* PROBLEM: HIDRAW: /dev/hidraw* device does not get removed when unplugged
@ 2010-08-11 15:15 Alan Ott
[not found] ` <4C62BE85.2040803-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Alan Ott @ 2010-08-11 15:15 UTC (permalink / raw)
To: linux-input-u79uwXL29TY76Z2rM5mHXA,
linux-usb-u79uwXL29TY76Z2rM5mHXA, Jiri Kosina, Antonio Ospite
Hello,
I'm having a bit of trouble with hidraw (with a USB device) and device
removal. When I remove a device and re-attach it, the original device
does not get removed, and another node is added to /dev.
At boot:
no /dev/hidraw devices exist
attach a device:
/dev/hidraw0 exists
detach the device:
/dev/hidraw0 remains
re-attach the device:
/dev/hidraw0 exists (defunct)
/dev/hidraw1 exists
This is with 2.6.35+ from git, revision 3d30701b58970425e1d, updated
about 30 minutes ago.
Aug 11 11:04:15 ato kernel: [ 109.554287] ------------[ cut here
]------------
Aug 11 11:04:15 ato kernel: [ 109.554300] WARNING: at lib/kobject.c:595
kobject_put+0x50/0x60()
Aug 11 11:04:15 ato kernel: [ 109.554306] Hardware name: GA-MA770T-UD3P
Aug 11 11:04:15 ato kernel: [ 109.554311] kobject: '(null)'
(ffff880244a49898): is not initialized, yet kobject_put() is being called.
Aug 11 11:04:15 ato kernel: [ 109.554317] Modules linked in: usbhid hid
binfmt_misc fbcon tileblit font bitblit softcursor snd_hda_codec_nvhdmi
nouveau snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep
snd_pcm_oss ttm drm_kms_helper snd_mixer_oss snd_pcm drm snd_seq_dummy
snd_seq_oss snd_seq_midi snd_rawmidi ppdev parport_pc snd_seq_midi_event
snd_seq psmouse lp snd_timer parport i2c_algo_bit edac_core video
edac_mce_amd i2c_piix4 snd_seq_device serio_raw snd soundcore
snd_page_alloc output ohci1394 floppy pata_atiixp ieee1394 ahci libahci
r8169 mii
Aug 11 11:04:15 ato kernel: [ 109.554399] Pid: 29, comm: khubd Not
tainted 2.6.35+ #19
Aug 11 11:04:15 ato kernel: [ 109.554404] Call Trace:
Aug 11 11:04:15 ato kernel: [ 109.554416] [<ffffffff8105de1f>]
warn_slowpath_common+0x7f/0xc0
Aug 11 11:04:15 ato kernel: [ 109.554425] [<ffffffff8105df16>]
warn_slowpath_fmt+0x46/0x50
Aug 11 11:04:15 ato kernel: [ 109.554434] [<ffffffff812a47c0>]
kobject_put+0x50/0x60
Aug 11 11:04:15 ato kernel: [ 109.554442] [<ffffffff8135c6b7>]
put_device+0x17/0x20
Aug 11 11:04:15 ato kernel: [ 109.554455] [<ffffffffa0238998>]
hid_destroy_device+0x48/0x60 [hid]
Aug 11 11:04:15 ato kernel: [ 109.554466] [<ffffffffa00f2aeb>]
usbhid_disconnect+0x2b/0x50 [usbhid]
Aug 11 11:04:15 ato kernel: [ 109.554477] [<ffffffff813d620a>]
usb_unbind_interface+0x5a/0x1a0
Aug 11 11:04:15 ato kernel: [ 109.554487] [<ffffffff81360645>]
__device_release_driver+0x75/0xe0
Aug 11 11:04:15 ato kernel: [ 109.554495] [<ffffffff813607ad>]
device_release_driver+0x2d/0x40
Aug 11 11:04:15 ato kernel: [ 109.554503] [<ffffffff8135f79e>]
bus_remove_device+0xae/0xf0
Aug 11 11:04:15 ato kernel: [ 109.554510] [<ffffffff8135d437>]
device_del+0x127/0x1d0
Aug 11 11:04:15 ato kernel: [ 109.554519] [<ffffffff813d2b88>]
usb_disable_device+0xa8/0x130
Aug 11 11:04:15 ato kernel: [ 109.554527] [<ffffffff813cbe65>]
usb_disconnect+0x95/0x130
Aug 11 11:04:15 ato kernel: [ 109.554535] [<ffffffff813cd51d>]
hub_thread+0x48d/0x1210
Aug 11 11:04:15 ato kernel: [ 109.554544] [<ffffffff8105771b>] ?
