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x86/amd-iommu: Fix rounding-bug in __unmap_single
[linux/fpc-iii.git] / drivers / acpi / sysfs.c
blob68e2e4582fa2f18968058c8125704a23f151cb62
1 /*
2 * sysfs.c - ACPI sysfs interface to userspace.
3 */
4
5 #include <linux/init.h>
6 #include <linux/kernel.h>
7 #include <linux/moduleparam.h>
8 #include <acpi/acpi_drivers.h>
9
10 #define _COMPONENT ACPI_SYSTEM_COMPONENT
11 ACPI_MODULE_NAME("sysfs");
12
13 #define PREFIX "ACPI: "
14
15 #ifdef CONFIG_ACPI_DEBUG
16 /*
17 * ACPI debug sysfs I/F, including:
18 * /sys/modules/acpi/parameters/debug_layer
19 * /sys/modules/acpi/parameters/debug_level
20 * /sys/modules/acpi/parameters/trace_method_name
21 * /sys/modules/acpi/parameters/trace_state
22 * /sys/modules/acpi/parameters/trace_debug_layer
23 * /sys/modules/acpi/parameters/trace_debug_level
24 */
25
26 struct acpi_dlayer {
27 const char *name;
28 unsigned long value;
29 };
30 struct acpi_dlevel {
31 const char *name;
32 unsigned long value;
33 };
34 #define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
35
36 static const struct acpi_dlayer acpi_debug_layers[] = {
37 ACPI_DEBUG_INIT(ACPI_UTILITIES),
38 ACPI_DEBUG_INIT(ACPI_HARDWARE),
39 ACPI_DEBUG_INIT(ACPI_EVENTS),
40 ACPI_DEBUG_INIT(ACPI_TABLES),
41 ACPI_DEBUG_INIT(ACPI_NAMESPACE),
42 ACPI_DEBUG_INIT(ACPI_PARSER),
43 ACPI_DEBUG_INIT(ACPI_DISPATCHER),
44 ACPI_DEBUG_INIT(ACPI_EXECUTER),
45 ACPI_DEBUG_INIT(ACPI_RESOURCES),
46 ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
47 ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
48 ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
49 ACPI_DEBUG_INIT(ACPI_COMPILER),
50 ACPI_DEBUG_INIT(ACPI_TOOLS),
51
52 ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
53 ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
54 ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
55 ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
56 ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
57 ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
58 ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
59 ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
60 ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
61 ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
62 ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
63 ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
64 ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
65 ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
66 };
67
68 static const struct acpi_dlevel acpi_debug_levels[] = {
69 ACPI_DEBUG_INIT(ACPI_LV_INIT),
70 ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
71 ACPI_DEBUG_INIT(ACPI_LV_INFO),
72
73 ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
74 ACPI_DEBUG_INIT(ACPI_LV_PARSE),
75 ACPI_DEBUG_INIT(ACPI_LV_LOAD),
76 ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
77 ACPI_DEBUG_INIT(ACPI_LV_EXEC),
78 ACPI_DEBUG_INIT(ACPI_LV_NAMES),
79 ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
80 ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
81 ACPI_DEBUG_INIT(ACPI_LV_TABLES),
82 ACPI_DEBUG_INIT(ACPI_LV_VALUES),
83 ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
84 ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
85 ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
86 ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
87
88 ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
89 ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
90 ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
91
92 ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
93 ACPI_DEBUG_INIT(ACPI_LV_THREADS),
94 ACPI_DEBUG_INIT(ACPI_LV_IO),
95 ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
96
97 ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
98 ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
