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Date: Thu, 25 Oct 2001 16:52:26 +0100
From: Tim Waugh <twaugh@redhat.com>
To: bill davidsen <davidsen@tmr.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: linux-2.4.12 / linux-2.4.13 parallel port problem
Message-ID: <20011025165226.T7544@redhat.com>
In-Reply-To: <20011024230917.H7544@redhat.com> <ioWB7.5038$rR5.921319585@newssvr17.news.prodigy.com>
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In-Reply-To: <ioWB7.5038$rR5.921319585@newssvr17.news.prodigy.com>; from davidsen@tmr.com on Thu, Oct 25, 2001 at 03:41:02PM +0000
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On Thu, Oct 25, 2001 at 03:41:02PM +0000, bill davidsen wrote:

> Thank you... that sure doesn't jump out at someone, it generates no
> error message, etc.

See
<ftp://people.redhat.com/twaugh/patches/linux24/linux-ignore.patch>.

> Question: is this intended behaviour? I would think that you would
> normally want to just say irq=auto and let the driver find the io
> address just as it does normally.

It is intended behaviour.  'irq=auto' in this case didn't help because
the ECP chipset would not tell us what IRQ it was assigned (it just
said "it's set by jumpers, or alternatively I'm not telling you".

The problem with just specifying 'irq=7' on its own is that in the
case of there being more than one port it isn't clear what it should
mean.

When there is only one port to consider, it would make sense to use
that IRQ, but by the time we know how many ports there are we've
already decided not to use the supplied parameter.  Patches
welcome. :-)

Tim.
*/

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