Commit Graph

39039 Commits

Author SHA1 Message Date
Gregory CLEMENT
a3b30e7210 ARM: mvebu: enable Armada 38x RTC driver in mvebu_v7_defconfig
Now that the Armada 38x RTC driver has been pushed, let's enable it in
mvebu_v7_defconfig.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Arnaud Ebalard <arno@natisbad.org>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Boris BREZILLON <boris.brezillon@free-electrons.com>
Cc: Lior Amsalem <alior@marvell.com>
Cc: Tawfik Bayouk <tawfik@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-13 21:21:44 -08:00
Gregory CLEMENT
a73c730541 ARM: mvebu: add Device Tree description of RTC on Armada 38x
The Marvell Armada 38x SoCs contains an RTC which differs from the RTC
used in the other mvebu SoCs until now.  This commit adds the Device Tree
description of this interface at the SoC level.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Arnaud Ebalard <arno@natisbad.org>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Boris BREZILLON <boris.brezillon@free-electrons.com>
Cc: Lior Amsalem <alior@marvell.com>
Cc: Tawfik Bayouk <tawfik@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-13 21:21:43 -08:00
Arnaud Ebalard
1a67e256db ARM: mvebu: ISL12057 rtc chip can now wake up RN102, RN102 and RN2120
Now that alarm support for ISL12057 chip is available w/ the specific
"isil,irq2-can-wakeup-machine" property, let's use that feature of the
driver dedicated to NETGEAR ReadyNAS 102, 104 and 2120 specific routing of
RTC Alarm IRQ#2 pin; on those devices, this pin is not connected to the
SoC but to a PMIC, which allows the device to be powered up when RTC alarm
rings.

For that to work, the chip needs to be explicitly marked as a device
wakeup source using this "isil,irq2-can-wakeup-machine" boolean property.
This makes 'wakealarm' sysfs entry available to configure the alarm.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Peter Huewe <peter.huewe@infineon.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Darshana Padmadas <darshanapadmadas@gmail.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Landley <rob@landley.net>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-13 21:21:42 -08:00
Andrey Ryabinin
cb9e3c292d mm: vmalloc: pass additional vm_flags to __vmalloc_node_range()
For instrumenting global variables KASan will shadow memory backing memory
for modules.  So on module loading we will need to allocate memory for
shadow and map it at address in shadow that corresponds to the address
allocated in module_alloc().

__vmalloc_node_range() could be used for this purpose, except it puts a
guard hole after allocated area.  Guard hole in shadow memory should be a
problem because at some future point we might need to have a shadow memory
at address occupied by guard hole.  So we could fail to allocate shadow
for module_alloc().

Now we have VM_NO_GUARD flag disabling guard page, so we need to pass into
__vmalloc_node_range().  Add new parameter 'vm_flags' to
__vmalloc_node_range() function.

Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Konstantin Serebryany <kcc@google.com>
Cc: Dmitry Chernenkov <dmitryc@google.com>
Signed-off-by: Andrey Konovalov <adech.fo@gmail.com>
Cc: Yuri Gribov <tetra2005@gmail.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-13 21:21:42 -08:00
Linus Torvalds
b9085bcbf5 Fairly small update, but there are some interesting new features.
Common: Optional support for adding a small amount of polling on each HLT
 instruction executed in the guest (or equivalent for other architectures).
 This can improve latency up to 50% on some scenarios (e.g. O_DSYNC writes
 or TCP_RR netperf tests).  This also has to be enabled manually for now,
 but the plan is to auto-tune this in the future.
 
 ARM/ARM64: the highlights are support for GICv3 emulation and dirty page
 tracking
 
 s390: several optimizations and bugfixes.  Also a first: a feature
 exposed by KVM (UUID and long guest name in /proc/sysinfo) before
 it is available in IBM's hypervisor! :)
 
 MIPS: Bugfixes.
 
 x86: Support for PML (page modification logging, a new feature in
 Broadwell Xeons that speeds up dirty page tracking), nested virtualization
 improvements (nested APICv---a nice optimization), usual round of emulation
 fixes.  There is also a new option to reduce latency of the TSC deadline
 timer in the guest; this needs to be tuned manually.
 
 Some commits are common between this pull and Catalin's; I see you
 have already included his tree.
 
 ARM has other conflicts where functions are added in the same place
 by 3.19-rc and 3.20 patches.  These are not large though, and entirely
 within KVM.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM update from Paolo Bonzini:
 "Fairly small update, but there are some interesting new features.

  Common:
     Optional support for adding a small amount of polling on each HLT
     instruction executed in the guest (or equivalent for other
     architectures).  This can improve latency up to 50% on some
     scenarios (e.g. O_DSYNC writes or TCP_RR netperf tests).  This
     also has to be enabled manually for now, but the plan is to
     auto-tune this in the future.

  ARM/ARM64:
     The highlights are support for GICv3 emulation and dirty page
     tracking

  s390:
     Several optimizations and bugfixes.  Also a first: a feature
     exposed by KVM (UUID and long guest name in /proc/sysinfo) before
     it is available in IBM's hypervisor! :)

  MIPS:
     Bugfixes.

  x86:
     Support for PML (page modification logging, a new feature in
     Broadwell Xeons that speeds up dirty page tracking), nested
     virtualization improvements (nested APICv---a nice optimization),
     usual round of emulation fixes.

     There is also a new option to reduce latency of the TSC deadline
     timer in the guest; this needs to be tuned manually.

     Some commits are common between this pull and Catalin's; I see you
     have already included his tree.

  Powerpc:
     Nothing yet.

     The KVM/PPC changes will come in through the PPC maintainers,
     because I haven't received them yet and I might end up being
     offline for some part of next week"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (130 commits)
  KVM: ia64: drop kvm.h from installed user headers
  KVM: x86: fix build with !CONFIG_SMP
  KVM: x86: emulate: correct page fault error code for NoWrite instructions
  KVM: Disable compat ioctl for s390
  KVM: s390: add cpu model support
  KVM: s390: use facilities and cpu_id per KVM
  KVM: s390/CPACF: Choose crypto control block format
  s390/kernel: Update /proc/sysinfo file with Extended Name and UUID
  KVM: s390: reenable LPP facility
  KVM: s390: floating irqs: fix user triggerable endless loop
  kvm: add halt_poll_ns module parameter
  kvm: remove KVM_MMIO_SIZE
  KVM: MIPS: Don't leak FPU/DSP to guest
  KVM: MIPS: Disable HTW while in guest
  KVM: nVMX: Enable nested posted interrupt processing
  KVM: nVMX: Enable nested virtual interrupt delivery
  KVM: nVMX: Enable nested apic register virtualization
  KVM: nVMX: Make nested control MSRs per-cpu
  KVM: nVMX: Enable nested virtualize x2apic mode
  KVM: nVMX: Prepare for using hardware MSR bitmap
  ...
2015-02-13 09:55:09 -08:00
Andy Lutomirski
f56141e3e2 all arches, signal: move restart_block to struct task_struct
If an attacker can cause a controlled kernel stack overflow, overwriting
the restart block is a very juicy exploit target.  This is because the
restart_block is held in the same memory allocation as the kernel stack.

Moving the restart block to struct task_struct prevents this exploit by
making the restart_block harder to locate.

Note that there are other fields in thread_info that are also easy
targets, at least on some architectures.

It's also a decent simplification, since the restart code is more or less
identical on all architectures.

[james.hogan@imgtec.com: metag: align thread_info::supervisor_stack]
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: David Miller <davem@davemloft.net>
Acked-by: Richard Weinberger <richard@nod.at>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Tested-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chen Liqin <liqin.linux@gmail.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-12 18:54:12 -08:00
Mel Gorman
4d94246699 mm: convert p[te|md]_mknonnuma and remaining page table manipulations
With PROT_NONE, the traditional page table manipulation functions are
sufficient.

[andre.przywara@arm.com: fix compiler warning in pmdp_invalidate()]
[akpm@linux-foundation.org: fix build with STRICT_MM_TYPECHECKS]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Tested-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dave Jones <davej@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-12 18:54:08 -08:00
Linus Torvalds
42cf0f203e Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:

 - clang assembly fixes from Ard

 - optimisations and cleanups for Aurora L2 cache support

 - efficient L2 cache support for secure monitor API on Exynos SoCs

 - debug menu cleanup from Daniel Thompson to allow better behaviour for
   multiplatform kernels

 - StrongARM SA11x0 conversion to irq domains, and pxa_timer

 - kprobes updates for older ARM CPUs

 - move probes support out of arch/arm/kernel to arch/arm/probes

 - add inline asm support for the rbit (reverse bits) instruction

 - provide an ARM mode secondary CPU entry point (for Qualcomm CPUs)

 - remove the unused ARMv3 user access code

 - add driver_override support to AMBA Primecell bus

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (55 commits)
  ARM: 8256/1: driver coamba: add device binding path 'driver_override'
  ARM: 8301/1: qcom: Use secondary_startup_arm()
  ARM: 8302/1: Add a secondary_startup that assumes ARM mode
  ARM: 8300/1: teach __asmeq that r11 == fp and r12 == ip
  ARM: kprobes: Fix compilation error caused by superfluous '*'
  ARM: 8297/1: cache-l2x0: optimize aurora range operations
  ARM: 8296/1: cache-l2x0: clean up aurora cache handling
  ARM: 8284/1: sa1100: clear RCSR_SMR on resume
  ARM: 8283/1: sa1100: collie: clear PWER register on machine init
  ARM: 8282/1: sa1100: use handle_domain_irq
  ARM: 8281/1: sa1100: move GPIO-related IRQ code to gpio driver
  ARM: 8280/1: sa1100: switch to irq_domain_add_simple()
  ARM: 8279/1: sa1100: merge both GPIO irqdomains
  ARM: 8278/1: sa1100: split irq handling for low GPIOs
  ARM: 8291/1: replace magic number with PAGE_SHIFT macro in fixup_pv code
  ARM: 8290/1: decompressor: fix a wrong comment
  ARM: 8286/1: mm: Fix dma_contiguous_reserve comment
  ARM: 8248/1: pm: remove outdated comment
  ARM: 8274/1: Fix DEBUG_LL for multi-platform kernels (without PL01X)
  ARM: 8273/1: Seperate DEBUG_UART_PHYS from DEBUG_LL on EP93XX
  ...
2015-02-12 08:51:56 -08:00
Kirill A. Shutemov
b30fe6c7ce mm: fix false-positive warning on exit due mm_nr_pmds(mm)
The problem is that we check nr_ptes/nr_pmds in exit_mmap() which happens
*before* pgd_free().  And if an arch does pte/pmd allocation in
pgd_alloc() and frees them in pgd_free() we see offset in counters by the
time of the checks.

We tried to workaround this by offsetting expected counter value according
to FIRST_USER_ADDRESS for both nr_pte and nr_pmd in exit_mmap().  But it
doesn't work in some cases:

1. ARM with LPAE enabled also has non-zero USER_PGTABLES_CEILING, but
   upper addresses occupied with huge pmd entries, so the trick with
   offsetting expected counter value will get really ugly: we will have
   to apply it nr_pmds, but not nr_ptes.

2. Metag has non-zero FIRST_USER_ADDRESS, but doesn't do allocation
   pte/pmd page tables allocation in pgd_alloc(), just setup a pgd entry
   which is allocated at boot and shared accross all processes.

The proposal is to move the check to check_mm() which happens *after*
pgd_free() and do proper accounting during pgd_alloc() and pgd_free()
which would bring counters to zero if nothing leaked.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Tyler Baker <tyler.baker@linaro.org>
Tested-by: Tyler Baker <tyler.baker@linaro.org>
Tested-by: Nishanth Menon <nm@ti.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-11 17:06:04 -08:00
Kirill A. Shutemov
8aa76875dc arm: define __PAGETABLE_PMD_FOLDED for !LPAE
ARM uses custom implementation of PMD folding in 2-level page table case.
Generic code expects to see __PAGETABLE_PMD_FOLDED to be defined if PMD is
folded, but ARM doesn't do this.  Let's fix it.

Defining __PAGETABLE_PMD_FOLDED will drop out unused __pmd_alloc().  It
also fixes problems with recently-introduced pmd accounting on ARM without
LPAE.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Nishanth Menon <nm@ti.com>
Reported-by: Simon Horman <horms@verge.net.au>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Tested-by: Fabio Estevam <festevam@gmail.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-11 17:06:04 -08:00
Kirill A. Shutemov
d016bf7ece mm: make FIRST_USER_ADDRESS unsigned long on all archs
LKP has triggered a compiler warning after my recent patch "mm: account
pmd page tables to the process":

    mm/mmap.c: In function 'exit_mmap':
 >> mm/mmap.c:2857:2: warning: right shift count >= width of type [enabled by default]

The code:

 > 2857                WARN_ON(mm_nr_pmds(mm) >
   2858                                round_up(FIRST_USER_ADDRESS, PUD_SIZE) >> PUD_SHIFT);

In this, on tile, we have FIRST_USER_ADDRESS defined as 0.  round_up() has
the same type -- int.  PUD_SHIFT.

