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1 | /* |
2 | * acpi_system.c - ACPI System Driver ($Revision: 63 $) |
3 | * |
4 | * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> |
5 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
6 | * |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License as published by |
11 | * the Free Software Foundation; either version 2 of the License, or (at |
12 | * your option) any later version. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, but |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | * General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License along |
20 | * with this program; if not, write to the Free Software Foundation, Inc., |
21 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
22 | * |
23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
24 | */ |
25 | |
26 | #include <linux/proc_fs.h> |
27 | #include <linux/seq_file.h> |
28 | #include <linux/slab.h> |
29 | #include <linux/init.h> |
30 | #include <linux/string.h> |
31 | #include <asm/uaccess.h> |
32 | |
33 | #include <acpi/acpi_drivers.h> |
34 | |
35 | #define PREFIX "ACPI: " |
36 | |
37 | #define _COMPONENT ACPI_SYSTEM_COMPONENT |
38 | ACPI_MODULE_NAME("system"); |
39 | |
40 | #define ACPI_SYSTEM_CLASS "system" |
41 | #define ACPI_SYSTEM_DEVICE_NAME "System" |
42 | |
43 | u32 acpi_irq_handled; |
44 | u32 acpi_irq_not_handled; |
45 | |
46 | /* |
47 | * Make ACPICA version work as module param |
48 | */ |
49 | static int param_get_acpica_version(char *buffer, struct kernel_param *kp) |
50 | { |
51 | int result; |
52 | |
53 | result = sprintf(buffer, "%x", ACPI_CA_VERSION); |
54 | |
55 | return result; |
56 | } |
57 | |
58 | module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444); |
59 | |
60 | /* -------------------------------------------------------------------------- |
61 | FS Interface (/sys) |
62 | -------------------------------------------------------------------------- */ |
63 | static LIST_HEAD(acpi_table_attr_list); |
64 | static struct kobject *tables_kobj; |
65 | static struct kobject *dynamic_tables_kobj; |
66 | |
67 | struct acpi_table_attr { |
68 | struct bin_attribute attr; |
69 | char name[8]; |
70 | int instance; |
71 | struct list_head node; |
72 | }; |
73 | |
74 | static ssize_t acpi_table_show(struct kobject *kobj, |
75 | struct bin_attribute *bin_attr, char *buf, |
76 | loff_t offset, size_t count) |
77 | { |
78 | struct acpi_table_attr *table_attr = |
79 | container_of(bin_attr, struct acpi_table_attr, attr); |
80 | struct acpi_table_header *table_header = NULL; |
81 | acpi_status status; |
82 | char name[ACPI_NAME_SIZE]; |
83 | |
84 | if (strncmp(table_attr->name, "NULL", 4)) |
85 | memcpy(name, table_attr->name, ACPI_NAME_SIZE); |
86 | else |
87 | memcpy(name, "\0\0\0\0", 4); |
88 | |
89 | status = |
90 | acpi_get_table(name, table_attr->instance, |
91 | &table_header); |
92 | if (ACPI_FAILURE(status)) |
93 | return -ENODEV; |
94 | |
95 | return memory_read_from_buffer(buf, count, &offset, |
96 | table_header, table_header->length); |
97 | } |
98 | |
99 | static void acpi_table_attr_init(struct acpi_table_attr *table_attr, |
100 | struct acpi_table_header *table_header) |
101 | { |
102 | struct acpi_table_header *header = NULL; |
103 | struct acpi_table_attr *attr = NULL; |
104 | |
105 | sysfs_attr_init(&table_attr->attr.attr); |
106 | if (table_header->signature[0] != '\0') |
107 | memcpy(table_attr->name, table_header->signature, |
108 | ACPI_NAME_SIZE); |
109 | else |
110 | memcpy(table_attr->name, "NULL", 4); |
111 | |
112 | list_for_each_entry(attr, &acpi_table_attr_list, node) { |
113 | if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE)) |
114 | if (table_attr->instance < attr->instance) |
115 | table_attr->instance = attr->instance; |
116 | } |
117 | table_attr->instance++; |
118 | |
119 | if (table_attr->instance > 1 || (table_attr->instance == 1 && |
120 | !acpi_get_table |
121 | (table_header->signature, 2, &header))) |
