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 /* M-Systems Flash Disk Pioneers */ 337 { USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME }, 338 339 /* Baum Vario Ultra */ 340 { USB_DEVICE(0x0904, 0x6101), .driver_info = 341 USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL }, 342 { USB_DEVICE(0x0904, 0x6102), .driver_info = 343 USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL }, 344 { USB_DEVICE(0x0904, 0x6103), .driver_info = 345 USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL }, 346 347 /* Keytouch QWERTY Panel keyboard */ 348 { USB_DEVICE(0x0926, 0x3333), .driver_info = 349 USB_QUIRK_CONFIG_INTF_STRINGS }, 350 351 /* X-Rite/Gretag-Macbeth Eye-One Pro display colorimeter */ 352 { USB_DEVICE(0x0971, 0x2000), .driver_info = USB_QUIRK_NO_SET_INTF }, 353 354 /* Broadcom BCM92035DGROM BT dongle */ 355 { USB_DEVICE(0x0a5c, 0x2021), .driver_info = USB_QUIRK_RESET_RESUME }, 356 357 /* MAYA44USB sound device */ 358 { USB_DEVICE(0x0a92, 0x0091), .driver_info = USB_QUIRK_RESET_RESUME }, 359 360 /* ASUS Base Station(T100) */ 361 { USB_DEVICE(0x0b05, 0x17e0), .driver_info = 362 USB_QUIRK_IGNORE_REMOTE_WAKEUP }, 363 364 /* Action Semiconductor flash disk */ 365 { USB_DEVICE(0x10d6, 0x2200), .driver_info = 366 USB_QUIRK_STRING_FETCH_255 }, 367 368 /* Huawei 4G LTE module */ 369 { USB_DEVICE(0x12d1, 0x15bb), .driver_info = 370 USB_QUIRK_DISCONNECT_SUSPEND }, 371 { USB_DEVICE(0x12d1, 0x15c3), .driver_info = 372 USB_QUIRK_DISCONNECT_SUSPEND }, 373 374 /* SKYMEDI USB_DRIVE */ 375 { USB_DEVICE(0x1516, 0x8628), .driver_info = USB_QUIRK_RESET_RESUME }, 376 377 /* Razer - Razer Blade Keyboard */ 378 { USB_DEVICE(0x1532, 0x0116), .driver_info = 379 USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL }, 380 381 /* BUILDWIN Photo Frame */ 382 { USB_DEVICE(0x1908, 0x1315), .driver_info = 383 USB_QUIRK_HONOR_BNUMINTERFACES }, 384 385 /* Protocol and OTG Electrical Test Device */ 386 { USB_DEVICE(0x1a0a, 0x0200), .driver_info = 387 USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL }, 388 389 /* Terminus Technology Inc. Hub */ 390 { USB_DEVICE(0x1a40, 0x0101), .driver_info = USB_QUIRK_HUB_SLOW_RESET }, 391 392 /* Corsair K70 RGB */ 393 { USB_DEVICE(0x1b1c, 0x1b13), .driver_info = USB_QUIRK_DELAY_INIT }, 394 395 /* Corsair Strafe */ 396 { USB_DEVICE(0x1b1c, 0x1b15), .driver_info = USB_QUIRK_DELAY_INIT | 397 USB_QUIRK_DELAY_CTRL_MSG }, 398 399 /* Corsair Strafe RGB */ 400 { USB_DEVICE(0x1b1c, 0x1b20), .driver_info = USB_QUIRK_DELAY_INIT | 401 USB_QUIRK_DELAY_CTRL_MSG }, 402 403 /* Corsair K70 LUX RGB */ 404 { USB_DEVICE(0x1b1c, 0x1b33), .driver_info = USB_QUIRK_DELAY_INIT }, 405 406 /* Corsair K70 LUX */ 407 { USB_DEVICE(0x1b1c, 0x1b36), .driver_info = USB_QUIRK_DELAY_INIT }, 408 409 /* MIDI keyboard WORLDE MINI */ 410 { USB_DEVICE(0x1c75, 0x0204), .driver_info = 411 USB_QUIRK_CONFIG_INTF_STRINGS }, 412 413 /* Acer C120 LED Projector */ 414 { USB_DEVICE(0x1de1, 0xc102), .driver_info = USB_QUIRK_NO_LPM }, 415 416 /* Blackmagic Design Intensity Shuttle */ 417 { USB_DEVICE(0x1edb, 0xbd3b), .driver_info = USB_QUIRK_NO_LPM }, 418 419 /* Blackmagic Design UltraStudio SDI */ 420 { USB_DEVICE(0x1edb, 0xbd4f), .driver_info = USB_QUIRK_NO_LPM }, 421 422 /* Hauppauge HVR-950q */ 423 { USB_DEVICE(0x2040, 0x7200), .driver_info = 424 USB_QUIRK_CONFIG_INTF_STRINGS }, 425 426 /* Raydium Touchscreen */ 427 { USB_DEVICE(0x2386, 0x3114), .driver_info = USB_QUIRK_NO_LPM }, 428 429 { USB_DEVICE(0x2386, 0x3119), .driver_info = USB_QUIRK_NO_LPM }, 430 431 /* DJI CineSSD */ 432 { USB_DEVICE(0x2ca3, 0x0031), .driver_info = USB_QUIRK_NO_LPM }, 433 434 /* INTEL VALUE SSD */ 435 { USB_DEVICE(0x8086, 0xf1a5), .driver_info = USB_QUIRK_RESET_RESUME }, 436 437 { } /* terminating entry must be last */ 438 }; 439 440 static const struct usb_device_id usb_interface_quirk_list[] = { 441 /* Logitech UVC Cameras */ 442 { USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0), 443 .driver_info = USB_QUIRK_RESET_RESUME }, 444 445 { } /* terminating entry must be last */ 446 }; 447 448 static const struct usb_device_id usb_amd_resume_quirk_list[] = { 449 /* Lenovo Mouse with Pixart controller */ 450 { USB_DEVICE(0x17ef, 0x602e), .driver_info = USB_QUIRK_RESET_RESUME }, 451 452 /* Pixart Mouse */ 453 { USB_DEVICE(0x093a, 0x2500), .driver_info = USB_QUIRK_RESET_RESUME }, 454 { USB_DEVICE(0x093a, 0x2510), .driver_info = USB_QUIRK_RESET_RESUME }, 455 { USB_DEVICE(0x093a, 0x2521), .driver_info = USB_QUIRK_RESET_RESUME }, 456 { USB_DEVICE(0x03f0, 0x2b4a), .driver_info = USB_QUIRK_RESET_RESUME }, 457 458 /* Logitech Optical Mouse M90/M100 */ 459 { USB_DEVICE(0x046d, 0xc05a), .driver_info = USB_QUIRK_RESET_RESUME }, 460 461 { } /* terminating entry must be last */ 462 }; 463 464 static bool usb_match_any_interface(struct usb_device *udev, 465 const struct usb_device_id *id) 466 { 467 unsigned int i; 468 469 for (i = 0; i < udev->descriptor.bNumConfigurations; ++i) { 470 struct usb_host_config *cfg = &udev->config[i]; 471 unsigned int j; 472 473 for (j = 0; j < cfg->desc.bNumInterfaces; ++j) { 474 struct usb_interface_cache *cache; 475 struct usb_host_interface *intf; 476 477 cache = cfg->intf_cache[j]; 478 if (cache->num_altsetting == 0) 479 continue; 480 481 intf = &cache->altsetting[0]; 482 if (usb_match_one_id_intf(udev, intf, id)) 483 return true; 484 } 485 } 486 487 return false; 488 } 489 490 static int usb_amd_resume_quirk(struct usb_device *udev) 491 { 492 struct usb_hcd *hcd; 493 494 hcd = bus_to_hcd(udev->bus); 495 /* The device should be attached directly to root hub */ 496 if (udev->level == 1 && hcd->amd_resume_bug == 1) 497 return 1; 498 499 return 0; 500 } 501 502 static u32 usb_detect_static_quirks(struct usb_device *udev, 503 const struct usb_device_id *id) 504 { 505 u32 quirks = 0; 506 507 for (; id->match_flags; id++) { 508 if (!usb_match_device(udev, id)) 509 continue; 510 511 if ((id->match_flags & USB_DEVICE_ID_MATCH_INT_INFO) && 512 !usb_match_any_interface(udev, id)) 513 continue; 514 515 quirks |= (u32)(id->driver_info); 516 } 517 518 return quirks; 519 } 520 521 static u32 usb_detect_dynamic_quirks(struct usb_device *udev) 522 { 523 u16 vid = le16_to_cpu(udev->descriptor.idVendor); 524 u16 pid = le16_to_cpu(udev->descriptor.idProduct); 525 int i, flags = 0; 526 527 mutex_lock(&quirk_mutex); 528 529 for (i = 0; i < quirk_count; i++) { 530 if (vid == quirk_list[i].vid && pid == quirk_list[i].pid) { 531 flags = quirk_list[i].flags; 532 break; 533 } 534 } 535 536 mutex_unlock(&quirk_mutex); 537 538 return flags; 539 } 540 541 /* 542 * Detect any quirks the device has, and do any housekeeping for it if needed. 543 */ 544 void usb_detect_quirks(struct usb_device *udev) 545 { 546 udev->quirks = usb_detect_static_quirks(udev, usb_quirk_list); 547 548 /* 549 * Pixart-based mice would trigger remote wakeup issue on AMD 550 * Yangtze chipset, so set them as RESET_RESUME flag. 551 */ 552 if (usb_amd_resume_quirk(udev)) 553 udev->quirks |= usb_detect_static_quirks(udev, 554 usb_amd_resume_quirk_list); 555 556 udev->quirks ^= usb_detect_dynamic_quirks(udev); 557 558 if (udev->quirks) 559 dev_dbg(&udev->dev, "USB quirks for this device: %x\n", 560 udev->quirks); 561 562 #ifdef CONFIG_USB_DEFAULT_PERSIST 563 if (!(udev->quirks & USB_QUIRK_RESET)) 564 udev->persist_enabled = 1; 565 #else 566 /* Hubs are automatically enabled for USB-PERSIST */ 567 if (udev->descriptor.bDeviceClass == USB_CLASS_HUB) 568 udev->persist_enabled = 1; 569 #endif /* CONFIG_USB_DEFAULT_PERSIST */ 570 } 571 572 void usb_detect_interface_quirks(struct usb_device *udev) 573 { 574 u32 quirks; 575 576 quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list); 577 if (quirks == 0) 578 return; 579 580 dev_dbg(&udev->dev, "USB interface quirks for this device: %x\n", 581 quirks); 582 udev->quirks |= quirks; 583 } 584 585 void usb_release_quirk_list(void) 586 { 587 mutex_lock(&quirk_mutex); 588 kfree(quirk_list); 589 quirk_list = NULL; 590 mutex_unlock(&quirk_mutex); 591 } 592