sys/dev/usb/quirk/usb_quirk.c

   1 /* $FreeBSD$ */
   2 /*-
   3  * Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.
   4  * Copyright (c) 1998 Lennart Augustsson. All rights reserved.
   5  * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/stdint.h>
  30 #include <sys/stddef.h>
  31 #include <sys/param.h>
  32 #include <sys/queue.h>
  33 #include <sys/types.h>
  34 #include <sys/systm.h>
  35 #include <sys/kernel.h>
  36 #include <sys/bus.h>
  37 #include <sys/linker_set.h>
  38 #include <sys/module.h>
  39 #include <sys/lock.h>
  40 #include <sys/mutex.h>
  41 #include <sys/condvar.h>
  42 #include <sys/sysctl.h>
  43 #include <sys/sx.h>
  44 #include <sys/unistd.h>
  45 #include <sys/callout.h>
  46 #include <sys/malloc.h>
  47 #include <sys/priv.h>
  48
  49 #include <dev/usb/usb.h>
  50 #include <dev/usb/usb_ioctl.h>
  51 #include <dev/usb/usbdi.h>
  52 #include "usbdevs.h"
  53
  54 #define USB_DEBUG_VAR usb_debug
  55 #include <dev/usb/usb_debug.h>
  56 #include <dev/usb/usb_dynamic.h>
  57
  58 #include <dev/usb/quirk/usb_quirk.h>
  59
  60 MODULE_DEPEND(usb_quirk, usb, 1, 1, 1);
  61 MODULE_VERSION(usb_quirk, 1);
  62
  63 /*
  64  * The following macro adds one or more quirks for a USB device:
  65  */
  66 #define USB_QUIRK_ENTRY(v,p,l,h,...) \
  67   .vid = (v), .pid = (p), .lo_rev = (l), .hi_rev = (h), .quirks = { __VA_ARGS__ }
  68
  69 #define USB_DEV_QUIRKS_MAX 128
  70 #define USB_SUB_QUIRKS_MAX 8
  71
  72 struct usb_quirk_entry {
  73         uint16_t vid;
  74         uint16_t pid;
  75         uint16_t lo_rev;
  76         uint16_t hi_rev;
  77         uint16_t quirks[USB_SUB_QUIRKS_MAX];
  78 };
  79
  80 static struct mtx usb_quirk_mtx;
  81
  82 static struct usb_quirk_entry usb_quirks[USB_DEV_QUIRKS_MAX] = {
  83         {USB_QUIRK_ENTRY(USB_VENDOR_ASUS, USB_PRODUCT_ASUS_LCM, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
  84         {USB_QUIRK_ENTRY(USB_VENDOR_INSIDEOUT, USB_PRODUCT_INSIDEOUT_EDGEPORT4, 0x094, 0x094, UQ_SWAP_UNICODE, UQ_NONE)},
  85         {USB_QUIRK_ENTRY(USB_VENDOR_DALLAS, USB_PRODUCT_DALLAS_J6502, 0x0a2, 0x0a2, UQ_BAD_ADC, UQ_NONE)},
  86         {USB_QUIRK_ENTRY(USB_VENDOR_DALLAS, USB_PRODUCT_DALLAS_J6502, 0x0a2, 0x0a2, UQ_AU_NO_XU, UQ_NONE)},
  87         {USB_QUIRK_ENTRY(USB_VENDOR_ALTEC, USB_PRODUCT_ALTEC_ADA70, 0x103, 0x103, UQ_BAD_ADC, UQ_NONE)},
  88         {USB_QUIRK_ENTRY(USB_VENDOR_ALTEC, USB_PRODUCT_ALTEC_ASC495, 0x000, 0x000, UQ_BAD_AUDIO, UQ_NONE)},
  89         {USB_QUIRK_ENTRY(USB_VENDOR_QTRONIX, USB_PRODUCT_QTRONIX_980N, 0x110, 0x110, UQ_SPUR_BUT_UP, UQ_NONE)},
  90         {USB_QUIRK_ENTRY(USB_VENDOR_ALCOR2, USB_PRODUCT_ALCOR2_KBD_HUB, 0x001, 0x001, UQ_SPUR_BUT_UP, UQ_NONE)},