122 | sprintf(table_attr->name + ACPI_NAME_SIZE, "%d", |
123 | table_attr->instance); |
124 | |
125 | table_attr->attr.size = 0; |
126 | table_attr->attr.read = acpi_table_show; |
127 | table_attr->attr.attr.name = table_attr->name; |
128 | table_attr->attr.attr.mode = 0400; |
129 | |
130 | return; |
131 | } |
132 | |
133 | static acpi_status |
134 | acpi_sysfs_table_handler(u32 event, void *table, void *context) |
135 | { |
136 | struct acpi_table_attr *table_attr; |
137 | |
138 | switch (event) { |
139 | case ACPI_TABLE_EVENT_LOAD: |
140 | table_attr = |
141 | kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); |
142 | if (!table_attr) |
143 | return AE_NO_MEMORY; |
144 | |
145 | acpi_table_attr_init(table_attr, table); |
146 | if (sysfs_create_bin_file(dynamic_tables_kobj, |
147 | &table_attr->attr)) { |
148 | kfree(table_attr); |
149 | return AE_ERROR; |
150 | } else |
151 | list_add_tail(&table_attr->node, |
152 | &acpi_table_attr_list); |
153 | break; |
154 | case ACPI_TABLE_EVENT_UNLOAD: |
155 | /* |
156 | * we do not need to do anything right now |
157 | * because the table is not deleted from the |
158 | * global table list when unloading it. |
159 | */ |
160 | break; |
161 | default: |
162 | return AE_BAD_PARAMETER; |
163 | } |
164 | return AE_OK; |
165 | } |
166 | |
167 | static int acpi_system_sysfs_init(void) |
168 | { |
169 | struct acpi_table_attr *table_attr; |
170 | struct acpi_table_header *table_header = NULL; |
171 | int table_index = 0; |
172 | int result; |
173 | |
174 | tables_kobj = kobject_create_and_add("tables", acpi_kobj); |
175 | if (!tables_kobj) |
176 | goto err; |
177 | |
178 | dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj); |
179 | if (!dynamic_tables_kobj) |
180 | goto err_dynamic_tables; |
181 | |
182 | do { |
183 | result = acpi_get_table_by_index(table_index, &table_header); |
184 | if (!result) { |
185 | table_index++; |
186 | table_attr = NULL; |
187 | table_attr = |
188 | kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL); |
189 | if (!table_attr) |
190 | return -ENOMEM; |
191 | |
192 | acpi_table_attr_init(table_attr, table_header); |
193 | result = |
194 | sysfs_create_bin_file(tables_kobj, |
195 | &table_attr->attr); |
196 | if (result) { |
197 | kfree(table_attr); |
198 | return result; |
199 | } else |
200 | list_add_tail(&table_attr->node, |
201 | &acpi_table_attr_list); |
202 | } |
203 | } while (!result); |
204 | kobject_uevent(tables_kobj, KOBJ_ADD); |
205 | kobject_uevent(dynamic_tables_kobj, KOBJ_ADD); |
206 | result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL); |
207 | |
208 | return result == AE_OK ? 0 : -EINVAL; |
209 | err_dynamic_tables: |
210 | kobject_put(tables_kobj); |
211 | err: |
212 | return -ENOMEM; |
213 | } |
214 | |
215 | /* |
216 | * Detailed ACPI IRQ counters in /sys/firmware/acpi/interrupts/ |
217 | * See Documentation/ABI/testing/sysfs-firmware-acpi |
218 | */ |
219 | |
220 | #define COUNT_GPE 0 |
221 | #define COUNT_SCI 1 /* acpi_irq_handled */ |
222 | #define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */ |
223 | #define COUNT_ERROR 3 /* other */ |
224 | #define NUM_COUNTERS_EXTRA 4 |
225 | |
226 | struct event_counter { |
227 | u32 count; |
228 | u32 flags; |
229 | }; |
230 | |
231 | static struct event_counter *all_counters; |
232 | static u32 num_gpes; |
233 | static u32 num_counters; |
234 | static struct attribute **all_attrs; |
235 | static u32 acpi_gpe_count; |
236 | |
237 | static struct attribute_group interrupt_stats_attr_group = { |
238 | .name = "interrupts", |
239 | }; |
240 | static struct kobj_attribute *counter_attrs; |
241 | |
242 | static void delete_gpe_attr_array(void) |
243 | { |
244 | struct event_counter *tmp = all_counters; |
245 | |
246 | all_counters = NULL; |
247 | kfree(tmp); |
248 | |
249 | if (counter_attrs) { |
250 | int i; |
251 | |
252 | for (i = 0; i < num_gpes; i++) |
253 | kfree(counter_attrs[i].attr.name); |
254 | |
255 | kfree(counter_attrs); |
256 | } |
257 | kfree(all_attrs); |
258 | |
259 | return; |
