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1/*******************************************************************************
2 *
3 * Module Name: nseval - Object evaluation, includes control method execution
4 *
5 ******************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2012, Intel Corp.
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#include <acpi/acpi.h>
45#include "accommon.h"
46#include "acparser.h"
47#include "acinterp.h"
48#include "acnamesp.h"
49
50#define _COMPONENT ACPI_NAMESPACE
51ACPI_MODULE_NAME("nseval")
52
53/* Local prototypes */
54static void
55acpi_ns_exec_module_code(union acpi_operand_object *method_obj,
56 struct acpi_evaluate_info *info);
57
58/*******************************************************************************
59 *
60 * FUNCTION: acpi_ns_evaluate
61 *
62 * PARAMETERS: Info - Evaluation info block, contains:
63 * prefix_node - Prefix or Method/Object Node to execute
64 * Pathname - Name of method to execute, If NULL, the
65 * Node is the object to execute
66 * Parameters - List of parameters to pass to the method,
67 * terminated by NULL. Params itself may be
68 * NULL if no parameters are being passed.
69 * return_object - Where to put method's return value (if
70 * any). If NULL, no value is returned.
71 * parameter_type - Type of Parameter list
72 * return_object - Where to put method's return value (if
73 * any). If NULL, no value is returned.
74 * Flags - ACPI_IGNORE_RETURN_VALUE to delete return
75 *
76 * RETURN: Status
77 *
78 * DESCRIPTION: Execute a control method or return the current value of an
79 * ACPI namespace object.
80 *
81 * MUTEX: Locks interpreter
82 *
83 ******************************************************************************/
84
85acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
86{
87 acpi_status status;
88 struct acpi_namespace_node *node;
89
90 ACPI_FUNCTION_TRACE(ns_evaluate);
91
92 if (!info) {
93 return_ACPI_STATUS(AE_BAD_PARAMETER);
94 }
95
96 /* Initialize the return value to an invalid object */
97
98 info->return_object = NULL;
99 info->param_count = 0;
100
101 /*
102 * Get the actual namespace node for the target object. Handles these cases:
103 *
104 * 1) Null node, Pathname (absolute path)
105 * 2) Node, Pathname (path relative to Node)
106 * 3) Node, Null Pathname
107 */
108 status = acpi_ns_get_node(info->prefix_node, info->pathname,
109 ACPI_NS_NO_UPSEARCH, &info->resolved_node);
110 if (ACPI_FAILURE(status)) {
111 return_ACPI_STATUS(status);
112 }
113
114 /*
115 * For a method alias, we must grab the actual method node so that proper
116 * scoping context will be established before execution.
117 */
118 if (acpi_ns_get_type(info->resolved_node) ==
119 ACPI_TYPE_LOCAL_METHOD_ALIAS) {
120 info->resolved_node =
121 ACPI_CAST_PTR(struct acpi_namespace_node,
122 info->resolved_node->object);
123 }
124
125 ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n", info->pathname,
126 info->resolved_node,
127 acpi_ns_get_attached_object(info->resolved_node)));
128
129 node = info->resolved_node;
130
131 /*
132 * Two major cases here:
133 *
134 * 1) The object is a control method -- execute it
135 * 2) The object is not a method -- just return it's current value
136 */
137 if (acpi_ns_get_type(info->resolved_node) == ACPI_TYPE_METHOD) {
138 /*
139 * 1) Object is a control method - execute it
140 */
141
142 /* Verify that there is a method object associated with this node */
143
144 info->obj_desc =
145 acpi_ns_get_attached_object(info->resolved_node);
146 if (!info->obj_desc) {
147 ACPI_ERROR((AE_INFO,
148 "Control method has no attached sub-object"));
149 return_ACPI_STATUS(AE_NULL_OBJECT);
150 }
151
152 /* Count the number of arguments being passed to the method */
153
154 if (info->parameters) {
155 while (info->parameters[info->param_count]) {
156 if (info->param_count > ACPI_METHOD_MAX_ARG) {
157 return_ACPI_STATUS(AE_LIMIT);
158 }
159 info->param_count++;
160 }
161 }
162
163
164 ACPI_DUMP_PATHNAME(info->resolved_node, "ACPI: Execute Method",
165 ACPI_LV_INFO, _COMPONENT);
166
167 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
168 "Method at AML address %p Length %X\n",
169 info->obj_desc->method.aml_start + 1,
170 info->obj_desc->method.aml_length - 1));
171
172 /*
173 * Any namespace deletion must acquire both the namespace and
174 * interpreter locks to ensure that no thread is using the portion of
175 * the namespace that is being deleted.
