Kirill Tkhai noted:

  Since deadline tasks share rt bandwidth, we must care about
  bandwidth timer set. Otherwise rt_time may grow up to infinity
  in update_curr_dl(), if there are no other available RT tasks
  on top level bandwidth.

RT task were in fact throttled right after they got enqueued,
and never executed again (rt_time never again went below rt_runtime).

Peter then proposed to accrue DL execution on rt_time only when
rt timer is active, and proposed a patch (this patch is a slight
modification of that) to implement that behavior. While this
solves Kirill problem, it has a drawback.

Indeed, Kirill noted again:

  It looks we may get into a situation, when all CPU time is shared
  between RT and DL tasks:

  rt_runtime = n
  rt_period  = 2n

  | RT working, DL sleeping  | DL working, RT sleeping      |
  -----------------------------------------------------------
  | (1)     duration = n     | (2)     duration = n         | (repeat)
  |--------------------------|------------------------------|
  | (rt_bw timer is running) | (rt_bw timer is not running) |

  No time for fair tasks at all.

While this can happen during the first period, if rq is always backlogged,
RT tasks won't have the opportunity to execute anymore: rt_time reached
rt_runtime during (1), suppose after (2) RT is enqueued back, it gets
throttled since rt timer didn't fire, replenishment is from now on eaten up
by DL tasks that accrue their execution on rt_time (while rt timer is
active - we have an RT task waiting for replenishment). FAIR tasks are
not touched after this first period. Ok, this is not ideal, and the situation
is even worse!

What above (the nice case), practically never happens in reality, where
your rt timer is not aligned to tasks periods, tasks are in general not
periodic, etc.. Long story short, you always risk to overload your system.

This patch is based on Peter's idea, but exploits an additional fact:
if you don't have RT tasks enqueued, it makes little sense to continue
incrementing rt_time once you reached the upper limit (DL tasks have their
own mechanism for throttling).

This cures both problems:

 - no matter how many DL instances in the past, you'll have an rt_time
   slightly above rt_runtime when an RT task is enqueued, and from that
   point on (after the first replenishment), the task will normally execute;

 - you can still eat up all bandwidth during the first period, but not
   anymore after that, remember that DL execution will increment rt_time
   till the upper limit is reached.

The situation is still not perfect! But, we have a simple solution for now,
that limits how much you can jeopardize your system, as we keep working
towards the right answer: RT groups scheduled using deadline servers.
Reported-by: NKirill Tkhai <tkhai@yandex.ru>
Signed-off-by: NJuri Lelli <juri.lelli@gmail.com>
Signed-off-by: NPeter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20140225151515.617714e2f2cd6c558531ba61@gmail.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

Commit 82b95800 ("sched/deadline: Test for CPU's presence explicitly")
changed how we check if a CPU returned by cpudeadline machinery is
valid. But, we don't want to call cpu_present() if best_cpu is
equal to -1. So, switch the order of tests inside WARN_ON().
Signed-off-by: NJuri Lelli <juri.lelli@gmail.com>
Signed-off-by: NPeter Zijlstra <peterz@infradead.org>
Cc: boris.ostrovsky@oracle.com
Cc: konrad.wilk@oracle.com
Cc: rostedt@goodmis.org
Link: http://lkml.kernel.org/r/1393238832-9100-1-git-send-email-juri.lelli@gmail.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

In deadline class we do not have group scheduling.

So, let's remove unnecessary

	X = X;

equations.
Signed-off-by: NKirill Tkhai <ktkhai@parallels.com>
Signed-off-by: NPeter Zijlstra <peterz@infradead.org>
Cc: Juri Lelli <juri.lelli@gmail.com>
Link: http://lkml.kernel.org/r/1393343543.4089.5.camel@tkhaiSigned-off-by: NIngo Molnar <mingo@kernel.org>

dequeue_entity() is called when p->on_rq and sets se->on_rq = 0
which appears to guarentee that the !se->on_rq condition is met.
If the task has done set_current_state(TASK_INTERRUPTIBLE) without
schedule() the second condition will be met and vruntime will be
incorrectly adjusted twice.

