"I/O resource 0000:00:1f.3 [0x1c00-0x1c1f] conflicts with ACPI region SMBI"

"I/O resource 0000:00:1f.3 [0x1c00-0x1c1f] conflicts with ACPI region SMBI"

[The Holy ettlz]

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Hello,

I see the following in dmesg. I don't know how report-worthy it is, but
anyway:

ACPI: I/O resource 0000:00:1f.3 [0x1c00-0x1c1f] conflicts with ACPI
region SMBI 
[0x1c00-0x1c0f]
ACPI: Device needs an ACPI driver

This is, from lspci -nnvv:

00:1f.3 SMBus [0c05]: Intel Corporation 82801H (ICH8 Family) SMBus
Controller [8086:283e] (rev 03)
	Subsystem: CLEVO/KAPOK Computer Device [1558:0721]
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin C routed to IRQ 19
	Region 0: Memory at 88000000 (32-bit, non-prefetchable) [size=256]
	Region 4: I/O ports at 1c00 [size=32]
	Kernel driver in use: i801_smbus
	Kernel modules: i2c-i801

Thanks,
James.

-- 
The Holy ettlz                              TheHolyettlz@googlemail.com
PGP key ID: 03F94B5D
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Re: "I/O resource 0000:00:1f.3 [0x1c00-0x1c1f] conflicts with ACPI region SMBI"

[Matthew Garrett]

On Mon, Dec 29, 2008 at 02:27:52PM +0000, The Holy ettlz wrote:
> Hello,
> 
> I see the following in dmesg. I don't know how report-worthy it is, but
> anyway:
> 
> ACPI: I/O resource 0000:00:1f.3 [0x1c00-0x1c1f] conflicts with ACPI
> region SMBI 
> [0x1c00-0x1c0f]
> ACPI: Device needs an ACPI driver

Your ACPI tables use the smbus controller themselves, so using a native 
Linux driver could potentially result in race conditions and bizarre 
failures. If you're not trying to use your smbus controller directly 
then it's not really an issue.

-- 
Matthew Garrett | mjg59@srcf.ucam.org

Re: "I/O resource 0000:00:1f.3 [0x1c00-0x1c1f] conflicts with ACPI region SMBI"

[The Holy ettlz]

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On Mon, 2008-12-29 at 14:35 +0000, Matthew Garrett wrote:
> On Mon, Dec 29, 2008 at 02:27:52PM +0000, The Holy ettlz wrote:
> > Hello,
> > 
> > I see the following in dmesg. I don't know how report-worthy it is, but
> > anyway:
> > 
> > ACPI: I/O resource 0000:00:1f.3 [0x1c00-0x1c1f] conflicts with ACPI
> > region SMBI 
> > [0x1c00-0x1c0f]
> > ACPI: Device needs an ACPI driver
> 
> Your ACPI tables use the smbus controller themselves, so using a native 
> Linux driver could potentially result in race conditions and bizarre 
> failures. If you're not trying to use your smbus controller directly 
> then it's not really an issue.

Well, i2c-i801 is loaded:

i915                   67080  2 
drm                   201328  3 i915
i2c_i801               17820  0 
i2c_core               29216  2 drm,i2c_i801

Should I be worried?

James

-- 
The Holy ettlz                              TheHolyettlz@googlemail.com
PGP key ID: 03F94B5D
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Re: "I/O resource 0000:00:1f.3 [0x1c00-0x1c1f] conflicts with ACPI region SMBI"

[Matthew Garrett]

On Mon, Dec 29, 2008 at 02:42:17PM +0000, The Holy ettlz wrote:

> Well, i2c-i801 is loaded:
> 
> i915                   67080  2 
> drm                   201328  3 i915
> i2c_i801               17820  0 
> i2c_core               29216  2 drm,i2c_i801
> 
> Should I be worried?

As long as nothing is actually using it, you'll be fine.

-- 
Matthew Garrett | mjg59@srcf.ucam.org