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Date: Wed, 24 Oct 2001 14:36:01 +0100
From: Tim Waugh <twaugh@redhat.com>
To: Dave Garry <daveg@firsdown.demon.co.uk>
Cc: Kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: linux-2.4.12 / linux-2.4.13 parallel port problem
Message-ID: <20011024143601.M7544@redhat.com>
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In-Reply-To: <3BD6BF43.D347719B@firsdown.demon.co.uk>; from daveg@firsdown.demon.co.uk on Wed, Oct 24, 2001 at 02:16:51PM +0100
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On Wed, Oct 24, 2001 at 02:16:51PM +0100, Dave Garry wrote:

> With kernel 2.4.12 and 2.4.13 the parallel port on
> my machine looks like this according to dmesg:
>=20
> parport0: PC-style at 0x378 [PCSPP,TRISTATE]

Yes.  It's showing you what modes it is prepared to use.

> Under 2.4.10 is looks like this:
[...]
> parport0: PC-style at 0x378 (0x778) [PCSPP,TRISTATE,COMPAT,ECP]

A bug; it was showing you what modes the hardware was capable of,
_despite_ knowing that it wasn't going to use it.

The parport driver will only use ECP and parallel port FIFO modes if
it has an IRQ to use.  Try 'irq=3Dauto'.

Tim.
*/

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