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path: root/drivers/acpi/acpica/evxface.c
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-rw-r--r--drivers/acpi/acpica/evxface.c474
1 files changed, 162 insertions, 312 deletions
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index 44bef5744ebb..7587eb6c9584 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -54,86 +54,25 @@ ACPI_MODULE_NAME("evxface")
54 54
55/******************************************************************************* 55/*******************************************************************************
56 * 56 *
57 * FUNCTION: acpi_populate_handler_object
58 *
59 * PARAMETERS: handler_obj - Handler object to populate
60 * handler_type - The type of handler:
61 * ACPI_SYSTEM_NOTIFY: system_handler (00-7f)
62 * ACPI_DEVICE_NOTIFY: driver_handler (80-ff)
63 * ACPI_ALL_NOTIFY: both system and device
64 * handler - Address of the handler
65 * context - Value passed to the handler on each GPE
66 * next - Address of a handler object to link to
67 *
68 * RETURN: None
69 *
70 * DESCRIPTION: Populate a handler object.
71 *
72 ******************************************************************************/
73static void
74acpi_populate_handler_object(struct acpi_object_notify_handler *handler_obj,
75 u32 handler_type,
76 acpi_notify_handler handler, void *context,
77 struct acpi_object_notify_handler *next)
78{
79 handler_obj->handler_type = handler_type;
80 handler_obj->handler = handler;
81 handler_obj->context = context;
82 handler_obj->next = next;
83}
84
85/*******************************************************************************
86 *
87 * FUNCTION: acpi_add_handler_object
88 *
89 * PARAMETERS: parent_obj - Parent of the new object
90 * handler - Address of the handler
91 * context - Value passed to the handler on each GPE
92 *
93 * RETURN: Status
94 *
95 * DESCRIPTION: Create a new handler object and populate it.
96 *
97 ******************************************************************************/
98static acpi_status
99acpi_add_handler_object(struct acpi_object_notify_handler *parent_obj,
100 acpi_notify_handler handler, void *context)
101{
102 struct acpi_object_notify_handler *handler_obj;
103
104 /* The parent must not be a defice notify handler object. */
105 if (parent_obj->handler_type & ACPI_DEVICE_NOTIFY)
106 return AE_BAD_PARAMETER;
107
108 handler_obj = ACPI_ALLOCATE_ZEROED(sizeof(*handler_obj));
109 if (!handler_obj)
110 return AE_NO_MEMORY;
111
112 acpi_populate_handler_object(handler_obj,
113 ACPI_SYSTEM_NOTIFY,
114 handler, context,
115 parent_obj->next);
116 parent_obj->next = handler_obj;
117
118 return AE_OK;
119}
120
121
122/*******************************************************************************
123 *
124 * FUNCTION: acpi_install_notify_handler 57 * FUNCTION: acpi_install_notify_handler
125 * 58 *
126 * PARAMETERS: Device - The device for which notifies will be handled 59 * PARAMETERS: Device - The device for which notifies will be handled
127 * handler_type - The type of handler: 60 * handler_type - The type of handler:
128 * ACPI_SYSTEM_NOTIFY: system_handler (00-7f) 61 * ACPI_SYSTEM_NOTIFY: System Handler (00-7F)
129 * ACPI_DEVICE_NOTIFY: driver_handler (80-ff) 62 * ACPI_DEVICE_NOTIFY: Device Handler (80-FF)
130 * ACPI_ALL_NOTIFY: both system and device 63 * ACPI_ALL_NOTIFY: Both System and Device
131 * Handler - Address of the handler 64 * Handler - Address of the handler
132 * Context - Value passed to the handler on each GPE 65 * Context - Value passed to the handler on each GPE
133 * 66 *
134 * RETURN: Status 67 * RETURN: Status
135 * 68 *
136 * DESCRIPTION: Install a handler for notifies on an ACPI device 69 * DESCRIPTION: Install a handler for notifications on an ACPI Device,
70 * thermal_zone, or Processor object.
