xref: /openbmc/linux/drivers/hid/hid-core.c (revision 174cd4b1)
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 
47 int hid_debug = 0;
48 module_param_named(debug, hid_debug, int, 0600);
49 MODULE_PARM_DESC(debug, "toggle HID debugging messages");
50 EXPORT_SYMBOL_GPL(hid_debug);
51 
52 static int hid_ignore_special_drivers = 0;
53 module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
54 MODULE_PARM_DESC(ignore_special_drivers, "Ignore any special drivers and handle all devices by generic driver");
55 
56 /*
57  * Register a new report for a device.
58  */
59 
60 struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
61 {
62 	struct hid_report_enum *report_enum = device->report_enum + type;
63 	struct hid_report *report;
64 
65 	if (id >= HID_MAX_IDS)
66 		return NULL;
67 	if (report_enum->report_id_hash[id])
68 		return report_enum->report_id_hash[id];
69 
70 	report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
71 	if (!report)
72 		return NULL;
73 
74 	if (id != 0)
75 		report_enum->numbered = 1;
76 
77 	report->id = id;
78 	report->type = type;
79 	report->size = 0;
80 	report->device = device;
81 	report_enum->report_id_hash[id] = report;
82 
83 	list_add_tail(&report->list, &report_enum->report_list);
84 
85 	return report;
86 }
87 EXPORT_SYMBOL_GPL(hid_register_report);
88 
89 /*
90  * Register a new field for this report.
91  */
92 
93 static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
94 {
95 	struct hid_field *field;
96 
97 	if (report->maxfield == HID_MAX_FIELDS) {
98 		hid_err(report->device, "too many fields in report\n");
99 		return NULL;
100 	}
101 
102 	field = kzalloc((sizeof(struct hid_field) +
103 			 usages * sizeof(struct hid_usage) +
104 			 values * sizeof(unsigned)), GFP_KERNEL);
105 	if (!field)
106 		return NULL;
107 
108 	field->index = report->maxfield++;
109 	report->field[field->index] = field;
110 	field->usage = (struct hid_usage *)(field + 1);
111 	field->value = (s32 *)(field->usage + usages);
112 	field->report = report;
113 
114 	return field;
115 }
116 
117 /*
118  * Open a collection. The type/usage is pushed on the stack.
119  */
120 
121 static int open_collection(struct hid_parser *parser, unsigned type)
122 {
123 	struct hid_collection *collection;
124 	unsigned usage;
125 
126 	usage = parser->local.usage[0];
127 
128 	if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
129 		hid_err(parser->device, "collection stack overflow\n");
130 		return -EINVAL;
131 	}
132 
133 	if (parser->device->maxcollection == parser->device->collection_size) {
134 		collection = kmalloc(sizeof(struct hid_collection) *
135 				parser->device->collection_size * 2, GFP_KERNEL);
136 		if (collection == NULL) {
137 			hid_err(parser->device, "failed to reallocate collection array\n");
138 			return -ENOMEM;
139 		}
140 		memcpy(collection, parser->device->collection,
141 			sizeof(struct hid_collection) *
142 			parser->device->collection_size);
143 		memset(collection + parser->device->collection_size, 0,
144 			sizeof(struct hid_collection) *
145 			parser->device->collection_size);
146 		kfree(parser->device->collection);
147 		parser->device->collection = collection;
148 		parser->device->collection_size *= 2;
149 	}
150 
151 	parser->collection_stack[parser->collection_stack_ptr++] =
152 		parser->device->maxcollection;
153 
154 	collection = parser->device->collection +
155 		parser->device->maxcollection++;
156 	collection->type = type;
157 	collection->usage = usage;
158 	collection->level = parser->collection_stack_ptr - 1;
159 
160 	if (type == HID_COLLECTION_APPLICATION)
161 		parser->device->maxapplication++;
162 
163 	return 0;
164 }
165 
166 /*
167  * Close a collection.
168  */
169 
170 static int close_collection(struct hid_parser *parser)
171 {
172 	if (!parser->collection_stack_ptr) {
173 		hid_err(parser->device, "collection stack underflow\n");
174 		return -EINVAL;
175 	}
176 	parser->collection_stack_ptr--;
177 	return 0;
178 }
179 
180 /*
181  * Climb up the stack, search for the specified collection type
182  * and return the usage.
183  */
184 
185 static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
186 {
187 	struct hid_collection *collection = parser->device->collection;
188 	int n;
189 
190 	for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
191 		unsigned index = parser->collection_stack[n];
192 		if (collection[index].type == type)
193 			return collection[index].usage;
194 	}
195 	return 0; /* we know nothing about this usage type */
196 }
197 
198 /*
199  * Add a usage to the temporary parser table.
200  */
201 
202 static int hid_add_usage(struct hid_parser *parser, unsigned usage)
203 {
204 	if (parser->local.usage_index >= HID_MAX_USAGES) {
205 		hid_err(parser->device, "usage index exceeded\n");
206 		return -1;
207 	}
208 	parser->local.usage[parser->local.usage_index] = usage;
209 	parser->local.collection_index[parser->local.usage_index] =
210 		parser->collection_stack_ptr ?
211 		parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
212 	parser->local.usage_index++;
213 	return 0;
214 }
215 
216 /*
217  * Register a new field for this report.
218  */
219 
220 static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
221 {
222 	struct hid_report *report;
223 	struct hid_field *field;
224 	unsigned usages;
225 	unsigned offset;
226 	unsigned i;
227 
228 	report = hid_register_report(parser->device, report_type, parser->global.report_id);
229 	if (!report) {
230 		hid_err(parser->device, "hid_register_report failed\n");
231 		return -1;
232 	}
233 
234 	/* Handle both signed and unsigned cases properly */
235 	if ((parser->global.logical_minimum < 0 &&
236 		parser->global.logical_maximum <
237 		parser->global.logical_minimum) ||
238 		(parser->global.logical_minimum >= 0 &&
239 		(__u32)parser->global.logical_maximum <
240 		(__u32)parser->global.logical_minimum)) {
241 		dbg_hid("logical range invalid 0x%x 0x%x\n",
242 			parser->global.logical_minimum,
243 			parser->global.logical_maximum);
244 		return -1;
245 	}
246 
247 	offset = report->size;
248 	report->size += parser->global.report_size * parser->global.report_count;
249 
250 	if (!parser->local.usage_index) /* Ignore padding fields */
251 		return 0;
252 
253 	usages = max_t(unsigned, parser->local.usage_index,
254 				 parser->global.report_count);
255 
256 	field = hid_register_field(report, usages, parser->global.report_count);
257 	if (!field)
258 		return 0;
259 
260 	field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
261 	field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
262 	field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
263 
264 	for (i = 0; i < usages; i++) {
265 		unsigned j = i;
266 		/* Duplicate the last usage we parsed if we have excess values */
267 		if (i >= parser->local.usage_index)
268 			j = parser->local.usage_index - 1;
269 		field->usage[i].hid = parser->local.usage[j];
270 		field->usage[i].collection_index =
271 			parser->local.collection_index[j];
272 		field->usage[i].usage_index = i;
273 	}
274 
275 	field->maxusage = usages;
276 	field->flags = flags;
277 	field->report_offset = offset;
278 	field->report_type = report_type;
279 	field->report_size = parser->global.report_size;
280 	field->report_count = parser->global.report_count;
281 	field->logical_minimum = parser->global.logical_minimum;
282 	field->logical_maximum = parser->global.logical_maximum;
283 	field->physical_minimum = parser->global.physical_minimum;
284 	field->physical_maximum = parser->global.physical_maximum;
285 	field->unit_exponent = parser->global.unit_exponent;
286 	field->unit = parser->global.unit;
287 
288 	return 0;
289 }
290 
291 /*
292  * Read data value from item.
293  */
294 
295 static u32 item_udata(struct hid_item *item)
296 {
297 	switch (item->size) {
298 	case 1: return item->data.u8;
299 	case 2: return item->data.u16;
300 	case 4: return item->data.u32;
301 	}
302 	return 0;
303 }
304 
305 static s32 item_sdata(struct hid_item *item)
306 {
307 	switch (item->size) {
308 	case 1: return item->data.s8;
309 	case 2: return item->data.s16;
310 	case 4: return item->data.s32;
311 	}
312 	return 0;
313 }
314 
315 /*
316  * Process a global item.
317  */
318 
319 static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
320 {
321 	__s32 raw_value;
322 	switch (item->tag) {
323 	case HID_GLOBAL_ITEM_TAG_PUSH:
324 
325 		if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
326 			hid_err(parser->device, "global environment stack overflow\n");
327 			return -1;
328 		}
329 
330 		memcpy(parser->global_stack + parser->global_stack_ptr++,
331 			&parser->global, sizeof(struct hid_global));
332 		return 0;
333 
334 	case HID_GLOBAL_ITEM_TAG_POP:
335 
336 		if (!parser->global_stack_ptr) {
337 			hid_err(parser->device, "global environment stack underflow\n");
338 			return -1;
339 		}
340 
341 		memcpy(&parser->global, parser->global_stack +
342 			--parser->global_stack_ptr, sizeof(struct hid_global));
343 		return 0;
344 
345 	case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
346 		parser->global.usage_page = item_udata(item);
347 		return 0;
348 
349 	case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
350 		parser->global.logical_minimum = item_sdata(item);
351 		return 0;
352 
353 	case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
354 		if (parser->global.logical_minimum < 0)
355 			parser->global.logical_maximum = item_sdata(item);
356 		else
357 			parser->global.logical_maximum = item_udata(item);
358 		return 0;
359 
360 	case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
361 		parser->global.physical_minimum = item_sdata(item);
362 		return 0;
363 
364 	case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
365 		if (parser->global.physical_minimum < 0)
366 			parser->global.physical_maximum = item_sdata(item);
367 		else
368 			parser->global.physical_maximum = item_udata(item);
369 		return 0;
370 
371 	case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
372 		/* Many devices provide unit exponent as a two's complement
373 		 * nibble due to the common misunderstanding of HID
374 		 * specification 1.11, 6.2.2.7 Global Items. Attempt to handle
375 		 * both this and the standard encoding. */
376 		raw_value = item_sdata(item);
377 		if (!(raw_value & 0xfffffff0))
378 			parser->global.unit_exponent = hid_snto32(raw_value, 4);
379 		else
380 			parser->global.unit_exponent = raw_value;
381 		return 0;
382 
383 	case HID_GLOBAL_ITEM_TAG_UNIT:
384 		parser->global.unit = item_udata(item);
385 		return 0;
386 
387 	case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
388 		parser->global.report_size = item_udata(item);
389 		if (parser->global.report_size > 128) {
390 			hid_err(parser->device, "invalid report_size %d\n",
391 					parser->global.report_size);
392 			return -1;
393 		}
394 		return 0;
395 
396 	case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
397 		parser->global.report_count = item_udata(item);
398 		if (parser->global.report_count > HID_MAX_USAGES) {
399 			hid_err(parser->device, "invalid report_count %d\n",
400 					parser->global.report_count);
401 			return -1;
402 		}
403 		return 0;
404 
405 	case HID_GLOBAL_ITEM_TAG_REPORT_ID:
406 		parser->global.report_id = item_udata(item);
407 		if (parser->global.report_id == 0 ||
408 		    parser->global.report_id >= HID_MAX_IDS) {
409 			hid_err(parser->device, "report_id %u is invalid\n",
410 				parser->global.report_id);
411 			return -1;
412 		}
413 		return 0;
414 
415 	default:
416 		hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
417 		return -1;
418 	}
419 }
420 
421 /*
422  * Process a local item.
