LXR linux/drivers/hid/usbhid/hid-quirks.c

   1/*
   2 *  USB HID quirks 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 *  Copyright (c) 2007 Paul Walmsley
   9 */
  10
  11/*
  12 * This program is free software; you can redistribute it and/or modify it
  13 * under the terms of the GNU General Public License as published by the Free
  14 * Software Foundation; either version 2 of the License, or (at your option)
  15 * any later version.
  16 */
  17
  18#include <linux/hid.h>
  19#include <linux/export.h>
  20#include <linux/slab.h>
  21
  22#include "../hid-ids.h"
  23
  24/*
  25 * Alphabetically sorted blacklist by quirk type.
  26 */
  27
  28static const struct hid_blacklist {
  29        __u16 idVendor;
  30        __u16 idProduct;
  31        __u32 quirks;
  32} hid_blacklist[] = {
  33        { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_GAMEPAD, HID_QUIRK_BADPAD },
  34        { USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_PREDATOR, HID_QUIRK_BADPAD },
  35        { USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
  36        { USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
  37        { USB_VENDOR_ID_DWAV, USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER, HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET },
  38        { USB_VENDOR_ID_MOJO, USB_DEVICE_ID_RETRO_ADAPTER, HID_QUIRK_MULTI_INPUT },
  39        { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
  40        { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
  41        { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
  42        { USB_VENDOR_ID_NATSU, USB_DEVICE_ID_NATSU_GAMEPAD, HID_QUIRK_BADPAD },
  43        { USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
  44        { USB_VENDOR_ID_NEXTWINDOW, USB_DEVICE_ID_NEXTWINDOW_TOUCHSCREEN, HID_QUIRK_MULTI_INPUT},
  45        { USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
  46        { USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
  47
  48        { USB_VENDOR_ID_AFATECH, USB_DEVICE_ID_AFATECH_AF9016, HID_QUIRK_FULLSPEED_INTERVAL },
  49
  50        { USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II, HID_QUIRK_MULTI_INPUT },
  51        { USB_VENDOR_ID_ETURBOTOUCH, USB_DEVICE_ID_ETURBOTOUCH, HID_QUIRK_MULTI_INPUT },
  52        { USB_VENDOR_ID_ETURBOTOUCH, USB_DEVICE_ID_ETURBOTOUCH_2968, HID_QUIRK_MULTI_INPUT },
  53        { USB_VENDOR_ID_GREENASIA, USB_DEVICE_ID_GREENASIA_DUAL_USB_JOYPAD, HID_QUIRK_MULTI_INPUT },
  54        { USB_VENDOR_ID_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
  55        { USB_VENDOR_ID_TOUCHPACK, USB_DEVICE_ID_TOUCHPACK_RTS, HID_QUIRK_MULTI_INPUT },
  56
  57        { USB_VENDOR_ID_AIREN, USB_DEVICE_ID_AIREN_SLIMPLUS, HID_QUIRK_NOGET },
  58        { USB_VENDOR_ID_AKAI, USB_DEVICE_ID_AKAI_MPKMINI2, HID_QUIRK_NO_INIT_REPORTS },
  59        { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
  60        { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
  61        { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
  62        { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
  63        { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
  64        { USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS682, HID_QUIRK_NOGET },
  65        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FIGHTERSTICK, HID_QUIRK_NOGET },
  66        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_COMBATSTICK, HID_QUIRK_NOGET },
  67        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_ECLIPSE_YOKE, HID_QUIRK_NOGET },
  68        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE, HID_QUIRK_NOGET },
  69        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_THROTTLE, HID_QUIRK_NOGET },
  70        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET },
  71        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_3AXIS_5BUTTON_STICK, HID_QUIRK_NOGET },
  72        { USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_AXIS_295, HID_QUIRK_NOGET },
  73        { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL },
  74        { USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_CREATIVE_SB_OMNI_SURROUND_51, HID_QUIRK_NOGET },
  75        { USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET },
  76        { USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_WIIU, HID_QUIRK_MULTI_INPUT },
  77        { USB_VENDOR_ID_ELAN, HID_ANY_ID, HID_QUIRK_ALWAYS_POLL },
  78        { USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET },
  79        { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS },
  80        { USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET },
  81        { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_LOGITECH_OEM_USB_OPTICAL_MOUSE_0A4A, HID_QUIRK_ALWAYS_POLL },
  82        { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_LOGITECH_OEM_USB_OPTICAL_MOUSE_0B4A, HID_QUIRK_ALWAYS_POLL },
  83        { USB_VENDOR_ID_HP, USB_PRODUCT_ID_HP_PIXART_OEM_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL },
  84        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_C077, HID_QUIRK_ALWAYS_POLL },
  85        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_KEYBOARD_G710_PLUS, HID_QUIRK_NOGET },