71 *
72 * NOTES: The Root namespace object may have only one handler for each
73 * type of notify (System/Device). Device/Thermal/Processor objects
74 * may have one device notify handler, and multiple system notify
75 * handlers.
137 * 76 *
138 ******************************************************************************/ 77 ******************************************************************************/
139acpi_status 78acpi_status
@@ -141,17 +80,19 @@ acpi_install_notify_handler(acpi_handle device,
141 u32 handler_type, 80 u32 handler_type,
142 acpi_notify_handler handler, void *context) 81 acpi_notify_handler handler, void *context)
143{ 82{
83 struct acpi_namespace_node *node =
84 ACPI_CAST_PTR(struct acpi_namespace_node, device);
144 union acpi_operand_object *obj_desc; 85 union acpi_operand_object *obj_desc;
145 union acpi_operand_object *notify_obj; 86 union acpi_operand_object *handler_obj;
146 struct acpi_namespace_node *node;
147 acpi_status status; 87 acpi_status status;
88 u32 i;
148 89
149 ACPI_FUNCTION_TRACE(acpi_install_notify_handler); 90 ACPI_FUNCTION_TRACE(acpi_install_notify_handler);
150 91
151 /* Parameter validation */ 92 /* Parameter validation */
152 93
153 if ((!device) || 94 if ((!device) || (!handler) || (!handler_type) ||
154 (!handler) || (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) { 95 (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) {
155 return_ACPI_STATUS(AE_BAD_PARAMETER); 96 return_ACPI_STATUS(AE_BAD_PARAMETER);
156 } 97 }
157 98
@@ -160,144 +101,112 @@ acpi_install_notify_handler(acpi_handle device,
160 return_ACPI_STATUS(status); 101 return_ACPI_STATUS(status);
161 } 102 }
162 103
163 /* Convert and validate the device handle */
164
165 node = acpi_ns_validate_handle(device);
166 if (!node) {
167 status = AE_BAD_PARAMETER;
168 goto unlock_and_exit;
169 }
170
171 /* 104 /*
172 * Root Object: 105 * Root Object:
173 * Registering a notify handler on the root object indicates that the 106 * Registering a notify handler on the root object indicates that the
174 * caller wishes to receive notifications for all objects. Note that 107 * caller wishes to receive notifications for all objects. Note that
175 * only one <external> global handler can be regsitered (per notify type). 108 * only one global handler can be registered per notify type.
109 * Ensure that a handler is not already installed.
176 */ 110 */
177 if (device == ACPI_ROOT_OBJECT) { 111 if (device == ACPI_ROOT_OBJECT) {
112 for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
113 if (handler_type & (i + 1)) {
114 if (acpi_gbl_global_notify[i].handler) {
115 status = AE_ALREADY_EXISTS;
116 goto unlock_and_exit;
117 }
178 118
179 /* Make sure the handler is not already installed */ 119 acpi_gbl_global_notify[i].handler = handler;
180 120 acpi_gbl_global_notify[i].context = context;
181 if (((handler_type & ACPI_SYSTEM_NOTIFY) && 121 }
182 acpi_gbl_system_notify.handler) ||
183 ((handler_type & ACPI_DEVICE_NOTIFY) &&
184 acpi_gbl_device_notify.handler)) {
185 status = AE_ALREADY_EXISTS;
186 goto unlock_and_exit;
187 }
188
189 if (handler_type & ACPI_SYSTEM_NOTIFY) {
190 acpi_gbl_system_notify.node = node;
191 acpi_gbl_system_notify.handler = handler;
192 acpi_gbl_system_notify.context = context;
193 }
194
195 if (handler_type & ACPI_DEVICE_NOTIFY) {
196 acpi_gbl_device_notify.node = node;
197 acpi_gbl_device_notify.handler = handler;
198 acpi_gbl_device_notify.context = context;
199 } 122 }
200 123
201 /* Global notify handler installed */ 124 goto unlock_and_exit; /* Global notify handler installed, all done */
202 } 125 }
203 126
204 /* 127 /*
205 * All Other Objects: 128 * All Other Objects:
206 * Caller will only receive notifications specific to the target object. 129 * Caller will only receive notifications specific to the target
207 * Note that only certain object types can receive notifications. 130 * object. Note that only certain object types are allowed to
131 * receive notifications.
