Remove struct iobus.

There is a lot of duplication between struct device and struct iobus, both
in their members and the code in their interfaces. Waxing struct iobus
removes this duplication and makes things a bit simpler.

Patch 4: Add some default files for PCI devices.

This adds two files for PCI devices: 'irq' and 'resources'. They display
just those things and currently do nothing on write. These are the
examples for other subsystems to use for creating files ('Hey, look how
simple it is!')

Patch 3: Make default callbacks simpler.

I want to move as much to a 1 file/1 value model as possible. I haven't
come up with a clean way to enforce it except via social pressure.

This patch is a step in that direction. It:

- Reduces the output of 'power' to just the decimal state of the device
- Adds a 'name' file which exports just the device name
- Reduces the 'status' file to just export the bus ID. (This will change,
  since the bus ID is obvious based on what directory you're in, but it's
  another patch at another time)

Patch 1: Make device_driver_init() an initcall.
It declares it as subsys_initcall and removes the explicit call from
init/main.c::do_basic_setup().

Here is a patch to enhance xconfig to read the new Config.help files.
Olaf Dietsche wrote this, and Steven Cole passed it on to me.

Testing: Steven Cole tested it, and I tested it.

A trivial patch that fixes this irritation in my dmesg, 2.5.3:

megaraid: v1.18 (Release Date: Thu Oct 11 15:02:53 EDT 2001
)<5>megaraid: found 0x8086:0x1960:idx 0:bus 2:slot 5:func 1
scsi0 : Found a MegaRAID controller at 0xe089c000, IRQ: 12

Please apply.

Hi Linus,
    I've got strange idea and tried to build diskless machine around
2.5.3... Besides problem with segfaulting crc32 (it is initialized after
net/ipv4/ipconfig.c due to lib/lib.a being a library... I had to hardcode
lib/crc32.o before --start-group in main Makefile, but it is another
story) there is bad problem with NBD caused by BIO changes:

(1) request flags were immediately put into on-wire request format.
    In the past, we had 0=READ, !0=WRITE. Now only REQ_RW bit determines
    direction. As nbd-server from nbd distribution package treats any
    non-zero value as write, it performs writes instead of read. Fortunately
    it will die due to other consistency checks on incoming request, but...

(2) nbd servers handle only up to 10240 byte requests. So setting max_sectors
    to 20 is needed, as otherwise nbd server commits suicide. Maximum request size
    should be handshaked during nbd initialization, but currently just use
    hardwired 20 sectors, so it will behave like it did in the past.

This patch paves the way for a new driver which needs the
functionality.  Now parport_daisy_select actually _uses_ its mode
parameter.

	* drivers/parport/daisy.c: Make parport_daisy_select aware of
	its 'mode' parameter.
	* drivers/parport/ChangeLog: Updated.

This patch fixes a potential deadlock in ppdev.

	* drivers/char/ppdev.c: Watch out for errors from
	parport_claim_or_block.
	* drivers/parport/share.c: Watch out for signals.
	* drivers/parport/ChangeLog: Updated.

I finally found the reason that printer console sometimes acted up
(duh):

	* drivers/char/lp.c: Fix printer console.

This patch prevents ppdev from oopsing when the PPGETMODES ioctl is
used before a PPCLAIM.

	* drivers/char/ppdev.c: Fix an oops in PPGETMODES handling.

This patch (from 2.4.x) cleans up the use of the ECR in parport_pc.

	* drivers/parport/parport_pc.c: Integrate fixes and cleanups
	from Damian Gruszka (VScom).
	* drivers/parport/ChangeLog: Updated.

Gets sparc64 in sync with 2.5.3 final changes.

Missing smp_lock.h inclusion.

linux/malloc.h --> linux/slab.h

I made a typo the other weeks while renaming the interfaces for you,
oops.  Please apply, thanks.

MINOR --> minor
MKDEV --> mk_kdev

The usual "u64 is long long only on some platforms" problem.

I think I told you to revert this bit from 2.5.3, but here
it is in patch form anyways.  Whoever made this change didn't
read the driver, and well... didn't even build test it either :-)

Don't offer SunLANCE twice.

- Doug Ledford: i810 audio driver update
- Evgeniy Polyakov: update various SCSI drivers to new locking
- David Howells: syscall latency improvement, try 2
- Francois Romieu: dscc4 driver update
- Patrick Mochel: driver model fixes
- Andrew Morton: clean up a few details in ext3 inode initialization
- Pete Wyckoff: make x86 machine check print out right address..
- Hans Reiser: reiserfs update
- Richard Gooch: devfs update
- Greg KH: USB updates
- Dave Jones: PNPBIOS
- Nathan Scott: extended attributes
- Corey Minyard: clean up zlib duplication (triplication..)

