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Author SHA1 Message Date
Johan Hovold
222a12fca6 rtc: omap: add support for pmic_power_en 
Add new property "ti,system-power-controller" to register the RTC as a
power-off handler.

Some RTC IP revisions can control an external PMIC via the pmic_power_en
pin, which can be configured to transition to OFF on ALARM2 events and
back to ON on subsequent ALARM (wakealarm) events.

This is based on earlier work by Colin Foe-Parker and AnilKumar Ch. [1]

[1] https://www.mail-archive.com/linux-omap@vger.kernel.org/msg82127.html

[akpm@linux-foundation.org: add comment]
Signed-off-by: Johan Hovold <johan@kernel.org>
Cc: Colin Foe-Parker <colin.foeparker@logicpd.com>
Cc: AnilKumar Ch <anilkumar@ti.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Benot Cousson <bcousson@baylibre.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Keerthy J <j-keerthy@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-12-10 17:41:14 -08:00
Prarit Bhargava
9e3961a097 kernel: add panic_on_warn 
There have been several times where I have had to rebuild a kernel to
cause a panic when hitting a WARN() in the code in order to get a crash
dump from a system.  Sometimes this is easy to do, other times (such as
in the case of a remote admin) it is not trivial to send new images to
the user.

A much easier method would be a switch to change the WARN() over to a
panic.  This makes debugging easier in that I can now test the actual
image the WARN() was seen on and I do not have to engage in remote
debugging.

This patch adds a panic_on_warn kernel parameter and
/proc/sys/kernel/panic_on_warn calls panic() in the
warn_slowpath_common() path.  The function will still print out the
location of the warning.

An example of the panic_on_warn output:

The first line below is from the WARN_ON() to output the WARN_ON()'s
location.  After that the panic() output is displayed.

    WARNING: CPU: 30 PID: 11698 at /home/prarit/dummy_module/dummy-module.c:25 init_dummy+0x1f/0x30 [dummy_module]()
    Kernel panic - not syncing: panic_on_warn set ...

    CPU: 30 PID: 11698 Comm: insmod Tainted: G        W  OE  3.17.0+ #57
    Hardware name: Intel Corporation S2600CP/S2600CP, BIOS RMLSDP.86I.00.29.D696.1311111329 11/11/2013
     0000000000000000 000000008e3f87df ffff88080f093c38 ffffffff81665190
     0000000000000000 ffffffff818aea3d ffff88080f093cb8 ffffffff8165e2ec
     ffffffff00000008 ffff88080f093cc8 ffff88080f093c68 000000008e3f87df
    Call Trace:
     [<ffffffff81665190>] dump_stack+0x46/0x58
     [<ffffffff8165e2ec>] panic+0xd0/0x204
     [<ffffffffa038e05f>] ? init_dummy+0x1f/0x30 [dummy_module]
     [<ffffffff81076b90>] warn_slowpath_common+0xd0/0xd0
     [<ffffffffa038e040>] ? dummy_greetings+0x40/0x40 [dummy_module]
     [<ffffffff81076c8a>] warn_slowpath_null+0x1a/0x20
     [<ffffffffa038e05f>] init_dummy+0x1f/0x30 [dummy_module]
     [<ffffffff81002144>] do_one_initcall+0xd4/0x210
     [<ffffffff811b52c2>] ? __vunmap+0xc2/0x110
     [<ffffffff810f8889>] load_module+0x16a9/0x1b30
     [<ffffffff810f3d30>] ? store_uevent+0x70/0x70
     [<ffffffff810f49b9>] ? copy_module_from_fd.isra.44+0x129/0x180
     [<ffffffff810f8ec6>] SyS_finit_module+0xa6/0xd0
     [<ffffffff8166cf29>] system_call_fastpath+0x12/0x17

Successfully tested by me.

hpa said: There is another very valid use for this: many operators would
rather a machine shuts down than being potentially compromised either
functionally or security-wise.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-12-10 17:41:10 -08:00
Johannes Weiner
1306a85aed mm: embed the memcg pointer directly into struct page 
Memory cgroups used to have 5 per-page pointers.  To allow users to
disable that amount of overhead during runtime, those pointers were
allocated in a separate array, with a translation layer between them and
struct page.

