linux/drivers/hid/hid-core.c
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   1/*
   2 *  HID support for Linux
   3 *
   4 *  Copyright (c) 1999 Andreas Gal
   5 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   6 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   7 *  Copyright (c) 2006-2012 Jiri Kosina
   8 */
   9
  10/*
  11 * This program is free software; you can redistribute it and/or modify it
  12 * under the terms of the GNU General Public License as published by the Free
  13 * Software Foundation; either version 2 of the License, or (at your option)
  14 * any later version.
  15 */
  16
  17#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  18
  19#include <linux/module.h>
  20#include <linux/slab.h>
  21#include <linux/init.h>
  22#include <linux/kernel.h>
  23#include <linux/list.h>
  24#include <linux/mm.h>
  25#include <linux/spinlock.h>
  26#include <asm/unaligned.h>
  27#include <asm/byteorder.h>
  28#include <linux/input.h>
  29#include <linux/wait.h>
  30#include <linux/vmalloc.h>
  31#include <linux/sched.h>
  32#include <linux/semaphore.h>
  33
  34#include <linux/hid.h>
  35#include <linux/hiddev.h>
  36#include <linux/hid-debug.h>
  37#include <linux/hidraw.h>
  38
  39#include "hid-ids.h"
  40
  41/*
  42 * Version Information
  43 */
  44
  45#define DRIVER_DESC "HID core driver"
  46#define DRIVER_LICENSE "GPL"
  47
  48int hid_debug = 0;
  49module_param_named(debug, hid_debug, int, 0600);
  50MODULE_PARM_DESC(debug, "toggle HID debugging messages");
  51EXPORT_SYMBOL_GPL(hid_debug);
  52
  53static int hid_ignore_special_drivers = 0;
  54module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
  55MODULE_PARM_DESC(debug, "Ignore any special drivers and handle all devices by generic driver");
  56
  57/*
  58 * Register a new report for a device.
  59 */
  60
  61struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
  62{
  63        struct hid_report_enum *report_enum = device->report_enum + type;
  64        struct hid_report *report;
  65
  66        if (id >= HID_MAX_IDS)
  67                return NULL;
  68        if (report_enum->report_id_hash[id])
  69                return report_enum->report_id_hash[id];
  70
  71        report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
  72        if (!report)
  73                return NULL;
  74
  75        if (id != 0)
  76                report_enum->numbered = 1;
  77
  78        report->id = id;
  79        report->type = type;
  80        report->size = 0;
  81        report->device = device;
  82        report_enum->report_id_hash[id] = report;
  83
  84        list_add_tail(&report->list, &report_enum->report_list);
  85
  86        return report;
  87}
  88EXPORT_SYMBOL_GPL(hid_register_report);
  89
  90/*
  91 * Register a new field for this report.
  92 */
  93
  94static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
  95{
  96        struct hid_field *field;
  97
  98        if (report->maxfield == HID_MAX_FIELDS) {
  99                hid_err(report->device, "too many fields in report\n");
 100                return NULL;
 101        }
 102
 103        field = kzalloc((sizeof(struct hid_field) +
 104                         usages * sizeof(struct hid_usage) +
 105                         values * sizeof(unsigned)), GFP_KERNEL);
 106        if (!field)
 107                return NULL;
 108
 109        field->index = report->maxfield++;
 110        report->field[field->index] = field;
 111        field->usage = (struct hid_usage *)(field + 1);
 112        field->value = (s32 *)(field->usage + usages);
 113        field->report = report;
 114
 115        return field;
 116}
 117
 118/*
 119 * Open a collection. The type/usage is pushed on the stack.
 120 */
 121
 122static int open_collection(struct hid_parser *parser, unsigned type)
 123{
 124        struct hid_collection *collection;
 125        unsigned usage;
 126
 127        usage = parser->local.usage[0];
 128
 129        if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
 130                hid_err(parser->device, "collection stack overflow\n");
 131                return -EINVAL;
 132        }
 133
 134        if (parser->device->maxcollection == parser->device->collection_size) {
 135                collection = kmalloc(sizeof(struct hid_collection) *
 136                                parser->device->collection_size * 2, GFP_KERNEL);
 137                if (collection == NULL) {
 138                        hid_err(parser->device, "failed to reallocate collection array\n");
 139                        return -ENOMEM;
 140                }
 141                memcpy(collection, parser->device->collection,
 142                        sizeof(struct hid_collection) *
 143                        parser->device->collection_size);
 144                memset(collection + parser->device->collection_size, 0,
 145                        sizeof(struct hid_collection) *
 146                        parser->device->collection_size);
 147                kfree(parser->device->collection);
 148                parser->device->collection = collection;
 149                parser->device->collection_size *= 2;
 150        }
 151
 152        parser->collection_stack[parser->collection_stack_ptr++] =
 153                parser->device->maxcollection;
 154
 155        collection = parser->device->collection +
 156                parser->device->maxcollection++;
 157        collection->type = type;
 158        collection->usage = usage;
 159        collection->level = parser->collection_stack_ptr - 1;
 160
 161        if (type == HID_COLLECTION_APPLICATION)
 162                parser->device->maxapplication++;
 163
 164        return 0;
 165}
 166
 167/*
 168 * Close a collection.
 169 */
 170
 171static int close_collection(struct hid_parser *parser)
 172{
 173        if (!parser->collection_stack_ptr) {
 174                hid_err(parser->device, "collection stack underflow\n");
 175                return -EINVAL;
 176        }
 177        parser->collection_stack_ptr--;
 178        return 0;
 179}
 180
 181/*
 182 * Climb up the stack, search for the specified collection type
 183 * and return the usage.
 184 */
 185
 186static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
 187{
 188        struct hid_collection *collection = parser->device->collection;
 189        int n;
 190
 191        for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
 192                unsigned index = parser->collection_stack[n];
 193                if (collection[index].type == type)
 194                        return collection[index].usage;
 195        }
 196        return 0; /* we know nothing about this usage type */
 197}
 198
 199/*
 200 * Add a usage to the temporary parser table.
 201 */
 202
 203static int hid_add_usage(struct hid_parser *parser, unsigned usage)
 204{
 205        if (parser->local.usage_index >= HID_MAX_USAGES) {
 206                hid_err(parser->device, "usage index exceeded\n");
 207                return -1;
 208        }
 209        parser->local.usage[parser->local.usage_index] = usage;
 210        parser->local.collection_index[parser->local.usage_index] =
 211                parser->collection_stack_ptr ?
 212                parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
 213        parser->local.usage_index++;
 214        return 0;
 215}
 216
 217/*
 218 * Register a new field for this report.
 219 */
 220
 221static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
 222{
 223        struct hid_report *report;
 224        struct hid_field *field;
 225        unsigned usages;
 226        unsigned offset;
 227        unsigned i;
 228
 229        report = hid_register_report(parser->device, report_type, parser->global.report_id);
 230        if (!report) {
 231                hid_err(parser->device, "hid_register_report failed\n");
 232                return -1;
 233        }
 234
 235        /* Handle both signed and unsigned cases properly */
 236        if ((parser->global.logical_minimum < 0 &&
 237                parser->global.logical_maximum <
 238                parser->global.logical_minimum) ||
 239                (parser->global.logical_minimum >= 0 &&
 240                (__u32)parser->global.logical_maximum <
 241                (__u32)parser->global.logical_minimum)) {
 242                dbg_hid("logical range invalid 0x%x 0x%x\n",
 243                        parser->global.logical_minimum,
 244                        parser->global.logical_maximum);
 245                return -1;
 246        }
 247
 248        offset = report->size;
 249        report->size += parser->global.report_size * parser->global.report_count;
 250
 251        if (!parser->local.usage_index) /* Ignore padding fields */
 252                return 0;
 253
 254        usages = max_t(unsigned, parser->local.usage_index,
 255                                 parser->global.report_count);
 256
 257        field = hid_register_field(report, usages, parser->global.report_count);
 258        if (!field)
 259                return 0;
 260
 261        field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
 262        field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
 263        field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
 264
 265        for (i = 0; i < usages; i++) {
 266                unsigned j = i;
 267                /* Duplicate the last usage we parsed if we have excess values */
 268                if (i >= parser->local.usage_index)
 269                        j = parser->local.usage_index - 1;
 270                field->usage[i].hid = parser->local.usage[j];
 271                field->usage[i].collection_index =
 272                        parser->local.collection_index[j];
 273                field->usage[i].usage_index = i;
 274        }
 275
 276        field->maxusage = usages;
 277        field->flags = flags;
 278        field->report_offset = offset;
 279        field->report_type = report_type;
 280        field->report_size = parser->global.report_size;
 281        field->report_count = parser->global.report_count;
 282        field->logical_minimum = parser->global.logical_minimum;
 283        field->logical_maximum = parser->global.logical_maximum;
 284        field->physical_minimum = parser->global.physical_minimum;
 285        field->physical_maximum = parser->global.physical_maximum;
 286        field->unit_exponent = parser->global.unit_exponent;
 287        field->unit = parser->global.unit;
 288
 289        return 0;
 290}
 291
 292/*
 293 * Read data value from item.
