44cb2db10d
Check whether index is within bounds before testing the element. declared in drivers/hid/usbhid/hid-core.c:62: static char *quirks_param[MAX_USBHID_BOOT_QUIRKS] = ... Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
296 lines
9 KiB
C
296 lines
9 KiB
C
/*
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* USB HID quirks support for Linux
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*
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* Copyright (c) 1999 Andreas Gal
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* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
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* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
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* Copyright (c) 2006-2007 Jiri Kosina
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* Copyright (c) 2007 Paul Walmsley
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/hid.h>
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#include "../hid-ids.h"
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/*
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* Alphabetically sorted blacklist by quirk type.
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*/
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static const struct hid_blacklist {
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__u16 idVendor;
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__u16 idProduct;
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__u32 quirks;
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} hid_blacklist[] = {
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{ USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_GAMEPAD, HID_QUIRK_BADPAD },
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{ USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_PREDATOR, HID_QUIRK_BADPAD },
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{ USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
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{ USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
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{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
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{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
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{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
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{ USB_VENDOR_ID_NATSU, USB_DEVICE_ID_NATSU_GAMEPAD, HID_QUIRK_BADPAD },
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{ USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
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{ USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
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{ USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
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{ USB_VENDOR_ID_AFATECH, USB_DEVICE_ID_AFATECH_AF9016, HID_QUIRK_FULLSPEED_INTERVAL },
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{ USB_VENDOR_ID_PANTHERLORD, USB_DEVICE_ID_PANTHERLORD_TWIN_USB_JOYSTICK, HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
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{ USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII, HID_QUIRK_MULTI_INPUT },
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{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_COMBATSTICK, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_FLIGHT_SIM_YOKE, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_CH, USB_DEVICE_ID_CH_PRO_PEDALS, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_DMI, USB_DEVICE_ID_DMI_ENC, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2700, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_KEYBOARD, HID_QUIRK_NOGET },
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{ USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209, HID_QUIRK_MULTI_INPUT },
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{ USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT | HID_QUIRK_SKIP_OUTPUT_REPORTS },
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{ USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_QUAD_USB_JOYPAD, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
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{ USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
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{ USB_VENDOR_ID_WISEGROUP_LTD2, USB_DEVICE_ID_SMARTJOY_DUAL_PLUS, HID_QUIRK_NOGET | HID_QUIRK_MULTI_INPUT },
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{ 0, 0 }
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};
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/* Dynamic HID quirks list - specified at runtime */
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struct quirks_list_struct {
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struct hid_blacklist hid_bl_item;
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struct list_head node;
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};
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static LIST_HEAD(dquirks_list);
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static DECLARE_RWSEM(dquirks_rwsem);
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/* Runtime ("dynamic") quirks manipulation functions */
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/**
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* usbhid_exists_dquirk: find any dynamic quirks for a USB HID device
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* @idVendor: the 16-bit USB vendor ID, in native byteorder
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* @idProduct: the 16-bit USB product ID, in native byteorder
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*
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* Description:
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* Scans dquirks_list for a matching dynamic quirk and returns
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* the pointer to the relevant struct hid_blacklist if found.
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* Must be called with a read lock held on dquirks_rwsem.
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*
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* Returns: NULL if no quirk found, struct hid_blacklist * if found.
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*/
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static struct hid_blacklist *usbhid_exists_dquirk(const u16 idVendor,
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const u16 idProduct)
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{
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struct quirks_list_struct *q;
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struct hid_blacklist *bl_entry = NULL;
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list_for_each_entry(q, &dquirks_list, node) {
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if (q->hid_bl_item.idVendor == idVendor &&
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q->hid_bl_item.idProduct == idProduct) {
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bl_entry = &q->hid_bl_item;
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break;
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}
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}
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if (bl_entry != NULL)
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dbg_hid("Found dynamic quirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
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bl_entry->quirks, bl_entry->idVendor,
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bl_entry->idProduct);
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return bl_entry;
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}
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/**
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* usbhid_modify_dquirk: add/replace a HID quirk
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* @idVendor: the 16-bit USB vendor ID, in native byteorder
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* @idProduct: the 16-bit USB product ID, in native byteorder
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* @quirks: the u32 quirks value to add/replace
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*
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* Description:
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* If an dynamic quirk exists in memory for this (idVendor,
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* idProduct) pair, replace its quirks value with what was
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* provided. Otherwise, add the quirk to the dynamic quirks list.
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*
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* Returns: 0 OK, -error on failure.
