The ppc64 implementation of memcpy_to/from_io was bogus (used memcpy
which uses cache hints and thus is broken on non cacheable IO space).

This re-implements them with some simple/gross C code doing 32 bits
accesses when aligned and bytes accesses when not. 
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This fixes some possible rare issues with the hash code beeing called
with interrupts enabled from update_mmu_cache, and fixes some races in
the iSeries low level htab code by adding an array of spinlocks

This is actually an old patch already present in SLES kernel and that
got "missed" somewhat in the main tree, adapted to recent changes.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into kernel.bkbits.net:/home/davem/sparc-2.6

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into plexity.net:/home/dsaxena/src/linux-2.6-for-rmk

into plexity.net:/home/dsaxena/src/linux-2.5-bk

Can be used as serial port and console. Compliant with the OCP driver model.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>

#   Signed-off-by: Arun Sharma <arun.sharma@intel.com>
#   Signed-off-by: Tony Luck <tony.luck@intel.com>

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Don't assign to `retval' twice in a row.
Signed-off-by: Luiz Capitulino <lcapitulino@prefeitura.sp.gov.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix up HP copyrights and add licensing terms (GPL v2) for hp-agp.c and
pcdp.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Following patch adds support for the watchdog driver embedded in Intel's
IXP2000 family of network processors.  The architecture-specific bits of
IXP2000 support will be merged upstream via the ARM tree once all the
various drivers have been merged.
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Document the purpose of the "ptrace_list/ptrace_children" and
"children/sibling" lists.

Signed-off-by: <davidm@hpl.hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Mark the mac floppy controller driver as removable media.  This prevents an
entry in /proc/partitions.  Several tools will not try to access the floppy
anymore with this change.
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Convert ipmi_watchdog to also use module option `nowayout' as is done in
other watchdog drivers.

From: Corey Minyard <cminyard@mvista.com>

   The patch is good (same style as other watchdogs), but needs to have
   some documentation updated.  I've tacked that on.
Signed-off-by: Arkadiusz Miskiewicz <arekm@pld-linux.org>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

I think I understood why some ext2 fs corruption still happens even after
the last i_size fix.

what happened I believe is that the writepages layer got a not a fully
uptodate page (in turn with bh mapped on top of it), and then right before
unlocking the page and entering the writeback mode, it freed all the bh.
Without bh a not uptodate page will trigger a full readpage from disk, that
overwrites the pagecache before the multi-bio gets submitted, generating fs
corruption.

I believe the below patch should fix it (untested) against kernel CVS.

The testcases developed by Kurt showed the pagecache being overwritten with
on-disk data at block offsets, and Chris as well was wondering about races
between wait_on_page_writeback and readpage.  the below fix just explains
everything we've seen since not-fully-uptodate pages must have always bh on
them and the below patch enforces just that invariant, and it should fix
our pagecache-overwritten-by-disk-data problem.
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Remove the orphaned PC9800 boot code.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This is fairly self explanatory - ENOIOCTLCMD is an internal code outside
of the -1 to -511 range.  The correct return for an unknown ioctl is
-ENOTTY although some Linux devices return the incorrect -EINVAL result.
Patch-By: Alan Cox <alan@redhat.com>
OSDL Developer Certificate of Origin 1.0 included herein by reference
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

It's slightly hard to see how these variables are used; this patch adds a
short description.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This fixes a path where an error from reloading the partition table could be
lost.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Ursula Braun-Krahl <braunu@de.ibm.com>
From: Thomas Spatzier <tspat@de.ibm.com>
From: Peter Tiedemann <ptiedem@de.ibm.com>

network driver changes.
 - iucv: add missing symbolic links between /sys/bus/iucv/drivers/netiucv
   and /sys/class/net.
 - iucv: make use of the debug feature.
 - iucv: 0 vs. NULL cleanup, avoid build warnings.
 - iucv: remove unnecessary -ENODEV check after call to iucv_declare_buffer.
 - ctc: adjust debug feature log levels.
 - lcs: replace broken schedule_timeout call with msleep.
 - qeth: add missing link type.
 - qeth: treat add_hhlen attribute as decimal value.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Heiko Carstens <heiko.carstens@de.ibm.com>
From: Maxim Shchetynin <maxim@de.ibm.com>

zfcp host adapter changes:
 - Get rid of ZFCP_WAIT_EVENT_TIMEOUT macro.
 - Correct an error log mesage.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

s390 core changes:
 - Rework system call entry cleanup code to fix a potential asynchronous
   interrupt stack overflow if the user stack pointer happens to be in
   the same range as the asynchronous stack.
 - Replace broken schedule_timeout call with msleep.
 - Regenerate default configuration
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

We might as well recommend the user boot with the noapic kernel parameter
instead of filling poor Ingo's mailbox.
Signed-off-by: Zwane Mwaikambo <zwane@fsmlabs.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Arjan's new warning found a bug!

fs/ncpfs/inode.c: In function `ncp_notify_change':
fs/ncpfs/inode.c:960: warning: ignoring return value of `inode_setattr', declared with attribute warn_unused_result
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

ext2_readdir() is ignoring the set error return values and always returns
0.
Signed-off-by: Jan Blunck <j.blunck@tu-harburg.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The alsa driver for powermacs requires i2c support.
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Jan Topinski <simcha@chatka.org>

Add support to automatically disable laptop mode when the battery almost
runs out.  This prevents data loss when the battery actually runs out.
Signed-off-by: Bart Samwel <bart@samwel.tk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Bart Samwel <bart@samwel.tk>

A bunch of small laptop mode updates:

* Mention the laptop_mode and block_dump sysctls in the relevant docs,
  referring to the laptop-mode.txt. Improve description of what the
  laptop_mode knob means (i.e. seconds between last I/O and automatic
  sync).

* Document the most relevant config file options.

* Change the installation instructions in the laptop mode doc to describe
  the ACPI-bound version first, because this is the easiest. Explain
  the non-ACPI version afterwards. Added a reference to my "packaged
  version" of the scripts.

* Move the setting of hdparm and cpu frequency out of the ACPI script
  and into the core laptop mode script. Add config option DO_HD to
  enable hdparm. Add config setting HD to set device to do hdparm on.
  Rename Dax's CPU_MANAGE to DO_CPU, with 0/1 instead of yes/no, to
  improve consistency.

* Fix a problem where the root filesystem wouln't be remounted when
  /etc/mtab listed its type as "unknown". Deduce the type of "unknown"
  filesystems from /etc/fstab.

This depends on the patch that adds config files, which was submitted
to Linus by Dax Kelson on July 10.
Signed-off-by: Bart Samwel <bart@samwel.tk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Dax Kelson <dax@gurulabs.com>

Add support for a external configuration file for /sbin/laptop_mode, and
/etc/acpi/actions/battery.sh.  Convert battery.sh to use CPUFreq (off by
default) instead of CPU throttling (that was off by default).

Cleanup some formating for 80 columns. 

All changes were written by me on a plane flight from Philadelphia to Salt
Lake City on July 9th.  :)

(Note from Bart Samwel: was submitted to Linus earlier, this patch is
unchanged from that.  I needed to submit this into -mm for now because my
other changes are dependent on Dax's changes.)
Signed-off-by: Bart Samwel <bart@samwel.tk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Here is a small fix to enable muting ESS Maestro sound card thanks to the
up/down buttons: when has reached the driver's minimum (!  this is
something like -dB value), just mute.  (It was working in OSS driver, but
not in ALSA)
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Make code for hlist_for_each_safe use better code (same as
hlist_for_each_entry_safe).  Get rid of comment about prefetch, because
that was fixed a while ago.  Only current use of this is in the bridge
code, that I maintain.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Quite a few functions in lib/string.c are not exported.  I ran into this
trying to use strnchr() in a module.

This patch
 - exports every function defined in lib/string.c
 - adds some missing __HAVE_ARCH_xxx defines for i386
 - gets rid of the exports of functions from lib/string.c in arch/s390
   (BTW, why is s390 exporting things NOVERS?)
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Geert Uytterhoeven <geert@linux-m68k.org>

These four are called from fb_show_logo, which is exported symbol, called
by fbcon_switch.

From: Domen Puncer <domen@coderock.org>
Signed-off-by: Maximilian Attems
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>