.
160 *
161 ******************************************************************************/
162
acpi_ns_get_internal_name_length(struct acpi_namestring_info * info)163 void acpi_ns_get_internal_name_length(struct acpi_namestring_info *info)
164 {
165 const char *next_external_char;
166 u32 i;
167
168 ACPI_FUNCTION_ENTRY();
169
170 next_external_char = info->external_name;
171 info->num_carats = 0;
172 info->num_segments = 0;
173 info->fully_qualified = FALSE;
174
175 /*
176 * For the internal name, the required length is 4 bytes per segment, plus
177 * 1 each for root_prefix, multi_name_prefix_op, segment count, trailing null
178 * (which is not really needed, but no there's harm in putting it there)
179 *
180 * strlen() + 1 covers the first name_seg, which has no path separator
181 */
182 if (ACPI_IS_ROOT_PREFIX(*next_external_char)) {
183 info->fully_qualified = TRUE;
184 next_external_char++;
185
186 /* Skip redundant root_prefix, like \\_SB.PCI0.SBRG.EC0 */
187
188 while (ACPI_IS_ROOT_PREFIX(*next_external_char)) {
189 next_external_char++;
190 }
191 } else {
192 /* Handle Carat prefixes */
193
194 while (ACPI_IS_PARENT_PREFIX(*next_external_char)) {
195 info->num_carats++;
196 next_external_char++;
197 }
198 }
199
200 /*
201 * Determine the number of ACPI name "segments" by counting the number of
202 * path separators within the string. Start with one segment since the
203 * segment count is [(# separators) + 1], and zero separators is ok.
204 */
205 if (*next_external_char) {
206 info->num_segments = 1;
207 for (i = 0; next_external_char[i]; i++) {
208 if (ACPI_IS_PATH_SEPARATOR(next_external_char[i])) {
209 info->num_segments++;
210 }
211 }
212 }
213
214 info->length = (ACPI_NAME_SIZE * info->num_segments) +
215 4 + info->num_carats;
216
217 info->next_external_char = next_external_char;
218 }
219
220 /*******************************************************************************
221 *
222 * FUNCTION: acpi_ns_build_internal_name
223 *
224 * PARAMETERS: info - Info struct fully initialized
225 *
226 * RETURN: Status
227 *
228 * DESCRIPTION: Construct the internal (AML) namestring
229 * corresponding to the external (ASL) namestring.
230 *
231 ******************************************************************************/
232
acpi_ns_build_internal_name(struct acpi_namestring_info * info)233 acpi_status acpi_ns_build_internal_name(struct acpi_namestring_info *info)
234 {
235 u32 num_segments = info->num_segments;
236 char *internal_name = info->internal_name;
237 const char *external_name = info->next_external_char;
238 char *result = NULL;
239 u32 i;
240
241 ACPI_FUNCTION_TRACE(ns_build_internal_name);
242
243 /* Setup the correct prefixes, counts, and pointers */
244
245 if (info->fully_qualified) {
246 internal_name[0] = AML_ROOT_PREFIX;
247
248 if (num_segments <= 1) {
249 result = &internal_name[1];
250 } else if (num_segments == 2) {
251 internal_name[1] = AML_DUAL_NAME_PREFIX;
252 result = &internal_name[2];
253 } else {
254 internal_name[1] = AML_MULTI_NAME_PREFIX_OP;
255 internal_name[2] = (char)num_segments;
256 result = &internal_name[3];
257 }
258 } else {
259 /*
260 * Not fully qualified.
