ACPI conflicts with ACPI region SMRG

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http://unix.stackexchange.com – During startup, I noticed some error. I found this in dmesg: i801_smbus 0000:00:1f.3: PCI INT B -> GSI 21 (level, low) -> IRQ 21 ACPI: I/O resource 0000:00:1f.3 [0x400-0x41f] conflicts with ACPI region SMRG [0x400-0x40f] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver What does this mean? Which device is it talking about and how do I know which driver I should install? (HowTos)