ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU

If a bank of memory spanning the 4GB boundary is added on a !CONFIG_LPAE
kernel then we will hang early during boot since the memory bank will
have wrapped around to zero.

This patch truncates memory banks for !LPAE configurations when the end
address is not representable in 32 bits.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE

Currently when ThumbEE is not enabled (!CONFIG_ARM_THUMBEE) the ThumbEE
register states are not saved/restored at context switch. The default state
of the ThumbEE Ctrl register (TEECR) allows userspace accesses to the
ThumbEE Base Handler register (TEEHBR). This can cause unexpected behaviour
when people use ThumbEE on !CONFIG_ARM_THUMBEE kernels, as well as allowing
covert communication - eg between userspace tasks running inside chroot
jails.

This patch sets up TEECR in order to prevent user-space access to TEEHBR
when !CONFIG_ARM_THUMBEE. In this case, tasks are sent SIGILL if they try to
access TEEHBR.

Cc: stable@vger.kernel.org
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jonathan Austin <jonathan.austin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ARM: 7386/1: jump_label: fixup for rename to static_key

c5905afb0 ("static keys: Introduce 'struct static_key'...") renamed
struct jump_label_key to struct static_key.  Fixup ARM for this to
eliminate these build warnings:

  include/linux/jump_label.h:113:2:
  warning: passing argument 1 of 'arch_static_branch' from incompatible pointer type
  include/asm/jump_label.h:17:82:
  note: expected 'struct jump_label_key *' but argument is of type 'struct static_key *'

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
x86-32: fix up strncpy_from_user() sign error

The 'max' range needs to be unsigned, since the size of the user address
space is bigger than 2GB.

We know that 'count' is positive in 'long' (that is checked in the
caller), so we will truncate 'max' down to something that fits in a
signed long, but before we actually do that, that comparison needs to be
done in unsigned.

Bug introduced in commit 92ae03f2ef99 ("x86: merge 32/64-bit versions of
'strncpy_from_user()' and speed it up").  On x86-64 you can't trigger
this, since the user address space is much smaller than 63 bits, and on
x86-32 it works in practice, since you would seldom hit the strncpy
limits anyway.

I had actually tested the corner-cases, I had only tested them on
x86-64.  Besides, I had only worried about the case of a pointer *close*
to the end of the address space, rather than really far away from it ;)

This also changes the "we hit the user-specified maximum" to return
'res', for the trivial reason that gcc seems to generate better code
that way.  'res' and 'count' are the same in that case, so it really
doesn't matter which one we return.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "Nothing too disasterous, the biggest thing being the removal of the
  regulator support for vcore in the AMBA driver; only one SoC was using
  this and it got broken during the last merge window, which then
  started causing problems for other people.  Mutual agreement was
  reached for it to be removed."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7386/1: jump_label: fixup for rename to static_key
  ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE
  ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU
  ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus
  ARM: 7383/1: nommu: populate vectors page from paging_init
  ARM: 7381/1: nommu: fix typo in mm/Kconfig
  ARM: 7380/1: DT: do not add a zero-sized memory property
  ARM: 7379/1: DT: fix atags_to_fdt() second call site
  ARM: 7366/3: amba: Remove AMBA level regulator support
  ARM: 7377/1: vic: re-read status register before dispatching each IRQ handler
  ARM: 7368/1: fault.c: correct how the tsk->[maj|min]_flt gets incremented
Linux 3.4-rc3
m68knommu: remove the unused bootlogo.h processing for 68EZ328 and 68VZ328

The 68EZ328 and 68VZ328 platforms currently try to process their bootlogo.h
to make it clean to include in asm files. This is no longer used, the
bootlogo.h file is now included only in C code, so remove all the processing
code in the 68EZ328 and 68VZ328 Makefiles.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
m68knommu: move and fix the 68VZ328 platform bootlogo.h

The 68EZ328/bootlogo.h is not actually used in the 68EZ328 platform code
at all. It is used by the 68VZ328 platform code though, so move it to be
with the rest of the 68VZ328 platform code.

Commit c0e0c89c089f4bd66dbbd1a44da90abe74fe3f02 ("fix broken boot logo
inclusion") modified the bootlogo code to not be included in asm code.
Modify 68VZ328/bootlogo.h so that the bootlogo bit map is named correctly
for direct use in the C code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
x86/amd: Remove broken links from comment and kernel message

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Link: http://lkml.kernel.org/r/20120411151238.GA4794@alberich.amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
x86: Handle failures of parsing immediate operands in the instruction decoder

This can happen if the instruction is much longer than the maximum length,
or if insn->opnd_bytes is manually changed.

