Erro na compilação do kernel

[Guilherme Mesquita Gondim <semente@netfor.com.br>]

Olá,

       Compilando meu kernel acontece o seguinte erro:

       --start-group \
           arch/i386/kernel/kernel.o arch/i386/mm/mm.o kernel/kernel.o 
mm/mm.o
fs/fs.o ipc/ipc.o \
                drivers/char/char.o drivers/block/block.o 
drivers/misc/misc.o
drivers/net/net.o drivers/media/media.o drivers/char/agp/agp.o
drivers/char/drm/drm.o drivers/ide/idedriver.o drivers/cdrom/driver.o
drivers/pci/driver.o drivers/pnp/pnp.o drivers/video/video.o
drivers/usb/usbdrv.o \
                    net/network.o \
                        /usr/src/linux-2.4.20/arch/i386/lib/lib.a
/usr/src/linux-2.4.20/lib/lib.a /usr/src/linux-2.4.20/arch/i386/lib/lib.a \
                            --end-group \
                                -o vmlinux
                            drivers/char/drm/drm.o: In function 
`sis_fb_alloc':
                            drivers/char/drm/drm.o(.text+0x71e6): 
undefined reference to
`sis_malloc'
                            drivers/char/drm/drm.o(.text+0x722d): 
undefined reference to `sis_free'
                            drivers/char/drm/drm.o: In function 
`sis_fb_free':
                            drivers/char/drm/drm.o(.text+0x7375): 
undefined reference to `sis_free'
                            drivers/char/drm/drm.o: In function 
`sis_final_context':
                            drivers/char/drm/drm.o(.text+0x7846): 
undefined reference to `sis_free'
                            make: ** [vmlinux] Erro 1

Estava tentando compilar o DRI da placa sis... alguém sabe o que está 
acontecendo? Acredito que esse drive seja necessário para meu tuxracer 
funcionar normalmente.

Obrigado, abraços,
Guilherme