Bug - building kernel 2.5.12 - fbcon-cfb8.c

gcc -D__KERNEL__ -I/usr/src/linux-2.5.12/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2 -march=athlon -DKBUILD_BASENAME=fbcon_cfb8 -DEXPORT_SYMTAB -c fbcon-cfb8.c fbcon-cfb8.c: In function `fbcon_cfb8_bmove':
fbcon-cfb8.c:55: structure has no member named screen_base' fbcon-cfb8.c:56: structure has no member named screen_base' fbcon-cfb8.c:66: structure has no member named screen_base' fbcon-cfb8.c:67: structure has no member named screen_base' fbcon-cfb8.c:74: structure has no member named screen_base' fbcon-cfb8.c:75: structure has no member named screen_base' fbcon-cfb8.c:52: warning: src' might be used uninitialized in this function fbcon-cfb8.c:52: warning: dst' might be used uninitialized in this function fbcon-cfb8.c: In function `fbcon_cfb8_clear':
fbcon-cfb8.c:100: structure has no member named screen_base' fbcon-cfb8.c:96: warning: dest' might be used uninitialized in this function fbcon-cfb8.c: In function `fbcon_cfb8_putc':
fbcon-cfb8.c:118: structure has no member named screen_base' fbcon-cfb8.c:114: warning: dest' might be used uninitialized in this function fbcon-cfb8.c: In function `fbcon_cfb8_putcs':
fbcon-cfb8.c:165: structure has no member named screen_base' fbcon-cfb8.c:160: warning: dest0' might be used uninitialized in this function
fbcon-cfb8.c: In function `fbcon_cfb8_revc':
fbcon-cfb8.c:222: structure has no member named screen_base' fbcon-cfb8.c:219: warning: dest' might be used uninitialized in this function fbcon-cfb8.c: In function `fbcon_cfb8_clear_margins':
fbcon-cfb8.c:247: structure has no member named screen_base' fbcon-cfb8.c:250: structure has no member named screen_base' make[3]: *** [fbcon-cfb8.o] Error 1
make[3]: Leaving directory `/usr/src/linux-2.5.12/drivers/video' make[2]: *** [first_rule] Error 2
make[2]: Leaving directory `/usr/src/linux-2.5.12/drivers/video' make[1]: *** [_subdir_video] Error 2
make[1]: Leaving directory `/usr/src/linux-2.5.12/drivers'
make: *** [_dir_drivers] Error 2

Regards,  Treeve