2.5.40: undefined reference to __io_virt_debug

[Eric Buddington]

Kernel 2.5.40, attempted compile for Pentium II with most options
set to 'm', details available on request.

-Eric

-------------------------------------
ld -m elf_i386  -Ttext 0x100000 -e startup_32 head.o misc.o piggy.o -o vmlinux 
misc.o: In function `puts':
misc.o(.text+0x1d10): undefined reference to `__io_virt_debug'
misc.o(.text+0x1d4b): undefined reference to `__io_virt_debug'
misc.o(.text+0x1d76): undefined reference to `__io_virt_debug'
misc.o(.text+0x1da8): undefined reference to `__io_virt_debug'
make[2]: *** [vmlinux] Error 1