  86        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C01A, HID_QUIRK_ALWAYS_POLL },
  87        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C05A, HID_QUIRK_ALWAYS_POLL },
  88        { USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOUSE_C06A, HID_QUIRK_ALWAYS_POLL },
  89        { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_NOGET },
  90        { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_SURFACE_PRO_2, HID_QUIRK_NO_INIT_REPORTS },
  91        { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_2, HID_QUIRK_NO_INIT_REPORTS },
  92        { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TOUCH_COVER_2, HID_QUIRK_NO_INIT_REPORTS },
  93        { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3, HID_QUIRK_NO_INIT_REPORTS },
  94        { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_2, HID_QUIRK_NO_INIT_REPORTS },
  95        { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_JP, HID_QUIRK_NO_INIT_REPORTS },
  96        { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_3, HID_QUIRK_NO_INIT_REPORTS },
  97        { USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_POWER_COVER, HID_QUIRK_NO_INIT_REPORTS },
  98        { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS },
  99        { USB_VENDOR_ID_NEXIO, USB_DEVICE_ID_NEXIO_MULTITOUCH_PTI0750, HID_QUIRK_NO_INIT_REPORTS },
 100        { USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS },
 101        { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1610, HID_QUIRK_NOGET },
 102        { USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_1640, HID_QUIRK_NOGET },
 103        { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE, HID_QUIRK_ALWAYS_POLL },
 104        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_PIXART_USB_OPTICAL_MOUSE_ID2, HID_QUIRK_ALWAYS_POLL },
 105        { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NO_INIT_REPORTS },
 106        { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1, HID_QUIRK_NO_INIT_REPORTS },
 107        { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN2, HID_QUIRK_NO_INIT_REPORTS },
 108        { USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_MOUSE_4D22, HID_QUIRK_ALWAYS_POLL },
 109        { USB_VENDOR_ID_PRODIGE, USB_DEVICE_ID_PRODIGE_CORDLESS, HID_QUIRK_NOGET },
 110        { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001, HID_QUIRK_NOGET },
 111        { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3003, HID_QUIRK_NOGET },
 112        { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008, HID_QUIRK_NOGET },
 113        { USB_VENDOR_ID_REALTEK, USB_DEVICE_ID_REALTEK_READER, HID_QUIRK_NO_INIT_REPORTS },
 114        { USB_VENDOR_ID_SENNHEISER, USB_DEVICE_ID_SENNHEISER_BTD500USB, HID_QUIRK_NOGET },
 115        { USB_VENDOR_ID_SIGMATEL, USB_DEVICE_ID_SIGMATEL_STMP3780, HID_QUIRK_NOGET },
 116        { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS9200_TOUCH, HID_QUIRK_NOGET },
 117        { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS817_TOUCH, HID_QUIRK_NOGET },
 118        { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS_TS, HID_QUIRK_NO_INIT_REPORTS },
 119        { USB_VENDOR_ID_SIS_TOUCH, USB_DEVICE_ID_SIS1030_TOUCH, HID_QUIRK_NOGET },
 120        { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
 121        { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_1, HID_QUIRK_NOGET },
 122        { USB_VENDOR_ID_SYMBOL, USB_DEVICE_ID_SYMBOL_SCANNER_2, HID_QUIRK_NOGET },
 123        { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8882, HID_QUIRK_NOGET },
 124        { USB_VENDOR_ID_TPV, USB_DEVICE_ID_TPV_OPTICAL_TOUCHSCREEN_8883, HID_QUIRK_NOGET },
 125        { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
 126        { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_KNA5, HID_QUIRK_MULTI_INPUT },
 127        { USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWA60, HID_QUIRK_MULTI_INPUT },
 128        { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH, HID_QUIRK_MULTI_INPUT },
 129        { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH, HID_QUIRK_MULTI_INPUT },
 130        { USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET, HID_QUIRK_MULTI_INPUT },
 131        { USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
 132
 133        { USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
 134
 135        { USB_VENDOR_ID_PI_ENGINEERING, USB_DEVICE_ID_PI_ENGINEERING_VEC_USB_FOOTPEDAL, HID_QUIRK_HIDINPUT_FORCE },
 136
 137        { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_MULTI_TOUCH, HID_QUIRK_MULTI_INPUT },
 138        { USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS, HID_QUIRK_MULTI_INPUT },
 139        { USB_VENDOR_ID_SIGMA_MICRO, USB_DEVICE_ID_SIGMA_MICRO_KEYBOARD, HID_QUIRK_NO_INIT_REPORTS },
 140        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X, HID_QUIRK_MULTI_INPUT },
 141        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2, HID_QUIRK_MULTI_INPUT },
 142        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X, HID_QUIRK_MULTI_INPUT },
 143        { USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912, HID_QUIRK_MULTI_INPUT },