99 ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
100 ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
101 };
102
103 static int param_get_debug_layer(char *buffer, struct kernel_param *kp)
104 {
105 int result = 0;
106 int i;
107
108 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
109
110 for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
111 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
112 acpi_debug_layers[i].name,
113 acpi_debug_layers[i].value,
114 (acpi_dbg_layer & acpi_debug_layers[i].value)
115 ? '*' : ' ');
116 }
117 result +=
118 sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
119 ACPI_ALL_DRIVERS,
120 (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
121 ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
122 == 0 ? ' ' : '-');
123 result +=
124 sprintf(buffer + result,
125 "--\ndebug_layer = 0x%08X ( * = enabled)\n",
126 acpi_dbg_layer);
127
128 return result;
129 }
130
131 static int param_get_debug_level(char *buffer, struct kernel_param *kp)
132 {
133 int result = 0;
134 int i;
135
136 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
137
138 for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
139 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
140 acpi_debug_levels[i].name,
141 acpi_debug_levels[i].value,
142 (acpi_dbg_level & acpi_debug_levels[i].value)
143 ? '*' : ' ');
144 }
145 result +=
146 sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
147 acpi_dbg_level);
148
149 return result;
150 }
151
152 module_param_call(debug_layer, param_set_uint, param_get_debug_layer,
153 &acpi_dbg_layer, 0644);
154 module_param_call(debug_level, param_set_uint, param_get_debug_level,
155 &acpi_dbg_level, 0644);
156
157 static char trace_method_name[6];
158 module_param_string(trace_method_name, trace_method_name, 6, 0644);
159 static unsigned int trace_debug_layer;
160 module_param(trace_debug_layer, uint, 0644);
161 static unsigned int trace_debug_level;
162 module_param(trace_debug_level, uint, 0644);
163
164 static int param_set_trace_state(const char *val, struct kernel_param *kp)
165 {
166 int result = 0;
167
168 if (!strncmp(val, "enable", strlen("enable") - 1)) {
169 result = acpi_debug_trace(trace_method_name, trace_debug_level,
170 trace_debug_layer, 0);
171 if (result)
172 result = -EBUSY;
173 goto exit;
174 }
175
176 if (!strncmp(val, "disable", strlen("disable") - 1)) {
177 int name = 0;
178 result = acpi_debug_trace((char *)&name, trace_debug_level,
179 trace_debug_layer, 0);
180 if (result)
181 result = -EBUSY;
182 goto exit;
183 }
184
185 if (!strncmp(val, "1", 1)) {
186 result = acpi_debug_trace(trace_method_name, trace_debug_level,
187 trace_debug_layer, 1);
188 if (result)
189 result = -EBUSY;
190 goto exit;
191 }
192
193 result = -EINVAL;
194 exit:
195 return result;
196 }
197
198 static int param_get_trace_state(char *buffer, struct kernel_param *kp)
199 {
200 if (!acpi_gbl_trace_method_name)
201 return sprintf(buffer, "disable");
202 else {
203 if (acpi_gbl_trace_flags & 1)
204 return sprintf(buffer, "1");
205 else
206 return sprintf(buffer, "enable");
207 }
208 return 0;
209 }
210
211 module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
212 NULL, 0644);
213 #endif /* CONFIG_ACPI_DEBUG */
214
215 /* /sys/module/acpi/parameters/acpica_version */
216 static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
217 {
218 int result;
219
220 result = sprintf(buffer, "%x", ACPI_CA_VERSION);
221
222 return result;
223 }
224
225 module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
226
227 /*
228 * ACPI table sysfs I/F:
229 * /sys/firmware/acpi/tables/
230 * /sys/firmware/acpi/tables/dynamic/
231 */
232
233 static LIST_HEAD(acpi_table_attr_list);
234 static struct kobject *tables_kobj;
235 static struct kobject *dynamic_tables_kobj;
236
237 struct acpi_table_attr {
238 struct bin_attribute attr;