dequeue_task_fair+0x8b/0x90
Aug 11 11:04:15 ato kernel: [ 109.554555] [<ffffffff8107e490>] ?
autoremove_wake_function+0x0/0x40
Aug 11 11:04:15 ato kernel: [ 109.554563] [<ffffffff813cd090>] ?
hub_thread+0x0/0x1210
Aug 11 11:04:15 ato kernel: [ 109.554571] [<ffffffff8107df36>]
kthread+0x96/0xa0
Aug 11 11:04:15 ato kernel: [ 109.554580] [<ffffffff8100be64>]
kernel_thread_helper+0x4/0x10
Aug 11 11:04:15 ato kernel: [ 109.554588] [<ffffffff8107dea0>] ?
kthread+0x0/0xa0
Aug 11 11:04:15 ato kernel: [ 109.554595] [<ffffffff8100be60>] ?
kernel_thread_helper+0x0/0x10
Aug 11 11:04:15 ato kernel: [ 109.554601] ---[ end trace
212263bbb326ec69 ]---
Aug 11 11:04:21 ato kernel: [ 116.450553] usb 1-5.4: new full speed USB
device using ehci_hcd and address 7
Aug 11 11:04:22 ato kernel: [ 116.576230] generic-usb
0003:04D8:003F.0002: hiddev0,hidraw1: USB HID v1.11 Device [Microchip
Technology Inc. Simple HID Device Demo] on usb-0000:00:12.2-5.4/input0
Aug 11 11:04:23 ato kernel: [ 117.746427] usb 1-5.4: USB disconnect,
address 7
Aug 11 11:04:23 ato kernel: [ 117.746500] ------------[ cut here
]------------
lan@ato:~/work/linux-2.6$ scripts/ver_linux
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
Linux ato 2.6.35+ #19 SMP Wed Aug 11 10:53:49 EDT 2010 x86_64 GNU/Linux
Gnu C 4.4.3
Gnu make 3.81
binutils 2.20.1
util-linux 2.17.2
mount support
module-init-tools 3.11.1
e2fsprogs 1.41.11
pcmciautils 014
Linux C Library 2.11.1
Dynamic linker (ldd) 2.11.1
Procps 3.2.8
Net-tools 1.60
Kbd 1.15
Sh-utils 7.4
wireless-tools 30
Modules Loaded usbhid hid binfmt_misc fbcon tileblit font
bitblit softcursor snd_hda_codec_nvhdmi nouveau snd_hda_codec_realtek
snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss ttm drm_kms_helper
snd_mixer_oss snd_pcm drm snd_seq_dummy snd_seq_oss snd_seq_midi
snd_rawmidi ppdev parport_pc snd_seq_midi_event snd_seq psmouse lp
snd_timer parport i2c_algo_bit edac_core video edac_mce_amd i2c_piix4
snd_seq_device serio_raw snd soundcore snd_page_alloc output ohci1394
floppy pata_atiixp ieee1394 ahci libahci r8169 mii
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 4+ messages in thread[parent not found: <4C62BE85.2040803-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>]
* Re: PROBLEM: HIDRAW: /dev/hidraw* device does not get removed when unplugged [not found] ` <4C62BE85.2040803-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org> @ 2010-08-11 15:21 ` Jiri Kosina [not found] ` <alpine.LNX.2.00.1008111720300.2702-ztGlSCb7Y1iN3ZZ/Hiejyg@public.gmane.org> 0 siblings, 1 reply; 4+ messages in thread From: Jiri Kosina @ 2010-08-11 15:21 UTC (permalink / raw) To: Alan Ott Cc: linux-input-u79uwXL29TY76Z2rM5mHXA, linux-usb-u79uwXL29TY76Z2rM5mHXA, Antonio Ospite On Wed, 11 Aug 2010, Alan Ott wrote: > Hello, > > I'm having a bit of trouble with hidraw (with a USB device) and device > removal. When I remove a device and re-attach it, the original device does not > get removed, and another node is added to /dev. > > At boot: > no /dev/hidraw devices exist > > attach a device: > /dev/hidraw0 exists > > detach the device: > /dev/hidraw0 remains > > re-attach the device: > /dev/hidraw0 exists (defunct) > /dev/hidraw1 exists > > This is with 2.6.35+ from git, revision 3d30701b58970425e1d, updated about 30 > minutes ago. > > Aug 11 11:04:15 ato kernel: [ 109.554287] ------------[ cut here > ]------------ > Aug 11 11:04:15 ato kernel: [ 109.554300] WARNING: at lib/kobject.c:595 > kobject_put+0x50/0x60() > Aug 11 11:04:15 ato kernel: [ 109.554306] Hardware name: GA-MA770T-UD3P > Aug 11 11:04:15 ato kernel: [ 109.554311] kobject: '(null)' > (ffff880244a49898): is not initialized, yet kobject_put() is being called. > Aug 11 11:04:15 ato kernel: [ 109.554317] Modules linked in: usbhid hid > binfmt_misc fbcon tileblit font bitblit softcursor snd_hda_codec_nvhdmi > nouveau snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep > snd_pcm_oss ttm drm_kms_helper snd_mixer_oss snd_pcm drm snd_seq_dummy > snd_seq_oss snd_seq_midi snd_rawmidi ppdev parport_pc snd_seq_midi_event > snd_seq psmouse lp snd_timer parport i2c_algo_bit edac_core video edac_mce_amd > i2c_piix4 snd_seq_device serio_raw snd soundcore snd_page_alloc output > ohci1394 floppy pata_atiixp ieee1394 ahci libahci r8169 mii > Aug 11 11:04:15 ato kernel: [ 109.554399] Pid: 29, comm: khubd Not tainted > 2.6.35+ #19 > Aug 11 11:04:15 ato kernel: [ 109.554404] Call Trace: > Aug 11 11:04:15 ato kernel: [ 109.554416] [<ffffffff8105de1f>] > warn_slowpath_common+0x7f/0xc0 > Aug 11 11:04:15 ato kernel: [ 109.554425] [<ffffffff8105df16>] > warn_slowpath_fmt+0x46/0x50 > Aug 11 11:04:15 ato kernel: [ 109.554434] [<ffffffff812a47c0>] > kobject_put+0x50/0x60 > Aug 11 11:04:15 ato kernel: [ 109.554442] [<ffffffff8135c6b7>] > put_device+0x17/0x20 > Aug 11 11:04:15 ato kernel: [ 109.554455] [<ffffffffa0238998>] > hid_destroy_device+0x48/0x60 [hid] > Aug 11 11:04:15 ato kernel: [ 109.554466] [<ffffffffa00f2aeb>] > usbhid_disconnect+0x2b/0x50 [usbhid] > Aug 11 11:04:15 ato kernel: [ 109.554477] [<ffffffff813d620a>] > usb_unbind_interface+0x5a/0x1a0 > Aug 11 11:04:15 ato kernel: [ 109.554487] [<ffffffff81360645>] > __device_release_driver+0x75/0xe0 > Aug 11 11:04:15 ato kernel: [ 109.554495] [<ffffffff813607ad>] > device_release_driver+0x2d/0x40 > Aug 11 11:04:15 ato kernel: [ 109.554503] [<ffffffff8135f79e>] > bus_remove_device+0xae/0xf0 > Aug 11 11:04:15 ato kernel: [ 109.554510] [<ffffffff8135d437>] > device_del+0x127/0x1d0 > Aug 11 11:04:15 ato kernel: [ 109.554519] [<ffffffff813d2b88>] > usb_disable_device+0xa8/0x130 > Aug 11 11:04:15 ato kernel: [ 109.554527] [<ffffffff813cbe65>] > usb_disconnect+0x95/0x130 > Aug 11 11:04:15 ato kernel: [ 109.554535] [<ffffffff813cd51d>] > hub_thread+0x48d/0x1210 > Aug 11 11:04:15 ato kernel: [ 109.554544] [<ffffffff8105771b>] ? > dequeue_task_fair+0x8b/0x90 > Aug 11 11:04:15 ato kernel: [ 109.554555] [<ffffffff8107e490>] ? > autoremove_wake_function+0x0/0x40 > Aug 11 11:04:15 ato kernel: [ 109.554563] [<ffffffff813cd090>] ? > hub_thread+0x0/0x1210 > Aug 11 11:04:15 ato kernel: [ 109.554571] [<ffffffff8107df36>] > kthread+0x96/0xa0 > Aug 11 11:04:15 ato kernel: [ 109.554580] [<ffffffff8100be64>] > kernel_thread_helper+0x4/0x10 > Aug 11 11:04:15 ato kernel: [ 109.554588] [<ffffffff8107dea0>] ? > kthread+0x0/0xa0 > Aug 11 11:04:15 ato kernel: [ 109.554595] [<ffffffff8100be60>] ? > kernel_thread_helper+0x0/0x10 > Aug 11 11:04:15 ato kernel: [ 109.554601] ---[ end trace 212263bbb326ec69 > ]--- > Aug 11 11:04:21 ato kernel: [ 116.450553] usb 1-5.4: new full speed USB > device using ehci_hcd and address 7 > Aug 11 11:04:22 ato kernel: [ 116.576230] generic-usb 0003:04D8:003F.0002: > hiddev0,hidraw1: USB HID v1.11 Device [Microchip Technology Inc. Simple HID > Device Demo] on usb-0000:00:12.2-5.4/input0 > Aug 11 11:04:23 ato kernel: [ 117.746427] usb 1-5.4: USB disconnect, address > 7 > Aug 11 11:04:23 ato kernel: [ 117.746500] ------------[ cut here > ]------------ > > > lan@ato:~/work/linux-2.6$ scripts/ver_linux > If some fields are empty or look unusual you may have an old version. > Compare to the current minimal requirements in Documentation/Changes. > > Linux ato 2.6.35+ #19 SMP Wed Aug 11 10:53:49 EDT 2010 x86_64 GNU/Linux > > Gnu C 4.4.3 > Gnu make 3.81 > binutils 2.20.1 > util-linux 2.17.2 > mount support > module-init-tools 3.11.1 > e2fsprogs 1.41.11 > pcmciautils 014 > Linux C Library 2.11.1 > Dynamic linker (ldd) 2.11.1 > Procps 3.2.8 > Net-tools 1.60 > Kbd 1.15 > Sh-utils 7.4 > wireless-tools 30 > Modules Loaded usbhid hid binfmt_misc fbcon tileblit font bitblit > softcursor snd_hda_codec_nvhdmi nouveau snd_hda_codec_realtek snd_hda_intel > snd_hda_codec snd_hwdep snd_pcm_oss ttm drm_kms_helper snd_mixer_oss snd_pcm > drm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi ppdev parport_pc > snd_seq_midi_event snd_seq psmouse lp snd_timer parport i2c_algo_bit edac_core > video edac_mce_amd i2c_piix4 snd_seq_device serio_raw snd soundcore > snd_page_alloc output ohci1394 floppy pata_atiixp ieee1394 ahci libahci r8169 > mii This looks very similar to http://lkml.org/lkml/2010/8/10/373 I have not yet root-caused this, but I am not aware of any recent changes in usb-hid that might be causing that, so I suspect some change in USB core. But will have to investigate. -- Jiri Kosina SUSE Labs, Novell Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 4+ messages in thread
[parent not found: <alpine.LNX.2.00.1008111720300.2702-ztGlSCb7Y1iN3ZZ/Hiejyg@public.gmane.org>]
* Re: PROBLEM: HIDRAW: /dev/hidraw* device does not get removed when unplugged [not found] ` <alpine.LNX.2.00.1008111720300.2702-ztGlSCb7Y1iN3ZZ/Hiejyg@public.gmane.org> @ 2010-08-11 15:28 ` Alan Ott 2010-08-12 3:53 ` Alan Ott 0 siblings, 1 reply; 4+ messages in thread From: Alan Ott @ 2010-08-11 15:28 UTC (permalink / raw) To: Jiri Kosina Cc: linux-input-u79uwXL29TY76Z2rM5mHXA, linux-usb-u79uwXL29TY76Z2rM5mHXA, Antonio Ospite On 08/11/2010 11:21 AM, Jiri Kosina wrote: > On Wed, 11 Aug 2010, Alan Ott wrote: > > >> Hello, >> >> I'm having a bit of trouble with hidraw (with a USB device) and device >> removal. When I remove a device and re-attach it, the original device does not >> get removed, and another node is added to /dev. >> >> At boot: >> no /dev/hidraw devices exist >> >> attach a device: >> /dev/hidraw0 exists >> >> detach the device: >> /dev/hidraw0 remains >> >> re-attach the device: >> /dev/hidraw0 exists (defunct) >> /dev/hidraw1 exists >> >> This is with 2.6.35+ from git, revision 3d30701b58970425e1d, updated about 30 >> minutes ago. >> >> Aug 11 11:04:15 ato kernel: [ 109.554287] ------------[ cut here >> ]------------ >> Aug 11 11:04:15 ato kernel: [ 109.554300] WARNING: at lib/kobject.c:595 >> kobject_put+0x50/0x60() >> Aug 11 11:04:15 ato kernel: [ 109.554306] Hardware name: GA-MA770T-UD3P >> Aug 11 11:04:15 ato kernel: [ 109.554311] kobject: '(null)' >> (ffff880244a49898): is not initialized, yet kobject_put() is being called. >> Aug 11 11:04:15 ato kernel: [ 109.554317] Modules linked in: usbhid hid >> binfmt_misc fbcon tileblit font bitblit softcursor snd_hda_codec_nvhdmi >> nouveau snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep >> snd_pcm_oss ttm drm_kms_helper snd_mixer_oss snd_pcm drm snd_seq_dummy >> snd_seq_oss snd_seq_midi snd_rawmidi ppdev parport_pc snd_seq_midi_event >> snd_seq psmouse lp snd_timer parport i2c_algo_bit edac_core video edac_mce_amd >> i2c_piix4 snd_seq_device serio_raw snd soundcore snd_page_alloc output >> ohci1394 floppy pata_atiixp ieee1394 ahci libahci r8169 mii >> Aug 11 11:04:15 ato kernel: [ 109.554399] Pid: 29, comm: khubd Not tainted >> 2.6.35+ #19 >> Aug 11 11:04:15 ato kernel: [ 109.554404] Call Trace: >> Aug 11 11:04:15 ato kernel: [ 109.554416] [<ffffffff8105de1f>] >> warn_slowpath_common+0x7f/0xc0 >> Aug 11 11:04:15 ato kernel: [ 109.554425] [<ffffffff8105df16>] >> warn_slowpath_fmt+0x46/0x50 >> Aug 11 11:04:15 ato kernel: [ 109.554434] [<ffffffff812a47c0>] >> kobject_put+0x50/0x60 >> Aug 11 11:04:15 ato kernel: [ 109.554442] [<ffffffff8135c6b7>] >> put_device+0x17/0x20 >> Aug 11 11:04:15 ato kernel: [ 109.554455] [<ffffffffa0238998>] >> hid_destroy_device+0x48/0x60 [hid] >> Aug 11 11:04:15 ato kernel: [ 109.554466] [<ffffffffa00f2aeb>] >> usbhid_disconnect+0x2b/0x50 [usbhid] >> Aug 11 11:04:15 ato kernel: [ 109.554477] [<ffffffff813d620a>] >> usb_unbind_interface+0x5a/0x1a0 >> Aug 11 11:04:15 ato kernel: [ 109.554487] [<ffffffff81360645>] >> __device_release_driver+0x75/0xe0 >> Aug 11 11:04:15 ato kernel: [ 109.554495] [<ffffffff813607ad>] >> device_release_driver+0x2d/0x40 >> Aug 11 11:04:15 ato kernel: [ 109.554503] [<ffffffff8135f79e>] >> bus_remove_device+0xae/0xf0 >> Aug 11 11:04:15 ato kernel: [ 109.554510] [<ffffffff8135d437>] >> device_del+0x127/0x1d0 >> Aug 11 11:04:15 ato kernel: [ 109.554519] [<ffffffff813d2b88>] >> usb_disable_device+0xa8/0x130 >> Aug 11 11:04:15 ato kernel: [ 109.554527] [<ffffffff813cbe65>] >> usb_disconnect+0x95/0x130 >> Aug 11 11:04:15 ato kernel: [ 109.554535] [<ffffffff813cd51d>] >> hub_thread+0x48d/0x1210 >> Aug 11 11:04:15 ato kernel: [ 109.554544] [<ffffffff8105771b>] ? >> dequeue_task_fair+0x8b/0x90 >> Aug 11 11:04:15 ato kernel: [ 109.554555] [<ffffffff8107e490>] ? >> autoremove_wake_function+0x0/0x40 >> Aug 11 11:04:15 ato kernel: [ 109.554563] [<ffffffff813cd090>] ? >> hub_thread+0x0/0x1210 >> Aug 11 11:04:15 ato kernel: [ 109.554571] [<ffffffff8107df36>] >> kthread+0x96/0xa0 >> Aug 11 11:04:15 ato kernel: [ 109.554580] [<ffffffff8100be64>] >> kernel_thread_helper+0x4/0x10 >> Aug 11 11:04:15 ato kernel: [ 109.554588] [<ffffffff8107dea0>] ? >> kthread+0x0/0xa0 >> Aug 11 11:04:15 ato kernel: [ 109.554595] [<ffffffff8100be60>] ? >> kernel_thread_helper+0x0/0x10 >> Aug 11 11:04:15 ato kernel: [ 109.554601] ---[ end trace 212263bbb326ec69 >> ]--- >> Aug 11 11:04:21 ato kernel: [ 116.450553] usb 1-5.4: new full speed USB >> device using ehci_hcd and address 7 >> Aug 11 11:04:22 ato kernel: [ 116.576230] generic-usb 0003:04D8:003F.0002: >> hiddev0,hidraw1: USB HID v1.11 Device [Microchip Technology Inc. Simple HID >> Device Demo] on usb-0000:00:12.2-5.4/input0 >> Aug 11 11:04:23 ato kernel: [ 117.746427] usb 1-5.4: USB disconnect, address >> 7 >> Aug 11 11:04:23 ato kernel: [ 117.746500] ------------[ cut here >> ]------------ >> >> >> lan@ato:~/work/linux-2.6$ scripts/ver_linux >> If some fields are empty or look unusual you may have an old version. >> Compare to the current minimal requirements in Documentation/Changes. >> >> Linux ato 2.6.35+ #19 SMP Wed Aug 11 10:53:49 EDT 2010 x86_64 GNU/Linux >> >> Gnu C 4.4.3 >> Gnu make 3.81 >> binutils 2.20.1 >> util-linux 2.17.2 >> mount support >> module-init-tools 3.11.1 >> e2fsprogs 1.41.11 >> pcmciautils 014 >> Linux C Library 2.11.1 >> Dynamic linker (ldd) 2.11.1 >> Procps 3.2.8 >> Net-tools 1.60 >> Kbd 1.15 >> Sh-utils 7.4 >> wireless-tools 30 >> Modules Loaded usbhid hid binfmt_misc fbcon tileblit font bitblit >> softcursor snd_hda_codec_nvhdmi nouveau snd_hda_codec_realtek snd_hda_intel >> snd_hda_codec snd_hwdep snd_pcm_oss ttm drm_kms_helper snd_mixer_oss snd_pcm >> drm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi ppdev parport_pc >> snd_seq_midi_event snd_seq psmouse lp snd_timer parport i2c_algo_bit edac_core >> video edac_mce_amd i2c_piix4 snd_seq_device serio_raw snd soundcore >> snd_page_alloc output ohci1394 floppy pata_atiixp ieee1394 ahci libahci r8169 >> mii >> > This looks very similar to http://lkml.org/lkml/2010/8/10/373 > > I have not yet root-caused this, but I am not aware of any recent changes > in usb-hid that might be causing that, so I suspect some change in USB > core. But will have to investigate. > I just tried it with a Bluetooth HID keyboard and it works as expected. I'd suspect it to not be a HID problem. Alan. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: PROBLEM: HIDRAW: /dev/hidraw* device does not get removed when unplugged 2010-08-11 15:28 ` Alan Ott @ 2010-08-12 3:53 ` Alan Ott 0 siblings, 0 replies; 4+ messages in thread From: Alan Ott @ 2010-08-12 3:53 UTC (permalink / raw) To: Jiri Kosina; +Cc: linux-input, linux-usb, Antonio Ospite, Greg KH On 08/11/2010 11:28 AM, Alan Ott wrote: > On 08/11/2010 11:21 AM, Jiri Kosina wrote: >> On Wed, 11 Aug 2010, Alan Ott wrote: >> >>> Hello, >>> >>> I'm having a bit of trouble with hidraw (with a USB device) and device >>> removal. When I remove a device and re-attach it, the original >>> device does not >>> get removed, and another node is added to /dev. >>> >>> At boot: >>> no /dev/hidraw devices exist >>> >>> attach a device: >>> /dev/hidraw0 exists >>> >>> detach the device: >>> /dev/hidraw0 remains >>> >>> re-attach the device: >>> /dev/hidraw0 exists (defunct) >>> /dev/hidraw1 exists >>> >>> This is with 2.6.35+ from git, revision 3d30701b58970425e1d, updated >>> about 30 >>> minutes ago. >>> >>> Aug 11 11:04:15 ato kernel: [ 109.554287] ------------[ cut here >>> ]------------ >>> Aug 11 11:04:15 