423  */
424 
425 static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
426 {
427 	__u32 data;
428 	unsigned n;
429 	__u32 count;
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 		count = data - parser->local.usage_minimum;
494 		if (count + parser->local.usage_index >= HID_MAX_USAGES) {
495 			/*
496 			 * We do not warn if the name is not set, we are
497 			 * actually pre-scanning the device.
498 			 */
499 			if (dev_name(&parser->device->dev))
500 				hid_warn(parser->device,
501 					 "ignoring exceeding usage max\n");
502 			data = HID_MAX_USAGES - parser->local.usage_index +
503 				parser->local.usage_minimum - 1;
504 			if (data <= 0) {
505 				hid_err(parser->device,
506 					"no more usage index available\n");
507 				return -1;
508 			}
509 		}
510 
511 		for (n = parser->local.usage_minimum; n <= data; n++)
512 			if (hid_add_usage(parser, n)) {
513 				dbg_hid("hid_add_usage failed\n");
514 				return -1;
515 			}
516 		return 0;
517 
518 	default:
519 
520 		dbg_hid("unknown local item tag 0x%x\n", item->tag);
521 		return 0;
522 	}
523 	return 0;
524 }
525 
526 /*
527  * Process a main item.
528  */
529 
530 static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
531 {
532 	__u32 data;
533 	int ret;
534 
535 	data = item_udata(item);
536 
537 	switch (item->tag) {
538 	case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
539 		ret = open_collection(parser, data & 0xff);
540 		break;
541 	case HID_MAIN_ITEM_TAG_END_COLLECTION:
542 		ret = close_collection(parser);
543 		break;
544 	case HID_MAIN_ITEM_TAG_INPUT:
545 		ret = hid_add_field(parser, HID_INPUT_REPORT, data);
546 		break;
547 	case HID_MAIN_ITEM_TAG_OUTPUT:
548 		ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
549 		break;
550 	case HID_MAIN_ITEM_TAG_FEATURE:
551 		ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
552 		break;
553 	default:
554 		hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
555 		ret = 0;
556 	}
557 
558 	memset(&parser->local, 0, sizeof(parser->local));	/* Reset the local parser environment */
559 
560 	return ret;
561 }
562 
563 /*
564  * Process a reserved item.
565  */
566 
567 static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
568 {
569 	dbg_hid("reserved item type, tag 0x%x\n", item->tag);
570 	return 0;
571 }
572 
573 /*
574  * Free a report and all registered fields. The field->usage and
575  * field->value table's are allocated behind the field, so we need
576  * only to free(field) itself.
577  */
578 
579 static void hid_free_report(struct hid_report *report)
580 {
581 	unsigned n;
582 
583 	for (n = 0; n < report->maxfield; n++)
584 		kfree(report->field[n]);
585 	kfree(report);
586 }
587 
588 /*
589  * Close report. This function returns the device
590  * state to the point prior to hid_open_report().
591  */
592 static void hid_close_report(struct hid_device *device)
593 {
594 	unsigned i, j;
595 
596 	for (i = 0; i < HID_REPORT_TYPES; i++) {
597 		struct hid_report_enum *report_enum = device->report_enum + i;
598 
599 		for (j = 0; j < HID_MAX_IDS; j++) {
600 			struct hid_report *report = report_enum->report_id_hash[j];
601 			if (report)
602 				hid_free_report(report);
603 		}
604 		memset(report_enum, 0, sizeof(*report_enum));
605 		INIT_LIST_HEAD(&report_enum->report_list);
606 	}
607 
608 	kfree(device->rdesc);
609 	device->rdesc = NULL;
610 	device->rsize = 0;
611 
612 	kfree(device->collection);
613 	device->collection = NULL;
614 	device->collection_size = 0;
615 	device->maxcollection = 0;
616 	device->maxapplication = 0;
617 
618 	device->status &= ~HID_STAT_PARSED;
619 }
620 
621 /*
622  * Free a device structure, all reports, and all fields.
623  */
624 
625 static void hid_device_release(struct device *dev)
626 {
627 	struct hid_device *hid = to_hid_device(dev);
628 
629 	hid_close_report(hid);
630 	kfree(hid->dev_rdesc);
631 	kfree(hid);
632 }
633 
634 /*
635  * Fetch a report description item from the data stream. We support long
636  * items, though they are not used yet.
637  */
638 
639 static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
640 {
641 	u8 b;
642 
643 	if ((end - start) <= 0)
644 		return NULL;
645 
646 	b = *start++;
647 
648 	item->type = (b >> 2) & 3;
649 	item->tag  = (b >> 4) & 15;
650 
651 	if (item->tag == HID_ITEM_TAG_LONG) {
652 
653 		item->format = HID_ITEM_FORMAT_LONG;
654 
655 		if ((end - start) < 2)
656 			return NULL;
657 
658 		item->size = *start++;
659 		item->tag  = *start++;
660 
661 		if ((end - start) < item->size)
662 			return NULL;
663 
664 		item->data.longdata = start;
665 		start += item->size;
666 		return start;
667 	}
668 
669 	item->format = HID_ITEM_FORMAT_SHORT;
670 	item->size = b & 3;
671 
672 	switch (item->size) {
673 	case 0:
674 		return start;
675 
676 	case 1:
677 		if ((end - start) < 1)
678 			return NULL;
679 		item->data.u8 = *start++;
680 		return start;
681 
682 	case 2:
683 		if ((end - start) < 2)
684 			return NULL;
685 		item->data.u16 = get_unaligned_le16(start);
686 		start = (__u8 *)((__le16 *)start + 1);
687 		return start;
688 
689 	case 3:
690 		item->size++;
691 		if ((end - start) < 4)
692 			return NULL;
693 		item->data.u32 = get_unaligned_le32(start);
694 		start = (__u8 *)((__le32 *)start + 1);
695 		return start;
696 	}
697 
698 	return NULL;
699 }
700 
701 static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
702 {
703 	struct hid_device *hid = parser->device;
704 
705 	if (usage == HID_DG_CONTACTID)
706 		hid->group = HID_GROUP_MULTITOUCH;
707 }
708 
709 static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
710 {
711 	if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
712 	    parser->global.report_size == 8)
713 		parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
714 }
715 
716 static void hid_scan_collection(struct hid_parser *parser, unsigned type)
717 {
718 	struct hid_device *hid = parser->device;
719 	int i;
720 
721 	if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
722 	    type == HID_COLLECTION_PHYSICAL)
723 		hid->group = HID_GROUP_SENSOR_HUB;
724 
725 	if (hid->vendor == USB_VENDOR_ID_MICROSOFT &&
726 	    hid->product == USB_DEVICE_ID_MS_POWER_COVER &&
727 	    hid->group == HID_GROUP_MULTITOUCH)
728 		hid->group = HID_GROUP_GENERIC;
729 
730 	if ((parser->global.usage_page << 16) == HID_UP_GENDESK)
731 		for (i = 0; i < parser->local.usage_index; i++)
732 			if (parser->local.usage[i] == HID_GD_POINTER)
733 				parser->scan_flags |= HID_SCAN_FLAG_GD_POINTER;
734 
735 	if ((parser->global.usage_page << 16) >= HID_UP_MSVENDOR)
736 		parser->scan_flags |= HID_SCAN_FLAG_VENDOR_SPECIFIC;
737 }
738 
739 static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
740 {
741 	__u32 data;
742 	int i;
743 
744 	data = item_udata(item);
745 
746 	switch (item->tag) {
747 	case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
748 		hid_scan_collection(parser, data & 0xff);
749 		break;
750 	case HID_MAIN_ITEM_TAG_END_COLLECTION:
751 		break;
752 	case HID_MAIN_ITEM_TAG_INPUT:
753 		/* ignore constant inputs, they will be ignored by hid-input */
754 		if (data & HID_MAIN_ITEM_CONSTANT)
755 			break;
756 		for (i = 0; i < parser->local.usage_index; i++)
757 			hid_scan_input_usage(parser, parser->local.usage[i]);
758 		break;
759 	case HID_MAIN_ITEM_TAG_OUTPUT:
760 		break;
761 	case HID_MAIN_ITEM_TAG_FEATURE:
762 		for (i = 0; i < parser->local.usage_index; i++)
763 			hid_scan_feature_usage(parser, parser->local.usage[i]);
764 		break;
765 	}
766 
767 	/* Reset the local parser environment */
768 	memset(&parser->local, 0, sizeof(parser->local));
769 
770 	return 0;
771 }
772 
773 /*
774  * Scan a report descriptor before the device is added to the bus.
