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Subject: Re: 2.6.17-mm4
From: Arjan van de Ven <arjan@infradead.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>, Dave Jones <davej@redhat.com>,
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Date: Fri, 30 Jun 2006 11:54:02 +0200
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On Fri, 2006-06-30 at 11:07 +0100, Alan Cox wrote:
> Ar Gwe, 2006-06-30 am 01:05 +0200, ysgrifennodd Ingo Molnar:
> > it does things like:
> > 
> >         static const unsigned long qd_port[2] = { 0x30, 0xB0 };
> >         static const unsigned long ide_port[2] = { 0x170, 0x1F0 };
> > 
> >         [...]
> >                 unsigned long port = qd_port[i];
> >         [...]
> >                         r = inb_p(port);
> >                         outb_p(0x19, port);
> >                         res = inb_p(port);
> >                         outb_p(r, port);
> > 
> > so it reads/writes port 0x30 and 0xb0. Are those used by something else 
> > on modern hardware?
> 
> Not especially. Perhaps the best thing to do here would be to make qdi
> compiled into the kernel (as opposed to modular) only do so if
> "probe_qdi=1" or similar is set.

another quick hack is to check for vesa lb... eg if pci is present, skip
this thing entirely :)