176 *
177 * Execute the method via the interpreter. The interpreter is locked
178 * here before calling into the AML parser
179 */
180 acpi_ex_enter_interpreter();
181 status = acpi_ps_execute_method(info);
182 acpi_ex_exit_interpreter();
183 } else {
184 /*
185 * 2) Object is not a method, return its current value
186 *
187 * Disallow certain object types. For these, "evaluation" is undefined.
188 */
189 switch (info->resolved_node->type) {
190 case ACPI_TYPE_DEVICE:
191 case ACPI_TYPE_EVENT:
192 case ACPI_TYPE_MUTEX:
193 case ACPI_TYPE_REGION:
194 case ACPI_TYPE_THERMAL:
195 case ACPI_TYPE_LOCAL_SCOPE:
196
197 ACPI_ERROR((AE_INFO,
198 "[%4.4s] Evaluation of object type [%s] is not supported",
199 info->resolved_node->name.ascii,
200 acpi_ut_get_type_name(info->resolved_node->
201 type)));
202
203 return_ACPI_STATUS(AE_TYPE);
204
205 default:
206 break;
207 }
208
209 /*
210 * Objects require additional resolution steps (e.g., the Node may be
211 * a field that must be read, etc.) -- we can't just grab the object
212 * out of the node.
213 *
214 * Use resolve_node_to_value() to get the associated value.
215 *
216 * NOTE: we can get away with passing in NULL for a walk state because
217 * resolved_node is guaranteed to not be a reference to either a method
218 * local or a method argument (because this interface is never called
219 * from a running method.)
220 *
221 * Even though we do not directly invoke the interpreter for object
222 * resolution, we must lock it because we could access an opregion.
223 * The opregion access code assumes that the interpreter is locked.
224 */
225 acpi_ex_enter_interpreter();
226
227 /* Function has a strange interface */
228
229 status =
230 acpi_ex_resolve_node_to_value(&info->resolved_node, NULL);
231 acpi_ex_exit_interpreter();
232
233 /*
234 * If acpi_ex_resolve_node_to_value() succeeded, the return value was placed
235 * in resolved_node.
236 */
237 if (ACPI_SUCCESS(status)) {
238 status = AE_CTRL_RETURN_VALUE;
239 info->return_object =
240 ACPI_CAST_PTR(union acpi_operand_object,
241 info->resolved_node);
242
243 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
244 "Returning object %p [%s]\n",
245 info->return_object,
246 acpi_ut_get_object_type_name(info->
247 return_object)));
248 }
249 }
250
251 /*
252 * Check input argument count against the ASL-defined count for a method.
253 * Also check predefined names: argument count and return value against
254 * the ACPI specification. Some incorrect return value types are repaired.
