Fix panic in EC driver (Dom B)
Add a some more sanity checking (Richard Schaal)

A much needed (and widely tested) ACPI bugfix for kernel 2.5.28:
An u8 was casted into an u32, then all 32 bits were zeroed. This can cause
other values, e.g. "unsigned long flags" to be corrupted. When these
flags==0 are "restored", the system locks hard.

into osdl.org:/home/mochel/src/kernel/devel/linux-2.5-driverfs-rewrite

These are tied together a bit, so they're included in the same patch

Mainly, they move the taking of the inode's i_sem into the unlink and rmdir. 

driverfs_rmdir doesn't call driverfs_unlink anymore, as it checks if the directory is empty
and conditionally does d_delete on it.

fs/namei.c implements d_unhash, which is called in vfs_rmdir. This isn't exported (yet), 
so reimplement it here (at least until it's known that it's not needed or it's exported).

Add check for existence of dentry in driverfs_symlink and driverfs_mknod  (which the other creation
functions use).

Call driverfs_mkdir directly, instead of going through vfs.

This is the first of a series of patches to driverfs to _not_ use the vfs layer for file creation
and deletion. 
The VFS layer is allowing files and directories to be removed from userspace, which we don't want 
at all. 

Per Al Viro's suggesting, I am pushing the necessary checks from the vfs_* functions into the 
driverfs functions, and calling them directly from the kernel interface to driverfs.

This is the first, for file creation

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

The rewritten makefile for DocBook requires that working directory
is $(TOPDIR) therefore use -f Documentation/DocBook/Makefile to
invoke the docbook makefile.

To support the new DocBook makefile the script target needs to be located
the block that is checked for precense of a .config file.

kernel-doc-nano-HOWTO.txt updated to reflect new functionality
provided by docproc.
gen-all-syms and docgen description removed.
kernel-api.tmpl and parportbook.tmpl updated to specify files to search
for EXPORT-SYMBOL* to enable documentation of all relevant functions.

Massive cleanup of makefile.
Comments added as well.
Enabled by the new functionality provided by docproc
When generating HTML locate a new file in DocBook dir that points to
the book in question.

This is the first patch in a serie to clean-up the DocBook
Makefile.

docproc is extented to include the functionality previously provided by
gen-all-syms and docgen.  Furthermore the necessity to specify which
files to search for EXPORT_SYMBOL are removed, the information is now
read in the .tmpl files.

docproc is furthermore extended to generate dependency information.
gen-all-syms and docgen are deleted.

During processing of skbuff.h three warnings were issued,
because members of an enum within a struct were nor documented.
This patch fixes kernel-doc not to spit out these non-valid warnings.
Originally by Thunder.

Forward port from 2.4, originally by Alan Cox
 o Do not generate empty RefEntry's
 o Improved error reporting

Forward port from 2.4, originally by Christoph Hellwig

 o Changed targets in documentation/DocBook/Makefile
 o New filenames in DocBook/kernel-api.tmpl

This removes cli/sti from SPX registration code in IPX.  I decided to
use normal rw_semaphore instead of net_family_{write,read}_{lock,unlock}
used in net/socket.c.

I left SPX code itself alone: I do not use it and last time I checked it
it was very unreliable reliable transport.

This patch for 2.5.28 fixes two explicit accesses to thread_info->cpu
in generic code to use the new UP-optimised macros instead.

This patch for 2.5.28 reduces the stack frame size of
arch/i386/kernel/nmi.c:check_nmi_watchdog() from 4096 bytes
in the worst case to 128 bytes.

The problem with the current code is that it copies the entire
irq_stat[] array, when only a single field (__nmi_count) is of
interest. The irq_stat_t element type is only 28 bytes, but it
is also ____cacheline_aligned, and that blows the array up to
4096 bytes on SMP P4 Xeons, 2048 bytes on SMP K7s, and 1024 bytes
on SMP P5/P6s. The patch reduces this to NR_CPUS*4==128 bytes.

I've noticed that xtime_lock and timerlist_lock ends up on the same
cacheline  all the time (atleaset on x86).  Not a good thing for
loads with high xxx_timer and do_gettimeofday counts I guess (networking etc).

Here's a trivial fix.

This is a complete rewrite of the LDM driver (support for Windows
Dynamic Disks).  It incorporates Al Viro's recent partition handling
tidy ups.

Details:
  LDM Driver rewritten.  More efficient.  Much smaller memory footprint.

  The old driver was little more than a stopgap.
  The new driver is a complete rewrite
  based on a much better understanding of the database
  based on much more reverse engineering
  more able to spot errors and inconsistancies
  it has a much smaller memory footprint
  no longer considered experimental
  accompanied by brief info: Documentation/ldm.txt

On a ppc64 machine running 2.5.28 we were hitting this BUG in
__free_pages_ok:

BUG_ON(page->pte.chain != NULL);

In pte_chain_lock we use test_and_set_bit which implies a memory
barrier. In pte_chain_unlock we use clear_bit which has no memory
barriers so we need to add one.

Here's a patch from Christoph Hellwig and myself to supply write->read
semaphore downgrade, and also from Brian Watson to supply trylock for rwsems.

- in mkdir: we already hold parent directory's semaphore (c.f. driverfs_create_dir)
- in create: ditto (c.f. driverfs_create_file)
- in unlink: ditto (c.f. driverfs_remove_file) and file's i_sem is taken in vfs_unlink
- un lseek: take inode's i_sem (though I think we can replace this with a common lseek function...later)

Make sure the cpu argument to cpu_online() is evaluated for
side effects on UP too.

Things look rather like this..

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

values on input devices. This is something the X peoople
really wanted.
Rename input_devinfo to input_id, it's shorter and more 
to the point.
Remove superfluous printks in uinput.c
Clean up return values in evdev.c ioctl. 

comes to directions of movement and rotation, a mouse wheel should
be positive where it "rotates forward, away from the user". We had
the opposite in psmouse.c. Fixed this.

converter to atkbd.c - trivial. Remove ps2serkbd, because it's
not needed anymore.

input struct to userspace.

from a device belong together was implemented - input_sync() and
EV_SYN. Touches every input driver. The first to make use of it
is mousedev.c to properly merge events into PS/2 packets.

into twilight.ucw.cz:/home/vojtech/bk/input