LXR linux/drivers/usb/core/quirks.c

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * USB device quirk handling logic and table
   4 *
   5 * Copyright (c) 2007 Oliver Neukum
   6 * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de>
   7 */
   8
   9#include <linux/moduleparam.h>
  10#include <linux/usb.h>
  11#include <linux/usb/quirks.h>
  12#include <linux/usb/hcd.h>
  13#include "usb.h"
  14
  15struct quirk_entry {
  16        u16 vid;
  17        u16 pid;
  18        u32 flags;
  19};
  20
  21static DEFINE_MUTEX(quirk_mutex);
  22
  23static struct quirk_entry *quirk_list;
  24static unsigned int quirk_count;
  25
  26static char quirks_param[128];
  27
  28static int quirks_param_set(const char *val, const struct kernel_param *kp)
  29{
  30        char *p, *field;
  31        u16 vid, pid;
  32        u32 flags;
  33        size_t i;
  34        int err;
  35
  36        err = param_set_copystring(val, kp);
  37        if (err)
  38                return err;
  39
  40        mutex_lock(&quirk_mutex);
  41
  42        if (!*val) {
  43                quirk_count = 0;
  44                kfree(quirk_list);
  45                quirk_list = NULL;
  46                goto unlock;
  47        }
  48
  49        for (quirk_count = 1, i = 0; val[i]; i++)
  50                if (val[i] == ',')
  51                        quirk_count++;
  52
  53        if (quirk_list) {
  54                kfree(quirk_list);
  55                quirk_list = NULL;
  56        }
  57
  58        quirk_list = kcalloc(quirk_count, sizeof(struct quirk_entry),
  59                             GFP_KERNEL);
  60        if (!quirk_list) {
  61                quirk_count = 0;
  62                mutex_unlock(&quirk_mutex);
  63                return -ENOMEM;
  64        }
  65
  66        for (i = 0, p = (char *)val; p && *p;) {
  67                /* Each entry consists of VID:PID:flags */
  68                field = strsep(&p, ":");
  69                if (!field)
  70                        break;
  71
  72                if (kstrtou16(field, 16, &vid))
  73                        break;
  74
  75                field = strsep(&p, ":");
  76                if (!field)
  77                        break;
  78
  79                if (kstrtou16(field, 16, &pid))
  80                        break;
  81
  82                field = strsep(&p, ",");
  83                if (!field || !*field)
  84                        break;
  85
  86                /* Collect the flags */
  87                for (flags = 0; *field; field++) {
  88                        switch (*field) {
  89                        case 'a':
  90                                flags |= USB_QUIRK_STRING_FETCH_255;
  91                                break;
  92                        case 'b':
  93                                flags |= USB_QUIRK_RESET_RESUME;
  94                                break;
  95                        case 'c':
  96                                flags |= USB_QUIRK_NO_SET_INTF;
  97                                break;
  98                        case 'd':
  99                                flags |= USB_QUIRK_CONFIG_INTF_STRINGS;
 100                                break;
 101                        case 'e':
 102                                flags |= USB_QUIRK_RESET;
 103                                break;
 104                        case 'f':
 105                                flags |= USB_QUIRK_HONOR_BNUMINTERFACES;
 106                                break;
 107                        case 'g':
 108                                flags |= USB_QUIRK_DELAY_INIT;
 109                                break;
 110                        case 'h':
 111                                flags |= USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL;
 112                                break;
 113                        case 'i':
 114                                flags |= USB_QUIRK_DEVICE_QUALIFIER;
 115                                break;
 116                        case 'j':
 117                                flags |= USB_QUIRK_IGNORE_REMOTE_WAKEUP;
 118                                break;
 119                        case 'k':
 120                                flags |= USB_QUIRK_NO_LPM;
 121                                break;
 122                        case 'l':
 123                                flags |= USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL;
 124                                break;
 125                        case 'm':
 126                                flags |= USB_QUIRK_DISCONNECT_SUSPEND;
 127                                break;
 128                        case 'n':
 129                                flags |= USB_QUIRK_DELAY_CTRL_MSG;
 130                                break;
 131                        case 'o':
 132                                flags |= USB_QUIRK_HUB_SLOW_RESET;
 133                                break;
 134                        /* Ignore unrecognized flag characters */
 135                        }
 136                }
 137
 138                quirk_list[i++] = (struct quirk_entry)
 139                        { .vid = vid, .pid = pid, .flags = flags };
 140        }
 141
 142        if (i < quirk_count)
 143                quirk_count = i;
 144
 145unlock:
 146        mutex_unlock(&quirk_mutex);
 147
 148        return 0;
 149}
 150
 151static const struct kernel_param_ops quirks_param_ops = {
 152        .set = quirks_param_set,
 153        .get = param_get_string,
 154};
 155
 156static struct kparam_string quirks_param_string = {
 157        .maxlen = sizeof(quirks_param),
 158        .string = quirks_param,
 159};
 160
 161device_param_cb(quirks, &quirks_param_ops, &quirks_param_string, 0644);
 162MODULE_PARM_DESC(quirks, "Add/modify USB quirks by specifying quirks=vendorID:productID:quirks");
 163
 164/* Lists of quirky USB devices, split in device quirks and interface quirks.
