git.oblomov.eu Git - linux-2.6/blob - drivers/hid/usbhid/hid-core.c

   1 /*
   2  *  USB 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) 2006-2007 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 #include <linux/module.h>
  18 #include <linux/slab.h>
  19 #include <linux/init.h>
  20 #include <linux/kernel.h>
  21 #include <linux/list.h>
  22 #include <linux/mm.h>
  23 #include <linux/smp_lock.h>
  24 #include <linux/spinlock.h>
  25 #include <asm/unaligned.h>
  26 #include <asm/byteorder.h>
  27 #include <linux/input.h>
  28 #include <linux/wait.h>
  29
  30 #include <linux/usb.h>
  31
  32 #include <linux/hid.h>
  33 #include <linux/hiddev.h>
  34 #include <linux/hid-debug.h>
  35 #include <linux/hidraw.h>
  36 #include "usbhid.h"
  37
  38 /*
  39  * Version Information
  40  */
  41
  42 #define DRIVER_VERSION "v2.6"
  43 #define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina"
  44 #define DRIVER_DESC "USB HID core driver"
  45 #define DRIVER_LICENSE "GPL"
  46
  47 static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
  48                                 "Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
  49 /*
  50  * Module parameters.
  51  */
  52
  53 static unsigned int hid_mousepoll_interval;
  54 module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
  55 MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
  56
  57 /* Quirks specified at module load time */
  58 static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
  59 module_param_array_named(quirks, quirks_param, charp, NULL, 0444);
  60 MODULE_PARM_DESC(quirks, "Add/modify USB HID quirks by specifying "
  61                 " quirks=vendorID:productID:quirks"
  62                 " where vendorID, productID, and quirks are all in"
  63                 " 0x-prefixed hex");
  64 static char *rdesc_quirks_param[MAX_USBHID_BOOT_QUIRKS] = { [ 0 ... (MAX_USBHID_BOOT_QUIRKS - 1) ] = NULL };
  65 module_param_array_named(rdesc_quirks, rdesc_quirks_param, charp, NULL, 0444);
  66 MODULE_PARM_DESC(rdesc_quirks, "Add/modify report descriptor quirks by specifying "
  67                 " rdesc_quirks=vendorID:productID:rdesc_quirks"
  68                 " where vendorID, productID, and rdesc_quirks are all in"
  69                 " 0x-prefixed hex");
  70 /*
  71  * Input submission and I/O error handler.
  72  */
  73
  74 static void hid_io_error(struct hid_device *hid);
  75
  76 /* Start up the input URB */
  77 static int hid_start_in(struct hid_device *hid)
  78 {
  79         unsigned long flags;
  80         int rc = 0;
  81         struct usbhid_device *usbhid = hid->driver_data;
  82
  83         spin_lock_irqsave(&usbhid->inlock, flags);
  84         if (hid->open > 0 && !test_bit(HID_SUSPENDED, &usbhid->iofl) &&
  85                         !test_bit(HID_DISCONNECTED, &usbhid->iofl) &&
  86                         !test_and_set_bit(HID_IN_RUNNING, &usbhid->iofl)) {
  87                 rc = usb_submit_urb(usbhid->urbin, GFP_ATOMIC);
  88                 if (rc != 0)
  89                         clear_bit(HID_IN_RUNNING, &usbhid->iofl);
  90         }
  91         spin_unlock_irqrestore(&usbhid->inlock, flags);
  92         return rc;
  93 }
  94
  95 /* I/O retry timer routine */
  96 static void hid_retry_timeout(unsigned long _hid)
  97 {
  98         struct hid_device *hid = (struct hid_device *) _hid;
  99         struct usbhid_device *usbhid = hid->driver_data;
 100
 101         dev_dbg(&usbhid->intf->dev, "retrying intr urb\n");
 102         if (hid_start_in(hid))
 103                 hid_io_error(hid);
 104 }
 105
 106 /* Workqueue routine to reset the device or clear a halt */
 107 static void hid_reset(struct work_struct *work)
 108 {
 109         struct usbhid_device *usbhid =
 110                 container_of(work, struct usbhid_device, reset_work);
 111         struct hid_device *hid = usbhid->hid;
 112         int rc_lock, rc = 0;
 113
 114         if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) {
 115                 dev_dbg(&usbhid->intf->dev, "clear halt\n");
 116                 rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe);
 117                 clear_bit(HID_CLEAR_HALT, &usbhid->iofl);
 118                 hid_start_in(hid);
 119         }
 120
 121         else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) {
 122                 dev_dbg(&usbhid->intf->dev, "resetting device\n");
 123                 rc = rc_lock = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf);
 124                 if (rc_lock >= 0) {
 125                         rc = usb_reset_device(hid_to_usb_dev(hid));
 126                         if (rc_lock)
 127                                 usb_unlock_device(hid_to_usb_dev(hid));
 128                 }
 129                 clear_bit(HID_RESET_PENDING, &usbhid->iofl);
 130         }
 131
 132         switch (rc) {
 133         case 0:
 134                 if (!test_bit(HID_IN_RUNNING, &usbhid->iofl))
 135                         hid_io_error(hid);
 136                 break;
 137         default:
 138                 err_hid("can't reset device, %s-%s/input%d, status %d",
 139                                 hid_to_usb_dev(hid)->bus->bus_name,
 140                                 hid_to_usb_dev(hid)->devpath,
 141                                 usbhid->ifnum, rc);
 142                 /* FALLTHROUGH */
 143         case -EHOSTUNREACH:
 144         case -ENODEV:
 145         case -EINTR:
 146                 break;
 147         }
 148 }
 149
 150 /* Main I/O error handler */
 151 static void hid_io_error(struct hid_device *hid)
 152 {
 153         unsigned long flags;
 154         struct usbhid_device *usbhid = hid->driver_data;
 155
 156         spin_lock_irqsave(&usbhid->inlock, flags);
 157
 158         /* Stop when disconnected */
 159         if (test_bit(HID_DISCONNECTED, &usbhid->iofl))
 160                 goto done;
 161
 162         /* If it has been a while since the last error, we'll assume
 163          * this a brand new error and reset the retry timeout. */
 164         if (time_after(jiffies, usbhid->stop_retry + HZ/2))
 165                 usbhid->retry_delay = 0;
 166
 167         /* When an error occurs, retry at increasing intervals */