I think the best way to fix it is to define FIRST_USER_ADDRESS as unsigned
long.  On every arch for consistency.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-11 17:06:03 -08:00
Naoya Horiguchi
61f77eda9b mm/hugetlb: reduce arch dependent code around follow_huge_*
Currently we have many duplicates in definitions around
follow_huge_addr(), follow_huge_pmd(), and follow_huge_pud(), so this
patch tries to remove the m.  The basic idea is to put the default
implementation for these functions in mm/hugetlb.c as weak symbols
(regardless of CONFIG_ARCH_WANT_GENERAL_HUGETL B), and to implement
arch-specific code only when the arch needs it.

For follow_huge_addr(), only powerpc and ia64 have their own
implementation, and in all other architectures this function just returns
ERR_PTR(-EINVAL).  So this patch sets returning ERR_PTR(-EINVAL) as
default.

As for follow_huge_(pmd|pud)(), if (pmd|pud)_huge() is implemented to
always return 0 in your architecture (like in ia64 or sparc,) it's never
called (the callsite is optimized away) no matter how implemented it is.
So in such architectures, we don't need arch-specific implementation.

In some architecture (like mips, s390 and tile,) their current
arch-specific follow_huge_(pmd|pud)() are effectively identical with the
common code, so this patch lets these architecture use the common code.

One exception is metag, where pmd_huge() could return non-zero but it
expects follow_huge_pmd() to always return NULL.  This means that we need
arch-specific implementation which returns NULL.  This behavior looks
strange to me (because non-zero pmd_huge() implies that the architecture
supports PMD-based hugepage, so follow_huge_pmd() can/should return some
relevant value,) but that's beyond this cleanup patch, so let's keep it.

Justification of non-trivial changes:
- in s390, follow_huge_pmd() checks !MACHINE_HAS_HPAGE at first, and this
  patch removes the check. This is OK because we can assume MACHINE_HAS_HPAGE
  is true when follow_huge_pmd() can be called (note that pmd_huge() has
  the same check and always returns 0 for !MACHINE_HAS_HPAGE.)
- in s390 and mips, we use HPAGE_MASK instead of PMD_MASK as done in common
  code. This patch forces these archs use PMD_MASK, but it's OK because
  they are identical in both archs.
  In s390, both of HPAGE_SHIFT and PMD_SHIFT are 20.
  In mips, HPAGE_SHIFT is defined as (PAGE_SHIFT + PAGE_SHIFT - 3) and
  PMD_SHIFT is define as (PAGE_SHIFT + PAGE_SHIFT + PTE_ORDER - 3), but
  PTE_ORDER is always 0, so these are identical.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-11 17:06:01 -08:00
Linus Torvalds
aa7ed01f93 MMC core:
- Support for MMC power sequences.
 - SDIO function devicetree subnode parsing.
 - Refactor the hardware reset routines and enable it for SD cards.
 - Various code quality improvements, especially for slot-gpio.
 
 MMC host:
 - dw_mmc: Various fixes and cleanups.
 - dw_mmc: Convert to mmc_send_tuning().
 - moxart: Fix probe logic.
 - sdhci: Various fixes and cleanups
 - sdhci: Asynchronous request handling support.
 - sdhci-pxav3: Various fixes and cleanups.
 - sdhci-tegra: Fixes for T114, T124 and T132.
 - rtsx: Various fixes and cleanups.
 - rtsx: Support for SDIO.
 - sdhi/tmio: Refactor and cleanup of header files.
 - omap_hsmmc: Use slot-gpio and common MMC DT parser.
 - Make all hosts to deal with errors from mmc_of_parse().
 - sunxi: Various fixes and cleanups.
 - sdhci: Support for Fujitsu SDHCI controller f_sdh30.
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Merge tag 'mmc-v3.20-1' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Support for MMC power sequences.
   - SDIO function devicetree subnode parsing.
   - Refactor the hardware reset routines and enable it for SD cards.
   - Various code quality improvements, especially for slot-gpio.

  MMC host:
   - dw_mmc: Various fixes and cleanups.
   - dw_mmc: Convert to mmc_send_tuning().
   - moxart: Fix probe logic.
   - sdhci: Various fixes and cleanups
   - sdhci: Asynchronous request handling support.
   - sdhci-pxav3: Various fixes and cleanups.
   - sdhci-tegra: Fixes for T114, T124 and T132.
   - rtsx: Various fixes and cleanups.
   - rtsx: Support for SDIO.
   - sdhi/tmio: Refactor and cleanup of header files.
   - omap_hsmmc: Use slot-gpio and common MMC DT parser.
   - Make all hosts to deal with errors from mmc_of_parse().
   - sunxi: Various fixes and cleanups.
   - sdhci: Support for Fujitsu SDHCI controller f_sdh30"

* tag 'mmc-v3.20-1' of git://git.linaro.org/people/ulf.hansson/mmc: (117 commits)
  mmc: sdhci-s3c: solve problem with sleeping in atomic context
  mmc: pwrseq: add driver for emmc hardware reset
  mmc: moxart: fix probe logic
  mmc: core: Invoke mmc_pwrseq_post_power_on() prior MMC_POWER_ON state
  mmc: pwrseq_simple: Add optional reference clock support
  mmc: pwrseq: Document optional clock for the simple power sequence
  mmc: pwrseq_simple: Extend to support more pins
  mmc: pwrseq: Document that simple sequence support more than one GPIO
  mmc: Add hardware dependencies for sdhci-pxav3 and sdhci-pxav2
  mmc: sdhci-pxav3: Modify clock settings for the SDR50 and DDR50 modes
  mmc: sdhci-pxav3: Extend binding with SDIO3 conf reg for the Armada 38x
  mmc: sdhci-pxav3: Fix Armada 38x controller's caps according to erratum ERR-7878951
  mmc: sdhci-pxav3: Fix SDR50 and DDR50 capabilities for the Armada 38x flavor
  mmc: sdhci: switch voltage before sdhci_set_ios in runtime resume
  mmc: tegra: Write xfer_mode, CMD regs in together
  mmc: Resolve BKOPS compatability issue
  mmc: sdhci-pxav3: fix setting of pdata->clk_delay_cycles
  mmc: dw_mmc: rockchip: remove incorrect __exit_p()
  mmc: dw_mmc: exynos: remove incorrect __exit_p()
  mmc: Fix menuconfig alignment of MMC_SDHCI_* options
  ...
2015-02-11 10:56:48 -08:00
Linus Torvalds
718749d562 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
 "The first round of updates for the input subsystem.

  A few new drivers (power button handler for AXP20x PMIC, tps65218
  power button driver, sun4i keys driver, regulator haptic driver, NI
  Ettus Research USRP E3x0 button, Alwinner A10/A20 PS/2 controller).

  Updates to Synaptics and ALPS touchpad drivers (with more to come
  later), brand new Focaltech PS/2 support, update to Cypress driver to
  handle Gen5 (in addition to Gen3) devices, and number of other fixups
  to various drivers as well as input core"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (54 commits)
  Input: elan_i2c - fix wrong %p extension
  Input: evdev - do not queue SYN_DROPPED if queue is empty
  Input: gscps2 - fix MODULE_DEVICE_TABLE invocation
  Input: synaptics - use dmax in input_mt_assign_slots
  Input: pxa27x_keypad - remove unnecessary ARM includes
  Input: ti_am335x_tsc - replace delta filtering with median filtering
  ARM: dts: AM335x: Make charge delay a DT parameter for TSC
  Input: ti_am335x_tsc - read charge delay from DT
  Input: ti_am335x_tsc - remove udelay in interrupt handler
  Input: ti_am335x_tsc - interchange touchscreen and ADC steps
  Input: MT - add support for balanced slot assignment
  Input: drv2667 - remove wrong and unneeded drv2667-haptics modalias
  Input: drv260x - remove wrong and unneeded drv260x-haptics modalias
  Input: cap11xx - remove wrong and unneeded cap11xx modalias
  Input: sun4i-ts - add support for touchpanel controller on A31
  Input: serio - add support for Alwinner A10/A20 PS/2 controller
  Input: gtco - use sign_extend32() for sign extension
  Input: elan_i2c - verify firmware signature applying it
  Input: elantech - remove stale comment from Kconfig
  Input: cyapa - off by one in cyapa_update_fw_store()
  ...
2015-02-11 09:32:08 -08:00
Linus Torvalds
a323ae93a7 sound updates for 3.20-rc1
In this batch, you can find lots of cleanups through the whole
 subsystem, as our good New Year's resolution.  Lots of LOCs and
 commits are about LINE6 driver that was promoted finally from staging
 tree, and as usual, there've been widely spread ASoC changes.
 
 Here some highlights:
 
 ALSA core changes
   - Embedding struct device into ALSA core structures
   - sequencer core cleanups / fixes
   - PCM msbits constraints cleanups / fixes
   - New SNDRV_PCM_TRIGGER_DRAIN command
   - PCM kerneldoc fixes, header cleanups
   - PCM code cleanups using more standard codes
   - Control notification ID fixes
 
 Driver cleanups
   - Cleanups of PCI PM callbacks
   - Timer helper usages cleanups
   - Simplification (e.g. argument reduction) of many driver codes
 
 HD-audio
   - Hotkey and LED support on HP laptops with Realtek codecs
   - Dock station support on HP laptops
   - Toshiba Satellite S50D fixup
   - Enhanced wallclock timestamp handling for HD-audio
   - Componentization to simplify the linkage between i915 and hd-audio
     drivers for Intel HDMI/DP
 
 USB-audio
   - Akai MPC Element support
   - Enhanced timestamp handling
 
 ASoC
   - Lots of refactoringin ASoC core, moving drivers to more data
     driven initialization and rationalizing a lot of DAPM usage
   - Much improved handling of CDCLK clocks on Samsung I2S controllers
   - Lots of driver specific cleanups and feature improvements
   - CODEC support for TI PCM514x and TLV320AIC3104 devices
   - Board support for Tegra systems with Realtek RT5677
   - New driver for Maxim max98357a
   - More enhancements / fixes for Intel SST driver
 
 Others
   - Promotion of LINE6 driver from staging along with lots of rewrites
     and cleanups
   - DT support for old non-ASoC atmel driver
   - oxygen cleanups, XIO2001 init, Studio Evolution SE6x support
   - Emu8000 DRAM size detection fix on ISA(!!) AWE64 boards
   - A few more ak411x fixes for ice1724 boards
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Merge tag 'sound-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "In this batch, you can find lots of cleanups through the whole
  subsystem, as our good New Year's resolution.  Lots of LOCs and
  commits are about LINE6 driver that was promoted finally from staging
  tree, and as usual, there've been widely spread ASoC changes.

