Kernel2.6.2 compilation failed

[Utilisateur Debian <jaonary@ifrance.com>]

Hi all,
I tried to compile a custom kernel that I got from mvista::2.5-tree via
rsync but I got this error message:

 drivers/video/built-in.o(.text+0x194e4): In function
`radeon_engine_reset':: multiple definition of `radeon_engine_reset'
drivers/char/built-in.o(.text+0x2c2f4): first defined here
ld: Warning: size of symbol `radeon_engine_reset' changed from 168 in
drivers/char/built-in.o to 1516 in drivers/video/built-in.o
make[2]: *** [drivers/built-in.o] Error 1
make[1]: *** [drivers] Error 2
make[1]: Leaving directory `/usr/local/src/benh-kernel'
make: *** [stamp-build] Error 2

Any idea?
My system : powerbook 15'' alu , 1,25ghz with debian sid. I've already
managed to compile the 2.6.1rc1 without problem.

Thanks