This patch is from Linas Vepstas <linas@austin.ibm.com>.

Race conditions during system shutdown after a firmware flash can sometimes
lead to an invalid pointer deref (deref to freed memory).  This patch fixes
this.  In addition, it makes sure that the proc entries created by the
firmware flash module are removed when the module is unloaded. 
Signed-off-by: Linas Vepstas <linas@linas.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

When the EEH (enhanced i/o error handling) hardware on pSeries detects
various kinds of PCI errors, it immediately freezes and isolates the slot
of the offending PCI card.  We get to know about that by noticing that
reads from the device return all-1s, and then we have to do a firmware call
to find out whether the all-1s value was due to a slot isolation.

This patch adds a notifier so that other parts of the system (e.g.  the RPA
PCI hotplug driver) can know that a slot isolation event has occurred and
take whatever recovery action is appropriate.  The notifier is called in a
workqueue function, although the read from the device that noticed the
all-1s value may have been at interrupt level.  As a precaution, if we keep
trying to read from the device at interrupt level, and do 1000 reads
without the workqueue getting a chance to run, we panic, on the grounds
that we presumably have a badly-written driver which will spin forever in
its interrupt routine, e.g.  waiting for a bit in a device register to go
to 0.

This patch is based on an earlier patch by Linas Vepstas <linas@linas.org>.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch removes many sparse warnings from the xmon code.  Mostly K&R
function declarations and 0-instead-of-NULLs.  There are still a whole
bunch of warnings in xmon/ppc-opc.c, which is a copy of a file from
binutils.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch squashes a handful of assorted sparse warnings in the ppc64
code.  Should be pretty much trivial and self explanatory.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Only compile vio.c on iSeries and pSeries, since other PPC64 platforms
(PowerMac) don't use virtual IO.  The resulting #ifdefs in dma.c are kind
of ugly, but at least contained, and I can't see a nicer way of doing it
for the time being.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Since we directly -include $(clear_L2_L3) when needed, we need to point to
the full path of it.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

With this we're back to the times when changing skbuff.h only triggers
rebuild of _net_ related stuff 8)

This uncovered a bug in rmap.h, that was not including mm.h to get the
definition of struct vm_area_struct, working by luck.
Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Stephen Smalley notes that send_sigurg isn't mediated by LSM in the same
manner as send_sigio.  Patch below is a slight modification of Stephen's
original patch.  It moves the security_file_send_sigiotask() hook into the
sigio_perm().  The hook's fd and reason arguments are replaced with the
signum.  sigio_perm() and it's callers are updated to pass the signum
through to the hook.  In send_sigio case, the signum is simply fown->signum
or SIGIO when signum is 0, however in send_sigurg the kernel doesn't use
fown->signum, it always sends SIGURG.

From: Stephen Smalley <sds@epoch.ncsc.mil>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add support for x86_64 arch. to 'make checkstack' (checkstack.pl).
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Acked-by: Jrn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Uses the zero length array which seems to be quite abundant throughout the
tree to reduce the size of the zone padding to zero.

1536 before, 1152 afterwards for me.

Also try to be a bit smarter about getting commonly accessed fields
together, which surely can't be worse than before.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

sound/oss/msnd.c: In function `msnd_enable_irq':
sound/oss/msnd.c:278: warning: implicit declaration of function `enable_irq'
sound/oss/msnd.c: In function `msnd_disable_irq':
sound/oss/msnd.c:307: warning: implicit declaration of function `disable_irq'

sound/oss/msnd.c:323: `msnd_get_num_devs' undeclared here (not in a function)
sound/oss/msnd.c:323: initializer element is not constant
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch shifts the key-related error codes up by one and inserts an
ECANCELED error code where not already defined.  It seems that has been
defined in glibc without passing it back to the kernel:-/
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Patch adds a check of the return value and returns -EFAULT if
__copy_to_user fails.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This was the wrong fix - back it out and try again later.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This allows for low-latency BKL contention even with
preemption. Previously, since preemption is disabled
over context switches, re-acquiring the kernel lock when
resuming a process would be non-preemtible.

Jeff already mistakenly sent in a user of this macro, so we should
probably add the macro itself too.
Signed-off-by: Hanna Linder <hannal@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The stop_self thing is accessed unconditionally from pSeries_setup.c

This will get rid of the stack recursion possibility that can occur if
an IRQ happens to hit the IRQ return path right after we've reset
preempt_count() to 0 and are about to disable interrupts again.
Trivially fixed by just moving the preempt count update to inside the
interrupt disable.

This makes the current PREEMPT_ACTIVE method fully work for IRQ
recursions.

Avoid naming confusion concerning "pc_debug" which is widely used by drivers
be renaming the PCMCIA "driver services" variant to ds_pc_debug. The module
parameter stays the same, thanks to module_param_named().
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.de>
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 pobox.com:/garz/repo/net-drivers-2.6

into pobox.com:/garz/repo/net-drivers-2.6

into pobox.com:/garz/repo/net-drivers-2.6

into pobox.com:/garz/repo/net-drivers-2.6

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

SCx200_ACB is a PCI driver and thus should depend on PCI
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Remove unneeded cast that causes a warning (cy_isa_addresses is an array
of unsigned ints).
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/ntfs/compress.c calls v{malloc,free}() without including <linux/vmalloc.h>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The recent patch to clean up user accesses introduced a memory leak.  If
write_buf is reallocated, the old buffer isn't freed.  Also, since kfree
can take nulls, I removed the if from the other kfree.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch removes some bogus struct definitions from prom.h that aren't
used anymore after the other pending ppc64 patches have been applied.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch does a few cleanups of arch/ppc64/kernel/prom_init.c, making
the RTAS instanciation code more readable & more robust, fixing a bug
in the code bringing in additional CPUs (would work with IBM firmware,
but not with another firmware of an upcoming platform), plus remove some
old commented out cruft left-over from the big cleanup.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Splits arch/ppc64/kernel/smp.c into 3 different files, smp.c, pSeries_smp.c and
iSeries_smp.c, thus removing most of the #define mess in those files and making
it easier to add a new platform.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch reworks the code that deals with matching PCI devices
with Open Firmware device nodes. This code made several incorrect
assumptions and can be simplified significantly. The main functional
difference now is that PHBs are no longer special cased, but that
shouldn't cause any specific problem.

It also fixes a problem where u3_iommu.c wouldn't work for PCI
devices that lacked a matching OF device node.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch fixes a few issues in the ppc64 pci code, notably some
incorrect parsing of Open Firmware "ranges" when setting up host
bridge resources that would cause a problem with some future
platforms, a default mapping of the ISA IOs if the OF "isa" node
lacks a "ranges" property, and a safeguard in pci_scan_all_fns()
in case a pci<->OF node mapping cannot be established.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch applies on top of previously posted "ppc64: Move PCI IO mapping
from pSeries_pci.c to pci.c".

It does cosmetic cleanups & add some debug macros to pci.c without actually
changing any functionality. Further patches against ppc64 pci.c that I'll
post will be against a file already patched with this one.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

My previous patch exposed the internals of the ppc_md.  data structure
to drivers, which wasn't nice, this new patch cleans that up.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch adds a ppc64 implementation of the routine providing
the list of default 8250 serial ports. It provides a empty list
by default unless the platform code fills it, and it provides
a generic function for user by Open Firmware based machines which
fills the list based on serial ports found in the OF device-tree.

It depends on the previous patch adding the generic support for
this to the 8250 driver.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>