 294 */
 295
 296static u32 item_udata(struct hid_item *item)
 297{
 298        switch (item->size) {
 299        case 1: return item->data.u8;
 300        case 2: return item->data.u16;
 301        case 4: return item->data.u32;
 302        }
 303        return 0;
 304}
 305
 306static s32 item_sdata(struct hid_item *item)
 307{
 308        switch (item->size) {
 309        case 1: return item->data.s8;
 310        case 2: return item->data.s16;
 311        case 4: return item->data.s32;
 312        }
 313        return 0;
 314}
 315
 316/*
 317 * Process a global item.
 318 */
 319
 320static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
 321{
 322        __s32 raw_value;
 323        switch (item->tag) {
 324        case HID_GLOBAL_ITEM_TAG_PUSH:
 325
 326                if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
 327                        hid_err(parser->device, "global environment stack overflow\n");
 328                        return -1;
 329                }
 330
 331                memcpy(parser->global_stack + parser->global_stack_ptr++,
 332                        &parser->global, sizeof(struct hid_global));
 333                return 0;
 334
 335        case HID_GLOBAL_ITEM_TAG_POP:
 336
 337                if (!parser->global_stack_ptr) {
 338                        hid_err(parser->device, "global environment stack underflow\n");
 339                        return -1;
 340                }
 341
 342                memcpy(&parser->global, parser->global_stack +
 343                        --parser->global_stack_ptr, sizeof(struct hid_global));
 344                return 0;
 345
 346        case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
 347                parser->global.usage_page = item_udata(item);
 348                return 0;
 349
 350        case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
 351                parser->global.logical_minimum = item_sdata(item);
 352                return 0;
 353
 354        case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
 355                if (parser->global.logical_minimum < 0)
 356                        parser->global.logical_maximum = item_sdata(item);
 357                else
 358                        parser->global.logical_maximum = item_udata(item);
 359                return 0;
 360
 361        case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
 362                parser->global.physical_minimum = item_sdata(item);
 363                return 0;
 364
 365        case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
 366                if (parser->global.physical_minimum < 0)
 367                        parser->global.physical_maximum = item_sdata(item);
 368                else
 369                        parser->global.physical_maximum = item_udata(item);
 370                return 0;
 371
 372        case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
 373                /* Many devices provide unit exponent as a two's complement
 374                 * nibble due to the common misunderstanding of HID
 375                 * specification 1.11, 6.2.2.7 Global Items. Attempt to handle
 376                 * both this and the standard encoding. */
 377                raw_value = item_sdata(item);
 378                if (!(raw_value & 0xfffffff0))
 379                        parser->global.unit_exponent = hid_snto32(raw_value, 4);
 380                else
 381                        parser->global.unit_exponent = raw_value;
 382                return 0;
 383
 384        case HID_GLOBAL_ITEM_TAG_UNIT:
 385                parser->global.unit = item_udata(item);
 386                return 0;
 387
 388        case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
 389                parser->global.report_size = item_udata(item);
 390                if (parser->global.report_size > 128) {
 391                        hid_err(parser->device, "invalid report_size %d\n",
 392                                        parser->global.report_size);
 393                        return -1;
 394                }
 395                return 0;
 396
 397        case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
 398                parser->global.report_count = item_udata(item);
 399                if (parser->global.report_count > HID_MAX_USAGES) {
 400                        hid_err(parser->device, "invalid report_count %d\n",
 401                                        parser->global.report_count);
 402                        return -1;
 403                }
 404                return 0;
 405
 406        case HID_GLOBAL_ITEM_TAG_REPORT_ID:
 407                parser->global.report_id = item_udata(item);
 408                if (parser->global.report_id == 0 ||
 409                    parser->global.report_id >= HID_MAX_IDS) {
 410                        hid_err(parser->device, "report_id %u is invalid\n",
 411                                parser->global.report_id);
 412                        return -1;
 413                }
 414                return 0;
 415
 416        default:
 417                hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
 418                return -1;
 419        }
 420}
 421
 422/*
 423 * Process a local item.
 424 */
 425
 426static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 427{
 428        __u32 data;
 429        unsigned n;
 430
 431        data = item_udata(item);
 432
 433        switch (item->tag) {
 434        case HID_LOCAL_ITEM_TAG_DELIMITER:
 435
 436                if (data) {
 437                        /*
 438                         * We treat items before the first delimiter
 439                         * as global to all usage sets (branch 0).
 440                         * In the moment we process only these global
 441                         * items and the first delimiter set.
 442                         */
 443                        if (parser->local.delimiter_depth != 0) {
 444                                hid_err(parser->device, "nested delimiters\n");
 445                                return -1;
 446                        }
 447                        parser->local.delimiter_depth++;
 448                        parser->local.delimiter_branch++;
 449                } else {
 450                        if (parser->local.delimiter_depth < 1) {
 451                                hid_err(parser->device, "bogus close delimiter\n");
 452                                return -1;
 453                        }
 454                        parser->local.delimiter_depth--;
 455                }
 456                return 0;
 457
 458        case HID_LOCAL_ITEM_TAG_USAGE:
 459
 460                if (parser->local.delimiter_branch > 1) {
 461                        dbg_hid("alternative usage ignored\n");
 462                        return 0;
 463                }
 464
 465                if (item->size <= 2)
 466                        data = (parser->global.usage_page << 16) + data;
 467
 468                return hid_add_usage(parser, data);
 469
 470        case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
 471
 472                if (parser->local.delimiter_branch > 1) {
 473                        dbg_hid("alternative usage ignored\n");
 474                        return 0;
 475                }
 476
 477                if (item->size <= 2)
 478                        data = (parser->global.usage_page << 16) + data;
 479
 480                parser->local.usage_minimum = data;
 481                return 0;
 482
 483        case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
 484
 485                if (parser->local.delimiter_branch > 1) {
 486                        dbg_hid("alternative usage ignored\n");
 487                        return 0;
 488                }
 489
 490                if (item->size <= 2)
 491                        data = (parser->global.usage_page << 16) + data;
 492
 493                for (n = parser->local.usage_minimum; n <= data; n++)
 494                        if (hid_add_usage(parser, n)) {
 495                                dbg_hid("hid_add_usage failed\n");
 496                                return -1;
 497                        }
 498                return 0;
 499
 500        default:
 501
 502                dbg_hid("unknown local item tag 0x%x\n", item->tag);
 503                return 0;
 504        }
 505        return 0;
 506}
 507
 508/*
 509 * Process a main item.
 510 */
 511
 512static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
 513{
 514        __u32 data;
 515        int ret;
 516
 517        data = item_udata(item);
 518
 519        switch (item->tag) {
 520        case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 521                ret = open_collection(parser, data & 0xff);
 522                break;
 523        case HID_MAIN_ITEM_TAG_END_COLLECTION:
 524                ret = close_collection(parser);
 525                break;
 526        case HID_MAIN_ITEM_TAG_INPUT:
 527                ret = hid_add_field(parser, HID_INPUT_REPORT, data);
 528                break;
 529        case HID_MAIN_ITEM_TAG_OUTPUT:
 530                ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
 531                break;
 532        case HID_MAIN_ITEM_TAG_FEATURE:
 533                ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
 534                break;
 535        default:
 536                hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
 537                ret = 0;
 538        }
 539
 540        memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */
 541
 542        return ret;
 543}
 544
 545/*
 546 * Process a reserved item.
 547 */
 548
 549static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
 550{
 551        dbg_hid("reserved item type, tag 0x%x\n", item->tag);
 552        return 0;
 553}
 554
 555/*
 556 * Free a report and all registered fields. The field->usage and
 557 * field->value table's are allocated behind the field, so we need
 558 * only to free(field) itself.
 559 */
 560
 561static void hid_free_report(struct hid_report *report)
 562{
 563        unsigned n;
 564
 565        for (n = 0; n < report->maxfield; n++)
 566                kfree(report->field[n]);
 567        kfree(report);
 568}
 569
 570/*
 571 * Close report. This function returns the device
 572 * state to the point prior to hid_open_report().
 573 */
 574static void hid_close_report(struct hid_device *device)
 575{
 576        unsigned i, j;
 577
 578        for (i = 0; i < HID_REPORT_TYPES; i++) {
 579                struct hid_report_enum *report_enum = device->report_enum + i;
 580
 581                for (j = 0; j < HID_MAX_IDS; j++) {
 582                        struct hid_report *report = report_enum->report_id_hash[j];
 583                        if (report)
 584                                hid_free_report(report);
 585                }
 586                memset(report_enum, 0, sizeof(*report_enum));
 587                INIT_LIST_HEAD(&report_enum->report_list);
 588        }
 589
 590        kfree(device->rdesc);
 591        device->rdesc = NULL;
 592        device->rsize = 0;
 593
 594        kfree(device->collection);
 595        device->collection = NULL;
 596        device->collection_size = 0;
 597        device->maxcollection = 0;
 598        device->maxapplication = 0;
 599
 600        device->status &= ~HID_STAT_PARSED;
 601}
 602
 603/*
 604 * Free a device structure, all reports, and all fields.
