linux-kernel - RE: Boot time Bluetooth BUG: warning: (value

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Date:	Tue, 27 Feb 2007 15:35:20 -0500
From:	"Fortier,Vincent [Montreal]" <Vincent.Fortier1@...GC.CA>
To:	"Jiri Kosina" <jikos@...os.cz>
Cc:	<linux-kernel@...r.kernel.org>, <marcel@...tmann.org>,
	<zaitcev@...hat.com>
Subject: RE: Boot time Bluetooth BUG: warning: (value > m) at hid-core.c:793

Hi Jiri,

Actually I don't know... Let me test this.

Here is the scenario:
1) If I plug my USB dongle after my system has booted, everything works fine (except that the keyboard repeats a few keys somethimes..)
2) If the dongle is already plugged at boot-time, there is a BUG echo in the dmesg when the bluetooth service fires up.  This make both the mouse and keyboard unresponsive until I finally unplug / replug the dongle hence going back at state 1)

I never run the hid2hci command manually but the bluetooth init script seems to do so.

Quick test:
1- unplug/plug back the dongle to get back to state 1)
The keyboard and mouse do work has expected...
2- Now run the hid2hci command has root
[root@...alhost init.d]# hid2hci
Switching device 046d:c70a to HCI mode was successful
Switching device 046d:c70e to HCI mode was successful

DMESG:
input: Logitech Logitech BT Mini-Receiver as /class/input/input15
input,hiddev96: USB HID v1.11 Mouse [Logitech Logitech BT Mini-Receiver] on usb-0000:00:1d.7-6.2.2.1.2.3
BUG: warning: (value > m) at drivers/usb/input/hid-core.c:793/implement() (Tainted: P     )
 [<c0405018>] dump_trace+0x69/0x1b6
 [<c040517d>] show_trace_log_lvl+0x18/0x2c
 [<c0405778>] show_trace+0xf/0x11
 [<c0405875>] dump_stack+0x15/0x17
 [<c05993c0>] hid_output_report+0x23c/0x2e7
 [<c05994b7>] hid_submit_ctrl+0x4c/0x1d9
 [<c05997fd>] hid_submit_report+0x134/0x15f
 [<c059bd09>] hiddev_ioctl+0x327/0x88a
 [<c04802c8>] do_ioctl+0x4c/0x62
 [<c0480528>] vfs_ioctl+0x24a/0x25c
 [<c0480586>] sys_ioctl+0x4c/0x66
 [<c040404b>] syscall_call+0x7/0xb
 [<001e8402>] 0x1e8402
 =======================
BUG: warning: ....


3) Now repeat step 1):
 =======================
usb 4-6.2.2.1.2.1: new full speed USB device using ehci_hcd and address 24
usb 4-6.2.2.1.2.1: configuration #1 chosen from 1 choice
usb 4-6.2.2.1.2: USB disconnect, address 21
usb 4-6.2.2.1.2.1: USB disconnect, address 24
usb 4-6.2.2.1.2.2: USB disconnect, address 22
usb 4-6.2.2.1.2.3: USB disconnect, address 23
usb 4-6.2.2.1.2: new full speed USB device using ehci_hcd and address 25
usb 4-6.2.2.1.2: configuration #1 chosen from 1 choice
hub 4-6.2.2.1.2:1.0: USB hub found
hub 4-6.2.2.1.2:1.0: 3 ports detected
usb 4-6.2.2.1.2.1: new full speed USB device using ehci_hcd and address 26
usb 4-6.2.2.1.2.1: configuration #1 chosen from 1 choice
usb 4-6.2.2.1.2.2: new full speed USB device using ehci_hcd and address 27
usb 4-6.2.2.1.2.2: configuration #1 chosen from 1 choice
input: Logitech Logitech BT Mini-Receiver as /class/input/input16
input: USB HID v1.11 Keyboard [Logitech Logitech BT Mini-Receiver] on usb-0000:00:1d.7-6.2.2.1.2.2
usb 4-6.2.2.1.2.3: new full speed USB device using ehci_hcd and address 28
usb 4-6.2.2.1.2.3: configuration #1 chosen from 1 choice
input: Logitech Logitech BT Mini-Receiver as /class/input/input17
input,hiddev96: USB HID v1.11 Mouse [Logitech Logitech BT Mini-Receiver] on usb-0000:00:1d.7-6.2.2.1.2.3

So yes, it looks like a hid2hci BUG or kernel BUG initiated by the hid2hci command.

- vin


> -----Message d'origine-----
> De : Jiri Kosina [mailto:jikos@...os.cz] 
> Envoyé : 27 février 2007 11:15
> À : Fortier,Vincent [Montreal]
> Objet : RE: Boot time Bluetooth BUG: warning: (value > m) at 
> hid-core.c:793
> 
> On Tue, 27 Feb 2007, Fortier,Vincent [Montreal] wrote:
> 
> > Actually it's the first time I'm trying this keyboard and mouse.
> 
> And I guess when you use it in HID mode (i.e. when the 
> hid2hci command is not run), then keyboard and mouse work 
> with no errors reported in the kernel logs, and all the 
> buttons work correctly, am I right?
> 
> --
> Jiri Kosina
> 
-
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