[Bluez-devel] resetting usb bt device

[Bluez-devel] resetting usb bt device

[Simon Vogl]

hi,
notice that sometimes the bluez stack runs into a state where I cannot
connect rfcomm channels any more etc. To get into a sane mode of operatio=
n,
pulling and plugging the bt dongle helps normally.

As we build a system that will be hidden behind a wall, I need a software=
-
only solution to this. I tried to stop the bluetooth services as well as =
hotplug,
unload any dangling modules, then start hotplug and bluetooth services ag=
ain and
I send a hci_reset to the device.

Unfortunately, this does not resolve my issues, but I get lots of submit =
failures:
Mar 25 07:59:46 wall6 kernel: Written 2000,2001 by Maxim Krasnyansky <max=
k@qualcomm.com>
Mar 25 07:59:46 wall6 kernel: sco_sock_connect: sk dedfe080
Mar 25 07:59:46 wall6 kernel: sco_conn_ready: conn dfc92e00
Mar 25 07:59:46 wall6 kernel: usb-uhci.c: uhci_submit_urb: pipesize for p=
ipe 18200 is zero
Mar 25 07:59:46 wall6 kernel: __tx_submit: hci0 tx submit failed urb f7e3=
fe14 type 3 err -90
Mar 25 07:59:47 wall6 kernel: usb-uhci.c: uhci_submit_urb: pipesize for p=
ipe 18200 is zero
Mar 25 07:59:47 wall6 kernel: __tx_submit: hci0 tx submit failed urb f7e3=
fe14 type 3 err -90
Mar 25 07:59:47 wall6 kernel: usb-uhci.c: uhci_submit_urb: pipesize for p=
ipe 18200 is zero
Mar 25 07:59:47 wall6 kernel: __tx_submit: hci0 tx submit failed urb f7e3=
fe14 type 3 err -90
Mar 25 07:59:47 wall6 kernel: usb-uhci.c: uhci_submit_urb: pipesize for p=
ipe 18200 is zero

etc., as well as loads of other mysterious happenings.

Is there a proper way to reset this device other than soldering a paralle=
l-port controlled
power switch?

SImon


--=20
_______________________________________________________________________
Dr. Simon Vogl
Institut f=C3=BCr Pervasive Computing, Johannes Kepler Universit=C3=A4t L=
inz
Altenberger Stra=C3=9Fe 69, A-4040 Linz, Austria

Tel: +43 732 2468-8517, Fax: +43 732 2468-8426
mailto: vogl@soft.uni-linz.ac.at,  http://www.soft.uni-linz.ac.at/








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Re: [Bluez-devel] resetting usb bt device

[Marcel Holtmann]

Hi Simon,

> notice that sometimes the bluez stack runs into a state where I cannot
> connect rfcomm channels any more etc. To get into a sane mode of operation,
> pulling and plugging the bt dongle helps normally.
> 
> As we build a system that will be hidden behind a wall, I need a software-
> only solution to this. I tried to stop the bluetooth services as well as hotplug,
> unload any dangling modules, then start hotplug and bluetooth services again and
> I send a hci_reset to the device.
> 
> Unfortunately, this does not resolve my issues, but I get lots of submit failures:
> Mar 25 07:59:46 wall6 kernel: Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
> Mar 25 07:59:46 wall6 kernel: sco_sock_connect: sk dedfe080
> Mar 25 07:59:46 wall6 kernel: sco_conn_ready: conn dfc92e00
> Mar 25 07:59:46 wall6 kernel: usb-uhci.c: uhci_submit_urb: pipesize for pipe 18200 is zero
> Mar 25 07:59:46 wall6 kernel: __tx_submit: hci0 tx submit failed urb f7e3fe14 type 3 err -90
> Mar 25 07:59:47 wall6 kernel: usb-uhci.c: uhci_submit_urb: pipesize for pipe 18200 is zero
> Mar 25 07:59:47 wall6 kernel: __tx_submit: hci0 tx submit failed urb f7e3fe14 type 3 err -90
> Mar 25 07:59:47 wall6 kernel: usb-uhci.c: uhci_submit_urb: pipesize for pipe 18200 is zero
> Mar 25 07:59:47 wall6 kernel: __tx_submit: hci0 tx submit failed urb f7e3fe14 type 3 err -90
> Mar 25 07:59:47 wall6 kernel: usb-uhci.c: uhci_submit_urb: pipesize for pipe 18200 is zero
> 
> etc., as well as loads of other mysterious happenings.

what kernel is this? Have you tried the uhci.o driver? What USB host
controller do you use? What kind of dongle are you using? Try to buy
another one.

Regards

Marcel




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