In certain cases this can result in the task's vruntime never increasing
past the vruntime of other tasks on the CFS' run queue, starving them of
CPU time.

This patch changes switched_from_fair() to use !p->on_rq instead of
!se->on_rq.

I'm able to cause a task with a priority of 120 to starve all other
tasks with the same priority on an ARM platform running 3.2.51-rt72
PREEMPT RT by writing one character at time to a serial tty (16550 UART)
in a tight loop. I'm also able to verify making this change corrects the
problem on that platform and kernel version.
Signed-off-by: NGeorge McCollister <george.mccollister@gmail.com>
Signed-off-by: NPeter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1392767811-28916-1-git-send-email-george.mccollister@gmail.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

Merge misc fixes from Andrew Morton.

* emailed patches from Andrew Morton akpm@linux-foundation.org>:
  MAINTAINERS: change mailing list address for Altera UART drivers
  Makefile: fix build with make 3.80 again
  MAINTAINERS: update L: misuses
  Makefile: fix extra parenthesis typo when CC_STACKPROTECTOR_REGULAR is enabled
  ipc,mqueue: remove limits for the amount of system-wide queues
  memcg: change oom_info_lock to mutex
  mm, thp: fix infinite loop on memcg OOM
  drivers/fmc/fmc-write-eeprom.c: fix decimal permissions
  drivers/iommu/omap-iommu-debug.c: fix decimal permissions
  mm, hwpoison: release page on PageHWPoison() in __do_fault()

The nios2-dev list has been moved to the RocketBoards infrastructure, so
adjust the address accordingly.
Signed-off-by: NTobias Klauser <tklauser@distanz.ch>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

According to Documentation/Changes, make 3.80 is still being supported
for building the kernel, hence make files must not make (unconditional)
use of features introduced only in newer versions.  Commit 8779657d
("stackprotector: Introduce CONFIG_CC_STACKPROTECTOR_STRONG") however
introduced an "else ifdef" construct which make 3.80 doesn't understand.

Also correct a warning message still referencing the old config option
name.

Apart from that I question the use of "ifdef" here (but it was used that
way already prior to said commit): ifeq (,y) would seem more to the
point.
Signed-off-by: NJan Beulich <jbeulich@suse.com>
Acked-by: NKees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

L: lines are for the email addresses of traditional mailing lists.
W: lines are for URLs.

Convert two L: misuses to W: links.
Signed-off-by: NJoe Perches <joe@perches.com>
Reported-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

An extra parenthesis typo introduced in 19952a92 ("stackprotector:
Unify the HAVE_CC_STACKPROTECTOR logic between architectures") is
causing the following error when CONFIG_CC_STACKPROTECTOR_REGULAR is
enabled:

  Makefile:608: Cannot use CONFIG_CC_STACKPROTECTOR: -fstack-protector not supported by compiler
  Makefile:608: *** missing separator.  Stop.
Signed-off-by: NFathi Boudra <fathi.boudra@linaro.org>
Acked-by: NKees Cook <keescook@chromium.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Commit 93e6f119 ("ipc/mqueue: cleanup definition names and
locations") added global hardcoded limits to the amount of message
queues that can be created.  While these limits are per-namespace,
reality is that it ends up breaking userspace applications.
Historically users have, at least in theory, been able to create up to
INT_MAX queues, and limiting it to just 1024 is way too low and dramatic
for some workloads and use cases.  For instance, Madars reports:

 "This update imposes bad limits on our multi-process application.  As
  our app uses approaches that each process opens its own set of queues
  (usually something about 3-5 queues per process).  In some scenarios
  we might run up to 3000 processes or more (which of-course for linux
  is not a problem).  Thus we might need up to 9000 queues or more.  All
  processes run under one user."

