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1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: dsmethod - Parser/Interpreter interface - control method parsing | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
9 | * All rights reserved. | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
18 | * substantially similar to the "NO WARRANTY" disclaimer below | |
19 | * ("Disclaimer") and any redistribution must be conditioned upon | |
20 | * including a substantially similar Disclaimer requirement for further | |
21 | * binary redistribution. | |
22 | * 3. Neither the names of the above-listed copyright holders nor the names | |
23 | * of any contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * Alternatively, this software may be distributed under the terms of the | |
27 | * GNU General Public License ("GPL") version 2 as published by the Free | |
28 | * Software Foundation. | |
29 | * | |
30 | * NO WARRANTY | |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
41 | * POSSIBILITY OF SUCH DAMAGES. | |
42 | */ | |
43 | ||
44 | ||
45 | #include <acpi/acpi.h> | |
46 | #include <acpi/acparser.h> | |
47 | #include <acpi/amlcode.h> | |
48 | #include <acpi/acdispat.h> | |
49 | #include <acpi/acinterp.h> | |
50 | #include <acpi/acnamesp.h> | |
51 | ||
52 | ||
53 | #define _COMPONENT ACPI_DISPATCHER | |
54 | ACPI_MODULE_NAME ("dsmethod") | |
55 | ||
56 | ||
57 | /******************************************************************************* | |
58 | * | |
59 | * FUNCTION: acpi_ds_parse_method | |
60 | * | |
61 | * PARAMETERS: obj_handle - Method node | |
62 | * | |
63 | * RETURN: Status | |
64 | * | |
65 | * DESCRIPTION: Call the parser and parse the AML that is associated with the | |
66 | * method. | |
67 | * | |
68 | * MUTEX: Assumes parser is locked | |
69 | * | |
70 | ******************************************************************************/ | |
71 | ||
72 | acpi_status | |
73 | acpi_ds_parse_method ( | |
74 | acpi_handle obj_handle) | |
75 | { | |
76 | acpi_status status; | |
77 | union acpi_operand_object *obj_desc; | |
78 | union acpi_parse_object *op; | |
79 | struct acpi_namespace_node *node; | |
80 | acpi_owner_id owner_id; | |
81 | struct acpi_walk_state *walk_state; | |
82 | ||
83 | ||
84 | ACPI_FUNCTION_TRACE_PTR ("ds_parse_method", obj_handle); | |
85 | ||
86 | ||
87 | /* Parameter Validation */ | |
88 | ||
89 | if (!obj_handle) { | |
90 | return_ACPI_STATUS (AE_NULL_ENTRY); | |
91 | } | |
92 | ||
93 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "**** Parsing [%4.4s] **** named_obj=%p\n", | |
94 | acpi_ut_get_node_name (obj_handle), obj_handle)); | |
95 | ||
96 | /* Extract the method object from the method Node */ | |
97 | ||
98 | node = (struct acpi_namespace_node *) obj_handle; | |
99 | obj_desc = acpi_ns_get_attached_object (node); | |
100 | if (!obj_desc) { | |
101 | return_ACPI_STATUS (AE_NULL_OBJECT); | |
102 | } | |
103 | ||
104 | /* Create a mutex for the method if there is a concurrency limit */ | |
105 | ||
106 | if ((obj_desc->method.concurrency != ACPI_INFINITE_CONCURRENCY) && | |
107 | (!obj_desc->method.semaphore)) { | |
108 | status = acpi_os_create_semaphore (obj_desc->method.concurrency, | |
109 | obj_desc->method.concurrency, | |
110 | &obj_desc->method.semaphore); | |
111 | if (ACPI_FAILURE (status)) { | |
112 | return_ACPI_STATUS (status); | |
113 | } | |
114 | } | |
115 | ||
116 | /* | |
117 | * Allocate a new parser op to be the root of the parsed | |