 168         if (usbhid->retry_delay == 0) {
 169                 usbhid->retry_delay = 13;       /* Then 26, 52, 104, 104, ... */
 170                 usbhid->stop_retry = jiffies + msecs_to_jiffies(1000);
 171         } else if (usbhid->retry_delay < 100)
 172                 usbhid->retry_delay *= 2;
 173
 174         if (time_after(jiffies, usbhid->stop_retry)) {
 175
 176                 /* Retries failed, so do a port reset */
 177                 if (!test_and_set_bit(HID_RESET_PENDING, &usbhid->iofl)) {
 178                         schedule_work(&usbhid->reset_work);
 179                         goto done;
 180                 }
 181         }
 182
 183         mod_timer(&usbhid->io_retry,
 184                         jiffies + msecs_to_jiffies(usbhid->retry_delay));
 185 done:
 186         spin_unlock_irqrestore(&usbhid->inlock, flags);
 187 }
 188
 189 /*
 190  * Input interrupt completion handler.
 191  */
 192
 193 static void hid_irq_in(struct urb *urb)
 194 {
 195         struct hid_device       *hid = urb->context;
 196         struct usbhid_device    *usbhid = hid->driver_data;
 197         int                     status;
 198
 199         switch (urb->status) {
 200                 case 0:                 /* success */
 201                         usbhid->retry_delay = 0;
 202                         hid_input_report(urb->context, HID_INPUT_REPORT,
 203                                          urb->transfer_buffer,
 204                                          urb->actual_length, 1);
 205                         break;
 206                 case -EPIPE:            /* stall */
 207                         clear_bit(HID_IN_RUNNING, &usbhid->iofl);
 208                         set_bit(HID_CLEAR_HALT, &usbhid->iofl);
 209                         schedule_work(&usbhid->reset_work);
 210                         return;
 211                 case -ECONNRESET:       /* unlink */
 212                 case -ENOENT:
 213                 case -ESHUTDOWN:        /* unplug */
 214                         clear_bit(HID_IN_RUNNING, &usbhid->iofl);
 215                         return;
 216                 case -EILSEQ:           /* protocol error or unplug */
 217                 case -EPROTO:           /* protocol error or unplug */
 218                 case -ETIME:            /* protocol error or unplug */
 219                 case -ETIMEDOUT:        /* Should never happen, but... */
 220                         clear_bit(HID_IN_RUNNING, &usbhid->iofl);
 221                         hid_io_error(hid);
 222                         return;
 223                 default:                /* error */
 224                         warn("input irq status %d received", urb->status);
 225         }
 226
 227         status = usb_submit_urb(urb, GFP_ATOMIC);
 228         if (status) {
 229                 clear_bit(HID_IN_RUNNING, &usbhid->iofl);
 230                 if (status != -EPERM) {
 231                         err_hid("can't resubmit intr, %s-%s/input%d, status %d",
 232                                         hid_to_usb_dev(hid)->bus->bus_name,
 233                                         hid_to_usb_dev(hid)->devpath,
 234                                         usbhid->ifnum, status);
 235                         hid_io_error(hid);
 236                 }
 237         }
 238 }
 239
 240 static int hid_submit_out(struct hid_device *hid)
 241 {
 242         struct hid_report *report;
 243         struct usbhid_device *usbhid = hid->driver_data;
 244
 245         report = usbhid->out[usbhid->outtail];
 246
 247         hid_output_report(report, usbhid->outbuf);
 248         usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
 249         usbhid->urbout->dev = hid_to_usb_dev(hid);
 250
 251         dbg_hid("submitting out urb\n");
 252
 253         if (usb_submit_urb(usbhid->urbout, GFP_ATOMIC)) {
 254                 err_hid("usb_submit_urb(out) failed");
 255                 return -1;
 256         }
 257
 258         return 0;
 259 }
 260
 261 static int hid_submit_ctrl(struct hid_device *hid)
 262 {
 263         struct hid_report *report;
 264         unsigned char dir;
 265         int len;
 266         struct usbhid_device *usbhid = hid->driver_data;
 267
 268         report = usbhid->ctrl[usbhid->ctrltail].report;
 269         dir = usbhid->ctrl[usbhid->ctrltail].dir;
 270
 271         len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
 272         if (dir == USB_DIR_OUT) {
 273                 hid_output_report(report, usbhid->ctrlbuf);
 274                 usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0);
 275                 usbhid->urbctrl->transfer_buffer_length = len;
 276         } else {
 277                 int maxpacket, padlen;
 278
 279                 usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
 280                 maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);
 281                 if (maxpacket > 0) {
 282                         padlen = DIV_ROUND_UP(len, maxpacket);
 283                         padlen *= maxpacket;
 284                         if (padlen > usbhid->bufsize)
 285                                 padlen = usbhid->bufsize;
 286                 } else
 287                         padlen = 0;
 288                 usbhid->urbctrl->transfer_buffer_length = padlen;
 289         }
 290         usbhid->urbctrl->dev = hid_to_usb_dev(hid);
 291
 292         usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
 293         usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
 294         usbhid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
 295         usbhid->cr->wIndex = cpu_to_le16(usbhid->ifnum);
 296         usbhid->cr->wLength = cpu_to_le16(len);
 297
 298         dbg_hid("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u\n",
 299                 usbhid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
 300                 usbhid->cr->wValue, usbhid->cr->wIndex, usbhid->cr->wLength);
 301
 302         if (usb_submit_urb(usbhid->urbctrl, GFP_ATOMIC)) {
 303                 err_hid("usb_submit_urb(ctrl) failed");
 304                 return -1;
 305         }
 306
 307         return 0;
 308 }
 309
 310 /*
 311  * Output interrupt completion handler.
