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When the Huawei CD30 USB keyboard undergoes 500 reboot cycles, initialization may fail due to a report descriptor problem. The error log is as follows: [pid:175,cpu0,kworker/0:1,6]usb 1-1.2.2: new low-speed USB device number 6 using xhci-hcd [pid:175,cpu0,kworker/0:1,9]usb 1-1.2.2: New USB device found, idVendor=12d1, idProduct=109b, bcdDevice= 1.03 [pid:175,cpu0,kworker/0:1,0]usb 1-1.2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [pid:175,cpu0,kworker/0:1,1]usb 1-1.2.2: Product: HUAWEI USB Wired Keyboard [pid:175,cpu0,kworker/0:1,2]usb 1-1.2.2: Manufacturer: HUAWEI [pid:175,cpu0,kworker/0:1,4]input: HUAWEI HUAWEI USB Wired Keyboard as /devices/platform/efc00000.hisi_usb/efc00000.dwc3/xhci-hcd.1.auto/usb1/1-1/1-1.2/1-1.2.2/1-1.2.2:1.0/0003:12D1:109B.0002/input/input6 [pid:175,cpu0,kworker/0:1,5]hid-generic 0003:12D1:109B.0002: input,hidraw1: USB HID v1.10 Keyboard [HUAWEI HUAWEI USB Wired Keyboard] on usb-xhci-hcd.1.auto-1.2.2/input0 [pid:175,cpu0,kworker/0:1,9]hid-generic 0003:12D1:109B.0003: collection stack underflow [pid:175,cpu0,kworker/0:1,0]hid-generic 0003:12D1:109B.0003: item 0 0 0 12 parsing failed [pid:175,cpu0,kworker/0:1,1]hid-generic: probe of 0003:12D1:109B.0003 failed with error -22 ... When encountering such a situation, fix it with the correct report descriptor. Signed-off-by: Miao Li <limiao@kylinos.cn> Signed-off-by: Jiri Kosina <jkosina@suse.com>
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* HID driver for some huawei "special" devices
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*
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* Copyright (c) 2026 Miao Li <limiao@kylinos.cn>
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*/
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#include <linux/device.h>
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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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static const __u8 huawei_cd30_kbd_rdesc_fixed[] = {
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0x05, 0x01, /* Usage Page (Generic Desktop) */
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0x09, 0x80, /* Usage (System Control) */
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0xa1, 0x01, /* Collection (Application) */
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0x85, 0x01, /* Report ID (1) */
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0x19, 0x81, /* Usage Minimum (System Power Down) */
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0x29, 0x83, /* Usage Maximum (System Wake Up) */
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0x15, 0x00, /* Logical Minimum (0) */
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0x25, 0x01, /* Logical Maximum (1) */
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0x75, 0x01, /* Report Size (1 bit) */
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0x95, 0x03, /* Report Count (3) */
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0x81, 0x02, /* Input (Data,Var,Abs) */
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0x95, 0x05, /* Report Count (5) */
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0x81, 0x01, /* Input (Cnst,Ary,Abs) */
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0xc0, /* End Collection */
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0x05, 0x0c, /* Usage Page (Consumer) */
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0x09, 0x01, /* Usage (Consumer Control) */
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0xa1, 0x01, /* Collection (Application) */
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0x85, 0x02, /* Report ID (2) */
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0x19, 0x00, /* Usage Minimum (0) */
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0x2a, 0x3c, 0x02, /* Usage Maximum (0x023C) */
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0x15, 0x00, /* Logical Minimum (0) */
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0x26, 0x3c, 0x02, /* Logical Maximum (0x023C) */
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0x95, 0x01, /* Report Count (1) */
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0x75, 0x10, /* Report Size (16 bits) */
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0x81, 0x00, /* Input (Data,Ary,Abs) */
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0xc0 /* End Collection */
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};
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static const __u8 *huawei_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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switch (hdev->product) {
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case USB_DEVICE_ID_HUAWEI_CD30KBD:
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if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
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if (*rsize != sizeof(huawei_cd30_kbd_rdesc_fixed) ||
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memcmp(huawei_cd30_kbd_rdesc_fixed, rdesc,
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sizeof(huawei_cd30_kbd_rdesc_fixed)) != 0) {
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hid_info(hdev, "Replacing Huawei cd30 keyboard report descriptor.\n");
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*rsize = sizeof(huawei_cd30_kbd_rdesc_fixed);
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return huawei_cd30_kbd_rdesc_fixed;
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}
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}
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break;
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}
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return rdesc;
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}
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static const struct hid_device_id huawei_devices[] = {
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/* HUAWEI cd30 keyboard */
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{ HID_USB_DEVICE(USB_VENDOR_ID_HUAWEI, USB_DEVICE_ID_HUAWEI_CD30KBD)},
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{ }
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};
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MODULE_DEVICE_TABLE(hid, huawei_devices);
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static struct hid_driver huawei_driver = {
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.name = "huawei",
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.id_table = huawei_devices,
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.report_fixup = huawei_report_fixup,
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};
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module_hid_driver(huawei_driver);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Miao Li <limiao@kylinos.cn>");
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MODULE_DESCRIPTION("HID driver for some huawei \"special\" devices");
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