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Date: Thu, 19 Mar 2009 13:10:02 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Meelis Roos <mroos@linux.ee>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Lava dual parallel PCI card IRQ problem
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> PCI parallel port detected: 1407:8000, I/O at 0xdff0(0x0), IRQ 11

Well we are half way there - it has detected the port and IRQ properly.

> parport1: PC-style at 0xdff0 [PCSPP,TRISTATE,EPP]
> [...]
> lp0: using parport0 (interrupt-driven).
> lp1: using parport1 (polling).

You may need to stick a few printks in the port registration path to see
why it made that decision.