 312  */
 313
 314 static void hid_irq_out(struct urb *urb)
 315 {
 316         struct hid_device *hid = urb->context;
 317         struct usbhid_device *usbhid = hid->driver_data;
 318         unsigned long flags;
 319         int unplug = 0;
 320
 321         switch (urb->status) {
 322                 case 0:                 /* success */
 323                         break;
 324                 case -ESHUTDOWN:        /* unplug */
 325                         unplug = 1;
 326                 case -EILSEQ:           /* protocol error or unplug */
 327                 case -EPROTO:           /* protocol error or unplug */
 328                 case -ECONNRESET:       /* unlink */
 329                 case -ENOENT:
 330                         break;
 331                 default:                /* error */
 332                         warn("output irq status %d received", urb->status);
 333         }
 334
 335         spin_lock_irqsave(&usbhid->outlock, flags);
 336
 337         if (unplug)
 338                 usbhid->outtail = usbhid->outhead;
 339         else
 340                 usbhid->outtail = (usbhid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
 341
 342         if (usbhid->outhead != usbhid->outtail) {
 343                 if (hid_submit_out(hid)) {
 344                         clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
 345                         wake_up(&usbhid->wait);
 346                 }
 347                 spin_unlock_irqrestore(&usbhid->outlock, flags);
 348                 return;
 349         }
 350
 351         clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
 352         spin_unlock_irqrestore(&usbhid->outlock, flags);
 353         wake_up(&usbhid->wait);
 354 }
 355
 356 /*
 357  * Control pipe completion handler.
 358  */
 359
 360 static void hid_ctrl(struct urb *urb)
 361 {
 362         struct hid_device *hid = urb->context;
 363         struct usbhid_device *usbhid = hid->driver_data;
 364         unsigned long flags;
 365         int unplug = 0;
 366
 367         spin_lock_irqsave(&usbhid->ctrllock, flags);
 368
 369         switch (urb->status) {
 370                 case 0:                 /* success */
 371                         if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_IN)
 372                                 hid_input_report(urb->context, usbhid->ctrl[usbhid->ctrltail].report->type,
 373                                                 urb->transfer_buffer, urb->actual_length, 0);
 374                         break;
 375                 case -ESHUTDOWN:        /* unplug */
 376                         unplug = 1;
 377                 case -EILSEQ:           /* protocol error or unplug */
 378                 case -EPROTO:           /* protocol error or unplug */
 379                 case -ECONNRESET:       /* unlink */
 380                 case -ENOENT:
 381                 case -EPIPE:            /* report not available */
 382                         break;
 383                 default:                /* error */
 384                         warn("ctrl urb status %d received", urb->status);
 385         }
 386
 387         if (unplug)
 388                 usbhid->ctrltail = usbhid->ctrlhead;
 389         else
 390                 usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
 391
 392         if (usbhid->ctrlhead != usbhid->ctrltail) {
 393                 if (hid_submit_ctrl(hid)) {
 394                         clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
 395                         wake_up(&usbhid->wait);
 396                 }
 397                 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
 398                 return;
 399         }
 400
 401         clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
 402         spin_unlock_irqrestore(&usbhid->ctrllock, flags);
 403         wake_up(&usbhid->wait);
 404 }
 405
 406 void usbhid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
 407 {
 408         int head;
 409         unsigned long flags;
 410         struct usbhid_device *usbhid = hid->driver_data;
 411
 412         if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
 413                 return;
 414
 415         if (usbhid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
 416
 417                 spin_lock_irqsave(&usbhid->outlock, flags);
 418
 419                 if ((head = (usbhid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == usbhid->outtail) {
 420                         spin_unlock_irqrestore(&usbhid->outlock, flags);
 421                         warn("output queue full");
 422                         return;
 423                 }
 424
 425                 usbhid->out[usbhid->outhead] = report;
 426                 usbhid->outhead = head;
 427
 428                 if (!test_and_set_bit(HID_OUT_RUNNING, &usbhid->iofl))
 429                         if (hid_submit_out(hid))
 430                                 clear_bit(HID_OUT_RUNNING, &usbhid->iofl);
 431
 432                 spin_unlock_irqrestore(&usbhid->outlock, flags);