 605 */
 606
 607static void hid_device_release(struct device *dev)
 608{
 609        struct hid_device *hid = container_of(dev, struct hid_device, dev);
 610
 611        hid_close_report(hid);
 612        kfree(hid->dev_rdesc);
 613        kfree(hid);
 614}
 615
 616/*
 617 * Fetch a report description item from the data stream. We support long
 618 * items, though they are not used yet.
 619 */
 620
 621static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
 622{
 623        u8 b;
 624
 625        if ((end - start) <= 0)
 626                return NULL;
 627
 628        b = *start++;
 629
 630        item->type = (b >> 2) & 3;
 631        item->tag  = (b >> 4) & 15;
 632
 633        if (item->tag == HID_ITEM_TAG_LONG) {
 634
 635                item->format = HID_ITEM_FORMAT_LONG;
 636
 637                if ((end - start) < 2)
 638                        return NULL;
 639
 640                item->size = *start++;
 641                item->tag  = *start++;
 642
 643                if ((end - start) < item->size)
 644                        return NULL;
 645
 646                item->data.longdata = start;
 647                start += item->size;
 648                return start;
 649        }
 650
 651        item->format = HID_ITEM_FORMAT_SHORT;
 652        item->size = b & 3;
 653
 654        switch (item->size) {
 655        case 0:
 656                return start;
 657
 658        case 1:
 659                if ((end - start) < 1)
 660                        return NULL;
 661                item->data.u8 = *start++;
 662                return start;
 663
 664        case 2:
 665                if ((end - start) < 2)
 666                        return NULL;
 667                item->data.u16 = get_unaligned_le16(start);
 668                start = (__u8 *)((__le16 *)start + 1);
 669                return start;
 670
 671        case 3:
 672                item->size++;
 673                if ((end - start) < 4)
 674                        return NULL;
 675                item->data.u32 = get_unaligned_le32(start);
 676                start = (__u8 *)((__le32 *)start + 1);
 677                return start;
 678        }
 679
 680        return NULL;
 681}
 682
 683static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
 684{
 685        struct hid_device *hid = parser->device;
 686
 687        if (usage == HID_DG_CONTACTID)
 688                hid->group = HID_GROUP_MULTITOUCH;
 689}
 690
 691static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
 692{
 693        if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
 694            parser->global.report_size == 8)
 695                parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
 696}
 697
 698static void hid_scan_collection(struct hid_parser *parser, unsigned type)
 699{
 700        struct hid_device *hid = parser->device;
 701
 702        if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
 703            type == HID_COLLECTION_PHYSICAL)
 704                hid->group = HID_GROUP_SENSOR_HUB;
 705}
 706
 707static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
 708{
 709        __u32 data;
 710        int i;
 711
 712        data = item_udata(item);
 713
 714        switch (item->tag) {
 715        case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
 716                hid_scan_collection(parser, data & 0xff);
 717                break;
 718        case HID_MAIN_ITEM_TAG_END_COLLECTION:
 719                break;
 720        case HID_MAIN_ITEM_TAG_INPUT:
 721                for (i = 0; i < parser->local.usage_index; i++)
 722                        hid_scan_input_usage(parser, parser->local.usage[i]);
 723                break;
 724        case HID_MAIN_ITEM_TAG_OUTPUT:
 725                break;
 726        case HID_MAIN_ITEM_TAG_FEATURE:
 727                for (i = 0; i < parser->local.usage_index; i++)
 728                        hid_scan_feature_usage(parser, parser->local.usage[i]);
 729                break;
 730        }
 731
 732        /* Reset the local parser environment */
 733        memset(&parser->local, 0, sizeof(parser->local));
 734
 735        return 0;
 736}
 737
 738/*
 739 * Scan a report descriptor before the device is added to the bus.
 740 * Sets device groups and other properties that determine what driver
 741 * to load.
 742 */
 743static int hid_scan_report(struct hid_device *hid)
 744{
 745        struct hid_parser *parser;
 746        struct hid_item item;
 747        __u8 *start = hid->dev_rdesc;
 748        __u8 *end = start + hid->dev_rsize;
 749        static int (*dispatch_type[])(struct hid_parser *parser,
 750                                      struct hid_item *item) = {
 751                hid_scan_main,
 752                hid_parser_global,
 753                hid_parser_local,
 754                hid_parser_reserved
 755        };
 756
 757        parser = vzalloc(sizeof(struct hid_parser));
 758        if (!parser)
 759                return -ENOMEM;
 760
 761        parser->device = hid;
 762        hid->group = HID_GROUP_GENERIC;
 763
 764        /*
 765         * The parsing is simpler than the one in hid_open_report() as we should
 766         * be robust against hid errors. Those errors will be raised by
 767         * hid_open_report() anyway.
 768         */
 769        while ((start = fetch_item(start, end, &item)) != NULL)
 770                dispatch_type[item.type](parser, &item);
 771
 772        /*
 773         * Handle special flags set during scanning.
 774         */
 775        if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
 776            (hid->group == HID_GROUP_MULTITOUCH))
 777                hid->group = HID_GROUP_MULTITOUCH_WIN_8;
 778
 779        vfree(parser);
 780        return 0;
 781}
 782
 783/**
 784 * hid_parse_report - parse device report
 785 *
 786 * @device: hid device
 787 * @start: report start
 788 * @size: report size
 789 *
 790 * Allocate the device report as read by the bus driver. This function should
 791 * only be called from parse() in ll drivers.
 792 */
 793int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
 794{
 795        hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
 796        if (!hid->dev_rdesc)
 797                return -ENOMEM;
 798        hid->dev_rsize = size;
 799        return 0;
 800}
 801EXPORT_SYMBOL_GPL(hid_parse_report);
 802
 803static const char * const hid_report_names[] = {
 804        "HID_INPUT_REPORT",
 805        "HID_OUTPUT_REPORT",
 806        "HID_FEATURE_REPORT",
 807};
 808/**
 809 * hid_validate_values - validate existing device report's value indexes
 810 *
 811 * @device: hid device
 812 * @type: which report type to examine
 813 * @id: which report ID to examine (0 for first)
 814 * @field_index: which report field to examine
 815 * @report_counts: expected number of values
 816 *
 817 * Validate the number of values in a given field of a given report, after
 818 * parsing.
 819 */
 820struct hid_report *hid_validate_values(struct hid_device *hid,
 821                                       unsigned int type, unsigned int id,
 822                                       unsigned int field_index,
 823                                       unsigned int report_counts)
 824{
 825        struct hid_report *report;
 826
 827        if (type > HID_FEATURE_REPORT) {
 828                hid_err(hid, "invalid HID report type %u\n", type);
 829                return NULL;
 830        }
 831
 832        if (id >= HID_MAX_IDS) {
 833                hid_err(hid, "invalid HID report id %u\n", id);
 834                return NULL;
 835        }
 836
 837        /*
 838         * Explicitly not using hid_get_report() here since it depends on
 839         * ->numbered being checked, which may not always be the case when
 840         * drivers go to access report values.
 841         */
 842        report = hid->report_enum[type].report_id_hash[id];
 843        if (!report) {
 844                hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
 845                return NULL;
 846        }
 847        if (report->maxfield <= field_index) {
 848                hid_err(hid, "not enough fields in %s %u\n",
 849                        hid_report_names[type], id);
 850                return NULL;
 851        }
 852        if (report->field[field_index]->report_count < report_counts) {
 853                hid_err(hid, "not enough values in %s %u field %u\n",
 854                        hid_report_names[type], id, field_index);
 855                return NULL;
 856        }
 857        return report;
 858}
 859EXPORT_SYMBOL_GPL(hid_validate_values);
 860
 861/**
 862 * hid_open_report - open a driver-specific device report
 863 *
 864 * @device: hid device
 865 *
 866 * Parse a report description into a hid_device structure. Reports are
 867 * enumerated, fields are attached to these reports.
 868 * 0 returned on success, otherwise nonzero error value.
 869 *
 870 * This function (or the equivalent hid_parse() macro) should only be
 871 * called from probe() in drivers, before starting the device.