260 | } |
261 | |
262 | void acpi_os_gpe_count(u32 gpe_number) |
263 | { |
264 | acpi_gpe_count++; |
265 | |
266 | if (!all_counters) |
267 | return; |
268 | |
269 | if (gpe_number < num_gpes) |
270 | all_counters[gpe_number].count++; |
271 | else |
272 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]. |
273 | count++; |
274 | |
275 | return; |
276 | } |
277 | |
278 | void acpi_os_fixed_event_count(u32 event_number) |
279 | { |
280 | if (!all_counters) |
281 | return; |
282 | |
283 | if (event_number < ACPI_NUM_FIXED_EVENTS) |
284 | all_counters[num_gpes + event_number].count++; |
285 | else |
286 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR]. |
287 | count++; |
288 | |
289 | return; |
290 | } |
291 | |
292 | static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle) |
293 | { |
294 | int result = 0; |
295 | |
296 | if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) |
297 | goto end; |
298 | |
299 | if (index < num_gpes) { |
300 | result = acpi_get_gpe_device(index, handle); |
301 | if (result) { |
302 | ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND, |
303 | "Invalid GPE 0x%x\n", index)); |
304 | goto end; |
305 | } |
306 | result = acpi_get_gpe_status(*handle, index, |
307 | ACPI_NOT_ISR, status); |
308 | } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS)) |
309 | result = acpi_get_event_status(index - num_gpes, status); |
310 | |
311 | end: |
312 | return result; |
313 | } |
314 | |
315 | static ssize_t counter_show(struct kobject *kobj, |
316 | struct kobj_attribute *attr, char *buf) |
317 | { |
318 | int index = attr - counter_attrs; |
319 | int size; |
320 | acpi_handle handle; |
321 | acpi_event_status status; |
322 | int result = 0; |
323 | |
324 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count = |
325 | acpi_irq_handled; |
326 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count = |
327 | acpi_irq_not_handled; |
328 | all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count = |
329 | acpi_gpe_count; |
330 | |
331 | size = sprintf(buf, "%8d", all_counters[index].count); |
332 | |
333 | /* "gpe_all" or "sci" */ |
334 | if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS) |
335 | goto end; |
336 | |
337 | result = get_status(index, &status, &handle); |
338 | if (result) |
339 | goto end; |
340 | |
341 | if (!(status & ACPI_EVENT_FLAG_HANDLE)) |
342 | size += sprintf(buf + size, " invalid"); |
343 | else if (status & ACPI_EVENT_FLAG_ENABLED) |
344 | size += sprintf(buf + size, " enabled"); |
345 | else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED) |
346 | size += sprintf(buf + size, " wake_enabled"); |
347 | else |
348 | size += sprintf(buf + size, " disabled"); |
349 | |
350 | end: |
351 | size += sprintf(buf + size, "\n"); |
352 | return result ? result : size; |
353 | } |
354 | |
355 | /* |
356 | * counter_set() sets the specified counter. |
357 | * setting the total "sci" file to any value clears all counters. |
358 | * enable/disable/clear a gpe/fixed event in user space. |
359 | */ |
360 | static ssize_t counter_set(struct kobject *kobj, |
361 | struct kobj_attribute *attr, const char *buf, size_t size) |
362 | { |
363 | int index = attr - counter_attrs; |
364 | acpi_event_status status; |
365 | acpi_handle handle; |
366 | int result = 0; |
367 | |
368 | if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) { |
369 | int i; |
370 | for (i = 0; i < num_counters; ++i) |
371 | all_counters[i].count = 0; |
372 | acpi_gpe_count = 0; |
373 | acpi_irq_handled = 0; |
374 | acpi_irq_not_handled = 0; |
375 | goto end; |
376 | } |
377 | |
378 | /* show the event status for both GPEs and Fixed Events */ |
379 | result = get_status(index, &status, &handle); |
380 | if (result) |
381 | goto end; |
382 | |
383 | if (!(status & ACPI_EVENT_FLAG_HANDLE)) { |
384 | printk(KERN_WARNING PREFIX |
385 | "Can not change Invalid GPE/Fixed Event status\n"); |
386 | return -EINVAL; |
387 | } |
388 | |
389 | if (index < num_gpes) { |
390 | if (!strcmp(buf, "disable\n") && |
