Re: Visor USB hang

From: Greg KH
Date: Wed Dec 03 2003 - 19:44:58 EST

On Wed, Dec 03, 2003 at 05:36:01PM -0500, Collins, Bernard F. (Skip) wrote:
> > > I am running 2.4.23 on a RedHat 9 system. Whenever I try to sync my
> > > Visor Deluxe, the system hangs/freezes soon after I press the sync
> > > button on my cradle. Trying to find the cause of the problem, I
> > > preloaded the usbserial and visor modules with "debug=1". Nothing
> > > obviously wrong appears in the logs. The last message before the
> > > system freezes is a usb-uhci.c interrupt message.
> >
> > Can you show the log with that enabled?
> If you mean debug=1 enabled, the log excerpt I posted was generated with
> both the usbserial and visor modules modprobed with debug=1. Perhaps I am
> mistaken in assuming that my approach actually enables debugging. I
> modprobed both modules and hit the hotsync button. I am assuming that
> hotplug does not override the manually loaded module parameters.

but then no user program tried to talk to the device. I don't see any
accesses to the device in your logs. Any oops messages?

> > What happens if you use the uhci.o module instead of usb-uhci.o?
> That is not terribly convenient to test right now. Can you suggest a simple
> way to unload usb-uhci and load uhci without disabling my usb keyboard and
> mouse?

rmmod usb-uhci && modprobe uhci


greg k-h
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