 433                 return;
 434         }
 435
 436         spin_lock_irqsave(&usbhid->ctrllock, flags);
 437
 438         if ((head = (usbhid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == usbhid->ctrltail) {
 439                 spin_unlock_irqrestore(&usbhid->ctrllock, flags);
 440                 warn("control queue full");
 441                 return;
 442         }
 443
 444         usbhid->ctrl[usbhid->ctrlhead].report = report;
 445         usbhid->ctrl[usbhid->ctrlhead].dir = dir;
 446         usbhid->ctrlhead = head;
 447
 448         if (!test_and_set_bit(HID_CTRL_RUNNING, &usbhid->iofl))
 449                 if (hid_submit_ctrl(hid))
 450                         clear_bit(HID_CTRL_RUNNING, &usbhid->iofl);
 451
 452         spin_unlock_irqrestore(&usbhid->ctrllock, flags);
 453 }
 454
 455 static int usb_hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 456 {
 457         struct hid_device *hid = input_get_drvdata(dev);
 458         struct hid_field *field;
 459         int offset;
 460
 461         if (type == EV_FF)
 462                 return input_ff_event(dev, type, code, value);
 463
 464         if (type != EV_LED)
 465                 return -1;
 466
 467         if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
 468                 warn("event field not found");
 469                 return -1;
 470         }
 471
 472         hid_set_field(field, offset, value);
 473         usbhid_submit_report(hid, field->report, USB_DIR_OUT);
 474
 475         return 0;
 476 }
 477
 478 int usbhid_wait_io(struct hid_device *hid)
 479 {
 480         struct usbhid_device *usbhid = hid->driver_data;
 481
 482         if (!wait_event_timeout(usbhid->wait,
 483                                 (!test_bit(HID_CTRL_RUNNING, &usbhid->iofl) &&
 484                                 !test_bit(HID_OUT_RUNNING, &usbhid->iofl)),
 485                                         10*HZ)) {
 486                 dbg_hid("timeout waiting for ctrl or out queue to clear\n");
 487                 return -1;
 488         }
 489
 490         return 0;
 491 }
 492
 493 static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
 494 {
 495         return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 496                 HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, (idle << 8) | report,
 497                 ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
 498 }
 499
 500 static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
 501                 unsigned char type, void *buf, int size)
 502 {
 503         int result, retries = 4;
 504
 505         memset(buf, 0, size);
 506
 507         do {
 508                 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 509                                 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
 510                                 (type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
 511                 retries--;
 512         } while (result < size && retries);
 513         return result;
 514 }
 515
 516 int usbhid_open(struct hid_device *hid)
 517 {
 518         struct usbhid_device *usbhid = hid->driver_data;
 519         int res;
 520
 521         if (!hid->open++) {
 522                 res = usb_autopm_get_interface(usbhid->intf);
 523                 if (res < 0) {
 524                         hid->open--;
 525                         return -EIO;
 526                 }
 527         }
 528         if (hid_start_in(hid))
 529                 hid_io_error(hid);
 530         return 0;
 531 }
 532
 533 void usbhid_close(struct hid_device *hid)
 534 {
 535         struct usbhid_device *usbhid = hid->driver_data;
 536
 537         if (!--hid->open) {
 538                 usb_kill_urb(usbhid->urbin);
 539                 usb_autopm_put_interface(usbhid->intf);
 540         }
 541 }
 542
 543 /*
 544  * Initialize all reports
 545  */
 546
 547 void usbhid_init_reports(struct hid_device *hid)
 548 {
 549         struct hid_report *report;
 550         struct usbhid_device *usbhid = hid->driver_data;
 551         int err, ret;
 552
 553         list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list)
 554                 usbhid_submit_report(hid, report, USB_DIR_IN);
 555
 556         list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
 557                 usbhid_submit_report(hid, report, USB_DIR_IN);
 558
 559         err = 0;
 560         ret = usbhid_wait_io(hid);
 561         while (ret) {
 562                 err |= ret;
 563                 if (test_bit(HID_CTRL_RUNNING, &usbhid->iofl))
 564                         usb_kill_urb(usbhid->urbctrl);
 565                 if (test_bit(HID_OUT_RUNNING, &usbhid->iofl))
 566                         usb_kill_urb(usbhid->urbout);
 567                 ret = usbhid_wait_io(hid);
 568         }
 569
 570         if (err)
 571                 warn("timeout initializing reports");
 572 }
 573
 574 /*
 575  * Reset LEDs which BIOS might have left on. For now, just NumLock (0x01).