391 | (status & ACPI_EVENT_FLAG_ENABLED)) |
392 | result = acpi_set_gpe(handle, index, ACPI_GPE_DISABLE); |
393 | else if (!strcmp(buf, "enable\n") && |
394 | !(status & ACPI_EVENT_FLAG_ENABLED)) |
395 | result = acpi_set_gpe(handle, index, ACPI_GPE_ENABLE); |
396 | else if (!strcmp(buf, "clear\n") && |
397 | (status & ACPI_EVENT_FLAG_SET)) |
398 | result = acpi_clear_gpe(handle, index, ACPI_NOT_ISR); |
399 | else |
400 | all_counters[index].count = strtoul(buf, NULL, 0); |
401 | } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) { |
402 | int event = index - num_gpes; |
403 | if (!strcmp(buf, "disable\n") && |
404 | (status & ACPI_EVENT_FLAG_ENABLED)) |
405 | result = acpi_disable_event(event, ACPI_NOT_ISR); |
406 | else if (!strcmp(buf, "enable\n") && |
407 | !(status & ACPI_EVENT_FLAG_ENABLED)) |
408 | result = acpi_enable_event(event, ACPI_NOT_ISR); |
409 | else if (!strcmp(buf, "clear\n") && |
410 | (status & ACPI_EVENT_FLAG_SET)) |
411 | result = acpi_clear_event(event); |
412 | else |
413 | all_counters[index].count = strtoul(buf, NULL, 0); |
414 | } else |
415 | all_counters[index].count = strtoul(buf, NULL, 0); |
416 | |
417 | if (ACPI_FAILURE(result)) |
418 | result = -EINVAL; |
419 | end: |
420 | return result ? result : size; |
421 | } |
422 | |
423 | void acpi_irq_stats_init(void) |
424 | { |
425 | int i; |
426 | |
427 | if (all_counters) |
428 | return; |
429 | |
430 | num_gpes = acpi_current_gpe_count; |
431 | num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA; |
432 | |
433 | all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1), |
434 | GFP_KERNEL); |
435 | if (all_attrs == NULL) |
436 | return; |
437 | |
438 | all_counters = kzalloc(sizeof(struct event_counter) * (num_counters), |
439 | GFP_KERNEL); |
440 | if (all_counters == NULL) |
441 | goto fail; |
442 | |
443 | counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters), |
444 | GFP_KERNEL); |
445 | if (counter_attrs == NULL) |
446 | goto fail; |
447 | |
448 | for (i = 0; i < num_counters; ++i) { |
449 | char buffer[12]; |
450 | char *name; |
451 | |
452 | if (i < num_gpes) |
453 | sprintf(buffer, "gpe%02X", i); |
454 | else if (i == num_gpes + ACPI_EVENT_PMTIMER) |
455 | sprintf(buffer, "ff_pmtimer"); |
456 | else if (i == num_gpes + ACPI_EVENT_GLOBAL) |
457 | sprintf(buffer, "ff_gbl_lock"); |
458 | else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON) |
459 | sprintf(buffer, "ff_pwr_btn"); |
460 | else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON) |
461 | sprintf(buffer, "ff_slp_btn"); |
462 | else if (i == num_gpes + ACPI_EVENT_RTC) |
463 | sprintf(buffer, "ff_rt_clk"); |
464 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE) |
465 | sprintf(buffer, "gpe_all"); |
466 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) |
467 | sprintf(buffer, "sci"); |
468 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT) |
469 | sprintf(buffer, "sci_not"); |
470 | else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR) |
471 | sprintf(buffer, "error"); |
472 | else |
473 | sprintf(buffer, "bug%02X", i); |
474 | |
475 | name = kzalloc(strlen(buffer) + 1, GFP_KERNEL); |
476 | if (name == NULL) |
477 | goto fail; |
478 | strncpy(name, buffer, strlen(buffer) + 1); |
479 | |
480 | sysfs_attr_init(&counter_attrs[i].attr); |
481 | counter_attrs[i].attr.name = name; |
482 | counter_attrs[i].attr.mode = 0644; |
483 | counter_attrs[i].show = counter_show; |
484 | counter_attrs[i].store = counter_set; |
485 | |
486 | all_attrs[i] = &counter_attrs[i].attr; |
487 | } |
488 | |
489 | interrupt_stats_attr_group.attrs = all_attrs; |
490 | if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group)) |
491 | return; |
492 | |
493 | fail: |
494 | delete_gpe_attr_array(); |
495 | return; |
496 | } |
497 | |
498 | static void __exit interrupt_stats_exit(void) |
499 | { |
500 | sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group); |
501 | |
502 | delete_gpe_attr_array(); |
503 | |
504 | return; |
505 | } |
506 | |