  91         {USB_QUIRK_ENTRY(USB_VENDOR_MCT, USB_PRODUCT_MCT_HUB0100, 0x102, 0x102, UQ_BUS_POWERED, UQ_NONE)},
  92         {USB_QUIRK_ENTRY(USB_VENDOR_MCT, USB_PRODUCT_MCT_USB232, 0x102, 0x102, UQ_BUS_POWERED, UQ_NONE)},
  93         {USB_QUIRK_ENTRY(USB_VENDOR_TI, USB_PRODUCT_TI_UTUSB41, 0x110, 0x110, UQ_POWER_CLAIM, UQ_NONE)},
  94         {USB_QUIRK_ENTRY(USB_VENDOR_TELEX, USB_PRODUCT_TELEX_MIC1, 0x009, 0x009, UQ_AU_NO_FRAC, UQ_NONE)},
  95         {USB_QUIRK_ENTRY(USB_VENDOR_SILICONPORTALS, USB_PRODUCT_SILICONPORTALS_YAPPHONE, 0x100, 0x100, UQ_AU_INP_ASYNC, UQ_NONE)},
  96         {USB_QUIRK_ENTRY(USB_VENDOR_LOGITECH, USB_PRODUCT_LOGITECH_UN53B, 0x0000, 0xFFFF, UQ_NO_STRINGS, UQ_NONE)},
  97
  98         /*
  99          * XXX The following quirks should have a more specific revision
 100          * number:
 101          */
 102         {USB_QUIRK_ENTRY(USB_VENDOR_HP, USB_PRODUCT_HP_895C, 0x0000, 0xFFFF, UQ_BROKEN_BIDIR, UQ_NONE)},
 103         {USB_QUIRK_ENTRY(USB_VENDOR_HP, USB_PRODUCT_HP_880C, 0x0000, 0xFFFF, UQ_BROKEN_BIDIR, UQ_NONE)},
 104         {USB_QUIRK_ENTRY(USB_VENDOR_HP, USB_PRODUCT_HP_815C, 0x0000, 0xFFFF, UQ_BROKEN_BIDIR, UQ_NONE)},
 105         {USB_QUIRK_ENTRY(USB_VENDOR_HP, USB_PRODUCT_HP_810C, 0x0000, 0xFFFF, UQ_BROKEN_BIDIR, UQ_NONE)},
 106         {USB_QUIRK_ENTRY(USB_VENDOR_HP, USB_PRODUCT_HP_830C, 0x0000, 0xFFFF, UQ_BROKEN_BIDIR, UQ_NONE)},
 107         {USB_QUIRK_ENTRY(USB_VENDOR_HP, USB_PRODUCT_HP_1220C, 0x0000, 0xFFFF, UQ_BROKEN_BIDIR, UQ_NONE)},
 108         {USB_QUIRK_ENTRY(USB_VENDOR_XEROX, USB_PRODUCT_XEROX_WCM15, 0x0000, 0xFFFF, UQ_BROKEN_BIDIR, UQ_NONE)},
 109         /* Devices which should be ignored by uhid */
 110         {USB_QUIRK_ENTRY(USB_VENDOR_APC, USB_PRODUCT_APC_UPS, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 111         {USB_QUIRK_ENTRY(USB_VENDOR_BELKIN, USB_PRODUCT_BELKIN_F6C550AVR, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 112         {USB_QUIRK_ENTRY(USB_VENDOR_CYBERPOWER, USB_PRODUCT_CYBERPOWER_1500CAVRLCD, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 113         {USB_QUIRK_ENTRY(USB_VENDOR_DELORME, USB_PRODUCT_DELORME_EARTHMATE, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 114         {USB_QUIRK_ENTRY(USB_VENDOR_ITUNERNET, USB_PRODUCT_ITUNERNET_USBLCD2X20, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 115         {USB_QUIRK_ENTRY(USB_VENDOR_ITUNERNET, USB_PRODUCT_ITUNERNET_USBLCD4X20, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 116         {USB_QUIRK_ENTRY(USB_VENDOR_MGE, USB_PRODUCT_MGE_UPS1, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 117         {USB_QUIRK_ENTRY(USB_VENDOR_MGE, USB_PRODUCT_MGE_UPS2, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 118         {USB_QUIRK_ENTRY(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 119         {USB_QUIRK_ENTRY(USB_VENDOR_APPLE, USB_PRODUCT_APPLE_IPHONE_3G, 0x0000, 0xFFFF, UQ_HID_IGNORE, UQ_NONE)},