 144        { USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_DUOSENSE, HID_QUIRK_NO_INIT_REPORTS },
 145        { USB_VENDOR_ID_SEMICO, USB_DEVICE_ID_SEMICO_USB_KEYKOARD, HID_QUIRK_NO_INIT_REPORTS },
 146        { USB_VENDOR_ID_SEMICO, USB_DEVICE_ID_SEMICO_USB_KEYKOARD2, HID_QUIRK_NO_INIT_REPORTS },
 147        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS1, HID_QUIRK_NO_INIT_REPORTS },
 148        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_LTS2, HID_QUIRK_NO_INIT_REPORTS },
 149        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_HD, HID_QUIRK_NO_INIT_REPORTS },
 150        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_QUAD_HD, HID_QUIRK_NO_INIT_REPORTS },
 151        { USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP_V103, HID_QUIRK_NO_INIT_REPORTS },
 152        { USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD_A096, HID_QUIRK_NO_INIT_INPUT_REPORTS },
 153        { USB_VENDOR_ID_MULTIPLE_1781, USB_DEVICE_ID_RAPHNET_4NES4SNES_OLD, HID_QUIRK_MULTI_INPUT },
 154        { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_2NES2SNES, HID_QUIRK_MULTI_INPUT },
 155        { USB_VENDOR_ID_DRACAL_RAPHNET, USB_DEVICE_ID_RAPHNET_4NES4SNES, HID_QUIRK_MULTI_INPUT },
 156
 157        { 0, 0 }
 158};
 159
 160/* Dynamic HID quirks list - specified at runtime */
 161struct quirks_list_struct {
 162        struct hid_blacklist hid_bl_item;
 163        struct list_head node;
 164};
 165
 166static LIST_HEAD(dquirks_list);
 167static DECLARE_RWSEM(dquirks_rwsem);
 168
 169/* Runtime ("dynamic") quirks manipulation functions */
 170
 171/**
 172 * usbhid_exists_dquirk: find any dynamic quirks for a USB HID device
 173 * @idVendor: the 16-bit USB vendor ID, in native byteorder
 174 * @idProduct: the 16-bit USB product ID, in native byteorder
 175 *
 176 * Description:
 177 *         Scans dquirks_list for a matching dynamic quirk and returns
 178 *         the pointer to the relevant struct hid_blacklist if found.
 179 *         Must be called with a read lock held on dquirks_rwsem.
 180 *
 181 * Returns: NULL if no quirk found, struct hid_blacklist * if found.
 182 */
 183static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor,
 184                const u16 idProduct)
 185{
 186        struct quirks_list_struct *q;
 187        struct hid_blacklist *bl_entry = NULL;
 188
 189        list_for_each_entry(q, &dquirks_list, node) {
 190                if (q->hid_bl_item.idVendor == idVendor &&
 191                                q->hid_bl_item.idProduct == idProduct) {
 192                        bl_entry = &q->hid_bl_item;
 193                        break;
 194                }
 195        }
 196
 197        if (bl_entry != NULL)
 198                dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
 199                                bl_entry->quirks, bl_entry->idVendor,
 200                                bl_entry->idProduct);
 201
 202        return bl_entry;
 203}
 204
 205
 206/**
 207 * usbhid_modify_dquirk: add/replace a HID quirk
 208 * @idVendor: the 16-bit USB vendor ID, in native byteorder
 209 * @idProduct: the 16-bit USB product ID, in native byteorder
 210 * @quirks: the u32 quirks value to add/replace
 211 *
 212 * Description:
 213 *         If an dynamic quirk exists in memory for this (idVendor,
 214 *         idProduct) pair, replace its quirks value with what was
 215 *         provided.  Otherwise, add the quirk to the dynamic quirks list.
 216 *
 217 * Returns: 0 OK, -error on failure.
 218 */
 219static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct,
 220                                const u32 quirks)
 221{
 222        struct quirks_list_struct *q_new, *q;
 223        int list_edited = 0;
 224
 225        if (!idVendor) {
 226                dbg_hid("Cannot add a quirk with idVendor = 0\n");
 227                return -EINVAL;
 228        }
 229
 230        q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL);
 231        if (!q_new) {
 232                dbg_hid("Could not allocate quirks_list_struct\n");
 233                return -ENOMEM;
 234        }
 235
 236        q_new->hid_bl_item.idVendor = idVendor;
 237        q_new->hid_bl_item.idProduct = idProduct;
 238        q_new->hid_bl_item.quirks = quirks;
 239
 240        down_write(&dquirks_rwsem);
 241
 242        list_for_each_entry(q, &dquirks_list, node) {
 243
 244                if (q->hid_bl_item.idVendor == idVendor &&
 245                                q->hid_bl_item.idProduct == idProduct) {
 246
 247                        list_replace(&q->node, &q_new->node);
 248                        kfree(q);
 249                        list_edited = 1;
 250                        break;
 251
 252                }
 253
 254        }
 255
 256        if (!list_edited)
 257                list_add_tail(&q_new->node, &dquirks_list);
 258
 259        up_write(&dquirks_rwsem);
 260
 261        return 0;
 262}
 263
 264/**
 265 * usbhid_remove_all_dquirks: remove all runtime HID quirks from memory
 266 *
 267 * Description:
 268 *         Free all memory associated with dynamic quirks - called before
 269 *         module unload.