208 */ 132 */
209 else {
210 /* Notifies allowed on this object? */
211 133
212 if (!acpi_ev_is_notify_object(node)) { 134 /* Are Notifies allowed on this object? */
213 status = AE_TYPE;
214 goto unlock_and_exit;
215 }
216 135
217 /* Check for an existing internal object */ 136 if (!acpi_ev_is_notify_object(node)) {
137 status = AE_TYPE;
138 goto unlock_and_exit;
139 }
218 140
219 obj_desc = acpi_ns_get_attached_object(node); 141 /* Check for an existing internal object, might not exist */
220 if (obj_desc) {
221 142
222 /* Object exists. */ 143 obj_desc = acpi_ns_get_attached_object(node);
144 if (!obj_desc) {
223 145
224 /* For a device notify, make sure there's no handler. */ 146 /* Create a new object */
225 if ((handler_type & ACPI_DEVICE_NOTIFY) &&
226 obj_desc->common_notify.device_notify) {
227 status = AE_ALREADY_EXISTS;
228 goto unlock_and_exit;
229 }
230 147
231 /* System notifies may have more handlers installed. */ 148 obj_desc = acpi_ut_create_internal_object(node->type);
232 notify_obj = obj_desc->common_notify.system_notify; 149 if (!obj_desc) {
150 status = AE_NO_MEMORY;
151 goto unlock_and_exit;
152 }
233 153
234 if ((handler_type & ACPI_SYSTEM_NOTIFY) && notify_obj) { 154 /* Attach new object to the Node, remove local reference */
235 struct acpi_object_notify_handler *parent_obj; 155
156 status = acpi_ns_attach_object(device, obj_desc, node->type);
157 acpi_ut_remove_reference(obj_desc);
158 if (ACPI_FAILURE(status)) {
159 goto unlock_and_exit;
160 }
161 }
236 162
237 if (handler_type & ACPI_DEVICE_NOTIFY) { 163 /* Ensure that the handler is not already installed in the lists */
164
165 for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
166 if (handler_type & (i + 1)) {
167 handler_obj = obj_desc->common_notify.notify_list[i];
168 while (handler_obj) {
169 if (handler_obj->notify.handler == handler) {
238 status = AE_ALREADY_EXISTS; 170 status = AE_ALREADY_EXISTS;
239 goto unlock_and_exit; 171 goto unlock_and_exit;
240 } 172 }
241 173
242 parent_obj = &notify_obj->notify; 174 handler_obj = handler_obj->notify.next[i];
243 status = acpi_add_handler_object(parent_obj,
244 handler,
245 context);
246 goto unlock_and_exit;
247 }
248 } else {
249 /* Create a new object */
250
251 obj_desc = acpi_ut_create_internal_object(node->type);
252 if (!obj_desc) {
253 status = AE_NO_MEMORY;
254 goto unlock_and_exit;
255 }
256
257 /* Attach new object to the Node */
258
259 status =
260 acpi_ns_attach_object(device, obj_desc, node->type);
261
262 /* Remove local reference to the object */
263
264 acpi_ut_remove_reference(obj_desc);
265 if (ACPI_FAILURE(status)) {
266 goto unlock_and_exit;
267 } 175 }
268 } 176 }
177 }
269 178
270 /* Install the handler */ 179 /* Create and populate a new notify handler object */
271 180
272 notify_obj = 181 handler_obj = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_NOTIFY);
273 acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_NOTIFY); 182 if (!handler_obj) {
274 if (!notify_obj) { 183 status = AE_NO_MEMORY;
275 status = AE_NO_MEMORY; 184 goto unlock_and_exit;
276 goto unlock_and_exit; 185 }
277 }
278 186
279 acpi_populate_handler_object(&notify_obj->notify, 187 handler_obj->notify.node = node;
280 handler_type, 188 handler_obj->notify.handler_type = handler_type;
281 handler, context, 189 handler_obj->notify.handler = handler;
282 NULL); 190 handler_obj->notify.context = context;
283 191
284 if (handler_type & ACPI_SYSTEM_NOTIFY) { 192 /* Install the handler at the list head(s) */
285 obj_desc->common_notify.system_notify = notify_obj;
