Re: [linux-usb-devel] Re: 2.5.5-pre1 rmmod usb-uhci hangs

[Johannes Erdfelt <johannes@erdfelt.com>]

On Sun, Feb 24, 2002, Dan Hopper <dbhopper@austin.rr.com> wrote:
> Greg KH <greg@kroah.com> remarked:
> > On Sun, Feb 24, 2002 at 12:39:15AM -0600, Dan Hopper wrote:
> > > 
> > > The reason I'd like to switch back to usb-uhci instead of uhci is
> > > twfold:  Vmware seems to want to only use usb-uhci and not uhci
> > > (dummies!).  And uhci seems to be unable to get the scanner going
> > > such that it doesn't "stutter" all the way down the page.  usb-uhci
> > > seems to be able to keep up so that it just sweeps on down the page.
> > 
> > I noticed that Vmware does that, and was wondering why.
> > 
> > If you get a chance, can you try the uhci patches that were posted on
> > linux-usb-devel last week, or all of them rolled up at:
> > 	http://www.kernel.org/pub/linux/kernel/people/gregkh/usb/linux-2.4.18-rc2-gregkh-1.patch.gz
> > and let me know if that solves your problem with uhci or not?
> 
> Well, that was interesting.  I upgraded to rc2 and applied that
> patch.  uhci still behaved the same (can't keep up with scanner). 
> But usb-uhci now doesn't lock up the system on a shutdown.  And it
> was the patch that did it, not rc2, because I tried a pristine rc2
> build, too, and it still locks up.  I note that there's nothing in
> the patch that directly touches usb-uhci, so it must be a side
> affect of some other fix.

Hmm, that is interesting. I wonder what is going on with it. Are you
using the scanner kernel driver?

JE