255 */
256 (void)acpi_ns_check_predefined_names(node, info->param_count,
257 status, &info->return_object);
258
259 /* Check if there is a return value that must be dealt with */
260
261 if (status == AE_CTRL_RETURN_VALUE) {
262
263 /* If caller does not want the return value, delete it */
264
265 if (info->flags & ACPI_IGNORE_RETURN_VALUE) {
266 acpi_ut_remove_reference(info->return_object);
267 info->return_object = NULL;
268 }
269
270 /* Map AE_CTRL_RETURN_VALUE to AE_OK, we are done with it */
271
272 status = AE_OK;
273 }
274
275 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
276 "*** Completed evaluation of object %s ***\n",
277 info->pathname));
278
279 /*
280 * Namespace was unlocked by the handling acpi_ns* function, so we
281 * just return
282 */
283 return_ACPI_STATUS(status);
284}
285
286/*******************************************************************************
287 *
288 * FUNCTION: acpi_ns_exec_module_code_list
289 *
290 * PARAMETERS: None
291 *
292 * RETURN: None. Exceptions during method execution are ignored, since
293 * we cannot abort a table load.
294 *
295 * DESCRIPTION: Execute all elements of the global module-level code list.
296 * Each element is executed as a single control method.
297 *
298 ******************************************************************************/
299
300void acpi_ns_exec_module_code_list(void)
301{
302 union acpi_operand_object *prev;
303 union acpi_operand_object *next;
304 struct acpi_evaluate_info *info;
305 u32 method_count = 0;
306
307 ACPI_FUNCTION_TRACE(ns_exec_module_code_list);
308
309 /* Exit now if the list is empty */
310
311 next = acpi_gbl_module_code_list;
312 if (!next) {
313 return_VOID;
314 }
315
316 /* Allocate the evaluation information block */
317
318 info = ACPI_ALLOCATE(sizeof(struct acpi_evaluate_info));
319 if (!info) {
320 return_VOID;
321 }
322
323 /* Walk the list, executing each "method" */
324
325 while (next) {
326 prev = next;
327 next = next->method.mutex;
328
329 /* Clear the link field and execute the method */
330
331 prev->method.mutex = NULL;
332 acpi_ns_exec_module_code(prev, info);
333 method_count++;
334
335 /* Delete the (temporary) method object */
336
337 acpi_ut_remove_reference(prev);
338 }
339
340 ACPI_INFO((AE_INFO,
341 "Executed %u blocks of module-level executable AML code",
342 method_count));
343
344 ACPI_FREE(info);
345 acpi_gbl_module_code_list = NULL;
346 return_VOID;
347}
348
349/*******************************************************************************
350 *
351 * FUNCTION: acpi_ns_exec_module_code
352 *
353 * PARAMETERS: method_obj - Object container for the module-level code
354 * Info - Info block for method evaluation
355 *
356 * RETURN: None. Exceptions during method execution are ignored, since
357 * we cannot abort a table load.
358 *
359 * DESCRIPTION: Execute a control method containing a block of module-level
360 * executable AML code. The control method is temporarily
361 * installed to the root node, then evaluated.
362 *
363 ******************************************************************************/
364
365static void
366acpi_ns_exec_module_code(union acpi_operand_object *method_obj,
367 struct acpi_evaluate_info *info)
368{
369 union acpi_operand_object *parent_obj;
370 struct acpi_namespace_node *parent_node;
371 acpi_object_type type;
372 acpi_status status;
373
374 ACPI_FUNCTION_TRACE(ns_exec_module_code);
375
376 /*
377 * Get the parent node. We cheat by using the next_object field
378 * of the method object descriptor.
379 */
380 parent_node = ACPI_CAST_PTR(struct acpi_namespace_node,
381 method_obj->method.next_object);
382 type = acpi_ns_get_type(parent_node);
383
384 /*
385 * Get the region handler and save it in the method object. We may need
386 * this if an operation region declaration causes a _REG method to be run.
387 *
388 * We can't do this in acpi_ps_link_module_code because
389 * acpi_gbl_root_node->Object is NULL at PASS1.
