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Subject: Re: current git crashes on bootup with pci_iounmap()
From: Kay Sievers <kay.sievers@vrfy.org>
To: Tejun Heo <htejun@gmail.com>
Cc: Marcel Holtmann <marcel@holtmann.org>, Jeff Garzik <jeff@garzik.org>,
       linux-kernel <linux-kernel@vger.kernel.org>
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Date: Sat, 24 Feb 2007 20:40:15 +0100
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On Wed, 2007-02-21 at 20:34 +0900, Tejun Heo wrote:
> Kay Sievers wrote:
> > On 2/13/07, Kay Sievers <kay.sievers@vrfy.org> wrote:
> >> On Tue, 2007-02-13 at 17:04 +0100, Marcel Holtmann wrote:
> >> > > kernel BUG at lib/iomap.c:254!
> >> > > invalid opcode: 0000 [#1]
> >> > > ...
> >> > >
> >> > > The screen picture is here:
> >> > >   http://vrfy.org/pci_iounmap.jpg
> >> > >
> >> > > It's a Thinkpad T43p.
> >> > >
> >> > > 2.6.20 was working fine.
> >> > >
> >> > > Commenting out:
> >> > >   IO_COND(addr, /* nothing */, iounmap(addr));
> >> > > in:
> >> > >   lib/iomap.c:254
> >> > > makes at least booting up possible.
> >> >
> >> > I saw a similar one on my X41. Disabling the AHCI driver made the
> >> > machine booting again.
> >>
> >> Hey Marcel,
> >> yeah, that works fine here too.
> > 
> > Tejun, Jeff, any ideas what's going wrong with the iomap change and
> > the AHCI driver?
> 
> The following commit should have fixed the problem, at least the oops.
> Care to give the current git head a shot?

Yes, it boots fine now with the AHCI driver compiled in.

Thanks,
Kay