  Here some highlights:

  ALSA core changes
   - Embedding struct device into ALSA core structures
   - sequencer core cleanups / fixes
   - PCM msbits constraints cleanups / fixes
   - New SNDRV_PCM_TRIGGER_DRAIN command
   - PCM kerneldoc fixes, header cleanups
   - PCM code cleanups using more standard codes
   - Control notification ID fixes

  Driver cleanups
   - Cleanups of PCI PM callbacks
   - Timer helper usages cleanups
   - Simplification (e.g. argument reduction) of many driver codes

  HD-audio
   - Hotkey and LED support on HP laptops with Realtek codecs
   - Dock station support on HP laptops
   - Toshiba Satellite S50D fixup
   - Enhanced wallclock timestamp handling for HD-audio
   - Componentization to simplify the linkage between i915 and hd-audio
     drivers for Intel HDMI/DP

  USB-audio
   - Akai MPC Element support
   - Enhanced timestamp handling

  ASoC
   - Lots of refactoringin ASoC core, moving drivers to more data driven
     initialization and rationalizing a lot of DAPM usage
   - Much improved handling of CDCLK clocks on Samsung I2S controllers
   - Lots of driver specific cleanups and feature improvements
   - CODEC support for TI PCM514x and TLV320AIC3104 devices
   - Board support for Tegra systems with Realtek RT5677
   - New driver for Maxim max98357a
   - More enhancements / fixes for Intel SST driver

  Others
   - Promotion of LINE6 driver from staging along with lots of rewrites
     and cleanups
   - DT support for old non-ASoC atmel driver
   - oxygen cleanups, XIO2001 init, Studio Evolution SE6x support
   - Emu8000 DRAM size detection fix on ISA(!!) AWE64 boards
   - A few more ak411x fixes for ice1724 boards"

* tag 'sound-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (542 commits)
  ALSA: line6: toneport: Use explicit type for firmware version
  ALSA: line6: Use explicit type for serial number
  ALSA: line6: Return EIO if read/write not successful
  ALSA: line6: Return error if device not responding
  ALSA: line6: Add delay before reading status
  ASoC: Intel: Clean data after SST fw fetch
  ALSA: hda - Add docking station support for another HP machine
  ALSA: control: fix failure to return new numerical ID in 'replace' event data
  ALSA: usb: update trigger timestamp on first non-zero URB submitted
  ALSA: hda: read trigger_timestamp immediately after starting DMA
  ALSA: pcm: allow for trigger_tstamp snapshot in .trigger
  ALSA: pcm: don't override timestamp unconditionally
  ALSA: off by one bug in snd_riptide_joystick_probe()
  ASoC: rt5670: Set use_single_rw flag for regmap
  ASoC: rt286: Add rt288 codec support
  ASoC: max98357a: Fix build in !CONFIG_OF case
  ASoC: Intel: fix platform_no_drv_owner.cocci warnings
  ARM: dts: Switch Odroid X2/U2 to simple-audio-card
  ARM: dts: Exynos4 and Odroid X2/U3 sound device nodes update
  ALSA: control: fix failure to return numerical ID in 'add' event
  ...
2015-02-11 08:51:59 -08:00
Linus Torvalds
c5ce28df0e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:

 1) More iov_iter conversion work from Al Viro.

    [ The "crypto: switch af_alg_make_sg() to iov_iter" commit was
      wrong, and this pull actually adds an extra commit on top of the
      branch I'm pulling to fix that up, so that the pre-merge state is
      ok.   - Linus ]

 2) Various optimizations to the ipv4 forwarding information base trie
    lookup implementation.  From Alexander Duyck.

 3) Remove sock_iocb altogether, from CHristoph Hellwig.

 4) Allow congestion control algorithm selection via routing metrics.
    From Daniel Borkmann.

 5) Make ipv4 uncached route list per-cpu, from Eric Dumazet.

 6) Handle rfs hash collisions more gracefully, also from Eric Dumazet.

 7) Add xmit_more support to r8169, e1000, and e1000e drivers.  From
    Florian Westphal.

 8) Transparent Ethernet Bridging support for GRO, from Jesse Gross.

 9) Add BPF packet actions to packet scheduler, from Jiri Pirko.

10) Add support for uniqu flow IDs to openvswitch, from Joe Stringer.

11) New NetCP ethernet driver, from Muralidharan Karicheri and Wingman
    Kwok.

12) More sanely handle out-of-window dupacks, which can result in
    serious ACK storms.  From Neal Cardwell.

13) Various rhashtable bug fixes and enhancements, from Herbert Xu,
    Patrick McHardy, and Thomas Graf.

14) Support xmit_more in be2net, from Sathya Perla.

15) Group Policy extensions for vxlan, from Thomas Graf.

16) Remove Checksum Offload support for vxlan, from Tom Herbert.

17) Like ipv4, support lockless transmit over ipv6 UDP sockets.  From
    Vlad Yasevich.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1494+1 commits)
  crypto: fix af_alg_make_sg() conversion to iov_iter
  ipv4: Namespecify TCP PMTU mechanism
  i40e: Fix for stats init function call in Rx setup
  tcp: don't include Fast Open option in SYN-ACK on pure SYN-data
  openvswitch: Only set TUNNEL_VXLAN_OPT if VXLAN-GBP metadata is set
  ipv6: Make __ipv6_select_ident static
  ipv6: Fix fragment id assignment on LE arches.
  bridge: Fix inability to add non-vlan fdb entry
  net: Mellanox: Delete unnecessary checks before the function call "vunmap"
  cxgb4: Add support in cxgb4 to get expansion rom version via ethtool
  ethtool: rename reserved1 memeber in ethtool_drvinfo for expansion ROM version
  net: dsa: Remove redundant phy_attach()
  IB/mlx4: Reset flow support for IB kernel ULPs
  IB/mlx4: Always use the correct port for mirrored multicast attachments
  net/bonding: Fix potential bad memory access during bonding events
  tipc: remove tipc_snprintf
  tipc: nl compat add noop and remove legacy nl framework
  tipc: convert legacy nl stats show to nl compat
  tipc: convert legacy nl net id get to nl compat
  tipc: convert legacy nl net id set to nl compat
  ...
2015-02-10 20:01:30 -08:00
Linus Torvalds
29afc4e9a4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree changes from Jiri Kosina:
 "Patches from trivial.git that keep the world turning around.

  Mostly documentation and comment fixes, and a two corner-case code
  fixes from Alan Cox"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
  kexec, Kconfig: spell "architecture" properly
  mm: fix cleancache debugfs directory path
  blackfin: mach-common: ints-priority: remove unused function
  doubletalk: probe failure causes OOPS
  ARM: cache-l2x0.c: Make it clear that cache-l2x0 handles L310 cache controller
  msdos_fs.h: fix 'fields' in comment
  scsi: aic7xxx: fix comment
  ARM: l2c: fix comment
  ibmraid: fix writeable attribute with no store method
  dynamic_debug: fix comment
  doc: usbmon: fix spelling s/unpriviledged/unprivileged/
  x86: init_mem_mapping(): use capital BIOS in comment
2015-02-10 18:57:15 -08:00
Linus Torvalds
992de5a8ec Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
 "Bite-sized chunks this time, to avoid the MTA ratelimiting woes.

   - fs/notify updates

   - ocfs2

   - some of MM"

That laconic "some MM" is mainly the removal of remap_file_pages(),
which is a big simplification of the VM, and which gets rid of a *lot*
of random cruft and special cases because we no longer support the
non-linear mappings that it used.

From a user interface perspective, nothing has changed, because the
remap_file_pages() syscall still exists, it's just done by emulating the
old behavior by creating a lot of individual small mappings instead of
one non-linear one.

The emulation is slower than the old "native" non-linear mappings, but
nobody really uses or cares about remap_file_pages(), and simplifying
the VM is a big advantage.

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits)
  memcg: zap memcg_slab_caches and memcg_slab_mutex
  memcg: zap memcg_name argument of memcg_create_kmem_cache
  memcg: zap __memcg_{charge,uncharge}_slab
  mm/page_alloc.c: place zone_id check before VM_BUG_ON_PAGE check
  mm: hugetlb: fix type of hugetlb_treat_as_movable variable
  mm, hugetlb: remove unnecessary lower bound on sysctl handlers"?
  mm: memory: merge shared-writable dirtying branches in do_wp_page()
  mm: memory: remove ->vm_file check on shared writable vmas
  xtensa: drop _PAGE_FILE and pte_file()-related helpers
  x86: drop _PAGE_FILE and pte_file()-related helpers
  unicore32: drop pte_file()-related helpers
  um: drop _PAGE_FILE and pte_file()-related helpers
  tile: drop pte_file()-related helpers
  sparc: drop pte_file()-related helpers
  sh: drop _PAGE_FILE and pte_file()-related helpers
  score: drop _PAGE_FILE and pte_file()-related helpers
  s390: drop pte_file()-related helpers
  parisc: drop _PAGE_FILE and pte_file()-related helpers
  openrisc: drop _PAGE_FILE and pte_file()-related helpers
  nios2: drop _PAGE_FILE and pte_file()-related helpers
  ...
2015-02-10 16:45:56 -08:00
Linus Torvalds
872912352c ACPI and power management updates for v3.20-rc1
- Rework of the core ACPI resources parsing code to fix issues
    in it and make using resource offsets more convenient and
    consolidation of some resource-handing code in a couple of places
    that have grown analagous data structures and code to cover the
    the same gap in the core (Jiang Liu, Thomas Gleixner, Lv Zheng).
 
  - ACPI-based IOAPIC hotplug support on top of the resources handling
    rework (Jiang Liu, Yinghai Lu).
 
  - ACPICA update to upstream release 20150204 including an interrupt
    handling rework that allows drivers to install raw handlers for
    ACPI GPEs which then become entirely responsible for the given GPE
    and the ACPICA core code won't touch it (Lv Zheng, David E Box,
    Octavian Purdila).
 
  - ACPI EC driver rework to fix several concurrency issues and other
    problems related to events handling on top of the ACPICA's new
    support for raw GPE handlers (Lv Zheng).
 
  - New ACPI driver for AMD SoCs analogous to the LPSS (Low-Power
    Subsystem) driver for Intel chips (Ken Xue).
 
  - Two minor fixes of the ACPI LPSS driver (Heikki Krogerus,
    Jarkko Nikula).
 
  - Two new blacklist entries for machines (Samsung 730U3E/740U3E and
    510R) where the native backlight interface doesn't work correctly
    while the ACPI one does (Hans de Goede).
 
  - Rework of the ACPI processor driver's handling of idle states
    to make the code more straightforward and less bloated overall
    (Rafael J Wysocki).
 
  - Assorted minor fixes related to ACPI and SFI (Andreas Ruprecht,
    Andy Shevchenko, Hanjun Guo, Jan Beulich, Rafael J Wysocki,
    Yaowei Bai).
 
  - PCI core power management modification to avoid resuming (some)
    runtime-suspended devices during system suspend if they are in
    the right states already (Rafael J Wysocki).
 
  - New SFI-based cpufreq driver for Intel platforms using SFI
    (Srinidhi Kasagar).
 
  - cpufreq core fixes, cleanups and simplifications (Viresh Kumar,
    Doug Anderson, Wolfram Sang).
 
  - SkyLake CPU support and other updates for the intel_pstate driver
    (Kristen Carlson Accardi, Srinivas Pandruvada).
 
  - cpufreq-dt driver cleanup (Markus Elfring).
 
  - Init fix for the ARM big.LITTLE cpuidle driver (Sudeep Holla).
 
  - Generic power domains core code fixes and cleanups (Ulf Hansson).
 
  - Operating Performance Points (OPP) core code cleanups and kernel
    documentation update (Nishanth Menon).
 
  - New dabugfs interface to make the list of PM QoS constraints
    available to user space (Nishanth Menon).
 
  - New devfreq driver for Tegra Activity Monitor (Tomeu Vizoso).
 
  - New devfreq class (devfreq_event) to provide raw utilization data
    to devfreq governors (Chanwoo Choi).
 
  - Assorted minor fixes and cleanups related to power management
    (Andreas Ruprecht, Krzysztof Kozlowski, Rickard Strandqvist,
    Pavel Machek, Todd E Brandt, Wonhong Kwon).
 
  - turbostat updates (Len Brown) and cpupower Makefile improvement
    (Sriram Raghunathan).
 
 /
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Merge tag 'pm+acpi-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management updates from Rafael Wysocki:
 "We have a few new features this time, including a new SFI-based
  cpufreq driver, a new devfreq driver for Tegra Activity Monitor, a new
  devfreq class for providing its governors with raw utilization data
  and a new ACPI driver for AMD SoCs.

  Still, the majority of changes here are reworks of existing code to
  make it more straightforward or to prepare it for implementing new
  features on top of it.  The primary example is the rework of ACPI
  resources handling from Jiang Liu, Thomas Gleixner and Lv Zheng with
  support for IOAPIC hotplug implemented on top of it, but there is
  quite a number of changes of this kind in the cpufreq core, ACPICA,
  ACPI EC driver, ACPI processor driver and the generic power domains
  core code too.

  The most active developer is Viresh Kumar with his cpufreq changes.

  Specifics:

   - Rework of the core ACPI resources parsing code to fix issues in it
     and make using resource offsets more convenient and consolidation
     of some resource-handing code in a couple of places that have grown
     analagous data structures and code to cover the the same gap in the
     core (Jiang Liu, Thomas Gleixner, Lv Zheng).

   - ACPI-based IOAPIC hotplug support on top of the resources handling
     rework (Jiang Liu, Yinghai Lu).

   - ACPICA update to upstream release 20150204 including an interrupt
     handling rework that allows drivers to install raw handlers for
     ACPI GPEs which then become entirely responsible for the given GPE
     and the ACPICA core code won't touch it (Lv Zheng, David E Box,
     Octavian Purdila).

   - ACPI EC driver rework to fix several concurrency issues and other
     problems related to events handling on top of the ACPICA's new
     support for raw GPE handlers (Lv Zheng).