 270 *
 271 */
 272static void usbhid_remove_all_dquirks(void)
 273{
 274        struct quirks_list_struct *q, *temp;
 275
 276        down_write(&dquirks_rwsem);
 277        list_for_each_entry_safe(q, temp, &dquirks_list, node) {
 278                list_del(&q->node);
 279                kfree(q);
 280        }
 281        up_write(&dquirks_rwsem);
 282
 283}
 284
 285/** 
 286 * usbhid_quirks_init: apply USB HID quirks specified at module load time
 287 */
 288int usbhid_quirks_init(char **quirks_param)
 289{
 290        u16 idVendor, idProduct;
 291        u32 quirks;
 292        int n = 0, m;
 293
 294        for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) {
 295
 296                m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
 297                                &idVendor, &idProduct, &quirks);
 298
 299                if (m != 3 ||
 300                                usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) {
 301                        printk(KERN_WARNING
 302                                        "Could not parse HID quirk module param %s\n",
 303                                        quirks_param[n]);
 304                }
 305        }
 306
 307        return 0;
 308}
 309
 310/**
 311 * usbhid_quirks_exit: release memory associated with dynamic_quirks
 312 *
 313 * Description:
 314 *     Release all memory associated with dynamic quirks.  Called upon
 315 *     module unload.
 316 *
 317 * Returns: nothing
 318 */
 319void usbhid_quirks_exit(void)
 320{
 321        usbhid_remove_all_dquirks();
 322}
 323
 324/**
 325 * usbhid_exists_squirk: return any static quirks for a USB HID device
 326 * @idVendor: the 16-bit USB vendor ID, in native byteorder
 327 * @idProduct: the 16-bit USB product ID, in native byteorder
 328 *
 329 * Description:
 330 *     Given a USB vendor ID and product ID, return a pointer to
 331 *     the hid_blacklist entry associated with that device.
 332 *
 333 * Returns: pointer if quirk found, or NULL if no quirks found.
 334 */
 335static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor,
 336                const u16 idProduct)
 337{
 338        const struct hid_blacklist *bl_entry = NULL;
 339        int n = 0;
 340
 341        for (; hid_blacklist[n].idVendor; n++)
 342                if (hid_blacklist[n].idVendor == idVendor &&
 343                        (hid_blacklist[n].idProduct == (__u16) HID_ANY_ID ||
 344                                hid_blacklist[n].idProduct == idProduct))
 345                        bl_entry = &hid_blacklist[n];
 346
 347        if (bl_entry != NULL)
 348                dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
 349                                bl_entry->quirks, bl_entry->idVendor, 
 350                                bl_entry->idProduct);
 351        return bl_entry;
 352}
 353
 354/**
 355 * usbhid_lookup_quirk: return any quirks associated with a USB HID device
 356 * @idVendor: the 16-bit USB vendor ID, in native byteorder
 357 * @idProduct: the 16-bit USB product ID, in native byteorder
 358 *
 359 * Description:
 360 *     Given a USB vendor ID and product ID, return any quirks associated
 361 *     with that device.
 362 *
 363 * Returns: a u32 quirks value.
 364 */
 365u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct)
 366{
 367        u32 quirks = 0;
 368        const struct hid_blacklist *bl_entry = NULL;
 369
 370        /* NCR devices must not be queried for reports */
 371        if (idVendor == USB_VENDOR_ID_NCR &&
 372                        idProduct >= USB_DEVICE_ID_NCR_FIRST &&
 373                        idProduct <= USB_DEVICE_ID_NCR_LAST)
 374                        return HID_QUIRK_NO_INIT_REPORTS;
 375
 376        down_read(&dquirks_rwsem);
 377        bl_entry = usbhid_exists_dquirk(idVendor, idProduct);
 378        if (!bl_entry)
 379                bl_entry = usbhid_exists_squirk(idVendor, idProduct);
 380        if (bl_entry)
 381                quirks = bl_entry->quirks;
 382        up_read(&dquirks_rwsem);
 383
 384        return quirks;
 385}
 386
 387EXPORT_SYMBOL_GPL(usbhid_lookup_quirk);
 388