Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/drivers/hid/hid-core.c

  1 /*
  2  *  HID support for Linux
  3  *
  4  *  Copyright (c) 1999 Andreas Gal
  5  *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
  6  *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
  7  *  Copyright (c) 2006-2012 Jiri Kosina
  8  */
  9 
 10 /*
 11  * This program is free software; you can redistribute it and/or modify it
 12  * under the terms of the GNU General Public License as published by the Free
 13  * Software Foundation; either version 2 of the License, or (at your option)
 14  * any later version.
 15  */
 16 
 17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 18 
 19 #include <linux/module.h>
 20 #include <linux/slab.h>
 21 #include <linux/init.h>
 22 #include <linux/kernel.h>
 23 #include <linux/list.h>
 24 #include <linux/mm.h>
 25 #include <linux/spinlock.h>
 26 #include <asm/unaligned.h>
 27 #include <asm/byteorder.h>
 28 #include <linux/input.h>
 29 #include <linux/wait.h>
 30 #include <linux/vmalloc.h>
 31 #include <linux/sched.h>
 32 #include <linux/semaphore.h>
 33 
 34 #include <linux/hid.h>
 35 #include <linux/hiddev.h>
 36 #include <linux/hid-debug.h>
 37 #include <linux/hidraw.h>
 38 
 39 #include "hid-ids.h"
 40 
 41 /*
 42  * Version Information
 43  */
 44 
 45 #define DRIVER_DESC "HID core driver"
 46 #define DRIVER_LICENSE "GPL"
 47 
 48 int hid_debug = 0;
 49 module_param_named(debug, hid_debug, int, 0600);
 50 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
 51 EXPORT_SYMBOL_GPL(hid_debug);
 52 
 53 static int hid_ignore_special_drivers = 0;
 54 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
 55 MODULE_PARM_DESC(debug, "Ignore any special drivers and handle all devices by generic driver");
 56 
 57 /*
 58  * Register a new report for a device.
 59  */
 60 
 61 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
 62 {
 63         struct hid_report_enum *report_enum = device->report_enum + type;
 64         struct hid_report *report;
 65 
 66         if (id >= HID_MAX_IDS)
 67                 return NULL;
 68         if (report_enum->report_id_hash[id])
 69                 return report_enum->report_id_hash[id];
 70 
 71         report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
 72         if (!report)
 73                 return NULL;
 74 
 75         if (id != 0)
 76                 report_enum->numbered = 1;
 77 
 78         report->id = id;
 79         report->type = type;
 80         report->size = 0;
 81         report->device = device;
 82         report_enum->report_id_hash[id] = report;
 83 
 84         list_add_tail(&report->list, &report_enum->report_list);
 85 
 86         return report;
 87 }
 88 EXPORT_SYMBOL_GPL(hid_register_report);
 89 
 90 /*
 91  * Register a new field for this report.
 92  */
 93 
 94 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
 95 {
 96         struct hid_field *field;
 97 
 98         if (report->maxfield == HID_MAX_FIELDS) {
 99                 hid_err(report->device, "too many fields in report\n");
100                 return NULL;
101         }
102 
103         field = kzalloc((sizeof(struct hid_field) +
104                          usages * sizeof(struct hid_usage) +
105                          values * sizeof(unsigned)), GFP_KERNEL);
106         if (!field)
107                 return NULL;
108 
109         field->index = report->maxfield++;
110         report->field[field->index] = field;
111         field->usage = (struct hid_usage *)(field + 1);
112         field->value = (s32 *)(field->usage + usages);
113         field->report = report;
114 
115         return field;
116 }
117 
118 /*
119  * Open a collection. The type/usage is pushed on the stack.
120  */
121 
122 static int open_collection(struct hid_parser *parser, unsigned type)
123 {
124         struct hid_collection *collection;
125         unsigned usage;
126 
127         usage = parser->local.usage[0];
128 
129         if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
130                 hid_err(parser->device, "collection stack overflow\n");
131                 return -EINVAL;
132         }
133 
134         if (parser->device->maxcollection == parser->device->collection_size) {
135                 collection = kmalloc(sizeof(struct hid_collection) *
136                                 parser->device->collection_size * 2, GFP_KERNEL);
137                 if (collection == NULL) {
138                         hid_err(parser->device, "failed to reallocate collection array\n");
139                         return -ENOMEM;
140                 }
141                 memcpy(collection, parser->device->collection,
142                         sizeof(struct hid_collection) *
143                         parser->device->collection_size);
144                 memset(collection + parser->device->collection_size, 0,
145                         sizeof(struct hid_collection) *
146                         parser->device->collection_size);
147                 kfree(parser->device->collection);
148                 parser->device->collection = collection;
149                 parser->device->collection_size *= 2;
150         }
151 
152         parser->collection_stack[parser->collection_stack_ptr++] =
153                 parser->device->maxcollection;
154 
155         collection = parser->device->collection +
156                 parser->device->maxcollection++;
157         collection->type = type;
158         collection->usage = usage;
159         collection->level = parser->collection_stack_ptr - 1;
160 
161         if (type == HID_COLLECTION_APPLICATION)
162                 parser->device->maxapplication++;
163 
164         return 0;
165 }
166 
167 /*
168  * Close a collection.
169  */
170 
171 static int close_collection(struct hid_parser *parser)
172 {
173         if (!parser->collection_stack_ptr) {
174                 hid_err(parser->device, "collection stack underflow\n");
175                 return -EINVAL;
176         }
177         parser->collection_stack_ptr--;
178         return 0;
179 }
180 
181 /*
182  * Climb up the stack, search for the specified collection type
183  * and return the usage.
184  */
185 
186 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
187 {
188         struct hid_collection *collection = parser->device->collection;
189         int n;
190 
191         for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
192                 unsigned index = parser->collection_stack[n];
193                 if (collection[index].type == type)
194                         return collection[index].usage;
195         }
196         return 0; /* we know nothing about this usage type */
197 }
198 
199 /*
200  * Add a usage to the temporary parser table.
201  */
202 
203 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
204 {
205         if (parser->local.usage_index >= HID_MAX_USAGES) {
206                 hid_err(parser->device, "usage index exceeded\n");
207                 return -1;
208         }
209         parser->local.usage[parser->local.usage_index] = usage;
210         parser->local.collection_index[parser->local.usage_index] =
211                 parser->collection_stack_ptr ?
212                 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
213         parser->local.usage_index++;
214         return 0;
215 }
216 
217 /*
218  * Register a new field for this report.
219  */
220 
221 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
222 {
223         struct hid_report *report;
224         struct hid_field *field;
225         unsigned usages;
226         unsigned offset;
227         unsigned i;
228 
229         report = hid_register_report(parser->device, report_type, parser->global.report_id);
230         if (!report) {
231                 hid_err(parser->device, "hid_register_report failed\n");
232                 return -1;
233         }
234 
235         /* Handle both signed and unsigned cases properly */
236         if ((parser->global.logical_minimum < 0 &&
237                 parser->global.logical_maximum <
238                 parser->global.logical_minimum) ||
239                 (parser->global.logical_minimum >= 0 &&
240                 (__u32)parser->global.logical_maximum <
241                 (__u32)parser->global.logical_minimum)) {
242                 dbg_hid("logical range invalid 0x%x 0x%x\n",
243                         parser->global.logical_minimum,
244                         parser->global.logical_maximum);
245                 return -1;
246         }
247 
248         offset = report->size;
249         report->size += parser->global.report_size * parser->global.report_count;
250 
251         if (!parser->local.usage_index) /* Ignore padding fields */
252                 return 0;
253 
254         usages = max_t(unsigned, parser->local.usage_index,
255                                  parser->global.report_count);
256 
257         field = hid_register_field(report, usages, parser->global.report_count);
258         if (!field)
259                 return 0;
260 
261         field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
262         field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
263         field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
264 
265         for (i = 0; i < usages; i++) {
266                 unsigned j = i;
267                 /* Duplicate the last usage we parsed if we have excess values */
268                 if (i >= parser->local.usage_index)
269                         j = parser->local.usage_index - 1;
270                 field->usage[i].hid = parser->local.usage[j];
271                 field->usage[i].collection_index =
272                         parser->local.collection_index[j];
273                 field->usage[i].usage_index = i;
274         }
275 
276         field->maxusage = usages;
277         field->flags = flags;
278         field->report_offset = offset;
279         field->report_type = report_type;
280         field->report_size = parser->global.report_size;
281         field->report_count = parser->global.report_count;
282         field->logical_minimum = parser->global.logical_minimum;
283         field->logical_maximum = parser->global.logical_maximum;
284         field->physical_minimum = parser->global.physical_minimum;
285         field->physical_maximum = parser->global.physical_maximum;
286         field->unit_exponent = parser->global.unit_exponent;
287         field->unit = parser->global.unit;
288 
289         return 0;
290 }
291 
292 /*
293  * Read data value from item.