There is now only one page pointer remaining: the memcg pointer, that
indicates which cgroup the page is associated with when charged.  The
complexity of runtime allocation and the runtime translation overhead is
no longer justified to save that *potential* 0.19% of memory.  With
CONFIG_SLUB, page->mem_cgroup actually sits in the doubleword padding
after the page->private member and doesn't even increase struct page,
and then this patch actually saves space.  Remaining users that care can
still compile their kernels without CONFIG_MEMCG.

     text    data     bss     dec     hex     filename
  8828345 1725264  983040 11536649 b00909  vmlinux.old
  8827425 1725264  966656 11519345 afc571  vmlinux.new

[mhocko@suse.cz: update Documentation/cgroups/memory.txt]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Vladimir Davydov <vdavydov@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-12-10 17:41:09 -08:00
Johannes Weiner
5b1efc027c kernel: res_counter: remove the unused API 
All memory accounting and limiting has been switched over to the
lockless page counters.  Bye, res_counter!

[akpm@linux-foundation.org: update Documentation/cgroups/memory.txt]
[mhocko@suse.cz: ditch the last remainings of res_counter]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-12-10 17:41:04 -08:00
Johannes Weiner
71f87bee38 mm: hugetlb_cgroup: convert to lockless page counters 
Abandon the spinlock-protected byte counters in favor of the unlocked
page counters in the hugetlb controller as well.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Tejun Heo <tj@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>
 2014-12-10 17:41:04 -08:00
Johannes Weiner
3e32cb2e0a mm: memcontrol: lockless page counters 
Memory is internally accounted in bytes, using spinlock-protected 64-bit
counters, even though the smallest accounting delta is a page.  The
counter interface is also convoluted and does too many things.

Introduce a new lockless word-sized page counter API, then change all
memory accounting over to it.  The translation from and to bytes then only
happens when interfacing with userspace.

The removed locking overhead is noticable when scaling beyond the per-cpu
charge caches - on a 4-socket machine with 144-threads, the following test
shows the performance differences of 288 memcgs concurrently running a
page fault benchmark:

vanilla:

   18631648.500498      task-clock (msec)         #  140.643 CPUs utilized            ( +-  0.33% )
         1,380,638      context-switches          #    0.074 K/sec                    ( +-  0.75% )
            24,390      cpu-migrations            #    0.001 K/sec                    ( +-  8.44% )
     1,843,305,768      page-faults               #    0.099 M/sec                    ( +-  0.00% )
50,134,994,088,218      cycles                    #    2.691 GHz                      ( +-  0.33% )
   <not supported>      stalled-cycles-frontend
   <not supported>      stalled-cycles-backend
 8,049,712,224,651      instructions              #    0.16  insns per cycle          ( +-  0.04% )
 1,586,970,584,979      branches                  #   85.176 M/sec                    ( +-  0.05% )
     1,724,989,949      branch-misses             #    0.11% of all branches          ( +-  0.48% )

     132.474343877 seconds time elapsed                                          ( +-  0.21% )

lockless:

   12195979.037525      task-clock (msec)         #  133.480 CPUs utilized            ( +-  0.18% )
           832,850      context-switches          #    0.068 K/sec                    ( +-  0.54% )
            15,624      cpu-migrations            #    0.001 K/sec                    ( +- 10.17% )
     1,843,304,774      page-faults               #    0.151 M/sec                    ( +-  0.00% )
32,811,216,801,141      cycles                    #    2.690 GHz                      ( +-  0.18% )
   <not supported>      stalled-cycles-frontend
   <not supported>      stalled-cycles-backend
 9,999,265,091,727      instructions              #    0.30  insns per cycle          ( +-  0.10% )
 2,076,759,325,203      branches                  #  170.282 M/sec                    ( +-  0.12% )
     1,656,917,214      branch-misses             #    0.08% of all branches          ( +-  0.55% )

      91.369330729 seconds time elapsed                                          ( +-  0.45% )

On top of improved scalability, this also gets rid of the icky long long
types in the very heart of memcg, which is great for 32 bit and also makes
the code a lot more readable.