 872 */
 873int hid_open_report(struct hid_device *device)
 874{
 875        struct hid_parser *parser;
 876        struct hid_item item;
 877        unsigned int size;
 878        __u8 *start;
 879        __u8 *buf;
 880        __u8 *end;
 881        int ret;
 882        static int (*dispatch_type[])(struct hid_parser *parser,
 883                                      struct hid_item *item) = {
 884                hid_parser_main,
 885                hid_parser_global,
 886                hid_parser_local,
 887                hid_parser_reserved
 888        };
 889
 890        if (WARN_ON(device->status & HID_STAT_PARSED))
 891                return -EBUSY;
 892
 893        start = device->dev_rdesc;
 894        if (WARN_ON(!start))
 895                return -ENODEV;
 896        size = device->dev_rsize;
 897
 898        buf = kmemdup(start, size, GFP_KERNEL);
 899        if (buf == NULL)
 900                return -ENOMEM;
 901
 902        if (device->driver->report_fixup)
 903                start = device->driver->report_fixup(device, buf, &size);
 904        else
 905                start = buf;
 906
 907        start = kmemdup(start, size, GFP_KERNEL);
 908        kfree(buf);
 909        if (start == NULL)
 910                return -ENOMEM;
 911
 912        device->rdesc = start;
 913        device->rsize = size;
 914
 915        parser = vzalloc(sizeof(struct hid_parser));
 916        if (!parser) {
 917                ret = -ENOMEM;
 918                goto err;
 919        }
 920
 921        parser->device = device;
 922
 923        end = start + size;
 924
 925        device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
 926                                     sizeof(struct hid_collection), GFP_KERNEL);
 927        if (!device->collection) {
 928                ret = -ENOMEM;
 929                goto err;
 930        }
 931        device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
 932
 933        ret = -EINVAL;
 934        while ((start = fetch_item(start, end, &item)) != NULL) {
 935
 936                if (item.format != HID_ITEM_FORMAT_SHORT) {
 937                        hid_err(device, "unexpected long global item\n");
 938                        goto err;
 939                }
 940
 941                if (dispatch_type[item.type](parser, &item)) {
 942                        hid_err(device, "item %u %u %u %u parsing failed\n",
 943                                item.format, (unsigned)item.size,
 944                                (unsigned)item.type, (unsigned)item.tag);
 945                        goto err;
 946                }
 947
 948                if (start == end) {
 949                        if (parser->collection_stack_ptr) {
 950                                hid_err(device, "unbalanced collection at end of report description\n");
 951                                goto err;
 952                        }
 953                        if (parser->local.delimiter_depth) {
 954                                hid_err(device, "unbalanced delimiter at end of report description\n");
 955                                goto err;
 956                        }
 957                        vfree(parser);
 958                        device->status |= HID_STAT_PARSED;
 959                        return 0;
 960                }
 961        }
 962
 963        hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
 964err:
 965        vfree(parser);
 966        hid_close_report(device);
 967        return ret;
 968}
 969EXPORT_SYMBOL_GPL(hid_open_report);
 970
 971/*
 972 * Convert a signed n-bit integer to signed 32-bit integer. Common
 973 * cases are done through the compiler, the screwed things has to be
 974 * done by hand.
 975 */
 976
 977static s32 snto32(__u32 value, unsigned n)
 978{
 979        switch (n) {
 980        case 8:  return ((__s8)value);
 981        case 16: return ((__s16)value);
 982        case 32: return ((__s32)value);
 983        }
 984        return value & (1 << (n - 1)) ? value | (-1 << n) : value;
 985}
 986
 987s32 hid_snto32(__u32 value, unsigned n)
 988{
 989        return snto32(value, n);
 990}
 991EXPORT_SYMBOL_GPL(hid_snto32);
 992
 993/*
 994 * Convert a signed 32-bit integer to a signed n-bit integer.
 995 */
 996
 997static u32 s32ton(__s32 value, unsigned n)
 998{
 999        s32 a = value >> (n - 1);
1000        if (a && a != -1)
1001                return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
1002        return value & ((1 << n) - 1);
1003}
1004
1005/*
1006 * Extract/implement a data field from/to a little endian report (bit array).
1007 *
1008 * Code sort-of follows HID spec:
1009 *     http://www.usb.org/developers/devclass_docs/HID1_11.pdf
1010 *
1011 * While the USB HID spec allows unlimited length bit fields in "report
1012 * descriptors", most devices never use more than 16 bits.
1013 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
1014 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
1015 */
1016
1017static __u32 extract(const struct hid_device *hid, __u8 *report,
1018                     unsigned offset, unsigned n)
1019{
1020        u64 x;
1021
1022        if (n > 32)
1023                hid_warn(hid, "extract() called with n (%d) > 32! (%s)\n",
1024                         n, current->comm);
1025
1026        report += offset >> 3;  /* adjust byte index */
1027        offset &= 7;            /* now only need bit offset into one byte */
1028        x = get_unaligned_le64(report);
1029        x = (x >> offset) & ((1ULL << n) - 1);  /* extract bit field */
1030        return (u32) x;
1031}
1032
1033/*
1034 * "implement" : set bits in a little endian bit stream.
1035 * Same concepts as "extract" (see comments above).
1036 * The data mangled in the bit stream remains in little endian
1037 * order the whole time. It make more sense to talk about
1038 * endianness of register values by considering a register
1039 * a "cached" copy of the little endiad bit stream.
1040 */
1041static void implement(const struct hid_device *hid, __u8 *report,
1042                      unsigned offset, unsigned n, __u32 value)
1043{
1044        u64 x;
1045        u64 m = (1ULL << n) - 1;
1046
1047        if (n > 32)
1048                hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
1049                         __func__, n, current->comm);
1050
1051        if (value > m)
1052                hid_warn(hid, "%s() called with too large value %d! (%s)\n",
1053                         __func__, value, current->comm);
1054        WARN_ON(value > m);
1055        value &= m;
1056
1057        report += offset >> 3;
1058        offset &= 7;
1059
1060        x = get_unaligned_le64(report);
1061        x &= ~(m << offset);
1062        x |= ((u64)value) << offset;
1063        put_unaligned_le64(x, report);
1064}
1065
1066/*
1067 * Search an array for a value.
1068 */
1069
1070static int search(__s32 *array, __s32 value, unsigned n)
1071{
1072        while (n--) {
1073                if (*array++ == value)
1074                        return 0;
1075        }
1076        return -1;
1077}
1078
1079/**
1080 * hid_match_report - check if driver's raw_event should be called
1081 *
1082 * @hid: hid device
1083 * @report_type: type to match against
1084 *
1085 * compare hid->driver->report_table->report_type to report->type
1086 */
1087static int hid_match_report(struct hid_device *hid, struct hid_report *report)
1088{
1089        const struct hid_report_id *id = hid->driver->report_table;
1090
1091        if (!id) /* NULL means all */
1092                return 1;
1093
1094        for (; id->report_type != HID_TERMINATOR; id++)
1095                if (id->report_type == HID_ANY_ID ||
1096                                id->report_type == report->type)
1097                        return 1;
1098        return 0;
1099}
1100
1101/**
1102 * hid_match_usage - check if driver's event should be called
1103 *
1104 * @hid: hid device
1105 * @usage: usage to match against
1106 *
1107 * compare hid->driver->usage_table->usage_{type,code} to
1108 * usage->usage_{type,code}
1109 */
1110static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
1111{
1112        const struct hid_usage_id *id = hid->driver->usage_table;
1113
1114        if (!id) /* NULL means all */
1115                return 1;
1116
1117        for (; id->usage_type != HID_ANY_ID - 1; id++)
1118                if ((id->usage_hid == HID_ANY_ID ||
1119                                id->usage_hid == usage->hid) &&
1120                                (id->usage_type == HID_ANY_ID ||
1121                                id->usage_type == usage->type) &&
1122                                (id->usage_code == HID_ANY_ID ||
1123                                 id->usage_code == usage->code))
1124                        return 1;
1125        return 0;
1126}
1127
1128static void hid_process_event(struct hid_device *hid, struct hid_field *field,
1129                struct hid_usage *usage, __s32 value, int interrupt)
1130{
1131        struct hid_driver *hdrv = hid->driver;
1132        int ret;
1133
1134        if (!list_empty(&hid->debug_list))
1135                hid_dump_input(hid, usage, value);
1136
1137        if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
1138                ret = hdrv->event(hid, field, usage, value);
1139                if (ret != 0) {
1140                        if (ret < 0)
1141                                hid_err(hid, "%s's event failed with %d\n",
1142                                                hdrv->name, ret);
1143                        return;
1144                }
1145        }
1146
1147        if (hid->claimed & HID_CLAIMED_INPUT)
1148                hidinput_hid_event(hid, field, usage, value);
1149        if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
1150                hid->hiddev_hid_event(hid, field, usage, value);
1151}
1152
1153/*
1154 * Analyse a received field, and fetch the data from it. The field
1155 * content is stored for next report processing (we do differential
1156 * reporting to the layer).
1157 */
1158
1159static void hid_input_field(struct hid_device *hid, struct hid_field *field,
1160                            __u8 *data, int interrupt)
1161{
1162        unsigned n;
1163        unsigned count = field->report_count;
1164        unsigned offset = field->report_offset;
1165        unsigned size = field->report_size;
1166        __s32 min = field->logical_minimum;
1167        __s32 max = field->logical_maximum;
1168        __s32 *value;
1169
1170        value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
1171        if (!value)
1172                return;
1173
1174        for (n = 0; n < count; n++) {
1175
1176                value[n] = min < 0 ?