118 | * method tree | |
119 | */ | |
120 | op = acpi_ps_alloc_op (AML_METHOD_OP); | |
121 | if (!op) { | |
122 | return_ACPI_STATUS (AE_NO_MEMORY); | |
123 | } | |
124 | ||
125 | /* Init new op with the method name and pointer back to the Node */ | |
126 | ||
127 | acpi_ps_set_name (op, node->name.integer); | |
128 | op->common.node = node; | |
129 | ||
130 | /* | |
131 | * Get a new owner_id for objects created by this method. Namespace | |
132 | * objects (such as Operation Regions) can be created during the | |
133 | * first pass parse. | |
134 | */ | |
135 | owner_id = acpi_ut_allocate_owner_id (ACPI_OWNER_TYPE_METHOD); | |
136 | obj_desc->method.owning_id = owner_id; | |
137 | ||
138 | /* Create and initialize a new walk state */ | |
139 | ||
140 | walk_state = acpi_ds_create_walk_state (owner_id, NULL, NULL, NULL); | |
141 | if (!walk_state) { | |
142 | return_ACPI_STATUS (AE_NO_MEMORY); | |
143 | } | |
144 | ||
145 | status = acpi_ds_init_aml_walk (walk_state, op, node, | |
146 | obj_desc->method.aml_start, | |
147 | obj_desc->method.aml_length, NULL, 1); | |
148 | if (ACPI_FAILURE (status)) { | |
149 | acpi_ds_delete_walk_state (walk_state); | |
150 | return_ACPI_STATUS (status); | |
151 | } | |
152 | ||
153 | /* | |
154 | * Parse the method, first pass | |
155 | * | |
156 | * The first pass load is where newly declared named objects are | |
157 | * added into the namespace. Actual evaluation of | |
158 | * the named objects (what would be called a "second | |
159 | * pass") happens during the actual execution of the | |
160 | * method so that operands to the named objects can | |
161 | * take on dynamic run-time values. | |
162 | */ | |
163 | status = acpi_ps_parse_aml (walk_state); | |
164 | if (ACPI_FAILURE (status)) { | |
165 | return_ACPI_STATUS (status); | |
166 | } | |
167 | ||
168 | ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, | |
169 | "**** [%4.4s] Parsed **** named_obj=%p Op=%p\n", | |
170 | acpi_ut_get_node_name (obj_handle), obj_handle, op)); | |
171 | ||
172 | acpi_ps_delete_parse_tree (op); | |
173 | return_ACPI_STATUS (status); | |
174 | } | |
175 | ||
176 | ||
177 | /******************************************************************************* | |
178 | * | |
179 | * FUNCTION: acpi_ds_begin_method_execution | |
180 | * | |
181 | * PARAMETERS: method_node - Node of the method | |
182 | * obj_desc - The method object | |
183 | * calling_method_node - Caller of this method (if non-null) | |
184 | * | |
185 | * RETURN: Status | |
186 | * | |
187 | * DESCRIPTION: Prepare a method for execution. Parses the method if necessary, | |
188 | * increments the thread count, and waits at the method semaphore | |
189 | * for clearance to execute. | |
190 | * | |
191 | ******************************************************************************/ | |
192 | ||
193 | acpi_status | |
194 | acpi_ds_begin_method_execution ( | |
195 | struct acpi_namespace_node *method_node, | |
196 | union acpi_operand_object *obj_desc, | |
197 | struct acpi_namespace_node *calling_method_node) | |
198 | { | |
199 | acpi_status status = AE_OK; | |
200 | ||
201 | ||
202 | ACPI_FUNCTION_TRACE_PTR ("ds_begin_method_execution", method_node); | |
203 | ||
204 | ||
205 | if (!method_node) { | |
206 | return_ACPI_STATUS (AE_NULL_ENTRY); | |
207 | } | |
208 | ||
209 | /* | |
210 | * If there is a concurrency limit on this method, we need to | |
211 | * obtain a unit from the method semaphore. | |
212 | */ | |
213 | if (obj_desc->method.semaphore) { | |
