Hi,

My source files under sys/dev/acpi/acpica/Subsystem  were caught up
with acpica-unix-20030512.tar.gz, and it works fine for me.
 
This patch includes for sys/dev/acpi/acpi_ec.c.
I don't have acpi ec device, so can't test it.
   
  I have put that patch at:
      http://www.ann.hi-ho.ne.jp/~kanaoka/acpica-20030512.diff.gz


      % /usr/bin/md5 acpica-20030512.diff.gz
      MD5 (acpica-20030512.diff.gz) = 1b5a9d77e3a0df1f8b355ff4bca05689

You can try it like below:
  
   	# cd /usr/src
   	# zcat /somewhere/acpica-20030512.diff.gz | patch -p1 -E
  	# cd /sys/arch/i386/conf
   	# config your-config;cd ../compile/your-config
  	# make depend;make;make install
  
You can find changes for latest ACPI CA(20030512) at:
    http://developer.intel.com/technology/IAPC/acpi/downloads/CHANGES.txt
 
If you are interested in it, how about trying it?
Best Regards.
---
  Masanori Kanaoka	kanaoka@ann.hi-ho.ne.jp