1177                        snto32(extract(hid, data, offset + n * size, size),
1178                               size) :
1179                        extract(hid, data, offset + n * size, size);
1180
1181                /* Ignore report if ErrorRollOver */
1182                if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
1183                    value[n] >= min && value[n] <= max &&
1184                    field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
1185                        goto exit;
1186        }
1187
1188        for (n = 0; n < count; n++) {
1189
1190                if (HID_MAIN_ITEM_VARIABLE & field->flags) {
1191                        hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
1192                        continue;
1193                }
1194
1195                if (field->value[n] >= min && field->value[n] <= max
1196                        && field->usage[field->value[n] - min].hid
1197                        && search(value, field->value[n], count))
1198                                hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
1199
1200                if (value[n] >= min && value[n] <= max
1201                        && field->usage[value[n] - min].hid
1202                        && search(field->value, value[n], count))
1203                                hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
1204        }
1205
1206        memcpy(field->value, value, count * sizeof(__s32));
1207exit:
1208        kfree(value);
1209}
1210
1211/*
1212 * Output the field into the report.
1213 */
1214
1215static void hid_output_field(const struct hid_device *hid,
1216                             struct hid_field *field, __u8 *data)
1217{
1218        unsigned count = field->report_count;
1219        unsigned offset = field->report_offset;
1220        unsigned size = field->report_size;
1221        unsigned n;
1222
1223        for (n = 0; n < count; n++) {
1224                if (field->logical_minimum < 0) /* signed values */
1225                        implement(hid, data, offset + n * size, size,
1226                                  s32ton(field->value[n], size));
1227                else                            /* unsigned values */
1228                        implement(hid, data, offset + n * size, size,
1229                                  field->value[n]);
1230        }
1231}
1232
1233/*
1234 * Create a report. 'data' has to be allocated using
1235 * hid_alloc_report_buf() so that it has proper size.
1236 */
1237
1238void hid_output_report(struct hid_report *report, __u8 *data)
1239{
1240        unsigned n;
1241
1242        if (report->id > 0)
1243                *data++ = report->id;
1244
1245        memset(data, 0, ((report->size - 1) >> 3) + 1);
1246        for (n = 0; n < report->maxfield; n++)
1247                hid_output_field(report->device, report->field[n], data);
1248}
1249EXPORT_SYMBOL_GPL(hid_output_report);
1250
1251/*
1252 * Allocator for buffer that is going to be passed to hid_output_report()
1253 */
1254u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
1255{
1256        /*
1257         * 7 extra bytes are necessary to achieve proper functionality
1258         * of implement() working on 8 byte chunks
1259         */
1260
1261        int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7;
1262
1263        return kmalloc(len, flags);
1264}
1265EXPORT_SYMBOL_GPL(hid_alloc_report_buf);
1266
1267/*
1268 * Set a field value. The report this field belongs to has to be
1269 * created and transferred to the device, to set this value in the
1270 * device.
1271 */
1272
1273int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
1274{
1275        unsigned size;
1276
1277        if (!field)
1278                return -1;
1279
1280        size = field->report_size;
1281
1282        hid_dump_input(field->report->device, field->usage + offset, value);
1283
1284        if (offset >= field->report_count) {
1285                hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
1286                                offset, field->report_count);
1287                return -1;
1288        }
1289        if (field->logical_minimum < 0) {
1290                if (value != snto32(s32ton(value, size), size)) {
1291                        hid_err(field->report->device, "value %d is out of range\n", value);
1292                        return -1;
1293                }
1294        }
1295        field->value[offset] = value;
1296        return 0;
1297}
1298EXPORT_SYMBOL_GPL(hid_set_field);
1299
1300static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
1301                const u8 *data)
1302{
1303        struct hid_report *report;
1304        unsigned int n = 0;     /* Normally report number is 0 */
1305
1306        /* Device uses numbered reports, data[0] is report number */
1307        if (report_enum->numbered)
1308                n = *data;
1309
1310        report = report_enum->report_id_hash[n];
1311        if (report == NULL)
1312                dbg_hid("undefined report_id %u received\n", n);
1313
1314        return report;
1315}
1316
1317int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
1318                int interrupt)
1319{
1320        struct hid_report_enum *report_enum = hid->report_enum + type;
1321        struct hid_report *report;
1322        struct hid_driver *hdrv;
1323        unsigned int a;
1324        int rsize, csize = size;
1325        u8 *cdata = data;
1326        int ret = 0;
1327
1328        report = hid_get_report(report_enum, data);
1329        if (!report)
1330                goto out;
1331
1332        if (report_enum->numbered) {
1333                cdata++;
1334                csize--;
1335        }
1336
1337        rsize = ((report->size - 1) >> 3) + 1;
1338
1339        if (rsize > HID_MAX_BUFFER_SIZE)
1340                rsize = HID_MAX_BUFFER_SIZE;
1341
1342        if (csize < rsize) {
1343                dbg_hid("report %d is too short, (%d < %d)\n", report->id,
1344                                csize, rsize);
1345                memset(cdata + csize, 0, rsize - csize);
1346        }
1347
1348        if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
1349                hid->hiddev_report_event(hid, report);
1350        if (hid->claimed & HID_CLAIMED_HIDRAW) {
1351                ret = hidraw_report_event(hid, data, size);
1352                if (ret)
1353                        goto out;
1354        }
1355
1356        if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
1357                for (a = 0; a < report->maxfield; a++)
1358                        hid_input_field(hid, report->field[a], cdata, interrupt);
1359                hdrv = hid->driver;
1360                if (hdrv && hdrv->report)
1361                        hdrv->report(hid, report);
1362        }
1363
1364        if (hid->claimed & HID_CLAIMED_INPUT)
1365                hidinput_report_event(hid, report);
1366out:
1367        return ret;
1368}
1369EXPORT_SYMBOL_GPL(hid_report_raw_event);
1370
1371/**
1372 * hid_input_report - report data from lower layer (usb, bt...)
1373 *
1374 * @hid: hid device
1375 * @type: HID report type (HID_*_REPORT)
1376 * @data: report contents
1377 * @size: size of data parameter
1378 * @interrupt: distinguish between interrupt and control transfers
1379 *
1380 * This is data entry for lower layers.
1381 */
1382int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
1383{
1384        struct hid_report_enum *report_enum;
1385        struct hid_driver *hdrv;
1386        struct hid_report *report;
1387        int ret = 0;
1388
1389        if (!hid)
1390                return -ENODEV;
1391
1392        if (down_trylock(&hid->driver_input_lock))
1393                return -EBUSY;
1394
1395        if (!hid->driver) {
1396                ret = -ENODEV;
1397                goto unlock;
1398        }
1399        report_enum = hid->report_enum + type;
1400        hdrv = hid->driver;
1401
1402        if (!size) {
1403                dbg_hid("empty report\n");
1404                ret = -1;
1405                goto unlock;
1406        }
1407
1408        /* Avoid unnecessary overhead if debugfs is disabled */
1409        if (!list_empty(&hid->debug_list))
1410                hid_dump_report(hid, type, data, size);
1411
1412        report = hid_get_report(report_enum, data);
1413
1414        if (!report) {
1415                ret = -1;
1416                goto unlock;
1417        }
1418
1419        if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
1420                ret = hdrv->raw_event(hid, report, data, size);
1421                if (ret < 0) {
1422                        ret = ret < 0 ? ret : 0;
1423                        goto unlock;
1424                }
1425        }
1426
1427        ret = hid_report_raw_event(hid, type, data, size, interrupt);
1428
1429unlock:
1430        up(&hid->driver_input_lock);
1431        return ret;
1432}
1433EXPORT_SYMBOL_GPL(hid_input_report);
1434
1435static bool hid_match_one_id(struct hid_device *hdev,
1436                const struct hid_device_id *id)
1437{
1438        return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
1439                (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
1440                (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
1441                (id->product == HID_ANY_ID || id->product == hdev->product);
1442}
1443
1444const struct hid_device_id *hid_match_id(struct hid_device *hdev,
1445                const struct hid_device_id *id)
1446{
1447        for (; id->bus; id++)
1448                if (hid_match_one_id(hdev, id))
1449                        return id;
1450
1451        return NULL;
1452}
1453
1454static const struct hid_device_id hid_hiddev_list[] = {
1455        { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
1456        { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
1457        { }
1458};
1459
1460static bool hid_hiddev(struct hid_device *hdev)
1461{
1462        return !!hid_match_id(hdev, hid_hiddev_list);
1463}
1464
1465
1466static ssize_t
1467read_report_descriptor(struct file *filp, struct kobject *kobj,
1468                struct bin_attribute *attr,
1469                char *buf, loff_t off, size_t count)
1470{
1471        struct device *dev = container_of(kobj, struct device, kobj);
1472        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1473
1474        if (off >= hdev->rsize)
1475                return 0;
1476
1477        if (off + count > hdev->rsize)
1478                count = hdev->rsize - off;
1479
1480        memcpy(buf, hdev->rdesc + off, count);
1481
1482        return count;
1483}
1484
1485static struct bin_attribute dev_bin_attr_report_desc = {
1486        .attr = { .name = "report_descriptor", .mode = 0444 },
1487        .read = read_report_descriptor,
1488        .size = HID_MAX_DESCRIPTOR_SIZE,
1489};
1490
1491int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
1492{
1493        static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
1494                "Joystick", "Gamepad", "Keyboard", "Keypad",
1495                "Multi-Axis Controller"
1496        };
1497        const char *type, *bus;
1498        char buf[64];
1499        unsigned int i;
1500        int len;
1501        int ret;
1502
1503        if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
1504                connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
1505        if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
1506                connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
1507        if (hdev->bus != BUS_USB)
1508                connect_mask &= ~HID_CONNECT_HIDDEV;
1509        if (hid_hiddev(hdev))
1510                connect_mask |= HID_CONNECT_HIDDEV_FORCE;
1511
1512        if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
1513                                connect_mask & HID_CONNECT_HIDINPUT_FORCE))
1514                hdev->claimed |= HID_CLAIMED_INPUT;
1515
1516        if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
1517                        !hdev->hiddev_connect(hdev,
1518                                connect_mask & HID_CONNECT_HIDDEV_FORCE))
1519                hdev->claimed |= HID_CLAIMED_HIDDEV;
1520        if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
1521                hdev->claimed |= HID_CLAIMED_HIDRAW;
1522
1523        /* Drivers with the ->raw_event callback set are not required to connect
1524         * to any other listener. */
1525        if (!hdev->claimed && !hdev->driver->raw_event) {
1526                hid_err(hdev, "device has no listeners, quitting\n");
1527                return -ENODEV;
1528        }
1529
1530        if ((hdev->claimed & HID_CLAIMED_INPUT) &&
1531                        (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
1532                hdev->ff_init(hdev);
1533
1534        len = 0;
1535        if (hdev->claimed & HID_CLAIMED_INPUT)
1536                len += sprintf(buf + len, "input");
1537        if (hdev->claimed & HID_CLAIMED_HIDDEV)
1538                len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
1539                                hdev->minor);
1540        if (hdev->claimed & HID_CLAIMED_HIDRAW)
1541                len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
1542                                ((struct hidraw *)hdev->hidraw)->minor);
1543
1544        type = "Device";
1545        for (i = 0; i < hdev->maxcollection; i++) {
1546                struct hid_collection *col = &hdev->collection[i];
1547                if (col->type == HID_COLLECTION_APPLICATION &&
1548                   (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1549                   (col->usage & 0xffff) < ARRAY_SIZE(types)) {
1550                        type = types[col->usage & 0xffff];
1551                        break;
1552                }
1553        }
1554
1555        switch (hdev->bus) {
1556        case BUS_USB:
1557                bus = "USB";
1558                break;
1559        case BUS_BLUETOOTH:
1560                bus = "BLUETOOTH";
1561                break;
1562        default:
1563                bus = "<UNKNOWN>";
1564        }
1565
1566        ret = device_create_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1567        if (ret)
1568                hid_warn(hdev,
1569                         "can't create sysfs report descriptor attribute err: %d\n", ret);
1570
1571        hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
1572                 buf, bus, hdev->version >> 8, hdev->version & 0xff,
1573                 type, hdev->name, hdev->phys);
1574
1575        return 0;
1576}
1577EXPORT_SYMBOL_GPL(hid_connect);
1578
1579void hid_disconnect(struct hid_device *hdev)
1580{
1581        device_remove_bin_file(&hdev->dev, &dev_bin_attr_report_desc);
1582        if (hdev->claimed & HID_CLAIMED_INPUT)
1583                hidinput_disconnect(hdev);
1584        if (hdev->claimed & HID_CLAIMED_HIDDEV)
1585                hdev->hiddev_disconnect(hdev);
1586        if (hdev->claimed & HID_CLAIMED_HIDRAW)
1587                hidraw_disconnect(hdev);
1588}
1589EXPORT_SYMBOL_GPL(hid_disconnect);
1590
1591/*
1592 * A list of devices for which there is a specialized driver on HID bus.
1593 *
1594 * Please note that for multitouch devices (driven by hid-multitouch driver),
1595 * there is a proper autodetection and autoloading in place (based on presence
1596 * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
1597 * as we are doing the right thing in hid_scan_usage().
1598 *
1599 * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
1600 * physical is found inside a usage page of type sensor, hid-sensor-hub will be
1601 * used as a driver. See hid_scan_report().
1602 */
1603static const struct hid_device_id hid_have_special_driver[] = {
1604        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
1605        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
1606        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
1607        { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
1608        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
1609        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
1610        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
1611        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
1612        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
1613        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
1614        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
1615        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
1616        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
1617        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
1618        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
1619        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
1620        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
1621        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
