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Date:      Sun, 5 Mar 2000 11:21:11 +0000 (GMT)
From:      Nick Hibma <n_hibma@calcaphon.com>
To:        USB BSD list <usb-bsd@egroups.com>
Cc:        Guido van Rooij <guido@gvr.org>, FreeBSD CURRENT Mailing List <current@FreeBSD.ORG>
Subject:   Unplugging the floppy (Re: Support for USB floppy drives)
Message-ID:  <Pine.BSF.4.20.0003051119130.1848-100000@localhost>
In-Reply-To: <20000303235109.A88642@gvr.gvr.org>

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I've had a look at the problem described by Guido and it is reprodicuble
here. Somehow a transfer is not descheduled when it should and this make
uhci_done bomb because of a stale pointer.

So, do not unplug the drive without a drive until this has been fixed.


Nick



On Fri, 3 Mar 2000, Guido van Rooij wrote:

> On Thu, Mar 02, 2000 at 08:32:00PM +0000, Nick Hibma wrote:
> > 
> > 	camcontrol rescan 0
> > 	dd if=/dev/zero of=/dev/da0 bs=10k count=100
> > 	disklabel -r -w da0 fd1440
> > 	newfs /dev/da0
> > 
> > Keep me posted on the results or any problems you have.
> > 
> 
> Bij deze:
> 
> plug in floppy drive op een vaio.
> camcontrol rescan 0
> unplug de floppy drive
> wacht 2-3 seconden
> panic...en wel zodanig erg dat hij geen dump meer kan maken
> 
> -Guido
> 

--
n_hibma@webweaving.org
n_hibma@freebsd.org                                          USB project
http://www.etla.net/~n_hibma/



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