261 * Handle Carats first, then append the name segments
262 */
263 i = 0;
264 if (info->num_carats) {
265 for (i = 0; i < info->num_carats; i++) {
266 internal_name[i] = AML_PARENT_PREFIX;
267 }
268 }
269
270 if (num_segments <= 1) {
271 result = &internal_name[i];
272 } else if (num_segments == 2) {
273 internal_name[i] = AML_DUAL_NAME_PREFIX;
274 result = &internal_name[(acpi_size) i + 1];
275 } else {
276 internal_name[i] = AML_MULTI_NAME_PREFIX_OP;
277 internal_name[(acpi_size) i + 1] = (char)num_segments;
278 result = &internal_name[(acpi_size) i + 2];
279 }
280 }
281
282 /* Build the name (minus path separators) */
283
284 for (; num_segments; num_segments--) {
285 for (i = 0; i < ACPI_NAME_SIZE; i++) {
286 if (ACPI_IS_PATH_SEPARATOR(*external_name) ||
287 (*external_name == 0)) {
288
289 /* Pad the segment with underscore(s) if segment is short */
290
291 result[i] = '_';
292 } else {
293 /* Convert the character to uppercase and save it */
294
295 result[i] = (char)toupper((int)*external_name);
296 external_name++;
297 }
298 }
299
300 /* Now we must have a path separator, or the pathname is bad */
301
302 if (!ACPI_IS_PATH_SEPARATOR(*external_name) &&
303 (*external_name != 0)) {
304 return_ACPI_STATUS(AE_BAD_PATHNAME);
305 }
306
307 /* Move on the next segment */
308
309 external_name++;
310 result += ACPI_NAME_SIZE;
311 }
312
313 /* Terminate the string */
314
315 *result = 0;
316
317 if (info->fully_qualified) {
318 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
319 "Returning [%p] (abs) \"\\%s\"\n",
320 internal_name, internal_name));
321 } else {
322 ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Returning [%p] (rel) \"%s\"\n",
323 internal_name, internal_name));
324 }
325
326 return_ACPI_STATUS(AE_OK);
327 }
328
329 /*******************************************************************************
330 *
331 * FUNCTION: acpi_ns_internalize_name
332 *
333 * PARAMETERS: *external_name - External representation of name
334 * **Converted name - Where to return the resulting
335 * internal represention of the name
336 *
337 * RETURN: Status
338 *
339 * DESCRIPTION: Convert an external representation (e.g. "\_PR_.CPU0")
340 * to internal form (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
341 *
342 *******************************************************************************/
343
344 acpi_status
acpi_ns_internalize_name(const char * external_name,char ** converted_name)345 acpi_ns_internalize_name(const char *external_name, char **converted_name)
346 {
347 char *internal_name;
348 struct acpi_namestring_info info;
349 acpi_status status;
350
351 ACPI_FUNCTION_TRACE(ns_internalize_name);
352
353 if ((!external_name) || (*external_name == 0) || (!converted_name)) {
354 return_ACPI_STATUS(AE_BAD_PARAMETER);
355 }
356
357 /* Get the length of the new internal name */
358
359 info.external_name = external_name;
360 acpi_ns_get_internal_name_length(&info);
361
362 /* We need a segment to store the internal name */
363
364 internal_name = ACPI_ALLOCATE_ZEROED(info.length);
365 if (!internal_name) {
366 return_ACPI_STATUS(AE_NO_MEMORY);
367 }
368
369 /* Build the name */
370
371 info.internal_name = internal_name;
372 status = acpi_ns_build_internal_name(&info);
373 if (ACPI_FAILURE(status)) {
374 ACPI_FREE(internal_name);
375 return_ACPI_STATUS(status);
376 }
377
378 *converted_name = internal_name;
379 return_ACPI_STATUS(AE_OK);
380 }
381
382 /*******************************************************************************
383 *
384 * FUNCTION: acpi_ns_externalize_name
385 *
386 * PARAMETERS: internal_name_length - Lenth of the internal name below
387 * internal_name - Internal representation of name
388 * converted_name_length - Where the length is returned
389 * converted_name - Where the resulting external name
390 * is returned
391 *
392 * RETURN: Status
393 *
394 * DESCRIPTION: Convert internal name (e.g. 5c 2f 02 5f 50 52 5f 43 50 55 30)
395 * to its external (printable) form (e.g. "\_PR_.CPU0")
396 *
397 ******************************************************************************/
398
399 acpi_status
acpi_ns_externalize_name(u32 internal_name_length,const char * internal_name,u32 * converted_name_length,char ** converted_name)400 acpi_ns_externalize_name(u32 internal_name_length,
401 const char *internal_name,
402 u32 * converted_name_length, char **converted_name)
403 {
404 u32 names_index = 0;
405 u32 num_segments = 0;
406 u32 required_length;
407 u32 prefix_length = 0;
408 u32 i = 0;
409 u32 j = 0;
410
411 ACPI_FUNCTION_TRACE(ns_externalize_name);
412
413 if (!internal_name_length || !internal_name || !converted_name) {
414 return_ACPI_STATUS(AE_BAD_PARAMETER);
415 }
416
417 /* Check for a prefix (one '\' | one or more '^') */
418
419 switch (internal_name[0]) {
420 case AML_ROOT_PREFIX:
421
422 prefix_length = 1;
423 break;
424
425 case AML_PARENT_PREFIX:
426
427 for (i = 0; i < internal_name_length; i++) {
428 if (ACPI_IS_PARENT_PREFIX(internal_name[i])) {
429 prefix_length = i + 1;
430 } else {
431 break;
432 }
433 }
434
435 if (i == internal_name_length) {
436 prefix_length = i;
437 }
438
439 break;
440
441 default:
442
443 break;
444 }
445
446 /*
447 * Check for object names. Note that there could be 0-255 of these
448 * 4-byte elements.