294  */
295 
296 static u32 item_udata(struct hid_item *item)
297 {
298         switch (item->size) {
299         case 1: return item->data.u8;
300         case 2: return item->data.u16;
301         case 4: return item->data.u32;
302         }
303         return 0;
304 }
305 
306 static s32 item_sdata(struct hid_item *item)
307 {
308         switch (item->size) {
309         case 1: return item->data.s8;
310         case 2: return item->data.s16;
311         case 4: return item->data.s32;
312         }
313         return 0;
314 }
315 
316 /*
317  * Process a global item.
318  */
319 
320 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
321 {
322         __s32 raw_value;
323         switch (item->tag) {
324         case HID_GLOBAL_ITEM_TAG_PUSH:
325 
326                 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
327                         hid_err(parser->device, "global environment stack overflow\n");
328                         return -1;
329                 }
330 
331                 memcpy(parser->global_stack + parser->global_stack_ptr++,
332                         &parser->global, sizeof(struct hid_global));
333                 return 0;
334 
335         case HID_GLOBAL_ITEM_TAG_POP:
336 
337                 if (!parser->global_stack_ptr) {
338                         hid_err(parser->device, "global environment stack underflow\n");
339                         return -1;
340                 }
341 
342                 memcpy(&parser->global, parser->global_stack +
343                         --parser->global_stack_ptr, sizeof(struct hid_global));
344                 return 0;
345 
346         case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
347                 parser->global.usage_page = item_udata(item);
348                 return 0;
349 
350         case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
351                 parser->global.logical_minimum = item_sdata(item);
352                 return 0;
353 
354         case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
355                 if (parser->global.logical_minimum < 0)
356                         parser->global.logical_maximum = item_sdata(item);
357                 else
358                         parser->global.logical_maximum = item_udata(item);
359                 return 0;
360 
361         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
362                 parser->global.physical_minimum = item_sdata(item);
363                 return 0;
364 
365         case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
366                 if (parser->global.physical_minimum < 0)
367                         parser->global.physical_maximum = item_sdata(item);
368                 else
369                         parser->global.physical_maximum = item_udata(item);
370                 return 0;
371 
372         case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
373                 /* Many devices provide unit exponent as a two's complement
374                  * nibble due to the common misunderstanding of HID
375                  * specification 1.11, 6.2.2.7 Global Items. Attempt to handle
376                  * both this and the standard encoding. */
377                 raw_value = item_sdata(item);
378                 if (!(raw_value & 0xfffffff0))
379                         parser->global.unit_exponent = hid_snto32(raw_value, 4);
380                 else
381                         parser->global.unit_exponent = raw_value;
382                 return 0;
383 
384         case HID_GLOBAL_ITEM_TAG_UNIT:
385                 parser->global.unit = item_udata(item);
386                 return 0;
387 
388         case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
389                 parser->global.report_size = item_udata(item);
390                 if (parser->global.report_size > 128) {
391                         hid_err(parser->device, "invalid report_size %d\n",
392                                         parser->global.report_size);
393                         return -1;
394                 }
395                 return 0;
396 
397         case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
398                 parser->global.report_count = item_udata(item);
399                 if (parser->global.report_count > HID_MAX_USAGES) {
400                         hid_err(parser->device, "invalid report_count %d\n",
401                                         parser->global.report_count);
402                         return -1;
403                 }
404                 return 0;
405 
406         case HID_GLOBAL_ITEM_TAG_REPORT_ID:
407                 parser->global.report_id = item_udata(item);
408                 if (parser->global.report_id == 0 ||
409                     parser->global.report_id >= HID_MAX_IDS) {
410                         hid_err(parser->device, "report_id %u is invalid\n",
411                                 parser->global.report_id);
412                         return -1;
413                 }
414                 return 0;
415 
416         default:
417                 hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
418                 return -1;
419         }
420 }
421 
422 /*
423  * Process a local item.
424  */
425 
426 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
427 {
428         __u32 data;
429         unsigned n;
430 
431         data = item_udata(item);
432 
433         switch (item->tag) {
434         case HID_LOCAL_ITEM_TAG_DELIMITER:
435 
436                 if (data) {
437                         /*
438                          * We treat items before the first delimiter
439                          * as global to all usage sets (branch 0).
440                          * In the moment we process only these global
441                          * items and the first delimiter set.
442                          */
443                         if (parser->local.delimiter_depth != 0) {
444                                 hid_err(parser->device, "nested delimiters\n");
445                                 return -1;
446                         }
447                         parser->local.delimiter_depth++;
448                         parser->local.delimiter_branch++;
449                 } else {
450                         if (parser->local.delimiter_depth < 1) {
451                                 hid_err(parser->device, "bogus close delimiter\n");
452                                 return -1;
453                         }
454                         parser->local.delimiter_depth--;
455                 }
456                 return 0;
457 
458         case HID_LOCAL_ITEM_TAG_USAGE:
459 
460                 if (parser->local.delimiter_branch > 1) {
461                         dbg_hid("alternative usage ignored\n");
462                         return 0;
463                 }
464 
465                 if (item->size <= 2)
466                         data = (parser->global.usage_page << 16) + data;
467 
468                 return hid_add_usage(parser, data);
469 
470         case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
471 
472                 if (parser->local.delimiter_branch > 1) {
473                         dbg_hid("alternative usage ignored\n");
474                         return 0;
475                 }
476 
477                 if (item->size <= 2)
478                         data = (parser->global.usage_page << 16) + data;
479 
480                 parser->local.usage_minimum = data;
481                 return 0;
482 
483         case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
484 
485                 if (parser->local.delimiter_branch > 1) {
486                         dbg_hid("alternative usage ignored\n");
487                         return 0;
488                 }
489 
490                 if (item->size <= 2)
491                         data = (parser->global.usage_page << 16) + data;
492 
493                 for (n = parser->local.usage_minimum; n <= data; n++)
494                         if (hid_add_usage(parser, n)) {
495                                 dbg_hid("hid_add_usage failed\n");
496                                 return -1;
497                         }
498                 return 0;
499 
500         default:
501 
502                 dbg_hid("unknown local item tag 0x%x\n", item->tag);
503                 return 0;
504         }
505         return 0;
506 }
507 
508 /*
509  * Process a main item.
510  */
511 
512 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
513 {
514         __u32 data;
515         int ret;
516 
517         data = item_udata(item);
518 
519         switch (item->tag) {
520         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
521                 ret = open_collection(parser, data & 0xff);
522                 break;
523         case HID_MAIN_ITEM_TAG_END_COLLECTION:
524                 ret = close_collection(parser);
525                 break;
526         case HID_MAIN_ITEM_TAG_INPUT:
527                 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
528                 break;
529         case HID_MAIN_ITEM_TAG_OUTPUT:
530                 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
531                 break;
532         case HID_MAIN_ITEM_TAG_FEATURE:
533                 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
534                 break;
535         default:
536                 hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
537                 ret = 0;
538         }
539 
540         memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
541 
542         return ret;
543 }
544 
545 /*
546  * Process a reserved item.
547  */
548 
549 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
550 {
551         dbg_hid("reserved item type, tag 0x%x\n", item->tag);
552         return 0;
553 }
554 
555 /*
556  * Free a report and all registered fields. The field->usage and
557  * field->value table's are allocated behind the field, so we need
558  * only to free(field) itself.
559  */
560 
561 static void hid_free_report(struct hid_report *report)
562 {
563         unsigned n;
564 
565         for (n = 0; n < report->maxfield; n++)
566                 kfree(report->field[n]);
567         kfree(report);
568 }
569 
570 /*
571  * Close report. This function returns the device
572  * state to the point prior to hid_open_report().
573  */
574 static void hid_close_report(struct hid_device *device)
575 {
576         unsigned i, j;
577 
578         for (i = 0; i < HID_REPORT_TYPES; i++) {
579                 struct hid_report_enum *report_enum = device->report_enum + i;
580 
581                 for (j = 0; j < HID_MAX_IDS; j++) {
582                         struct hid_report *report = report_enum->report_id_hash[j];
583                         if (report)
584                                 hid_free_report(report);
585                 }
586                 memset(report_enum, 0, sizeof(*report_enum));
587                 INIT_LIST_HEAD(&report_enum->report_list);
588         }
589 
590         kfree(device->rdesc);
591         device->rdesc = NULL;
592         device->rsize = 0;
593 
594         kfree(device->collection);
595         device->collection = NULL;
596         device->collection_size = 0;
597         device->maxcollection = 0;
598         device->maxapplication = 0;
599 
600         device->status &= ~HID_STAT_PARSED;
601 }
602 
603 /*
604  * Free a device structure, all reports, and all fields.
605  */
606 
607 static void hid_device_release(struct device *dev)
608 {
609         struct hid_device *hid = container_of(dev, struct hid_device, dev);
610 
611         hid_close_report(hid);
612         kfree(hid->dev_rdesc);
613         kfree(hid);
614 }
615 
616 /*
617  * Fetch a report description item from the data stream. We support long
618  * items, though they are not used yet.