Notable differences between the old and new API:

- res_counter_charge() and res_counter_charge_nofail() become
  page_counter_try_charge() and page_counter_charge() resp. to match
  the more common kernel naming scheme of try_do()/do()

- res_counter_uncharge_until() is only ever used to cancel a local
  counter and never to uncharge bigger segments of a hierarchy, so
  it's replaced by the simpler page_counter_cancel()

- res_counter_set_limit() is replaced by page_counter_limit(), which
  expects its callers to serialize against themselves

- res_counter_memparse_write_strategy() is replaced by
  page_counter_limit(), which rounds down to the nearest page size -
  rather than up.  This is more reasonable for explicitely requested
  hard upper limits.

- to keep charging light-weight, page_counter_try_charge() charges
  speculatively, only to roll back if the result exceeds the limit.
  Because of this, a failing bigger charge can temporarily lock out
  smaller charges that would otherwise succeed.  The error is bounded
  to the difference between the smallest and the biggest possible
  charge size, so for memcg, this means that a failing THP charge can
  send base page charges into reclaim upto 2MB (4MB) before the limit
  would have been reached.  This should be acceptable.

[akpm@linux-foundation.org: add includes for WARN_ON_ONCE and memparse]
[akpm@linux-foundation.org: add includes for WARN_ON_ONCE, memparse, strncmp, and PAGE_SIZE]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 2014-12-10 17:41:04 -08:00
Linus Torvalds
3eb5b893eb Merge branch 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 MPX support from Thomas Gleixner:
 "This enables support for x86 MPX.

  MPX is a new debug feature for bound checking in user space.  It
  requires kernel support to handle the bound tables and decode the
  bound violating instruction in the trap handler"

* 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  asm-generic: Remove asm-generic arch_bprm_mm_init()
  mm: Make arch_unmap()/bprm_mm_init() available to all architectures
  x86: Cleanly separate use of asm-generic/mm_hooks.h
  x86 mpx: Change return type of get_reg_offset()
  fs: Do not include mpx.h in exec.c
  x86, mpx: Add documentation on Intel MPX
  x86, mpx: Cleanup unused bound tables
  x86, mpx: On-demand kernel allocation of bounds tables
  x86, mpx: Decode MPX instruction to get bound violation information
  x86, mpx: Add MPX-specific mmap interface
  x86, mpx: Introduce VM_MPX to indicate that a VMA is MPX specific
  x86, mpx: Add MPX to disabled features
  ia64: Sync struct siginfo with general version
  mips: Sync struct siginfo with general version
  mpx: Extend siginfo structure to include bound violation information
  x86, mpx: Rename cfg_reg_u and status_reg
  x86: mpx: Give bndX registers actual names
  x86: Remove arbitrary instruction size limit in instruction decoder
 2014-12-10 09:34:43 -08:00
Linus Torvalds
9e66645d72 Merge branch 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull irq domain updates from Thomas Gleixner:
 "The real interesting irq updates:

   - Support for hierarchical irq domains:

     For complex interrupt routing scenarios where more than one
     interrupt related chip is involved we had no proper representation
     in the generic interrupt infrastructure so far.  That made people
     implement rather ugly constructs in their nested irq chip
     implementations.  The main offenders are x86 and arm/gic.

     To distangle that mess we have now hierarchical irqdomains which
     seperate the various interrupt chips and connect them via the
     hierarchical domains.  That keeps the domain specific details
     internal to the particular hierarchy level and removes the
     criss/cross referencing of chip internals.  The resulting hierarchy
     for a complex x86 system will look like this:

        vector          mapped: 74
          msi-0         mapped: 2
          dmar-ir-1     mapped: 69
            ioapic-1    mapped: 4
            ioapic-0    mapped: 20
            pci-msi-2   mapped: 45
          dmar-ir-0     mapped: 3
            ioapic-2    mapped: 1
            pci-msi-1   mapped: 2
          htirq         mapped: 0

     Neither ioapic nor pci-msi know about the dmar interrupt remapping
     between themself and the vector domain.  If interrupt remapping is
     disabled ioapic and pci-msi become direct childs of the vector
     domain.

