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
  15 struct quirk_entry {
  16         u16 vid;
  17         u16 pid;
  18         u32 flags;
  19 };
  20
  21 static DEFINE_MUTEX(quirk_mutex);
  22
  23 static struct quirk_entry *quirk_list;
  24 static unsigned int quirk_count;
  25
  26 static char quirks_param[128];
  27
  28 static 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
 145 unlock:
 146         mutex_unlock(&quirk_mutex);
 147
 148         return 0;
 149 }
 150
 151 static const struct kernel_param_ops quirks_param_ops = {
 152         .set = quirks_param_set,
 153         .get = param_get_string,
 154 };
 155
 156 static struct kparam_string quirks_param_string = {
 157         .maxlen = sizeof(quirks_param),
 158         .string = quirks_param,
 159 };
 160
 161 device_param_cb(quirks, &quirks_param_ops, &quirks_param_string, 0644);
 162 MODULE_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  */
 181 static 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
 399         /* Corsair Strafe */
 400         { USB_DEVICE(0x1b1c, 0x1b15), .driver_info = USB_QUIRK_DELAY_INIT |
 401           USB_QUIRK_DELAY_CTRL_MSG },
 402
 403         /* Corsair Strafe RGB */
 404         { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT |
 405           USB_QUIRK_DELAY_CTRL_MSG },
 406
 407         /* Corsair K70 LUX RGB */
 408         { USB_DEVICE(0x1b1c, 0x1b33), .driver_info = USB_QUIRK_DELAY_INIT },
 409
 410         /* Corsair K70 LUX */
 411         { USB_DEVICE(0x1b1c, 0x1b36), .driver_info = USB_QUIRK_DELAY_INIT },
 412
 413         /* MIDI keyboard WORLDE MINI */
 414         { USB_DEVICE(0x1c75, 0x0204), .driver_info =
 415                         USB_QUIRK_CONFIG_INTF_STRINGS },
 416
 417         /* Acer C120 LED Projector */
 418         { USB_DEVICE(0x1de1, 0xc102), .driver_info = USB_QUIRK_NO_LPM },
 419
 420         /* Blackmagic Design Intensity Shuttle */
 421         { USB_DEVICE(0x1edb, 0xbd3b), .driver_info = USB_QUIRK_NO_LPM },
 422
 423         /* Blackmagic Design UltraStudio SDI */
 424         { USB_DEVICE(0x1edb, 0xbd4f), .driver_info = USB_QUIRK_NO_LPM },
 425
 426         /* Hauppauge HVR-950q */
 427         { USB_DEVICE(0x2040, 0x7200), .driver_info =
 428                         USB_QUIRK_CONFIG_INTF_STRINGS },
 429
 430         /* Raydium Touchscreen */
 431         { USB_DEVICE(0x2386, 0x3114), .driver_info = USB_QUIRK_NO_LPM },
 432
 433         { USB_DEVICE(0x2386, 0x3119), .driver_info = USB_QUIRK_NO_LPM },
 434
 435         /* DJI CineSSD */
 436         { USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM },
 437
 438         /* INTEL VALUE SSD */
 439         { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME },
 440
 441         { }  /* terminating entry must be last */
 442 };
 443
 444 static const struct usb_device_id usb_interface_quirk_list[] = {
 445         /* Logitech UVC Cameras */
 446         { USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0),
 447           .driver_info = USB_QUIRK_RESET_RESUME },
 448
 449         { }  /* terminating entry must be last */
 450 };
 451
 452 static const struct usb_device_id usb_amd_resume_quirk_list[] = {
 453         /* Lenovo Mouse with Pixart controller */
 454         { USB_DEVICE(0x17ef, 0x602e), .driver_info = USB_QUIRK_RESET_RESUME },
 455
 456         /* Pixart Mouse */
 457         { USB_DEVICE(0x093a, 0x2500), .driver_info = USB_QUIRK_RESET_RESUME },
 458         { USB_DEVICE(0x093a, 0x2510), .driver_info = USB_QUIRK_RESET_RESUME },
 459         { USB_DEVICE(0x093a, 0x2521), .driver_info = USB_QUIRK_RESET_RESUME },
 460         { USB_DEVICE(0x03f0, 0x2b4a), .driver_info = USB_QUIRK_RESET_RESUME },
 461
 462         /* Logitech Optical Mouse M90/M100 */
 463         { USB_DEVICE(0x046d, 0xc05a), .driver_info = USB_QUIRK_RESET_RESUME },
 464
 465         { }  /* terminating entry must be last */
 466 };
 467
 468 static bool usb_match_any_interface(struct usb_device *udev,
 469                                     const struct usb_device_id *id)
 470 {
 471         unsigned int i;
 472
 473         for (i = 0; i < udev->descriptor.bNumConfigurations; ++i) {