619  */
620 
621 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
622 {
623         u8 b;
624 
625         if ((end - start) <= 0)
626                 return NULL;
627 
628         b = *start++;
629 
630         item->type = (b >> 2) & 3;
631         item->tag  = (b >> 4) & 15;
632 
633         if (item->tag == HID_ITEM_TAG_LONG) {
634 
635                 item->format = HID_ITEM_FORMAT_LONG;
636 
637                 if ((end - start) < 2)
638                         return NULL;
639 
640                 item->size = *start++;
641                 item->tag  = *start++;
642 
643                 if ((end - start) < item->size)
644                         return NULL;
645 
646                 item->data.longdata = start;
647                 start += item->size;
648                 return start;
649         }
650 
651         item->format = HID_ITEM_FORMAT_SHORT;
652         item->size = b & 3;
653 
654         switch (item->size) {
655         case 0:
656                 return start;
657 
658         case 1:
659                 if ((end - start) < 1)
660                         return NULL;
661                 item->data.u8 = *start++;
662                 return start;
663 
664         case 2:
665                 if ((end - start) < 2)
666                         return NULL;
667                 item->data.u16 = get_unaligned_le16(start);
668                 start = (__u8 *)((__le16 *)start + 1);
669                 return start;
670 
671         case 3:
672                 item->size++;
673                 if ((end - start) < 4)
674                         return NULL;
675                 item->data.u32 = get_unaligned_le32(start);
676                 start = (__u8 *)((__le32 *)start + 1);
677                 return start;
678         }
679 
680         return NULL;
681 }
682 
683 static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
684 {
685         struct hid_device *hid = parser->device;
686 
687         if (usage == HID_DG_CONTACTID)
688                 hid->group = HID_GROUP_MULTITOUCH;
689 }
690 
691 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
692 {
693         if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
694             parser->global.report_size == 8)
695                 parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
696 }
697 
698 static void hid_scan_collection(struct hid_parser *parser, unsigned type)
699 {
700         struct hid_device *hid = parser->device;
701 
702         if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
703             type == HID_COLLECTION_PHYSICAL)
704                 hid->group = HID_GROUP_SENSOR_HUB;
705 }
706 
707 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
708 {
709         __u32 data;
710         int i;
711 
712         data = item_udata(item);
713 
714         switch (item->tag) {
715         case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
716                 hid_scan_collection(parser, data & 0xff);
717                 break;
718         case HID_MAIN_ITEM_TAG_END_COLLECTION:
719                 break;
720         case HID_MAIN_ITEM_TAG_INPUT:
721                 /* ignore constant inputs, they will be ignored by hid-input */
722                 if (data & HID_MAIN_ITEM_CONSTANT)
723                         break;
724                 for (i = 0; i < parser->local.usage_index; i++)
725                         hid_scan_input_usage(parser, parser->local.usage[i]);
726                 break;
727         case HID_MAIN_ITEM_TAG_OUTPUT:
728                 break;
729         case HID_MAIN_ITEM_TAG_FEATURE:
730                 for (i = 0; i < parser->local.usage_index; i++)
731                         hid_scan_feature_usage(parser, parser->local.usage[i]);
732                 break;
733         }
734 
735         /* Reset the local parser environment */
736         memset(&parser->local, 0, sizeof(parser->local));
737 
738         return 0;
739 }
740 
741 /*
742  * Scan a report descriptor before the device is added to the bus.
743  * Sets device groups and other properties that determine what driver
744  * to load.
745  */
746 static int hid_scan_report(struct hid_device *hid)
747 {
748         struct hid_parser *parser;
749         struct hid_item item;
750         __u8 *start = hid->dev_rdesc;
751         __u8 *end = start + hid->dev_rsize;
752         static int (*dispatch_type[])(struct hid_parser *parser,
753                                       struct hid_item *item) = {
754                 hid_scan_main,
755                 hid_parser_global,
756                 hid_parser_local,
757                 hid_parser_reserved
758         };
759 
760         parser = vzalloc(sizeof(struct hid_parser));
761         if (!parser)
762                 return -ENOMEM;
763 
764         parser->device = hid;
765         hid->group = HID_GROUP_GENERIC;
766 
767         /*
768          * The parsing is simpler than the one in hid_open_report() as we should
769          * be robust against hid errors. Those errors will be raised by
770          * hid_open_report() anyway.
771          */
772         while ((start = fetch_item(start, end, &item)) != NULL)
773                 dispatch_type[item.type](parser, &item);
774 
775         /*
776          * Handle special flags set during scanning.
777          */
778         if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
779             (hid->group == HID_GROUP_MULTITOUCH))
780                 hid->group = HID_GROUP_MULTITOUCH_WIN_8;
781 
782         /*
783         * Vendor specific handlings
784         */
785         if ((hid->vendor == USB_VENDOR_ID_SYNAPTICS) &&
786             (hid->group == HID_GROUP_GENERIC) &&
787             /* only bind to the mouse interface of composite USB devices */
788             (hid->bus != BUS_USB || hid->type == HID_TYPE_USBMOUSE))
789                 /* hid-rmi should take care of them, not hid-generic */
790                 hid->group = HID_GROUP_RMI;
791 
792         /*
793          * Vendor specific handlings
794          */
795         switch (hid->vendor) {
796         case USB_VENDOR_ID_WACOM:
797                 hid->group = HID_GROUP_WACOM;
798                 break;
799         }
800 
801         vfree(parser);
802         return 0;
803 }
804 
805 /**
806  * hid_parse_report - parse device report
807  *
808  * @device: hid device
809  * @start: report start
810  * @size: report size
811  *
812  * Allocate the device report as read by the bus driver. This function should
813  * only be called from parse() in ll drivers.
814  */
815 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
816 {
817         hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
818         if (!hid->dev_rdesc)
819                 return -ENOMEM;
820         hid->dev_rsize = size;
821         return 0;
822 }
823 EXPORT_SYMBOL_GPL(hid_parse_report);
824 
825 static const char * const hid_report_names[] = {
826         "HID_INPUT_REPORT",
827         "HID_OUTPUT_REPORT",
828         "HID_FEATURE_REPORT",
829 };
830 /**
831  * hid_validate_values - validate existing device report's value indexes
832  *
833  * @device: hid device
834  * @type: which report type to examine
835  * @id: which report ID to examine (0 for first)
836  * @field_index: which report field to examine
837  * @report_counts: expected number of values
838  *
839  * Validate the number of values in a given field of a given report, after
840  * parsing.
841  */
842 struct hid_report *hid_validate_values(struct hid_device *hid,
843                                        unsigned int type, unsigned int id,
844                                        unsigned int field_index,
845                                        unsigned int report_counts)
846 {
847         struct hid_report *report;
848 
849         if (type > HID_FEATURE_REPORT) {
850                 hid_err(hid, "invalid HID report type %u\n", type);
851                 return NULL;
852         }
853 
854         if (id >= HID_MAX_IDS) {
855                 hid_err(hid, "invalid HID report id %u\n", id);
856                 return NULL;
857         }
858 
859         /*
860          * Explicitly not using hid_get_report() here since it depends on
861          * ->numbered being checked, which may not always be the case when
862          * drivers go to access report values.
863          */
864         if (id == 0) {
865                 /*
866                  * Validating on id 0 means we should examine the first
867                  * report in the list.
868                  */
869                 report = list_entry(
870                                 hid->report_enum[type].report_list.next,
871                                 struct hid_report, list);
872         } else {
873                 report = hid->report_enum[type].report_id_hash[id];
874         }
875         if (!report) {
876                 hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
877                 return NULL;
878         }
879         if (report->maxfield <= field_index) {
880                 hid_err(hid, "not enough fields in %s %u\n",
881                         hid_report_names[type], id);
882                 return NULL;
883         }
884         if (report->field[field_index]->report_count < report_counts) {
885                 hid_err(hid, "not enough values in %s %u field %u\n",
886                         hid_report_names[type], id, field_index);
887                 return NULL;
888         }
889         return report;
890 }
891 EXPORT_SYMBOL_GPL(hid_validate_values);
892 
893 /**
894  * hid_open_report - open a driver-specific device report
895  *
896  * @device: hid device
897  *
898  * Parse a report description into a hid_device structure. Reports are
899  * enumerated, fields are attached to these reports.
900  * 0 returned on success, otherwise nonzero error value.
901  *
902  * This function (or the equivalent hid_parse() macro) should only be
903  * called from probe() in drivers, before starting the device.