Other affected users can be found in launchpad bug #1155695:
  https://bugs.launchpad.net/ubuntu/+source/manpages/+bug/1155695

Instead of increasing this limit, revert it entirely and fallback to the
original way of dealing queue limits -- where once a user's resource
limit is reached, and all memory is used, new queues cannot be created.
Signed-off-by: NDavidlohr Bueso <davidlohr@hp.com>
Reported-by: NMadars Vitolins <m@silodev.com>
Acked-by: NDoug Ledford <dledford@redhat.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: <stable@vger.kernel.org>	[3.5+]
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Kirill has reported the following:

  Task in /test killed as a result of limit of /test
  memory: usage 10240kB, limit 10240kB, failcnt 51
  memory+swap: usage 10240kB, limit 10240kB, failcnt 0
  kmem: usage 0kB, limit 18014398509481983kB, failcnt 0
  Memory cgroup stats for /test:

  BUG: sleeping function called from invalid context at kernel/cpu.c:68
  in_atomic(): 1, irqs_disabled(): 0, pid: 66, name: memcg_test
  2 locks held by memcg_test/66:
   #0:  (memcg_oom_lock#2){+.+...}, at: [<ffffffff81131014>] pagefault_out_of_memory+0x14/0x90
   #1:  (oom_info_lock){+.+...}, at: [<ffffffff81197b2a>] mem_cgroup_print_oom_info+0x2a/0x390
  CPU: 2 PID: 66 Comm: memcg_test Not tainted 3.14.0-rc1-dirty #745
  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS Bochs 01/01/2011
  Call Trace:
    __might_sleep+0x16a/0x210
    get_online_cpus+0x1c/0x60
    mem_cgroup_read_stat+0x27/0xb0
    mem_cgroup_print_oom_info+0x260/0x390
    dump_header+0x88/0x251
    ? trace_hardirqs_on+0xd/0x10
    oom_kill_process+0x258/0x3d0
    mem_cgroup_oom_synchronize+0x656/0x6c0
    ? mem_cgroup_charge_common+0xd0/0xd0
    pagefault_out_of_memory+0x14/0x90
    mm_fault_error+0x91/0x189
    __do_page_fault+0x48e/0x580
    do_page_fault+0xe/0x10
    page_fault+0x22/0x30

which complains that mem_cgroup_read_stat cannot be called from an atomic
context but mem_cgroup_print_oom_info takes a spinlock.  Change
oom_info_lock to a mutex.

This was introduced by 947b3dd1 ("memcg, oom: lock
mem_cgroup_print_oom_info").
Signed-off-by: NMichal Hocko <mhocko@suse.cz>
Reported-by: N"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Masayoshi Mizuma reported a bug with the hang of an application under
the memcg limit.  It happens on write-protection fault to huge zero page

If we successfully allocate a huge page to replace zero page but hit the
memcg limit we need to split the zero page with split_huge_page_pmd()
and fallback to small pages.

The other part of the problem is that VM_FAULT_OOM has special meaning
in do_huge_pmd_wp_page() context.  __handle_mm_fault() expects the page
to be split if it sees VM_FAULT_OOM and it will will retry page fault
handling.  This causes an infinite loop if the page was not split.

do_huge_pmd_wp_zero_page_fallback() can return VM_FAULT_OOM if it failed
to allocate one small page, so fallback to small pages will not help.

The solution for this part is to replace VM_FAULT_OOM with
VM_FAULT_FALLBACK is fallback required.
Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: NMasayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Reviewed-by: NMichal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This 444 should have been octal.
Signed-off-by: NJoe Perches <joe@perches.com>
Cc: Alessandro Rubini <rubini@gnudd.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

These should have been octal.
Signed-off-by: NJoe Perches <joe@perches.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

It seems we forget to release page after detecting HW error.
Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Merge tag 'dmaengine-fixes-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine

Pull dmaengine fixes from Dan Williams:
 "Fix tasklet lifetime management in the ioat driver causing ksoftirqd
  to spin indefinitely.

    References:
    https://lkml.org/lkml/2014/1/27/282
    https://lkml.org/lkml/2014/2/19/672"

* tag 'dmaengine-fixes-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine:
  ioat: fix tasklet tear down

Pull MTD fixes from Brian Norris:
 "Two main MTD fixes:

  1. Read retry counting was off by one, so if we had a true ECC error
     (i.e., no retry voltage threshold would give a clean read), we
     would end up returning -EINVAL on the Nth mode instead of -EBADMSG
     after then (N-1)th mode

  2. The OMAP NAND driver had some of its ECC layouts wrong when
     introduced in 3.13, causing incompatibilities between the
     bootloader on-flash layout and the layout expected in Linux.  The
     expected layouts are now documented in the commit messages, and we
     plan to add this under Documentation/mtd/nand/ eventually"

* tag 'for-linus-20140225' of git://git.infradead.org/linux-mtd:
  mtd: nand: omap: fix ecclayout->oobfree->length
  mtd: nand: omap: fix ecclayout->oobfree->offset
  mtd: nand: omap: fix ecclayout to be in sync with u-boot NAND driver
  mtd: nand: fix off-by-one read retry mode counting

Pull m68k update from Geert Uytterhoeven:
  - More barrier.h consolidation
  - Sched_[gs]etattr() syscalls

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Wire up sched_setattr and sched_getattr
  m68k: Switch to asm-generic/barrier.h
  m68k: Sort arch/m68k/include/asm/Kbuild

Pull tensa fixes from Chris Zankel:
 "This series includes fixes for potentially serious bugs in the
  routines spilling processor registers to stack, as well as other
  issues and compiler errors and warnings.

   - allow booting xtfpga on boards with new uBoot and >128MBytes memory
   - drop nonexistent GPIO32 support from fsf variant
   - don't select USE_GENERIC_SMP_HELPERS
   - enable common clock framework support, set up ethoc clock on xtfpga
   - wire up sched_setattr and sched_getattr syscalls.
   - fix system call to spill the processor registers to stack.
   - improve kernel macro to spill the processor registers
   - export ccount_freq symbol
   - fix undefined symbol warning"

* tag 'xtensa-next-20140224' of git://github.com/czankel/xtensa-linux:
  xtensa: wire up sched_setattr and sched_getattr syscalls
  xtensa: xtfpga: set ethoc clock frequency
  xtensa: xtfpga: use common clock framework
  xtensa: support common clock framework
  xtensa: no need to select USE_GENERIC_SMP_HELPERS
  xtensa: fsf: drop nonexistent GPIO32 support
  xtensa: don't pass high memory to bootmem allocator
  xtensa: fix fast_syscall_spill_registers
  xtensa: fix fast_syscall_spill_registers
  xtensa: save current register frame in fast_syscall_spill_registers_fixup
  xtensa: introduce spill_registers_kernel macro
  xtensa: export ccount_freq
  xtensa: fix warning '"CONFIG_OF" is not defined'

Since commit 77873803 "net_dma: mark broken" we no longer pin dma
engines active for the network-receive-offload use case.  As a result
the ->free_chan_resources() that occurs after the driver self test no
longer has a NET_DMA induced ->alloc_chan_resources() to back it up.  A
late firing irq can lead to ksoftirqd spinning indefinitely due to the
tasklet_disable() performed by ->free_chan_resources().  Only
->alloc_chan_resources() can clear this condition in affected kernels.

This problem has been present since commit 3e037454 "I/OAT: Add
support for MSI and MSI-X" in 2.6.24, but is now exposed. Given the
NET_DMA use case is deprecated we can revisit moving the driver to use
threaded irqs.  For now, just tear down the irq and tasklet properly by:

1/ Disable the irq from triggering the tasklet

2/ Disable the irq from re-arming

3/ Flush inflight interrupts

4/ Flush the timer

5/ Flush inflight tasklets

References:
https://lkml.org/lkml/2014/1/27/282
https://lkml.org/lkml/2014/2/19/672

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: <stable@vger.kernel.org>
Reported-by: NMike Galbraith <bitbucket@online.de>
Reported-by: NStanislav Fomichev <stfomichev@yandex-team.ru>
Tested-by: NMike Galbraith <bitbucket@online.de>
Tested-by: NStanislav Fomichev <stfomichev@yandex-team.ru>
Reviewed-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Pull SELinux endianness fix from James Morris.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  SELinux: bigendian problems with filename trans rules

Pull s390 bug fixes from Martin Schwidefsky:
 "A couple of s390 bug fixes.  The PCI segment boundary issue is a nasty
  one as it can lead to data corruption"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/cio: Fix missing subchannels after CHPID configure on
  s390/pci/dma: use correct segment boundary size
  s390/compat: fix sys_sched_getattr compat wrapper
  s390/zcrypt: additional check to avoid overflow in msg-type 6 requests