 165 * Device quirks are applied at the very beginning of the enumeration process,
 166 * right after reading the device descriptor. They can thus only match on device
 167 * information.
 168 *
 169 * Interface quirks are applied after reading all the configuration descriptors.
 170 * They can match on both device and interface information.
 171 *
 172 * Note that the DELAY_INIT and HONOR_BNUMINTERFACES quirks do not make sense as
 173 * interface quirks, as they only influence the enumeration process which is run
 174 * before processing the interface quirks.
 175 *
 176 * Please keep the lists ordered by:
 177 *      1) Vendor ID
 178 *      2) Product ID
 179 *      3) Class ID
 180 */
 181static const struct usb_device_id usb_quirk_list[] = {
 182        /* CBM - Flash disk */
 183        { USB_DEVICE(0x0204, 0x6025), .driver_info = USB_QUIRK_RESET_RESUME },
 184
 185        /* WORLDE Controller KS49 or Prodipe MIDI 49C USB controller */
 186        { USB_DEVICE(0x0218, 0x0201), .driver_info =
 187                        USB_QUIRK_CONFIG_INTF_STRINGS },
 188
 189        /* WORLDE easy key (easykey.25) MIDI controller  */
 190        { USB_DEVICE(0x0218, 0x0401), .driver_info =
 191                        USB_QUIRK_CONFIG_INTF_STRINGS },
 192
 193        /* HP 5300/5370C scanner */
 194        { USB_DEVICE(0x03f0, 0x0701), .driver_info =
 195                        USB_QUIRK_STRING_FETCH_255 },
 196
 197        /* HP v222w 16GB Mini USB Drive */
 198        { USB_DEVICE(0x03f0, 0x3f40), .driver_info = USB_QUIRK_DELAY_INIT },
 199
 200        /* Creative SB Audigy 2 NX */
 201        { USB_DEVICE(0x041e, 0x3020), .driver_info = USB_QUIRK_RESET_RESUME },
 202
 203        /* USB3503 */
 204        { USB_DEVICE(0x0424, 0x3503), .driver_info = USB_QUIRK_RESET_RESUME },
 205
 206        /* Microsoft Wireless Laser Mouse 6000 Receiver */
 207        { USB_DEVICE(0x045e, 0x00e1), .driver_info = USB_QUIRK_RESET_RESUME },
 208
 209        /* Microsoft LifeCam-VX700 v2.0 */
 210        { USB_DEVICE(0x045e, 0x0770), .driver_info = USB_QUIRK_RESET_RESUME },
 211
 212        /* Cherry Stream G230 2.0 (G85-231) and 3.0 (G85-232) */
 213        { USB_DEVICE(0x046a, 0x0023), .driver_info = USB_QUIRK_RESET_RESUME },
 214
 215        /* Logitech HD Pro Webcams C920, C920-C, C925e and C930e */
 216        { USB_DEVICE(0x046d, 0x082d), .driver_info = USB_QUIRK_DELAY_INIT },
 217        { USB_DEVICE(0x046d, 0x0841), .driver_info = USB_QUIRK_DELAY_INIT },
 218        { USB_DEVICE(0x046d, 0x0843), .driver_info = USB_QUIRK_DELAY_INIT },
 219        { USB_DEVICE(0x046d, 0x085b), .driver_info = USB_QUIRK_DELAY_INIT },
 220
 221        /* Logitech ConferenceCam CC3000e */
 222        { USB_DEVICE(0x046d, 0x0847), .driver_info = USB_QUIRK_DELAY_INIT },
 223        { USB_DEVICE(0x046d, 0x0848), .driver_info = USB_QUIRK_DELAY_INIT },
 224
 225        /* Logitech PTZ Pro Camera */
 226        { USB_DEVICE(0x046d, 0x0853), .driver_info = USB_QUIRK_DELAY_INIT },
 227
 228        /* Logitech Quickcam Fusion */
 229        { USB_DEVICE(0x046d, 0x08c1), .driver_info = USB_QUIRK_RESET_RESUME },
 230
 231        /* Logitech Quickcam Orbit MP */
 232        { USB_DEVICE(0x046d, 0x08c2), .driver_info = USB_QUIRK_RESET_RESUME },
 233
 234        /* Logitech Quickcam Pro for Notebook */
 235        { USB_DEVICE(0x046d, 0x08c3), .driver_info = USB_QUIRK_RESET_RESUME },
 236
 237        /* Logitech Quickcam Pro 5000 */
 238        { USB_DEVICE(0x046d, 0x08c5), .driver_info = USB_QUIRK_RESET_RESUME },
 239
 240        /* Logitech Quickcam OEM Dell Notebook */