1622        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
1623        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
1624        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
1625        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
1626        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
1627        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
1628        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
1629        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
1630        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
1631        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
1632        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
1633        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
1634        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
1635        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
1636        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
1637        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
1638        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
1639        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
1640        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
1641        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
1642        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
1643        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
1644        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
1645        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
1646        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
1647        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
1648        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
1649        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
1650        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
1651        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
1652        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
1653        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
1654        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
1655        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
1656        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
1657        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
1658        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
1659        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
1660        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
1661        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
1662        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
1663        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
1664        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
1665        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
1666        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
1667        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
1668        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
1669        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
1670        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
1671        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
1672        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
1673        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
1674        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
1675        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
1676        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
1677        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
1678        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
1679        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
1680        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
1681        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
1682        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
1683        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
1684        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
1685        { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
1686        { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
1687        { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
1688        { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
1689        { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
1690        { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
1691        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
1692        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
1693        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
1694        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
1695        { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
1696        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
1697        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
1698        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
1699        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
1700        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
1701        { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
1702        { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
1703        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
1704        { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
1705        { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
1706        { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
1707        { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
1708        { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
1709        { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
1710        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
1711        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
1712        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
1713        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
1714        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
1715        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
1716        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
1717        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
1718        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
1719        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
1720        { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_580) },
1721        { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
1722        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
1723        { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
1724        { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
1725        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
1726        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
1727        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
1728        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
1729        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
1730        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
1731        { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
1732        { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
1733#if IS_ENABLED(CONFIG_HID_LENOVO_TPKBD)
1734        { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
1735#endif
1736        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
1737        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
1738        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
1739        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
1740        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
1741        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
1742        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
1743        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
1744        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
1745        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
1746        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
1747        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
1748        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
1749        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
1750        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
1751        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
1752        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
1753        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
1754        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
1755        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
1756        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
1757        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
1758        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
1759        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
1760        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
1761#if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
1762        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
1763        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
1764#endif
1765        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
1766        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
1767        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
1768        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
1769        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
1770        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
1771        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
1772        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
1773        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
1774        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
1775        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
1776        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
1777        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
1778        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
1779        { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
1780        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
1781        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
1782        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
1783        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
1784        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
1785        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
1786        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
1787        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
1788        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
1789        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
1790        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
1791        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
1792        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },
1793        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
1794        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
1795        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
1796        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
1797        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
1798        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
1799        { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
1800        { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
1801        { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
1802        { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
1803#if IS_ENABLED(CONFIG_HID_ROCCAT)
1804        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
1805        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
1806        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
1807        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
1808        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
1809        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
1810        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
1811        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
1812        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
1813        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
1814        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
1815#endif
1816        { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
1817        { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
1818        { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
1819        { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
1820        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
1821        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
1822        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
1823        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1824        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
1825        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
1826        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
1827        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
1828        { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
1829        { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
1830        { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
1831        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
1832        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
1833        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
1834        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
1835        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
1836        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
1837        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
1838        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
1839        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
1840        { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
1841        { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
1842        { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
1843        { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
1844        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
1845        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
1846        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
1847        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
1848        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
1849        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
1850        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
1851        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
1852        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
1853        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
1854        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
1855        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
1856        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
1857        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
1858        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
1859        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
1860        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
1861        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
1862        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
1863        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
1864        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
1865        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
1866        { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
1867        { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
1868        { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
1869        { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
1870        { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
1871
1872        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
1873        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1874        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO2, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1875        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1876        { }
1877};
1878
1879struct hid_dynid {
1880        struct list_head list;
1881        struct hid_device_id id;
1882};
1883
1884/**
1885 * store_new_id - add a new HID device ID to this driver and re-probe devices
1886 * @driver: target device driver
1887 * @buf: buffer for scanning device ID data
1888 * @count: input size
1889 *
1890 * Adds a new dynamic hid device ID to this driver,
1891 * and causes the driver to probe for all devices again.