This patch also fixes warnings from -Wswitch-default flag.

Reported-by: Prashanth Nageshappa <prashanth@linux.vnet.ibm.com>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jim Keniston <jkenisto@linux.vnet.ibm.com>
Cc: Linux-mm <linux-mm@kvack.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Anton Arapov <anton@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: yrl.pp-manager.tt@hitachi.com
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20120413032427.32577.42602.stgit@localhost.localdomain
Signed-off-by: Ingo Molnar <mingo@kernel.org>
ARM: ux500: Fix unmet direct dependency

A recent change to a Kconfig configuration saw MACH_U8500
remove TPS6105X selection. In doing so Kconfig stopped
selecting REGULATORS, which is still required. This patch
sees UX500_SOC_DB8500 explicitly select it instead.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
ARM: ux500: update defconfig

Some new drivers and changed Kconfig dependencies for the v3.4
kernel affecting the U8500 defconfig:

- The SOC config options are now brought in by default
- No need to explicitly select misc devices anymore
- I2C is selected by default
- We now have support for charging from the AB8500 so compile
  in this
- The regulator framework needs to be explictly selected

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drm/i915: don't clobber the special upscaling lvds timings

This regression has been introduced in

commit ca9bfa7eed20ea34e862804e62aae10eb159edbb
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sat Jan 28 14:49:20 2012 +0100

    drm/i915: fixup interlaced vertical timings confusion, part 1

Unfortunately that commit failed to take into account that the lvds
code does some special adjustements to the crtc timings for upscaling
an centering.

Fix this by explicitly computing crtc timings in the lvds mode fixup
function and setting a special flag in mode->private_flags if the crtc
timings have been adjusted.

v2: Add a comment to explain the new mode driver private flag,
suggested by Eugeni Dodonov.

v3: Kill the confusing and now redundant set_crtcinfo call in
intel_fixed_panel_mode, noticed by Chris Wilson.

Reported-and-Tested-by: Hans de Bruin <jmdebruin@xmsnet.nl>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43071
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
ARM: at91: Export at91_st_base

After commit 5e9cf5e (ARM: at91: make ST (System Timer) soc independent)
building at91rm9200_wdt as a module fails with following message
  ERROR: "at91_st_base" [drivers/watchdog/at91rm9200_wdt.ko] undefined!
  make[1]: *** [__modpost] Error 1
  make: *** [modules] Error 2

Export symbol to allow wdt driver to be built as a module again.

Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
[nicolas.ferre@atmel.com: use EXPORT_SYMBOL_GPL()]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91: Export at91_ramc_base

After commit f363c40 (ARM: at91: make sdram/ddr register base soc independent)
building at91_cf as a module fails with:
  ERROR: "at91_ramc_base" [drivers/pcmcia/at91_cf.ko] undefined!
  make[1]: *** [__modpost] Error 1
  make: *** [modules] Error 2

Export at91_ramc_base symbol to allow drivers using at91_ramc_*
functions to be built as modules again.

Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
[nicolas.ferre@atmel.com: modify slightly commit message]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91: Export at91_pmc_base

After commit b55149529d26 (ARM: at91/PMC: make register base soc independent)
building atmel_usba_udc as a module fails with following message
  ERROR: "at91_pmc_base" [drivers/usb/gadget/atmel_usba_udc.ko] undefined!
  make[1]: *** [__modpost] Error 1
  make: *** [modules] Error 2

Export symbol to allow driver to be built as a module again.

Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91: Export at91_matrix_base

at91_matrix_* macro's are used by at91_udc usb gadget driver,
which can be built as module, therefore we need to export the
variable containing matrix base address.

Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91: fix typo in at91_pmc_base assembly declaration

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91: remove empty at91_init_serial function

The real function is long gone and the empty one will generate warnings
when configured without Atmel serial:
  arch/arm/mach-at91/at91rm9200_devices.c:1176: warning: 'struct at91_uart_config' declared inside parameter list
  arch/arm/mach-at91/at91rm9200_devices.c:1176: warning: its scope is only this definition or declaration, which is probably not what you want

Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91: fix rm9200ek flash size

The flash size is 8MiB.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>