linux-kernel - Re: drivers/pci/probe.c patch in 2.6.20.4 causes 'cannot adjust BAR0 (not I/O)' on NVidia MCP51

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Message-Id: <20070325190119.M81172@chilan.com>
Date:	Sun, 25 Mar 2007 21:09:36 +0200
From:	"Grzegorz Chwesewicz" <grzegorz.chwesewicz@...lan.com>
To:	"Torsten Kaiser" <just.for.lkml@...glemail.com>,
	"Gabriel C" <nix.or.die@...glemail.com>
Cc:	"Kevin P. Fleming" <lkml@...leming.us>,
	linux-kernel@...r.kernel.org, "Alan Cox" <alan@...hat.com>,
	"Jan Beulich" <jbeulich@...ell.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>
Subject: Re: drivers/pci/probe.c patch in 2.6.20.4 causes 'cannot adjust BAR0 (not I/O)' on NVidia MCP51

On Sun, 25 Mar 2007 19:13:50 +0100, Torsten Kaiser wrote
> On 3/25/07, Gabriel C <nix.or.die@...glemail.com> wrote:
> > Kevin P. Fleming wrote:
> > > I just upgraded from 2.6.20.2 to 2.6.20.4 on my Compaq V6000 laptop,
> > > which has an NVidia core chipset. It has the MCP51 and uses it for PATA
> > > and SATA.
> > >
> > > Booting the 2.6.20.4 kernel causes two messages (and a kernel lockup)
> > > like this:
> > >
> > > 0000:00:0d.0: cannot adjust BAR0 (not I/O)
> > > 0000:00:0d.0: cannot adjust BAR1 (not I/O)
> > >
> > [   18.754623] Enabling SiS 96x SMBus.
> > [   18.754812] 0000:00:02.5: cannot adjust BAR0 (not I/O)
> > [   18.754816] 0000:00:02.5: cannot adjust BAR1 (not I/O)
> > [   18.754819] 0000:00:02.5: cannot adjust BAR2 (not I/O)
> > [   18.754822] 0000:00:02.5: cannot adjust BAR3 (not I/O)
> 

I am seeing this also on

00:09.0 IDE interface: nVidia Corporation nForce2 IDE (rev a2) (prog-if 8a
[Master SecP PriP])
        Subsystem: EPoX Computer Co., Ltd. Unknown device 1000
        Flags: bus master, 66MHz, fast devsel, latency 0
        [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [disabled]
[size=8]
        [virtual] Memory at 000003f0 (type 3, non-prefetchable) [disabled]
[size=1]
        [virtual] Memory at 00000170 (32-bit, non-prefetchable) [disabled]
[size=8]
        [virtual] Memory at 00000370 (type 3, non-prefetchable) [disabled]
[size=1]
        I/O ports at f000 [size=16]
        Capabilities: [44] Power Management version 2

I have epox 8rda3+ motherboard.

0000:00:09.0: cannot adjust BAR0 (not I/O)
0000:00:09.0: cannot adjust BAR1 (not I/O)
0000:00:09.0: cannot adjust BAR2 (not I/O)
0000:00:09.0: cannot adjust BAR3 (not I/O)

Kernel boots, IDE cdrom, and hdd works ok.

###############################

I also have some BAR staff in dmesg on second computer (HP nx6325):

00:14.1 IDE interface: ATI Technologies Inc Standard Dual Channel PCI IDE
Controller (rev 80) (prog-if 82 [Master PriP])
        Subsystem: Hewlett-Packard Company Unknown device 30b0
        Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 17
        I/O ports at 01f0 [size=8]
        I/O ports at 03f4 [size=1]
        I/O ports at 0170 [size=8]
        I/O ports at 0374 [size=1]
        I/O ports at 7040 [size=16]
        Capabilities: [70] Message Signalled Interrupts: 64bit- Queue=0/0 Enable-

0000:00:14.1: trying to change BAR0 from 0000 to 01F0
0000:00:14.1: trying to change BAR1 from 0000 to 03F4
0000:00:14.1: trying to change BAR2 from 0000 to 0170
0000:00:14.1: trying to change BAR3 from 0000 to 0374

Kernel boots, everything works ok.

--
Greetings - Grzegorz Chwesewicz
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