 576  */
 577 static int hid_find_field_early(struct hid_device *hid, unsigned int page,
 578     unsigned int hid_code, struct hid_field **pfield)
 579 {
 580         struct hid_report *report;
 581         struct hid_field *field;
 582         struct hid_usage *usage;
 583         int i, j;
 584
 585         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
 586                 for (i = 0; i < report->maxfield; i++) {
 587                         field = report->field[i];
 588                         for (j = 0; j < field->maxusage; j++) {
 589                                 usage = &field->usage[j];
 590                                 if ((usage->hid & HID_USAGE_PAGE) == page &&
 591                                     (usage->hid & 0xFFFF) == hid_code) {
 592                                         *pfield = field;
 593                                         return j;
 594                                 }
 595                         }
 596                 }
 597         }
 598         return -1;
 599 }
 600
 601 static void usbhid_set_leds(struct hid_device *hid)
 602 {
 603         struct hid_field *field;
 604         int offset;
 605
 606         if ((offset = hid_find_field_early(hid, HID_UP_LED, 0x01, &field)) != -1) {
 607                 hid_set_field(field, offset, 0);
 608                 usbhid_submit_report(hid, field->report, USB_DIR_OUT);
 609         }
 610 }
 611
 612 /*
 613  * Traverse the supplied list of reports and find the longest
 614  */
 615 static void hid_find_max_report(struct hid_device *hid, unsigned int type,
 616                 unsigned int *max)
 617 {
 618         struct hid_report *report;
 619         unsigned int size;
 620
 621         list_for_each_entry(report, &hid->report_enum[type].report_list, list) {
 622                 size = ((report->size - 1) >> 3) + 1;
 623                 if (type == HID_INPUT_REPORT && hid->report_enum[type].numbered)
 624                         size++;
 625                 if (*max < size)
 626                         *max = size;
 627         }
 628 }
 629
 630 static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
 631 {
 632         struct usbhid_device *usbhid = hid->driver_data;
 633
 634         if (!(usbhid->inbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->inbuf_dma)))
 635                 return -1;
 636         if (!(usbhid->outbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->outbuf_dma)))
 637                 return -1;
 638         if (!(usbhid->cr = usb_buffer_alloc(dev, sizeof(*(usbhid->cr)), GFP_ATOMIC, &usbhid->cr_dma)))
 639                 return -1;
 640         if (!(usbhid->ctrlbuf = usb_buffer_alloc(dev, usbhid->bufsize, GFP_ATOMIC, &usbhid->ctrlbuf_dma)))
 641                 return -1;
 642
 643         return 0;
 644 }
 645
 646 static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t count)
 647 {
 648         struct usbhid_device *usbhid = hid->driver_data;
 649         struct usb_device *dev = hid_to_usb_dev(hid);
 650         struct usb_interface *intf = usbhid->intf;
 651         struct usb_host_interface *interface = intf->cur_altsetting;
 652         int ret;
 653
 654         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
 655                 HID_REQ_SET_REPORT,
 656                 USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 657                 ((HID_OUTPUT_REPORT + 1) << 8) | *buf,
 658                 interface->desc.bInterfaceNumber, buf + 1, count - 1,
 659                 USB_CTRL_SET_TIMEOUT);
 660
 661         /* count also the report id */
 662         if (ret > 0)
 663                 ret++;
 664
 665         return ret;
 666 }
 667
 668 static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
 669 {
 670         struct usbhid_device *usbhid = hid->driver_data;
 671
 672         usb_buffer_free(dev, usbhid->bufsize, usbhid->inbuf, usbhid->inbuf_dma);
 673         usb_buffer_free(dev, usbhid->bufsize, usbhid->outbuf, usbhid->outbuf_dma);
 674         usb_buffer_free(dev, sizeof(*(usbhid->cr)), usbhid->cr, usbhid->cr_dma);
 675         usb_buffer_free(dev, usbhid->bufsize, usbhid->ctrlbuf, usbhid->ctrlbuf_dma);
 676 }
 677
 678 /*
 679  * Sending HID_REQ_GET_REPORT changes the operation mode of the ps3 controller
 680  * to "operational".  Without this, the ps3 controller will not report any
 681  * events.
 682  */
 683 static void hid_fixup_sony_ps3_controller(struct usb_device *dev, int ifnum)
 684 {
 685         int result;
 686         char *buf = kmalloc(18, GFP_KERNEL);
 687
 688         if (!buf)
 689                 return;
 690
 691         result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
 692                                  HID_REQ_GET_REPORT,
 693                                  USB_DIR_IN | USB_TYPE_CLASS |
 694                                  USB_RECIP_INTERFACE,
 695                                  (3 << 8) | 0xf2, ifnum, buf, 17,
 696                                  USB_CTRL_GET_TIMEOUT);
 697
 698         if (result < 0)
 699                 err_hid("%s failed: %d\n", __func__, result);
 700
 701         kfree(buf);
 702 }
 703
 704 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
 705 {
 706         struct usb_host_interface *interface = intf->cur_altsetting;
 707         struct usb_device *dev = interface_to_usbdev (intf);
 708         struct hid_descriptor *hdesc;
 709         struct hid_device *hid;
 710         u32 quirks = 0;
 711         unsigned int insize = 0, rsize = 0;
 712         char *rdesc;
 713         int n, len;
 714         struct usbhid_device *usbhid;
 715
 716         quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor),
 717                         le16_to_cpu(dev->descriptor.idProduct));
 718