 241        { USB_DEVICE(0x046d, 0x08c6), .driver_info = USB_QUIRK_RESET_RESUME },
 242
 243        /* Logitech Quickcam OEM Cisco VT Camera II */
 244        { USB_DEVICE(0x046d, 0x08c7), .driver_info = USB_QUIRK_RESET_RESUME },
 245
 246        /* Logitech Harmony 700-series */
 247        { USB_DEVICE(0x046d, 0xc122), .driver_info = USB_QUIRK_DELAY_INIT },
 248
 249        /* Philips PSC805 audio device */
 250        { USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },
 251
 252        /* Plantronic Audio 655 DSP */
 253        { USB_DEVICE(0x047f, 0xc008), .driver_info = USB_QUIRK_RESET_RESUME },
 254
 255        /* Plantronic Audio 648 USB */
 256        { USB_DEVICE(0x047f, 0xc013), .driver_info = USB_QUIRK_RESET_RESUME },
 257
 258        /* Artisman Watchdog Dongle */
 259        { USB_DEVICE(0x04b4, 0x0526), .driver_info =
 260                        USB_QUIRK_CONFIG_INTF_STRINGS },
 261
 262        /* Microchip Joss Optical infrared touchboard device */
 263        { USB_DEVICE(0x04d8, 0x000c), .driver_info =
 264                        USB_QUIRK_CONFIG_INTF_STRINGS },
 265
 266        /* CarrolTouch 4000U */
 267        { USB_DEVICE(0x04e7, 0x0009), .driver_info = USB_QUIRK_RESET_RESUME },
 268
 269        /* CarrolTouch 4500U */
 270        { USB_DEVICE(0x04e7, 0x0030), .driver_info = USB_QUIRK_RESET_RESUME },
 271
 272        /* Samsung Android phone modem - ID conflict with SPH-I500 */
 273        { USB_DEVICE(0x04e8, 0x6601), .driver_info =
 274                        USB_QUIRK_CONFIG_INTF_STRINGS },
 275
 276        /* Elan Touchscreen */
 277        { USB_DEVICE(0x04f3, 0x0089), .driver_info =
 278                        USB_QUIRK_DEVICE_QUALIFIER },
 279
 280        { USB_DEVICE(0x04f3, 0x009b), .driver_info =
 281                        USB_QUIRK_DEVICE_QUALIFIER },
 282
 283        { USB_DEVICE(0x04f3, 0x010c), .driver_info =
 284                        USB_QUIRK_DEVICE_QUALIFIER },
 285
 286        { USB_DEVICE(0x04f3, 0x0125), .driver_info =
 287                        USB_QUIRK_DEVICE_QUALIFIER },
 288
 289        { USB_DEVICE(0x04f3, 0x016f), .driver_info =
 290                        USB_QUIRK_DEVICE_QUALIFIER },
 291
 292        { USB_DEVICE(0x04f3, 0x0381), .driver_info =
 293                        USB_QUIRK_NO_LPM },
 294
 295        { USB_DEVICE(0x04f3, 0x21b8), .driver_info =
 296                        USB_QUIRK_DEVICE_QUALIFIER },
 297
 298        /* Roland SC-8820 */
 299        { USB_DEVICE(0x0582, 0x0007), .driver_info = USB_QUIRK_RESET_RESUME },
 300
 301        /* Edirol SD-20 */
 302        { USB_DEVICE(0x0582, 0x0027), .driver_info = USB_QUIRK_RESET_RESUME },
 303
 304        /* Alcor Micro Corp. Hub */
 305        { USB_DEVICE(0x058f, 0x9254), .driver_info = USB_QUIRK_RESET_RESUME },
 306
 307        /* appletouch */
 308        { USB_DEVICE(0x05ac, 0x021a), .driver_info = USB_QUIRK_RESET_RESUME },
 309
 310        /* Genesys Logic hub, internally used by KY-688 USB 3.1 Type-C Hub */
 311        { USB_DEVICE(0x05e3, 0x0612), .driver_info = USB_QUIRK_NO_LPM },
 312
 313        /* ELSA MicroLink 56K */
 314        { USB_DEVICE(0x05cc, 0x2267), .driver_info = USB_QUIRK_RESET_RESUME },
 315
 316        /* Genesys Logic hub, internally used by Moshi USB to Ethernet Adapter */
 317        { USB_DEVICE(0x05e3, 0x0616), .driver_info = USB_QUIRK_NO_LPM },
 318
 319        /* Avision AV600U */
 320        { USB_DEVICE(0x0638, 0x0a13), .driver_info =
 321          USB_QUIRK_STRING_FETCH_255 },
 322
 323        /* Saitek Cyborg Gold Joystick */