904  */
905 int hid_open_report(struct hid_device *device)
906 {
907         struct hid_parser *parser;
908         struct hid_item item;
909         unsigned int size;
910         __u8 *start;
911         __u8 *buf;
912         __u8 *end;
913         int ret;
914         static int (*dispatch_type[])(struct hid_parser *parser,
915                                       struct hid_item *item) = {
916                 hid_parser_main,
917                 hid_parser_global,
918                 hid_parser_local,
919                 hid_parser_reserved
920         };
921 
922         if (WARN_ON(device->status & HID_STAT_PARSED))
923                 return -EBUSY;
924 
925         start = device->dev_rdesc;
926         if (WARN_ON(!start))
927                 return -ENODEV;
928         size = device->dev_rsize;
929 
930         buf = kmemdup(start, size, GFP_KERNEL);
931         if (buf == NULL)
932                 return -ENOMEM;
933 
934         if (device->driver->report_fixup)
935                 start = device->driver->report_fixup(device, buf, &size);
936         else
937                 start = buf;
938 
939         start = kmemdup(start, size, GFP_KERNEL);
940         kfree(buf);
941         if (start == NULL)
942                 return -ENOMEM;
943 
944         device->rdesc = start;
945         device->rsize = size;
946 
947         parser = vzalloc(sizeof(struct hid_parser));
948         if (!parser) {
949                 ret = -ENOMEM;
950                 goto err;
951         }
952 
953         parser->device = device;
954 
955         end = start + size;
956 
957         device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
958                                      sizeof(struct hid_collection), GFP_KERNEL);
959         if (!device->collection) {
960                 ret = -ENOMEM;
961                 goto err;
962         }
963         device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
964 
965         ret = -EINVAL;
966         while ((start = fetch_item(start, end, &item)) != NULL) {
967 
968                 if (item.format != HID_ITEM_FORMAT_SHORT) {
969                         hid_err(device, "unexpected long global item\n");
970                         goto err;
971                 }
972 
973                 if (dispatch_type[item.type](parser, &item)) {
974                         hid_err(device, "item %u %u %u %u parsing failed\n",
975                                 item.format, (unsigned)item.size,
976                                 (unsigned)item.type, (unsigned)item.tag);
977                         goto err;
978                 }
979 
980                 if (start == end) {
981                         if (parser->collection_stack_ptr) {
982                                 hid_err(device, "unbalanced collection at end of report description\n");
983                                 goto err;
984                         }
985                         if (parser->local.delimiter_depth) {
986                                 hid_err(device, "unbalanced delimiter at end of report description\n");
987                                 goto err;
988                         }
989                         vfree(parser);
990                         device->status |= HID_STAT_PARSED;
991                         return 0;
992                 }
993         }
994 
995         hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
996 err:
997         vfree(parser);
998         hid_close_report(device);
999         return ret;
1000 }
1001 EXPORT_SYMBOL_GPL(hid_open_report);
1002 
1003 /*
1004  * Convert a signed n-bit integer to signed 32-bit integer. Common
1005  * cases are done through the compiler, the screwed things has to be
1006  * done by hand.
1007  */
1008 
1009 static s32 snto32(__u32 value, unsigned n)
1010 {
1011         switch (n) {
1012         case 8:  return ((__s8)value);
1013         case 16: return ((__s16)value);
1014         case 32: return ((__s32)value);
1015         }
1016         return value & (1 << (n - 1)) ? value | (-1 << n) : value;
1017 }
1018 
1019 s32 hid_snto32(__u32 value, unsigned n)
1020 {
1021         return snto32(value, n);
1022 }
1023 EXPORT_SYMBOL_GPL(hid_snto32);
1024 
1025 /*
1026  * Convert a signed 32-bit integer to a signed n-bit integer.
1027  */
1028 
1029 static u32 s32ton(__s32 value, unsigned n)
1030 {
1031         s32 a = value >> (n - 1);
1032         if (a && a != -1)
1033                 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1034         return value & ((1 << n) - 1);
1035 }
1036 
1037 /*
1038  * Extract/implement a data field from/to a little endian report (bit array).
1039  *
1040  * Code sort-of follows HID spec:
1041  *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
1042  *
1043  * While the USB HID spec allows unlimited length bit fields in "report
1044  * descriptors", most devices never use more than 16 bits.
1045  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1046  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1047  */
1048 
1049 static __u32 extract(const struct hid_device *hid, __u8 *report,
1050                      unsigned offset, unsigned n)
1051 {
1052         u64 x;
1053 
1054         if (n > 32)
1055                 hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
1056                          n, current->comm);
1057 
1058         report += offset >> 3;  /* adjust byte index */
1059         offset &= 7;            /* now only need bit offset into one byte */
1060         x = get_unaligned_le64(report);
1061         x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
1062         return (u32) x;
1063 }
1064 
1065 /*
1066  * "implement" : set bits in a little endian bit stream.
1067  * Same concepts as "extract" (see comments above).
1068  * The data mangled in the bit stream remains in little endian
1069  * order the whole time. It make more sense to talk about
1070  * endianness of register values by considering a register
1071  * a "cached" copy of the little endiad bit stream.
1072  */
1073 static void implement(const struct hid_device *hid, __u8 *report,
1074                       unsigned offset, unsigned n, __u32 value)
1075 {
1076         u64 x;
1077         u64 m = (1ULL << n) - 1;
1078 
1079         if (n > 32)
1080                 hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1081                          __func__, n, current->comm);
1082 
1083         if (value > m)
1084                 hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1085                          __func__, value, current->comm);
1086         WARN_ON(value > m);
1087         value &= m;
1088 
1089         report += offset >> 3;
1090         offset &= 7;
1091 
1092         x = get_unaligned_le64(report);
1093         x &= ~(m << offset);
1094         x |= ((u64)value) << offset;
1095         put_unaligned_le64(x, report);
1096 }
1097 
1098 /*
1099  * Search an array for a value.
1100  */
1101 
1102 static int search(__s32 *array, __s32 value, unsigned n)
1103 {
1104         while (n--) {
1105                 if (*array++ == value)
1106                         return 0;
1107         }
1108         return -1;
1109 }
1110 
1111 /**
1112  * hid_match_report - check if driver's raw_event should be called
1113  *
1114  * @hid: hid device
1115  * @report_type: type to match against
1116  *
1117  * compare hid->driver->report_table->report_type to report->type
1118  */
1119 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1120 {
1121         const struct hid_report_id *id = hid->driver->report_table;
1122 
1123         if (!id) /* NULL means all */
1124                 return 1;
1125 
1126         for (; id->report_type != HID_TERMINATOR; id++)
1127                 if (id->report_type == HID_ANY_ID ||
1128                                 id->report_type == report->type)
1129                         return 1;
1130         return 0;
1131 }
1132 
1133 /**
1134  * hid_match_usage - check if driver's event should be called
1135  *
1136  * @hid: hid device
1137  * @usage: usage to match against
1138  *
1139  * compare hid->driver->usage_table->usage_{type,code} to
1140  * usage->usage_{type,code}
1141  */
1142 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1143 {
1144         const struct hid_usage_id *id = hid->driver->usage_table;
1145 
1146         if (!id) /* NULL means all */
1147                 return 1;
1148 
1149         for (; id->usage_type != HID_ANY_ID - 1; id++)
1150                 if ((id->usage_hid == HID_ANY_ID ||
1151                                 id->usage_hid == usage->hid) &&
1152                                 (id->usage_type == HID_ANY_ID ||
1153                                 id->usage_type == usage->type) &&
1154                                 (id->usage_code == HID_ANY_ID ||
1155                                  id->usage_code == usage->code))
1156                         return 1;
1157         return 0;
1158 }
1159 
1160 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1161                 struct hid_usage *usage, __s32 value, int interrupt)
1162 {
1163         struct hid_driver *hdrv = hid->driver;
1164         int ret;
1165 
1166         if (!list_empty(&hid->debug_list))
1167                 hid_dump_input(hid, usage, value);
1168 
1169         if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1170                 ret = hdrv->event(hid, field, usage, value);
1171                 if (ret != 0) {
1172                         if (ret < 0)
1173                                 hid_err(hid, "%s's event failed with %d\n",
1174                                                 hdrv->name, ret);
1175                         return;
1176                 }
1177         }
1178 
1179         if (hid->claimed & HID_CLAIMED_INPUT)
1180                 hidinput_hid_event(hid, field, usage, value);
1181         if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1182                 hid->hiddev_hid_event(hid, field, usage, value);
1183 }
1184 
1185 /*
1186  * Analyse a received field, and fetch the data from it. The field
1187  * content is stored for next report processing (we do differential
1188  * reporting to the layer).
1189  */
1190 
1191 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1192                             __u8 *data, int interrupt)
1193 {
1194         unsigned n;
1195         unsigned count = field->report_count;
1196         unsigned offset = field->report_offset;
1197         unsigned size = field->report_size;
1198         __s32 min = field->logical_minimum;
1199         __s32 max = field->logical_maximum;
1200         __s32 *value;
1201 
1202         value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1203         if (!value)
1204                 return;
1205 
1206         for (n = 0; n < count; n++) {
1207 
1208                 value[n] = min < 0 ?