775  * Sets device groups and other properties that determine what driver
776  * to load.
777  */
778 static int hid_scan_report(struct hid_device *hid)
779 {
780 	struct hid_parser *parser;
781 	struct hid_item item;
782 	__u8 *start = hid->dev_rdesc;
783 	__u8 *end = start + hid->dev_rsize;
784 	static int (*dispatch_type[])(struct hid_parser *parser,
785 				      struct hid_item *item) = {
786 		hid_scan_main,
787 		hid_parser_global,
788 		hid_parser_local,
789 		hid_parser_reserved
790 	};
791 
792 	parser = vzalloc(sizeof(struct hid_parser));
793 	if (!parser)
794 		return -ENOMEM;
795 
796 	parser->device = hid;
797 	hid->group = HID_GROUP_GENERIC;
798 
799 	/*
800 	 * The parsing is simpler than the one in hid_open_report() as we should
801 	 * be robust against hid errors. Those errors will be raised by
802 	 * hid_open_report() anyway.
803 	 */
804 	while ((start = fetch_item(start, end, &item)) != NULL)
805 		dispatch_type[item.type](parser, &item);
806 
807 	/*
808 	 * Handle special flags set during scanning.
809 	 */
810 	if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
811 	    (hid->group == HID_GROUP_MULTITOUCH))
812 		hid->group = HID_GROUP_MULTITOUCH_WIN_8;
813 
814 	/*
815 	 * Vendor specific handlings
816 	 */
817 	switch (hid->vendor) {
818 	case USB_VENDOR_ID_WACOM:
819 		hid->group = HID_GROUP_WACOM;
820 		break;
821 	case USB_VENDOR_ID_SYNAPTICS:
822 		if (hid->group == HID_GROUP_GENERIC ||
823 		    hid->group == HID_GROUP_MULTITOUCH_WIN_8)
824 			if ((parser->scan_flags & HID_SCAN_FLAG_VENDOR_SPECIFIC)
825 			    && (parser->scan_flags & HID_SCAN_FLAG_GD_POINTER))
826 				/*
827 				 * hid-rmi should take care of them,
828 				 * not hid-generic
829 				 */
830 				if (IS_ENABLED(CONFIG_HID_RMI))
831 					hid->group = HID_GROUP_RMI;
832 		break;
833 	}
834 
835 	vfree(parser);
836 	return 0;
837 }
838 
839 /**
840  * hid_parse_report - parse device report
841  *
842  * @device: hid device
843  * @start: report start
844  * @size: report size
845  *
846  * Allocate the device report as read by the bus driver. This function should
847  * only be called from parse() in ll drivers.
848  */
849 int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
850 {
851 	hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
852 	if (!hid->dev_rdesc)
853 		return -ENOMEM;
854 	hid->dev_rsize = size;
855 	return 0;
856 }
857 EXPORT_SYMBOL_GPL(hid_parse_report);
858 
859 static const char * const hid_report_names[] = {
860 	"HID_INPUT_REPORT",
861 	"HID_OUTPUT_REPORT",
862 	"HID_FEATURE_REPORT",
863 };
864 /**
865  * hid_validate_values - validate existing device report's value indexes
866  *
867  * @device: hid device
868  * @type: which report type to examine
869  * @id: which report ID to examine (0 for first)
870  * @field_index: which report field to examine
871  * @report_counts: expected number of values
872  *
873  * Validate the number of values in a given field of a given report, after
874  * parsing.
875  */
876 struct hid_report *hid_validate_values(struct hid_device *hid,
877 				       unsigned int type, unsigned int id,
878 				       unsigned int field_index,
879 				       unsigned int report_counts)
880 {
881 	struct hid_report *report;
882 
883 	if (type > HID_FEATURE_REPORT) {
884 		hid_err(hid, "invalid HID report type %u\n", type);
885 		return NULL;
886 	}
887 
888 	if (id >= HID_MAX_IDS) {
889 		hid_err(hid, "invalid HID report id %u\n", id);
890 		return NULL;
891 	}
892 
893 	/*
894 	 * Explicitly not using hid_get_report() here since it depends on
895 	 * ->numbered being checked, which may not always be the case when
896 	 * drivers go to access report values.
897 	 */
898 	if (id == 0) {
899 		/*
900 		 * Validating on id 0 means we should examine the first
901 		 * report in the list.
902 		 */
903 		report = list_entry(
904 				hid->report_enum[type].report_list.next,
905 				struct hid_report, list);
906 	} else {
907 		report = hid->report_enum[type].report_id_hash[id];
908 	}
909 	if (!report) {
910 		hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
911 		return NULL;
912 	}
913 	if (report->maxfield <= field_index) {
914 		hid_err(hid, "not enough fields in %s %u\n",
915 			hid_report_names[type], id);
916 		return NULL;
917 	}
918 	if (report->field[field_index]->report_count < report_counts) {
919 		hid_err(hid, "not enough values in %s %u field %u\n",
920 			hid_report_names[type], id, field_index);
921 		return NULL;
922 	}
923 	return report;
924 }
925 EXPORT_SYMBOL_GPL(hid_validate_values);
926 
927 /**
928  * hid_open_report - open a driver-specific device report
929  *
930  * @device: hid device
931  *
932  * Parse a report description into a hid_device structure. Reports are
933  * enumerated, fields are attached to these reports.
934  * 0 returned on success, otherwise nonzero error value.
935  *
936  * This function (or the equivalent hid_parse() macro) should only be
937  * called from probe() in drivers, before starting the device.
938  */
939 int hid_open_report(struct hid_device *device)
940 {
941 	struct hid_parser *parser;
942 	struct hid_item item;
943 	unsigned int size;
944 	__u8 *start;
945 	__u8 *buf;
946 	__u8 *end;
947 	int ret;
948 	static int (*dispatch_type[])(struct hid_parser *parser,
949 				      struct hid_item *item) = {
950 		hid_parser_main,
951 		hid_parser_global,
952 		hid_parser_local,
953 		hid_parser_reserved
954 	};
955 
956 	if (WARN_ON(device->status & HID_STAT_PARSED))
957 		return -EBUSY;
958 
959 	start = device->dev_rdesc;
960 	if (WARN_ON(!start))
961 		return -ENODEV;
962 	size = device->dev_rsize;
963 
964 	buf = kmemdup(start, size, GFP_KERNEL);
965 	if (buf == NULL)
966 		return -ENOMEM;
967 
968 	if (device->driver->report_fixup)
969 		start = device->driver->report_fixup(device, buf, &size);
970 	else
971 		start = buf;
972 
973 	start = kmemdup(start, size, GFP_KERNEL);
974 	kfree(buf);
975 	if (start == NULL)
976 		return -ENOMEM;
977 
978 	device->rdesc = start;
979 	device->rsize = size;
980 
981 	parser = vzalloc(sizeof(struct hid_parser));
982 	if (!parser) {
983 		ret = -ENOMEM;
984 		goto err;
985 	}
986 
987 	parser->device = device;
988 
989 	end = start + size;
990 
991 	device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
992 				     sizeof(struct hid_collection), GFP_KERNEL);
993 	if (!device->collection) {
994 		ret = -ENOMEM;
995 		goto err;
996 	}
997 	device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
998 
999 	ret = -EINVAL;
1000 	while ((start = fetch_item(start, end, &item)) != NULL) {
1001 
1002 		if (item.format != HID_ITEM_FORMAT_SHORT) {
1003 			hid_err(device, "unexpected long global item\n");
1004 			goto err;
1005 		}
1006 
1007 		if (dispatch_type[item.type](parser, &item)) {
1008 			hid_err(device, "item %u %u %u %u parsing failed\n",
1009 				item.format, (unsigned)item.size,
1010 				(unsigned)item.type, (unsigned)item.tag);
1011 			goto err;
1012 		}
1013 
1014 		if (start == end) {
1015 			if (parser->collection_stack_ptr) {
1016 				hid_err(device, "unbalanced collection at end of report description\n");
1017 				goto err;
1018 			}
1019 			if (parser->local.delimiter_depth) {
1020 				hid_err(device, "unbalanced delimiter at end of report description\n");
1021 				goto err;
1022 			}
1023 			vfree(parser);
1024 			device->status |= HID_STAT_PARSED;
1025 			return 0;
1026 		}
1027 	}
1028 
1029 	hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
1030 err:
1031 	vfree(parser);
1032 	hid_close_report(device);
1033 	return ret;
1034 }
1035 EXPORT_SYMBOL_GPL(hid_open_report);
1036 
1037 /*
1038  * Convert a signed n-bit integer to signed 32-bit integer. Common
1039  * cases are done through the compiler, the screwed things has to be
1040  * done by hand.
1041  */
1042 
1043 static s32 snto32(__u32 value, unsigned n)
1044 {
1045 	switch (n) {
1046 	case 8:  return ((__s8)value);
1047 	case 16: return ((__s16)value);
1048 	case 32: return ((__s32)value);
1049 	}
1050 	return value & (1 << (n - 1)) ? value | (-1 << n) : value;
1051 }
1052 
1053 s32 hid_snto32(__u32 value, unsigned n)
1054 {
1055 	return snto32(value, n);
1056 }
1057 EXPORT_SYMBOL_GPL(hid_snto32);
1058 
1059 /*
1060  * Convert a signed 32-bit integer to a signed n-bit integer.
1061  */
1062 
1063 static u32 s32ton(__s32 value, unsigned n)
1064 {
1065 	s32 a = value >> (n - 1);
1066 	if (a && a != -1)
1067 		return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1068 	return value & ((1 << n) - 1);
1069 }
1070 
1071 /*
1072  * Extract/implement a data field from/to a little endian report (bit array).
1073  *
1074  * Code sort-of follows HID spec:
1075  *     http://www.usb.org/developers/hidpage/HID1_11.pdf
1076  *
1077  * While the USB HID spec allows unlimited length bit fields in "report
1078  * descriptors", most devices never use more than 16 bits.