1892 */
1893static ssize_t store_new_id(struct device_driver *drv, const char *buf,
1894                size_t count)
1895{
1896        struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1897        struct hid_dynid *dynid;
1898        __u32 bus, vendor, product;
1899        unsigned long driver_data = 0;
1900        int ret;
1901
1902        ret = sscanf(buf, "%x %x %x %lx",
1903                        &bus, &vendor, &product, &driver_data);
1904        if (ret < 3)
1905                return -EINVAL;
1906
1907        dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
1908        if (!dynid)
1909                return -ENOMEM;
1910
1911        dynid->id.bus = bus;
1912        dynid->id.group = HID_GROUP_ANY;
1913        dynid->id.vendor = vendor;
1914        dynid->id.product = product;
1915        dynid->id.driver_data = driver_data;
1916
1917        spin_lock(&hdrv->dyn_lock);
1918        list_add_tail(&dynid->list, &hdrv->dyn_list);
1919        spin_unlock(&hdrv->dyn_lock);
1920
1921        ret = driver_attach(&hdrv->driver);
1922
1923        return ret ? : count;
1924}
1925static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);
1926
1927static void hid_free_dynids(struct hid_driver *hdrv)
1928{
1929        struct hid_dynid *dynid, *n;
1930
1931        spin_lock(&hdrv->dyn_lock);
1932        list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
1933                list_del(&dynid->list);
1934                kfree(dynid);
1935        }
1936        spin_unlock(&hdrv->dyn_lock);
1937}
1938
1939static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
1940                struct hid_driver *hdrv)
1941{
1942        struct hid_dynid *dynid;
1943
1944        spin_lock(&hdrv->dyn_lock);
1945        list_for_each_entry(dynid, &hdrv->dyn_list, list) {
1946                if (hid_match_one_id(hdev, &dynid->id)) {
1947                        spin_unlock(&hdrv->dyn_lock);
1948                        return &dynid->id;
1949                }
1950        }
1951        spin_unlock(&hdrv->dyn_lock);
1952
1953        return hid_match_id(hdev, hdrv->id_table);
1954}
1955
1956static int hid_bus_match(struct device *dev, struct device_driver *drv)
1957{
1958        struct hid_driver *hdrv = container_of(drv, struct hid_driver, driver);
1959        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1960
1961        return hid_match_device(hdev, hdrv) != NULL;
1962}
1963
1964static int hid_device_probe(struct device *dev)
1965{
1966        struct hid_driver *hdrv = container_of(dev->driver,
1967                        struct hid_driver, driver);
1968        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
1969        const struct hid_device_id *id;
1970        int ret = 0;
1971
1972        if (down_interruptible(&hdev->driver_lock))
1973                return -EINTR;
1974        if (down_interruptible(&hdev->driver_input_lock)) {
1975                ret = -EINTR;
1976                goto unlock_driver_lock;
1977        }
1978        hdev->io_started = false;
1979
1980        if (!hdev->driver) {
1981                id = hid_match_device(hdev, hdrv);
1982                if (id == NULL) {
1983                        ret = -ENODEV;
1984                        goto unlock;
1985                }
1986
1987                hdev->driver = hdrv;
1988                if (hdrv->probe) {
1989                        ret = hdrv->probe(hdev, id);
1990                } else { /* default probe */
1991                        ret = hid_open_report(hdev);
1992                        if (!ret)
1993                                ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
1994                }
1995                if (ret) {
1996                        hid_close_report(hdev);
1997                        hdev->driver = NULL;
1998                }
1999        }
2000unlock:
2001        if (!hdev->io_started)
2002                up(&hdev->driver_input_lock);
2003unlock_driver_lock:
2004        up(&hdev->driver_lock);
2005        return ret;
2006}
2007
2008static int hid_device_remove(struct device *dev)
2009{
2010        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2011        struct hid_driver *hdrv;
2012        int ret = 0;
2013
2014        if (down_interruptible(&hdev->driver_lock))
2015                return -EINTR;
2016        if (down_interruptible(&hdev->driver_input_lock)) {
2017                ret = -EINTR;
2018                goto unlock_driver_lock;
2019        }
2020        hdev->io_started = false;
2021
2022        hdrv = hdev->driver;
2023        if (hdrv) {
2024                if (hdrv->remove)
2025                        hdrv->remove(hdev);
2026                else /* default remove */
2027                        hid_hw_stop(hdev);
2028                hid_close_report(hdev);
2029                hdev->driver = NULL;
2030        }
2031
2032        if (!hdev->io_started)
2033                up(&hdev->driver_input_lock);
2034unlock_driver_lock:
2035        up(&hdev->driver_lock);
2036        return ret;
2037}
2038
2039static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
2040                             char *buf)
2041{
2042        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2043        int len;
2044
2045        len = snprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
2046                       hdev->bus, hdev->group, hdev->vendor, hdev->product);
2047
2048        return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
2049}
2050static DEVICE_ATTR_RO(modalias);
2051
2052static struct attribute *hid_dev_attrs[] = {
2053        &dev_attr_modalias.attr,
2054        NULL,
2055};
2056ATTRIBUTE_GROUPS(hid_dev);
2057
2058static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
2059{
2060        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
2061
2062        if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
2063                        hdev->bus, hdev->vendor, hdev->product))
2064                return -ENOMEM;
2065
2066        if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
2067                return -ENOMEM;
2068
2069        if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
2070                return -ENOMEM;
2071
2072        if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
2073                return -ENOMEM;
2074
2075        if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
2076                           hdev->bus, hdev->group, hdev->vendor, hdev->product))
2077                return -ENOMEM;
2078
2079        return 0;
2080}
2081
2082static struct bus_type hid_bus_type = {
2083        .name           = "hid",
2084        .dev_groups     = hid_dev_groups,
2085        .match          = hid_bus_match,
2086        .probe          = hid_device_probe,
2087        .remove         = hid_device_remove,
2088        .uevent         = hid_uevent,
2089};
2090
2091/* a list of devices that shouldn't be handled by HID core at all */
2092static const struct hid_device_id hid_ignore_list[] = {
2093        { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
2094        { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
2095        { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
2096        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
2097        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
2098        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
2099        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
2100        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
2101        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
2102        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
2103        { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
2104        { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
2105        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
2106        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
2107        { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
2108        { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
2109        { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
2110        { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
2111        { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
2112        { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
2113        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
2114        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
2115        { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
2116        { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
2117        { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
2118        { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
2119        { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
2120        { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
2121        { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
2122        { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
2123        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
2124        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
2125        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
2126        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30) },
2127        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30) },
2128        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT) },
2129        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_16_16_IF_KIT) },
2130        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT) },
2131        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_7_IF_KIT) },
2132        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT) },
2133        { HID_USB_DEVICE(USB_VENDOR_ID_GLAB, USB_DEVICE_ID_PHIDGET_MOTORCONTROL) },
2134        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
2135        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
2136        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
2137        { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
2138        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
2139        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
2140        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
2141        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
2142        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
2143        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
2144        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
2145        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
2146        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
2147        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
2148        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
2149        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
2150        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
2151        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
2152        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
2153        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
2154        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
2155        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
2156        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
2157        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
2158        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
2159        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
2160        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
2161        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
2162        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
2163        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
2164        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
2165        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
2166        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
2167        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
2168        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
2169        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
2170        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
2171        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
2172        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
2173        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
2174        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
2175        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
2176        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
2177        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
2178        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
2179        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
2180        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
2181        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
2182        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
2183        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
2184        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
2185        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
2186        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
2187        { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
2188        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
2189        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
2190        { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
2191        { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
2192        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
2193        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
2194        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
2195        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
2196        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
2197        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
2198        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
2199        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
2200        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
2201        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
2202        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
2203        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
2204        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
2205        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
2206        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
2207        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
2208        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
2209        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
2210        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
2211        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
2212        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
2213        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
2214        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
2215        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
2216        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
2217        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
2218        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
2219        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
2220        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
2221        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
2222        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
2223        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
2224        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
2225        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
2226        { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
2227        { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
2228        { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
2229        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
2230        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
2231        { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
2232        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
2233        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
2234        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
2235        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
2236        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
2237        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
2238        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
2239        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
2240        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
2241        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
2242        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
2243        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
2244        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
2245        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
2246        { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
2247        { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
2248#if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
2249        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
2250        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
2251        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
2252        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
2253        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
2254        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
2255        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
2256        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
2257#endif
2258        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LABPRO) },
2259        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
2260        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
2261        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
2262        { HID_USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_LCSPEC) },
2263        { HID_USB_DEVICE(USB_VENDOR_ID_WACOM, HID_ANY_ID) },
2264        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20) },
2265        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20) },
2266        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_8_8_4_IF_KIT) },
2267        { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
2268        { }
2269};
2270
2271/**
2272 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
2273 *
2274 * There are composite devices for which we want to ignore only a certain
2275 * interface. This is a list of devices for which only the mouse interface will
2276 * be ignored. This allows a dedicated driver to take care of the interface.
2277 */
2278static const struct hid_device_id hid_mouse_ignore_list[] = {
2279        /* appletouch driver */
2280        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
2281        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
2282        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
2283        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
2284        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
2285        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
2286        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
2287        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
2288        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
2289        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
2290        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
2291        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
2292        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
2293        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
2294        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
2295        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
2296        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
2297        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
2298        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
2299        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
2300        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
2301        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
2302        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
2303        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
2304        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
2305        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
2306        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
2307        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
2308        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
2309        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
2310        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
2311        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
2312        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
2313        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
2314        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
2315        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
2316        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
2317        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
2318        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
2319        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
2320        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
2321        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
2322        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
2323        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
2324        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
2325        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
2326        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
2327        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
2328        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
2329        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
2330        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
2331        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
2332        { }
2333};
2334
2335bool hid_ignore(struct hid_device *hdev)
2336{
2337        if (hdev->quirks & HID_QUIRK_NO_IGNORE)
2338                return false;
2339        if (hdev->quirks & HID_QUIRK_IGNORE)
2340                return true;
2341
2342        switch (hdev->vendor) {
2343        case USB_VENDOR_ID_CODEMERCS:
2344                /* ignore all Code Mercenaries IOWarrior devices */
2345                if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
2346                                hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
2347                        return true;
2348                break;
2349        case USB_VENDOR_ID_LOGITECH:
2350                if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
2351                                hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
2352                        return true;
2353                /*
2354                 * The Keene FM transmitter USB device has the same USB ID as
2355                 * the Logitech AudioHub Speaker, but it should ignore the hid.