1209                         snto32(extract(hid, data, offset + n * size, size),
1210                                size) :
1211                         extract(hid, data, offset + n * size, size);
1212 
1213                 /* Ignore report if ErrorRollOver */
1214                 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1215                     value[n] >= min && value[n] <= max &&
1216                     field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1217                         goto exit;
1218         }
1219 
1220         for (n = 0; n < count; n++) {
1221 
1222                 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1223                         hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1224                         continue;
1225                 }
1226 
1227                 if (field->value[n] >= min && field->value[n] <= max
1228                         && field->usage[field->value[n] - min].hid
1229                         && search(value, field->value[n], count))
1230                                 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1231 
1232                 if (value[n] >= min && value[n] <= max
1233                         && field->usage[value[n] - min].hid
1234                         && search(field->value, value[n], count))
1235                                 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1236         }
1237 
1238         memcpy(field->value, value, count * sizeof(__s32));
1239 exit:
1240         kfree(value);
1241 }
1242 
1243 /*
1244  * Output the field into the report.
1245  */
1246 
1247 static void hid_output_field(const struct hid_device *hid,
1248                              struct hid_field *field, __u8 *data)
1249 {
1250         unsigned count = field->report_count;
1251         unsigned offset = field->report_offset;
1252         unsigned size = field->report_size;
1253         unsigned n;
1254 
1255         for (n = 0; n < count; n++) {
1256                 if (field->logical_minimum < 0) /* signed values */
1257                         implement(hid, data, offset + n * size, size,
1258                                   s32ton(field->value[n], size));
1259                 else                            /* unsigned values */
1260                         implement(hid, data, offset + n * size, size,
1261                                   field->value[n]);
1262         }
1263 }
1264 
1265 /*
1266  * Create a report. 'data' has to be allocated using
1267  * hid_alloc_report_buf() so that it has proper size.
1268  */
1269 
1270 void hid_output_report(struct hid_report *report, __u8 *data)
1271 {
1272         unsigned n;
1273 
1274         if (report->id > 0)
1275                 *data++ = report->id;
1276 
1277         memset(data, 0, ((report->size - 1) >> 3) + 1);
1278         for (n = 0; n < report->maxfield; n++)
1279                 hid_output_field(report->device, report->field[n], data);
1280 }
1281 EXPORT_SYMBOL_GPL(hid_output_report);
1282 
1283 static int hid_report_len(struct hid_report *report)
1284 {
1285         /* equivalent to DIV_ROUND_UP(report->size, 8) + !!(report->id > 0) */
1286         return ((report->size - 1) >> 3) + 1 + (report->id > 0);
1287 }
1288 
1289 /*
1290  * Allocator for buffer that is going to be passed to hid_output_report()
1291  */
1292 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1293 {
1294         /*
1295          * 7 extra bytes are necessary to achieve proper functionality
1296          * of implement() working on 8 byte chunks
1297          */
1298 
1299         int len = hid_report_len(report) + 7;
1300 
1301         return kmalloc(len, flags);
1302 }
1303 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1304 
1305 /*
1306  * Set a field value. The report this field belongs to has to be
1307  * created and transferred to the device, to set this value in the
1308  * device.
1309  */
1310 
1311 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1312 {
1313         unsigned size;
1314 
1315         if (!field)
1316                 return -1;
1317 
1318         size = field->report_size;
1319 
1320         hid_dump_input(field->report->device, field->usage + offset, value);
1321 
1322         if (offset >= field->report_count) {
1323                 hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1324                                 offset, field->report_count);
1325                 return -1;
1326         }
1327         if (field->logical_minimum < 0) {
1328                 if (value != snto32(s32ton(value, size), size)) {
1329                         hid_err(field->report->device, "value %d is out of range\n", value);
1330                         return -1;
1331                 }
1332         }
1333         field->value[offset] = value;
1334         return 0;
1335 }
1336 EXPORT_SYMBOL_GPL(hid_set_field);
1337 
1338 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1339                 const u8 *data)
1340 {
1341         struct hid_report *report;
1342         unsigned int n = 0;     /* Normally report number is 0 */
1343 
1344         /* Device uses numbered reports, data[0] is report number */
1345         if (report_enum->numbered)
1346                 n = *data;
1347 
1348         report = report_enum->report_id_hash[n];
1349         if (report == NULL)
1350                 dbg_hid("undefined report_id %u received\n", n);
1351 
1352         return report;
1353 }
1354 
1355 /*
1356  * Implement a generic .request() callback, using .raw_request()
1357  * DO NOT USE in hid drivers directly, but through hid_hw_request instead.
1358  */
1359 void __hid_request(struct hid_device *hid, struct hid_report *report,
1360                 int reqtype)
1361 {
1362         char *buf;
1363         int ret;
1364         int len;
1365 
1366         buf = hid_alloc_report_buf(report, GFP_KERNEL);
1367         if (!buf)
1368                 return;
1369 
1370         len = hid_report_len(report);
1371 
1372         if (reqtype == HID_REQ_SET_REPORT)
1373                 hid_output_report(report, buf);
1374 
1375         ret = hid->ll_driver->raw_request(hid, report->id, buf, len,
1376                                           report->type, reqtype);
1377         if (ret < 0) {
1378                 dbg_hid("unable to complete request: %d\n", ret);
1379                 goto out;
1380         }
1381 
1382         if (reqtype == HID_REQ_GET_REPORT)
1383                 hid_input_report(hid, report->type, buf, ret, 0);
1384 
1385 out:
1386         kfree(buf);
1387 }
1388 EXPORT_SYMBOL_GPL(__hid_request);
1389 
1390 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1391                 int interrupt)
1392 {
1393         struct hid_report_enum *report_enum = hid->report_enum + type;
1394         struct hid_report *report;
1395         struct hid_driver *hdrv;
1396         unsigned int a;
1397         int rsize, csize = size;
1398         u8 *cdata = data;
1399         int ret = 0;
1400 
1401         report = hid_get_report(report_enum, data);
1402         if (!report)
1403                 goto out;
1404 
1405         if (report_enum->numbered) {
1406                 cdata++;
1407                 csize--;
1408         }
1409 
1410         rsize = ((report->size - 1) >> 3) + 1;
1411 
1412         if (rsize > HID_MAX_BUFFER_SIZE)
1413                 rsize = HID_MAX_BUFFER_SIZE;
1414 
1415         if (csize < rsize) {
1416                 dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1417                                 csize, rsize);
1418                 memset(cdata + csize, 0, rsize - csize);
1419         }
1420 
1421         if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1422                 hid->hiddev_report_event(hid, report);
1423         if (hid->claimed & HID_CLAIMED_HIDRAW) {
1424                 ret = hidraw_report_event(hid, data, size);
1425                 if (ret)
1426                         goto out;
1427         }
1428 
1429         if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1430                 for (a = 0; a < report->maxfield; a++)
1431                         hid_input_field(hid, report->field[a], cdata, interrupt);
1432                 hdrv = hid->driver;
1433                 if (hdrv && hdrv->report)
1434                         hdrv->report(hid, report);
1435         }
1436 
1437         if (hid->claimed & HID_CLAIMED_INPUT)
1438                 hidinput_report_event(hid, report);
1439 out:
1440         return ret;
1441 }
1442 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1443 
1444 /**
1445  * hid_input_report - report data from lower layer (usb, bt...)
1446  *
1447  * @hid: hid device
1448  * @type: HID report type (HID_*_REPORT)
1449  * @data: report contents
1450  * @size: size of data parameter
1451  * @interrupt: distinguish between interrupt and control transfers
1452  *
1453  * This is data entry for lower layers.