   - New ACPI driver for AMD SoCs analogous to the LPSS (Low-Power
     Subsystem) driver for Intel chips (Ken Xue).

   - Two minor fixes of the ACPI LPSS driver (Heikki Krogerus, Jarkko
     Nikula).

   - Two new blacklist entries for machines (Samsung 730U3E/740U3E and
     510R) where the native backlight interface doesn't work correctly
     while the ACPI one does (Hans de Goede).

   - Rework of the ACPI processor driver's handling of idle states to
     make the code more straightforward and less bloated overall (Rafael
     J Wysocki).

   - Assorted minor fixes related to ACPI and SFI (Andreas Ruprecht,
     Andy Shevchenko, Hanjun Guo, Jan Beulich, Rafael J Wysocki, Yaowei
     Bai).

   - PCI core power management modification to avoid resuming (some)
     runtime-suspended devices during system suspend if they are in the
     right states already (Rafael J Wysocki).

   - New SFI-based cpufreq driver for Intel platforms using SFI
     (Srinidhi Kasagar).

   - cpufreq core fixes, cleanups and simplifications (Viresh Kumar,
     Doug Anderson, Wolfram Sang).

   - SkyLake CPU support and other updates for the intel_pstate driver
     (Kristen Carlson Accardi, Srinivas Pandruvada).

   - cpufreq-dt driver cleanup (Markus Elfring).

   - Init fix for the ARM big.LITTLE cpuidle driver (Sudeep Holla).

   - Generic power domains core code fixes and cleanups (Ulf Hansson).

   - Operating Performance Points (OPP) core code cleanups and kernel
     documentation update (Nishanth Menon).

   - New dabugfs interface to make the list of PM QoS constraints
     available to user space (Nishanth Menon).

   - New devfreq driver for Tegra Activity Monitor (Tomeu Vizoso).

   - New devfreq class (devfreq_event) to provide raw utilization data
     to devfreq governors (Chanwoo Choi).

   - Assorted minor fixes and cleanups related to power management
     (Andreas Ruprecht, Krzysztof Kozlowski, Rickard Strandqvist, Pavel
     Machek, Todd E Brandt, Wonhong Kwon).

   - turbostat updates (Len Brown) and cpupower Makefile improvement
     (Sriram Raghunathan)"

* tag 'pm+acpi-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (151 commits)
  tools/power turbostat: relax dependency on APERF_MSR
  tools/power turbostat: relax dependency on invariant TSC
  Merge branch 'pci/host-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci into acpi-resources
  tools/power turbostat: decode MSR_*_PERF_LIMIT_REASONS
  tools/power turbostat: relax dependency on root permission
  ACPI / video: Add disable_native_backlight quirk for Samsung 510R
  ACPI / PM: Remove unneeded nested #ifdef
  USB / PM: Remove unneeded #ifdef and associated dead code
  intel_pstate: provide option to only use intel_pstate with HWP
  ACPI / EC: Add GPE reference counting debugging messages
  ACPI / EC: Add query flushing support
  ACPI / EC: Refine command storm prevention support
  ACPI / EC: Add command flushing support.
  ACPI / EC: Introduce STARTED/STOPPED flags to replace BLOCKED flag
  ACPI: add AMD ACPI2Platform device support for x86 system
  ACPI / table: remove duplicate NULL check for the handler of acpi_table_parse()
  ACPI / EC: Update revision due to raw handler mode.
  ACPI / EC: Reduce ec_poll() by referencing the last register access timestamp.
  ACPI / EC: Fix several GPE handling issues by deploying ACPI_GPE_DISPATCH_RAW_HANDLER mode.
  ACPICA: Events: Enable APIs to allow interrupt/polling adaptive request based GPE handling model
  ...
2015-02-10 15:09:41 -08:00
Linus Torvalds
c08f846793 PCI changes for the v3.20 merge window:
Enumeration
     - Move domain assignment from arm64 to generic code (Lorenzo Pieralisi)
     - ARM: Remove artificial dependency on pci_sys_data domain (Lorenzo Pieralisi)
     - ARM: Move to generic PCI domains (Lorenzo Pieralisi)
     - Generate uppercase hex for modalias var in uevent (Ricardo Ribalda Delgado)
     - Add and use generic config accessors on ARM, PowerPC (Rob Herring)
 
   Resource management
     - Free resources on failure in of_pci_get_host_bridge_resources() (Lorenzo Pieralisi)
     - Fix infinite loop with ROM image of size 0 (Michel Dänzer)
 
   PCI device hotplug
     - Handle surprise add even if surprise removal isn't supported (Bjorn Helgaas)
 
   Virtualization
     - Mark AMD/ATI VGA devices that don't reset on D3hot->D0 transition (Alex Williamson)
     - Add DMA alias quirk for Adaptec 3405 (Alex Williamson)
     - Add Wellsburg (X99) to Intel PCH root port ACS quirk (Alex Williamson)
     - Add ACS quirk for Emulex NICs (Vasundhara Volam)
 
   MSI
     - Fail MSI-X mappings if there's no space assigned to MSI-X BAR (Yijing Wang)
 
   Freescale Layerscape host bridge driver
     - Fix platform_no_drv_owner.cocci warnings (Julia Lawall)
 
   NVIDIA Tegra host bridge driver
     - Remove unnecessary tegra_pcie_fixup_bridge() (Lucas Stach)
 
   Renesas R-Car host bridge driver
     - Fix error handling of irq_of_parse_and_map() (Dmitry Torokhov)
 
   TI Keystone host bridge driver
     - Fix error handling of irq_of_parse_and_map() (Dmitry Torokhov)
     - Fix misspelling of current function in debug output (Julia Lawall)
 
   Xilinx AXI host bridge driver
     - Fix harmless format string warning (Arnd Bergmann)
 
   Miscellaneous
     - Use standard parsing functions for ASPM sysfs setters (Chris J Arges)
     - Add pci_device_to_OF_node() stub for !CONFIG_OF (Kevin Hao)
     - Delete unnecessary NULL pointer checks (Markus Elfring)
     - Add and use defines for PCIe Max_Read_Request_Size (Rafał Miłecki)
     - Include clk.h instead of clk-private.h (Stephen Boyd)
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Merge tag 'pci-v3.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "Enumeration
    - Move domain assignment from arm64 to generic code (Lorenzo Pieralisi)
    - ARM: Remove artificial dependency on pci_sys_data domain (Lorenzo Pieralisi)
    - ARM: Move to generic PCI domains (Lorenzo Pieralisi)
    - Generate uppercase hex for modalias var in uevent (Ricardo Ribalda Delgado)
    - Add and use generic config accessors on ARM, PowerPC (Rob Herring)

  Resource management
    - Free resources on failure in of_pci_get_host_bridge_resources() (Lorenzo Pieralisi)
    - Fix infinite loop with ROM image of size 0 (Michel Dänzer)

  PCI device hotplug
    - Handle surprise add even if surprise removal isn't supported (Bjorn Helgaas)

  Virtualization
    - Mark AMD/ATI VGA devices that don't reset on D3hot->D0 transition (Alex Williamson)
    - Add DMA alias quirk for Adaptec 3405 (Alex Williamson)
    - Add Wellsburg (X99) to Intel PCH root port ACS quirk (Alex Williamson)
    - Add ACS quirk for Emulex NICs (Vasundhara Volam)

  MSI
    - Fail MSI-X mappings if there's no space assigned to MSI-X BAR (Yijing Wang)

  Freescale Layerscape host bridge driver
    - Fix platform_no_drv_owner.cocci warnings (Julia Lawall)

  NVIDIA Tegra host bridge driver
    - Remove unnecessary tegra_pcie_fixup_bridge() (Lucas Stach)

  Renesas R-Car host bridge driver
    - Fix error handling of irq_of_parse_and_map() (Dmitry Torokhov)

  TI Keystone host bridge driver
    - Fix error handling of irq_of_parse_and_map() (Dmitry Torokhov)
    - Fix misspelling of current function in debug output (Julia Lawall)

  Xilinx AXI host bridge driver
    - Fix harmless format string warning (Arnd Bergmann)

  Miscellaneous
    - Use standard parsing functions for ASPM sysfs setters (Chris J Arges)
    - Add pci_device_to_OF_node() stub for !CONFIG_OF (Kevin Hao)
    - Delete unnecessary NULL pointer checks (Markus Elfring)
    - Add and use defines for PCIe Max_Read_Request_Size (Rafał Miłecki)
    - Include clk.h instead of clk-private.h (Stephen Boyd)"

* tag 'pci-v3.20-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (48 commits)
  PCI: Add pci_device_to_OF_node() stub for !CONFIG_OF
  PCI: xilinx: Convert to use generic config accessors
  PCI: xgene: Convert to use generic config accessors
  PCI: tegra: Convert to use generic config accessors
  PCI: rcar: Convert to use generic config accessors
  PCI: generic: Convert to use generic config accessors
  powerpc/powermac: Convert PCI to use generic config accessors
  powerpc/fsl_pci: Convert PCI to use generic config accessors
  ARM: ks8695: Convert PCI to use generic config accessors
  ARM: sa1100: Convert PCI to use generic config accessors
  ARM: integrator: Convert PCI to use generic config accessors
  PCI: versatile: Add DT-based ARM Versatile PB PCIe host driver
  ARM: dts: versatile: add PCI controller binding
  of/pci: Free resources on failure in of_pci_get_host_bridge_resources()
  PCI: versatile: Add DT docs for ARM Versatile PB PCIe driver
  PCI: Fail MSI-X mappings if there's no space assigned to MSI-X BAR
  r8169: use PCI define for Max_Read_Request_Size
  [SCSI] esas2r: use PCI define for Max_Read_Request_Size
  tile: use PCI define for Max_Read_Request_Size
  rapidio/tsi721: use PCI define for Max_Read_Request_Size
  ...
2015-02-10 14:31:28 -08:00
Kirill A. Shutemov
b007ea798f arm: drop L_PTE_FILE and pte_file()-related helpers
We've replaced remap_file_pages(2) implementation with emulation.  Nobody
creates non-linear mapping anymore.

This patch also adjust __SWP_TYPE_SHIFT, effectively increase size of
possible swap file to 128G.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-10 14:30:31 -08:00
Linus Torvalds
bdccc4edeb xen: features and fixes for 3.20-rc0
- Reworked handling for foreign (grant mapped) pages to simplify the
   code, enable a number of additional use cases and fix a number of
   long-standing bugs.
 - Prefer the TSC over the Xen PV clock when dom0 (and the TSC is
   stable).
 - Assorted other cleanup and minor bug fixes.
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Merge tag 'stable/for-linus-3.20-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen features and fixes from David Vrabel:

 - Reworked handling for foreign (grant mapped) pages to simplify the
   code, enable a number of additional use cases and fix a number of
   long-standing bugs.

 - Prefer the TSC over the Xen PV clock when dom0 (and the TSC is
   stable).

 - Assorted other cleanup and minor bug fixes.

* tag 'stable/for-linus-3.20-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (25 commits)
  xen/manage: Fix USB interaction issues when resuming
  xenbus: Add proper handling of XS_ERROR from Xenbus for transactions.
  xen/gntdev: provide find_special_page VMA operation
  xen/gntdev: mark userspace PTEs as special on x86 PV guests
  xen-blkback: safely unmap grants in case they are still in use
  xen/gntdev: safely unmap grants in case they are still in use
  xen/gntdev: convert priv->lock to a mutex
  xen/grant-table: add a mechanism to safely unmap pages that are in use
  xen-netback: use foreign page information from the pages themselves
  xen: mark grant mapped pages as foreign
  xen/grant-table: add helpers for allocating pages
  x86/xen: require ballooned pages for grant maps
  xen: remove scratch frames for ballooned pages and m2p override
  xen/grant-table: pre-populate kernel unmap ops for xen_gnttab_unmap_refs()
  mm: add 'foreign' alias for the 'pinned' page flag
  mm: provide a find_special_page vma operation
  x86/xen: cleanup arch/x86/xen/mmu.c
  x86/xen: add some __init annotations in arch/x86/xen/mmu.c
  x86/xen: add some __init and static annotations in arch/x86/xen/setup.c
  x86/xen: use correct types for addresses in arch/x86/xen/setup.c
  ...
2015-02-10 13:56:56 -08:00
Rafael J. Wysocki
8fbcf5ecb3 Merge branch 'acpi-resources'
* acpi-resources: (23 commits)
  Merge branch 'pci/host-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci into acpi-resources
  x86/irq, ACPI: Implement ACPI driver to support IOAPIC hotplug
  ACPI: Add interfaces to parse IOAPIC ID for IOAPIC hotplug
  x86/PCI: Refine the way to release PCI IRQ resources
  x86/PCI/ACPI: Use common ACPI resource interfaces to simplify implementation
  x86/PCI: Fix the range check for IO resources
  PCI: Use common resource list management code instead of private implementation
  resources: Move struct resource_list_entry from ACPI into resource core
  ACPI: Introduce helper function acpi_dev_filter_resource_type()
  ACPI: Add field offset to struct resource_list_entry
  ACPI: Translate resource into master side address for bridge window resources
  ACPI: Return translation offset when parsing ACPI address space resources
  ACPI: Enforce stricter checks for address space descriptors
  ACPI: Set flag IORESOURCE_UNSET for unassigned resources
  ACPI: Normalize return value of resource parser functions
  ACPI: Fix a bug in parsing ACPI Memory24 resource
  ACPI: Add prefetch decoding to the address space parser
  ACPI: Move the window flag logic to the combined parser
  ACPI: Unify the parsing of address_space and ext_address_space
  ACPI: Let the parser return false for disabled resources
  ...
2015-02-10 16:05:16 +01:00
Russell King
df9ab9771c Merge branch 'devel-stable' into for-next 2015-02-10 10:26:38 +00:00
Russell King
ed8f8ce38d Merge branches 'debug', 'fixes', 'l2c' (early part), 'misc' and 'sa1100' into for-next 2015-02-10 10:26:27 +00:00
Stephen Boyd
8684014d71 ARM: 8301/1: qcom: Use secondary_startup_arm()
On qcom platforms we always enter the kernel in ARM mode,
regardless of the kernel being compiled for THUMB mode. Use
secondary_startup_arm() to properly switch the mode to what the
kernel expects if required.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-02-10 10:23:14 +00:00
Stephen Boyd
bafe586583 ARM: 8302/1: Add a secondary_startup that assumes ARM mode
Some platforms always enter the kernel in ARM mode even if the
kernel is compiled for THUMB2. Add a small wrapper on top of
secondary_startup() that switches into THUMB2 mode.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-02-10 10:23:13 +00:00
Ard Biesheuvel
ada63d4074 ARM: 8300/1: teach __asmeq that r11 == fp and r12 == ip
The __asmeq macro is used inside inline asm statements to ensure that
register asm variables that explicitly specify a register are mapped
correctly onto those registers when used in inline asm input and output
constraints. However, the string based matching fails to take into
account that 'fp' is often referred to as 'r11' and 'ip' is often
referred to as 'r12', (e.g., by clang), causing false negatives.

Fix this by making __asmeq consider the ("fp","r11"), ("r11","fp"),
("ip","r12") and ("r12","ip") cases specifically.

Reviewed-by: Alex Elder <elder@linaro.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-02-10 10:23:11 +00:00
Jon Medhurst
4e1c0664de ARM: kprobes: Fix compilation error caused by superfluous '*'
There is a superfluous '*' in the definition of kprobe_decode_insn_t
which on older versions of GCC (4.2.4) causes the compilation error:

In file included from arch/arm/probes/kprobes/core.c:37:
arch/arm/probes/kprobes/core.h:43: error: '[*]' not allowed in other than a declaration

Fix this by removing the unneeded character.

Reported-by: Janusz Użycki <j.uzycki@elproma.com.pl>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
2015-02-10 15:05:30 +08:00
Linus Torvalds
23e8fe2e16 Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
 "The main RCU changes in this cycle are:

   - Documentation updates.

   - Miscellaneous fixes.

   - Preemptible-RCU fixes, including fixing an old bug in the
     interaction of RCU priority boosting and CPU hotplug.

   - SRCU updates.

   - RCU CPU stall-warning updates.

   - RCU torture-test updates"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
  rcu: Initialize tiny RCU stall-warning timeouts at boot
  rcu: Fix RCU CPU stall detection in tiny implementation
  rcu: Add GP-kthread-starvation checks to CPU stall warnings
  rcu: Make cond_resched_rcu_qs() apply to normal RCU flavors
  rcu: Optionally run grace-period kthreads at real-time priority
  ksoftirqd: Use new cond_resched_rcu_qs() function
  ksoftirqd: Enable IRQs and call cond_resched() before poking RCU
  rcutorture: Add more diagnostics in rcu_barrier() test failure case
  torture: Flag console.log file to prevent holdovers from earlier runs
  torture: Add "-enable-kvm -soundhw pcspk" to qemu command line
  rcutorture: Handle different mpstat versions
  rcutorture: Check from beginning to end of grace period
  rcu: Remove redundant rcu_batches_completed() declaration
  rcutorture: Drop rcu_torture_completed() and friends
  rcu: Provide rcu_batches_completed_sched() for TINY_RCU
  rcutorture: Use unsigned for Reader Batch computations
  rcutorture: Make build-output parsing correctly flag RCU's warnings
  rcu: Make _batches_completed() functions return unsigned long
  rcutorture: Issue warnings on close calls due to Reader Batch blows
  documentation: Fix smp typo in memory-barriers.txt
  ...
2015-02-09 14:28:42 -08:00
Mark Brown
ddaaeee0e5 Merge remote-tracking branches 'asoc/topic/rt5670', 'asoc/topic/rt5677', 'asoc/topic/rx51', 'asoc/topic/samsung' and 'asoc/topic/sh' into asoc-next 2015-02-09 15:10:26 +08:00
Mark Brown
0cee4db21e Merge remote-tracking branches 'asoc/fix/ac97', 'asoc/fix/atmel', 'asoc/fix/intel', 'asoc/fix/rt286', 'asoc/fix/rt5640', 'asoc/fix/samsung', 'asoc/fix/sgtl5000', 'asoc/fix/sta32x', 'asoc/fix/tlv320aic3x' and 'asoc/fix/wm8731' into asoc-linus 2015-02-09 15:09:49 +08:00
Sylwester Nawrocki
16696337ca ARM: dts: Switch Odroid X2/U2 to simple-audio-card
Now when the CDCLK I2S output clock can be handled through the clock
API the Odroid X2/U3 can be switched to the simple-audio-card DT binding.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-02-09 14:18:20 +08:00
Sylwester Nawrocki
3635acef7c ARM: dts: Exynos4 and Odroid X2/U3 sound device nodes update
Clock related properties are added to the Exynos4 I2S device nodes
so they can be referred to as clock providers. Missing i2s_opclk1
clock is added to the I2S0 node and clock properties are added
to the MAX98090 codec node to allow it to control/read frequency
of the MCLK clock directly.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-02-09 14:18:20 +08:00
Linus Torvalds
2af613d373 sound fixes for 3.19
Hopefully the final pull request for 3.19: this ended up with a
 slightly higher volume than wished, but I put them all as they are
 either stable or 3.19 regression fixes.
 
 Most of commits are from ASoC, and have been stewed for a while in
 linux-next.  The only change in the common code is the regression
 fixes for ASoC AC97 stuff wrt device registrations.  The rest are
 device-specific, mostly small fixes in various ASoC drivers and
 ak411x on ice1724 boards.
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Merge tag 'sound-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Hopefully the final pull request for 3.19: this ended up with a
  slightly higher volume than wished, but I put them all as they are
  either stable or 3.19 regression fixes.

  Most of commits are from ASoC, and have been stewed for a while in
  linux-next.  The only change in the common code is the regression
  fixes for ASoC AC97 stuff wrt device registrations.  The rest are
  device-specific, mostly small fixes in various ASoC drivers and ak411x
  on ice1724 boards"

* tag 'sound-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: Intel: fix sst firmware path for cht-bsw-rt5672
  ARM: dts: Fix I2S1, I2S2 compatible for exynos4 SoCs
  ASoC: sgtl5000: add delay before first I2C access
  MAINTAINERS: ASoC: add maintainer for Intel BDW/HSW ASoC driver
  ASoC: atmel_ssc_dai: fix the setting for DSP mode
  ASoC: sgtl5000: Use shift mask when setting codec mode
  ASoC: tlv320aic3x: Fix data delay configuration
  ALSA: ak411x: Fix stall in work callback
  ASoC: Intel: Used lock version to update shim registers
  ASoC: wm8731: init mutex in i2c init path
  ASoC: atmel_ssc_dai: fix start event for I2S mode
  ASoC: rt5640: Add RT5642 ACPI ID for Intel Baytrail
  ASoC: wm97xx: Reset AC'97 device before registering it
  ASoC: Add support for allocating AC'97 device before registering it
2015-02-06 12:50:37 -08:00
Arnd Bergmann
1d88967900 ARM: 8297/1: cache-l2x0: optimize aurora range operations
The aurora_inv_range(), aurora_clean_range() and aurora_flush_range()
functions are highly redundant, both in source and in object code, and
they are harder to understand than necessary.

By moving the range loop into the aurora_pa_range() function, they
become trivial wrappers, and the object code start looking like what
one would expect for an optimal implementation.

Further optimization may be possible by using the per-CPU "virtual"
registers to avoid the spinlocks in most cases.

 (on Armada 370 RD and Armada XP GP, boot tested, plus a little bit of
 DMA traffic by reading data from a SD card)

Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-02-06 20:16:40 +00:00
Arnd Bergmann
20e783e39e ARM: 8296/1: cache-l2x0: clean up aurora cache handling
The aurora cache controller is the only remaining user of a couple
of functions in this file and are completely unused when that is
disabled, leading to build warnings:

arch/arm/mm/cache-l2x0.c:167:13: warning: 'l2x0_cache_sync' defined but not used [-Wunused-function]
arch/arm/mm/cache-l2x0.c:184:13: warning: 'l2x0_flush_all' defined but not used [-Wunused-function]
arch/arm/mm/cache-l2x0.c:194:13: warning: 'l2x0_disable' defined but not used [-Wunused-function]

With the knowledge that the code is now aurora-specific, we can
simplify it noticeably:

- The pl310 errata workarounds are not needed on aurora and can be removed
- As confirmed by Thomas Petazzoni from the data sheet, the cache_wait()
  macro is never needed.
- No need to hold the lock across atomic cache sync
- We can load the l2x0_base into a local variable across operations

There should be no functional change in this patch, but readability
and the generated object code improves, along with avoiding the
warnings.

 (on Armada 370 RD and Armada XP GP, boot tested, plus a little bit of
 DMA traffic by reading data from a SD card)

Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-02-06 20:16:39 +00:00
Paolo Bonzini
f781951299 kvm: add halt_poll_ns module parameter
This patch introduces a new module parameter for the KVM module; when it
is present, KVM attempts a bit of polling on every HLT before scheduling
itself out via kvm_vcpu_block.

This parameter helps a lot for latency-bound workloads---in particular
I tested it with O_DSYNC writes with a battery-backed disk in the host.
In this case, writes are fast (because the data doesn't have to go all
the way to the platters) but they cannot be merged by either the host or
the guest.  KVM's performance here is usually around 30% of bare metal,
or 50% if you use cache=directsync or cache=writethrough (these
parameters avoid that the guest sends pointless flush requests, and
at the same time they are not slow because of the battery-backed cache).
The bad performance happens because on every halt the host CPU decides
to halt itself too.  When the interrupt comes, the vCPU thread is then
migrated to a new physical CPU, and in general the latency is horrible
because the vCPU thread has to be scheduled back in.

With this patch performance reaches 60-65% of bare metal and, more
important, 99% of what you get if you use idle=poll in the guest.  This
means that the tunable gets rid of this particular bottleneck, and more
work can be done to improve performance in the kernel or QEMU.

Of course there is some price to pay; every time an otherwise idle vCPUs
is interrupted by an interrupt, it will poll unnecessarily and thus
impose a little load on the host.  The above results were obtained with
a mostly random value of the parameter (500000), and the load was around
1.5-2.5% CPU usage on one of the host's core for each idle guest vCPU.

The patch also adds a new stat, /sys/kernel/debug/kvm/halt_successful_poll,
that can be used to tune the parameter.  It counts how many HLT
instructions received an interrupt during the polling period; each
successful poll avoids that Linux schedules the VCPU thread out and back
in, and may also avoid a likely trip to C1 and back for the physical CPU.

While the VM is idle, a Linux 4 VCPU VM halts around 10 times per second.
Of these halts, almost all are failed polls.  During the benchmark,
instead, basically all halts end within the polling period, except a more
or less constant stream of 50 per second coming from vCPUs that are not
running the benchmark.  The wasted time is thus very low.  Things may
be slightly different for Windows VMs, which have a ~10 ms timer tick.