2356                 * Check if the name is that of the Keene device.
2357                 * For reference: the name of the AudioHub is
2358                 * "HOLTEK  AudioHub Speaker".
2359                 */
2360                if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
2361                        !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
2362                                return true;
2363                break;
2364        case USB_VENDOR_ID_SOUNDGRAPH:
2365                if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
2366                    hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
2367                        return true;
2368                break;
2369        case USB_VENDOR_ID_HANWANG:
2370                if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
2371                    hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
2372                        return true;
2373                break;
2374        case USB_VENDOR_ID_JESS:
2375                if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
2376                                hdev->type == HID_TYPE_USBNONE)
2377                        return true;
2378                break;
2379        case USB_VENDOR_ID_DWAV:
2380                /* These are handled by usbtouchscreen. hdev->type is probably
2381                 * HID_TYPE_USBNONE, but we say !HID_TYPE_USBMOUSE to match
2382                 * usbtouchscreen. */
2383                if ((hdev->product == USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER ||
2384                     hdev->product == USB_DEVICE_ID_DWAV_TOUCHCONTROLLER) &&
2385                    hdev->type != HID_TYPE_USBMOUSE)
2386                        return true;
2387                break;
2388        case USB_VENDOR_ID_VELLEMAN:
2389                /* These are not HID devices.  They are handled by comedi. */
2390                if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
2391                     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
2392                    (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
2393                     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
2394                        return true;
2395                break;
2396        case USB_VENDOR_ID_ATMEL_V_USB:
2397                /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
2398                 * it has the same USB ID as many Atmel V-USB devices. This
2399                 * usb radio is handled by radio-ma901.c driver so we want
2400                 * ignore the hid. Check the name, bus, product and ignore
2401                 * if we have MA901 usb radio.
2402                 */
2403                if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
2404                        hdev->bus == BUS_USB &&
2405                        strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
2406                        return true;
2407                break;
2408        }
2409
2410        if (hdev->type == HID_TYPE_USBMOUSE &&
2411                        hid_match_id(hdev, hid_mouse_ignore_list))
2412                return true;
2413
2414        return !!hid_match_id(hdev, hid_ignore_list);
2415}
2416EXPORT_SYMBOL_GPL(hid_ignore);
2417
2418int hid_add_device(struct hid_device *hdev)
2419{
2420        static atomic_t id = ATOMIC_INIT(0);
2421        int ret;
2422
2423        if (WARN_ON(hdev->status & HID_STAT_ADDED))
2424                return -EBUSY;
2425
2426        /* we need to kill them here, otherwise they will stay allocated to
2427         * wait for coming driver */
2428        if (hid_ignore(hdev))
2429                return -ENODEV;
2430
2431        /*
2432         * Read the device report descriptor once and use as template
2433         * for the driver-specific modifications.
2434         */
2435        ret = hdev->ll_driver->parse(hdev);
2436        if (ret)
2437                return ret;
2438        if (!hdev->dev_rdesc)
2439                return -ENODEV;
2440
2441        /*
2442         * Scan generic devices for group information
2443         */
2444        if (hid_ignore_special_drivers ||
2445            !hid_match_id(hdev, hid_have_special_driver)) {
2446                ret = hid_scan_report(hdev);
2447                if (ret)
2448                        hid_warn(hdev, "bad device descriptor (%d)\n", ret);
2449        }
2450
2451        /* XXX hack, any other cleaner solution after the driver core
2452         * is converted to allow more than 20 bytes as the device name? */
2453        dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
2454                     hdev->vendor, hdev->product, atomic_inc_return(&id));
2455
2456        hid_debug_register(hdev, dev_name(&hdev->dev));
2457        ret = device_add(&hdev->dev);
2458        if (!ret)
2459                hdev->status |= HID_STAT_ADDED;
2460        else
2461                hid_debug_unregister(hdev);
2462
2463        return ret;
2464}
2465EXPORT_SYMBOL_GPL(hid_add_device);
2466
2467/**
2468 * hid_allocate_device - allocate new hid device descriptor
2469 *
2470 * Allocate and initialize hid device, so that hid_destroy_device might be
2471 * used to free it.
2472 *
2473 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
2474 * error value.
2475 */
2476struct hid_device *hid_allocate_device(void)
2477{
2478        struct hid_device *hdev;
2479        int ret = -ENOMEM;
2480
2481        hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
2482        if (hdev == NULL)
2483                return ERR_PTR(ret);
2484
2485        device_initialize(&hdev->dev);
2486        hdev->dev.release = hid_device_release;
2487        hdev->dev.bus = &hid_bus_type;
2488
2489        hid_close_report(hdev);
2490
2491        init_waitqueue_head(&hdev->debug_wait);
2492        INIT_LIST_HEAD(&hdev->debug_list);
2493        spin_lock_init(&hdev->debug_list_lock);
2494        sema_init(&hdev->driver_lock, 1);
2495        sema_init(&hdev->driver_input_lock, 1);
2496
2497        return hdev;
2498}
2499EXPORT_SYMBOL_GPL(hid_allocate_device);
2500
2501static void hid_remove_device(struct hid_device *hdev)
2502{
2503        if (hdev->status & HID_STAT_ADDED) {
2504                device_del(&hdev->dev);
2505                hid_debug_unregister(hdev);
2506                hdev->status &= ~HID_STAT_ADDED;
2507        }
2508        kfree(hdev->dev_rdesc);
2509        hdev->dev_rdesc = NULL;
2510        hdev->dev_rsize = 0;
2511}
2512
2513/**
2514 * hid_destroy_device - free previously allocated device
2515 *
2516 * @hdev: hid device
2517 *
2518 * If you allocate hid_device through hid_allocate_device, you should ever
2519 * free by this function.
2520 */
2521void hid_destroy_device(struct hid_device *hdev)
2522{
2523        hid_remove_device(hdev);
2524        put_device(&hdev->dev);
2525}
2526EXPORT_SYMBOL_GPL(hid_destroy_device);
2527
2528int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
2529                const char *mod_name)
2530{
2531        int ret;
2532
2533        hdrv->driver.name = hdrv->name;
2534        hdrv->driver.bus = &hid_bus_type;
2535        hdrv->driver.owner = owner;
2536        hdrv->driver.mod_name = mod_name;
2537
2538        INIT_LIST_HEAD(&hdrv->dyn_list);
2539        spin_lock_init(&hdrv->dyn_lock);
2540
2541        ret = driver_register(&hdrv->driver);
2542        if (ret)
2543                return ret;
2544
2545        ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
2546        if (ret)
2547                driver_unregister(&hdrv->driver);
2548
2549        return ret;
2550}
2551EXPORT_SYMBOL_GPL(__hid_register_driver);
2552
2553void hid_unregister_driver(struct hid_driver *hdrv)
2554{
2555        driver_remove_file(&hdrv->driver, &driver_attr_new_id);
2556        driver_unregister(&hdrv->driver);
2557        hid_free_dynids(hdrv);
2558}
2559EXPORT_SYMBOL_GPL(hid_unregister_driver);
2560
2561int hid_check_keys_pressed(struct hid_device *hid)
2562{
2563        struct hid_input *hidinput;
2564        int i;
2565
2566        if (!(hid->claimed & HID_CLAIMED_INPUT))
2567                return 0;
2568
2569        list_for_each_entry(hidinput, &hid->inputs, list) {
2570                for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
2571                        if (hidinput->input->key[i])
2572                                return 1;
2573        }
2574
2575        return 0;
2576}
2577
2578EXPORT_SYMBOL_GPL(hid_check_keys_pressed);
2579
2580static int __init hid_init(void)
2581{
2582        int ret;
2583
2584        if (hid_debug)
2585                pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
2586                        "debugfs is now used for inspecting the device (report descriptor, reports)\n");
2587
2588        ret = bus_register(&hid_bus_type);
2589        if (ret) {
2590                pr_err("can't register hid bus\n");
2591                goto err;
2592        }
2593
2594        ret = hidraw_init();
2595        if (ret)
2596                goto err_bus;
2597
2598        hid_debug_init();
2599
2600        return 0;
2601err_bus:
2602        bus_unregister(&hid_bus_type);
2603err:
2604        return ret;
2605}
2606
2607static void __exit hid_exit(void)
2608{
2609        hid_debug_exit();
2610        hidraw_exit();
2611        bus_unregister(&hid_bus_type);
2612}
2613
2614module_init(hid_init);
2615module_exit(hid_exit);
2616
2617MODULE_AUTHOR("Andreas Gal");
2618MODULE_AUTHOR("Vojtech Pavlik");
2619MODULE_AUTHOR("Jiri Kosina");
2620MODULE_LICENSE(DRIVER_LICENSE);
2621
2622