390 */
391 if ((type == ACPI_TYPE_DEVICE) && parent_node->object) {
392 method_obj->method.dispatch.handler =
393 parent_node->object->device.handler;
394 }
395
396 /* Must clear next_object (acpi_ns_attach_object needs the field) */
397
398 method_obj->method.next_object = NULL;
399
400 /* Initialize the evaluation information block */
401
402 ACPI_MEMSET(info, 0, sizeof(struct acpi_evaluate_info));
403 info->prefix_node = parent_node;
404
405 /*
406 * Get the currently attached parent object. Add a reference, because the
407 * ref count will be decreased when the method object is installed to
408 * the parent node.
409 */
410 parent_obj = acpi_ns_get_attached_object(parent_node);
411 if (parent_obj) {
412 acpi_ut_add_reference(parent_obj);
413 }
414
415 /* Install the method (module-level code) in the parent node */
416
417 status = acpi_ns_attach_object(parent_node, method_obj,
418 ACPI_TYPE_METHOD);
419 if (ACPI_FAILURE(status)) {
420 goto exit;
421 }
422
423 /* Execute the parent node as a control method */
424
425 status = acpi_ns_evaluate(info);
426
427 ACPI_DEBUG_PRINT((ACPI_DB_INIT, "Executed module-level code at %p\n",
428 method_obj->method.aml_start));
429
430 /* Delete a possible implicit return value (in slack mode) */
431
432 if (info->return_object) {
433 acpi_ut_remove_reference(info->return_object);
434 }
435
436 /* Detach the temporary method object */
437
438 acpi_ns_detach_object(parent_node);
439
440 /* Restore the original parent object */
441
442 if (parent_obj) {
443 status = acpi_ns_attach_object(parent_node, parent_obj, type);
444 } else {
445 parent_node->type = (u8)type;
446 }
447
448 exit:
449 if (parent_obj) {
450 acpi_ut_remove_reference(parent_obj);
451 }
452 return_VOID;
453}
1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2/*******************************************************************************
3 *
4 * Module Name: nseval - Object evaluation, includes control method execution
5 *
6 ******************************************************************************/
7
8#include <acpi/acpi.h>
9#include "accommon.h"
10#include "acparser.h"
11#include "acinterp.h"
12#include "acnamesp.h"
13
14#define _COMPONENT ACPI_NAMESPACE
15ACPI_MODULE_NAME("nseval")
16
17/*******************************************************************************
18 *
19 * FUNCTION: acpi_ns_evaluate
20 *
21 * PARAMETERS: info - Evaluation info block, contains these fields
22 * and more:
23 * prefix_node - Prefix or Method/Object Node to execute
24 * relative_path - Name of method to execute, If NULL, the
25 * Node is the object to execute
26 * parameters - List of parameters to pass to the method,
27 * terminated by NULL. Params itself may be
28 * NULL if no parameters are being passed.
29 * parameter_type - Type of Parameter list
30 * return_object - Where to put method's return value (if
31 * any). If NULL, no value is returned.
32 * flags - ACPI_IGNORE_RETURN_VALUE to delete return
33 *
34 * RETURN: Status
35 *
36 * DESCRIPTION: Execute a control method or return the current value of an
37 * ACPI namespace object.
38 *
39 * MUTEX: Locks interpreter
40 *
41 ******************************************************************************/
42acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info)
43{
44 acpi_status status;
45
46 ACPI_FUNCTION_TRACE(ns_evaluate);
47
48 if (!info) {
49 return_ACPI_STATUS(AE_BAD_PARAMETER);
50 }
51
52 if (!info->node) {
53 /*
54 * Get the actual namespace node for the target object if we
55 * need to. Handles these cases:
56 *
57 * 1) Null node, valid pathname from root (absolute path)
58 * 2) Node and valid pathname (path relative to Node)
59 * 3) Node, Null pathname
60 */
61 status =
62 acpi_ns_get_node(info->prefix_node, info->relative_pathname,
63 ACPI_NS_NO_UPSEARCH, &info->node);
64 if (ACPI_FAILURE(status)) {
65 return_ACPI_STATUS(status);
66 }
67 }
68
69 /*
70 * For a method alias, we must grab the actual method node so that
71 * proper scoping context will be established before execution.