The effect is also visible on Marcelo's recently-introduced latency
test for the TSC deadline timer.  Though of course a non-RT kernel has
awful latency bounds, the latency of the timer is around 8000-10000 clock
cycles compared to 20000-120000 without setting halt_poll_ns.  For the TSC
deadline timer, thus, the effect is both a smaller average latency and
a smaller variance.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-02-06 13:08:37 +01:00
Olof Johansson
6f4554bdff Samsung CPUIdle updates for v3.20
- adds coupled cpuidle support for exynos4210
   : fix for Exynos platform PM code preparing it for the coupled
   cpuidle support and adds coupled cpuidle AFTR mode on exynos4210
 
 Note this is mostrly based on earlier cpuidle-exynos4210 driver
 from Daniel Lezcano and Bart updated.
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Merge tag 'samsung-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers

Merge "Samsung CPUIdle updates for v3.20" from Kukjin Kim:

- adds coupled cpuidle support for exynos4210
  : fix for Exynos platform PM code preparing it for the coupled
  cpuidle support and adds coupled cpuidle AFTR mode on exynos4210

Note this is mostrly based on earlier cpuidle-exynos4210 driver
from Daniel Lezcano and Bart updated.

* tag 'samsung-cpuidle' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  cpuidle: exynos: add coupled cpuidle support for exynos4210
  ARM: EXYNOS: apply S5P_CENTRAL_SEQ_OPTION fix only when necessary

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 01:07:33 -08:00
Olof Johansson
880c0d140d Samsung 4th DT updates for v3.20
- For exynos4 SoCs
   : add PPMU node
   : add syscon phandle for video-phy node
 
 - For exynos4415 SoC
   : add mipi dsi and fimd device nodes
 
 - For exynos3250-monk and exynos3250-rinato boards
   : add PPMU node
 
 - For exynos4412-trats2 board
   : add maxim77693 fuel gauge and battery charger nodes
   : fix regarding CLK_MOUT_CAMn parent and CLK_UART_ISP_SCLK clocks
   : switch max77686 regulators to GPIO control
   : add suspend configuration for max77686 regulators
   : add PPMU node and sound nodes
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Merge tag 'samsung-dt-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/dt

Merge "Samsung 4th DT updates for v3.20" from Kukjin Kim:

- For exynos4 SoCs
  : add PPMU node
  : add syscon phandle for video-phy node

- For exynos4415 SoC
  : add mipi dsi and fimd device nodes

- For exynos3250-monk and exynos3250-rinato boards
  : add PPMU node

- For exynos4412-trats2 board
  : add maxim77693 fuel gauge and battery charger nodes
  : fix regarding CLK_MOUT_CAMn parent and CLK_UART_ISP_SCLK clocks
  : switch max77686 regulators to GPIO control
  : add suspend configuration for max77686 regulators
  : add PPMU node and sound nodes

* tag 'samsung-dt-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: dts: Add PPMU node for exynos4412-trats2
  ARM: dts: Add PPMU node for exynos3250-monk and exynos3250-rinato
  ARM: dts: Add PPMU dt node for exynos4 and exynos4210
  ARM: dts: Add PPMU dt node for exynos3250
  ARM: dts: add mipi dsi device node for exynos4415
  ARM: dts: add fimd device node for exynos4415
  ARM: dts: Add syscon phandle to the video-phy node for Exynos4
  ARM: dts: Add sound nodes for exynos4412-trats2
  ARM: dts: Fix CLK_MOUT_CAMn parent clocks assignment for exynos4412-trats2
  ARM: dts: Fix CLK_UART_ISP_SCLK clock assignment in exynos4x12.dtsi
  ARM: dts: Add max77693 charger node for exynos4412-trats2
  ARM: dts: Switch max77686 regulators to GPIO control for exynos4412-trats2
  ARM: dts: Add suspend configuration for max77686 regulators for exynos4412-trats2
  ARM: dts: Add Maxim 77693 fuel gauge node for exynos4412-trats2

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 01:05:12 -08:00
Olof Johansson
0f01f9588d Samsung exynos_defconfig updates for v3.20
- Enable CONFIG_LOCKUP_DETECTOR
   : to detect hard lockup and soft lockup
 - Enable PMIC and MUIC
   : for battery charger, fuel-gauge, regulators
 - Enable CONFIG_FHANDLE
   : this is required by systemd
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Merge tag 'samsung-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/defconfig

Merge "Samsung exynos_defconfig updates for v3.20" from Kukjin Kim:

- Enable CONFIG_LOCKUP_DETECTOR
  : to detect hard lockup and soft lockup
- Enable PMIC and MUIC
  : for battery charger, fuel-gauge, regulators
- Enable CONFIG_FHANDLE
  : this is required by systemd

* tag 'samsung-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: exynos_defconfig: Enable CONFIG_FHANDLE
  ARM: exynos_defconfig: Enable PMIC and MUIC drivers for Gears and Trats2
  ARM: exynos_defconfig: Enable CONFIG_LOCKUP_DETECTOR
  ARM: exynos_defconfig: Enable LM90 driver

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:48:41 -08:00
Olof Johansson
f5ebaf2687 Relicense all Armada dts{i} files under dual license of GPLv2+ and
X11. This should make it easier to reuse these files with other
 operating systems and boot loaders.
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Merge tag 'mvebu-dt-3.20-3' of git://git.infradead.org/linux-mvebu into next/dt

Merge "ARM: mvebu: DT changes for v3.20 (round 2)" from Gregory CLEMENT:

Relicense all Armada dts{i} files under dual license of GPLv2+ and
X11. This should make it easier to reuse these files with other
operating systems and boot loaders.

* tag 'mvebu-dt-3.20-3' of git://git.infradead.org/linux-mvebu: (27 commits)
  ARM: mvebu: armada-xp-synology-ds414: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-openblocks-ax3-4: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-netgear-rn2120: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-mv78460: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-mv78260: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-mv78230: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-matrix: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-lenovo-ix4-300d: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-gp: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-db: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-xp-axpwifiap: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-38x: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-388-rd: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-385: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-388-db: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-380: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-375: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-375-db: Relicense the device tree under GPLv2+/X11
  ARM: mvebu: armada-370-xp: Relicense the device tree under GPLv2+/X11
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:32:49 -08:00
Barry Song
41e229a912 ARM: sirf: drop redundant function and marco declaration
with the patchset to add CSR atlas7 support, the below stuff
has no user now:
SIRFSOC_VA
sirfsoc_map_lluart
sirfsoc_map_scu

the related patches missed to drop them.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:31:58 -08:00
Olof Johansson
43018fc5ac Keystone DEVTMPFS config update for 3.20
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Merge tag 'keystone-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into next/defconfig

Merge "ARM: Keystone soc config updates for 3.20" from Santosh Shilimkar:

Keystone DEVTMPFS config update for 3.20

* tag 'keystone-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
  ARM: config: add DEVTMPFS option by default to keystone config

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:27:34 -08:00
Mark Rutland
279806bfca arm: omap: specify PMUs are for ARMv7 CPUs
Now that we can specify which PMU variant we're likely to deal with, do
so in the omap board code. This will allow us to split the ARMv6, ARMv7,
and XScale PMU drivers.

The unnecessary include of asm/pmu.h is also removed.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:13:06 -08:00
Mark Rutland
744503b35a arm: shmobile: specify PMUs are for ARMv7 CPUs
Now that we can specify which PMU variant we're likely to deal with, do
so in the shmobile board code. This will allow us to split the ARMv6,
ARMv7, and XScale PMU drivers

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:13:01 -08:00
Mark Rutland
b22a75cf9d arm: iop: specify PMUs are for XScale CPUs
Now that we can specify which PMU variant we're likely to deal with, do
so in the iop board code. This will allow us to split the ARMv6, ARMv7,
and XScale PMU drivers.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Olof Johansson <olof@lixom.net>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:12:59 -08:00
Mark Rutland
f9eff21976 arm: pxa: specify PMUs are for XScale CPUs
Now that we can specify which PMU variant we're likely to deal with, do
so in the pxa board code. This will allow us to split the ARMv6, ARMv7,
and XScale PMU drivers.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:12:57 -08:00
Mark Rutland
cbed8388bf arm: realview: specify PMU types
Now that we can specify which PMU variant we're likely to deal with, do
so in the realview board code. This will allow us to split the ARMv6,
ARMv7, and XScale PMU drivers.

The Realview EB may be used with ARMv6 or ARMv7 CPUs, but luckily
there's only a single ARMv7 CPU, so we can match that explicitly to
determine whether or not we have an ARMv7 PMU.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Olof Johansson <olof@lixom.net>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:12:55 -08:00
Olof Johansson
f9e297660b Device tree related chages for omaps to fix dm816x syscon,
fix various devices for gta04, and add USB nodes for am57xx
 and dra7.
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Merge tag 'omap-for-v3.20/dt-pt3-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt

Merge "omap device tree changes for v3.20, part 3" from Tony Lindgren:

Device tree related chages for omaps to fix dm816x syscon,
fix various devices for gta04, and add USB nodes for am57xx
and dra7.

* tag 'omap-for-v3.20/dt-pt3-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: am57xx-beagle-x15: Fix USB2 mode
  ARM: dts: am57xx-beagle-x15: Add extcon nodes for USB
  ARM: dts: dra72-evm: Add extcon nodes for USB
  ARM: dts: dra7-evm: Add extcon nodes for USB
  ARM: dts: Fix dm816x pinctrl and syscon so they are children of SCM
  ARM: dts: omap3-gta04: Disable keypad
  ARM: dts: omap3-gta04: only power DSS when necessary.
  ARM: dts: omap3-gta04: add gyroscope
  ARM: dts: omap3-gta04: enable power-off for wifi card.
  ARM: dts: omap3-gta04: add comments about gpios
  ARM: dts: omap3-gta04: Add ramp value for twl4030 audio
  ARM: dts: omap3-gta04: Enable power-off using twl4030
  ARM: dts: omap3-gta04: Fix a GPIO line for bma180 node
  ARM: dts: omap3-gta04: Enable twl audio vibra support
  ARM: dts: omap3-gta04: Enable mcbps2 necessary for audio
  ARM: dts: omap3-gta04: Fix audio node malformatting
  ARM: dts: omap3-gta04: Fix backup-battery charging in devicetree file.

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:09:16 -08:00
Olof Johansson
6f8c8f6baf Change are regulator nodes for the cpu and gpu regulators on the act8846
variant of the rk3288-evb and the setting of a clock for the watchdog.
 Also the lcd and hdmi controllers on both the firefly and the evb get
 enabled and let us now boot into fbcon console sucessfully.
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Merge tag 'v3.20-rockchip-dts3' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/dt

Merge "ARM: rockchip: third (and last) batch of dts updates for 3.20" from
Heiko Stübner:

Change are regulator nodes for the cpu and gpu regulators on the act8846
variant of the rk3288-evb and the setting of a clock for the watchdog.
Also the lcd and hdmi controllers on both the firefly and the evb get
enabled and let us now boot into fbcon console sucessfully.

* tag 'v3.20-rockchip-dts3' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  ARM: dts: rockchip: move the hdmi ddc-i2c-bus property to the actual boards
  ARM: dts: rockchip: enable vops and hdmi output on rk3288-firefly and -evb
  ARM: dts: rockchip: housekeeping off i2c0 on rk3288-evb boards
  ARM: dts: rockchip: add cpu and gpu regulators to rk3288-evb-act8846
  ARM: dts: rockchip: add rk3288 watchdog clock
  clk: rockchip: add id for watchdog pclk on rk3288
  clk: rockchip: add clock IDs for the PVTM clocks
  clk: rockchip: add clock ID for usbphy480m_src

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-06 00:03:28 -08:00
Olof Johansson
df1a668125 Fourth cleanup/soc batch for 3.20:
- merge all the at91sam9 code and remove the empty SoC-specific files
 - remove the at91_boot_soc that is now useless in a DT context
 - move the sram code in PM code as it's now only used there
 - some file + function name changes after this big cleanup
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Merge tag 'at91-soc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into next/soc

Merge "at91: cleanup/soc for 3.20 #4" from Nicolas Ferre:

Fourth cleanup/soc batch for 3.20:
- merge all the at91sam9 code and remove the empty SoC-specific files
- remove the at91_boot_soc that is now useless in a DT context
- move the sram code in PM code as it's now only used there
- some file + function name changes after this big cleanup

* tag 'at91-soc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: at91/trivial: unify functions and machine names
  ARM: at91: remove at91_dt_initialize and machine init_early()
  ARM: at91: change board files into SoC files
  ARM: at91: remove at91_boot_soc
  ARM: at91: move alternative initial mapping to board-dt-sama5.c
  ARM: at91: merge all SOC_AT91SAM9xxx
  ARM: at91: at91rm9200: set idle and restart from rm9200_dt_device_init()
  ARM: at91: board-dt-sama5: add phy_fixup to override NAND_Tree
  ARM: at91/dt: sam9263: Add missing clocks to lcdc node
  ARM: at91: sama5d3: dt: correct the sound route
  ARM: at91/dt: sama5d4: fix the timer reg length

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-05 23:58:29 -08:00
David S. Miller
6e03f896b5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/vxlan.c
	drivers/vhost/net.c
	include/linux/if_vlan.h
	net/core/dev.c

The net/core/dev.c conflict was the overlap of one commit marking an
existing function static whilst another was adding a new function.