239 char name[8];
240 int instance;
241 struct list_head node;
242 };
243
244 static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
245 struct bin_attribute *bin_attr, char *buf,
246 loff_t offset, size_t count)
247 {
248 struct acpi_table_attr *table_attr =
249 container_of(bin_attr, struct acpi_table_attr, attr);
250 struct acpi_table_header *table_header = NULL;
251 acpi_status status;
252 char name[ACPI_NAME_SIZE];
253
254 if (strncmp(table_attr->name, "NULL", 4))
255 memcpy(name, table_attr->name, ACPI_NAME_SIZE);
256 else
257 memcpy(name, "\0\0\0\0", 4);
258
259 status = acpi_get_table(name, table_attr->instance, &table_header);
260 if (ACPI_FAILURE(status))
261 return -ENODEV;
262
263 return memory_read_from_buffer(buf, count, &offset,
264 table_header, table_header->length);
265 }
266
267 static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
268 struct acpi_table_header *table_header)
269 {
270 struct acpi_table_header *header = NULL;
271 struct acpi_table_attr *attr = NULL;
272
273 sysfs_attr_init(&table_attr->attr.attr);
274 if (table_header->signature[0] != '\0')
275 memcpy(table_attr->name, table_header->signature,
276 ACPI_NAME_SIZE);
277 else
278 memcpy(table_attr->name, "NULL", 4);
279
280 list_for_each_entry(attr, &acpi_table_attr_list, node) {
281 if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
282 if (table_attr->instance < attr->instance)
283 table_attr->instance = attr->instance;
284 }
285 table_attr->instance++;
286
287 if (table_attr->instance > 1 || (table_attr->instance == 1 &&
288 !acpi_get_table
289 (table_header->signature, 2, &header)))
290 sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
291 table_attr->instance);
292
293 table_attr->attr.size = 0;
294 table_attr->attr.read = acpi_table_show;
295 table_attr->attr.attr.name = table_attr->name;
296 table_attr->attr.attr.mode = 0400;
297
298 return;
299 }
300
301 static acpi_status
302 acpi_sysfs_table_handler(u32 event, void *table, void *context)
303 {
304 struct acpi_table_attr *table_attr;
305
306 switch (event) {
307 case ACPI_TABLE_EVENT_LOAD:
308 table_attr =
309 kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
310 if (!table_attr)
311 return AE_NO_MEMORY;
312
313 acpi_table_attr_init(table_attr, table);
314 if (sysfs_create_bin_file(dynamic_tables_kobj,
315 &table_attr->attr)) {
316 kfree(table_attr);
317 return AE_ERROR;
318 } else
319 list_add_tail(&table_attr->node, &acpi_table_attr_list);
320 break;
321 case ACPI_TABLE_EVENT_UNLOAD:
322 /*
323 * we do not need to do anything right now
324 * because the table is not deleted from the
325 * global table list when unloading it.
326 */
327 break;
328 default:
329 return AE_BAD_PARAMETER;
330 }
331 return AE_OK;
332 }
333
334 static int acpi_tables_sysfs_init(void)
335 {
336 struct acpi_table_attr *table_attr;
337 struct acpi_table_header *table_header = NULL;
338 int table_index = 0;
339 int result;
340
341 tables_kobj = kobject_create_and_add("tables", acpi_kobj);
342 if (!tables_kobj)
343 goto err;
344
345 dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
346 if (!dynamic_tables_kobj)
347 goto err_dynamic_tables;
348
349 do {
350 result = acpi_get_table_by_index(table_index, &table_header);
351 if (!result) {
352 table_index++;
353 table_attr = NULL;
354 table_attr =
355 kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
356 if (!table_attr)
357 return -ENOMEM;
358
359 acpi_table_attr_init(table_attr, table_header);
360 result =
361 sysfs_create_bin_file(tables_kobj,
362 &table_attr->attr);
363 if (result) {
364 kfree(table_attr);
365 return result;
366 } else
367 list_add_tail(&table_attr->node,
368 &acpi_table_attr_list);
369 }
370 } while (!result);
371 kobject_uevent(tables_kobj, KOBJ_ADD);
372 kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
373 result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