72 */
73 if (acpi_ns_get_type(info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) {
74 info->node =
75 ACPI_CAST_PTR(struct acpi_namespace_node,
76 info->node->object);
77 }
78
79 /* Complete the info block initialization */
80
81 info->return_object = NULL;
82 info->node_flags = info->node->flags;
83 info->obj_desc = acpi_ns_get_attached_object(info->node);
84
85 ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n",
86 info->relative_pathname, info->node,
87 acpi_ns_get_attached_object(info->node)));
88
89 /* Get info if we have a predefined name (_HID, etc.) */
90
91 info->predefined =
92 acpi_ut_match_predefined_method(info->node->name.ascii);
93
94 /* Get the full pathname to the object, for use in warning messages */
95
96 info->full_pathname = acpi_ns_get_normalized_pathname(info->node, TRUE);
97 if (!info->full_pathname) {
98 return_ACPI_STATUS(AE_NO_MEMORY);
99 }
100
101 /* Optional object evaluation log */
102
103 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION,
104 "%-26s: %s (%s)\n", " Enter evaluation",
105 &info->full_pathname[1],
106 acpi_ut_get_type_name(info->node->type)));
107
108 /* Count the number of arguments being passed in */
109
110 info->param_count = 0;
111 if (info->parameters) {
112 while (info->parameters[info->param_count]) {
113 info->param_count++;
114 }
115
116 /* Warn on impossible argument count */
117
118 if (info->param_count > ACPI_METHOD_NUM_ARGS) {
119 ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
120 ACPI_WARN_ALWAYS,
121 "Excess arguments (%u) - using only %u",
122 info->param_count,
123 ACPI_METHOD_NUM_ARGS));
124
125 info->param_count = ACPI_METHOD_NUM_ARGS;
126 }
127 }
128
129 /*
130 * For predefined names: Check that the declared argument count
131 * matches the ACPI spec -- otherwise this is a BIOS error.
132 */
133 acpi_ns_check_acpi_compliance(info->full_pathname, info->node,
134 info->predefined);
135
136 /*
137 * For all names: Check that the incoming argument count for
138 * this method/object matches the actual ASL/AML definition.
139 */
140 acpi_ns_check_argument_count(info->full_pathname, info->node,
141 info->param_count, info->predefined);
142
143 /* For predefined names: Typecheck all incoming arguments */
144
145 acpi_ns_check_argument_types(info);
146
147 /*
148 * Three major evaluation cases:
149 *
150 * 1) Object types that cannot be evaluated by definition
151 * 2) The object is a control method -- execute it
152 * 3) The object is not a method -- just return it's current value
153 */
154 switch (acpi_ns_get_type(info->node)) {
155 case ACPI_TYPE_ANY:
156 case ACPI_TYPE_DEVICE:
157 case ACPI_TYPE_EVENT:
158 case ACPI_TYPE_MUTEX:
159 case ACPI_TYPE_REGION:
160 case ACPI_TYPE_THERMAL:
161 case ACPI_TYPE_LOCAL_SCOPE:
162 /*
163 * 1) Disallow evaluation of these object types. For these,
164 * object evaluation is undefined.
165 */
166 ACPI_ERROR((AE_INFO,
167 "%s: This object type [%s] "
168 "never contains data and cannot be evaluated",
169 info->full_pathname,
170 acpi_ut_get_type_name(info->node->type)));
171
172 status = AE_TYPE;
173 goto cleanup;
174
175 case ACPI_TYPE_METHOD:
176 /*
177 * 2) Object is a control method - execute it
178 */
179
180 /* Verify that there is a method object associated with this node */
181
182 if (!info->obj_desc) {
183 ACPI_ERROR((AE_INFO,
184 "%s: Method has no attached sub-object",
185 info->full_pathname));
186 status = AE_NULL_OBJECT;
187 goto cleanup;
188 }
189
190 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
191 "**** Execute method [%s] at AML address %p length %X\n",
192 info->full_pathname,
193 info->obj_desc->method.aml_start + 1,
194 info->obj_desc->method.aml_length - 1));
195
196 /*
197 * Any namespace deletion must acquire both the namespace and
198 * interpreter locks to ensure that no thread is using the portion of
199 * the namespace that is being deleted.