 324        { USB_DEVICE(0x06a3, 0x0006), .driver_info =
 325                        USB_QUIRK_CONFIG_INTF_STRINGS },
 326
 327        /* Guillemot Webcam Hercules Dualpix Exchange (2nd ID) */
 328        { USB_DEVICE(0x06f8, 0x0804), .driver_info = USB_QUIRK_RESET_RESUME },
 329
 330        /* Guillemot Webcam Hercules Dualpix Exchange*/
 331        { USB_DEVICE(0x06f8, 0x3005), .driver_info = USB_QUIRK_RESET_RESUME },
 332
 333        /* Midiman M-Audio Keystation 88es */
 334        { USB_DEVICE(0x0763, 0x0192), .driver_info = USB_QUIRK_RESET_RESUME },
 335
 336        /* SanDisk Ultra Fit and Ultra Flair */
 337        { USB_DEVICE(0x0781, 0x5583), .driver_info = USB_QUIRK_NO_LPM },
 338        { USB_DEVICE(0x0781, 0x5591), .driver_info = USB_QUIRK_NO_LPM },
 339
 340        /* M-Systems Flash Disk Pioneers */
 341        { USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME },
 342
 343        /* Baum Vario Ultra */
 344        { USB_DEVICE(0x0904, 0x6101), .driver_info =
 345                        USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL },
 346        { USB_DEVICE(0x0904, 0x6102), .driver_info =
 347                        USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL },
 348        { USB_DEVICE(0x0904, 0x6103), .driver_info =
 349                        USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL },
 350
 351        /* Keytouch QWERTY Panel keyboard */
 352        { USB_DEVICE(0x0926, 0x3333), .driver_info =
 353                        USB_QUIRK_CONFIG_INTF_STRINGS },
 354
 355        /* X-Rite/Gretag-Macbeth Eye-One Pro display colorimeter */
 356        { USB_DEVICE(0x0971, 0x2000), .driver_info = USB_QUIRK_NO_SET_INTF },
 357
 358        /* Broadcom BCM92035DGROM BT dongle */
 359        { USB_DEVICE(0x0a5c, 0x2021), .driver_info = USB_QUIRK_RESET_RESUME },
 360
 361        /* MAYA44USB sound device */
 362        { USB_DEVICE(0x0a92, 0x0091), .driver_info = USB_QUIRK_RESET_RESUME },
 363
 364        /* ASUS Base Station(T100) */
 365        { USB_DEVICE(0x0b05, 0x17e0), .driver_info =
 366                        USB_QUIRK_IGNORE_REMOTE_WAKEUP },
 367
 368        /* Action Semiconductor flash disk */
 369        { USB_DEVICE(0x10d6, 0x2200), .driver_info =
 370                        USB_QUIRK_STRING_FETCH_255 },
 371
 372        /* Huawei 4G LTE module */
 373        { USB_DEVICE(0x12d1, 0x15bb), .driver_info =
 374                        USB_QUIRK_DISCONNECT_SUSPEND },
 375        { USB_DEVICE(0x12d1, 0x15c3), .driver_info =
 376                        USB_QUIRK_DISCONNECT_SUSPEND },
 377
 378        /* SKYMEDI USB_DRIVE */
 379        { USB_DEVICE(0x1516, 0x8628), .driver_info = USB_QUIRK_RESET_RESUME },
 380
 381        /* Razer - Razer Blade Keyboard */
 382        { USB_DEVICE(0x1532, 0x0116), .driver_info =
 383                        USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
 384
 385        /* BUILDWIN Photo Frame */
 386        { USB_DEVICE(0x1908, 0x1315), .driver_info =
 387                        USB_QUIRK_HONOR_BNUMINTERFACES },
 388
 389        /* Protocol and OTG Electrical Test Device */
 390        { USB_DEVICE(0x1a0a, 0x0200), .driver_info =
 391                        USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL },
 392
 393        /* Terminus Technology Inc. Hub */
 394        { USB_DEVICE(0x1a40, 0x0101), .driver_info = USB_QUIRK_HUB_SLOW_RESET },
 395
 396        /* Corsair K70 RGB */
 397        { USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT |
 398          USB_QUIRK_DELAY_CTRL_MSG },
 399
 400        /* Corsair Strafe */
 401        { USB_DEVICE(0x1b1c, 0x1b15), .driver_info = USB_QUIRK_DELAY_INIT |
 402          USB_QUIRK_DELAY_CTRL_MSG },
 403
 404        /* Corsair Strafe RGB */
 405        { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT |
 406          USB_QUIRK_DELAY_CTRL_MSG },
 407
 408        /* Corsair K70 LUX RGB */
 409        { USB_DEVICE(0x1b1c, 0x1b33), .driver_info = USB_QUIRK_DELAY_INIT },
 410
 411        /* Corsair K70 LUX */
 412        { USB_DEVICE(0x1b1c, 0x1b36), .driver_info = USB_QUIRK_DELAY_INIT },
 413
 414        /* MIDI keyboard WORLDE MINI */
 415        { USB_DEVICE(0x1c75, 0x0204), .driver_info =
 416                        USB_QUIRK_CONFIG_INTF_STRINGS },
 417
 418        /* Acer C120 LED Projector */
 419        { USB_DEVICE(0x1de1, 0xc102), .driver_info = USB_QUIRK_NO_LPM },
 420
 421        /* Blackmagic Design Intensity Shuttle */
 422        { USB_DEVICE(0x1edb, 0xbd3b), .driver_info = USB_QUIRK_NO_LPM },
 423
 424        /* Blackmagic Design UltraStudio SDI */
 425        { USB_DEVICE(0x1edb, 0xbd4f), .driver_info = USB_QUIRK_NO_LPM },
 426
 427        /* Hauppauge HVR-950q */
 428        { USB_DEVICE(0x2040, 0x7200), .driver_info =
 429                        USB_QUIRK_CONFIG_INTF_STRINGS },
 430
 431        /* Raydium Touchscreen */
 432        { USB_DEVICE(0x2386, 0x3114), .driver_info = USB_QUIRK_NO_LPM },
 433
 434        { USB_DEVICE(0x2386, 0x3119), .driver_info = USB_QUIRK_NO_LPM },
 435
 436        /* DJI CineSSD */
 437        { USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM },
 438
 439        /* INTEL VALUE SSD */
 440        { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
 441
 442        { }  /* terminating entry must be last */
 443};
 444
 445static const struct usb_device_id usb_interface_quirk_list[] = {
 446        /* Logitech UVC Cameras */
 447        { USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0),
 448          .driver_info = USB_QUIRK_RESET_RESUME },
 449
 450        { }  /* terminating entry must be last */
 451};
 452
 453static const struct usb_device_id usb_amd_resume_quirk_list[] = {
 454        /* Lenovo Mouse with Pixart controller */
 455        { USB_DEVICE(0x17ef, 0x602e), .driver_info = USB_QUIRK_RESET_RESUME },
 456
 457        /* Pixart Mouse */
 458        { USB_DEVICE(0x093a, 0x2500), .driver_info = USB_QUIRK_RESET_RESUME },
 459        { USB_DEVICE(0x093a, 0x2510), .driver_info = USB_QUIRK_RESET_RESUME },
 460        { USB_DEVICE(0x093a, 0x2521), .driver_info = USB_QUIRK_RESET_RESUME },
 461        { USB_DEVICE(0x03f0, 0x2b4a), .driver_info = USB_QUIRK_RESET_RESUME },
 462
 463        /* Logitech Optical Mouse M90/M100 */
 464        { USB_DEVICE(0x046d, 0xc05a), .driver_info = USB_QUIRK_RESET_RESUME },
 465
 466        { }  /* terminating entry must be last */
 467};
 468
 469static bool usb_match_any_interface(struct usb_device *udev,
 470                                    const struct usb_device_id *id)
 471{
 472        unsigned int i;
 473
 474        for (i = 0; i < udev->descriptor.bNumConfigurations; ++i) {
 475                struct usb_host_config *cfg = &udev->config[i];
 476                unsigned int j;
 477
 478                for (j = 0; j < cfg->desc.bNumInterfaces; ++j) {
 479                        struct usb_interface_cache *cache;
 480                        struct usb_host_interface *intf;
 481
 482                        cache = cfg->intf_cache[j];
 483                        if (cache->num_altsetting == 0)
 484                                continue;
 485
