/usr/src/linux# make siimage.ko
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  UPD     include/linux/utsrelease.h
  CC      arch/parisc/kernel/asm-offsets.s
In file included from include/asm/spinlock.h:5,
                 from include/asm/atomic.h:20,
                 from include/asm/bitops.h:7,
                 from include/linux/bitops.h:9,
                 from include/linux/thread_info.h:20,
                 from include/linux/preempt.h:9,
                 from include/linux/spinlock.h:49,
                 from include/linux/capability.h:45,
                 from include/linux/sched.h:44,
                 from arch/parisc/kernel/asm-offsets.c:31:
include/asm/processor.h:347: error: redefinition of 'prefetch'
include/linux/prefetch.h:43: error: previous definition of 'prefetch' was here
include/asm/processor.h:352: error: redefinition of 'prefetchw'
include/linux/prefetch.h:47: error: previous definition of 'prefetchw' was here
make[1]: *** [arch/parisc/kernel/asm-offsets.s] Error 1
make: *** [prepare0] Error 2