374
375 return result == AE_OK ? 0 : -EINVAL;
376 err_dynamic_tables:
377 kobject_put(tables_kobj);
378 err:
379 return -ENOMEM;
380 }
381
382 /*
383 * Detailed ACPI IRQ counters:
384 * /sys/firmware/acpi/interrupts/
385 */
386
387 u32 acpi_irq_handled;
388 u32 acpi_irq_not_handled;
389
390 #define COUNT_GPE 0
391 #define COUNT_SCI 1 /* acpi_irq_handled */
392 #define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */
393 #define COUNT_ERROR 3 /* other */
394 #define NUM_COUNTERS_EXTRA 4
395
396 struct event_counter {
397 u32 count;
398 u32 flags;
399 };
400
401 static struct event_counter *all_counters;
402 static u32 num_gpes;
403 static u32 num_counters;
404 static struct attribute **all_attrs;
405 static u32 acpi_gpe_count;
406
407 static struct attribute_group interrupt_stats_attr_group = {
408 .name = "interrupts",
409 };
410
411 static struct kobj_attribute *counter_attrs;
412
413 static void delete_gpe_attr_array(void)
414 {
415 struct event_counter *tmp = all_counters;
416
417 all_counters = NULL;
418 kfree(tmp);
419
420 if (counter_attrs) {
421 int i;
422
423 for (i = 0; i < num_gpes; i++)
424 kfree(counter_attrs[i].attr.name);
425
426 kfree(counter_attrs);
427 }
428 kfree(all_attrs);
429
430 return;
431 }
432
433 void acpi_os_gpe_count(u32 gpe_number)
434 {
435 acpi_gpe_count++;
436
437 if (!all_counters)
438 return;
439
440 if (gpe_number < num_gpes)
441 all_counters[gpe_number].count++;
442 else
443 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
444 COUNT_ERROR].count++;
445
446 return;
447 }
448
449 void acpi_os_fixed_event_count(u32 event_number)
450 {
451 if (!all_counters)
452 return;
453
454 if (event_number < ACPI_NUM_FIXED_EVENTS)
455 all_counters[num_gpes + event_number].count++;
456 else
457 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
458 COUNT_ERROR].count++;
459
460 return;
461 }
462
463 static int get_status(u32 index, acpi_event_status *status,
464 acpi_handle *handle)
465 {
466 int result = 0;
467
468 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
469 goto end;
470
471 if (index < num_gpes) {
472 result = acpi_get_gpe_device(index, handle);
473 if (result) {
474 ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
475 "Invalid GPE 0x%x\n", index));
476 goto end;
477 }
478 result = acpi_get_gpe_status(*handle, index, status);
479 } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
480 result = acpi_get_event_status(index - num_gpes, status);
481
482 end:
483 return result;
484 }
485
486 static ssize_t counter_show(struct kobject *kobj,
487 struct kobj_attribute *attr, char *buf)
488 {
489 int index = attr - counter_attrs;
490 int size;
491 acpi_handle handle;
492 acpi_event_status status;
493 int result = 0;
494
495 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
496 acpi_irq_handled;
497 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
498 acpi_irq_not_handled;
499 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
500 acpi_gpe_count;
501 size = sprintf(buf, "%8d", all_counters[index].count);
502
503 /* "gpe_all" or "sci" */
504 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
505 goto end;
506
507 result = get_status(index, &status, &handle);
508 if (result)
509 goto end;
510
511 if (!(status & ACPI_EVENT_FLAG_HANDLE))
512 size += sprintf(buf + size, " invalid");
513 else if (status & ACPI_EVENT_FLAG_ENABLED)
514 size += sprintf(buf + size, " enabled");
515 else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
516 size += sprintf(buf + size, " wake_enabled");
517 else
518 size += sprintf(buf + size, " disabled");
519
520 end:
521 size += sprintf(buf + size, "\n");
522 return result ? result : size;
523 }
524
525 /*
526 * counter_set() sets the specified counter.
527 * setting the total "sci" file to any value clears all counters.
528 * enable/disable/clear a gpe/fixed event in user space.