Xtensa fixes for 3.14:
- allow booting xtfpga on boards with new uBoot and >128MBytes memory;
- drop nonexistent GPIO32 support from fsf variant;
- don't select USE_GENERIC_SMP_HELPERS;
- enable common clock framework support, set up ethoc clock on xtfpga;
- wire up sched_setattr and sched_getattr syscalls.
Signed-off-by: NChris Zankel <chris@zankel.net>

Pull ARM SoC fixes from Olof Johansson:
 "A collection of fixes for ARM platforms.  Most are fixes for DTS
  files, mostly from DT conversion on OMAP which is still finding a few
  issues here and there.

  There's a couple of small stale code removal patches that we usually
  queue for the next release instead, but they seemed harmless enough to
  bring in now.

  Also, a fix for backlight on some PXA platforms, and a cache
  configuration fix for Tegra, etc"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (25 commits)
  MAINTAINERS: add additional ARM BCM281xx/BCM11xxx maintainer
  ARM: tegra: only run PL310 init on systems with one
  ARM: tegra: Add head numbers to display controllers
  ARM: imx6: build pm-imx6q.c independently of CONFIG_PM
  ARM: tegra: fix RTC0 alias for Cardhu
  ARM: dove: dt: revert PMU interrupt controller node
  Documentation: dt: OMAP: Update Overo/Tobi
  ARM: dts: Add support for both OMAP35xx and OMAP36xx Overo/Tobi
  ARM: dts: omap3-tobi: Use the correct vendor prefix
  ARM: dts: omap3-tobi: Fix boot with OMAP36xx-based Overo
  ARM: OMAP2+: Remove legacy macros for zoom platforms
  ARM: OMAP2+: Remove MACH_NOKIA_N800
  ARM: dts: N900: add missing compatible property
  ARM: dts: N9/N950: fix boot hang with 3.14-rc1
  ARM: OMAP1: nokia770: enable tahvo-usb
  ARM: OMAP2+: gpmc: fix: DT ONENAND child nodes not probed when MTD_ONENAND is built as module
  ARM: OMAP2+: gpmc: fix: DT NAND child nodes not probed when MTD_NAND is built as module
  ARM: dts: omap3-gta04: Fix mmc1 properties.
  ARM: dts: omap3-gta04: Fix 'aux' gpio key flags.
  ARM: OMAP2+: add missing ARCH_HAS_OPP
  ...

Pull regulator fixes from Mark Brown:
 "Mostly unexciting driver fixes, plus one fix to lower the severity of
  the log message when we don't use an optional regulator - the fixes
  for ACPI system made this come up more often and it was correctly
  observed that it was causing undue concern for users"

* tag 'regulator-v3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: max14577: Fix invalid return value on DT parse success
  regulator: core: Change dummy supplies error message to a warning
  regulator: s5m8767: Add missing of_node_put
  regulator: s5m8767: Use of_get_child_by_name
  regulator: da9063: Bug fix when setting max voltage on LDOs 5-11

This patch excludes reserved-marker byte-position from oobfree->length
calculation. Thus all bytes from oobfree->offset till end of OOB are free.

CC: <stable@vger.kernel.org> # 3.13.x+
Signed-off-by: NPekon Gupta <pekon@ti.com>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>

1) In current implementation, ecclayout->oobfree->offset is calculated with
 respect to ecclayout->eccpos[0] which is incorrect because ECC bytes may not
 be stored contiguously in OOB.
 So, this patch calculates ecclayout->oobfree->offset with respect to last
 ECC byte-position 'eccpos[ecclayout->eccbytes-1]'.

2) ECC layout of some ecc-schemes expects reserved-markers at specific eccpos[]
 which should not be over-written by any file-system metadata.
 So this patch aligns oobfree->offset taking into account of such markers.

