newbie needs help with modules

[<fh...@at...>]

I decided to try developing my driver projects as modules in order to save
reboot cycles.  When I do this, trying to follow the module programming
advice I got, I get unresolved symbols.  How do I get rid of these?  These
symbols appear to be routines burried in the kernel various places. 

The PowerUP SCSI module:

53c770.o: unresolved symbol virt_to_phys
53c770.o: unresolved symbol in_be16
53c770.o: unresolved symbol out_8
53c770.o: unresolved symbol in_8
53c770.o: unresolved symbol init_timer
53c770.o: unresolved symbol __fswab32
53c770.o: unresolved symbol virt_to_bus
53c770.o: unresolved symbol out_be32
53c770.o: unresolved symbol __restore_flags
53c770.o: unresolved symbol out_be16
53c770.o: unresolved symbol udelay

The Delfina Plus module:

dsp56k.o: unresolved symbol __get_user_bad
dsp56k.o: unresolved symbol __put_user_bad
dsp56k.o: unresolved symbol udelay

The Hypercom4+ module:

ser_hypercom4.o: unresolved symbol queue_task
ser_hypercom4.o: unresolved symbol mark_bh
ser_hypercom4.o: unresolved symbol __restore_flags
ser_hypercom4.o: unresolved symbol unregister_serial
ser_hypercom4.o: unresolved symbol register_serial

Fred