I am attaching a patch which allows a kernel to be built with support
for HCDP as well as SPCR/DBGP defined ports with no conflict on machines
that support HCDP as well as SPCR/DBGP tables. HCDP table takes
precedence over SPCR/DBGP in this patch. So if the kernel finds HCDP
table on a machine, it will ignore the SPCR table if there is one. Also,
the current HCDP code renames the serial console port defined by HCDP to
always be ttyS0 while SPCR code uses ttyS4 for the console port. This
patch adds code to drivers/char/acpi_serial.c to rename the console port
to be ttyS0.

-- 
Khalid

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Khalid Aziz                                   Linux Systems Division
(970)898-9214                                        Hewlett-Packard
khalid@fc.hp.com                                    Fort Collins, CO