add csp dmac source files
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add csp dmac header files
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add csp chipc block source code
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add csp chipc inline functions
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add csp chipc hardware definition file
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add csp chipc hardware register file
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add misc wrapper headers for csp code
add ddrc register header file
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add mach-bcmring csp capability header files
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add remaining header files in include/mach directory
add entry-macro.S file
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

bcmring timer helper function, hardware register headers
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

implement dma support for bcmring
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add bcmring dma.h and dma_device.c
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

memory map addresses
memory map description and init functions
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

init irq and handler
add irq controller register file and header files
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add core.c, clock.c, and clock.h in mach-bcmring

implement timer init, clocksource init, amba device init
implement clock set/get enable/disable API
add dummy clkdev.h
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

add arch.c in mach-bcmring
add related header files in mach-bcmring
Signed-off-by: NLeo Chen <leochen@broadcom.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This reverts commit 9e9f46c4.

Quoting from the commit message:

 "At this point, it seems to solve more problems than it causes, so let's
  try using it by default.  It's an easy revert if it ends up causing
  trouble."

And guess what? The _CRS code causes trouble.
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* git://git.infradead.org/battery-2.6:
  da9030_battery: Fix race between event handler and monitor
  Add MAX17040 Fuel Gauge driver
  w1: ds2760_battery: add support for sleep mode feature
  w1: ds2760: add support for EEPROM read and write
  ds2760_battery: cleanups in ds2760_battery_probe()

Merge branches 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/{vfs-2.6,audit-current}

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  another race fix in jfs_check_acl()
  Get "no acls for this inode" right, fix shmem breakage
  inline functions left without protection of ifdef (acl)

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  audit: inode watches depend on CONFIG_AUDIT not CONFIG_AUDIT_SYSCALL

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Even though one cannot make use of the audit watch code without
CONFIG_AUDIT_SYSCALL the spaghetti nature of the audit code means that
the audit rule filtering requires that it at least be compiled.

Thus build the audit_watch code when we build auditfilter like it was
before cfcad62c

Clearly this is a point of potential future cleanup..
Reported-by: NFrans Pop <elendil@planet.nl>
Signed-off-by: NEric Paris <eparis@redhat.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

* 'futexes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: Fix the write access fault problem for real

commit 64d1304a (futex: setup writeable mapping for futex ops which
modify user space data) did address only half of the problem of write
access faults.

The patch was made on two wrong assumptions:

1) access_ok(VERIFY_WRITE,...) would actually check write access.

   On x86 it does _NOT_. It's a pure address range check.

2) a RW mapped region can not go away under us.

   That's wrong as well. Nobody can prevent another thread to call
   mprotect(PROT_READ) on that region where the futex resides. If that
   call hits between the get_user_pages_fast() verification and the
   actual write access in the atomic region we are toast again.

The solution is to not rely on access_ok and get_user() for any write
access related fault on private and shared futexes. Instead we need to
fault it in with verification of write access.

There is no generic non destructive write mechanism which would fault
the user page in trough a #PF, but as we already know that we will
fault we can as well call get_user_pages() directly and avoid the #PF
overhead.

If get_user_pages() returns -EFAULT we know that we can not fix it
anymore and need to bail out to user space.

Remove a bunch of confusing comments on this issue as well.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: stable@kernel.org

SLUB uses higher order allocations by default but falls back to small
orders under memory pressure. Make sure the GFP mask used in the initial
allocation doesn't include __GFP_NOFAIL.
Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Traditionally, we never failed small orders (even regardless of any
__GFP_NOFAIL flags), and slab will allocate order-1 allocations even for
small allocations that could fit in a single page (in order to avoid
excessive fragmentation).

Maybe we should remove this warning entirely, but before making that
judgement, at least limit it to bigger allocations.
Acked-by: NPekka Enberg <penberg@cs.helsinki.fi>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  Staging: octeon-ethernet: Fix race freeing transmit buffers.
  Staging: octeon-ethernet: Convert to use net_device_ops.
  MIPS: Cavium: Add CPU hotplugging code.
  MIPS: SMP: Allow suspend and hibernation if CPU hotplug is available
  MIPS: Add arch generic CPU hotplug
  DMA: txx9dmac: use dma_unmap_single if DMA_COMPL_{SRC,DEST}_UNMAP_SINGLE set
  MIPS: Sibyte: Fix build error if CONFIG_SERIAL_SB1250_DUART is undefined.
  MIPS: MIPSsim: Fix build error if MSC01E_INT_BASE is undefined.
  MIPS: Hibernation: Remove SMP TLB and cacheflushing code.
  MIPS: Build fix - include <linux/smp.h> into all smp_processor_id() users.
  MIPS: bug.h Build fix - include <linux/compiler.h>.

The existing code had the following race:

Thread-1                       Thread-2

inc/read in_use
                               inc/read in_use
inc tx_free_list[qos].len
                               inc tx_free_list[qos].len

The actual in_use value was incremented twice, but thread-1 is going
to free memory based on its stale value, and will free one too many
times.  The result is that memory is freed back to the kernel while
its packet is still in the transmit buffer.  If the memory is
overwritten before it is transmitted, the hardware will put a valid
checksum on it and send it out (just like it does with good packets).
If by chance the TCP flags are clobbered but not the addresses or
ports, the result can be a broken TCP stream.

The fix is to track the number of freed packets in a single location
(a Fetch-and-Add Unit register).  That way it can never get out of sync
with itself.

We try to free up to MAX_SKB_TO_FREE (currently 10) buffers at a time.
If fewer are available we adjust the free count with the difference.
The action of claiming buffers to free is atomic so two threads cannot
claim the same buffers.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Convert the driver to use net_device_ops as it is now mandatory.

Also compensate for the removal of struct sk_buff's dst field.

The changes are mostly mechanical, the content of ethernet-common.c
was moved to ethernet.c and ethernet-common.{c,h} are removed.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Thanks to Cavium Inc. for the code contribution and help.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The SMP implementation of suspend and hibernate depends on CPU hotplugging.
In the past we didn't have CPU hotplug so suspend and hibernation were not
possible on SMP systems.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Each platform has to add support for CPU hotplugging itself by providing
suitable definitions for the cpu_disable and cpu_die of the smp_ops
methods and setting SYS_SUPPORTS_HOTPLUG_CPU.  A platform should only set
SYS_SUPPORTS_HOTPLUG_CPU once all it's smp_ops definitions have the
necessary changes.  This patch contains the changes to the dummy smp_ops
definition for uni-processor systems.

Parts of the code contributed by Cavium Inc.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch does not change actual behaviour since dma_unmap_page is just
an alias of dma_unmap_single on MIPS.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Acked-by: NDan Williams <dan.j.williams@intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This fixes kernel.org bugzilla 13596, see
http://bugzilla.kernel.org/show_bug.cgi?id=13596

Reported-by: dvice_null@yahoo.com
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This fixes kernel.org bugzilla 13595, see
http://bugzilla.kernel.org/show_bug.cgi?id=13595

Reported-by: dvice_null@yahoo.com
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

We can't perform any flushes on SMP from swsusp_arch_resume because
interrupts are disabled.  A cross-CPU flush is unnecessary anyway
because all but the local CPU have already been disabled.  A local
flush is not needed either because we didn't change any mappings.  So
just delete the code.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Some of the were relying into smp.h being dragged in by another header
which of course is fragile.  <asm/cpu-info.h> uses smp_processor_id()
only in macros and including smp.h there leads to an include loop, so
don't change cpu-info.h.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

In the past this file somehow used to be dragged in.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>