CC: <stable@vger.kernel.org> # 3.13.x+
Tested-by: NEnric Balletbo i Serra <eballetbo@gmail.com>
Tested-by: NStefan Roese <sr@denx.de>
Signed-off-by: NPekon Gupta <pekon@ti.com>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>

Fixes: commit a919e511
       mtd: nand: omap2: clean-up BCHx_HW and BCHx_SW ECC configurations in device_probe

Fixes ecclayout mismatch introduced in above commit for following ecc-schemes:
 - OMAP_ECC_BCH4_CODE_HW_DETECTION_SW
 - OMAP_ECC_BCH8_CODE_HW_DETECTION_SW
 However, this patch also touches other ecc-schemes as the fix required
 refactoring common code, into ecc-scheme specific code.

This patch aligns ecc-layout for below ecc-schemes as per reference [1],[2],[3]

 +---+------------+-------------++-------------+-------------+
 |OOB|BCH8_CODE_HW|BCH8_CODE_HW_||HAM1_CODE_HW |HAM1_CODE_HW |
 |pos|            | DETECTION_SW||(x8 device)  |(x16 device) |
 +---+------------+-------------++-------------+-------------+
 | 0 |BADBLK_MARK | BADBLK_MARK || BADBLK_MARK | BADBLK_MARK |
 | 1 |BADBLK_MARK | BADBLK_MARK || eccpos[0]   | BADBLK_MARK |
 | 2 | eccpos[0]  | eccpos[0]   || eccpos[1]   | eccpos[0]   |
 | 3 | eccpos[1]  | eccpos[1]   || eccpos[2]   | eccpos[1]   |
 | 4 | eccpos[2]  | eccpos[2]   || eccpos[3]   | eccpos[2]   |
 | 5 | eccpos[3]  | eccpos[3]   || eccpos[4]   | eccpos[3]   |
 | 6 | eccpos[4]  | eccpos[4]   || eccpos[5]   | eccpos[4]   |
 | 7 | eccpos[5]  | eccpos[5]   || eccpos[6]   | eccpos[5]   |
 | 8 | eccpos[6]  | eccpos[6]   || eccpos[7]   | eccpos[6]   |
 | 9 | eccpos[7]  | eccpos[7]   || eccpos[8]   | eccpos[7]   |
 |10 | eccpos[8]  | eccpos[8]   || eccpos[9]   | eccpos[8]   |
 |11 | eccpos[9]  | eccpos[9]   || eccpos[10]  | eccpos[9]   |
 |12 | eccpos[10] | eccpos[10]  || eccpos[11]  | eccpos[10]  |
 |13 | eccpos[11] | eccpos[11]  || oobfree[0]  | eccpos[11]  |
 |14 | eccpos[12] | eccpos[12]  || oobfree[1]  | oobfree[0]  |
 |15 | eccpos[13] | <reserved>  || oobfree[2]  | oobfree[1]  |
 +---+------------+-------------++-------------+-------------+
 |16 | eccpos[14] | eccpos[13]  || oobfree[3]  | oobfree[2]  |
 |...| [...]      | [...]       || [...]       | [...]       |
 |56 | eccpos[54] | eccpos[51]  || oobfree[43] | oobfree[42] |
 |57 | eccpos[55] | <reserved>  || oobfree[44] | oobfree[43] |
 +===+============+=============+==============+=============+
 |58 | oobfree[0] | oobfree[0]  || oobfree[45] | oobfree[44] |
 |59 | oobfree[1] | oobfree[1]  || oobfree[46] | oobfree[45] |
 |60 | oobfree[2] | oobfree[2]  || oobfree[47] | oobfree[46] |
 |61 | oobfree[3] | oobfree[3]  || oobfree[48] | oobfree[47] |
 |62 | oobfree[4] | oobfree[4]  || oobfree[49] | oobfree[48] |
 |63 | oobfree[5] | oobfree[5]  || oobfree[50] | oobfree[49] |
 +---+------------+-------------+--------------+-------------+

[1] ecc-layout expected by ROM code, as specified in SoC TRM under:
      Chapter="Initialization"
        Section="Device Initialization by ROM code"
            Sub-Section="Memory Booting"
                Heading="NAND"
                Figure="ECC Locations in NAND Spare Areas"

