2.6.31 kernel for mips compile failure - war.h:12:17: error: war.h: No such file or directory

[myuboot@fastmail.fm]

I am trying to use buildroot 2009.08 to compile kernel 2.6.31 for mips,
but it fails to error -" war.h can't be found". I used the same
buildroot to build kernel version 2.6.29 with no problem. 

Please give me some suggestion on how to fix this issue. The file 
./arch/mips/include/asm/war.h is there with no problem. Thanks a lot.

cp
/home/root123/sources/buildroot-2009.08-k/build_mips/staging_dir/usr/bin/mkimage
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/u-boot-tools
mkdir -p
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/root/boot
mv
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/localversion*
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/root/boot
mv: cannot stat
`/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/localversion*':
No such file or directory
make:
[/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/.depend_done]
Error 1 (ignored)
/usr/bin/make -j1 HOSTCC="/usr/bin/gcc" HOSTCFLAGS="" ARCH=mips
INSTALL_MOD_PATH=/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/root
CROSS_COMPILE=/home/root123/sources/buildroot-2009.08-k/build_mips/staging_dir/usr/bin/mips-linux-uclibc-
LDFLAGS="-L/home/root123/sources/buildroot-2009.08-k/build_mips/staging_dir/lib
-L/home/root123/sources/buildroot-2009.08-k/build_mips/staging_dir/usr/lib
--sysroot=/home/root123/sources/buildroot-2009.08-k/build_mips/staging_dir/"
LZMA="/home/root123/sources/buildroot-2009.08-k/toolchain_build_mips/bin/lzma"
PATH=/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/u-boot-tools:/home/root123/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/stuff/bitbake/bin
-C
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31
prepare
make[1]: Entering directory
`/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31'
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  SYMLINK include/asm -> include/asm-mips
  CC      arch/mips/kernel/asm-offsets.s
In file included from
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/arch/mips/include/asm/bitops.h:24,
                 from include/linux/bitops.h:17,
                 from include/linux/kernel.h:15,
                 from include/linux/sched.h:52,
                 from arch/mips/kernel/asm-offsets.c:13:
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/arch/mips/include/asm/war.h:12:17:
error: war.h: No such file or directory
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/arch/mips/include/asm/war.h:82:2:
error: #error Check setting of R4600_V1_INDEX_ICACHEOP_WAR for your
platform
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/arch/mips/include/asm/war.h:112:2:
error: #error Check setting of R4600_V1_HIT_CACHEOP_WAR for your
platform
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/arch/mips/include/asm/war.h:128:2:
error: #error Check setting of R4600_V2_HIT_CACHEOP_WAR for your
platform
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/arch/mips/include/asm/war.h:141:2:
error: #error Check setting of R5432_CP0_INTERRUPT_WAR foryour platform
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/arch/mips/include/asm/war.h:155:2:
error: #error Check setting of BCM1250_M3_WAR for your platform
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/arch/mips/include/asm/war.h:162:2:
error: #error Check setting of SIBYTE_1956_WAR for your platform
/home/root123/sources/buildroot-2009.08-k/project_build_mips/f1/linux-2.6.31/arch/mips/include/asm/war.h:178:2:
error: #error Check setting of MIPS4K_ICACHE_REFILL_WAR for your
platform