kernel compile error - ata_modify_if_48bit

[Iantcho Vassilev]

I`m trying for 2 weeks to compile my custom kernel but through this time i
got all the same error in the ata drivers: ATA_MODIFY_IF_48bit..

I tried many time cvsup; make cleandir; make clean; make buildkernel
KERNCONF=...


ps. I want to note however that the working kernel now is complied with the
same configuration that is breaking now