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*/
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static int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct,
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const u32 quirks)
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{
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struct quirks_list_struct *q_new, *q;
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int list_edited = 0;
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if (!idVendor) {
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dbg_hid("Cannot add a quirk with idVendor = 0\n");
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return -EINVAL;
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}
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q_new = kmalloc(sizeof(struct quirks_list_struct), GFP_KERNEL);
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if (!q_new) {
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dbg_hid("Could not allocate quirks_list_struct\n");
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return -ENOMEM;
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}
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q_new->hid_bl_item.idVendor = idVendor;
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q_new->hid_bl_item.idProduct = idProduct;
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q_new->hid_bl_item.quirks = quirks;
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down_write(&dquirks_rwsem);
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list_for_each_entry(q, &dquirks_list, node) {
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if (q->hid_bl_item.idVendor == idVendor &&
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q->hid_bl_item.idProduct == idProduct) {
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list_replace(&q->node, &q_new->node);
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kfree(q);
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list_edited = 1;
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break;
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}
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}
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if (!list_edited)
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list_add_tail(&q_new->node, &dquirks_list);
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up_write(&dquirks_rwsem);
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return 0;
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}
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/**
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* usbhid_remove_all_dquirks: remove all runtime HID quirks from memory
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*
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* Description:
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* Free all memory associated with dynamic quirks - called before
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* module unload.
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*
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*/
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static void usbhid_remove_all_dquirks(void)
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{
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struct quirks_list_struct *q, *temp;
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down_write(&dquirks_rwsem);
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list_for_each_entry_safe(q, temp, &dquirks_list, node) {
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list_del(&q->node);
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kfree(q);
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}
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up_write(&dquirks_rwsem);
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}
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/**
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* usbhid_quirks_init: apply USB HID quirks specified at module load time
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*/
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int usbhid_quirks_init(char **quirks_param)
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{
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u16 idVendor, idProduct;
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u32 quirks;
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int n = 0, m;
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for (; n < MAX_USBHID_BOOT_QUIRKS && quirks_param[n]; n++) {
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m = sscanf(quirks_param[n], "0x%hx:0x%hx:0x%x",
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&idVendor, &idProduct, &quirks);
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if (m != 3 ||
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usbhid_modify_dquirk(idVendor, idProduct, quirks) != 0) {
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printk(KERN_WARNING
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"Could not parse HID quirk module param %s\n",
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quirks_param[n]);
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}
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}
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return 0;
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}
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/**
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* usbhid_quirks_exit: release memory associated with dynamic_quirks
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*
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* Description:
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* Release all memory associated with dynamic quirks. Called upon
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* module unload.
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*
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* Returns: nothing
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*/
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void usbhid_quirks_exit(void)
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{
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usbhid_remove_all_dquirks();
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}
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/**
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* usbhid_exists_squirk: return any static quirks for a USB HID device
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* @idVendor: the 16-bit USB vendor ID, in native byteorder
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* @idProduct: the 16-bit USB product ID, in native byteorder
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*
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* Description:
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* Given a USB vendor ID and product ID, return a pointer to
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* the hid_blacklist entry associated with that device.
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*
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* Returns: pointer if quirk found, or NULL if no quirks found.
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*/
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static const struct hid_blacklist *usbhid_exists_squirk(const u16 idVendor,
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const u16 idProduct)
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{
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const struct hid_blacklist *bl_entry = NULL;
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int n = 0;
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for (; hid_blacklist[n].idVendor; n++)
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if (hid_blacklist[n].idVendor == idVendor &&
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hid_blacklist[n].idProduct == idProduct)
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bl_entry = &hid_blacklist[n];
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if (bl_entry != NULL)
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dbg_hid("Found squirk 0x%x for USB HID vendor 0x%hx prod 0x%hx\n",
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bl_entry->quirks, bl_entry->idVendor,
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bl_entry->idProduct);
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return bl_entry;
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}
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/**
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* usbhid_lookup_quirk: return any quirks associated with a USB HID device
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* @idVendor: the 16-bit USB vendor ID, in native byteorder
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* @idProduct: the 16-bit USB product ID, in native byteorder
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*
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* Description:
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* Given a USB vendor ID and product ID, return any quirks associated
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* with that device.
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*
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* Returns: a u32 quirks value.
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*/
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u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct)
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{
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u32 quirks = 0;
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const struct hid_blacklist *bl_entry = NULL;
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/* NCR devices must not be queried for reports */
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if (idVendor == USB_VENDOR_ID_NCR &&
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idProduct >= USB_DEVICE_ID_NCR_FIRST &&
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idProduct <= USB_DEVICE_ID_NCR_LAST)
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return HID_QUIRK_NOGET;
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down_read(&dquirks_rwsem);
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bl_entry = usbhid_exists_dquirk(idVendor, idProduct);
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if (!bl_entry)
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bl_entry = usbhid_exists_squirk(idVendor, idProduct);
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if (bl_entry)
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quirks = bl_entry->quirks;
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up_read(&dquirks_rwsem);
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return quirks;
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}
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EXPORT_SYMBOL_GPL(usbhid_lookup_quirk);
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