[Bluez-devel] sco transfer not possible if hci_usb uses ehci_hcd?

[Bluez-devel] sco transfer not possible if hci_usb uses ehci_hcd?

[Ruben Jenster]

Hi,

I've the problem that when ehci_hcd is loaded  and I plug my bluetooth dongle 
to my usb hub,  hci_hcd uses the ehci host and playing or recording sound 
through snd-bt-sco is not possible then. (USB_EHCI_SPLIT_ISO is enabled)
I have to unload ehci_hcd and replug the dongle in order to make audio 
transfer possible.
Can I tell hci_usb to use ohci_hcd even when ehci_hcd is loaded? 

Curiously when I plug the dongle to the usb jacks that are direcly attached to 
the mainboard hci_usb uses the ohci host, even when ehci_hcd is loaded.

I've added a bug report to thet kernel bugtracker
http://bugme.osdl.org/show_bug.cgi?id=4358

I would be glad if someone could help me.

Regards 

Ruben 


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Re: [Bluez-devel] sco transfer not possible if hci_usb uses ehci_hcd?

[Marcel Holtmann]

Hi Ruben,

> I've the problem that when ehci_hcd is loaded  and I plug my bluetooth dongle 
> to my usb hub,  hci_hcd uses the ehci host and playing or recording sound 
> through snd-bt-sco is not possible then. (USB_EHCI_SPLIT_ISO is enabled)
> I have to unload ehci_hcd and replug the dongle in order to make audio 
> transfer possible.
> Can I tell hci_usb to use ohci_hcd even when ehci_hcd is loaded? 
> 
> Curiously when I plug the dongle to the usb jacks that are direcly attached to 
> the mainboard hci_usb uses the ohci host, even when ehci_hcd is loaded.
> 
> I've added a bug report to thet kernel bugtracker
> http://bugme.osdl.org/show_bug.cgi?id=4358
> 
> I would be glad if someone could help me.

with David's and Greg's attention you got the right guys for this job,
because I am not into USB HCD stuff.

Regards

Marcel




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