Module Name:	src
Committed By:	bouyer
Date:		Thu Dec  3 13:30:01 UTC 1998

Modified Files:
	src/sys/dev/pci: pciide.c
Log Message:
Restore changes from revision 1.17:
"If a channel has no drives, do *not* unmap its I/O regions.
It's not really safe to use them for anything else, and in legacy mode it
will just cause us to probe the channel again as an ISA device."