Merge branch 'delete-mca' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull the MCA deletion branch from Paul Gortmaker:
 "It was good that we could support MCA machines back in the day, but
  realistically, nobody is using them anymore.  They were mostly limited
  to 386-sx 16MHz CPU and some 486 class machines and never more than
  64MB of RAM.  Even the enthusiast hobbyist community seems to have
  dried up close to ten years ago, based on what you can find searching
  various websites dedicated to the relatively short lived hardware.

  So lets remove the support relating to CONFIG_MCA.  There is no point
  carrying this forward, wasting cycles doing routine maintenance on it;
  wasting allyesconfig build time on validating it, wasting I/O on git
  grep'ping over it, and so on."

Let's see if anybody screams.  It generally has compiled, and James
Bottomley pointed out that there was a MCA extension from NCR that
allowed for up to 4GB of memory and PPro-class machines.  So in *theory*
there may be users out there.

But even James (technically listed as a maintainer) doesn't actually
have a system, and while Alan Cox claims to have a machine in his cellar
that he offered to anybody who wants to take it off his hands, he didn't
argue for keeping MCA support either.

So we could bring it back.  But somebody had better speak up and talk
about how they have actually been using said MCA hardware with modern
kernels for us to do that.  And David already took the patch to delete
all the networking driver code (commit a5e371f61ad3: "drivers/net:
delete all code/drivers depending on CONFIG_MCA").

* 'delete-mca' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  MCA: delete all remaining traces of microchannel bus support.
  scsi: delete the MCA specific drivers and driver code
  serial: delete the MCA specific 8250 support.
  arm: remove ability to select CONFIG_MCA

1 files changed, 0 insertions, 169 deletions

diff --git a/drivers/mca/mca-bus.c b/drivers/mca/mca-bus.c
deleted file mode 100644
index ada5ebbaa255..000000000000
--- a/drivers/mca/mca-bus.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/* -*- mode: c; c-basic-offset: 8 -*- */
-
-/*
- * MCA bus support functions for sysfs.
- *
- * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
- *
-**-----------------------------------------------------------------------------
-**  
-**  This program is free software; you can redistribute it and/or modify
-**  it under the terms of the GNU General Public License as published by
-**  the Free Software Foundation; either version 2 of the License, or
-**  (at your option) any later version.
-**
-**  This program is distributed in the hope that it will be useful,
-**  but WITHOUT ANY WARRANTY; without even the implied warranty of
-**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-**  GNU General Public License for more details.
-**
-**  You should have received a copy of the GNU General Public License
-**  along with this program; if not, write to the Free Software
-**  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-**
-**-----------------------------------------------------------------------------
- */
-
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/mca.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-
-/* Very few machines have more than one MCA bus.  However, there are
- * those that do (Voyager 35xx/5xxx), so we do it this way for future
- * expansion.  None that I know have more than 2 */
-static struct mca_bus *mca_root_busses[MAX_MCA_BUSSES];
-
-#define MCA_DEVINFO(i,s) { .pos = i, .name = s }
-
-struct mca_device_info {
-	short pos_id;		/* the 2 byte pos id for this card */
-	char name[50];
-};
-
-static int mca_bus_match (struct device *dev, struct device_driver *drv)
-{
-	struct mca_device *mca_dev = to_mca_device (dev);
-	struct mca_driver *mca_drv = to_mca_driver (drv);
-	const unsigned short *mca_ids = mca_drv->id_table;
-	int i = 0;
-
-	if (mca_ids) {
-		for(i = 0; mca_ids[i]; i++) {
-			if (mca_ids[i] == mca_dev->pos_id) {
-				mca_dev->index = i;
-				return 1;
-			}
-		}
-	}
-	/* If the integrated id is present, treat it as though it were an
-	 * additional id in the id_table (it can't be because by definition,
-	 * integrated id's overflow a short */
-	if (mca_drv->integrated_id && mca_dev->pos_id ==
-	    mca_drv->integrated_id) {
-		mca_dev->index = i;
-		return 1;
-	}
-	return 0;
-}
-
-struct bus_type mca_bus_type = {
-	.name  = "MCA",
-	.match = mca_bus_match,
-};
-EXPORT_SYMBOL (mca_bus_type);
-
-static ssize_t mca_show_pos_id(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	/* four digits, \n and trailing \0 */
-	struct mca_device *mca_dev = to_mca_device(dev);
-	int len;
-
-	if(mca_dev->pos_id < MCA_DUMMY_POS_START)
-		len = sprintf(buf, "%04x\n", mca_dev->pos_id);
-	else
-		len = sprintf(buf, "none\n");
-	return len;
-}
-static ssize_t mca_show_pos(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	/* enough for 8 two byte hex chars plus space and new line */
-	int j, len=0;
-	struct mca_device *mca_dev = to_mca_device(dev);
-
-	for(j=0; j<8; j++)
-		len += sprintf(buf+len, "%02x ", mca_dev->pos[j]);
-	/* change last trailing space to new line */
-	buf[len-1] = '\n';
-	return len;
-}
-
-static DEVICE_ATTR(id, S_IRUGO, mca_show_pos_id, NULL);
-static DEVICE_ATTR(pos, S_IRUGO, mca_show_pos, NULL);
-
-int __init mca_register_device(int bus, struct mca_device *mca_dev)
-{
-	struct mca_bus *mca_bus = mca_root_busses[bus];
-	int rc;
-
-	mca_dev->dev.parent = &mca_bus->dev;
-	mca_dev->dev.bus = &mca_bus_type;
-	dev_set_name(&mca_dev->dev, "%02d:%02X", bus, mca_dev->slot);
-	mca_dev->dma_mask = mca_bus->default_dma_mask;
-	mca_dev->dev.dma_mask = &mca_dev->dma_mask;
-	mca_dev->dev.coherent_dma_mask = mca_dev->dma_mask;
-
-	rc = device_register(&mca_dev->dev);
-	if (rc)
-		goto err_out;
-
-	rc = device_create_file(&mca_dev->dev, &dev_attr_id);
-	if (rc) goto err_out_devreg;
-	rc = device_create_file(&mca_dev->dev, &dev_attr_pos);
-	if (rc) goto err_out_id;
-
-	return 1;
-
-err_out_id:
-	device_remove_file(&mca_dev->dev, &dev_attr_id);
-err_out_devreg:
-	device_unregister(&mca_dev->dev);
-err_out:
-	return 0;
-}
-
-/* */
-struct mca_bus * __devinit mca_attach_bus(int bus)
-{
-	struct mca_bus *mca_bus;
-
-	if (unlikely(mca_root_busses[bus] != NULL)) {
-		/* This should never happen, but just in case */
-		printk(KERN_EMERG "MCA tried to add already existing bus %d\n",
-		       bus);
-		dump_stack();
-		return NULL;
-	}
-
-	mca_bus = kzalloc(sizeof(struct mca_bus), GFP_KERNEL);
-	if (!mca_bus)
-		return NULL;
-
-	dev_set_name(&mca_bus->dev, "mca%d", bus);
-	sprintf(mca_bus->name,"Host %s MCA Bridge", bus ? "Secondary" : "Primary");
-	if (device_register(&mca_bus->dev)) {
-		kfree(mca_bus);
-		return NULL;
-	}
-
-	mca_root_busses[bus] = mca_bus;
-
-	return mca_bus;
-}
-
-int __init mca_system_init (void)
-{
-	return bus_register(&mca_bus_type);
-}