 474                 struct usb_host_config *cfg = &udev->config[i];
 475                 unsigned int j;
 476
 477                 for (j = 0; j < cfg->desc.bNumInterfaces; ++j) {
 478                         struct usb_interface_cache *cache;
 479                         struct usb_host_interface *intf;
 480
 481                         cache = cfg->intf_cache[j];
 482                         if (cache->num_altsetting == 0)
 483                                 continue;
 484
 485                         intf = &cache->altsetting[0];
 486                         if (usb_match_one_id_intf(udev, intf, id))
 487                                 return true;
 488                 }
 489         }
 490
 491         return false;
 492 }
 493
 494 static int usb_amd_resume_quirk(struct usb_device *udev)
 495 {
 496         struct usb_hcd *hcd;
 497
 498         hcd = bus_to_hcd(udev->bus);
 499         /* The device should be attached directly to root hub */
 500         if (udev->level == 1 && hcd->amd_resume_bug == 1)
 501                 return 1;
 502
 503         return 0;
 504 }
 505
 506 static u32 usb_detect_static_quirks(struct usb_device *udev,
 507                                     const struct usb_device_id *id)
 508 {
 509         u32 quirks = 0;
 510
 511         for (; id->match_flags; id++) {
 512                 if (!usb_match_device(udev, id))
 513                         continue;
 514
 515                 if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_INFO) &&
 516                     !usb_match_any_interface(udev, id))
 517                         continue;
 518
 519                 quirks |= (u32)(id->driver_info);
 520         }
 521
 522         return quirks;
 523 }
 524
 525 static u32 usb_detect_dynamic_quirks(struct usb_device *udev)
 526 {
 527         u16 vid = le16_to_cpu(udev->descriptor.idVendor);
 528         u16 pid = le16_to_cpu(udev->descriptor.idProduct);
 529         int i, flags = 0;
 530
 531         mutex_lock(&quirk_mutex);
 532
 533         for (i = 0; i < quirk_count; i++) {
 534                 if (vid == quirk_list[i].vid && pid == quirk_list[i].pid) {
 535                         flags = quirk_list[i].flags;
 536                         break;
 537                 }
 538         }
 539
 540         mutex_unlock(&quirk_mutex);
 541
 542         return flags;
 543 }
 544
 545 /*
 546  * Detect any quirks the device has, and do any housekeeping for it if needed.
 547  */
 548 void usb_detect_quirks(struct usb_device *udev)
 549 {
 550         udev->quirks = usb_detect_static_quirks(udev, usb_quirk_list);
 551
 552         /*
 553          * Pixart-based mice would trigger remote wakeup issue on AMD
 554          * Yangtze chipset, so set them as RESET_RESUME flag.
 555          */
 556         if (usb_amd_resume_quirk(udev))
 557                 udev->quirks |= usb_detect_static_quirks(udev,
 558                                 usb_amd_resume_quirk_list);
 559
 560         udev->quirks ^= usb_detect_dynamic_quirks(udev);
 561
 562         if (udev->quirks)
 563                 dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
 564                         udev->quirks);
 565
 566 #ifdef CONFIG_USB_DEFAULT_PERSIST
 567         if (!(udev->quirks & USB_QUIRK_RESET))
 568                 udev->persist_enabled = 1;
 569 #else
 570         /* Hubs are automatically enabled for USB-PERSIST */
 571         if (udev->descriptor.bDeviceClass == USB_CLASS_HUB)
 572                 udev->persist_enabled = 1;
 573 #endif  /* CONFIG_USB_DEFAULT_PERSIST */
 574 }
 575
 576 void usb_detect_interface_quirks(struct usb_device *udev)
 577 {
 578         u32 quirks;
 579
 580         quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list);
 581         if (quirks == 0)
 582                 return;
 583
 584         dev_dbg(&udev->dev, "USB interface quirks for this device: %x\n",
 585                 quirks);
 586         udev->quirks |= quirks;
 587 }
 588
 589 void usb_release_quirk_list(void)
 590 {
 591         mutex_lock(&quirk_mutex);
 592         kfree(quirk_list);
 593         quirk_list = NULL;
 594         mutex_unlock(&quirk_mutex);
 595 }