Re: [Bluez-users] problem using two bluetooth dongles together

["siddhant tewari" <siddhant.tewari@gmail.com>]

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hi Marcel,
               Thanks for the advice , will surely port to 2.6 kernel.
regards
siddhant

On 4/16/07, Marcel Holtmann <marcel@holtmann.org> wrote:
>
> Hi Siddhant,
>
> >     I will try to upgrade to 2.6 kernel but since this is arm Single
> > Board Computer , i am not sure about the effort and time  that would
> > be required to do so.
> >
> > I have another observation to share with you .
> >
> > When using two dongle , if i put hci0 down by hciconfig hci0 down
> > and then put hci1 up by hciconfig  hci1 up
> > then hciconfig returns correct address for the second adapter as well.
> >
> > Also if i try to put hci1 up  without putting hci0 down then same
> > thing
> >  ----- "cannot contact hci1 connection timed out" message appears.
> >
> > Please reply if you can give me some hints about whats happening after
> > going through the above observation.
>
> I am pretty sure that is the USB subsystem. Since when you down the
> adapter all URBs will be canceled. So you can try to change the
> constants for the number of URBs in hci_usb.h and recompile your kernel.
> You can also try to disable ISOC transfers (SCO support for the driver)
> and see if that takes the bandwidth pressure from the USB bus.
>
> However, the 2.6 USB subsystem is really the way to go. No effort on
> porting to 2.6 is wasted.
>
> Regards
>
> Marcel
>
>
>
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