ato kernel: [ 109.554300] WARNING: at >>> lib/kobject.c:595 >>> kobject_put+0x50/0x60() >>> Aug 11 11:04:15 ato kernel: [ 109.554306] Hardware name: >>> GA-MA770T-UD3P >>> Aug 11 11:04:15 ato kernel: [ 109.554311] kobject: '(null)' >>> (ffff880244a49898): is not initialized, yet kobject_put() is being >>> called. >>> Aug 11 11:04:15 ato kernel: [ 109.554317] Modules linked in: usbhid >>> hid >>> binfmt_misc fbcon tileblit font bitblit softcursor snd_hda_codec_nvhdmi >>> nouveau snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep >>> snd_pcm_oss ttm drm_kms_helper snd_mixer_oss snd_pcm drm snd_seq_dummy >>> snd_seq_oss snd_seq_midi snd_rawmidi ppdev parport_pc >>> snd_seq_midi_event >>> snd_seq psmouse lp snd_timer parport i2c_algo_bit edac_core video >>> edac_mce_amd >>> i2c_piix4 snd_seq_device serio_raw snd soundcore snd_page_alloc output >>> ohci1394 floppy pata_atiixp ieee1394 ahci libahci r8169 mii >>> Aug 11 11:04:15 ato kernel: [ 109.554399] Pid: 29, comm: khubd Not >>> tainted >>> 2.6.35+ #19 >>> Aug 11 11:04:15 ato kernel: [ 109.554404] Call Trace: >>> Aug 11 11:04:15 ato kernel: [ 109.554416] [<ffffffff8105de1f>] >>> warn_slowpath_common+0x7f/0xc0 >>> Aug 11 11:04:15 ato kernel: [ 109.554425] [<ffffffff8105df16>] >>> warn_slowpath_fmt+0x46/0x50 >>> Aug 11 11:04:15 ato kernel: [ 109.554434] [<ffffffff812a47c0>] >>> kobject_put+0x50/0x60 >>> Aug 11 11:04:15 ato kernel: [ 109.554442] [<ffffffff8135c6b7>] >>> put_device+0x17/0x20 >>> Aug 11 11:04:15 ato kernel: [ 109.554455] [<ffffffffa0238998>] >>> hid_destroy_device+0x48/0x60 [hid] >>> Aug 11 11:04:15 ato kernel: [ 109.554466] [<ffffffffa00f2aeb>] >>> usbhid_disconnect+0x2b/0x50 [usbhid] >>> Aug 11 11:04:15 ato kernel: [ 109.554477] [<ffffffff813d620a>] >>> usb_unbind_interface+0x5a/0x1a0 >>> Aug 11 11:04:15 ato kernel: [ 109.554487] [<ffffffff81360645>] >>> __device_release_driver+0x75/0xe0 >>> Aug 11 11:04:15 ato kernel: [ 109.554495] [<ffffffff813607ad>] >>> device_release_driver+0x2d/0x40 >>> Aug 11 11:04:15 ato kernel: [ 109.554503] [<ffffffff8135f79e>] >>> bus_remove_device+0xae/0xf0 >>> Aug 11 11:04:15 ato kernel: [ 109.554510] [<ffffffff8135d437>] >>> device_del+0x127/0x1d0 >>> Aug 11 11:04:15 ato kernel: [ 109.554519] [<ffffffff813d2b88>] >>> usb_disable_device+0xa8/0x130 >>> Aug 11 11:04:15 ato kernel: [ 109.554527] [<ffffffff813cbe65>] >>> usb_disconnect+0x95/0x130 >>> Aug 11 11:04:15 ato kernel: [ 109.554535] [<ffffffff813cd51d>] >>> hub_thread+0x48d/0x1210 >>> Aug 11 11:04:15 ato kernel: [ 109.554544] [<ffffffff8105771b>] ? >>> dequeue_task_fair+0x8b/0x90 >>> Aug 11 11:04:15 ato kernel: [ 109.554555] [<ffffffff8107e490>] ? >>> autoremove_wake_function+0x0/0x40 >>> Aug 11 11:04:15 ato kernel: [ 109.554563] [<ffffffff813cd090>] ? >>> hub_thread+0x0/0x1210 >>> Aug 11 11:04:15 ato kernel: [ 109.554571] [<ffffffff8107df36>] >>> kthread+0x96/0xa0 >>> Aug 11 11:04:15 ato kernel: [ 109.554580] [<ffffffff8100be64>] >>> kernel_thread_helper+0x4/0x10 >>> Aug 11 11:04:15 ato kernel: [ 109.554588] [<ffffffff8107dea0>] ? >>> kthread+0x0/0xa0 >>> Aug 11 11:04:15 ato kernel: [ 109.554595] [<ffffffff8100be60>] ? >>> kernel_thread_helper+0x0/0x10 >>> Aug 11 11:04:15 ato kernel: [ 