problem making kernel from CVS

Hello all,

I'm getting the following error building the kernel from latest CVS (at the end, I think), on a R5000 O2. I can send the kernel config, if needed.

Some ideas?
Thanks

Massimo

 CHK     include/linux/compile.h
 UPD     include/linux/compile.h
 CC      init/version.o
 LD      init/built-in.o
 LD      .tmp_vmlinux1

arch/mips/kernel/built-in.o(.text+0x2a10): In function `$L3':
: undefined reference to atomic_lock' arch/mips/kernel/built-in.o(.text+0x2a18): In function $L3':
: undefined reference to atomic_lock' arch/mips/kernel/built-in.o(.text+0x2b40): In function $L21':
: undefined reference to atomic_lock' arch/mips/kernel/built-in.o(.text+0x2a1c): In function $L3':
: undefined reference to atomic_lock' arch/mips/kernel/built-in.o(.text+0x2a3c): In function $L3':
: undefined reference to atomic_lock' arch/mips/kernel/built-in.o(.text+0x2a44): more undefined references to atomic_lock' follow