In the include/linux/if_vlan.h case, the type used for a local
variable was changed in 'net', whereas the function got rewritten
to fix a stacked vlan bug in 'net-next'.

In drivers/vhost/net.c, Al Viro's iov_iter conversions in 'net-next'
overlapped with an endainness fix for VHOST 1.0 in 'net'.

In drivers/net/vxlan.c, vxlan_find_vni() added a 'flags' parameter
in 'net-next' whereas in 'net' there was a bug fix to pass in the
correct network namespace pointer in calls to this function.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-05 14:33:28 -08:00
Mark Brown
c503ca52a5 Merge remote-tracking branch 'asoc/fix/samsung' into asoc-linus 2015-02-05 19:36:29 +00:00
Sylwester Nawrocki
fddcd30073 ARM: dts: Fix I2S1, I2S2 compatible for exynos4 SoCs
I2S1, I2S2 on Exynos4 SoC series have limited functionality compared
to I2S0, "samsung,s3c6410-i2s" compatible should be used for them.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
2015-02-05 19:36:00 +00:00
Jiang Liu
14d76b68f2 PCI: Use common resource list management code instead of private implementation
Use common resource list management data structure and interfaces
instead of private implementation.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-02-05 15:09:25 +01:00
Andy Shevchenko
d8ded50f8b dmaengine: dw: define DW_DMA_MAX_NR_MASTERS
Instead of using magic number in the code the patch provides
DW_DMA_MAX_NR_MASTERS constant.

While here, restrict the reading of data width array by amount of the actual
number of AHB masters.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-02-04 22:39:44 -08:00
Linus Torvalds
5659c0e470 Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "A number of ARM fixes, the biggest is fixing a regression caused by
  appended DT blobs exceeding 64K, causing the decompressor fixup code
  to fail to patch the DT blob.  Another important fix is for the ASID
  allocator from Will Deacon which prevents some rare crashes seen on
  some systems.  Lastly, there's a build fix for v7M systems when printk
  support is disabled.

  The last two remaining fixes are more cosmetic - the IOMMU one
  prevents an annoying harmless warning message, and we disable the
  kernel strict memory permissions on non-MMU which can't support it
  anyway"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8299/1: mm: ensure local active ASID is marked as allocated on rollover
  ARM: 8298/1: ARM_KERNMEM_PERMS only works with MMU enabled
  ARM: 8295/1: fix v7M build for !CONFIG_PRINTK
  ARM: 8294/1: ATAG_DTB_COMPAT: remove the DT workspace's hardcoded 64KB size
  ARM: 8288/1: dma-mapping: don't detach devices without an IOMMU during teardown
2015-02-04 09:42:55 -08:00
Chanwoo Choi
7808cae3e9 ARM: dts: Add PPMU node for exynos4412-trats2
This patch add dt node for PPMU_{DMC0|DMC1|LEFTBUS|RIGHTBUS} for
exynos4412-trats2 board. Each PPMU dt node includes one event of
'PPMU Count3'.

Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 08:11:52 +09:00
Chanwoo Choi
8d6b9b4694 ARM: dts: Add PPMU node for exynos3250-monk and exynos3250-rinato
This patch adds PPMU dt node for Exynos3250 based Rinato and Monk
boards.  The PPMU node is used to get the utilization of DMC0/DMC1/
LEFTBUS/RIGHTBUS Block.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 08:10:58 +09:00
Chanwoo Choi
30e0e476ae ARM: dts: Add PPMU dt node for exynos4 and exynos4210
This patch add PPMUs (Platform Performance Monitoring Unit) dt node
for Exynos4 (Exynos4210/4212/4412) SoCs. PPMU dt node is used for
monitor the utilization of each IP.

The Exynos4210/Exynos4212/Exynos4412 SoC includes following PPMUs:
- PPMU_DMC0      0x106A_0000
- PPMU_DMC1      0x106B_0000
- PPMU_CPU       0x106C_0000
- PPMU_ACP       0x10AE_0000
- PPMU_RIGHT_BUS 0x112A_0000
- PPMU_LEFT_BUS  0x116A_0000
- PPMU_FSYS      0x1263_0000
- PPMU_LCD0      0x11E4_0000
- PPMU_CAMIF     0x11AC_0000
- PPMU_IMAGE     0x12AA_0000
- PPMU_TV        0x12E4_0000
- PPMU_3D        0x1322_0000
- PPMU_MFC_LEFT  0x1366_0000
- PPMU_MFC_RIGHT 0x1367_0000

Additionally, the Exynos4210 SoC includes following PPMUs:
- PPMU_LCD1      0x1224_0000

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 08:10:58 +09:00
Chanwoo Choi
e4502367a0 ARM: dts: Add PPMU dt node for exynos3250
This patch adds PPMU (Platform Performance Monitoring Unit) dt node
to estimate the utilization of each IP in Exynos SoC through DEVFREQ
Event subsystem.

This patch adds following PPMU dt nodes:
- PPMU_DMC0     0x106a0000
- PPMU_DMC1     0x106b0000
- PPMU_RIGHTBUS 0x112A0000
- PPMU_LEFTBUS  0x116A0000
- PPMU_CAMIF    0x11AC0000
- PPMU_LCD0     0x11E40000
- PPMU_FSYS     0x12630000
- PPMU_3D       0x13220000
- PPMU_MFC      0x13660000
- PPMU_CPU      0x106c0000

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 08:10:58 +09:00
YoungJun Cho
59f504dc25 ARM: dts: add mipi dsi device node for exynos4415
This patch adds mipi dsi device node to exynos4415.dtsi.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 08:05:20 +09:00
YoungJun Cho
6c7c87a382 ARM: dts: add fimd device node for exynos4415
This patch adds fimd device node to exynos4415.dtsi.

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 08:05:20 +09:00
Sylwester Nawrocki
c8ef0bee5f ARM: dts: Add syscon phandle to the video-phy node for Exynos4
This is required to fix regression after introducing the PMU device
nodes required for the PMU driver modified in commit 14fc8b93d4
("ARM: EXYNOS: Add platform driver support for Exynos PMU").
This change is needed to make MIPI DSI displays and MIPI CSI-2
camera sensors working again on Exynos4 boards.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 07:58:24 +09:00
Inha Song
440e5aefa7 ARM: dts: Add sound nodes for exynos4412-trats2
This patch add WM1811 audio codec, I2S interface and the sound
machine nodes to enable audio on exynos4412-trats2 board.

Signed-off-by: Inha Song <ideal.song@samsung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 07:51:38 +09:00
Sylwester Nawrocki
cfe3b8933c ARM: dts: Fix CLK_MOUT_CAMn parent clocks assignment for exynos4412-trats2
In order to get exact 24MHz clock frequency value for the camera
sensor and avoid rounding errors the parent clock must be CLK_XUSBXTI,
not CLK_MOUT_MPLL_USER_T.  Currently the sensor's master clock
frequency is too high and the sensor doesn't work properly.

This fixes commit 0357a4438d
("ARM: dts: Specify default clocks for Exynos4 camera devices").

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 07:49:49 +09:00
Sylwester Nawrocki
79f3c37c88 ARM: dts: Fix CLK_UART_ISP_SCLK clock assignment in exynos4x12.dtsi
Assign proper FIMC-IS UART gate clock in the device DT node and not
use the SRC_MASK gate. This fixes regression introduced in commit
a37c82a3b3 ("clk: samsung: exynos4: Remove
SRC_MASK_ISP gates").

Without this change exynos4 fimc-is driver fails to probe with an
error log:

[    1.842447] ERROR: could not get clock /camera/fimc-is@12000000:uart(13)
[    1.848529] exynos4-fimc-is 12000000.fimc-is: failed to get clock: uart
[    1.855275] exynos4-fimc-is: probe of 12000000.fimc-is failed with error -2

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 07:49:08 +09:00
Krzysztof Kozlowski
043ef1485f ARM: dts: Add max77693 charger node for exynos4412-trats2
Add to Trats2 DTS new node for configuring the max77693 charger driver.
Only the maxim,constant-microvolt differs from default value but set all
of the optional properties anyway.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 07:47:39 +09:00
Krzysztof Kozlowski
faf9a3eaa1 ARM: dts: Switch max77686 regulators to GPIO control for exynos4412-trats2
Remove fixed regulators (duplicating what max77686 provides) and
add GPIO enable control to max77686 regulators.

This gives the system full control over those regulators. Previously
the state of such regulators was a mixture of what max77686 driver set
over I2C and what regulator-fixed set through GPIO.

Removal of 'regulator-always-on' from CAM_ISP_CORE_1.2V (buck9) allows
disabling it when it is not used. Previously this regulator was always
enabled because its enable state is a OR of:
 - ENB9 GPIO (turned always on by regulator-fixed),
 - BUCK9EN field in BUCK9CTRL register (off by max77686 through I2C).

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 07:43:54 +09:00
Krzysztof Kozlowski
4a235f6aa9 ARM: dts: Add suspend configuration for max77686 regulators for exynos4412-trats2
Add suspend to RAM configuration for max77686 regulators. Some LDOs
and bucks are disabled. This reduces energy consumption during S2R,
approximately from 17 mA to 9 mA.

Additionally remove old and not supported bindings:
 - regulator-mem-off
 - regulator-mem-idle
 - regulator-mem-on
The max77686 driver does not parse them and they are not documented
anywere.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 07:43:49 +09:00
Krzysztof Kozlowski
e8614292cd ARM: dts: Add Maxim 77693 fuel gauge node for exynos4412-trats2
Add node for fuel gauge present in Maxim 77693 PMIC. This allows control
over battery charging state on Trats2 board.

The fuel gauge is compatible with max17042 battery driver (Maxim
17042/17047/17050).  Although datasheet rev 2.2 for MAX77693 describes
fuel gauge as Maxim 17042-like, the chip on Trats2 board identifies
itself as Maxim 17047-like.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-04 07:43:44 +09:00
Vignesh R
e6e4a0d198 ARM: dts: AM335x: Make charge delay a DT parameter for TSC
The charge delay value is by default 0x400. But it can be set to lower
values on some boards, as long as false pen-ups are avoided. Lowering the
value increases the sampling rate (though current sampling rate is
sufficient for TSC operation). In some boards, the value has to be
increased to avoid false pen-up events. Hence, charge delay has been
made a DT parameter.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-02-03 11:50:39 -08:00
Will Deacon
8e64806672 ARM: 8299/1: mm: ensure local active ASID is marked as allocated on rollover
Commit e1a5848e33 ("ARM: 7924/1: mm: don't bother with reserved ttbr0
when running with LPAE") removed the use of the reserved TTBR0 value
for LPAE systems, since the ASID is held in the TTBR and can be updated
atomicly with the pgd of the next mm.

Unfortunately, this patch forgot to update flush_context, which
deliberately avoids marking the local active ASID as allocated, since we
used to switch via ASID zero and didn't need to allocate the ASID of
the previous mm. The side-effect of this is that we can allocate the
same ASID to the next mm and, between flushing the local TLB and updating
TTBR0, we can perform speculative TLB fills for userspace nG mappings
using the page table of the previous mm.

The consequence of this is that the next mm can erroneously hit some
mappings of the previous mm. Note that this was made significantly
harder to hit by a391263cd8 ("ARM: 8203/1: mm: try to re-use old ASID
assignments following a rollover") but is still theoretically possible.

This patch fixes the problem by removing the code from flush_context
that forces the allocated ASID to zero for the local CPU. Many thanks
to the Broadcom guys for tracking this one down.