1454  */
1455 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1456 {
1457         struct hid_report_enum *report_enum;
1458         struct hid_driver *hdrv;
1459         struct hid_report *report;
1460         int ret = 0;
1461 
1462         if (!hid)
1463                 return -ENODEV;
1464 
1465         if (down_trylock(&hid->driver_input_lock))
1466                 return -EBUSY;
1467 
1468         if (!hid->driver) {
1469                 ret = -ENODEV;
1470                 goto unlock;
1471         }
1472         report_enum = hid->report_enum + type;
1473         hdrv = hid->driver;
1474 
1475         if (!size) {
1476                 dbg_hid("empty report\n");
1477                 ret = -1;
1478                 goto unlock;
1479         }
1480 
1481         /* Avoid unnecessary overhead if debugfs is disabled */
1482         if (!list_empty(&hid->debug_list))
1483                 hid_dump_report(hid, type, data, size);
1484 
1485         report = hid_get_report(report_enum, data);
1486 
1487         if (!report) {
1488                 ret = -1;
1489                 goto unlock;
1490         }
1491 
1492         if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1493                 ret = hdrv->raw_event(hid, report, data, size);
1494                 if (ret < 0)
1495                         goto unlock;
1496         }
1497 
1498         ret = hid_report_raw_event(hid, type, data, size, interrupt);
1499 
1500 unlock:
1501         up(&hid->driver_input_lock);
1502         return ret;
1503 }
1504 EXPORT_SYMBOL_GPL(hid_input_report);
1505 
1506 static bool hid_match_one_id(struct hid_device *hdev,
1507                 const struct hid_device_id *id)
1508 {
1509         return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1510                 (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1511                 (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1512                 (id->product == HID_ANY_ID || id->product == hdev->product);
1513 }
1514 
1515 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1516                 const struct hid_device_id *id)
1517 {
1518         for (; id->bus; id++)
1519                 if (hid_match_one_id(hdev, id))
1520                         return id;
1521 
1522         return NULL;
1523 }
1524 
1525 static const struct hid_device_id hid_hiddev_list[] = {
1526         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1527         { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1528         { }
1529 };
1530 
1531 static bool hid_hiddev(struct hid_device *hdev)
1532 {
1533         return !!hid_match_id(hdev, hid_hiddev_list);
1534 }
1535 
1536 
1537 static ssize_t
1538 read_report_descriptor(struct file *filp, struct kobject *kobj,
1539                 struct bin_attribute *attr,
1540                 char *buf, loff_t off, size_t count)
1541 {
1542         struct device *dev = container_of(kobj, struct device, kobj);
1543         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1544 
1545         if (off >= hdev->rsize)
1546                 return 0;
1547 
1548         if (off + count > hdev->rsize)
1549                 count = hdev->rsize - off;
1550 
1551         memcpy(buf, hdev->rdesc + off, count);
1552 
1553         return count;
1554 }
1555 
1556 static struct bin_attribute dev_bin_attr_report_desc = {
1557         .attr = { .name = "report_descriptor", .mode = 0444 },
1558         .read = read_report_descriptor,
1559         .size = HID_MAX_DESCRIPTOR_SIZE,
1560 };
1561 
1562 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1563 {
1564         static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1565                 "Joystick", "Gamepad", "Keyboard", "Keypad",
1566                 "Multi-Axis Controller"
1567         };
1568         const char *type, *bus;
1569         char buf[64];
1570         unsigned int i;
1571         int len;
1572         int ret;
1573 
1574         if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1575                 connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1576         if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1577                 connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1578         if (hdev->bus != BUS_USB)
1579                 connect_mask &= ~HID_CONNECT_HIDDEV;
1580         if (hid_hiddev(hdev))
1581                 connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1582 
1583         if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1584                                 connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1585                 hdev->claimed |= HID_CLAIMED_INPUT;
1586 
1587         if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1588                         !hdev->hiddev_connect(hdev,
1589                                 connect_mask & HID_CONNECT_HIDDEV_FORCE))
1590                 hdev->claimed |= HID_CLAIMED_HIDDEV;
1591         if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1592                 hdev->claimed |= HID_CLAIMED_HIDRAW;
1593 
1594         /* Drivers with the ->raw_event callback set are not required to connect
1595          * to any other listener. */
1596         if (!hdev->claimed && !hdev->driver->raw_event) {
1597                 hid_err(hdev, "device has no listeners, quitting\n");
1598                 return -ENODEV;
1599         }
1600 
1601         if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1602                         (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1603                 hdev->ff_init(hdev);
1604 
1605         len = 0;
1606         if (hdev->claimed & HID_CLAIMED_INPUT)
1607                 len += sprintf(buf + len, "input");
1608         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1609                 len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1610                                 hdev->minor);
1611         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1612                 len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1613                                 ((struct hidraw *)hdev->hidraw)->minor);
1614 
1615         type = "Device";
1616         for (i = 0; i < hdev->maxcollection; i++) {
1617                 struct hid_collection *col = &hdev->collection[i];
1618                 if (col->type == HID_COLLECTION_APPLICATION &&
1619                    (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1620                    (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1621                         type = types[col->usage & 0xffff];
1622                         break;
1623                 }
1624         }
1625 
1626         switch (hdev->bus) {
1627         case BUS_USB:
1628                 bus = "USB";
1629                 break;
1630         case BUS_BLUETOOTH:
1631                 bus = "BLUETOOTH";
1632                 break;
1633         default:
1634                 bus = "<UNKNOWN>";
1635         }
1636 
1637         ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1638         if (ret)
1639                 hid_warn(hdev,
1640                          "can't create sysfs report descriptor attribute err: %d\n", ret);
1641 
1642         hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1643                  buf, bus, hdev->version >> 8, hdev->version & 0xff,
1644                  type, hdev->name, hdev->phys);
1645 
1646         return 0;
1647 }
1648 EXPORT_SYMBOL_GPL(hid_connect);
1649 
1650 void hid_disconnect(struct hid_device *hdev)
1651 {
1652         device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1653         if (hdev->claimed & HID_CLAIMED_INPUT)
1654                 hidinput_disconnect(hdev);
1655         if (hdev->claimed & HID_CLAIMED_HIDDEV)
1656                 hdev->hiddev_disconnect(hdev);
1657         if (hdev->claimed & HID_CLAIMED_HIDRAW)
1658                 hidraw_disconnect(hdev);
1659 }
1660 EXPORT_SYMBOL_GPL(hid_disconnect);
1661 
1662 /*
1663  * A list of devices for which there is a specialized driver on HID bus.
1664  *
1665  * Please note that for multitouch devices (driven by hid-multitouch driver),
1666  * there is a proper autodetection and autoloading in place (based on presence
1667  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1668  * as we are doing the right thing in hid_scan_usage().
1669  *
1670  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1671  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1672  * used as a driver. See hid_scan_report().
1673  */
1674 static const struct hid_device_id hid_have_special_driver[] = {
1675         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1676         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1677         { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1678         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1679         { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
1680         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1681         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1682         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1683         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1684         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1685         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1686         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1687         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1688         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1689         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1690         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1691         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1692         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1693         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1694         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1695         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1696         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1697         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1698         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1699         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1700         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1701         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1702         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1703         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1704         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1705         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1706         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1707         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1708         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1709         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1710         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1711         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1712         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1713         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1714         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1715         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1716         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1717         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1718         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1719         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1720         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1721         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1722         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1723         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1724         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1725         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1726         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1727         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1728         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1729         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1730         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1731         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1732         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1733         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1734         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1735         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1736         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1737         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1738         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1739         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1740         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1741         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1742         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1743         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1744         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1745         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1746         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1747         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1748         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1749         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1750         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1751         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1752         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1753         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1754         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1755         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS) },
1756         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1757         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1758         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1759         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1760         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1761         { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1762         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1763         { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1764         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1765         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1766         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1767         { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1768         { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1769         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) },
1770         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1771         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1772         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1773         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1774         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1775         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1776         { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1777         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1778         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1779         { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1780         { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1781         { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1782         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1783         { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1784         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1785         { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1786         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1787         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1788         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1789         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1790         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1791         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1792         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1793         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
1794         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
1795         { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
1796         { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_TABLET) },
1797         { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1798         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1799         { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1800         { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1801         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1802         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_MANTICORE) },
1803         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1804         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1805         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1806         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1807         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1808         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1809         { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1810 #if IS_ENABLED(CONFIG_HID_LENOVO)
1811         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1812         { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) },
1813         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) },
1814 #endif
1815         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1816         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1817         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1818         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1819         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1820         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1821         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1822         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1823         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1824         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1825         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1826         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1827         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1828         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1829         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1830         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1831         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1832         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1833         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1834         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1835         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1836         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
1837         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1838         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1839         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1840         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1841 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1842         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1843         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1844 #endif
1845         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1846         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1847         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1848         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1849         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1850         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1851         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1852         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1853         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1854         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1855         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1856         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1857         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1858         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1859         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
1860         { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1861         { HID_USB_DEVICE(USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL) },
1862         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1863         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1864         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1865         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1866         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1867         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1868         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1869         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1870         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1871         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1872         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1873         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1874         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1875         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1876         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1877         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1878         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1879         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1880         { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1881         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1882         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1883         { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1884         { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1885 #if IS_ENABLED(CONFIG_HID_ROCCAT)
1886         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1887         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1888         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
1889         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1890         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1891         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1892         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1893         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
1894         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1895         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1896         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1897         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1898         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
1899         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
1900         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
1901         { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1902 #endif
1903 #if IS_ENABLED(CONFIG_HID_SAITEK)
1904         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1905         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7) },
1906         { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_MMO7) },
1907 #endif
1908         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1909         { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1910         { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1911         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1912         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1913         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1914         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1915         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1916         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1917         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1918         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
1919         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1920         { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1921         { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1922         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1923         { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1924         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1925         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1926         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1927         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1928         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1929         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1930         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1931         { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1932         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1933         { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1934         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1935         { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1936         { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1937         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1938         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1939         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1940         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1941         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1942         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1943         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1944         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1945         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1946         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1947         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1948         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1949         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1950         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1951         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1952         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1953         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1954         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1955         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1956         { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1957         { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1958         { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1959         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1960         { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1961         { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1962 
1963         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1964         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1965         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1966         { }
1967 };
1968 
1969 struct hid_dynid {
1970         struct list_head list;
1971         struct hid_device_id id;
1972 };
1973 
1974 /**
1975  * store_new_id - add a new HID device ID to this driver and re-probe devices
1976  * @driver: target device driver
1977  * @buf: buffer for scanning device ID data
1978  * @count: input size
1979  *
1980  * Adds a new dynamic hid device ID to this driver,
1981  * and causes the driver to probe for all devices again.
