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Many HID drivers assume that the HID device assigned to them is a USB device as that was the only way HID devices used to be able to be created in Linux. However, with the additional ways that HID devices can be created for many different bus types, that is no longer true, so properly check that we have a USB device associated with the HID device before allowing a driver that makes this assumption to claim it. Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Michael Zaidman <michael.zaidman@gmail.com> Cc: Stefan Achatz <erazor_de@users.sourceforge.net> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@foss.st.com> Cc: linux-input@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> [bentiss: amended for thrustmater.c hunk to apply] Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20211201183503.2373082-3-gregkh@linuxfoundation.org
99 lines
3.0 KiB
C
99 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* HID driver for Holtek gaming mice
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* Copyright (c) 2013 Christian Ohm
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* Heavily inspired by various other HID drivers that adjust the report
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* descriptor.
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*/
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/*
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*/
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include "hid-ids.h"
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/*
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* The report descriptor of some Holtek based gaming mice specifies an
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* excessively large number of consumer usages (2^15), which is more than
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* HID_MAX_USAGES. This prevents proper parsing of the report descriptor.
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*
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* This driver fixes the report descriptor for:
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* - USB ID 04d9:a067, sold as Sharkoon Drakonia and Perixx MX-2000
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* - USB ID 04d9:a04a, sold as Tracer Sniper TRM-503, NOVA Gaming Slider X200
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* and Zalman ZM-GM1
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* - USB ID 04d9:a081, sold as SHARKOON DarkGlider Gaming mouse
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* - USB ID 04d9:a072, sold as LEETGION Hellion Gaming Mouse
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* - USB ID 04d9:a0c2, sold as ETEKCITY Scroll T-140 Gaming Mouse
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*/
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static __u8 *holtek_mouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
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unsigned int *rsize)
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{
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
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/* Change usage maximum and logical maximum from 0x7fff to
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* 0x2fff, so they don't exceed HID_MAX_USAGES */
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switch (hdev->product) {
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067:
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072:
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2:
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if (*rsize >= 122 && rdesc[115] == 0xff && rdesc[116] == 0x7f
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&& rdesc[120] == 0xff && rdesc[121] == 0x7f) {
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hid_info(hdev, "Fixing up report descriptor\n");
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rdesc[116] = rdesc[121] = 0x2f;
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}
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break;
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A:
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070:
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case USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081:
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if (*rsize >= 113 && rdesc[106] == 0xff && rdesc[107] == 0x7f
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&& rdesc[111] == 0xff && rdesc[112] == 0x7f) {
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hid_info(hdev, "Fixing up report descriptor\n");
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rdesc[107] = rdesc[112] = 0x2f;
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}
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break;
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}
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}
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return rdesc;
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}
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static int holtek_mouse_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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if (!hid_is_usb(hdev))
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return -EINVAL;
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return 0;
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}
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static const struct hid_device_id holtek_mouse_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT,
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USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, holtek_mouse_devices);
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static struct hid_driver holtek_mouse_driver = {
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.name = "holtek_mouse",
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.id_table = holtek_mouse_devices,
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.report_fixup = holtek_mouse_report_fixup,
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.probe = holtek_mouse_probe,
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};
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module_hid_driver(holtek_mouse_driver);
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MODULE_LICENSE("GPL");
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