214 | /* | |
215 | * Allow recursive method calls, up to the reentrancy/concurrency | |
216 | * limit imposed by the SERIALIZED rule and the sync_level method | |
217 | * parameter. | |
218 | * | |
219 | * The point of this code is to avoid permanently blocking a | |
220 | * thread that is making recursive method calls. | |
221 | */ | |
222 | if (method_node == calling_method_node) { | |
223 | if (obj_desc->method.thread_count >= obj_desc->method.concurrency) { | |
224 | return_ACPI_STATUS (AE_AML_METHOD_LIMIT); | |
225 | } | |
226 | } | |
227 | ||
228 | /* | |
229 | * Get a unit from the method semaphore. This releases the | |
230 | * interpreter if we block | |
231 | */ | |
232 | status = acpi_ex_system_wait_semaphore (obj_desc->method.semaphore, | |
233 | ACPI_WAIT_FOREVER); | |
234 | } | |
235 | ||
236 | /* | |
237 | * Increment the method parse tree thread count since it has been | |
238 | * reentered one more time (even if it is the same thread) | |
239 | */ | |
240 | obj_desc->method.thread_count++; | |
241 | return_ACPI_STATUS (status); | |
242 | } | |
243 | ||
244 | ||
245 | /******************************************************************************* | |
246 | * | |
247 | * FUNCTION: acpi_ds_call_control_method | |
248 | * | |
249 | * PARAMETERS: Thread - Info for this thread | |
250 | * this_walk_state - Current walk state | |
251 | * Op - Current Op to be walked | |
252 | * | |
253 | * RETURN: Status | |
254 | * | |
255 | * DESCRIPTION: Transfer execution to a called control method | |
256 | * | |
257 | ******************************************************************************/ | |
258 | ||
259 | acpi_status | |
260 | acpi_ds_call_control_method ( | |
261 | struct acpi_thread_state *thread, | |
262 | struct acpi_walk_state *this_walk_state, | |
263 | union acpi_parse_object *op) | |
264 | { | |
265 | acpi_status status; | |
266 | struct acpi_namespace_node *method_node; | |
267 | struct acpi_walk_state *next_walk_state; | |
268 | union acpi_operand_object *obj_desc; | |
269 | struct acpi_parameter_info info; | |
270 | u32 i; | |
271 | ||
272 | ||
273 | ACPI_FUNCTION_TRACE_PTR ("ds_call_control_method", this_walk_state); | |
274 | ||
275 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Execute method %p, currentstate=%p\n", | |
276 | this_walk_state->prev_op, this_walk_state)); | |
277 | ||
278 | /* | |
279 | * Get the namespace entry for the control method we are about to call | |
280 | */ | |
281 | method_node = this_walk_state->method_call_node; | |
282 | if (!method_node) { | |
283 | return_ACPI_STATUS (AE_NULL_ENTRY); | |
284 | } | |
285 | ||
286 | obj_desc = acpi_ns_get_attached_object (method_node); | |
287 | if (!obj_desc) { | |
288 | return_ACPI_STATUS (AE_NULL_OBJECT); | |
289 | } | |
290 | ||
291 | obj_desc->method.owning_id = acpi_ut_allocate_owner_id (ACPI_OWNER_TYPE_METHOD); | |
292 | ||
293 | /* Init for new method, wait on concurrency semaphore */ | |
294 | ||
295 | status = acpi_ds_begin_method_execution (method_node, obj_desc, | |
296 | this_walk_state->method_node); | |
297 | if (ACPI_FAILURE (status)) { | |
298 | return_ACPI_STATUS (status); | |
299 | } | |
300 | ||
301 | if (!(obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY)) { | |
302 | /* 1) Parse: Create a new walk state for the preempting walk */ | |
303 | ||
304 | next_walk_state = acpi_ds_create_walk_state (obj_desc->method.owning_id, | |
305 | op, obj_desc, NULL); | |
306 | if (!next_walk_state) { | |