 120         /* Devices which should be ignored by both ukbd and uhid */
 121         {USB_QUIRK_ENTRY(USB_VENDOR_CYPRESS, USB_PRODUCT_CYPRESS_WISPY1A, 0x0000, 0xFFFF, UQ_KBD_IGNORE, UQ_HID_IGNORE, UQ_NONE)},
 122         {USB_QUIRK_ENTRY(USB_VENDOR_METAGEEK, USB_PRODUCT_METAGEEK_WISPY1B, 0x0000, 0xFFFF, UQ_KBD_IGNORE, UQ_HID_IGNORE, UQ_NONE)},
 123         {USB_QUIRK_ENTRY(USB_VENDOR_TENX, USB_PRODUCT_TENX_UAUDIO0, 0x0101, 0x0101, UQ_AUDIO_SWAP_LR, UQ_NONE)},
 124         /* MS keyboards do weird things */
 125         {USB_QUIRK_ENTRY(USB_VENDOR_MICROSOFT, USB_PRODUCT_MICROSOFT_WLINTELLIMOUSE, 0x0000, 0xFFFF, UQ_MS_LEADING_BYTE, UQ_NONE)},
 126         {USB_QUIRK_ENTRY(USB_VENDOR_METAGEEK, USB_PRODUCT_METAGEEK_WISPY24X, 0x0000, 0xFFFF, UQ_KBD_IGNORE, UQ_HID_IGNORE, UQ_NONE)},
 127 };
 128
 129 static const char *usb_quirk_str[USB_QUIRK_MAX] = {
 130         [UQ_NONE]               = "UQ_NONE",
 131         [UQ_AUDIO_SWAP_LR]      = "UQ_AUDIO_SWAP_LR",
 132         [UQ_AU_INP_ASYNC]       = "UQ_AU_INP_ASYNC",
 133         [UQ_AU_NO_FRAC]         = "UQ_AU_NO_FRAC",
 134         [UQ_AU_NO_XU]           = "UQ_AU_NO_XU",
 135         [UQ_BAD_ADC]            = "UQ_BAD_ADC",
 136         [UQ_BAD_AUDIO]          = "UQ_BAD_AUDIO",
 137         [UQ_BROKEN_BIDIR]       = "UQ_BROKEN_BIDIR",
 138         [UQ_BUS_POWERED]        = "UQ_BUS_POWERED",
 139         [UQ_HID_IGNORE]         = "UQ_HID_IGNORE",
 140         [UQ_KBD_IGNORE]         = "UQ_KBD_IGNORE",
 141         [UQ_MS_BAD_CLASS]       = "UQ_MS_BAD_CLASS",
 142         [UQ_MS_LEADING_BYTE]    = "UQ_MS_LEADING_BYTE",
 143         [UQ_MS_REVZ]            = "UQ_MS_REVZ",
 144         [UQ_NO_STRINGS]         = "UQ_NO_STRINGS",
 145         [UQ_OPEN_CLEARSTALL]    = "UQ_OPEN_CLEARSTALL",
 146         [UQ_POWER_CLAIM]        = "UQ_POWER_CLAIM",
 147         [UQ_SPUR_BUT_UP]        = "UQ_SPUR_BUT_UP",
 148         [UQ_SWAP_UNICODE]       = "UQ_SWAP_UNICODE",
 149         [UQ_CFG_INDEX_1]        = "UQ_CFG_INDEX_1",
 150         [UQ_CFG_INDEX_2]        = "UQ_CFG_INDEX_2",
 151         [UQ_CFG_INDEX_3]        = "UQ_CFG_INDEX_3",
 152         [UQ_CFG_INDEX_4]        = "UQ_CFG_INDEX_4",
 153         [UQ_CFG_INDEX_0]        = "UQ_CFG_INDEX_0",
 154 };
 155
 156 /*------------------------------------------------------------------------*
 157  *      usb_quirkstr
 158  *
 159  * This function converts an USB quirk code into a string.
 160  *------------------------------------------------------------------------*/
 161 static const char *
 162 usb_quirkstr(uint16_t quirk)
 163 {
 164         return ((quirk < USB_QUIRK_MAX) ?
