ATA ACPI Support

configname: CONFIG_ATA_ACPI

Linux Kernel Configuration
└─>Device Drivers
└─>Serial ATA and Parallel ATA drivers (libata)
└─>ATA ACPI Support
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
This option adds support for ATA-related ACPI objects.
These ACPI objects add the ability to retrieve taskfiles
from the ACPI BIOS and write them to the disk controller.
These objects may be related to performance, security,
power management, or other areas.
You can disable this at kernel boot time by using the
option libata.noacpi=1