1079  * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1080  * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1081  */
1082 
1083 static u32 __extract(u8 *report, unsigned offset, int n)
1084 {
1085 	unsigned int idx = offset / 8;
1086 	unsigned int bit_nr = 0;
1087 	unsigned int bit_shift = offset % 8;
1088 	int bits_to_copy = 8 - bit_shift;
1089 	u32 value = 0;
1090 	u32 mask = n < 32 ? (1U << n) - 1 : ~0U;
1091 
1092 	while (n > 0) {
1093 		value |= ((u32)report[idx] >> bit_shift) << bit_nr;
1094 		n -= bits_to_copy;
1095 		bit_nr += bits_to_copy;
1096 		bits_to_copy = 8;
1097 		bit_shift = 0;
1098 		idx++;
1099 	}
1100 
1101 	return value & mask;
1102 }
1103 
1104 u32 hid_field_extract(const struct hid_device *hid, u8 *report,
1105 			unsigned offset, unsigned n)
1106 {
1107 	if (n > 32) {
1108 		hid_warn(hid, "hid_field_extract() called with n (%d) > 32! (%s)\n",
1109 			 n, current->comm);
1110 		n = 32;
1111 	}
1112 
1113 	return __extract(report, offset, n);
1114 }
1115 EXPORT_SYMBOL_GPL(hid_field_extract);
1116 
1117 /*
1118  * "implement" : set bits in a little endian bit stream.
1119  * Same concepts as "extract" (see comments above).
1120  * The data mangled in the bit stream remains in little endian
1121  * order the whole time. It make more sense to talk about
1122  * endianness of register values by considering a register
1123  * a "cached" copy of the little endian bit stream.
1124  */
1125 
1126 static void __implement(u8 *report, unsigned offset, int n, u32 value)
1127 {
1128 	unsigned int idx = offset / 8;
1129 	unsigned int bit_shift = offset % 8;
1130 	int bits_to_set = 8 - bit_shift;
1131 
1132 	while (n - bits_to_set >= 0) {
1133 		report[idx] &= ~(0xff << bit_shift);
1134 		report[idx] |= value << bit_shift;
1135 		value >>= bits_to_set;
1136 		n -= bits_to_set;
1137 		bits_to_set = 8;
1138 		bit_shift = 0;
1139 		idx++;
1140 	}
1141 
1142 	/* last nibble */
1143 	if (n) {
1144 		u8 bit_mask = ((1U << n) - 1);
1145 		report[idx] &= ~(bit_mask << bit_shift);
1146 		report[idx] |= value << bit_shift;
1147 	}
1148 }
1149 
1150 static void implement(const struct hid_device *hid, u8 *report,
1151 		      unsigned offset, unsigned n, u32 value)
1152 {
1153 	if (unlikely(n > 32)) {
1154 		hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1155 			 __func__, n, current->comm);
1156 		n = 32;
1157 	} else if (n < 32) {
1158 		u32 m = (1U << n) - 1;
1159 
1160 		if (unlikely(value > m)) {
1161 			hid_warn(hid,
1162 				 "%s() called with too large value %d (n: %d)! (%s)\n",
1163 				 __func__, value, n, current->comm);
1164 			WARN_ON(1);
1165 			value &= m;
1166 		}
1167 	}
1168 
1169 	__implement(report, offset, n, value);
1170 }
1171 
1172 /*
1173  * Search an array for a value.
1174  */
1175 
1176 static int search(__s32 *array, __s32 value, unsigned n)
1177 {
1178 	while (n--) {
1179 		if (*array++ == value)
1180 			return 0;
1181 	}
1182 	return -1;
1183 }
1184 
1185 /**
1186  * hid_match_report - check if driver's raw_event should be called
1187  *
1188  * @hid: hid device
1189  * @report_type: type to match against
1190  *
1191  * compare hid->driver->report_table->report_type to report->type
1192  */
1193 static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1194 {
1195 	const struct hid_report_id *id = hid->driver->report_table;
1196 
1197 	if (!id) /* NULL means all */
1198 		return 1;
1199 
1200 	for (; id->report_type != HID_TERMINATOR; id++)
1201 		if (id->report_type == HID_ANY_ID ||
1202 				id->report_type == report->type)
1203 			return 1;
1204 	return 0;
1205 }
1206 
1207 /**
1208  * hid_match_usage - check if driver's event should be called
1209  *
1210  * @hid: hid device
1211  * @usage: usage to match against
1212  *
1213  * compare hid->driver->usage_table->usage_{type,code} to
1214  * usage->usage_{type,code}
1215  */
1216 static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1217 {
1218 	const struct hid_usage_id *id = hid->driver->usage_table;
1219 
1220 	if (!id) /* NULL means all */
1221 		return 1;
1222 
1223 	for (; id->usage_type != HID_ANY_ID - 1; id++)
1224 		if ((id->usage_hid == HID_ANY_ID ||
1225 				id->usage_hid == usage->hid) &&
1226 				(id->usage_type == HID_ANY_ID ||
1227 				id->usage_type == usage->type) &&
1228 				(id->usage_code == HID_ANY_ID ||
1229 				 id->usage_code == usage->code))
1230 			return 1;
1231 	return 0;
1232 }
1233 
1234 static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1235 		struct hid_usage *usage, __s32 value, int interrupt)
1236 {
1237 	struct hid_driver *hdrv = hid->driver;
1238 	int ret;
1239 
1240 	if (!list_empty(&hid->debug_list))
1241 		hid_dump_input(hid, usage, value);
1242 
1243 	if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1244 		ret = hdrv->event(hid, field, usage, value);
1245 		if (ret != 0) {
1246 			if (ret < 0)
1247 				hid_err(hid, "%s's event failed with %d\n",
1248 						hdrv->name, ret);
1249 			return;
1250 		}
1251 	}
1252 
1253 	if (hid->claimed & HID_CLAIMED_INPUT)
1254 		hidinput_hid_event(hid, field, usage, value);
1255 	if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1256 		hid->hiddev_hid_event(hid, field, usage, value);
1257 }
1258 
1259 /*
1260  * Analyse a received field, and fetch the data from it. The field
1261  * content is stored for next report processing (we do differential
1262  * reporting to the layer).
1263  */
1264 
1265 static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1266 			    __u8 *data, int interrupt)
1267 {
1268 	unsigned n;
1269 	unsigned count = field->report_count;
1270 	unsigned offset = field->report_offset;
1271 	unsigned size = field->report_size;
1272 	__s32 min = field->logical_minimum;
1273 	__s32 max = field->logical_maximum;
1274 	__s32 *value;
1275 
1276 	value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1277 	if (!value)
1278 		return;
1279 
1280 	for (n = 0; n < count; n++) {
1281 
1282 		value[n] = min < 0 ?
1283 			snto32(hid_field_extract(hid, data, offset + n * size,
1284 			       size), size) :
1285 			hid_field_extract(hid, data, offset + n * size, size);
1286 
1287 		/* Ignore report if ErrorRollOver */
1288 		if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1289 		    value[n] >= min && value[n] <= max &&
1290 		    value[n] - min < field->maxusage &&
1291 		    field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1292 			goto exit;
1293 	}
1294 
1295 	for (n = 0; n < count; n++) {
1296 
1297 		if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1298 			hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1299 			continue;
1300 		}
1301 
1302 		if (field->value[n] >= min && field->value[n] <= max
1303 			&& field->value[n] - min < field->maxusage
1304 			&& field->usage[field->value[n] - min].hid
1305 			&& search(value, field->value[n], count))
1306 				hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1307 
1308 		if (value[n] >= min && value[n] <= max
1309 			&& value[n] - min < field->maxusage
1310 			&& field->usage[value[n] - min].hid
1311 			&& search(field->value, value[n], count))
1312 				hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1313 	}
1314 
1315 	memcpy(field->value, value, count * sizeof(__s32));
1316 exit:
1317 	kfree(value);
1318 }
1319 
1320 /*
1321  * Output the field into the report.
1322  */
1323 
1324 static void hid_output_field(const struct hid_device *hid,
1325 			     struct hid_field *field, __u8 *data)
1326 {
1327 	unsigned count = field->report_count;
1328 	unsigned offset = field->report_offset;
1329 	unsigned size = field->report_size;
1330 	unsigned n;
1331 
1332 	for (n = 0; n < count; n++) {
1333 		if (field->logical_minimum < 0)	/* signed values */
1334 			implement(hid, data, offset + n * size, size,
1335 				  s32ton(field->value[n], size));
1336 		else				/* unsigned values */
1337 			implement(hid, data, offset + n * size, size,
1338 				  field->value[n]);
1339 	}
1340 }
1341 
1342 /*
1343  * Create a report. 'data' has to be allocated using
1344  * hid_alloc_report_buf() so that it has proper size.
1345  */
1346 
1347 void hid_output_report(struct hid_report *report, __u8 *data)
1348 {
1349 	unsigned n;
1350 
1351 	if (report->id > 0)
1352 		*data++ = report->id;
1353 
1354 	memset(data, 0, ((report->size - 1) >> 3) + 1);
1355 	for (n = 0; n < report->maxfield; n++)
1356 		hid_output_field(report->device, report->field[n], data);
1357 }
1358 EXPORT_SYMBOL_GPL(hid_output_report);
1359 
1360 /*
1361  * Allocator for buffer that is going to be passed to hid_output_report()
1362  */
1363 u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1364 {
1365 	/*
1366 	 * 7 extra bytes are necessary to achieve proper functionality
1367 	 * of implement() working on 8 byte chunks
1368 	 */
1369 
1370 	int len = hid_report_len(report) + 7;
1371 
1372 	return kmalloc(len, flags);
1373 }
1374 EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1375 
1376 /*
1377  * Set a field value. The report this field belongs to has to be
1378  * created and transferred to the device, to set this value in the
1379  * device.
1380  */
1381 
1382 int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1383 {
1384 	unsigned size;
1385 
1386 	if (!field)
1387 		return -1;
1388 
1389 	size = field->report_size;
1390 
1391 	hid_dump_input(field->report->device, field->usage + offset, value);
1392 
1393 	if (offset >= field->report_count) {
1394 		hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1395 				offset, field->report_count);
1396 		return -1;
1397 	}
1398 	if (field->logical_minimum < 0) {
1399 		if (value != snto32(s32ton(value, size), size)) {
1400 			hid_err(field->report->device, "value %d is out of range\n", value);
1401 			return -1;
1402 		}
1403 	}
1404 	field->value[offset] = value;
1405 	return 0;
1406 }
1407 EXPORT_SYMBOL_GPL(hid_set_field);
1408 
1409 static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1410 		const u8 *data)
1411 {
1412 	struct hid_report *report;
1413 	unsigned int n = 0;	/* Normally report number is 0 */
1414 
1415 	/* Device uses numbered reports, data[0] is report number */
1416 	if (report_enum->numbered)
1417 		n = *data;
1418 
1419 	report = report_enum->report_id_hash[n];
1420 	if (report == NULL)
1421 		dbg_hid("undefined report_id %u received\n", n);
1422 
1423 	return report;
1424 }
1425 
1426 /*
1427  * Implement a generic .request() callback, using .raw_request()
1428  * DO NOT USE in hid drivers directly, but through hid_hw_request instead.
1429  */
1430 void __hid_request(struct hid_device *hid, struct hid_report *report,
1431 		int reqtype)
1432 {
1433 	char *buf;
1434 	int ret;
1435 	int len;
1436 
1437 	buf = hid_alloc_report_buf(report, GFP_KERNEL);
1438 	if (!buf)
1439 		return;
1440 
1441 	len = hid_report_len(report);
1442 
1443 	if (reqtype == HID_REQ_SET_REPORT)
1444 		hid_output_report(report, buf);
1445 
1446 	ret = hid->ll_driver->raw_request(hid, report->id, buf, len,
1447 					  report->type, reqtype);
1448 	if (ret < 0) {
1449 		dbg_hid("unable to complete request: %d\n", ret);
1450 		goto out;
1451 	}
1452 
1453 	if (reqtype == HID_REQ_GET_REPORT)
1454 		hid_input_report(hid, report->type, buf, ret, 0);
1455 
1456 out:
1457 	kfree(buf);
1458 }
1459 EXPORT_SYMBOL_GPL(__hid_request);
1460 
1461 int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1462 		int interrupt)
1463 {
1464 	struct hid_report_enum *report_enum = hid->report_enum + type;
1465 	struct hid_report *report;
1466 	struct hid_driver *hdrv;
1467 	unsigned int a;
1468 	int rsize, csize = size;
1469 	u8 *cdata = data;
1470 	int ret = 0;
1471 
1472 	report = hid_get_report(report_enum, data);
1473 	if (!report)
1474 		goto out;
1475 
1476 	if (report_enum->numbered) {
1477 		cdata++;
1478 		csize--;
1479 	}
1480 
1481 	rsize = ((report->size - 1) >> 3) + 1;
1482 
1483 	if (rsize > HID_MAX_BUFFER_SIZE)
1484 		rsize = HID_MAX_BUFFER_SIZE;
1485 
1486 	if (csize < rsize) {
1487 		dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1488 				csize, rsize);
1489 		memset(cdata + csize, 0, rsize - csize);
1490 	}
1491 
1492 	if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1493 		hid->hiddev_report_event(hid, report);
1494 	if (hid->claimed & HID_CLAIMED_HIDRAW) {
1495 		ret = hidraw_report_event(hid, data, size);
1496 		if (ret)
1497 			goto out;
1498 	}
1499 
1500 	if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1501 		for (a = 0; a < report->maxfield; a++)
1502 			hid_input_field(hid, report->field[a], cdata, interrupt);
1503 		hdrv = hid->driver;
1504 		if (hdrv && hdrv->report)
1505 			hdrv->report(hid, report);
1506 	}
1507 
1508 	if (hid->claimed & HID_CLAIMED_INPUT)
1509 		hidinput_report_event(hid, report);
1510 out:
1511 	return ret;
1512 }
1513 EXPORT_SYMBOL_GPL(hid_report_raw_event);
1514 
1515 /**
1516  * hid_input_report - report data from lower layer (usb, bt...)
1517  *
1518  * @hid: hid device
1519  * @type: HID report type (HID_*_REPORT)
1520  * @data: report contents
1521  * @size: size of data parameter
1522  * @interrupt: distinguish between interrupt and control transfers
1523  *
1524  * This is data entry for lower layers.
1525  */
1526 int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1527 {
1528 	struct hid_report_enum *report_enum;
1529 	struct hid_driver *hdrv;
1530 	struct hid_report *report;
1531 	int ret = 0;
1532 
1533 	if (!hid)
1534 		return -ENODEV;
1535 
1536 	if (down_trylock(&hid->driver_input_lock))
1537 		return -EBUSY;
1538 
1539 	if (!hid->driver) {
1540 		ret = -ENODEV;
1541 		goto unlock;
1542 	}
1543 	report_enum = hid->report_enum + type;
1544 	hdrv = hid->driver;
1545 
1546 	if (!size) {
1547 		dbg_hid("empty report\n");
1548 		ret = -1;
1549 		goto unlock;
1550 	}
1551 
1552 	/* Avoid unnecessary overhead if debugfs is disabled */
1553 	if (!list_empty(&hid->debug_list))
1554 		hid_dump_report(hid, type, data, size);
1555 
1556 	report = hid_get_report(report_enum, data);
1557 
1558 	if (!report) {
1559 		ret = -1;
1560 		goto unlock;
1561 	}
1562 
1563 	if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1564 		ret = hdrv->raw_event(hid, report, data, size);
1565 		if (ret < 0)
1566 			goto unlock;
1567 	}
1568 
1569 	ret = hid_report_raw_event(hid, type, data, size, interrupt);
1570 
1571 unlock:
1572 	up(&hid->driver_input_lock);
1573 	return ret;
1574 }
1575 EXPORT_SYMBOL_GPL(hid_input_report);
1576 
1577 static bool hid_match_one_id(struct hid_device *hdev,
1578 		const struct hid_device_id *id)
1579 {
1580 	return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1581 		(id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1582 		(id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1583 		(id->product == HID_ANY_ID || id->product == hdev->product);
1584 }
1585 
1586 const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1587 		const struct hid_device_id *id)
1588 {
1589 	for (; id->bus; id++)
1590 		if (hid_match_one_id(hdev, id))
1591 			return id;
1592 
1593 	return NULL;
1594 }
1595 
1596 static const struct hid_device_id hid_hiddev_list[] = {
1597 	{ HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1598 	{ HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1599 	{ }
1600 };
1601 
1602 static bool hid_hiddev(struct hid_device *hdev)
1603 {
1604 	return !!hid_match_id(hdev, hid_hiddev_list);
1605 }
1606 
1607 
1608 static ssize_t
1609 read_report_descriptor(struct file *filp, struct kobject *kobj,
1610 		struct bin_attribute *attr,
1611 		char *buf, loff_t off, size_t count)
1612 {
1613 	struct device *dev = kobj_to_dev(kobj);
1614 	struct hid_device *hdev = to_hid_device(dev);
1615 
1616 	if (off >= hdev->rsize)
1617 		return 0;
1618 
1619 	if (off + count > hdev->rsize)
1620 		count = hdev->rsize - off;
1621 
1622 	memcpy(buf, hdev->rdesc + off, count);
1623 
1624 	return count;
1625 }
1626 
1627 static ssize_t
1628 show_country(struct device *dev, struct device_attribute *attr,
1629 		char *buf)
1630 {
1631 	struct hid_device *hdev = to_hid_device(dev);
1632 
1633 	return sprintf(buf, "%02x\n", hdev->country & 0xff);
1634 }
1635 
1636 static struct bin_attribute dev_bin_attr_report_desc = {
1637 	.attr = { .name = "report_descriptor", .mode = 0444 },
1638 	.read = read_report_descriptor,
1639 	.size = HID_MAX_DESCRIPTOR_SIZE,
1640 };
1641 
1642 static struct device_attribute dev_attr_country = {
1643 	.attr = { .name = "country", .mode = 0444 },
1644 	.show = show_country,
1645 };
1646 
1647 int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1648 {
1649 	static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1650 		"Joystick", "Gamepad", "Keyboard", "Keypad",
1651 		"Multi-Axis Controller"
1652 	};
1653 	const char *type, *bus;
1654 	char buf[64] = "";
1655 	unsigned int i;
1656 	int len;
1657 	int ret;
1658 
1659 	if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1660 		connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1661 	if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1662 		connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1663 	if (hdev->bus != BUS_USB)
1664 		connect_mask &= ~HID_CONNECT_HIDDEV;
1665 	if (hid_hiddev(hdev))
1666 		connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1667 
1668 	if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1669 				connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1670 		hdev->claimed |= HID_CLAIMED_INPUT;
1671 
1672 	if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1673 			!hdev->hiddev_connect(hdev,
1674 				connect_mask & HID_CONNECT_HIDDEV_FORCE))
1675 		hdev->claimed |= HID_CLAIMED_HIDDEV;
1676 	if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1677 		hdev->claimed |= HID_CLAIMED_HIDRAW;
1678 
1679 	if (connect_mask & HID_CONNECT_DRIVER)
1680 		hdev->claimed |= HID_CLAIMED_DRIVER;
1681 
1682 	/* Drivers with the ->raw_event callback set are not required to connect
1683 	 * to any other listener. */
1684 	if (!hdev->claimed && !hdev->driver->raw_event) {
1685 		hid_err(hdev, "device has no listeners, quitting\n");
1686 		return -ENODEV;
1687 	}
1688 
1689 	if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1690 			(connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1691 		hdev->ff_init(hdev);
1692 
1693 	len = 0;
1694 	if (hdev->claimed & HID_CLAIMED_INPUT)
1695 		len += sprintf(buf + len, "input");
1696 	if (hdev->claimed & HID_CLAIMED_HIDDEV)
1697 		len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1698 				hdev->minor);
1699 	if (hdev->claimed & HID_CLAIMED_HIDRAW)
1700 		len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1701 				((struct hidraw *)hdev->hidraw)->minor);
1702 
1703 	type = "Device";
1704 	for (i = 0; i < hdev->maxcollection; i++) {
1705 		struct hid_collection *col = &hdev->collection[i];
1706 		if (col->type == HID_COLLECTION_APPLICATION &&
1707 		   (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1708 		   (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1709 			type = types[col->usage & 0xffff];
1710 			break;
1711 		}
1712 	}
1713 
1714 	switch (hdev->bus) {
1715 	case BUS_USB:
1716 		bus = "USB";
1717 		break;
1718 	case BUS_BLUETOOTH:
1719 		bus = "BLUETOOTH";
1720 		break;
1721 	case BUS_I2C:
1722 		bus = "I2C";
1723 		break;
1724 	default:
1725 		bus = "<UNKNOWN>";
1726 	}
1727 
1728 	ret = device_create_file(&hdev->dev, &dev_attr_country);
1729 	if (ret)
1730 		hid_warn(hdev,
1731 			 "can't create sysfs country code attribute err: %d\n", ret);
1732 
1733 	hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1734 		 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1735 		 type, hdev->name, hdev->phys);
1736 
1737 	return 0;
1738 }
1739 EXPORT_SYMBOL_GPL(hid_connect);
1740 
1741 void hid_disconnect(struct hid_device *hdev)
1742 {
1743 	device_remove_file(&hdev->dev, &dev_attr_country);
1744 	if (hdev->claimed & HID_CLAIMED_INPUT)
1745 		hidinput_disconnect(hdev);
1746 	if (hdev->claimed & HID_CLAIMED_HIDDEV)
1747 		hdev->hiddev_disconnect(hdev);
1748 	if (hdev->claimed & HID_CLAIMED_HIDRAW)
1749 		hidraw_disconnect(hdev);
1750 	hdev->claimed = 0;
1751 }
1752 EXPORT_SYMBOL_GPL(hid_disconnect);
1753 
1754 /*
1755  * A list of devices for which there is a specialized driver on HID bus.
1756  *
1757  * Please note that for multitouch devices (driven by hid-multitouch driver),
1758  * there is a proper autodetection and autoloading in place (based on presence
1759  * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1760  * as we are doing the right thing in hid_scan_usage().
1761  *
1762  * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1763  * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1764  * used as a driver. See hid_scan_report().
1765  */
1766 static const struct hid_device_id hid_have_special_driver[] = {
1767 	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1768 	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1769 	{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1770 	{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1771 	{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
1772 	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, USB_VENDOR_ID_ALPS_JP, HID_DEVICE_ID_ALPS_U1_DUAL) },
1773 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1774 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1775 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1776 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1777 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1778 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1779 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1780 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1781 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1782 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1783 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1784 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1785 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1786 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1787 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1788 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1789 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1790 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1791 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1792 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1793 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1794 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1795 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1796 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1797 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1798 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1799 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1800 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1801 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1802 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1803 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1804 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1805 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1806 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1807 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1808 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1809 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1810 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1811 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1812 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1813 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1814 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1815 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1816 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1817 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1818 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1819 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1820 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1821 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1822 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1823 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1824 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1825 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1826 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1827 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1828 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1829 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1830 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1831 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1832 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1833 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1834 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1835 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1836 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1837 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1838 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1839 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1840 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1841 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1842 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1843 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI) },
1844 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ISO) },
1845 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_JIS) },
1846 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1847 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1848 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1849 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1850 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1851 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS) },
1852 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGIC_KEYBOARD_ANSI) },
1853 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1854 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1855 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD) },
1856 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_TOUCHPAD) },
1857 	{ HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1858 	{ HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1859 	{ HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185BFM, 0x2208) },
1860 	{ HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185PC, 0x5506) },
1861 	{ HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2PC, 0x1850) },
1862 	{ HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2BFM, 0x5500) },
1863 	{ HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1864 	{ HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1865 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1866 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1867 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1868 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1869 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1870 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1871 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
1872 	{ HID_USB_DEVICE(USB_VENDOR_ID_CORSAIR, USB_DEVICE_ID_CORSAIR_K90) },
1873 	{ HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1874 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) },
1875 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1876 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1877 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1878 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1879 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1880 	{ HID_USB_DEVICE(USB_VENDOR_ID_DELCOM, USB_DEVICE_ID_DELCOM_VISUAL_IND) },
1881 	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1882 	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1883 #if IS_ENABLED(CONFIG_HID_MAYFLASH)
1884 	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_PS3) },
1885 	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_DOLPHINBAR) },
1886 	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE1) },
1887 	{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_GAMECUBE2) },
1888 #endif
1889 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, USB_DEVICE_ID_DREAM_CHEEKY_WN) },
1890 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, USB_DEVICE_ID_DREAM_CHEEKY_FA) },
1891 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1892 	{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1893 	{ HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1894 	{ HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1895 	{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1896 	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1897 	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1898 	{ HID_USB_DEVICE(USB_VENDOR_ID_GEMBIRD, USB_DEVICE_ID_GEMBIRD_JPD_DUALFORCE2) },
1899 	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1900 	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1901 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1902 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1903 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1904 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1905 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1906 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1907 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1908 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
1909 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
1910 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
1911 	{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) },
1912 	{ HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_TABLET) },
1913 	{ HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1914 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1915 	{ HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1916 	{ HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1917 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1918 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_MANTICORE) },
1919 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1920 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1921 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1922 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1923 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_V2) },
1924 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1925 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912) },
1926 	{ HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1927 	{ HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1928 #if IS_ENABLED(CONFIG_HID_LENOVO)
1929 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1930 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) },
1931 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) },
1932 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPPRODOCK) },
1933 #endif
1934 	{ HID_USB_DEVICE(USB_VENDOR_ID_LG, USB_DEVICE_ID_LG_MELFAS_MT) },
1935 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1936 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1937 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1938 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1939 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1940 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_T651) },
1941 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1942 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1943 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1944 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1945 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1946 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1947 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DUAL_ACTION) },
1948 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1949 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1950 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1951 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1952 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G29_WHEEL) },
1953 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G920_WHEEL) },
1954 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1955 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1956 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1957 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1958 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1959 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1960 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
1961 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1962 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1963 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1964 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1965 #if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1966 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1967 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1968 #endif
1969 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1970 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1971 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1972 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1973 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1974 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1975 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_LUXAFOR) },
1976 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1977 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_KEYBOARD) },
1978 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1979 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1980 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1981 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE7K) },
1982 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1983 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1984 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1985 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1986 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
1987 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_7K) },
1988 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_600) },
1989 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3KV1) },
1990 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_POWER_COVER) },
1991 	{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1992 	{ HID_USB_DEVICE(USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL) },
1993 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1994 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1995 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1996 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1997 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1998 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1999 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
2000 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
2001 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
2002 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
2003 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
2004 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
2005 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
2006 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
2007 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
2008 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
2009 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
2010 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
2011 	{ HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
2012 	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
2013 	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
2014 	{ HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
2015 	{ HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
2016 	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS, HID_ANY_ID) },
2017 	{ HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
2018 	{ HID_USB_DEVICE(USB_VENDOR_ID_RISO_KAGAKU, USB_DEVICE_ID_RI_KA_WEBMAIL) },
2019 #if IS_ENABLED(CONFIG_HID_ROCCAT)
2020 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
2021 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
2022 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
2023 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
2024 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
2025 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
2026 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
2027 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
2028 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
2029 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
2030 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
2031 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
2032 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
2033 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
2034 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
2035 	{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
2036 #endif
2037 #if IS_ENABLED(CONFIG_HID_SAITEK)
2038 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
2039 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7_OLD) },
2040 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7) },
2041 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT9) },
2042 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_MMO7) },
2043 	{ HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_RAT5) },
2044 	{ HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_RAT9) },
2045 #endif
2046 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
2047 	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
2048 	{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
2049 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SMK, USB_DEVICE_ID_SMK_PS3_BDREMOTE) },
2050 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
2051 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
2052 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_MOTION_CONTROLLER) },
2053 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_MOTION_CONTROLLER) },
2054 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
2055 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
2056 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
2057 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
2058 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
2059 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
2060 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
2061 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_2) },
2062 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_2) },
2063 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER_DONGLE) },
2064 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
2065 	{ HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
2066 	{ HID_USB_DEVICE(USB_VENDOR_ID_SINO_LITE, USB_DEVICE_ID_SINO_LITE_CONTROLLER) },
2067 	{ HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
2068 	{ HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
2069 	{ HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
2070 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
2071 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
2072 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
2073 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
2074 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
2075 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
2076 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
2077 	{ HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
2078 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
2079 	{ HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
2080 	{ HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_PRO) },
2081 	{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
2082 	{ HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
2083 	{ HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
2084 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
2085 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
2086 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
2087 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
2088 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
2089 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
2090 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
2091 	{ HID_USB_DEVICE(USB_VENDOR_ID_THQ, USB_DEVICE_ID_THQ_PS3_UDRAW) },
2092 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_YIYNOVA_TABLET) },
2093 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UGEE_TABLET_81) },
2094 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UGEE_TABLET_45) },
2095 	{ HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_DRAWIMAGE_G3) },
2096 	{ HID_USB_DEVICE(USB_VENDOR_ID_UGTIZER, USB_DEVICE_ID_UGTIZER_TABLET_GP0610) },
2097 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
2098 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
2099 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
2100 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
2101 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
2102 	{ HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
2103 	{ HID_USB_DEVICE(USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII) },
2104 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
2105 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
2106 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
2107 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
2108 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
2109 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
2110 	{ HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
2111 	{ HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
2112 	{ HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
2113 	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
2114 	{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
2115 	{ HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
2116 
2117 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
2118 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
2119 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
2120 	{ HID_USB_DEVICE(USB_VENDOR_ID_RAZER, USB_DEVICE_ID_RAZER_BLADE_14) },
2121 	{ HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM6533) },
2122 	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_COVER) },
2123 	{ }
2124 };
2125 
2126 struct hid_dynid {
2127 	struct list_head list;
2128 	struct hid_device_id id;
2129 };
2130 
2131 /**
2132  * store_new_id - add a new HID device ID to this driver and re-probe devices
2133  * @driver: target device driver
2134  * @buf: buffer for scanning device ID data
2135  * @count: input size
2136  *
2137  * Adds a new dynamic hid device ID to this driver,
2138  * and causes the driver to probe for all devices again.