286 }
287 193
288 if (handler_type & ACPI_DEVICE_NOTIFY) { 194 for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
289 obj_desc->common_notify.device_notify = notify_obj; 195 if (handler_type & (i + 1)) {
290 } 196 handler_obj->notify.next[i] =
197 obj_desc->common_notify.notify_list[i];
291 198
292 if (handler_type == ACPI_ALL_NOTIFY) { 199 obj_desc->common_notify.notify_list[i] = handler_obj;
200 }
201 }
293 202
294 /* Extra ref if installed in both */ 203 /* Add an extra reference if handler was installed in both lists */
295 204
296 acpi_ut_add_reference(notify_obj); 205 if (handler_type == ACPI_ALL_NOTIFY) {
297 } 206 acpi_ut_add_reference(handler_obj);
298 } 207 }
299 208
300 unlock_and_exit: 209unlock_and_exit:
301 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); 210 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
302 return_ACPI_STATUS(status); 211 return_ACPI_STATUS(status);
303} 212}
@@ -308,11 +217,11 @@ ACPI_EXPORT_SYMBOL(acpi_install_notify_handler)
308 * 217 *
309 * FUNCTION: acpi_remove_notify_handler 218 * FUNCTION: acpi_remove_notify_handler
310 * 219 *
311 * PARAMETERS: Device - The device for which notifies will be handled 220 * PARAMETERS: Device - The device for which the handler is installed
312 * handler_type - The type of handler: 221 * handler_type - The type of handler:
313 * ACPI_SYSTEM_NOTIFY: system_handler (00-7f) 222 * ACPI_SYSTEM_NOTIFY: System Handler (00-7F)
314 * ACPI_DEVICE_NOTIFY: driver_handler (80-ff) 223 * ACPI_DEVICE_NOTIFY: Device Handler (80-FF)
315 * ACPI_ALL_NOTIFY: both system and device 224 * ACPI_ALL_NOTIFY: Both System and Device
316 * Handler - Address of the handler 225 * Handler - Address of the handler
317 * 226 *
318 * RETURN: Status 227 * RETURN: Status
@@ -324,165 +233,106 @@ acpi_status
324acpi_remove_notify_handler(acpi_handle device, 233acpi_remove_notify_handler(acpi_handle device,
325 u32 handler_type, acpi_notify_handler handler) 234 u32 handler_type, acpi_notify_handler handler)
326{ 235{
327 union acpi_operand_object *notify_obj; 236 struct acpi_namespace_node *node =
237 ACPI_CAST_PTR(struct acpi_namespace_node, device);
328 union acpi_operand_object *obj_desc; 238 union acpi_operand_object *obj_desc;
329 struct acpi_namespace_node *node; 239 union acpi_operand_object *handler_obj;
240 union acpi_operand_object *previous_handler_obj;
330 acpi_status status; 241 acpi_status status;
242 u32 i;
331 243
332 ACPI_FUNCTION_TRACE(acpi_remove_notify_handler); 244 ACPI_FUNCTION_TRACE(acpi_remove_notify_handler);
333 245
334 /* Parameter validation */ 246 /* Parameter validation */
335 247
336 if ((!device) || 248 if ((!device) || (!handler) || (!handler_type) ||
337 (!handler) || (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) { 249 (handler_type > ACPI_MAX_NOTIFY_HANDLER_TYPE)) {
338 status = AE_BAD_PARAMETER; 250 return_ACPI_STATUS(AE_BAD_PARAMETER);
339 goto exit;
340 } 251 }
341
342
343 /* Make sure all deferred tasks are completed */ 252 /* Make sure all deferred tasks are completed */
344 acpi_os_wait_events_complete(NULL); 253
254 acpi_os_wait_events_complete();
345 255
346 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); 256 status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
347 if (ACPI_FAILURE(status)) { 257 if (ACPI_FAILURE(status)) {
348 goto exit; 258 return_ACPI_STATUS(status);
349 }
350
351 /* Convert and validate the device handle */
352
353 node = acpi_ns_validate_handle(device);
354 if (!node) {
355 status = AE_BAD_PARAMETER;
356 goto unlock_and_exit;
357 } 259 }
