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![Greg Kroah-Hartman](/assets/img/avatar_default.png)
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
232 lines
5.4 KiB
C
232 lines
5.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Roccat KonePure driver for Linux
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*
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* Copyright (c) 2012 Stefan Achatz <erazor_de@users.sourceforge.net>
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*/
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/*
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*/
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/*
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* Roccat KonePure is a smaller version of KoneXTD with less buttons and lights.
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*/
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#include <linux/types.h>
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#include <linux/device.h>
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#include <linux/input.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/hid-roccat.h>
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#include "hid-ids.h"
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#include "hid-roccat-common.h"
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enum {
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KONEPURE_MOUSE_REPORT_NUMBER_BUTTON = 3,
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};
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struct konepure_mouse_report_button {
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uint8_t report_number; /* always KONEPURE_MOUSE_REPORT_NUMBER_BUTTON */
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uint8_t zero;
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uint8_t type;
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uint8_t data1;
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uint8_t data2;
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uint8_t zero2;
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uint8_t unknown[2];
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} __packed;
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static struct class *konepure_class;
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ROCCAT_COMMON2_BIN_ATTRIBUTE_W(control, 0x04, 0x03);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(actual_profile, 0x05, 0x03);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile_settings, 0x06, 0x1f);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile_buttons, 0x07, 0x3b);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_W(macro, 0x08, 0x0822);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(info, 0x09, 0x06);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(tcu, 0x0c, 0x04);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_R(tcu_image, 0x0c, 0x0404);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(sensor, 0x0f, 0x06);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_W(talk, 0x10, 0x10);
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static struct bin_attribute *konepure_bin_attrs[] = {
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&bin_attr_actual_profile,
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&bin_attr_control,
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&bin_attr_info,
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&bin_attr_talk,
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&bin_attr_macro,
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&bin_attr_sensor,
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&bin_attr_tcu,
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&bin_attr_tcu_image,
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&bin_attr_profile_settings,
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&bin_attr_profile_buttons,
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NULL,
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};
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static const struct attribute_group konepure_group = {
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.bin_attrs = konepure_bin_attrs,
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};
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static const struct attribute_group *konepure_groups[] = {
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&konepure_group,
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NULL,
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};
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static int konepure_init_specials(struct hid_device *hdev)
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{
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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struct usb_device *usb_dev = interface_to_usbdev(intf);
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struct roccat_common2_device *konepure;
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int retval;
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= USB_INTERFACE_PROTOCOL_MOUSE) {
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hid_set_drvdata(hdev, NULL);
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return 0;
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}
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konepure = kzalloc(sizeof(*konepure), GFP_KERNEL);
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if (!konepure) {
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hid_err(hdev, "can't alloc device descriptor\n");
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return -ENOMEM;
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}
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hid_set_drvdata(hdev, konepure);
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retval = roccat_common2_device_init_struct(usb_dev, konepure);
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if (retval) {
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hid_err(hdev, "couldn't init KonePure device\n");
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goto exit_free;
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}
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retval = roccat_connect(konepure_class, hdev,
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sizeof(struct konepure_mouse_report_button));
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if (retval < 0) {
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hid_err(hdev, "couldn't init char dev\n");
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} else {
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konepure->chrdev_minor = retval;
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konepure->roccat_claimed = 1;
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}
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return 0;
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exit_free:
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kfree(konepure);
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return retval;
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}
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static void konepure_remove_specials(struct hid_device *hdev)
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{
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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struct roccat_common2_device *konepure;
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= USB_INTERFACE_PROTOCOL_MOUSE)
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return;
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konepure = hid_get_drvdata(hdev);
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if (konepure->roccat_claimed)
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roccat_disconnect(konepure->chrdev_minor);
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kfree(konepure);
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}
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static int konepure_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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int retval;
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if (!hid_is_usb(hdev))
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return -EINVAL;
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retval = hid_parse(hdev);
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if (retval) {
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hid_err(hdev, "parse failed\n");
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goto exit;
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}
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retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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if (retval) {
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hid_err(hdev, "hw start failed\n");
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goto exit;
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}
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retval = konepure_init_specials(hdev);
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if (retval) {
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hid_err(hdev, "couldn't install mouse\n");
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goto exit_stop;
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}
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return 0;
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exit_stop:
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hid_hw_stop(hdev);
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exit:
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return retval;
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}
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static void konepure_remove(struct hid_device *hdev)
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{
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konepure_remove_specials(hdev);
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hid_hw_stop(hdev);
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}
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static int konepure_raw_event(struct hid_device *hdev,
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struct hid_report *report, u8 *data, int size)
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{
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struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
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struct roccat_common2_device *konepure = hid_get_drvdata(hdev);
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= USB_INTERFACE_PROTOCOL_MOUSE)
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return 0;
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if (data[0] != KONEPURE_MOUSE_REPORT_NUMBER_BUTTON)
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return 0;
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if (konepure != NULL && konepure->roccat_claimed)
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roccat_report_event(konepure->chrdev_minor, data);
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return 0;
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}
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static const struct hid_device_id konepure_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, konepure_devices);
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static struct hid_driver konepure_driver = {
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.name = "konepure",
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.id_table = konepure_devices,
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.probe = konepure_probe,
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.remove = konepure_remove,
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.raw_event = konepure_raw_event
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};
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static int __init konepure_init(void)
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{
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int retval;
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konepure_class = class_create(THIS_MODULE, "konepure");
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if (IS_ERR(konepure_class))
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return PTR_ERR(konepure_class);
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konepure_class->dev_groups = konepure_groups;
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retval = hid_register_driver(&konepure_driver);
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if (retval)
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class_destroy(konepure_class);
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return retval;
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}
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static void __exit konepure_exit(void)
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{
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hid_unregister_driver(&konepure_driver);
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class_destroy(konepure_class);
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}
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module_init(konepure_init);
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module_exit(konepure_exit);
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MODULE_AUTHOR("Stefan Achatz");
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MODULE_DESCRIPTION("USB Roccat KonePure/Optical driver");
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MODULE_LICENSE("GPL v2");
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