307 | return_ACPI_STATUS (AE_NO_MEMORY); | |
308 | } | |
309 | ||
310 | /* Create and init a Root Node */ | |
311 | ||
312 | op = acpi_ps_create_scope_op (); | |
313 | if (!op) { | |
314 | status = AE_NO_MEMORY; | |
315 | goto cleanup; | |
316 | } | |
317 | ||
318 | status = acpi_ds_init_aml_walk (next_walk_state, op, method_node, | |
319 | obj_desc->method.aml_start, obj_desc->method.aml_length, | |
320 | NULL, 1); | |
321 | if (ACPI_FAILURE (status)) { | |
322 | acpi_ds_delete_walk_state (next_walk_state); | |
323 | goto cleanup; | |
324 | } | |
325 | ||
326 | /* Begin AML parse */ | |
327 | ||
328 | status = acpi_ps_parse_aml (next_walk_state); | |
329 | acpi_ps_delete_parse_tree (op); | |
330 | } | |
331 | ||
332 | /* 2) Execute: Create a new state for the preempting walk */ | |
333 | ||
334 | next_walk_state = acpi_ds_create_walk_state (obj_desc->method.owning_id, | |
335 | NULL, obj_desc, thread); | |
336 | if (!next_walk_state) { | |
337 | status = AE_NO_MEMORY; | |
338 | goto cleanup; | |
339 | } | |
340 | /* | |
341 | * The resolved arguments were put on the previous walk state's operand | |
342 | * stack. Operands on the previous walk state stack always | |
343 | * start at index 0. | |
344 | * Null terminate the list of arguments | |
345 | */ | |
346 | this_walk_state->operands [this_walk_state->num_operands] = NULL; | |
347 | ||
348 | info.parameters = &this_walk_state->operands[0]; | |
349 | info.parameter_type = ACPI_PARAM_ARGS; | |
350 | ||
351 | status = acpi_ds_init_aml_walk (next_walk_state, NULL, method_node, | |
352 | obj_desc->method.aml_start, obj_desc->method.aml_length, | |
353 | &info, 3); | |
354 | if (ACPI_FAILURE (status)) { | |
355 | goto cleanup; | |
356 | } | |
357 | ||
358 | /* | |
359 | * Delete the operands on the previous walkstate operand stack | |
360 | * (they were copied to new objects) | |
361 | */ | |
362 | for (i = 0; i < obj_desc->method.param_count; i++) { | |
363 | acpi_ut_remove_reference (this_walk_state->operands [i]); | |
364 | this_walk_state->operands [i] = NULL; | |
365 | } | |
366 | ||
367 | /* Clear the operand stack */ | |
368 | ||
369 | this_walk_state->num_operands = 0; | |
370 | ||
371 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
372 | "Starting nested execution, newstate=%p\n", next_walk_state)); | |
373 | ||
374 | if (obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) { | |
375 | status = obj_desc->method.implementation (next_walk_state); | |
376 | return_ACPI_STATUS (status); | |
377 | } | |
378 | ||
379 | return_ACPI_STATUS (AE_OK); | |
380 | ||
381 | ||
382 | /* On error, we must delete the new walk state */ | |
383 | ||
384 | cleanup: | |
385 | if (next_walk_state && (next_walk_state->method_desc)) { | |
386 | /* Decrement the thread count on the method parse tree */ | |
387 | ||
388 | next_walk_state->method_desc->method.thread_count--; | |
389 | } | |
390 | (void) acpi_ds_terminate_control_method (next_walk_state); | |
391 | acpi_ds_delete_walk_state (next_walk_state); | |
392 | return_ACPI_STATUS (status); | |
393 | } | |
394 | ||
395 | ||
396 | /******************************************************************************* | |
397 | * | |
398 | * FUNCTION: acpi_ds_restart_control_method | |
399 | * | |
400 | * PARAMETERS: walk_state - State for preempted method (caller) | |
401 | * return_desc - Return value from the called method | |
402 | * | |
403 | * RETURN: Status | |
404 | * | |
405 | * DESCRIPTION: Restart a method that was preempted by another (nested) method | |