2139  */
2140 static ssize_t store_new_id(struct device_driver *drv, const char *buf,
2141 		size_t count)
2142 {
2143 	struct hid_driver *hdrv = to_hid_driver(drv);
2144 	struct hid_dynid *dynid;
2145 	__u32 bus, vendor, product;
2146 	unsigned long driver_data = 0;
2147 	int ret;
2148 
2149 	ret = sscanf(buf, "%x %x %x %lx",
2150 			&bus, &vendor, &product, &driver_data);
2151 	if (ret < 3)
2152 		return -EINVAL;
2153 
2154 	dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
2155 	if (!dynid)
2156 		return -ENOMEM;
2157 
2158 	dynid->id.bus = bus;
2159 	dynid->id.group = HID_GROUP_ANY;
2160 	dynid->id.vendor = vendor;
2161 	dynid->id.product = product;
2162 	dynid->id.driver_data = driver_data;
2163 
2164 	spin_lock(&hdrv->dyn_lock);
2165 	list_add_tail(&dynid->list, &hdrv->dyn_list);
2166 	spin_unlock(&hdrv->dyn_lock);
2167 
2168 	ret = driver_attach(&hdrv->driver);
2169 
2170 	return ret ? : count;
2171 }
2172 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
2173 
2174 static void hid_free_dynids(struct hid_driver *hdrv)
2175 {
2176 	struct hid_dynid *dynid, *n;
2177 
2178 	spin_lock(&hdrv->dyn_lock);
2179 	list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
2180 		list_del(&dynid->list);
2181 		kfree(dynid);
2182 	}
2183 	spin_unlock(&hdrv->dyn_lock);
2184 }
2185 
2186 static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
2187 		struct hid_driver *hdrv)
2188 {
2189 	struct hid_dynid *dynid;
2190 
2191 	spin_lock(&hdrv->dyn_lock);
2192 	list_for_each_entry(dynid, &hdrv->dyn_list, list) {
2193 		if (hid_match_one_id(hdev, &dynid->id)) {
2194 			spin_unlock(&hdrv->dyn_lock);
2195 			return &dynid->id;
2196 		}
2197 	}
2198 	spin_unlock(&hdrv->dyn_lock);
2199 
2200 	return hid_match_id(hdev, hdrv->id_table);
2201 }
2202 
2203 static int hid_bus_match(struct device *dev, struct device_driver *drv)
2204 {
2205 	struct hid_driver *hdrv = to_hid_driver(drv);
2206 	struct hid_device *hdev = to_hid_device(dev);
2207 
2208 	return hid_match_device(hdev, hdrv) != NULL;
2209 }
2210 
2211 static int hid_device_probe(struct device *dev)
2212 {
2213 	struct hid_driver *hdrv = to_hid_driver(dev->driver);
2214 	struct hid_device *hdev = to_hid_device(dev);
2215 	const struct hid_device_id *id;
2216 	int ret = 0;
2217 
2218 	if (down_interruptible(&hdev->driver_lock))
2219 		return -EINTR;
2220 	if (down_interruptible(&hdev->driver_input_lock)) {
2221 		ret = -EINTR;
2222 		goto unlock_driver_lock;
2223 	}
2224 	hdev->io_started = false;
2225 
2226 	if (!hdev->driver) {
2227 		id = hid_match_device(hdev, hdrv);
2228 		if (id == NULL) {
2229 			ret = -ENODEV;
2230 			goto unlock;
2231 		}
2232 
2233 		hdev->driver = hdrv;
2234 		if (hdrv->probe) {
2235 			ret = hdrv->probe(hdev, id);
2236 		} else { /* default probe */
2237 			ret = hid_open_report(hdev);
2238 			if (!ret)
2239 				ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
2240 		}
2241 		if (ret) {
2242 			hid_close_report(hdev);
2243 			hdev->driver = NULL;
2244 		}
2245 	}
2246 unlock:
2247 	if (!hdev->io_started)
2248 		up(&hdev->driver_input_lock);
2249 unlock_driver_lock:
2250 	up(&hdev->driver_lock);
2251 	return ret;
2252 }
2253 
2254 static int hid_device_remove(struct device *dev)
2255 {
2256 	struct hid_device *hdev = to_hid_device(dev);
2257 	struct hid_driver *hdrv;
2258 	int ret = 0;
2259 
2260 	if (down_interruptible(&hdev->driver_lock))
2261 		return -EINTR;
2262 	if (down_interruptible(&hdev->driver_input_lock)) {
2263 		ret = -EINTR;
2264 		goto unlock_driver_lock;
2265 	}
2266 	hdev->io_started = false;
2267 
2268 	hdrv = hdev->driver;
2269 	if (hdrv) {
2270 		if (hdrv->remove)
2271 			hdrv->remove(hdev);
2272 		else /* default remove */
2273 			hid_hw_stop(hdev);
2274 		hid_close_report(hdev);
2275 		hdev->driver = NULL;
2276 	}
2277 
2278 	if (!hdev->io_started)
2279 		up(&hdev->driver_input_lock);
2280 unlock_driver_lock:
2281 	up(&hdev->driver_lock);
2282 	return ret;
2283 }
2284 
2285 static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2286 			     char *buf)
2287 {
2288 	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2289 
2290 	return scnprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2291 			 hdev->bus, hdev->group, hdev->vendor, hdev->product);
2292 }
2293 static DEVICE_ATTR_RO(modalias);
2294 
2295 static struct attribute *hid_dev_attrs[] = {
2296 	&dev_attr_modalias.attr,
2297 	NULL,
2298 };
2299 static struct bin_attribute *hid_dev_bin_attrs[] = {
2300 	&dev_bin_attr_report_desc,
2301 	NULL
2302 };
2303 static const struct attribute_group hid_dev_group = {
2304 	.attrs = hid_dev_attrs,
2305 	.bin_attrs = hid_dev_bin_attrs,
2306 };
2307 __ATTRIBUTE_GROUPS(hid_dev);
2308 
2309 static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2310 {
2311 	struct hid_device *hdev = to_hid_device(dev);
2312 
2313 	if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2314 			hdev->bus, hdev->vendor, hdev->product))
2315 		return -ENOMEM;
2316 
2317 	if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2318 		return -ENOMEM;
2319 
2320 	if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2321 		return -ENOMEM;
2322 
2323 	if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2324 		return -ENOMEM;
2325 
2326 	if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2327 			   hdev->bus, hdev->group, hdev->vendor, hdev->product))
2328 		return -ENOMEM;
2329 
2330 	return 0;
2331 }
2332 
2333 static struct bus_type hid_bus_type = {
2334 	.name		= "hid",
2335 	.dev_groups	= hid_dev_groups,
2336 	.match		= hid_bus_match,
2337 	.probe		= hid_device_probe,
2338 	.remove		= hid_device_remove,
2339 	.uevent		= hid_uevent,
2340 };
2341 
2342 /* a list of devices that shouldn't be handled by HID core at all */
2343 static const struct hid_device_id hid_ignore_list[] = {
2344 	{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2345 	{ HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2346 	{ HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2347 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2348 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2349 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2350 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2351 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2352 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2353 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2354 	{ HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2355 	{ HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2356 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2357 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2358 	{ HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2359 	{ HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2360 	{ HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2361 	{ HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2362 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2363 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
2364 	{ HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2365 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2366 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2367 	{ HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2368 	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2369 	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2370 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, 0x0400) },
2371 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, 0x0401) },
2372 	{ HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2373 	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2374 	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2375 	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2376 	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2377 	{ HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2378 	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2379 	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2380 	{ HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2381 	{ HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2382 	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2383 	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2384 	{ HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2385 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2386 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2387 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2388 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2389 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2390 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2391 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2392 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2393 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2394 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2395 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2396 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2397 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2398 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2399 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2400 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2401 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2402 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2403 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2404 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2405 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2406 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2407 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2408 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2409 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2410 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2411 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2412 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2413 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2414 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2415 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2416 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2417 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2418 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2419 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2420 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2421 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2422 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2423 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2424 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2425 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2426 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2427 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2428 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2429 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2430 	{ HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2431 	{ HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2432 	{ HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2433 	{ HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2434 	{ HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_GN9350E) },
2435 	{ HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2436 	{ HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2437 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2438 	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2439 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2440 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2441 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2442 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2443 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2444 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2445 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2446 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2447 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2448 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2449 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2450 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2451 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2452 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2453 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2454 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2455 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2456 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2457 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2458 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2459 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2460 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2461 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2462 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2463 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2464 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2465 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2466 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2467 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2468 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2469 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2470 	{ HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2471 	{ HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2472 	{ HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2473 	{ HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2474 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2475 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2476 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICK16F1454) },
2477 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICK16F1454_V2) },
2478 	{ HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2479 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2480 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2481 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2482 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2483 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2484 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2485 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2486 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2487 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2488 	{ HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2489 	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2490 	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2491 	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2492 	{ HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2493 	{ HID_USB_DEVICE(USB_VENDOR_ID_PETZL, USB_DEVICE_ID_PETZL_HEADLAMP) },
2494 	{ HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2495 	{ HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2496 #if IS_ENABLED(CONFIG_MOUSE_SYNAPTICS_USB)
2497 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2498 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2499 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2500 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2501 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2502 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2503 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2504 	{ HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2505 #endif
2506 	{ HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2507 	{ }
2508 };
2509 
2510 /**
2511  * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2512  *
2513  * There are composite devices for which we want to ignore only a certain
2514  * interface. This is a list of devices for which only the mouse interface will
2515  * be ignored. This allows a dedicated driver to take care of the interface.
