2.4/2.5 kernels suffer from an infinitely long hang when a serial tty device
is closed, and there are characters waiting to be sent.  The hang occurs in
tty_wait_until_sent.

There is a timeout 'closing_wait' which defines how long to wait for the TX
buffers to empty; the problem is that the serial layer totally ignores it.
It is stored in two structures, 'info' and 'state'.  It is initialised in
the 'state' structure, but used from the 'info' structure.

It turns out that 'hub6' was also missing.

I'm not currently clear what the expected behaviour should be when the
timeout is changed via setserial, and others have the port open - I've
opted to preserve the timeout until all users close the port.  It's
trivial to change this behaviour though.

Mostly from 2.4.17 / 18pre.
- Code cleanup
- Fix suspend/resume on several chipsets
- Add support for i820.

Make spinlocks etc use subsections of their parent sections instead of
an ELF section of their own - needed for newer binutils when the parent
sector is removed. 

Newer Athlons have means of checking if they are SMP capable or not.
This code adds checks that printk a warning on systems not intended
for SMP, and set the taint flag that modutils is already aware of.
The taint code is also improved to use defines instead of magic numbers.

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux

swap_info_struct became pretty much superfluous.  As we are minimizing
kdev_t usage anyway, I took the opportunity to remove swap_device
member, and replace the remaining usages with SWP_BLOCKDEV bit flag.

Adding SWP_BLOCKDEV in turn motivated a small cleanup of the
SWP_xxx bit flags and their usage.

Patch has been in light testing for a couple weeks, and
has been glanced at by Al.  "looks sane"

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux

* Initialize interface carrier state in speedo_open.
* Update previous netif_carrier_{on,off} change to use
  linux/mii.h constants.

Contributor: Andrew Morton, with modifications from me

on all RX interrupts.  Prior to this fix, RX FIFO overrun and RX
buffer overrun interrupts did not trigger an RX poll; now they do.

Contributor: Manfred Spraul

via netif_carrier_{on,off}.  Some placeholders to do this were
already in the code, making this an even easier and more obvious patch.

Also, decrease time until next link beat check, if link beat
is not present.  (previously the code would wait 60 seconds until
next check, regardless of current link state)

Contributor: Stefan Rompf, with changes from me

* Add support for Conexant tulip clones.
* Do not store eeprom data on stack (128 or 512 bytes), it's a
large object, and also, we already have a copy in kmalloc'd RAM.

Contributor: Pavel Roskin

by cleaning up the pcnet32 namespace a bit.
  
s/PORT_/PCNET32_PORT_/ for local constants, to avoid conflicting
with linux/ethtool.h.
  
Contributor: William Lee Irwin III

"some" systems with "some" cables see a large amount of errors,
due to a hardware bug.  This bug is (apparently) not probe-able;
however it only appears on rare reference boards and the like,
so we simply add a config option and default the option to OFF.

Further detail:
When CONFIG_NATSEMI_CABLE_MAGIC option is enabled, PMDCSR_VAL
register value becomes 0x1898, a value provided by a NatSemi
app note.  This enables a workaround for a hardware bug
which is (apparently) not probe-able.  Luckily the hardware bug
is (apparently) not common either, so we default to disabling
this workaround.

Contributor: Tim Hockin

the size of the Tx data buffer list without cause.
Spotted by Dave Jones.

nfsd_read() slightly cleaned up.

initialize proc_inode properly for /proc/self/

logics in nfsd_lookup() cleaned up (see above, only more so ;-/)

new helper - exp_get_by_name(client, vfsmount, dentry).  Used
in places where we travers mountpoint.

logics in exp_get() cleaned up (it's kernel, not IOCCC, damnit...)

exp_child() and exp_parent() take super_block instead of kdev_t.

exp_find() is gone (never used).

unused arguments (and dead code) removed from exp_rootfh().

Get rid of NFSCTL_GETFH.

    - fix the replacement mistake of xxx_thread_flag
    - fix the miss test of PT_PTRACED flag

OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

The first fix changes get_wchan() and the second one fixed what DaveM noticed.

into home.transmeta.com:/home/torvalds/v2.5/linux

Fixe another typo in the recent llseek cleanups.  Typo was spotted by
Miloslav Trmac ...  hopefully the last.

Switch over ext3, ufs, reiserfs, msdos, vfat, isofs, qnx4, hpfs, efs,
udf, romfs, bfs, affs, hfs, adfs, cramfs, ntfs, jffs, jffs2 and freevxfs
to new ->get_sb(). 

Kill ->read_super() that is thus no longer used.

into rum.normnet.org:/spare/work/gkernel-2.5

into rum.normnet.org:/spare/work/gkernel-2.5

into burns.home.kernel.dk:/usr/local/kernel/BK/linux-2.5

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux