The assembly code used to callback into Open Firmware client
interface in 32 bits mode used to backup the stack pointer in
the SPRG2 register.

That upsets Apple's implementation of Open Firmware significantly
and maybe others, causing them to crash in _some_ operations,
apparently the trigger is to cause a segment or hash table
fault, typically happens when letting that code initialize the
second display.

This patch fixes it, along with other cleanups of that asm code,
it did unnecessary register restores and backing up the stack
pointer is actually useless anyway.

Strangely, I though I fixed that a long time ago, but it was still
broken in the current tree...

Drivers like radeonfb fail to find the OF device matching a given PCI
device on the G5 AGP bus because of some bus renumbering tricks.  This
patch fixes the problem by fixing the bus numbers in the OF node.  This
corrects radeonfb and other drivers looking for EDID / PLL datas in the
OF node.

into ppc970.osdl.org:/home/torvalds/v2.5/linux

Especially with REGPARM these things actually matter.

This fixes possible lockups in pmac_zilog when beeing flooded with
incoming data (not that other serial drivers share the same race, I told
Russel about it already).  It also fixes some SCC initialization
problems, add some PM callback, and fix the irda setup code.

This does cosmetic changes the pmac_zilog, changing the use of "up" as
an identifier in favor "uap" to avoid collision with semaphores, use
proper debug macros, and a few other cosmetic bits.

From Jan-Benedict Glaw <jbglaw@lug-owl.de>

Original patch from Stephen Hemminger

Move last bits of code out of irsyms and onto irmod.c where
initialization happens.

Move irda_debug parameter out of irsyms.c into irmod.c
and make it a new style module parameter.

irda_device_setup can now be static, only called from alloc_irdadev.

Also, make type __u16 rather than unsigned short to
match input parameter.

Also, make get_{saddr,daddr} inline and rename
lmp_reasons to irlmp_reasons.

This got fixed in 2.4, but somehow got missed in 2.6.

This is a cleaner fix for the previous bogon fix.

- Move free_block prototype, and ac_entry and ac_data functions up in file.

- Use list_for_each_entry in cpuup_callback.

- Remove unneccessary g_cpucache_up in cpuup_callback.

- Make reap_timer_func take CPU number as data, and check if that is
  offline before rescheduing (noop without CONFIG_HOTPLUG_CPU).

Levent Serinol <levent.serinol@mynet.com> found that the hotplug cpu
patch broke Sparc64.  I introduced a num_possible_cpus(), which
Sparc64 already has.  Remove the Sparc64 one.

I also removed Sparc64's cpu_online() macro: it's in linux/cpumask.h
already.

Note that without CONFIG_HOTPLUG_CPU, online cpus == possible cpus, so
substitutions are a noop.

- Changes show_stat to print out stats for every possible cpu, not
  just online CPUs.

- Allocate mem in stat_open on possible, not online_cpus.

- Add conventient macros to cpu.h: especially cpu_is_offline() for
  testing if a cpu is still online.

- Add a num_possible_cpus() similar to num_online_cpus(), and define
  cpu_possible_mask for UP.

- Allow printk on down cpus once system is running.

- Mask cpumask with possible, not online cpus, for sys_getaffinity().

Extracts core of drain_pages() for hotcpu use.  Trivial.

Hotplug CPU needs to drain pages on a downed CPU (usually it's the
current cpu).  Introduce "__drain_pages", make the CPU an argument,
and expose it if CONFIG_HOTPLUG_CPU as well as CONFIG_PM.

into ppc970.osdl.org:/home/torvalds/v2.5/linux

into redhat.com:/spare/repo/via-crypto-2.5

into ppc970.osdl.org:/home/torvalds/v2.5/linux

Promise driver uses a custom error handling function, so we need
the fix that was applied to the libata core:  the SCSI error
handling thread requires that we complete commands using a special
completion function, since the normal one doesn't work inside
the error handling thread.

The following patch is a very crude one to at least not make sata block
suspend-to-ram entirely. Probably you want more powermanagement handling as
well... but it's a start

into ppc970.osdl.org:/home/torvalds/v2.5/linux

The pcnet32 driver will hang after a few frames (<30) with the 79C971
(and probably the 79C972 though I don't have the hardware to prove it).
By interrupting slightly more frequently the hang will not occur.