2516  */
2517 static const struct hid_device_id hid_mouse_ignore_list[] = {
2518 	/* appletouch driver */
2519 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2520 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2521 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2522 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2523 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2524 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2525 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2526 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2527 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2528 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2529 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2530 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2531 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2532 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2533 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2534 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2535 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2536 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2537 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2538 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2539 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2540 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2541 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2542 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2543 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2544 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2545 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2546 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2547 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2548 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2549 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2550 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2551 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2552 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2553 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2554 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2555 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2556 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2557 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2558 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2559 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2560 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2561 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2562 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2563 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2564 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2565 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2566 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2567 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2568 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2569 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI) },
2570 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ISO) },
2571 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_JIS) },
2572 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2573 	{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2574 	{ }
2575 };
2576 
2577 bool hid_ignore(struct hid_device *hdev)
2578 {
2579 	if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2580 		return false;
2581 	if (hdev->quirks & HID_QUIRK_IGNORE)
2582 		return true;
2583 
2584 	switch (hdev->vendor) {
2585 	case USB_VENDOR_ID_CODEMERCS:
2586 		/* ignore all Code Mercenaries IOWarrior devices */
2587 		if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2588 				hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2589 			return true;
2590 		break;
2591 	case USB_VENDOR_ID_LOGITECH:
2592 		if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2593 				hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2594 			return true;
2595 		/*
2596 		 * The Keene FM transmitter USB device has the same USB ID as
2597 		 * the Logitech AudioHub Speaker, but it should ignore the hid.
2598 		 * Check if the name is that of the Keene device.
2599 		 * For reference: the name of the AudioHub is
2600 		 * "HOLTEK  AudioHub Speaker".
2601 		 */
2602 		if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2603 			!strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2604 				return true;
2605 		break;
2606 	case USB_VENDOR_ID_SOUNDGRAPH:
2607 		if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2608 		    hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2609 			return true;
2610 		break;
2611 	case USB_VENDOR_ID_HANWANG:
2612 		if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2613 		    hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2614 			return true;
2615 		break;
2616 	case USB_VENDOR_ID_JESS:
2617 		if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2618 				hdev->type == HID_TYPE_USBNONE)
2619 			return true;
2620 		break;
2621 	case USB_VENDOR_ID_VELLEMAN:
2622 		/* These are not HID devices.  They are handled by comedi. */
2623 		if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2624 		     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2625 		    (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2626 		     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2627 			return true;
2628 		break;
2629 	case USB_VENDOR_ID_ATMEL_V_USB:
2630 		/* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2631 		 * it has the same USB ID as many Atmel V-USB devices. This
2632 		 * usb radio is handled by radio-ma901.c driver so we want
2633 		 * ignore the hid. Check the name, bus, product and ignore
2634 		 * if we have MA901 usb radio.
2635 		 */
2636 		if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2637 			hdev->bus == BUS_USB &&
2638 			strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2639 			return true;
2640 		break;
2641 	}
2642 
2643 	if (hdev->type == HID_TYPE_USBMOUSE &&
2644 			hid_match_id(hdev, hid_mouse_ignore_list))
2645 		return true;
2646 
2647 	return !!hid_match_id(hdev, hid_ignore_list);
2648 }
2649 EXPORT_SYMBOL_GPL(hid_ignore);
2650 
2651 int hid_add_device(struct hid_device *hdev)
2652 {
2653 	static atomic_t id = ATOMIC_INIT(0);
2654 	int ret;
2655 
2656 	if (WARN_ON(hdev->status & HID_STAT_ADDED))
2657 		return -EBUSY;
2658 
2659 	/* we need to kill them here, otherwise they will stay allocated to
2660 	 * wait for coming driver */
2661 	if (hid_ignore(hdev))
2662 		return -ENODEV;
2663 
2664 	/*
2665 	 * Check for the mandatory transport channel.
2666 	 */
2667 	 if (!hdev->ll_driver->raw_request) {
2668 		hid_err(hdev, "transport driver missing .raw_request()\n");
2669 		return -EINVAL;
2670 	 }
2671 
2672 	/*
2673 	 * Read the device report descriptor once and use as template
2674 	 * for the driver-specific modifications.
2675 	 */
2676 	ret = hdev->ll_driver->parse(hdev);
2677 	if (ret)
2678 		return ret;
2679 	if (!hdev->dev_rdesc)
2680 		return -ENODEV;
2681 
2682 	/*
2683 	 * Scan generic devices for group information
2684 	 */
2685 	if (hid_ignore_special_drivers) {
2686 		hdev->group = HID_GROUP_GENERIC;
2687 	} else if (!hdev->group &&
2688 		   !hid_match_id(hdev, hid_have_special_driver)) {
2689 		ret = hid_scan_report(hdev);
2690 		if (ret)
2691 			hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2692 	}
2693 
2694 	/* XXX hack, any other cleaner solution after the driver core
2695 	 * is converted to allow more than 20 bytes as the device name? */
2696 	dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2697 		     hdev->vendor, hdev->product, atomic_inc_return(&id));
2698 
2699 	hid_debug_register(hdev, dev_name(&hdev->dev));
2700 	ret = device_add(&hdev->dev);
2701 	if (!ret)
2702 		hdev->status |= HID_STAT_ADDED;
2703 	else
2704 		hid_debug_unregister(hdev);
2705 
2706 	return ret;
2707 }
2708 EXPORT_SYMBOL_GPL(hid_add_device);
2709 
2710 /**
2711  * hid_allocate_device - allocate new hid device descriptor
2712  *
2713  * Allocate and initialize hid device, so that hid_destroy_device might be
2714  * used to free it.
2715  *
2716  * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2717  * error value.
2718  */
2719 struct hid_device *hid_allocate_device(void)
2720 {
2721 	struct hid_device *hdev;
2722 	int ret = -ENOMEM;
2723 
2724 	hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2725 	if (hdev == NULL)
2726 		return ERR_PTR(ret);
2727 
2728 	device_initialize(&hdev->dev);
2729 	hdev->dev.release = hid_device_release;
2730 	hdev->dev.bus = &hid_bus_type;
2731 	device_enable_async_suspend(&hdev->dev);
2732 
2733 	hid_close_report(hdev);
2734 
2735 	init_waitqueue_head(&hdev->debug_wait);
2736 	INIT_LIST_HEAD(&hdev->debug_list);
2737 	spin_lock_init(&hdev->debug_list_lock);
2738 	sema_init(&hdev->driver_lock, 1);
2739 	sema_init(&hdev->driver_input_lock, 1);
2740 
2741 	return hdev;
2742 }
2743 EXPORT_SYMBOL_GPL(hid_allocate_device);
2744 
2745 static void hid_remove_device(struct hid_device *hdev)
2746 {
2747 	if (hdev->status & HID_STAT_ADDED) {
2748 		device_del(&hdev->dev);
2749 		hid_debug_unregister(hdev);
2750 		hdev->status &= ~HID_STAT_ADDED;
2751 	}
2752 	kfree(hdev->dev_rdesc);
2753 	hdev->dev_rdesc = NULL;
2754 	hdev->dev_rsize = 0;
2755 }
2756 
2757 /**
2758  * hid_destroy_device - free previously allocated device
2759  *
2760  * @hdev: hid device
2761  *
2762  * If you allocate hid_device through hid_allocate_device, you should ever
2763  * free by this function.
2764  */
2765 void hid_destroy_device(struct hid_device *hdev)
2766 {
2767 	hid_remove_device(hdev);
2768 	put_device(&hdev->dev);
2769 }
2770 EXPORT_SYMBOL_GPL(hid_destroy_device);
2771 
2772 int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2773 		const char *mod_name)
2774 {
2775 	int ret;
2776 
2777 	hdrv->driver.name = hdrv->name;
2778 	hdrv->driver.bus = &hid_bus_type;
2779 	hdrv->driver.owner = owner;
2780 	hdrv->driver.mod_name = mod_name;
2781 
2782 	INIT_LIST_HEAD(&hdrv->dyn_list);
2783 	spin_lock_init(&hdrv->dyn_lock);
2784 
2785 	ret = driver_register(&hdrv->driver);
2786 	if (ret)
2787 		return ret;
2788 
2789 	ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2790 	if (ret)
2791 		driver_unregister(&hdrv->driver);
2792 
2793 	return ret;
2794 }
2795 EXPORT_SYMBOL_GPL(__hid_register_driver);
2796 
2797 void hid_unregister_driver(struct hid_driver *hdrv)
2798 {
2799 	driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2800 	driver_unregister(&hdrv->driver);
2801 	hid_free_dynids(hdrv);
2802 }
2803 EXPORT_SYMBOL_GPL(hid_unregister_driver);
2804 
2805 int hid_check_keys_pressed(struct hid_device *hid)
2806 {
2807 	struct hid_input *hidinput;
2808 	int i;
2809 
2810 	if (!(hid->claimed & HID_CLAIMED_INPUT))
2811 		return 0;
2812 
2813 	list_for_each_entry(hidinput, &hid->inputs, list) {
2814 		for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2815 			if (hidinput->input->key[i])
2816 				return 1;
2817 	}
2818 
2819 	return 0;
2820 }
2821 
2822 EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2823 
2824 static int __init hid_init(void)
2825 {
2826 	int ret;
2827 
2828 	if (hid_debug)
2829 		pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2830 			"debugfs is now used for inspecting the device (report descriptor, reports)\n");
2831 
2832 	ret = bus_register(&hid_bus_type);
2833 	if (ret) {
2834 		pr_err("can't register hid bus\n");
2835 		goto err;
2836 	}
2837 
2838 	ret = hidraw_init();
2839 	if (ret)
2840 		goto err_bus;
2841 
2842 	hid_debug_init();
2843 
2844 	return 0;
2845 err_bus:
2846 	bus_unregister(&hid_bus_type);
2847 err:
2848 	return ret;
2849 }
2850 
2851 static void __exit hid_exit(void)
2852 {
2853 	hid_debug_exit();
2854 	hidraw_exit();
2855 	bus_unregister(&hid_bus_type);
2856 }
2857 
2858 module_init(hid_init);
2859 module_exit(hid_exit);
2860 
2861 MODULE_AUTHOR("Andreas Gal");
2862 MODULE_AUTHOR("Vojtech Pavlik");
2863 MODULE_AUTHOR("Jiri Kosina");
2864 MODULE_LICENSE("GPL");
2865 
2866