Fixes: e1a5848e33 ("ARM: 7924/1: mm: don't bother with reserved ttbr0 when running with LPAE")

Cc: <stable@vger.kernel.org> # v3.14+
Reported-by: Raymond Ngun <rngun@broadcom.com>
Tested-by: Raymond Ngun <rngun@broadcom.com>
Reviewed-by: Gregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-02-03 12:57:33 +00:00
Michael Turquette
f85c6edfae Tegra clock fixes for 3.20
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Merge tag 'tegra-clk-3.20' of git://nv-tegra.nvidia.com/user/pdeschrijver/linux into clk-next

Tegra clock fixes for 3.20
2015-02-02 15:01:10 -08:00
Michael Turquette
54eea32f7e Merge branch 'clk-next' into v3.19-rc7 2015-02-02 14:59:38 -08:00
Tomeu Vizoso
1c8e600440 clk: Add rate constraints to clocks
Adds a way for clock consumers to set maximum and minimum rates. This
can be used for thermal drivers to set minimum rates, or by misc.
drivers to set maximum rates to assure a minimum performance level.

Changes the signature of the determine_rate callback by adding the
parameters min_rate and max_rate.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
[sboyd@codeaurora.org: set req_rate in __clk_init]
Signed-off-by: Michael Turquette <mturquette@linaro.org>
[mturquette@linaro.org: min/max rate for sun6i_ahb1_clk_determine_rate
                        migrated clk-private.h changes to clk.c]
2015-02-02 14:23:42 -08:00
Michael Turquette
42ed83f516 arm: omap2+ remove dead clock code
Remove omap_clocks_register and dummy_ck. The former is not used anymore
now that the statically defined clk stuctures are replaced with proper
descriptors and registered with the framework.

The dummy clock in arch/arm/mach-omap2 is made redundant by the OMAP3+
clock data that migrated to drivers/clk.

An additional benefit to this clean-up is removing the references to
clk-private.h which will be removed.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
2015-02-02 14:23:39 -08:00
Michael Turquette
fe76756052 Merge branch 'clk-omap-legacy' into clk-next
Conflicts:
	arch/arm/mach-omap2/cclock3xxx_data.c
2015-02-02 14:23:33 -08:00
Tomeu Vizoso
035a61c314 clk: Make clk API return per-user struct clk instances
Moves clock state to struct clk_core, but takes care to change as little API as
possible.

struct clk_hw still has a pointer to a struct clk, which is the
implementation's per-user clk instance, for backwards compatibility.

The struct clk that clk_get_parent() returns isn't owned by the caller, but by
the clock implementation, so the former shouldn't call clk_put() on it.

Because some boards in mach-omap2 still register clocks statically, their clock
registration had to be updated to take into account that the clock information
is stored in struct clk_core now.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
[mturquette@linaro.org: adapted clk_has_parent to struct clk_core
                        applied OMAP3+ DPLL fix from Tero & Tony]
2015-02-02 14:22:19 -08:00
Bjorn Helgaas
ae03e7c465 Merge branches 'pci/host-generic' and 'pci/host-versatile' into next
* pci/host-generic:
  of/pci: Free resources on failure in of_pci_get_host_bridge_resources()

* pci/host-versatile:
  PCI: versatile: Add DT-based ARM Versatile PB PCIe host driver
  ARM: dts: versatile: add PCI controller binding
  PCI: versatile: Add DT docs for ARM Versatile PB PCIe driver
2015-02-02 14:49:49 -06:00
Bjorn Helgaas
2cd59deaef Merge branch 'pci/config' into next
* pci/config:
  PCI: xilinx: Convert to use generic config accessors
  PCI: xgene: Convert to use generic config accessors
  PCI: tegra: Convert to use generic config accessors
  PCI: rcar: Convert to use generic config accessors
  PCI: generic: Convert to use generic config accessors
  powerpc/powermac: Convert PCI to use generic config accessors
  powerpc/fsl_pci: Convert PCI to use generic config accessors
  ARM: ks8695: Convert PCI to use generic config accessors
  ARM: sa1100: Convert PCI to use generic config accessors
  ARM: integrator: Convert PCI to use generic config accessors
  ARM: cns3xxx: Convert PCI to use generic config accessors
  PCI: Add generic config accessors
  powerpc/PCI: Add struct pci_ops member names to initialization
  mn10300/PCI: Add struct pci_ops member names to initialization
  MIPS: PCI: Add struct pci_ops member names to initialization
  frv/PCI: Add struct pci_ops member names to initialization
2015-02-02 14:49:29 -06:00
Tomasz Figa
62d38099bf ARM: dts: exynos4: Add stdout-path properties
This patch adds stdout-path property to chosen nodes of Exynos4 boards
to enable use of earlycon feature without the need to hardcode port
number in kernel itself.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-02-02 10:11:26 -08:00
Peter De Schrijver
d0a57bd5b5 clk: tegra: make tegra_clocks_apply_init_table() arch_initcall
tegra_clocks_apply_init_table() needs to be called after the udelay
loop has been calibrated (see commit
441f199a37 ("clk: tegra: defer
application of init table") for why that is).  On existing Tegra SoCs
this was done by calling tegra_clocks_apply_init_table() from
tegra_dt_init(). To make this also work on ARM64, we need to change
this into an initcall. tegra_dt_init() is called from
customize_machine which is an arch_initcall. Therefore this should
also work on existing 32bit Tegra SoCs.

Tested on Tegra20 (ventana), Tegra30 (beaverboard), Tegra124 (jetson TK1) and
Tegra132.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
[paul@pwsan.com: tweaked the commit message]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
2015-02-02 15:47:28 +02:00
Nicolas Ferre
ad3fc3e316 ARM: at91/trivial: unify functions and machine names
Remove the string "(Device Tree)" after the machine name because all AT91
machines use the DT nowadays.
Also change some function names to unify following the convention:
- at91sam9xxx aren't named sam9, 9xxx but with the full name
- sama5 are the ones that don't have the at91 prefix anymore.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:29 +01:00
Alexandre Belloni
827de1f123 ARM: at91: remove at91_dt_initialize and machine init_early()
Move the ramc initialization to pm.c as it is the only user left.
This allows us to get rid of at91_dt_initialize() that was the only one called
by the init_early() function pointer of struct machine_desc.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: adapt patch to newer series]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:29 +01:00
Nicolas Ferre
cac0172389 ARM: at91: change board files into SoC files
As board files are now DT only and can address all aspects of the SoC family,
we can rename them so that the mach-at91 directory looks cleaner.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:28 +01:00
Alexandre Belloni
edd942247f ARM: at91: remove at91_boot_soc
at91_boot_soc and at91_init_soc structures are not used by any SoC, remove
their use. Also remove all the now empty SoC files.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: different organization of the patches]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:28 +01:00
Nicolas Ferre
6bd3e3f491 ARM: at91: move alternative initial mapping to board-dt-sama5.c
For sama5d4, remove an indirection and the remaining need for at91_boot_soc
structure.
This will allow further cleanup.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:27 +01:00
Alexandre Belloni
2b019a43cc ARM: at91: merge all SOC_AT91SAM9xxx
Only use SOC_AT91SAM9 for all the at91sam9 SoCs. It removes all the empty
at91sam9xxx.c SoC files. It also removes the useless at91_init_soc affectation
procedure and its "init" function pointer.
Only the SoC detection and display are kept for the at91sam9:
at91_soc_is_enabled() and at91_boot_soc.map_io() function calls are also
removed.

It enables HAVE_AT91_SMD and HAVE_AT91_UTMI for all the sam9 SoCs but this only
represents 96 bytes of uncompressed kernel code.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: different organization of the patches]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:26 +01:00
Alexandre Belloni
7d7ffd7bae ARM: at91: at91rm9200: set idle and restart from rm9200_dt_device_init()
Setup arm_pm_idle and arm_pm_restart function pointers from
rm9200_dt_device_init() function to simplify the at91rm9200 initialization
process.
This same move is already done for the sam9s.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: adapt patch to newer series]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-02-02 11:01:26 +01:00
Nicolas Ferre
980657d8cd Third batch of cleanup/soc for 3.20:
- several fixes and adjustments following the last cleanup batch
 - removal of some unused Kconfig options
 - slight PM and pm_idle rework to ease future rework
 - removal of unneeded mach/system_rev.h
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Merge tag 'at91-cleanup3' into at91-3.20-soc
2015-02-02 10:59:34 +01:00
Nicolas Ferre
c5517b1ea7 Merge branch 'at91-3.19-fixes' into at91-3.20-soc 2015-02-02 10:58:59 +01:00
Linus Torvalds
fba7e99458 ARM: SoC fixes
One more week's worth of fixes. Worth pointing out here are:
 
 - A patch fixing detaching of iommu registrations when a device is removed --
   earlier the ops pointer wasn't managed properly
 - Another set of Renesas boards get the same GIC setup fixup as others have in
   previous -rcs
 - Serial port aliases fixups for sunxi. We did the same to tegra but we
   caught that in time before the merge window due to more machines being
   affected. Here it took longer for anyone to notice.
 - A couple more DT tweaks on sunxi
 - A follow-up patch for the mvebu coherency disabling in last -rc batch
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Merge tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "One more week's worth of fixes.  Worth pointing out here are:

   - A patch fixing detaching of iommu registrations when a device is
     removed -- earlier the ops pointer wasn't managed properly
   - Another set of Renesas boards get the same GIC setup fixup as
     others have in previous -rcs
   - Serial port aliases fixups for sunxi.  We did the same to tegra but
     we caught that in time before the merge window due to more machines
     being affected.  Here it took longer for anyone to notice.
   - A couple more DT tweaks on sunxi
   - A follow-up patch for the mvebu coherency disabling in last -rc
     batch"

* tag 'armsoc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm: dma-mapping: Set DMA IOMMU ops in arm_iommu_attach_device()
  ARM: shmobile: r8a7790: Instantiate GIC from C board code in legacy builds
  ARM: shmobile: r8a73a4: Instantiate GIC from C board code in legacy builds
  ARM: mvebu: don't set the PL310 in I/O coherency mode when I/O coherency is disabled
  ARM: sunxi: dt: Fix aliases
  ARM: dts: sun4i: Add simplefb node with de_fe0-de_be0-lcd0-hdmi pipeline
  ARM: dts: sun6i: ippo-q8h-v5: Fix serial0 alias
  ARM: dts: sunxi: Fix usb-phy support for sun4i/sun5i
2015-02-01 13:20:47 -08:00
Olof Johansson
28111dda37 Third Round of Renesas ARM Based SoC Fixes for v3.19
* Instantiate GIC from C board code in legacy builds on r8a7790 and r8a73a4
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Merge tag 'renesas-soc-fixes3-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Merge "Third Round of Renesas ARM Based SoC Fixes for v3.19" from Simon Horman:

* Instantiate GIC from C board code in legacy builds on r8a7790 and r8a73a4

* tag 'renesas-soc-fixes3-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: r8a7790: Instantiate GIC from C board code in legacy builds
  ARM: shmobile: r8a73a4: Instantiate GIC from C board code in legacy builds

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-02-01 08:51:12 -08:00
Tony Lindgren
f276c0ce5d net: davinci_emac: Get device MAC on 3517
Looks like on 3517 davinci_emac MAC address registers have a
different layout compared to dm816x and am33xx.

Let's add a function to get the 3517 MAC address.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-30 17:42:01 -08:00
Roger Quadros
726806ad9b ARM: dts: am57xx-beagle-x15: Fix USB2 mode
On this board USB2 is meant to be used as peripheral only.
The ID pin for USB2 is hardwired HIGH.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-01-30 15:48:39 -08:00
Roger Quadros
f60db98eaa ARM: dts: am57xx-beagle-x15: Add extcon nodes for USB
On this EVM, the USB cable state has to be determined via the
ID pin tied to a GPIO line. We use the gpio-usb-extcon driver
to read the ID pin and the extcon framework to forward
the USB cable state information to the USB driver so the
controller can be configured in the right mode (host/peripheral).

NOTE: the ports on this board cannot switch roles. They are
configured either host or peripheral by hardwiring the
respective ID pins.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-01-30 15:48:39 -08:00
Roger Quadros
f56de327b4 ARM: dts: dra72-evm: Add extcon nodes for USB
On this EVM, the USB cable state has to be determined via the
ID pin tied to a GPIO line. We use the gpio-usb-extcon driver
to read the ID pin and the extcon framework to forward
the USB cable state information to the USB driver so the
controller can be configured in the right mode (host/peripheral).

Gets USB peripheral mode to work on this EVM.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-01-30 15:48:39 -08:00
Roger Quadros
87517d26d8 ARM: dts: dra7-evm: Add extcon nodes for USB
On this EVM, the USB cable state has to be determined via the
ID pin tied to a GPIO line. We use the gpio-usb-extcon driver
to read the ID pin and the extcon framework to forward
the USB cable state information to the USB driver so the
controller can be configured in the right mode (host/peripheral).

Gets USB peripheral mode to work on this EVM.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-01-30 15:48:39 -08:00