Re: New ACPI warnings with v3.16.0-rc1

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On Thu, 2014-06-19 at 01:09 +0200, Rafael J. Wysocki wrote:
> On Wednesday, June 18, 2014 11:50:04 PM Julian Wollrath wrote:
> > Hi,
> 
> Hi,
> 
> > with v3.16.0-rc1 I get the following warnings, which I did not occur
> > with v3.15.1:
> > [   14.558365] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042f conflicts with OpRegion 0x0000000000000400-0x000000000000047f (\_SB_.PCI0.LPC_.PMIO) (20140424/utaddress-258)
> > [   14.558377] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver 
> > [   14.558386] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054f conflicts with OpRegion 0x0000000000000500-0x000000000000057f (\_SB_.PCI0.LPC_.LPIO) (20140424/utaddress-258)
> > [   14.558392] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver 
> > [   14.558395] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053f conflicts with OpRegion 0x0000000000000500-0x000000000000057f (\_SB_.PCI0.LPC_.LPIO) (20140424/utaddress-258)
> > [   14.558401] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver 
> > [   14.558403] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052f conflicts with OpRegion 0x0000000000000500-0x000000000000057f (\_SB_.PCI0.LPC_.LPIO) (20140424/utaddress-258)
> > [   14.558409] ACPI: If an ACPI driver is available for this device,
> > you should use it instead of the native driver
> > 
> > How can one find out, what the native driver is, and if there is an
> > ACPI driver?
> 
BTW, there is indeed one new driver that invokes
acpi_check_resource_conflict() between 3.15 and 3.16-rc1.
could you please check if CONFIG_SENSORS_NCT6683 is set in your config?
If yes, does the warning messages go away if CONFIG_SENSORS_NCT6683=n?

thanks,
rui

> These are resource conflicts and I'm not sure why there were not there before.
> Perhaps we introduced a new driver trying to reserve system I/O ranges
> claimed by the ACPI core already.
> 
> I agree that the second part of the message is not very useful, though.
> 
> Rui and Lv (CCed) should be able to help you diagnose this problem further.
> 
> Rafael
> 


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