 719         /* Many keyboards and mice don't like to be polled for reports,
 720          * so we will always set the HID_QUIRK_NOGET flag for them. */
 721         if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
 722                 if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD ||
 723                         interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)
 724                                 quirks |= HID_QUIRK_NOGET;
 725         }
 726
 727         if (quirks & HID_QUIRK_IGNORE)
 728                 return NULL;
 729
 730         if ((quirks & HID_QUIRK_IGNORE_MOUSE) &&
 731                 (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE))
 732                         return NULL;
 733
 734
 735         if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) &&
 736             (!interface->desc.bNumEndpoints ||
 737              usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
 738                 dbg_hid("class descriptor not present\n");
 739                 return NULL;
 740         }
 741
 742         for (n = 0; n < hdesc->bNumDescriptors; n++)
 743                 if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
 744                         rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
 745
 746         if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
 747                 dbg_hid("weird size of report descriptor (%u)\n", rsize);
 748                 return NULL;
 749         }
 750
 751         if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
 752                 dbg_hid("couldn't allocate rdesc memory\n");
 753                 return NULL;
 754         }
 755
 756         hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0);
 757
 758         if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
 759                 dbg_hid("reading report descriptor failed\n");
 760                 kfree(rdesc);
 761                 return NULL;
 762         }
 763
 764         usbhid_fixup_report_descriptor(le16_to_cpu(dev->descriptor.idVendor),
 765                         le16_to_cpu(dev->descriptor.idProduct), rdesc,
 766                         rsize, rdesc_quirks_param);
 767
 768         dbg_hid("report descriptor (size %u, read %d) = ", rsize, n);
 769         for (n = 0; n < rsize; n++)
 770                 dbg_hid_line(" %02x", (unsigned char) rdesc[n]);
 771         dbg_hid_line("\n");
 772
 773         if (!(hid = hid_parse_report(rdesc, n))) {
 774                 dbg_hid("parsing report descriptor failed\n");
 775                 kfree(rdesc);
 776                 return NULL;
 777         }
 778
 779         kfree(rdesc);
 780         hid->quirks = quirks;
 781
 782         if (!(usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL)))
 783                 goto fail_no_usbhid;
 784
 785         hid->driver_data = usbhid;
 786         usbhid->hid = hid;
 787
 788         usbhid->bufsize = HID_MIN_BUFFER_SIZE;
 789         hid_find_max_report(hid, HID_INPUT_REPORT, &usbhid->bufsize);
 790         hid_find_max_report(hid, HID_OUTPUT_REPORT, &usbhid->bufsize);
 791         hid_find_max_report(hid, HID_FEATURE_REPORT, &usbhid->bufsize);
 792
 793         if (usbhid->bufsize > HID_MAX_BUFFER_SIZE)
 794                 usbhid->bufsize = HID_MAX_BUFFER_SIZE;
 795
 796         hid_find_max_report(hid, HID_INPUT_REPORT, &insize);
 797
 798         if (insize > HID_MAX_BUFFER_SIZE)
 799                 insize = HID_MAX_BUFFER_SIZE;
 800
 801         if (hid_alloc_buffers(dev, hid)) {
 802                 hid_free_buffers(dev, hid);
 803                 goto fail;
 804         }
 805
 806         hid->name[0] = 0;
 807
 808         if (dev->manufacturer)
 809                 strlcpy(hid->name, dev->manufacturer, sizeof(hid->name));
 810
 811         if (dev->product) {
 812                 if (dev->manufacturer)
 813                         strlcat(hid->name, " ", sizeof(hid->name));
 814                 strlcat(hid->name, dev->product, sizeof(hid->name));
 815         }
 816
 817         if (!strlen(hid->name))
 818                 snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x",
 819                          le16_to_cpu(dev->descriptor.idVendor),
 820                          le16_to_cpu(dev->descriptor.idProduct));
 821
 822         for (n = 0; n < interface->desc.bNumEndpoints; n++) {
 823
 824                 struct usb_endpoint_descriptor *endpoint;
 825                 int pipe;
 826                 int interval;
 827
 828                 endpoint = &interface->endpoint[n].desc;
 829                 if ((endpoint->bmAttributes & 3) != 3)          /* Not an interrupt endpoint */
 830                         continue;
 831
 832                 interval = endpoint->bInterval;
 833
 834                 /* Some vendors give fullspeed interval on highspeed devides */
 835                 if (quirks & HID_QUIRK_FULLSPEED_INTERVAL  &&
 836                     dev->speed == USB_SPEED_HIGH) {
 837                         interval = fls(endpoint->bInterval*8);
 838                         printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n",
 839                                hid->name, endpoint->bInterval, interval);
 840                 }
 841
 842                 /* Change the polling interval of mice. */
 843                 if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
 844                         interval = hid_mousepoll_interval;
 845
 846                 if (usb_endpoint_dir_in(endpoint)) {
 847                         if (usbhid->urbin)
 848                                 continue;
 849                         if (!(usbhid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
 850                                 goto fail;
