linux-kernel - hid device not claimed but /dev/input/event exists

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <47BB041F.4060003@dbservice.com>
Date:	Tue, 19 Feb 2008 17:30:23 +0100
From:	Tomas Carnecky <tom@...ervice.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: hid device not claimed but /dev/input/event exists

kernel 2.6.25-rc2

usb 1-2.2: new full speed USB device using ehci_hcd and address 6
usb 1-2.2: configuration #1 chosen from 1 choice
HID device claimed by neither input, hiddev nor hidraw
input: Logitech Z-10 USB Speaker as
/devices/pci0000:00/0000:00:02.1/usb1/1-2/1-2.2/1-2.2:1.3/input/input4
input: USB HID v1.10 Device [Logitech Z-10 USB Speaker] on
usb-0000:00:02.1-2.2

Nobody claims the device and yet an evdev device shows up in /dev/input? 
That device reports ~8 EV_KEY event codes, which is about right, but 
pressing these buttons doesn't generate any events.
The audio part of the device works ok with the alsa-usb-audio driver.
Though sometimes it locks up, when I try to change the volume of the
speaker through the gnome-volume dialog. When that happens, lsusb
becomes _very_ slow and eventually times out (cannot read device status,
Connection timed out (110)), I also see some of these messages in dmesg:
usb 1-2.2: usbfs: USBDEVFS_CONTROL failed cmd lsusb rqt 128 rq 6 len 255
ret -110 (with different 'len' values). To reset the device I have to
plug it out and in again.

I enabled HID_DEBUG, but no debug messages show up in my dmesg output,
which is strange. Attached is lsusb of the device.

tom

View attachment "logitech-z10-lsusb" of type "text/plain" (11400 bytes)