358 260
359 /* Root Object */ 261 /* Root Object. Global handlers are removed here */
360 262
361 if (device == ACPI_ROOT_OBJECT) { 263 if (device == ACPI_ROOT_OBJECT) {
362 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 264 for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
363 "Removing notify handler for namespace root object\n")); 265 if (handler_type & (i + 1)) {
266 if (!acpi_gbl_global_notify[i].handler ||
267 (acpi_gbl_global_notify[i].handler !=
268 handler)) {
269 status = AE_NOT_EXIST;
270 goto unlock_and_exit;
271 }
364 272
365 if (((handler_type & ACPI_SYSTEM_NOTIFY) && 273 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
366 !acpi_gbl_system_notify.handler) || 274 "Removing global notify handler\n"));
367 ((handler_type & ACPI_DEVICE_NOTIFY) &&
368 !acpi_gbl_device_notify.handler)) {
369 status = AE_NOT_EXIST;
370 goto unlock_and_exit;
371 }
372 275
373 if (handler_type & ACPI_SYSTEM_NOTIFY) { 276 acpi_gbl_global_notify[i].handler = NULL;
374 acpi_gbl_system_notify.node = NULL; 277 acpi_gbl_global_notify[i].context = NULL;
375 acpi_gbl_system_notify.handler = NULL; 278 }
376 acpi_gbl_system_notify.context = NULL;
377 } 279 }
378 280
379 if (handler_type & ACPI_DEVICE_NOTIFY) { 281 goto unlock_and_exit;
380 acpi_gbl_device_notify.node = NULL;
381 acpi_gbl_device_notify.handler = NULL;
382 acpi_gbl_device_notify.context = NULL;
383 }
384 } 282 }
385 283
386 /* All Other Objects */ 284 /* All other objects: Are Notifies allowed on this object? */
387 285
388 else { 286 if (!acpi_ev_is_notify_object(node)) {
389 /* Notifies allowed on this object? */ 287 status = AE_TYPE;
288 goto unlock_and_exit;
289 }
390 290
391 if (!acpi_ev_is_notify_object(node)) { 291 /* Must have an existing internal object */
392 status = AE_TYPE;
393 goto unlock_and_exit;
394 }
395 292
396 /* Check for an existing internal object */ 293 obj_desc = acpi_ns_get_attached_object(node);
294 if (!obj_desc) {
295 status = AE_NOT_EXIST;
296 goto unlock_and_exit;
297 }
397 298
398 obj_desc = acpi_ns_get_attached_object(node); 299 /* Internal object exists. Find the handler and remove it */
399 if (!obj_desc) {
400 status = AE_NOT_EXIST;
401 goto unlock_and_exit;
402 }
403 300
404 /* Object exists - make sure there's an existing handler */ 301 for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++) {
302 if (handler_type & (i + 1)) {
303 handler_obj = obj_desc->common_notify.notify_list[i];
304 previous_handler_obj = NULL;
405 305
406 if (handler_type & ACPI_SYSTEM_NOTIFY) { 306 /* Attempt to find the handler in the handler list */
407 struct acpi_object_notify_handler *handler_obj;
408 struct acpi_object_notify_handler *parent_obj;
409 307
410 notify_obj = obj_desc->common_notify.system_notify; 308 while (handler_obj &&
411 if (!notify_obj) { 309 (handler_obj->notify.handler != handler)) {
412 status = AE_NOT_EXIST; 310 previous_handler_obj = handler_obj;
413 goto unlock_and_exit; 311 handler_obj = handler_obj->notify.next[i];
414 }
415
416 handler_obj = &notify_obj->notify;
417 parent_obj = NULL;
418 while (handler_obj->handler != handler) {
419 if (handler_obj->next) {
420 parent_obj = handler_obj;
421 handler_obj = handler_obj->next;
422 } else {
423 break;
424 }
425 } 312 }
426 313
427 if (handler_obj->handler != handler) { 314 if (!handler_obj) {
428 status = AE_BAD_PARAMETER; 315 status = AE_NOT_EXIST;
429 goto unlock_and_exit; 316 goto unlock_and_exit;
430 } 317 }
431 318
432 /* 319 /* Remove the handler object from the list */
433 * Remove the handler. There are three possible cases.