- Asit Mallick: mtrr update
- Patrick Mochel: split up kernel/device.c into drivers/base
- Mikael Pettersson/Al Viro: fix missing in-core inode initialization
in ext2 introduced by Al's inode trimming
- David Miller: sparc and network updates
- Frank Davis: firewire video mmap page remapping fix
- me: fix configure help scripts to fix breakage noticed by Dave Jones
- Greg KH: USB updates
- Kai Germaschewski: ISDN fixes, Config.help entries
- Douglas Gilbert: SCSI doc update
- Ingo Molnar: x86 taskswitch optimizations, scheduler updates
- Mikael Pettersson: make APIC work on old external setups
- Al Viro: more inode trimming

- Jeff Garzik: net driver updates
- NIIBE Yutaka: SuperH update

- Patrick Mochel: devicefs locking cleanups, refcount fixes
- Brian Gerst: apic timer cleanup
- Adam Richter: fix loop over block device bio breakage, ipfwadm compile fix
- Peter Anvin: bootproto v2.03
- me: split up Configure.help over the subdirectories where it is used

- Patrick Mochel: initcall levels
- Patrick Mochel: devicefs updates, add PCI devices into the hierarchy
- Denis Oliver Kropp: neomagic fb driver
- David Miller: sparc64 and network updates
- Kai Mäkisara: scsi tape update
- Al Viro: more inode trimming, VFS cleanup
- Greg KH: USB update - proper urb allocations
- Eric Raymond: kdev_t updates for fb devices

- Al Viro: VFS inode allocation moved down to filesystem, trim inodes
- Greg KH: USB update, hotplug documentation
- Kai Germaschewski: ISDN update
- Ingo Molnar: scheduler tweaking ("J2")
- Arnaldo: emu10k kdev_t updates
- Ben Collins: firewire updates
- Björn Wesen: cris arch update
- Hal Duston: ps2esdi driver bio/kdev_t fixes
- Jean Tourrilhes: move wireless drivers into drivers/net/wireless,
update wireless API #1
- Richard Gooch: devfs race fix
- OGAWA Hirofumi: FATFS update

- Al Viro: fix new_inode() allocation
- undo initcall update
- cciss driver update

- David Howells: abtract out "current->need_resched" as "need_resched()"
- Frank Davis: ide-tape update for bio
- various: header file fixups
- Jens Axboe: fix up bio/ide/highmem issues
- Kai Germaschewski: ISDN update
- Tim Waugh: parport update
- Patrik Mochel: initcall update
- Greg KH: USB and Compaq PCI hotplug updates

- Al Viro: fix up silly problem in swapfile filp cleanups in 2.5.2
- Tachino Nobuhiro: fix another error return for swapfile filp code
- Robert Love: merge some of Ingo's scheduler fixes
- David Miller: networking, sparc and some scsi driver fixes
- Tim Waugh: parport update
- OGAWA Hirofumi: fatfs cleanups and bugfixes
- Roland Dreier: fix vsscanf buglets.
- Ben LaHaise: include file cleanup
- Andre Hedrick: IDE taskfile update

- Matt Domsch: combine common crc32 library
- Pete Zaitcev: ymfpci update
- Davide Libenzi: scheduler improvements
- Al Viro: almost there: "struct block_device *" everywhere
- Richard Gooch: devfs cpqarray update, race fix
- Rusty Russell: PATH_MAX should include the final '0' count
- David Miller: various random updates (mainly net and sparc)

- Davide Libenzi, Ingo Molnar: scheduler updates
- Greg KH: USB update
- Jean Tourrilhes: IrDA and wireless updates
- Jens Axboe: bio/block updates

- Kai Germaschewski: ISDN updates
- Al Viro: start moving buffer cache indexing to "struct block_device *"
- Greg KH: USB update
- Russell King: fix up some ARM merge issues
- Ingo Molnar: scalable scheduler

- Russell King: large ARM update
- Adam Richter et al: more kdev_t updates

- Greg KH: USB updates
- various: kdev_t updates
- Al Viro: more bread()/filesystem cleanups

- Jeff Garzik: fix up loop and md for struct kdev_t typechecking
- Jeff Garzik: improved old-tulip network driver
- Arnaldo: more scsi driver bio updates
- Kai Germaschewski: ISDN updates
- various: kdev_t updates

- Davide Libenzi: nicer timeslices for scheduler
- Arnaldo: wd7000 scsi driver cleanups and bio update
- Greg KH: USB update (including initial 2.0 support)
- me: strict typechecking on "kdev_t"

- Dave Jones: more merging, fix up last merge..
- release to sync with Dave

- Jens Axboe: more bio updates, fix some request list bogosity under load
- Al Viro: export seq_xxx functions
- Manfred Spraul: include file cleanups, pc110pad compile fix
- David Woodhouse: fix JFFS2 write error handling
- Dave Jones: start merging up with 2.4.x patches
- Manfred Spraul: coredump fixes, FS event counter cleanups
- me: fix SCSI CD-ROM sectorsize BIO breakage

- Christoph Hellwig: scsi_register_module cleanup
- Mikael Pettersson: apic.c LVTERR fixes
- Russell King: ARM update (including bio update for icside)
- Jens Axboe: more bio updates
- Al Viro: make ready to switch bread away from kdev_t..
- Davide Libenzi: scheduler cleanups
- Anders Gustafsson: LVM fixes for bio
- Richard Gooch: devfs update