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Date: Sun, 24 Feb 2002 12:49:43 -0600
From: Dan Hopper <dbhopper@austin.rr.com>
To: Johannes Erdfelt <johannes@erdfelt.com>
Cc: Greg KH <greg@kroah.com>, Patrick Mochel <mochel@osdl.org>,
        Pierre Rousselet <pierre.rousselet@wanadoo.fr>,
        lkml <linux-kernel@vger.kernel.org>,
        linux-usb-devel@lists.sourceforge.net
Subject: Re: [linux-usb-devel] Re: 2.5.5-pre1 rmmod usb-uhci hangs
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Johannes Erdfelt <johannes@erdfelt.com> remarked:
> Hmm, that is interesting. I wonder what is going on with it. Are you
> using the scanner kernel driver?

Yes.  And sane 1.0.5.  FWIW, the command I'm using that stutters
with uhci and not usb-uhci is:

scanimage --mode lineart --resolution 600 -x 203.2 -y 271.0 \
	--contrast 0 --brightness 0  > /tmp/copy.pbm

That results in a 3848837 byte file in about 37 seconds with
usb-uhci.  Not exactly pushing the USB 1.1 bandwidth.  (unless
there's a significant discrepancy between the bits coming from the
scanner and those scanimage dumps to the file, I suppose)

(Incidentally, I still haven't worked out how to get it to properly
autoload the scanner driver at startup.  It loads the USB printer
driver fine, but not the scanner, which I have to manually modprobe
myself.  I've started fiddling with post-install scripts with
sleeps, but haven't worked out the magic yet.)

Dan
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