We don't need the spinlock to protect the lists (at least not now), since 
we have a semaphore to synchronize all operations device PM operations.

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

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

This is a port of some smp fixes I did for 2.4 floppy.c

Andrew did the re-diffing.

This removes some function stubs from 6 watchdog drivers.

The VFS already returns -EINVAL in cases where fop->read == NULL, so
there's no need to duplicate the code 6 times.  This patch removes the
stubs and is compile tested.

From Matt Tolentino:

  Here's a small patch to change several data types from u64 to
  unsigned long in efi.h.  These changes enable the use of the
  same data structures and function prototypes for ia32 EFI kernels.

This applies on top of Takayoshi's interrupt polarity fix and just
makes things a tiny bit more consistent.

Is acpi_irq_to_vector() even needed anymore?  I don't see any
references to it.

The patch below removes the .weak symbol stuff from iosapic.c.

As far as I can tell, iosapic.c is compiled for every flavor except
the simulator.  I tried to boot the HP_SIM kernel on ski, but it
seems to loop in find_save_locs().  This happens both with and
without this patch, so maybe I have a local problem.  (I started
with a clean tree, did make

As in_atomic() uses kernel_locked() which is in smp_lock.h.

sn2 still doesn't use ACPI to describe PCI busses on the system (I'm
working on it), so we have to do it the old fashioned way.  This patch
also includes a few other fixes.

The attached patch (against 2.6) helps IA-32 applications take advantage of the
generic 32 bit (fs/compat_ioctl.c) ioctl handlers.

The patch was created by Matt Helsley <matthltc at us.ibm.com> for 2.4 and
has been changed slightly to match 2.6.

The implementation compromises performance for correctness.

Add include to fix compilation on x86-64

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

Ack'd by Russell King as well.

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

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

- Split calls into 
  - device_pm_suspend() [ Saving device state. ]
  - device_pm_power_down() [ Powering devices down. ]
  - device_pm_power_up() [ Powering devices up. ]
  - device_pm_resume() [ Restoring device state. ]

- Walk local dpm_active list when suspending devices, and move devices to 
  dpm_suspended list when ->suspend() is called. 
- Walk dpm_suspended list to power down devices (with interrrupts enabled.)
  - Try to power down devices with IRQs on. 
  - If they succeed, move them to dpm_off list.
  - If they return -EAGAIN, move them to dpm_off_irq list. 
- Disable interrupts and suspend devices needed interrupts off. 

- Do converse on resume 
  - power on devices that need interrupts off and move them to 
    dpm_suspended.
  - Enable interrupts.
  - Power on all other devices and move them to dpm_suspended.
  - Restore state of all devices and move them to dpm_active. 

The attached patch implements core dump functionality for IA-32
applications running on ia64.

We should amend that test for zombies to include the "dead" state as
well.

 Having necessary resources, I've decided to take over the maintenance of
the defxx driver for the PDQ-based family of DEC FDDI controllers (the
DEFEA for EISA and the DEFPA for PCI are the models currently handled).

I've talked to Larry, the original author and the last maintainer of the
code, and he's said he'd be happy about it.  He's asked me to update his
long-outdated contact information.

Here is a patch to update the driver to the PCI version of the DMA API.

The patch includes appropriate status and contact information updates.

into kernel.bkbits.net:/home/mochel/linux-2.5-power

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

From Jay Estabrook <Jay.Estabrook@compaq.com>.

From Jay Estabrook <Jay.Estabrook@compaq.com>.

From Jay Estabrook <Jay.Estabrook@compaq.com>.

From: Nathan Scott <nathans@sgi.com>

XFS wants to use page->private as a bitmap of uptodate indicators for
sub-page-sized blocks (which is one of the things ->provate was intended
for).

But someone needs to initialise ->private somewhere.  best to do it in the
page allocator, so the zeroness of a new page's ->private becomes a
system-wide thing.

From: john stultz <johnstul@us.ibm.com>

I've found a race in the mtrr ipi_handler() and set_mtrr() functions.

Basically the server, set_mtrr() does the following:

  1.1 initialize a flag
  1.2 send ipi
  1.3 waits for all cpus to check in
  1.4 toggle flag
  1.5 do stuff
  1.6 wait for all cpus to check out
  1.7 toggle flag again
  1.8 return

While the clients, running ipi_handler() do the following:

  2.1 check in
  2.2 wait for flag
  2.3 do stuff
  2.4 check out
  2.5 wait for flag
  2.6 return

The problem is the flag is on the servers stack! So if 1.7 and 1.8
executes before 2.5 happens, the client's pointer to the flag becomes
invalid (likely overwritten) which causes the client to never see the
flag change, hanging the box.

The patch fixes that by adding a final synchronisation step in which the
controlling CPU waits for all the IPI'ed CPUs to complete.

From: Martin Pool <mbp@samba.org>

ia64_mv_irq_desc returns a 'struct irq_desc', which had a forward declaration
but did not actually exist.  We're currently using a silly anonymous struct
typedefed to irq_desc_t.

Now add the structure name as well.