 851                         pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
 852                         usb_fill_int_urb(usbhid->urbin, dev, pipe, usbhid->inbuf, insize,
 853                                          hid_irq_in, hid, interval);
 854                         usbhid->urbin->transfer_dma = usbhid->inbuf_dma;
 855                         usbhid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 856                 } else {
 857                         if (usbhid->urbout)
 858                                 continue;
 859                         if (!(usbhid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
 860                                 goto fail;
 861                         pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
 862                         usb_fill_int_urb(usbhid->urbout, dev, pipe, usbhid->outbuf, 0,
 863                                          hid_irq_out, hid, interval);
 864                         usbhid->urbout->transfer_dma = usbhid->outbuf_dma;
 865                         usbhid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 866                 }
 867         }
 868
 869         if (!usbhid->urbin) {
 870                 err_hid("couldn't find an input interrupt endpoint");
 871                 goto fail;
 872         }
 873
 874         init_waitqueue_head(&usbhid->wait);
 875         INIT_WORK(&usbhid->reset_work, hid_reset);
 876         setup_timer(&usbhid->io_retry, hid_retry_timeout, (unsigned long) hid);
 877
 878         spin_lock_init(&usbhid->inlock);
 879         spin_lock_init(&usbhid->outlock);
 880         spin_lock_init(&usbhid->ctrllock);
 881
 882         hid->version = le16_to_cpu(hdesc->bcdHID);
 883         hid->country = hdesc->bCountryCode;
 884         hid->dev = &intf->dev;
 885         usbhid->intf = intf;
 886         usbhid->ifnum = interface->desc.bInterfaceNumber;
 887
 888         hid->bus = BUS_USB;
 889         hid->vendor = le16_to_cpu(dev->descriptor.idVendor);
 890         hid->product = le16_to_cpu(dev->descriptor.idProduct);
 891
 892         usb_make_path(dev, hid->phys, sizeof(hid->phys));
 893         strlcat(hid->phys, "/input", sizeof(hid->phys));
 894         len = strlen(hid->phys);
 895         if (len < sizeof(hid->phys) - 1)
 896                 snprintf(hid->phys + len, sizeof(hid->phys) - len,
 897                          "%d", intf->altsetting[0].desc.bInterfaceNumber);
 898
 899         if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
 900                 hid->uniq[0] = 0;
 901
 902         usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
 903         if (!usbhid->urbctrl)
 904                 goto fail;
 905
 906         usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr,
 907                              usbhid->ctrlbuf, 1, hid_ctrl, hid);
 908         usbhid->urbctrl->setup_dma = usbhid->cr_dma;
 909         usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma;
 910         usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP);
 911         hid->hidinput_input_event = usb_hidinput_input_event;
 912         hid->hid_open = usbhid_open;
 913         hid->hid_close = usbhid_close;
 914 #ifdef CONFIG_USB_HIDDEV
 915         hid->hiddev_hid_event = hiddev_hid_event;
 916         hid->hiddev_report_event = hiddev_report_event;
 917 #endif
 918         hid->hid_output_raw_report = usbhid_output_raw_report;
 919         return hid;
 920
 921 fail:
 922         usb_free_urb(usbhid->urbin);
 923         usb_free_urb(usbhid->urbout);
 924         usb_free_urb(usbhid->urbctrl);
 925         hid_free_buffers(dev, hid);
 926         kfree(usbhid);
 927 fail_no_usbhid:
 928         hid_free_device(hid);
 929
 930         return NULL;
 931 }
 932
 933 static void hid_disconnect(struct usb_interface *intf)
 934 {
 935         struct hid_device *hid = usb_get_intfdata (intf);
 936         struct usbhid_device *usbhid;
 937
 938         if (!hid)
 939                 return;
 940
 941         usbhid = hid->driver_data;
 942
 943         spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
 944         usb_set_intfdata(intf, NULL);
 945         set_bit(HID_DISCONNECTED, &usbhid->iofl);
 946         spin_unlock_irq(&usbhid->inlock);
 947         usb_kill_urb(usbhid->urbin);
 948         usb_kill_urb(usbhid->urbout);
 949         usb_kill_urb(usbhid->urbctrl);
 950
 951         del_timer_sync(&usbhid->io_retry);
 952         cancel_work_sync(&usbhid->reset_work);
 953
 954         if (hid->claimed & HID_CLAIMED_INPUT)
 955                 hidinput_disconnect(hid);
 956         if (hid->claimed & HID_CLAIMED_HIDDEV)
 957                 hiddev_disconnect(hid);
 958         if (hid->claimed & HID_CLAIMED_HIDRAW)
 959                 hidraw_disconnect(hid);
 960
 961         usb_free_urb(usbhid->urbin);
 962         usb_free_urb(usbhid->urbctrl);
 963         usb_free_urb(usbhid->urbout);
 964
 965         hid_free_buffers(hid_to_usb_dev(hid), hid);
 966         kfree(usbhid);
 967         hid_free_device(hid);
 968 }
 969
 970 static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
 971 {
 972         struct hid_device *hid;
 973         char path[64];
 974         int i;
 975         char *c;
 976
 977         dbg_hid("HID probe called for ifnum %d\n",
 978                         intf->altsetting->desc.bInterfaceNumber);
 979
 980         if (!(hid = usb_hid_configure(intf)))
 981                 return -ENODEV;
 982
 983         usbhid_init_reports(hid);
 984         hid_dump_device(hid);
 985         if (hid->quirks & HID_QUIRK_RESET_LEDS)
 986                 usbhid_set_leds(hid);
 987
 988         if (!hidinput_connect(hid))
 989                 hid->claimed |= HID_CLAIMED_INPUT;
 990         if (!hiddev_connect(hid))