406 | * invocation. Handle the return value (if any) from the callee. | |
407 | * | |
408 | ******************************************************************************/ | |
409 | ||
410 | acpi_status | |
411 | acpi_ds_restart_control_method ( | |
412 | struct acpi_walk_state *walk_state, | |
413 | union acpi_operand_object *return_desc) | |
414 | { | |
415 | acpi_status status; | |
416 | ||
417 | ||
418 | ACPI_FUNCTION_TRACE_PTR ("ds_restart_control_method", walk_state); | |
419 | ||
420 | ||
421 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
422 | "****Restart [%4.4s] Op %p return_value_from_callee %p\n", | |
423 | (char *) &walk_state->method_node->name, walk_state->method_call_op, | |
424 | return_desc)); | |
425 | ||
426 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
427 | " return_from_this_method_used?=%X res_stack %p Walk %p\n", | |
428 | walk_state->return_used, | |
429 | walk_state->results, walk_state)); | |
430 | ||
431 | /* Did the called method return a value? */ | |
432 | ||
433 | if (return_desc) { | |
434 | /* Are we actually going to use the return value? */ | |
435 | ||
436 | if (walk_state->return_used) { | |
437 | /* Save the return value from the previous method */ | |
438 | ||
439 | status = acpi_ds_result_push (return_desc, walk_state); | |
440 | if (ACPI_FAILURE (status)) { | |
441 | acpi_ut_remove_reference (return_desc); | |
442 | return_ACPI_STATUS (status); | |
443 | } | |
444 | ||
445 | /* | |
446 | * Save as THIS method's return value in case it is returned | |
447 | * immediately to yet another method | |
448 | */ | |
449 | walk_state->return_desc = return_desc; | |
450 | } | |
451 | ||
452 | /* | |
453 | * The following code is the | |
454 | * optional support for a so-called "implicit return". Some AML code | |
455 | * assumes that the last value of the method is "implicitly" returned | |
456 | * to the caller. Just save the last result as the return value. | |
457 | * NOTE: this is optional because the ASL language does not actually | |
458 | * support this behavior. | |
459 | */ | |
460 | else if (!acpi_ds_do_implicit_return (return_desc, walk_state, FALSE)) { | |
461 | /* | |
462 | * Delete the return value if it will not be used by the | |
463 | * calling method | |
464 | */ | |
465 | acpi_ut_remove_reference (return_desc); | |
466 | } | |
467 | } | |
468 | ||
469 | return_ACPI_STATUS (AE_OK); | |
470 | } | |
471 | ||
472 | ||
473 | /******************************************************************************* | |
474 | * | |
475 | * FUNCTION: acpi_ds_terminate_control_method | |
476 | * | |
477 | * PARAMETERS: walk_state - State of the method | |
478 | * | |
479 | * RETURN: Status | |
480 | * | |
481 | * DESCRIPTION: Terminate a control method. Delete everything that the method | |
482 | * created, delete all locals and arguments, and delete the parse | |
483 | * tree if requested. | |
484 | * | |
485 | ******************************************************************************/ | |
486 | ||
487 | acpi_status | |
488 | acpi_ds_terminate_control_method ( | |
489 | struct acpi_walk_state *walk_state) | |
490 | { | |
491 | union acpi_operand_object *obj_desc; | |
492 | struct acpi_namespace_node *method_node; | |
493 | acpi_status status; | |
494 | ||
495 | ||
496 | ACPI_FUNCTION_TRACE_PTR ("ds_terminate_control_method", walk_state); | |
497 | ||
498 | ||
499 | if (!walk_state) { | |
500 | return (AE_BAD_PARAMETER); | |
501 | } | |
502 | ||