 486                        intf = &cache->altsetting[0];
 487                        if (usb_match_one_id_intf(udev, intf, id))
 488                                return true;
 489                }
 490        }
 491
 492        return false;
 493}
 494
 495static int usb_amd_resume_quirk(struct usb_device *udev)
 496{
 497        struct usb_hcd *hcd;
 498
 499        hcd = bus_to_hcd(udev->bus);
 500        /* The device should be attached directly to root hub */
 501        if (udev->level == 1 && hcd->amd_resume_bug == 1)
 502                return 1;
 503
 504        return 0;
 505}
 506
 507static u32 usb_detect_static_quirks(struct usb_device *udev,
 508                                    const struct usb_device_id *id)
 509{
 510        u32 quirks = 0;
 511
 512        for (; id->match_flags; id++) {
 513                if (!usb_match_device(udev, id))
 514                        continue;
 515
 516                if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_INFO) &&
 517                    !usb_match_any_interface(udev, id))
 518                        continue;
 519
 520                quirks |= (u32)(id->driver_info);
 521        }
 522
 523        return quirks;
 524}
 525
 526static u32 usb_detect_dynamic_quirks(struct usb_device *udev)
 527{
 528        u16 vid = le16_to_cpu(udev->descriptor.idVendor);
 529        u16 pid = le16_to_cpu(udev->descriptor.idProduct);
 530        int i, flags = 0;
 531
 532        mutex_lock(&quirk_mutex);
 533
 534        for (i = 0; i < quirk_count; i++) {
 535                if (vid == quirk_list[i].vid && pid == quirk_list[i].pid) {
 536                        flags = quirk_list[i].flags;
 537                        break;
 538                }
 539        }
 540
 541        mutex_unlock(&quirk_mutex);
 542
 543        return flags;
 544}
 545
 546/*
 547 * Detect any quirks the device has, and do any housekeeping for it if needed.
 548 */
 549void usb_detect_quirks(struct usb_device *udev)
 550{
 551        udev->quirks = usb_detect_static_quirks(udev, usb_quirk_list);
 552
 553        /*
 554         * Pixart-based mice would trigger remote wakeup issue on AMD
 555         * Yangtze chipset, so set them as RESET_RESUME flag.
 556         */
 557        if (usb_amd_resume_quirk(udev))
 558                udev->quirks |= usb_detect_static_quirks(udev,
 559                                usb_amd_resume_quirk_list);
 560
 561        udev->quirks ^= usb_detect_dynamic_quirks(udev);
 562
 563        if (udev->quirks)
 564                dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
 565                        udev->quirks);
 566
 567#ifdef CONFIG_USB_DEFAULT_PERSIST
 568        if (!(udev->quirks & USB_QUIRK_RESET))
 569                udev->persist_enabled = 1;
 570#else
 571        /* Hubs are automatically enabled for USB-PERSIST */
 572        if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
 573                udev->persist_enabled = 1;
 574#endif  /* CONFIG_USB_DEFAULT_PERSIST */
 575}
 576
 577void usb_detect_interface_quirks(struct usb_device *udev)
 578{
 579        u32 quirks;
 580
 581        quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list);
 582        if (quirks == 0)
 583                return;
 584
 585        dev_dbg(&udev->dev, "USB interface quirks for this device: %x\n",
 586                quirks);
 587        udev->quirks |= quirks;
 588}
 589
 590void usb_release_quirk_list(void)
 591{
 592        mutex_lock(&quirk_mutex);
 593        kfree(quirk_list);
 594        quirk_list = NULL;
 595        mutex_unlock(&quirk_mutex);
 596}
 597