 991                 hid->claimed |= HID_CLAIMED_HIDDEV;
 992         if (!hidraw_connect(hid))
 993                 hid->claimed |= HID_CLAIMED_HIDRAW;
 994
 995         usb_set_intfdata(intf, hid);
 996
 997         if (!hid->claimed) {
 998                 printk ("HID device claimed by neither input, hiddev nor hidraw\n");
 999                 hid_disconnect(intf);
1000                 return -ENODEV;
1001         }
1002
1003         if ((hid->claimed & HID_CLAIMED_INPUT))
1004                 hid_ff_init(hid);
1005
1006         if (hid->quirks & HID_QUIRK_SONY_PS3_CONTROLLER)
1007                 hid_fixup_sony_ps3_controller(interface_to_usbdev(intf),
1008                         intf->cur_altsetting->desc.bInterfaceNumber);
1009
1010         printk(KERN_INFO);
1011
1012         if (hid->claimed & HID_CLAIMED_INPUT)
1013                 printk("input");
1014         if ((hid->claimed & HID_CLAIMED_INPUT) && ((hid->claimed & HID_CLAIMED_HIDDEV) ||
1015                                 hid->claimed & HID_CLAIMED_HIDRAW))
1016                 printk(",");
1017         if (hid->claimed & HID_CLAIMED_HIDDEV)
1018                 printk("hiddev%d", hid->minor);
1019         if ((hid->claimed & HID_CLAIMED_INPUT) && (hid->claimed & HID_CLAIMED_HIDDEV) &&
1020                         (hid->claimed & HID_CLAIMED_HIDRAW))
1021                 printk(",");
1022         if (hid->claimed & HID_CLAIMED_HIDRAW)
1023                 printk("hidraw%d", ((struct hidraw*)hid->hidraw)->minor);
1024
1025         c = "Device";
1026         for (i = 0; i < hid->maxcollection; i++) {
1027                 if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1028                     (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1029                     (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1030                         c = hid_types[hid->collection[i].usage & 0xffff];
1031                         break;
1032                 }
1033         }
1034
1035         usb_make_path(interface_to_usbdev(intf), path, 63);
1036
1037         printk(": USB HID v%x.%02x %s [%s] on %s\n",
1038                 hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1039
1040         return 0;
1041 }
1042
1043 static int hid_suspend(struct usb_interface *intf, pm_message_t message)
1044 {
1045         struct hid_device *hid = usb_get_intfdata (intf);
1046         struct usbhid_device *usbhid = hid->driver_data;
1047
1048         spin_lock_irq(&usbhid->inlock); /* Sync with error handler */
1049         set_bit(HID_SUSPENDED, &usbhid->iofl);
1050         spin_unlock_irq(&usbhid->inlock);
1051         del_timer(&usbhid->io_retry);
1052         usb_kill_urb(usbhid->urbin);
1053         dev_dbg(&intf->dev, "suspend\n");
1054         return 0;
1055 }
1056
1057 static int hid_resume(struct usb_interface *intf)
1058 {
1059         struct hid_device *hid = usb_get_intfdata (intf);
1060         struct usbhid_device *usbhid = hid->driver_data;
1061         int status;
1062
1063         clear_bit(HID_SUSPENDED, &usbhid->iofl);
1064         usbhid->retry_delay = 0;
1065         status = hid_start_in(hid);
1066         dev_dbg(&intf->dev, "resume status %d\n", status);
1067         return status;
1068 }
1069
1070 /* Treat USB reset pretty much the same as suspend/resume */
1071 static int hid_pre_reset(struct usb_interface *intf)
1072 {
1073         /* FIXME: What if the interface is already suspended? */
1074         hid_suspend(intf, PMSG_ON);
1075         return 0;
1076 }
1077
1078 /* Same routine used for post_reset and reset_resume */
1079 static int hid_post_reset(struct usb_interface *intf)
1080 {
1081         struct usb_device *dev = interface_to_usbdev (intf);
1082
1083         hid_set_idle(dev, intf->cur_altsetting->desc.bInterfaceNumber, 0, 0);
1084         /* FIXME: Any more reinitialization needed? */
1085
1086         return hid_resume(intf);
1087 }
1088
1089 static struct usb_device_id hid_usb_ids [] = {
1090         { .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1091                 .bInterfaceClass = USB_INTERFACE_CLASS_HID },
1092         { }                                             /* Terminating entry */
1093 };
1094
1095 MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1096
1097 static struct usb_driver hid_driver = {
1098         .name =         "usbhid",
1099         .probe =        hid_probe,
1100         .disconnect =   hid_disconnect,
1101         .suspend =      hid_suspend,
1102         .resume =       hid_resume,
1103         .reset_resume = hid_post_reset,
1104         .pre_reset =    hid_pre_reset,
1105         .post_reset =   hid_post_reset,
1106         .id_table =     hid_usb_ids,
1107         .supports_autosuspend = 1,
1108 };
1109
1110 static int __init hid_init(void)
1111 {
1112         int retval;
1113         retval = usbhid_quirks_init(quirks_param);
1114         if (retval)
1115                 goto usbhid_quirks_init_fail;
1116         retval = hiddev_init();
1117         if (retval)
1118                 goto hiddev_init_fail;
1119         retval = usb_register(&hid_driver);
1120         if (retval)
1121                 goto usb_register_fail;
1122         info(DRIVER_VERSION ":" DRIVER_DESC);
1123
1124         return 0;
1125 usb_register_fail:
1126         hiddev_exit();
1127 hiddev_init_fail:
1128         usbhid_quirks_exit();
1129 usbhid_quirks_init_fail:
1130         return retval;
1131 }
1132
1133 static void __exit hid_exit(void)
1134 {
1135         usb_deregister(&hid_driver);
1136         hiddev_exit();
1137         usbhid_quirks_exit();
1138 }
1139
1140 module_init(hid_init);
1141 module_exit(hid_exit);
1142
1143 MODULE_AUTHOR(DRIVER_AUTHOR);
1144 MODULE_DESCRIPTION(DRIVER_DESC);
1145 MODULE_LICENSE(DRIVER_LICENSE);