200 *
201 * Execute the method via the interpreter. The interpreter is locked
202 * here before calling into the AML parser
203 */
204 acpi_ex_enter_interpreter();
205 status = acpi_ps_execute_method(info);
206 acpi_ex_exit_interpreter();
207 break;
208
209 default:
210 /*
211 * 3) All other non-method objects -- get the current object value
212 */
213
214 /*
215 * Some objects require additional resolution steps (e.g., the Node
216 * may be a field that must be read, etc.) -- we can't just grab
217 * the object out of the node.
218 *
219 * Use resolve_node_to_value() to get the associated value.
220 *
221 * NOTE: we can get away with passing in NULL for a walk state because
222 * the Node is guaranteed to not be a reference to either a method
223 * local or a method argument (because this interface is never called
224 * from a running method.)
225 *
226 * Even though we do not directly invoke the interpreter for object
227 * resolution, we must lock it because we could access an op_region.
228 * The op_region access code assumes that the interpreter is locked.
229 */
230 acpi_ex_enter_interpreter();
231
232 /* TBD: resolve_node_to_value has a strange interface, fix */
233
234 info->return_object =
235 ACPI_CAST_PTR(union acpi_operand_object, info->node);
236
237 status =
238 acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
239 (struct acpi_namespace_node,
240 &info->return_object), NULL);
241 acpi_ex_exit_interpreter();
242
243 if (ACPI_FAILURE(status)) {
244 info->return_object = NULL;
245 goto cleanup;
246 }
247
248 ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Returned object %p [%s]\n",
249 info->return_object,
250 acpi_ut_get_object_type_name(info->
251 return_object)));
252
253 status = AE_CTRL_RETURN_VALUE; /* Always has a "return value" */
254 break;
255 }
256
257 /*
258 * For predefined names, check the return value against the ACPI
259 * specification. Some incorrect return value types are repaired.
260 */
261 (void)acpi_ns_check_return_value(info->node, info, info->param_count,
262 status, &info->return_object);
263
264 /* Check if there is a return value that must be dealt with */
265
266 if (status == AE_CTRL_RETURN_VALUE) {
267
268 /* If caller does not want the return value, delete it */
269
270 if (info->flags & ACPI_IGNORE_RETURN_VALUE) {
271 acpi_ut_remove_reference(info->return_object);
272 info->return_object = NULL;
273 }
274
275 /* Map AE_CTRL_RETURN_VALUE to AE_OK, we are done with it */
276
277 status = AE_OK;
278 } else if (ACPI_FAILURE(status)) {
279
280 /* If return_object exists, delete it */
281
282 if (info->return_object) {
283 acpi_ut_remove_reference(info->return_object);
284 info->return_object = NULL;
285 }
286 }
287
288 ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
289 "*** Completed evaluation of object %s ***\n",
290 info->relative_pathname));
291
292cleanup:
293 /* Optional object evaluation log */
294
295 ACPI_DEBUG_PRINT_RAW((ACPI_DB_EVALUATION,
296 "%-26s: %s\n", " Exit evaluation",
297 &info->full_pathname[1]));
298
299 /*
300 * Namespace was unlocked by the handling acpi_ns* function, so we
301 * just free the pathname and return
302 */
303 ACPI_FREE(info->full_pathname);
304 info->full_pathname = NULL;
305 return_ACPI_STATUS(status);
306}