Re: Problem with uhci and usb-uhci

[Johannes Erdfelt <johannes@erdfelt.com>]

On Sun, Jan 05, 2003, Øystein Svendsen <svendsen@pvv.org> wrote:
> Johannes Erdfelt wrote:
> 
> >Have you tried this with OHCI?
>
> I am not able to load the OHCI driver on my system, so the answer is no. 
>  I guess my hardware is not compatible.

I assume you have UHCI hardware then. You would need OHCI hardware to
use the OHCI driver :)

> >The error message for uhci.o atleast is returning back a babble error
> >which will then stall the pipe.
> >
> >A babble error is usually a driver or device issue.
>
> I am not very familiar on how the USB stuff works, but I'll try to take 
> a look on the usb-midi.c after I get some sleep.  I was assuming there 
> was trouble with the UHCI stuff because the USB bus seems to remain 
> stalled even after i unplug the MIDI adapter from the USB bus.

The bus doesn't STALL, but there may have been a problem with the host
controller.

For instance, some VIA controllers will lock up if it receives a BABBLE
condition.

JE