 165             usb_quirk_str[quirk] : "USB_QUIRK_UNKNOWN");
 166 }
 167
 168 /*------------------------------------------------------------------------*
 169  *      usb_test_quirk_by_info
 170  *
 171  * Returns:
 172  * 0: Quirk not found
 173  * Else: Quirk found
 174  *------------------------------------------------------------------------*/
 175 static uint8_t
 176 usb_test_quirk_by_info(const struct usbd_lookup_info *info, uint16_t quirk)
 177 {
 178         uint16_t x;
 179         uint16_t y;
 180
 181         if (quirk == UQ_NONE) {
 182                 return (0);
 183         }
 184         mtx_lock(&usb_quirk_mtx);
 185
 186         for (x = 0; x != USB_DEV_QUIRKS_MAX; x++) {
 187                 /* see if quirk information does not match */
 188                 if ((usb_quirks[x].vid != info->idVendor) ||
 189                     (usb_quirks[x].pid != info->idProduct) ||
 190                     (usb_quirks[x].lo_rev > info->bcdDevice) ||
 191                     (usb_quirks[x].hi_rev < info->bcdDevice)) {
 192                         continue;
 193                 }
 194                 /* lookup quirk */
 195                 for (y = 0; y != USB_SUB_QUIRKS_MAX; y++) {
 196                         if (usb_quirks[x].quirks[y] == quirk) {
 197                                 mtx_unlock(&usb_quirk_mtx);
 198                                 DPRINTF("Found quirk '%s'.\n", usb_quirkstr(quirk));
 199                                 return (1);
 200                         }
 201                 }
 202                 /* no quirk found */
 203                 break;
 204         }
 205         mtx_unlock(&usb_quirk_mtx);
 206         return (0);
 207 }
 208
 209 static struct usb_quirk_entry *
 210 usb_quirk_get_entry(uint16_t vid, uint16_t pid,
 211     uint16_t lo_rev, uint16_t hi_rev, uint8_t do_alloc)
 212 {
 213         uint16_t x;
 214
 215         mtx_assert(&usb_quirk_mtx, MA_OWNED);
 216
 217         if ((vid | pid | lo_rev | hi_rev) == 0) {
 218                 /* all zero - special case */
 219                 return (usb_quirks + USB_DEV_QUIRKS_MAX - 1);
 220         }
 221         /* search for an existing entry */
 222         for (x = 0; x != USB_DEV_QUIRKS_MAX; x++) {
 223                 /* see if quirk information does not match */
 224                 if ((usb_quirks[x].vid != vid) ||
 225                     (usb_quirks[x].pid != pid) ||
 226                     (usb_quirks[x].lo_rev != lo_rev) ||
 227                     (usb_quirks[x].hi_rev != hi_rev)) {
 228                         continue;
 229                 }
 230                 return (usb_quirks + x);
 231         }
 232
 233         if (do_alloc == 0) {
 234                 /* no match */
 235                 return (NULL);
 236         }
 237         /* search for a free entry */
 238         for (x = 0; x != USB_DEV_QUIRKS_MAX; x++) {
 239                 /* see if quirk information does not match */
 240                 if ((usb_quirks[x].vid |
 241                     usb_quirks[x].pid |
 242                     usb_quirks[x].lo_rev |
 243                     usb_quirks[x].hi_rev) != 0) {
 244                         continue;
 245                 }
 246                 usb_quirks[x].vid = vid;
 247                 usb_quirks[x].pid = pid;
 248                 usb_quirks[x].lo_rev = lo_rev;
 249                 usb_quirks[x].hi_rev = hi_rev;
 250
 251                 return (usb_quirks + x);
 252         }
 253
 254         /* no entry found */
 255         return (NULL);
 256 }
 257
 258 /*------------------------------------------------------------------------*
 259  *      usb_quirk_ioctl - handle quirk IOCTLs
 260  *
 261  * Returns:
 262  * 0: Success
 263  * Else: Failure
 264  *------------------------------------------------------------------------*/
 265 static int
 266 usb_quirk_ioctl(unsigned long cmd, caddr_t data,
 267     int fflag, struct thread *td)
 268 {
 269         struct usb_gen_quirk *pgq;
 270         struct usb_quirk_entry *pqe;
 271         uint32_t x;
 272         uint32_t y;
 273         int err;
 274
 275         switch (cmd) {
 276         case USB_DEV_QUIRK_GET:
 277                 pgq = (void *)data;
 278                 x = pgq->index % USB_SUB_QUIRKS_MAX;
 279                 y = pgq->index / USB_SUB_QUIRKS_MAX;
 280                 if (y >= USB_DEV_QUIRKS_MAX) {
 281                         return (EINVAL);
 282                 }
 283                 mtx_lock(&usb_quirk_mtx);
 284                 /* copy out data */
 285                 pgq->vid = usb_quirks[y].vid;
 286                 pgq->pid = usb_quirks[y].pid;
 287                 pgq->bcdDeviceLow = usb_quirks[y].lo_rev;
 288                 pgq->bcdDeviceHigh = usb_quirks[y].hi_rev;
 289                 strlcpy(pgq->quirkname,
 290                     usb_quirkstr(usb_quirks[y].quirks[x]),