434 * First, we may need to remove a non-embedded object.
435 * Second, we may need to remove the embedded object's
436 * handler data, while non-embedded objects exist.
437 * Finally, we may need to remove the embedded object
438 * entirely along with its container.
439 */
440 if (parent_obj) {
441 /* Non-embedded object is being removed. */
442 parent_obj->next = handler_obj->next;
443 ACPI_FREE(handler_obj);
444 } else if (notify_obj->notify.next) {
445 /*
446 * The handler matches the embedded object, but
447 * there are more handler objects in the list.
448 * Replace the embedded object's data with the
449 * first next object's data and remove that
450 * object.
451 */
452 parent_obj = &notify_obj->notify;
453 handler_obj = notify_obj->notify.next;
454 *parent_obj = *handler_obj;
455 ACPI_FREE(handler_obj);
456 } else {
457 /* No more handler objects in the list. */
458 obj_desc->common_notify.system_notify = NULL;
459 acpi_ut_remove_reference(notify_obj);
460 }
461 }
462 320
463 if (handler_type & ACPI_DEVICE_NOTIFY) { 321 if (previous_handler_obj) { /* Handler is not at the list head */
464 notify_obj = obj_desc->common_notify.device_notify; 322 previous_handler_obj->notify.next[i] =
465 if (!notify_obj) { 323 handler_obj->notify.next[i];
466 status = AE_NOT_EXIST; 324 } else { /* Handler is at the list head */
467 goto unlock_and_exit;
468 }
469 325
470 if (notify_obj->notify.handler != handler) { 326 obj_desc->common_notify.notify_list[i] =
471 status = AE_BAD_PARAMETER; 327 handler_obj->notify.next[i];
472 goto unlock_and_exit;
473 } 328 }
474 329
475 /* Remove the handler */ 330 acpi_ut_remove_reference(handler_obj);
476 obj_desc->common_notify.device_notify = NULL;
477 acpi_ut_remove_reference(notify_obj);
478 } 331 }
479 } 332 }
480 333
481 unlock_and_exit: 334unlock_and_exit:
482 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); 335 (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
483 exit:
484 if (ACPI_FAILURE(status))
485 ACPI_EXCEPTION((AE_INFO, status, "Removing notify handler"));
486 return_ACPI_STATUS(status); 336 return_ACPI_STATUS(status);
487} 337}
488 338
@@ -492,7 +342,7 @@ ACPI_EXPORT_SYMBOL(acpi_remove_notify_handler)
492 * 342 *
493 * FUNCTION: acpi_install_exception_handler 343 * FUNCTION: acpi_install_exception_handler
494 * 344 *
495 * PARAMETERS: Handler - Pointer to the handler function for the 345 * PARAMETERS: handler - Pointer to the handler function for the
496 * event 346 * event
497 * 347 *
498 * RETURN: Status 348 * RETURN: Status
@@ -536,8 +386,8 @@ ACPI_EXPORT_SYMBOL(acpi_install_exception_handler)
536 * 386 *
537 * FUNCTION: acpi_install_global_event_handler 387 * FUNCTION: acpi_install_global_event_handler
538 * 388 *
539 * PARAMETERS: Handler - Pointer to the global event handler function 389 * PARAMETERS: handler - Pointer to the global event handler function
540 * Context - Value passed to the handler on each event 390 * context - Value passed to the handler on each event
541 * 391 *
542 * RETURN: Status 392 * RETURN: Status
543 * 393 *
@@ -586,10 +436,10 @@ ACPI_EXPORT_SYMBOL(acpi_install_global_event_handler)
586 * 436 *
587 * FUNCTION: acpi_install_fixed_event_handler 437 * FUNCTION: acpi_install_fixed_event_handler
588 * 438 *
589 * PARAMETERS: Event - Event type to enable. 439 * PARAMETERS: event - Event type to enable.