1982  */
1983 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1984                 size_t count)
1985 {
1986         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1987         struct hid_dynid *dynid;
1988         __u32 bus, vendor, product;
1989         unsigned long driver_data = 0;
1990         int ret;
1991 
1992         ret = sscanf(buf, "%x %x %x %lx",
1993                         &bus, &vendor, &product, &driver_data);
1994         if (ret < 3)
1995                 return -EINVAL;
1996 
1997         dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1998         if (!dynid)
1999                 return -ENOMEM;
2000 
2001         dynid->id.bus = bus;
2002         dynid->id.group = HID_GROUP_ANY;
2003         dynid->id.vendor = vendor;
2004         dynid->id.product = product;
2005         dynid->id.driver_data = driver_data;
2006 
2007         spin_lock(&hdrv->dyn_lock);
2008         list_add_tail(&dynid->list, &hdrv->dyn_list);
2009         spin_unlock(&hdrv->dyn_lock);
2010 
2011         ret = driver_attach(&hdrv->driver);
2012 
2013         return ret ? : count;
2014 }
2015 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
2016 
2017 static void hid_free_dynids(struct hid_driver *hdrv)
2018 {
2019         struct hid_dynid *dynid, *n;
2020 
2021         spin_lock(&hdrv->dyn_lock);
2022         list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
2023                 list_del(&dynid->list);
2024                 kfree(dynid);
2025         }
2026         spin_unlock(&hdrv->dyn_lock);
2027 }
2028 
2029 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
2030                 struct hid_driver *hdrv)
2031 {
2032         struct hid_dynid *dynid;
2033 
2034         spin_lock(&hdrv->dyn_lock);
2035         list_for_each_entry(dynid, &hdrv->dyn_list, list) {
2036                 if (hid_match_one_id(hdev, &dynid->id)) {
2037                         spin_unlock(&hdrv->dyn_lock);
2038                         return &dynid->id;
2039                 }
2040         }
2041         spin_unlock(&hdrv->dyn_lock);
2042 
2043         return hid_match_id(hdev, hdrv->id_table);
2044 }
2045 
2046 static int hid_bus_match(struct device *dev, struct device_driver *drv)
2047 {
2048         struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
2049         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2050 
2051         return hid_match_device(hdev, hdrv) != NULL;
2052 }
2053 
2054 static int hid_device_probe(struct device *dev)
2055 {
2056         struct hid_driver *hdrv = container_of(dev->driver,
2057                         struct hid_driver, driver);
2058         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2059         const struct hid_device_id *id;
2060         int ret = 0;
2061 
2062         if (down_interruptible(&hdev->driver_lock))
2063                 return -EINTR;
2064         if (down_interruptible(&hdev->driver_input_lock)) {
2065                 ret = -EINTR;
2066                 goto unlock_driver_lock;
2067         }
2068         hdev->io_started = false;
2069 
2070         if (!hdev->driver) {
2071                 id = hid_match_device(hdev, hdrv);
2072                 if (id == NULL) {
2073                         ret = -ENODEV;
2074                         goto unlock;
2075                 }
2076 
2077                 hdev->driver = hdrv;
2078                 if (hdrv->probe) {
2079                         ret = hdrv->probe(hdev, id);
2080                 } else { /* default probe */
2081                         ret = hid_open_report(hdev);
2082                         if (!ret)
2083                                 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2084                 }
2085                 if (ret) {
2086                         hid_close_report(hdev);
2087                         hdev->driver = NULL;
2088                 }
2089         }
2090 unlock:
2091         if (!hdev->io_started)
2092                 up(&hdev->driver_input_lock);
2093 unlock_driver_lock:
2094         up(&hdev->driver_lock);
2095         return ret;
2096 }
2097 
2098 static int hid_device_remove(struct device *dev)
2099 {
2100         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2101         struct hid_driver *hdrv;
2102         int ret = 0;
2103 
2104         if (down_interruptible(&hdev->driver_lock))
2105                 return -EINTR;
2106         if (down_interruptible(&hdev->driver_input_lock)) {
2107                 ret = -EINTR;
2108                 goto unlock_driver_lock;
2109         }
2110         hdev->io_started = false;
2111 
2112         hdrv = hdev->driver;
2113         if (hdrv) {
2114                 if (hdrv->remove)
2115                         hdrv->remove(hdev);
2116                 else /* default remove */
2117                         hid_hw_stop(hdev);
2118                 hid_close_report(hdev);
2119                 hdev->driver = NULL;
2120         }
2121 
2122         if (!hdev->io_started)
2123                 up(&hdev->driver_input_lock);
2124 unlock_driver_lock:
2125         up(&hdev->driver_lock);
2126         return ret;
2127 }
2128 
2129 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2130                              char *buf)
2131 {
2132         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2133         int len;
2134 
2135         len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2136                        hdev->bus, hdev->group, hdev->vendor, hdev->product);
2137 
2138         return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2139 }
2140 static DEVICE_ATTR_RO(modalias);
2141 
2142 static struct attribute *hid_dev_attrs[] = {
2143         &dev_attr_modalias.attr,
2144         NULL,
2145 };
2146 ATTRIBUTE_GROUPS(hid_dev);
2147 
2148 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2149 {
2150         struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2151 
2152         if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2153                         hdev->bus, hdev->vendor, hdev->product))
2154                 return -ENOMEM;
2155 
2156         if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2157                 return -ENOMEM;
2158 
2159         if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2160                 return -ENOMEM;
2161 
2162         if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2163                 return -ENOMEM;
2164 
2165         if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2166                            hdev->bus, hdev->group, hdev->vendor, hdev->product))
2167                 return -ENOMEM;
2168 
2169         return 0;
2170 }
2171 
2172 static struct bus_type hid_bus_type = {
2173         .name           = "hid",
2174         .dev_groups     = hid_dev_groups,
2175         .match          = hid_bus_match,
2176         .probe          = hid_device_probe,
2177         .remove         = hid_device_remove,
2178         .uevent         = hid_uevent,
2179 };
2180 
2181 /* a list of devices that shouldn't be handled by HID core at all */
2182 static const struct hid_device_id hid_ignore_list[] = {
2183         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2184         { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2185         { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2186         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2187         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2188         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2189         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2190         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2191         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2192         { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2193         { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2194         { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2195         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2196         { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2197         { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2198         { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2199         { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2200         { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2201         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2202         { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
2203         { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2204         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2205         { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2206         { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2207         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2208         { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2209         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2210         { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2211         { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2212         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2213         { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2214         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2215         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2216         { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2217         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2218         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2219         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2220         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2221         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2222         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2223         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2224         { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2225         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2226         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2227         { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2228         { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2229         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2230         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2231         { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2232         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2233         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2234         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2235         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2236         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2237         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2238         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2239         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2240         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2241         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2242         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2243         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2244         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2245         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2246         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2247         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2248         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2249         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2250         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2251         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2252         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2253         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2254         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2255         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2256         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2257         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2258         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2259         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2260         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2261         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2262         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2263         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2264         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2265         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2266         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2267         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2268         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2269         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2270         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2271         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2272         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2273         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2274         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2275         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2276         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2277         { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2278         { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2279         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2280         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2281         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_GN9350E) },
2282         { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2283         { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2284         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2285         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2286         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2287         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2288         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2289         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2290         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2291         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2292         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2293         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2294         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2295         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2296         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2297         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2298         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2299         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2300         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2301         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2302         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2303         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2304         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2305         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2306         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2307         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2308         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2309         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2310         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2311         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2312         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2313         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2314         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2315         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2316         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2317         { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2318         { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2319         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2320         { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2321         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2322         { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2323         { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2324         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2325         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2326         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2327         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2328         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2329         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2330         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2331         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2332         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2333         { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2334         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2335         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2336         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2337         { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2338         { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2339         { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2340 #if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2341         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2342         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2343         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2344         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2345         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2346         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2347         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2348         { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2349 #endif
2350         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2351         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2352         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2353         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2354         { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2355         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2356         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2357         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2358         { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2359         { HID_USB_DEVICE(USB_VENDOR_ID_RISO_KAGAKU, USB_DEVICE_ID_RI_KA_WEBMAIL) },
2360         { }
2361 };
2362 
2363 /**
2364  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2365  *
2366  * There are composite devices for which we want to ignore only a certain
2367  * interface. This is a list of devices for which only the mouse interface will
2368  * be ignored. This allows a dedicated driver to take care of the interface.
2369  */
2370 static const struct hid_device_id hid_mouse_ignore_list[] = {
2371         /* appletouch driver */
2372         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2373         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2374         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2375         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2376         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2377         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2378         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2379         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2380         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2381         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2382         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2383         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2384         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2385         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2386         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2387         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2388         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2389         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2390         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2391         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2392         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2393         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2394         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2395         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2396         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2397         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2398         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2399         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2400         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2401         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2402         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2403         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2404         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2405         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2406         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2407         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2408         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2409         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2410         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2411         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2412         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2413         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2414         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2415         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2416         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2417         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2418         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2419         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2420         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2421         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2422         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2423         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2424         { }
2425 };
2426 
2427 bool hid_ignore(struct hid_device *hdev)
2428 {
2429         if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2430                 return false;
2431         if (hdev->quirks & HID_QUIRK_IGNORE)
2432                 return true;
2433 
2434         switch (hdev->vendor) {
2435         case USB_VENDOR_ID_CODEMERCS:
2436                 /* ignore all Code Mercenaries IOWarrior devices */
2437                 if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2438                                 hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2439                         return true;
2440                 break;
2441         case USB_VENDOR_ID_LOGITECH:
2442                 if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2443                                 hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2444                         return true;
2445                 /*
2446                  * The Keene FM transmitter USB device has the same USB ID as
2447                  * the Logitech AudioHub Speaker, but it should ignore the hid.