449 */
450 if (prefix_length < internal_name_length) {
451 switch (internal_name[prefix_length]) {
452 case AML_MULTI_NAME_PREFIX_OP:
453
454 /* <count> 4-byte names */
455
456 names_index = prefix_length + 2;
457 num_segments = (u8)
458 internal_name[(acpi_size) prefix_length + 1];
459 break;
460
461 case AML_DUAL_NAME_PREFIX:
462
463 /* Two 4-byte names */
464
465 names_index = prefix_length + 1;
466 num_segments = 2;
467 break;
468
469 case 0:
470
471 /* null_name */
472
473 names_index = 0;
474 num_segments = 0;
475 break;
476
477 default:
478
479 /* one 4-byte name */
480
481 names_index = prefix_length;
482 num_segments = 1;
483 break;
484 }
485 }
486
487 /*
488 * Calculate the length of converted_name, which equals the length
489 * of the prefix, length of all object names, length of any required
490 * punctuation ('.') between object names, plus the NULL terminator.
491 */
492 required_length = prefix_length + (4 * num_segments) +
493 ((num_segments > 0) ? (num_segments - 1) : 0) + 1;
494
495 /*
496 * Check to see if we're still in bounds. If not, there's a problem
497 * with internal_name (invalid format).
498 */
499 if (required_length > internal_name_length) {
500 ACPI_ERROR((AE_INFO, "Invalid internal name"));
501 return_ACPI_STATUS(AE_BAD_PATHNAME);
502 }
503
504 /* Build the converted_name */
505
506 *converted_name = ACPI_ALLOCATE_ZEROED(required_length);
507 if (!(*converted_name)) {
508 return_ACPI_STATUS(AE_NO_MEMORY);
509 }
510
511 j = 0;
512
513 for (i = 0; i < prefix_length; i++) {
514 (*converted_name)[j++] = internal_name[i];
515 }
516
517 if (num_segments > 0) {
518 for (i = 0; i < num_segments; i++) {
519 if (i > 0) {
520 (*converted_name)[j++] = '.';
521 }
522
523 /* Copy and validate the 4-char name segment */
524
525 ACPI_MOVE_NAME(&(*converted_name)[j],
526 &internal_name[names_index]);
527 acpi_ut_repair_name(&(*converted_name)[j]);
528
529 j += ACPI_NAME_SIZE;
530 names_index += ACPI_NAME_SIZE;
531 }
532 }
533
534 if (converted_name_length) {
535 *converted_name_length = (u32) required_length;
536 }
537
538 return_ACPI_STATUS(AE_OK);
539 }
540
541 /*******************************************************************************
542 *
543 * FUNCTION: acpi_ns_validate_handle
544 *
545 * PARAMETERS: handle - Handle to be validated and typecast to a
546 * namespace node.
547 *
548 * RETURN: A pointer to a namespace node
549 *
550 * DESCRIPTION: Convert a namespace handle to a namespace node. Handles special
551 * cases for the root node.
552 *
553 * NOTE: Real integer handles would allow for more verification
554 * and keep all pointers within this subsystem - however this introduces
555 * more overhead and has not been necessary to this point. Drivers
556 * holding handles are typically notified before a node becomes invalid
557 * due to a table unload.
558 *
559 ******************************************************************************/
560
acpi_ns_validate_handle(acpi_handle handle)561 struct acpi_namespace_node *acpi_ns_validate_handle(acpi_handle handle)
562 {
563
564 ACPI_FUNCTION_ENTRY();
565
566 /* Parameter validation */
567
568 if ((!handle) || (handle == ACPI_ROOT_OBJECT)) {
569 return (acpi_gbl_root_node);
570 }
571
572 /* We can at least attempt to verify the handle */
573
574 if (ACPI_GET_DESCRIPTOR_TYPE(handle) != ACPI_DESC_TYPE_NAMED) {
575 return (NULL);
576 }
577
578 return (ACPI_CAST_PTR(struct acpi_namespace_node, handle));
579 }
580
581 /*******************************************************************************
582 *
583 * FUNCTION: acpi_ns_terminate
584 *
585 * PARAMETERS: none
586 *
587 * RETURN: none
588 *
589 * DESCRIPTION: free memory allocated for namespace and ACPI table storage.