 291                     sizeof(pgq->quirkname));
 292                 mtx_unlock(&usb_quirk_mtx);
 293                 return (0);             /* success */
 294
 295         case USB_QUIRK_NAME_GET:
 296                 pgq = (void *)data;
 297                 x = pgq->index;
 298                 if (x >= USB_QUIRK_MAX) {
 299                         return (EINVAL);
 300                 }
 301                 strlcpy(pgq->quirkname,
 302                     usb_quirkstr(x), sizeof(pgq->quirkname));
 303                 return (0);             /* success */
 304
 305         case USB_DEV_QUIRK_ADD:
 306                 pgq = (void *)data;
 307
 308                 /* check privileges */
 309                 err = priv_check(curthread, PRIV_DRIVER);
 310                 if (err) {
 311                         return (err);
 312                 }
 313                 /* convert quirk string into numerical */
 314                 for (y = 0; y != USB_DEV_QUIRKS_MAX; y++) {
 315                         if (strcmp(pgq->quirkname, usb_quirkstr(y)) == 0) {
 316                                 break;
 317                         }
 318                 }
 319                 if (y == USB_DEV_QUIRKS_MAX) {
 320                         return (EINVAL);
 321                 }
 322                 if (y == UQ_NONE) {
 323                         return (EINVAL);
 324                 }
 325                 mtx_lock(&usb_quirk_mtx);
 326                 pqe = usb_quirk_get_entry(pgq->vid, pgq->pid,
 327                     pgq->bcdDeviceLow, pgq->bcdDeviceHigh, 1);
 328                 for (x = 0; x != USB_SUB_QUIRKS_MAX; x++) {
 329                         if (pqe->quirks[x] == UQ_NONE) {
 330                                 pqe->quirks[x] = y;
 331                                 break;
 332                         }
 333                 }
 334                 mtx_unlock(&usb_quirk_mtx);
 335                 if (x == USB_SUB_QUIRKS_MAX) {
 336                         return (ENOMEM);
 337                 }
 338                 return (0);             /* success */
 339
 340         case USB_DEV_QUIRK_REMOVE:
 341                 pgq = (void *)data;
 342                 /* check privileges */
 343                 err = priv_check(curthread, PRIV_DRIVER);
 344                 if (err) {
 345                         return (err);
 346                 }
 347                 /* convert quirk string into numerical */
 348                 for (y = 0; y != USB_DEV_QUIRKS_MAX; y++) {
 349                         if (strcmp(pgq->quirkname, usb_quirkstr(y)) == 0) {
 350                                 break;
 351                         }
 352                 }
 353                 if (y == USB_DEV_QUIRKS_MAX) {
 354                         return (EINVAL);
 355                 }
 356                 if (y == UQ_NONE) {
 357                         return (EINVAL);
 358                 }
 359                 mtx_lock(&usb_quirk_mtx);
 360                 pqe = usb_quirk_get_entry(pgq->vid, pgq->pid,
 361                     pgq->bcdDeviceLow, pgq->bcdDeviceHigh, 0);
 362                 for (x = 0; x != USB_SUB_QUIRKS_MAX; x++) {
 363                         if (pqe->quirks[x] == y) {
 364                                 pqe->quirks[x] = UQ_NONE;
 365                                 break;
 366                         }
 367                 }
 368                 if (x == USB_SUB_QUIRKS_MAX) {
 369                         mtx_unlock(&usb_quirk_mtx);
 370                         return (ENOMEM);
 371                 }
 372                 for (x = 0; x != USB_SUB_QUIRKS_MAX; x++) {
 373                         if (pqe->quirks[x] != UQ_NONE) {
 374                                 break;
 375                         }
 376                 }
 377                 if (x == USB_SUB_QUIRKS_MAX) {
 378                         /* all quirk entries are unused - release */
 379                         memset(pqe, 0, sizeof(pqe));
 380                 }
 381                 mtx_unlock(&usb_quirk_mtx);
 382                 return (0);             /* success */
 383
 384         default:
 385                 break;
 386         }
 387         return (ENOIOCTL);
 388 }
 389
 390 static void
 391 usb_quirk_init(void *arg)
 392 {
 393         /* initialize mutex */
 394         mtx_init(&usb_quirk_mtx, "USB quirk", NULL, MTX_DEF);
 395
 396         /* register our function */
 397         usb_test_quirk_p = &usb_test_quirk_by_info;
 398         usb_quirk_ioctl_p = &usb_quirk_ioctl;
 399 }
 400
 401 static void
 402 usb_quirk_uninit(void *arg)
 403 {
 404         usb_quirk_unload(arg);
 405
 406         /* destroy mutex */
 407         mtx_destroy(&usb_quirk_mtx);
 408 }
 409
 410 SYSINIT(usb_quirk_init, SI_SUB_LOCK, SI_ORDER_FIRST, usb_quirk_init, NULL);
 411 SYSUNINIT(usb_quirk_uninit, SI_SUB_LOCK, SI_ORDER_ANY, usb_quirk_uninit, NULL);