503 | /* The current method object was saved in the walk state */ | |
504 | ||
505 | obj_desc = walk_state->method_desc; | |
506 | if (!obj_desc) { | |
507 | return_ACPI_STATUS (AE_OK); | |
508 | } | |
509 | ||
510 | /* Delete all arguments and locals */ | |
511 | ||
512 | acpi_ds_method_data_delete_all (walk_state); | |
513 | ||
514 | /* | |
515 | * Lock the parser while we terminate this method. | |
516 | * If this is the last thread executing the method, | |
517 | * we have additional cleanup to perform | |
518 | */ | |
519 | status = acpi_ut_acquire_mutex (ACPI_MTX_PARSER); | |
520 | if (ACPI_FAILURE (status)) { | |
521 | return_ACPI_STATUS (status); | |
522 | } | |
523 | ||
524 | /* Signal completion of the execution of this method if necessary */ | |
525 | ||
526 | if (walk_state->method_desc->method.semaphore) { | |
527 | status = acpi_os_signal_semaphore ( | |
528 | walk_state->method_desc->method.semaphore, 1); | |
529 | if (ACPI_FAILURE (status)) { | |
530 | ACPI_REPORT_ERROR (("Could not signal method semaphore\n")); | |
531 | status = AE_OK; | |
532 | ||
533 | /* Ignore error and continue cleanup */ | |
534 | } | |
535 | } | |
536 | ||
537 | if (walk_state->method_desc->method.thread_count) { | |
538 | ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, | |
539 | "*** Not deleting method namespace, there are still %d threads\n", | |
540 | walk_state->method_desc->method.thread_count)); | |
541 | } | |
542 | ||
543 | if (!walk_state->method_desc->method.thread_count) { | |
544 | /* | |
545 | * Support to dynamically change a method from not_serialized to | |
546 | * Serialized if it appears that the method is written foolishly and | |
547 | * does not support multiple thread execution. The best example of this | |
548 | * is if such a method creates namespace objects and blocks. A second | |
549 | * thread will fail with an AE_ALREADY_EXISTS exception | |
550 | * | |
551 | * This code is here because we must wait until the last thread exits | |
552 | * before creating the synchronization semaphore. | |
553 | */ | |
554 | if ((walk_state->method_desc->method.concurrency == 1) && | |
555 | (!walk_state->method_desc->method.semaphore)) { | |
556 | status = acpi_os_create_semaphore (1, | |
557 | 1, | |
558 | &walk_state->method_desc->method.semaphore); | |
559 | } | |
560 | ||
561 | /* | |
562 | * There are no more threads executing this method. Perform | |
563 | * additional cleanup. | |
564 | * | |
565 | * The method Node is stored in the walk state | |
566 | */ | |
567 | method_node = walk_state->method_node; | |
568 | ||
569 | /* | |
570 | * Delete any namespace entries created immediately underneath | |
571 | * the method | |
572 | */ | |
573 | status = acpi_ut_acquire_mutex (ACPI_MTX_NAMESPACE); | |
574 | if (ACPI_FAILURE (status)) { | |
575 | return_ACPI_STATUS (status); | |
576 | } | |
577 | ||
578 | if (method_node->child) { | |
579 | acpi_ns_delete_namespace_subtree (method_node); | |
580 | } | |
581 | ||
582 | /* | |
583 | * Delete any namespace entries created anywhere else within | |
584 | * the namespace | |
585 | */ | |
586 | acpi_ns_delete_namespace_by_owner (walk_state->method_desc->method.owning_id); | |
587 | status = acpi_ut_release_mutex (ACPI_MTX_NAMESPACE); | |
588 | if (ACPI_FAILURE (status)) { | |
589 | return_ACPI_STATUS (status); | |
590 | } | |
591 | } | |
592 | ||
593 | status = acpi_ut_release_mutex (ACPI_MTX_PARSER); | |
594 | return_ACPI_STATUS (status); | |
595 | } | |
596 | ||
597 |