MCA: delete all remaining traces of microchannel bus support.

Hardware with MCA bus is limited to 386 and 486 class machines
that are now 20+ years old and typically with less than 32MB
of memory.  A quick search on the internet, and you see that
even the MCA hobbyist/enthusiast community has lost interest
in the early 2000 era and never really even moved ahead from
the 2.4 kernels to the 2.6 series.

This deletes anything remaining related to CONFIG_MCA from core
kernel code and from the x86 architecture.  There is no point in
carrying this any further into the future.

One complication to watch for is inadvertently scooping up
stuff relating to machine check, since there is overlap in
the TLA name space (e.g. arch/x86/boot/mca.c).

Cc: Thomas Gleixner <[email protected]>
Cc: James Bottomley <[email protected]>
Cc: [email protected]
Acked-by: Ingo Molnar <[email protected]>
Acked-by: H. Peter Anvin <[email protected]>
Signed-off-by: Paul Gortmaker <[email protected]>

Documentation/00-INDEX

@@ -218,8 +218,6 @@ m68k/
 	- directory with info about Linux on Motorola 68k architecture.
 magic-number.txt
 	- list of magic numbers used to mark/protect kernel data structures.
-mca.txt
-	- info on supporting Micro Channel Architecture (e.g. PS/2) systems.
 md.txt
 	- info on boot arguments for the multiple devices driver.
 memory-barriers.txt

Documentation/DocBook/Makefile

@@ -6,7 +6,7 @@
 # To add a new book the only step required is to add the book to the
 # list of DOCBOOKS.
 
-DOCBOOKS := z8530book.xml mcabook.xml device-drivers.xml \
+DOCBOOKS := z8530book.xml device-drivers.xml \
 	    kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
 	    writing_usb_driver.xml networking.xml \
 	    kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \

Documentation/DocBook/kernel-api.tmpl

@@ -212,19 +212,6 @@ X!Edrivers/pci/hotplug.c
      <sect1><title>PCI Hotplug Support Library</title>
 !Edrivers/pci/hotplug/pci_hotplug_core.c
      </sect1>
-     <sect1><title>MCA Architecture</title>
-	<sect2><title>MCA Device Functions</title>
-           <para>
-              Refer to the file arch/x86/kernel/mca_32.c for more information.
-           </para>
-<!-- FIXME: Removed for now since no structured comments in source
-X!Earch/x86/kernel/mca_32.c
--->
-	</sect2>
-	<sect2><title>MCA Bus DMA</title>
-!Iarch/x86/include/asm/mca_dma.h
-	</sect2>
-     </sect1>
   </chapter>
 
   <chapter id="firmware">

Documentation/devices.txt

@@ -846,13 +846,7 @@ Your cooperation is appreciated.
 		    ...
 		 31 = /dev/tap15	16th Ethertap device
 
- 36 block	MCA ESDI hard disk
-		  0 = /dev/eda		First ESDI disk whole disk
-		 64 = /dev/edb		Second ESDI disk whole disk
-		    ...
-
-		Partitions are handled in the same way as IDE disks
-		(see major number 3).
+ 36 block	OBSOLETE (was MCA ESDI hard disk)
 
  37 char	IDE tape
 		  0 = /dev/ht0		First IDE tape

Documentation/eisa.txt

@@ -179,7 +179,7 @@ CONFIG_ALPHA_JENSEN or CONFIG_EISA_VLB_PRIMING are set.
 
 Converting an EISA driver to the new API mostly involves *deleting*
 code (since probing is now in the core EISA code). Unfortunately, most
-drivers share their probing routine between ISA, MCA and EISA. Special
+drivers share their probing routine between ISA, and EISA. Special
 care must be taken when ripping out the EISA code, so other busses
 won't suffer from these surgical strikes...
 

Documentation/kernel-parameters.txt

@@ -70,7 +70,6 @@ parameter is applicable:
 	M68k	M68k architecture is enabled.
 			These options have more detailed description inside of
 			Documentation/m68k/kernel-options.txt.
-	MCA	MCA bus support is enabled.
 	MDA	MDA console support is enabled.
 	MIPS	MIPS architecture is enabled.
 	MOUSE	Appropriate mouse support is enabled.