109.554601] ---[ end trace >>> 212263bbb326ec69 >>> ]--- >>> Aug 11 11:04:21 ato kernel: [ 116.450553] usb 1-5.4: new full speed >>> USB >>> device using ehci_hcd and address 7 >>> Aug 11 11:04:22 ato kernel: [ 116.576230] generic-usb >>> 0003:04D8:003F.0002: >>> hiddev0,hidraw1: USB HID v1.11 Device [Microchip Technology Inc. >>> Simple HID >>> Device Demo] on usb-0000:00:12.2-5.4/input0 >>> Aug 11 11:04:23 ato kernel: [ 117.746427] usb 1-5.4: USB >>> disconnect, address >>> 7 >>> Aug 11 11:04:23 ato kernel: [ 117.746500] ------------[ cut here >>> ]------------ >>> >>> >>> lan@ato:~/work/linux-2.6$ scripts/ver_linux >>> If some fields are empty or look unusual you may have an old version. >>> Compare to the current minimal requirements in Documentation/Changes. >>> >>> Linux ato 2.6.35+ #19 SMP Wed Aug 11 10:53:49 EDT 2010 x86_64 GNU/Linux >>> >>> Gnu C 4.4.3 >>> Gnu make 3.81 >>> binutils 2.20.1 >>> util-linux 2.17.2 >>> mount support >>> module-init-tools 3.11.1 >>> e2fsprogs 1.41.11 >>> pcmciautils 014 >>> Linux C Library 2.11.1 >>> Dynamic linker (ldd) 2.11.1 >>> Procps 3.2.8 >>> Net-tools 1.60 >>> Kbd 1.15 >>> Sh-utils 7.4 >>> wireless-tools 30 >>> Modules Loaded usbhid hid binfmt_misc fbcon tileblit font >>> bitblit >>> softcursor snd_hda_codec_nvhdmi nouveau snd_hda_codec_realtek >>> snd_hda_intel >>> snd_hda_codec snd_hwdep snd_pcm_oss ttm drm_kms_helper snd_mixer_oss >>> snd_pcm >>> drm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi ppdev parport_pc >>> snd_seq_midi_event snd_seq psmouse lp snd_timer parport i2c_algo_bit >>> edac_core >>> video edac_mce_amd i2c_piix4 snd_seq_device serio_raw snd soundcore >>> snd_page_alloc output ohci1394 floppy pata_atiixp ieee1394 ahci >>> libahci r8169 >>> mii >> This looks very similar to http://lkml.org/lkml/2010/8/10/373 >> >> I have not yet root-caused this, but I am not aware of any recent >> changes >> in usb-hid that might be causing that, so I suspect some change in USB >> core. But will have to investigate. > > I just tried it with a Bluetooth HID keyboard and it works as > expected. I'd suspect it to not be a HID problem. I think the warning and the non-removal of the /dev/hidraw* node are unrelated. I spent some time looking into the non-removal of the /dev/hidraw* node. The hid_disconnect() function takes care of removing the node, and it's not getting called. hid_disconnect() is called by hid_hw_stop() (hid.h), which is called by hid_device_remove() (hid-core.c) which _should_ be getting called by the driver subsystem. It looks like this is not happening for whatever reason. I wasn't able to get anything conclusive beyond this (yet). Alan. ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-08-12 3:53 UTC | newest]
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2010-08-11 15:15 PROBLEM: HIDRAW: /dev/hidraw* device does not get removed when unplugged Alan Ott
[not found] ` <4C62BE85.2040803-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
2010-08-11 15:21 ` Jiri Kosina
[not found] ` <alpine.LNX.2.00.1008111720300.2702-ztGlSCb7Y1iN3ZZ/Hiejyg@public.gmane.org>
2010-08-11 15:28 ` Alan Ott
2010-08-12 3:53 ` Alan Ott
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