[2] ecc-layout updates in u-boot
    http://lists.denx.de/pipermail/u-boot/2013-November/167551.html

[3] u-boot configurations to match above ecc-layout are documented at
    https://processors.wiki.ti.com/index.php/Linux_Core_NAND_User%27s_Guide

CC: <stable@vger.kernel.org> # 3.13.x+
Reported-by: NEnric Balletbo Serra <eballetbo@iseebcn.com>
Tested-by: NEnric Balletbo i Serra <eballetbo@gmail.com>
Tested-by: NStefan Roese <sr@denx.de>
Signed-off-by: NPekon Gupta <pekon@ti.com>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>

Pull timer fix from Thomas Gleixner:
 "Serialize the registration of a new sched_clock in the currently ARM
  only generic sched_clock facilty to avoid sched_clock havoc"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched_clock: Prevent callers from seeing half-updated data

Pull x86 fixes from Thomas Gleixner:

 - a bugfix which prevents a divide by 0 panic when the newly introduced
   try_msr_calibrate_tsc() fails

 - enablement of the Baytrail platform to utilize the newfangled msr
   based calibration

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: tsc: Add missing Baytrail frequency to the table
  x86, tsc: Fallback to normal calibration if fast MSR calibration fails

Pull irq fixes from Thomas Gleixner:
 "Another four fixlets to tame the ARM orion irq chip"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip: orion: Fix getting generic chip pointer.
  irqchip: orion: clear stale interrupts in irq_startup
  irqchip: orion: use handle_edge_irq on bridge irqs
  irqchip: orion: clear bridge cause register on init

Pull USB fixes from Greg KH:
 "Here are a number of USB fixes for reported issues for 3.14-rc4

  The majority of these are for USB gadget, phy, and musb driver issues.
  And there's a few new device ids thrown in for good measure"

* tag 'usb-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: chipidea: need to mask when writting endptflush and endptprime
  usb: musb: correct use of schedule_delayed_work()
  usb: phy: msm: fix compilation errors when !CONFIG_PM_SLEEP
  usb: gadget: fix NULL pointer dereference
  usb: gadget: printer: using gadget_is_otg to check otg support at runtime
  phy: let phy_provider_register be the last step in registering PHY
  phy-core: Don't allow building phy-core as a module
  phy-core: Don't propagate -ENOSUPP from phy_pm_runtime_get_sync to caller
  phy-core: phy_get: Leave error logging to the caller
  phy,phy-bcm-kona-usb2.c: Add dependency on HAS_IOMEM
  usb: musb: correct use of schedule_delayed_work()
  usb: musb: do not sleep in atomic context
  USB: serial: option: blacklist interface 4 for Cinterion PHS8 and PXS8
  USB: EHCI: add delay during suspend to prevent erroneous wakeups
  usb: gadget: bcm63xx_udc: fix build failure on DMA channel code
  usb: musb: do not sleep in atomic context
  usb: gadget: s3c2410_udc: Fix build error
  usb: musb: core: Fix remote-wakeup resume
  usb: musb: host: Fix SuperSpeed hub enumeration
  usb: musb: fix obex in g_nokia.ko causing kernel panic

Pull TTY revert from Greg KH:
 "Here is a single commit, a revert of a sysfs file change that ended up
  breaking a userspace tool"

* tag 'tty-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Revert "tty: Set correct tty name in 'active' sysfs attribute"

Pull staging tree fix from Greg KH:
 "Here is a single android driver fix for 3.14-rc4 that fixes a reported
  problem in the binder driver"

* tag 'staging-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: binder: Fix death notifications

Pull char/misc fix from Greg KH:
 "Here is a single commit, to fix a reported problem in the mei driver"

* tag 'char-misc-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mei: set client's read_cb to NULL when flow control fails

Add myself as an additional maintainer for the Broadcom mobile
SoCs.
Signed-off-by: NMatt Porter <mporter@linaro.org>
Acked-by: NChristian Daudt <bcm@fixthebug.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Merge remote-tracking branches 'regulator/fix/da9063', 'regulator/fix/max14577' and 'regulator/fix/s5m8767' into regulator-linus