590 * Handler - Pointer to the handler function for the 440 * handler - Pointer to the handler function for the
591 * event 441 * event
592 * Context - Value passed to the handler on each GPE 442 * context - Value passed to the handler on each GPE
593 * 443 *
594 * RETURN: Status 444 * RETURN: Status
595 * 445 *
@@ -656,8 +506,8 @@ ACPI_EXPORT_SYMBOL(acpi_install_fixed_event_handler)
656 * 506 *
657 * FUNCTION: acpi_remove_fixed_event_handler 507 * FUNCTION: acpi_remove_fixed_event_handler
658 * 508 *
659 * PARAMETERS: Event - Event type to disable. 509 * PARAMETERS: event - Event type to disable.
660 * Handler - Address of the handler 510 * handler - Address of the handler
661 * 511 *
662 * RETURN: Status 512 * RETURN: Status
663 * 513 *
@@ -713,10 +563,10 @@ ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler)
713 * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT 563 * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT
714 * defined GPEs) 564 * defined GPEs)
715 * gpe_number - The GPE number within the GPE block 565 * gpe_number - The GPE number within the GPE block
716 * Type - Whether this GPE should be treated as an 566 * type - Whether this GPE should be treated as an
717 * edge- or level-triggered interrupt. 567 * edge- or level-triggered interrupt.
718 * Address - Address of the handler 568 * address - Address of the handler
719 * Context - Value passed to the handler on each GPE 569 * context - Value passed to the handler on each GPE
720 * 570 *
721 * RETURN: Status 571 * RETURN: Status
722 * 572 *
@@ -823,7 +673,7 @@ ACPI_EXPORT_SYMBOL(acpi_install_gpe_handler)
823 * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT 673 * PARAMETERS: gpe_device - Namespace node for the GPE (NULL for FADT
824 * defined GPEs) 674 * defined GPEs)
825 * gpe_number - The event to remove a handler 675 * gpe_number - The event to remove a handler
826 * Address - Address of the handler 676 * address - Address of the handler
827 * 677 *
828 * RETURN: Status 678 * RETURN: Status
829 * 679 *
@@ -849,7 +699,7 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
849 699
850 /* Make sure all deferred tasks are completed */ 700 /* Make sure all deferred tasks are completed */
851 701
852 acpi_os_wait_events_complete(NULL); 702 acpi_os_wait_events_complete();
853 703
854 status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); 704 status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
855 if (ACPI_FAILURE(status)) { 705 if (ACPI_FAILURE(status)) {
@@ -919,8 +769,8 @@ ACPI_EXPORT_SYMBOL(acpi_remove_gpe_handler)
919 * 769 *
920 * FUNCTION: acpi_acquire_global_lock 770 * FUNCTION: acpi_acquire_global_lock
921 * 771 *
922 * PARAMETERS: Timeout - How long the caller is willing to wait 772 * PARAMETERS: timeout - How long the caller is willing to wait
923 * Handle - Where the handle to the lock is returned 773 * handle - Where the handle to the lock is returned
924 * (if acquired) 774 * (if acquired)
925 * 775 *
926 * RETURN: Status 776 * RETURN: Status
@@ -967,7 +817,7 @@ ACPI_EXPORT_SYMBOL(acpi_acquire_global_lock)
967 * 817 *
968 * FUNCTION: acpi_release_global_lock 818 * FUNCTION: acpi_release_global_lock
969 * 819 *
970 * PARAMETERS: Handle - Returned from acpi_acquire_global_lock 820 * PARAMETERS: handle - Returned from acpi_acquire_global_lock
971 * 821 *
972 * RETURN: Status 822 * RETURN: Status
973 * 823 *
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