2448                  * Check if the name is that of the Keene device.
2449                  * For reference: the name of the AudioHub is
2450                  * "HOLTEK  AudioHub Speaker".
2451                  */
2452                 if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2453                         !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2454                                 return true;
2455                 break;
2456         case USB_VENDOR_ID_SOUNDGRAPH:
2457                 if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2458                     hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2459                         return true;
2460                 break;
2461         case USB_VENDOR_ID_HANWANG:
2462                 if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2463                     hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2464                         return true;
2465                 break;
2466         case USB_VENDOR_ID_JESS:
2467                 if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2468                                 hdev->type == HID_TYPE_USBNONE)
2469                         return true;
2470                 break;
2471         case USB_VENDOR_ID_VELLEMAN:
2472                 /* These are not HID devices.  They are handled by comedi. */
2473                 if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2474                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2475                     (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2476                      hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2477                         return true;
2478                 break;
2479         case USB_VENDOR_ID_ATMEL_V_USB:
2480                 /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2481                  * it has the same USB ID as many Atmel V-USB devices. This
2482                  * usb radio is handled by radio-ma901.c driver so we want
2483                  * ignore the hid. Check the name, bus, product and ignore
2484                  * if we have MA901 usb radio.
2485                  */
2486                 if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2487                         hdev->bus == BUS_USB &&
2488                         strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2489                         return true;
2490                 break;
2491         }
2492 
2493         if (hdev->type == HID_TYPE_USBMOUSE &&
2494                         hid_match_id(hdev, hid_mouse_ignore_list))
2495                 return true;
2496 
2497         return !!hid_match_id(hdev, hid_ignore_list);
2498 }
2499 EXPORT_SYMBOL_GPL(hid_ignore);
2500 
2501 int hid_add_device(struct hid_device *hdev)
2502 {
2503         static atomic_t id = ATOMIC_INIT(0);
2504         int ret;
2505 
2506         if (WARN_ON(hdev->status & HID_STAT_ADDED))
2507                 return -EBUSY;
2508 
2509         /* we need to kill them here, otherwise they will stay allocated to
2510          * wait for coming driver */
2511         if (hid_ignore(hdev))
2512                 return -ENODEV;
2513 
2514         /*
2515          * Check for the mandatory transport channel.
2516          */
2517          if (!hdev->ll_driver->raw_request) {
2518                 hid_err(hdev, "transport driver missing .raw_request()\n");
2519                 return -EINVAL;
2520          }
2521 
2522         /*
2523          * Read the device report descriptor once and use as template
2524          * for the driver-specific modifications.
2525          */
2526         ret = hdev->ll_driver->parse(hdev);
2527         if (ret)
2528                 return ret;
2529         if (!hdev->dev_rdesc)
2530                 return -ENODEV;
2531 
2532         /*
2533          * Scan generic devices for group information
2534          */
2535         if (hid_ignore_special_drivers ||
2536             !hid_match_id(hdev, hid_have_special_driver)) {
2537                 ret = hid_scan_report(hdev);
2538                 if (ret)
2539                         hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2540         }
2541 
2542         /* XXX hack, any other cleaner solution after the driver core
2543          * is converted to allow more than 20 bytes as the device name? */
2544         dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2545                      hdev->vendor, hdev->product, atomic_inc_return(&id));
2546 
2547         hid_debug_register(hdev, dev_name(&hdev->dev));
2548         ret = device_add(&hdev->dev);
2549         if (!ret)
2550                 hdev->status |= HID_STAT_ADDED;
2551         else
2552                 hid_debug_unregister(hdev);
2553 
2554         return ret;
2555 }
2556 EXPORT_SYMBOL_GPL(hid_add_device);
2557 
2558 /**
2559  * hid_allocate_device - allocate new hid device descriptor
2560  *
2561  * Allocate and initialize hid device, so that hid_destroy_device might be
2562  * used to free it.
2563  *
2564  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2565  * error value.
2566  */
2567 struct hid_device *hid_allocate_device(void)
2568 {
2569         struct hid_device *hdev;
2570         int ret = -ENOMEM;
2571 
2572         hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2573         if (hdev == NULL)
2574                 return ERR_PTR(ret);
2575 
2576         device_initialize(&hdev->dev);
2577         hdev->dev.release = hid_device_release;
2578         hdev->dev.bus = &hid_bus_type;
2579 
2580         hid_close_report(hdev);
2581 
2582         init_waitqueue_head(&hdev->debug_wait);
2583         INIT_LIST_HEAD(&hdev->debug_list);
2584         spin_lock_init(&hdev->debug_list_lock);
2585         sema_init(&hdev->driver_lock, 1);
2586         sema_init(&hdev->driver_input_lock, 1);
2587 
2588         return hdev;
2589 }
2590 EXPORT_SYMBOL_GPL(hid_allocate_device);
2591 
2592 static void hid_remove_device(struct hid_device *hdev)
2593 {
2594         if (hdev->status & HID_STAT_ADDED) {
2595                 device_del(&hdev->dev);
2596                 hid_debug_unregister(hdev);
2597                 hdev->status &= ~HID_STAT_ADDED;
2598         }
2599         kfree(hdev->dev_rdesc);
2600         hdev->dev_rdesc = NULL;
2601         hdev->dev_rsize = 0;
2602 }
2603 
2604 /**
2605  * hid_destroy_device - free previously allocated device
2606  *
2607  * @hdev: hid device
2608  *
2609  * If you allocate hid_device through hid_allocate_device, you should ever
2610  * free by this function.
2611  */
2612 void hid_destroy_device(struct hid_device *hdev)
2613 {
2614         hid_remove_device(hdev);
2615         put_device(&hdev->dev);
2616 }
2617 EXPORT_SYMBOL_GPL(hid_destroy_device);
2618 
2619 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2620                 const char *mod_name)
2621 {
2622         int ret;
2623 
2624         hdrv->driver.name = hdrv->name;
2625         hdrv->driver.bus = &hid_bus_type;
2626         hdrv->driver.owner = owner;
2627         hdrv->driver.mod_name = mod_name;
2628 
2629         INIT_LIST_HEAD(&hdrv->dyn_list);
2630         spin_lock_init(&hdrv->dyn_lock);
2631 
2632         ret = driver_register(&hdrv->driver);
2633         if (ret)
2634                 return ret;
2635 
2636         ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2637         if (ret)
2638                 driver_unregister(&hdrv->driver);
2639 
2640         return ret;
2641 }
2642 EXPORT_SYMBOL_GPL(__hid_register_driver);
2643 
2644 void hid_unregister_driver(struct hid_driver *hdrv)
2645 {
2646         driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2647         driver_unregister(&hdrv->driver);
2648         hid_free_dynids(hdrv);
2649 }
2650 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2651 
2652 int hid_check_keys_pressed(struct hid_device *hid)
2653 {
2654         struct hid_input *hidinput;
2655         int i;
2656 
2657         if (!(hid->claimed & HID_CLAIMED_INPUT))
2658                 return 0;
2659 
2660         list_for_each_entry(hidinput, &hid->inputs, list) {
2661                 for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2662                         if (hidinput->input->key[i])
2663                                 return 1;
2664         }
2665 
2666         return 0;
2667 }
2668 
2669 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2670 
2671 static int __init hid_init(void)
2672 {
2673         int ret;
2674 
2675         if (hid_debug)
2676                 pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2677                         "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2678 
2679         ret = bus_register(&hid_bus_type);
2680         if (ret) {
2681                 pr_err("can't register hid bus\n");
2682                 goto err;
2683         }
2684 
2685         ret = hidraw_init();
2686         if (ret)
2687                 goto err_bus;
2688 
2689         hid_debug_init();
2690 
2691         return 0;
2692 err_bus:
2693         bus_unregister(&hid_bus_type);
2694 err:
2695         return ret;
2696 }
2697 
2698 static void __exit hid_exit(void)
2699 {
2700         hid_debug_exit();
2701         hidraw_exit();
2702         bus_unregister(&hid_bus_type);
2703 }
2704 
2705 module_init(hid_init);
2706 module_exit(hid_exit);
2707 
2708 MODULE_AUTHOR("Andreas Gal");
2709 MODULE_AUTHOR("Vojtech Pavlik");
2710 MODULE_AUTHOR("Jiri Kosina");
2711 MODULE_LICENSE(DRIVER_LICENSE);
2712 
2713 

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