507 | /* -------------------------------------------------------------------------- |
508 | FS Interface (/proc) |
509 | -------------------------------------------------------------------------- */ |
510 | #ifdef CONFIG_ACPI_PROCFS |
511 | #define ACPI_SYSTEM_FILE_INFO "info" |
512 | #define ACPI_SYSTEM_FILE_EVENT "event" |
513 | #define ACPI_SYSTEM_FILE_DSDT "dsdt" |
514 | #define ACPI_SYSTEM_FILE_FADT "fadt" |
515 | |
516 | static int acpi_system_read_info(struct seq_file *seq, void *offset) |
517 | { |
518 | |
519 | seq_printf(seq, "version: %x\n", ACPI_CA_VERSION); |
520 | return 0; |
521 | } |
522 | |
523 | static int acpi_system_info_open_fs(struct inode *inode, struct file *file) |
524 | { |
525 | return single_open(file, acpi_system_read_info, PDE(inode)->data); |
526 | } |
527 | |
528 | static const struct file_operations acpi_system_info_ops = { |
529 | .owner = THIS_MODULE, |
530 | .open = acpi_system_info_open_fs, |
531 | .read = seq_read, |
532 | .llseek = seq_lseek, |
533 | .release = single_release, |
534 | }; |
535 | |
536 | static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t, |
537 | loff_t *); |
538 | |
539 | static const struct file_operations acpi_system_dsdt_ops = { |
540 | .owner = THIS_MODULE, |
541 | .read = acpi_system_read_dsdt, |
542 | }; |
543 | |
544 | static ssize_t |
545 | acpi_system_read_dsdt(struct file *file, |
546 | char __user * buffer, size_t count, loff_t * ppos) |
547 | { |
548 | acpi_status status = AE_OK; |
549 | struct acpi_table_header *dsdt = NULL; |
550 | ssize_t res; |
551 | |
552 | status = acpi_get_table(ACPI_SIG_DSDT, 1, &dsdt); |
553 | if (ACPI_FAILURE(status)) |
554 | return -ENODEV; |
555 | |
556 | res = simple_read_from_buffer(buffer, count, ppos, dsdt, dsdt->length); |
557 | |
558 | return res; |
559 | } |
560 | |
561 | static ssize_t acpi_system_read_fadt(struct file *, char __user *, size_t, |
562 | loff_t *); |
563 | |
564 | static const struct file_operations acpi_system_fadt_ops = { |
565 | .owner = THIS_MODULE, |
566 | .read = acpi_system_read_fadt, |
567 | }; |
568 | |
569 | static ssize_t |
570 | acpi_system_read_fadt(struct file *file, |
571 | char __user * buffer, size_t count, loff_t * ppos) |
572 | { |
573 | acpi_status status = AE_OK; |
574 | struct acpi_table_header *fadt = NULL; |
575 | ssize_t res; |
576 | |
577 | status = acpi_get_table(ACPI_SIG_FADT, 1, &fadt); |
578 | if (ACPI_FAILURE(status)) |
579 | return -ENODEV; |
580 | |
581 | res = simple_read_from_buffer(buffer, count, ppos, fadt, fadt->length); |
582 | |
583 | return res; |
584 | } |
585 | |
586 | static int acpi_system_procfs_init(void) |
587 | { |
588 | struct proc_dir_entry *entry; |
589 | int error = 0; |
590 | |
591 | /* 'info' [R] */ |
592 | entry = proc_create(ACPI_SYSTEM_FILE_INFO, S_IRUGO, acpi_root_dir, |
593 | &acpi_system_info_ops); |
594 | if (!entry) |
595 | goto Error; |
596 | |
597 | /* 'dsdt' [R] */ |
598 | entry = proc_create(ACPI_SYSTEM_FILE_DSDT, S_IRUSR, acpi_root_dir, |
599 | &acpi_system_dsdt_ops); |
600 | if (!entry) |
601 | goto Error; |
602 | |
603 | /* 'fadt' [R] */ |
604 | entry = proc_create(ACPI_SYSTEM_FILE_FADT, S_IRUSR, acpi_root_dir, |
605 | &acpi_system_fadt_ops); |
606 | if (!entry) |
607 | goto Error; |
608 | |
609 | Done: |
610 | return error; |
611 | |
612 | Error: |
613 | remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir); |
614 | remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir); |
615 | remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir); |
616 | |
617 | error = -EFAULT; |
618 | goto Done; |
619 | } |
620 | #else |
621 | static int acpi_system_procfs_init(void) |
622 | { |
623 | return 0; |
624 | } |
625 | #endif |
626 | |
627 | int __init acpi_system_init(void) |
628 | { |
629 | int result; |
630 | |
631 | result = acpi_system_procfs_init(); |
632 | if (result) |
633 | return result; |
634 | |
635 | result = acpi_system_sysfs_init(); |
636 | |
637 | return result; |
638 | } |
639 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9