There are no I/O ports on the DECstation whatsoever in any configuration 
as neither the CPU nor the peripheral buses used have a concept of such.

Signed-off-by: Maciej W. Rozycki <redacted>
---

 Please apply.

  Maciej

patch-mips-2.6.21-20070502-dec-no_ioport-0
diff -up --recursive --new-file linux-mips-2.6.21-20070502.macro/arch/mips/Kconfig linux-mips-2.6.21-20070502/arch/mips/Kconfig

--- linux-mips-2.6.21-20070502.macro/arch/mips/Kconfig	2007-05-02 04:55:32.000000000 +0000
+++ linux-mips-2.6.21-20070502/arch/mips/Kconfig	2007-05-27 22:19:35.000000000 +0000

@@ -177,6 +177,7 @@ config MACH_DECSTATION
 	bool "DECstations"
 	select BOOT_ELF32
 	select DMA_NONCOHERENT
+	select NO_IOPORT
 	select SYS_HAS_EARLY_PRINTK
 	select IRQ_CPU
 	select SYS_HAS_CPU_R3000

@@ -943,6 +944,9 @@ config MIPS_NILE4
 config MIPS_DISABLE_OBSOLETE_IDE
 	bool
 
+config NO_IOPORT
+	def_bool n
+
 config GENERIC_ISA_DMA_SUPPORT_BROKEN
 	bool