529 */
530 static ssize_t counter_set(struct kobject *kobj,
531 struct kobj_attribute *attr, const char *buf,
532 size_t size)
533 {
534 int index = attr - counter_attrs;
535 acpi_event_status status;
536 acpi_handle handle;
537 int result = 0;
538
539 if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
540 int i;
541 for (i = 0; i < num_counters; ++i)
542 all_counters[i].count = 0;
543 acpi_gpe_count = 0;
544 acpi_irq_handled = 0;
545 acpi_irq_not_handled = 0;
546 goto end;
547 }
548
549 /* show the event status for both GPEs and Fixed Events */
550 result = get_status(index, &status, &handle);
551 if (result)
552 goto end;
553
554 if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
555 printk(KERN_WARNING PREFIX
556 "Can not change Invalid GPE/Fixed Event status\n");
557 return -EINVAL;
558 }
559
560 if (index < num_gpes) {
561 if (!strcmp(buf, "disable\n") &&
562 (status & ACPI_EVENT_FLAG_ENABLED))
563 result = acpi_disable_gpe(handle, index);
564 else if (!strcmp(buf, "enable\n") &&
565 !(status & ACPI_EVENT_FLAG_ENABLED))
566 result = acpi_enable_gpe(handle, index);
567 else if (!strcmp(buf, "clear\n") &&
568 (status & ACPI_EVENT_FLAG_SET))
569 result = acpi_clear_gpe(handle, index);
570 else
571 all_counters[index].count = strtoul(buf, NULL, 0);
572 } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
573 int event = index - num_gpes;
574 if (!strcmp(buf, "disable\n") &&
575 (status & ACPI_EVENT_FLAG_ENABLED))
576 result = acpi_disable_event(event, ACPI_NOT_ISR);
577 else if (!strcmp(buf, "enable\n") &&
578 !(status & ACPI_EVENT_FLAG_ENABLED))
579 result = acpi_enable_event(event, ACPI_NOT_ISR);
580 else if (!strcmp(buf, "clear\n") &&
581 (status & ACPI_EVENT_FLAG_SET))
582 result = acpi_clear_event(event);
583 else
584 all_counters[index].count = strtoul(buf, NULL, 0);
585 } else
586 all_counters[index].count = strtoul(buf, NULL, 0);
587
588 if (ACPI_FAILURE(result))
589 result = -EINVAL;
590 end:
591 return result ? result : size;
592 }
593
594 void acpi_irq_stats_init(void)
595 {
596 int i;
597
598 if (all_counters)
599 return;
600
601 num_gpes = acpi_current_gpe_count;
602 num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
603
604 all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
605 GFP_KERNEL);
606 if (all_attrs == NULL)
607 return;
608
609 all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
610 GFP_KERNEL);
611 if (all_counters == NULL)
612 goto fail;
613
614 counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
615 GFP_KERNEL);
616 if (counter_attrs == NULL)
617 goto fail;
618
619 for (i = 0; i < num_counters; ++i) {
620 char buffer[12];
621 char *name;
622
623 if (i < num_gpes)
624 sprintf(buffer, "gpe%02X", i);
625 else if (i == num_gpes + ACPI_EVENT_PMTIMER)
626 sprintf(buffer, "ff_pmtimer");
627 else if (i == num_gpes + ACPI_EVENT_GLOBAL)
628 sprintf(buffer, "ff_gbl_lock");
629 else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
630 sprintf(buffer, "ff_pwr_btn");
631 else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
632 sprintf(buffer, "ff_slp_btn");
633 else if (i == num_gpes + ACPI_EVENT_RTC)
634 sprintf(buffer, "ff_rt_clk");
635 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
636 sprintf(buffer, "gpe_all");
637 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
638 sprintf(buffer, "sci");
639 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
640 sprintf(buffer, "sci_not");
641 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
642 sprintf(buffer, "error");
643 else
644 sprintf(buffer, "bug%02X", i);
645
646 name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
647 if (name == NULL)
648 goto fail;
649 strncpy(name, buffer, strlen(buffer) + 1);
650
651 sysfs_attr_init(&counter_attrs[i].attr);
652 counter_attrs[i].attr.name = name;
653 counter_attrs[i].attr.mode = 0644;
654 counter_attrs[i].show = counter_show;
655 counter_attrs[i].store = counter_set;
656
657 all_attrs[i] = &counter_attrs[i].attr;
658 }
659
660 interrupt_stats_attr_group.attrs = all_attrs;
661 if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
662 return;
663
664 fail:
665 delete_gpe_attr_array();
666 return;
667 }
668
669 static void __exit interrupt_stats_exit(void)
670 {
671 sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
672
673 delete_gpe_attr_array();
674
675 return;
676 }
677
678 int __init acpi_sysfs_init(void)
679 {
680 int result;
681
682 result = acpi_tables_sysfs_init();
683
684 return result;
685 }
Linux with added FPC-III support