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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
241 lines
5.7 KiB
C
241 lines
5.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Roccat Ryos driver for Linux
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*
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* Copyright (c) 2013 Stefan Achatz <erazor_de@users.sourceforge.net>
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*/
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/*
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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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RYOS_REPORT_NUMBER_SPECIAL = 3,
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RYOS_USB_INTERFACE_PROTOCOL = 0,
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};
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struct ryos_report_special {
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uint8_t number; /* RYOS_REPORT_NUMBER_SPECIAL */
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uint8_t data[4];
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} __packed;
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static struct class *ryos_class;
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ROCCAT_COMMON2_BIN_ATTRIBUTE_W(control, 0x04, 0x03);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(profile, 0x05, 0x03);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_primary, 0x06, 0x7d);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_function, 0x07, 0x5f);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_macro, 0x08, 0x23);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_thumbster, 0x09, 0x17);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_extra, 0x0a, 0x08);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(keys_easyzone, 0x0b, 0x126);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(key_mask, 0x0c, 0x06);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(light, 0x0d, 0x10);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(macro, 0x0e, 0x7d2);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_R(info, 0x0f, 0x08);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_W(reset, 0x11, 0x03);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_W(light_control, 0x13, 0x08);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_W(talk, 0x16, 0x10);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(stored_lights, 0x17, 0x0566);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_W(custom_lights, 0x18, 0x14);
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ROCCAT_COMMON2_BIN_ATTRIBUTE_RW(light_macro, 0x19, 0x07d2);
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static struct bin_attribute *ryos_bin_attrs[] = {
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&bin_attr_control,
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&bin_attr_profile,
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&bin_attr_keys_primary,
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&bin_attr_keys_function,
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&bin_attr_keys_macro,
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&bin_attr_keys_thumbster,
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&bin_attr_keys_extra,
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&bin_attr_keys_easyzone,
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&bin_attr_key_mask,
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&bin_attr_light,
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&bin_attr_macro,
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&bin_attr_info,
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&bin_attr_reset,
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&bin_attr_light_control,
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&bin_attr_talk,
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&bin_attr_stored_lights,
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&bin_attr_custom_lights,
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&bin_attr_light_macro,
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NULL,
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};
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static const struct attribute_group ryos_group = {
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.bin_attrs = ryos_bin_attrs,
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};
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static const struct attribute_group *ryos_groups[] = {
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&ryos_group,
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NULL,
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};
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static int ryos_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 *ryos;
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int retval;
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= RYOS_USB_INTERFACE_PROTOCOL) {
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hid_set_drvdata(hdev, NULL);
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return 0;
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}
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ryos = kzalloc(sizeof(*ryos), GFP_KERNEL);
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if (!ryos) {
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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, ryos);
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retval = roccat_common2_device_init_struct(usb_dev, ryos);
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if (retval) {
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hid_err(hdev, "couldn't init Ryos device\n");
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goto exit_free;
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}
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retval = roccat_connect(ryos_class, hdev,
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sizeof(struct ryos_report_special));
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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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ryos->chrdev_minor = retval;
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ryos->roccat_claimed = 1;
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}
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return 0;
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exit_free:
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kfree(ryos);
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return retval;
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}
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static void ryos_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 *ryos;
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= RYOS_USB_INTERFACE_PROTOCOL)
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return;
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ryos = hid_get_drvdata(hdev);
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if (ryos->roccat_claimed)
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roccat_disconnect(ryos->chrdev_minor);
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kfree(ryos);
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}
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static int ryos_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 = ryos_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 ryos_remove(struct hid_device *hdev)
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{
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ryos_remove_specials(hdev);
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hid_hw_stop(hdev);
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}
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static int ryos_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 *ryos = hid_get_drvdata(hdev);
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if (intf->cur_altsetting->desc.bInterfaceProtocol
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!= RYOS_USB_INTERFACE_PROTOCOL)
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return 0;
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if (data[0] != RYOS_REPORT_NUMBER_SPECIAL)
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return 0;
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if (ryos != NULL && ryos->roccat_claimed)
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roccat_report_event(ryos->chrdev_minor, data);
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return 0;
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}
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static const struct hid_device_id ryos_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, ryos_devices);
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static struct hid_driver ryos_driver = {
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.name = "ryos",
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.id_table = ryos_devices,
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.probe = ryos_probe,
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.remove = ryos_remove,
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.raw_event = ryos_raw_event
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};
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static int __init ryos_init(void)
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{
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int retval;
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ryos_class = class_create(THIS_MODULE, "ryos");
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if (IS_ERR(ryos_class))
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return PTR_ERR(ryos_class);
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ryos_class->dev_groups = ryos_groups;
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retval = hid_register_driver(&ryos_driver);
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if (retval)
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class_destroy(ryos_class);
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return retval;
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}
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static void __exit ryos_exit(void)
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{
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hid_unregister_driver(&ryos_driver);
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class_destroy(ryos_class);
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}
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module_init(ryos_init);
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module_exit(ryos_exit);
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MODULE_AUTHOR("Stefan Achatz");
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MODULE_DESCRIPTION("USB Roccat Ryos MK/Glow/Pro driver");
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MODULE_LICENSE("GPL v2");
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