590 *
591 ******************************************************************************/
592
acpi_ns_terminate(void)593 void acpi_ns_terminate(void)
594 {
595 acpi_status status;
596 union acpi_operand_object *prev;
597 union acpi_operand_object *next;
598
599 ACPI_FUNCTION_TRACE(ns_terminate);
600
601 /* Delete any module-level code blocks */
602
603 next = acpi_gbl_module_code_list;
604 while (next) {
605 prev = next;
606 next = next->method.mutex;
607 prev->method.mutex = NULL; /* Clear the Mutex (cheated) field */
608 acpi_ut_remove_reference(prev);
609 }
610
611 /*
612 * Free the entire namespace -- all nodes and all objects
613 * attached to the nodes
614 */
615 acpi_ns_delete_namespace_subtree(acpi_gbl_root_node);
616
617 /* Delete any objects attached to the root node */
618
619 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
620 if (ACPI_FAILURE(status)) {
621 return_VOID;
622 }
623
624 acpi_ns_delete_node(acpi_gbl_root_node);
625 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
626
627 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Namespace freed\n"));
628 return_VOID;
629 }
630
631 /*******************************************************************************
632 *
633 * FUNCTION: acpi_ns_opens_scope
634 *
635 * PARAMETERS: type - A valid namespace type
636 *
637 * RETURN: NEWSCOPE if the passed type "opens a name scope" according
638 * to the ACPI specification, else 0
639 *
640 ******************************************************************************/
641
acpi_ns_opens_scope(acpi_object_type type)642 u32 acpi_ns_opens_scope(acpi_object_type type)
643 {
644 ACPI_FUNCTION_ENTRY();
645
646 if (type > ACPI_TYPE_LOCAL_MAX) {
647
648 /* type code out of range */
649
650 ACPI_WARNING((AE_INFO, "Invalid Object Type 0x%X", type));
651 return (ACPI_NS_NORMAL);
652 }
653
654 return (((u32)acpi_gbl_ns_properties[type]) & ACPI_NS_NEWSCOPE);
655 }
656
657 /*******************************************************************************
658 *
659 * FUNCTION: acpi_ns_get_node
660 *
661 * PARAMETERS: *pathname - Name to be found, in external (ASL) format. The
662 * \ (backslash) and ^ (carat) prefixes, and the
663 * . (period) to separate segments are supported.
664 * prefix_node - Root of subtree to be searched, or NS_ALL for the
665 * root of the name space. If Name is fully
666 * qualified (first s8 is '\'), the passed value
667 * of Scope will not be accessed.
668 * flags - Used to indicate whether to perform upsearch or
669 * not.
670 * return_node - Where the Node is returned
671 *
672 * DESCRIPTION: Look up a name relative to a given scope and return the
673 * corresponding Node. NOTE: Scope can be null.
674 *
675 * MUTEX: Locks namespace
676 *
677 ******************************************************************************/
678
679 acpi_status
acpi_ns_get_node(struct acpi_namespace_node * prefix_node,const char * pathname,u32 flags,struct acpi_namespace_node ** return_node)680 acpi_ns_get_node(struct acpi_namespace_node *prefix_node,
681 const char *pathname,
682 u32 flags, struct acpi_namespace_node **return_node)
683 {
684 union acpi_generic_state scope_info;
685 acpi_status status;
686 char *internal_path;
687
688 ACPI_FUNCTION_TRACE_PTR(ns_get_node, ACPI_CAST_PTR(char, pathname));
689
690 /* Simplest case is a null pathname */
691
692 if (!pathname) {
693 *return_node = prefix_node;
694 if (!prefix_node) {
695 *return_node = acpi_gbl_root_node;
696 }
697 return_ACPI_STATUS(AE_OK);
698 }
699
700 /* Quick check for a reference to the root */
701
702 if (ACPI_IS_ROOT_PREFIX(pathname[0]) && (!pathname[1])) {
703 *return_node = acpi_gbl_root_node;
704 return_ACPI_STATUS(AE_OK);
705 }
706
707 /* Convert path to internal representation */
708
709 status = acpi_ns_internalize_name(pathname, &internal_path);
710 if (ACPI_FAILURE(status)) {
711 return_ACPI_STATUS(status);
712 }
713
714 /* Must lock namespace during lookup */
715
716 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
717 if (ACPI_FAILURE(status)) {
718 goto cleanup;
719 }
720
721 /* Setup lookup scope (search starting point) */
722
723 scope_info.scope.node = prefix_node;
724
725 /* Lookup the name in the namespace */
726
727 status = acpi_ns_lookup(&scope_info, internal_path, ACPI_TYPE_ANY,
728 ACPI_IMODE_EXECUTE,
729 (flags | ACPI_NS_DONT_OPEN_SCOPE), NULL,
730 return_node);
731 if (ACPI_FAILURE(status)) {
732 ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s, %s\n",
733 pathname, acpi_format_exception(status)));
734 }
735
736 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
737
738 cleanup:
739 ACPI_FREE(internal_path);
740 return_ACPI_STATUS(status);
741 }
742