     In hindsight we should have done that years ago, but in hindsight
     we always know better :)

   - Support for generic MSI interrupt domain handling

     We have more and more non PCI related MSI interrupts, so providing
     a generic infrastructure for this is better than having all
     affected architectures implementing their own private hacks.

   - Support for PCI-MSI interrupt domain handling, based on the generic
     MSI support.

     This part carries the pci/msi branch from Bjorn Helgaas pci tree to
     avoid a massive conflict.  The PCI/MSI parts are acked by Bjorn.

  I have two more branches on top of this.  The full conversion of x86
  to hierarchical domains and a partial conversion of arm/gic"

* 'irq-irqdomain-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
  genirq: Move irq_chip_write_msi_msg() helper to core
  PCI/MSI: Allow an msi_controller to be associated to an irq domain
  PCI/MSI: Provide mechanism to alloc/free MSI/MSIX interrupt from irqdomain
  PCI/MSI: Enhance core to support hierarchy irqdomain
  PCI/MSI: Move cached entry functions to irq core
  genirq: Provide default callbacks for msi_domain_ops
  genirq: Introduce msi_domain_alloc/free_irqs()
  asm-generic: Add msi.h
  genirq: Add generic msi irq domain support
  genirq: Introduce callback irq_chip.irq_write_msi_msg
  genirq: Work around __irq_set_handler vs stacked domains ordering issues
  irqdomain: Introduce helper function irq_domain_add_hierarchy()
  irqdomain: Implement a method to automatically call parent domains alloc/free
  genirq: Introduce helper irq_domain_set_info() to reduce duplicated code
  genirq: Split out flow handler typedefs into seperate header file
  genirq: Add IRQ_SET_MASK_OK_DONE to support stacked irqchip
  genirq: Introduce irq_chip.irq_compose_msi_msg() to support stacked irqchip
  genirq: Add more helper functions to support stacked irq_chip
  genirq: Introduce helper functions to support stacked irq_chip
  irqdomain: Do irq_find_mapping and set_type for hierarchy irqdomain in case OF
  ...
 2014-12-10 09:01:01 -08:00
Linus Torvalds
ecb50f0afd Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull irq core updates from Thomas Gleixner:
 "This is the first (boring) part of irq updates:

   - support for big endian I/O accessors in the generic irq chip

   - cleanup of brcmstb/bcm7120 drivers so they can be reused for non
     ARM SoCs

   - the usual pile of fixes and updates for the various ARM irq chips"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
  irqchip: dw-apb-ictl: Add PM support
  irqchip: dw-apb-ictl: Enable IRQ_GC_MASK_CACHE_PER_TYPE
  irqchip: dw-apb-ictl: Always use use {readl|writel}_relaxed
  ARM: orion: convert the irq_reg_{readl,writel} calls to the new API
  irqchip: atmel-aic: Add missing entry for rm9200 irq fixups
  irqchip: atmel-aic: Rename at91sam9_aic_irq_fixup for naming consistency
  irqchip: atmel-aic: Add specific irq fixup function for sam9g45 and sam9rl
  irqchip: atmel-aic: Add irq fixups for at91sam926x SoCs
  irqchip: atmel-aic: Add irq fixup for RTT block
  irqchip: brcmstb-l2: Convert driver to use irq_reg_{readl,writel}
  irqchip: bcm7120-l2: Convert driver to use irq_reg_{readl,writel}
  irqchip: bcm7120-l2: Decouple driver from brcmstb-l2
  irqchip: bcm7120-l2: Extend driver to support 64+ bit controllers
  irqchip: bcm7120-l2: Use gc->mask_cache to simplify suspend/resume functions
  irqchip: bcm7120-l2: Fix missing nibble in gc->unused mask
  irqchip: bcm7120-l2: Make sure all register accesses use base+offset
  irqchip: bcm7120-l2, brcmstb-l2: Remove ARM Kconfig dependency
  irqchip: bcm7120-l2: Eliminate bad IRQ check
  irqchip: brcmstb-l2: Eliminate dependency on ARM code
  genirq: Generic chip: Add big endian I/O accessors
  ...
 2014-12-10 08:38:57 -08:00
Linus Torvalds
a157508c97 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull timer core updates from Thomas Gleixner:
 "The time(r) departement provides:

   - more infrastructure work on the year 2038 issue

   - a few fixes in the Armada SoC timers

   - the usual pile of fixlets and improvements"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: armada-370-xp: Use the reference clock on A375 SoC
  watchdog: orion: Use the reference clock on Armada 375 SoC
  clocksource: armada-370-xp: Add missing clock enable
  time: Fix sign bug in NTP mult overflow warning
  time: Remove timekeeping_inject_sleeptime()
  rtc: Update suspend/resume timing to use 64bit time
  rtc/lib: Provide y2038 safe rtc_tm_to_time()/rtc_time_to_tm() replacement
  time: Fixup comments to reflect usage of timespec64
  time: Expose get_monotonic_coarse64() for in-kernel uses
  time: Expose getrawmonotonic64 for in-kernel uses
  time: Provide y2038 safe mktime() replacement
  time: Provide y2038 safe timekeeping_inject_sleeptime() replacement
  time: Provide y2038 safe do_settimeofday() replacement
  time: Complete NTP adjustment threshold judging conditions
  time: Avoid possible NTP adjustment mult overflow.
  time: Rename udelay_test.c to test_udelay.c
  clocksource: sirf: Remove hard-coded clock rate
 2014-12-10 08:18:32 -08:00
Linus Torvalds
c30110608c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull RCU updates from Ingo Molnar:
 "These are the main changes in this cycle:

    - Streamline RCU's use of per-CPU variables, shifting from "cpu"
      arguments to functions to "this_"-style per-CPU variable
      accessors.

    - signal-handling RCU updates.

    - real-time updates.

    - torture-test updates.

    - miscellaneous fixes.

    - documentation updates"

* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  rcu: Fix FIXME in rcu_tasks_kthread()
  rcu: More info about potential deadlocks with rcu_read_unlock()
  rcu: Optimize cond_resched_rcu_qs()
  rcu: Add sparse check for RCU_INIT_POINTER()
  documentation: memory-barriers.txt: Correct example for reorderings
  documentation: Add atomic_long_t to atomic_ops.txt
  documentation: Additional restriction for control dependencies
  documentation: Document RCU self test boot params
  rcutorture: Fix rcu_torture_cbflood() memory leak
  rcutorture: Remove obsolete kversion param in kvm.sh
  rcutorture: Remove stale test configurations
  rcutorture: Enable RCU self test in configs
  rcutorture: Add early boot self tests
  torture: Run Linux-kernel binary out of results directory
  cpu: Avoid puts_pending overflow
  rcu: Remove "cpu" argument to rcu_cleanup_after_idle()
  rcu: Remove "cpu" argument to rcu_prepare_for_idle()
  rcu: Remove "cpu" argument to rcu_needs_cpu()
  rcu: Remove "cpu" argument to rcu_note_context_switch()
  rcu: Remove "cpu" argument to rcu_preempt_check_callbacks()
  ...
 2014-12-09 20:23:19 -08:00
Linus Torvalds
9c37f95936 Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull locking tree changes from Ingo Molnar:
 "Two changes: a documentation update and a ticket locks live lock fix"

* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ticketlock: Fix spin_unlock_wait() livelock
  locking/lglocks: Add documentation of current lglocks implementation
 2014-12-09 19:59:22 -08:00
Linus Torvalds
a0e4467726 asm-generic: asm/io.h rewrite 
While there normally is no reason to have a pull request for asm-generic
 but have all changes get merged through whichever tree needs them, I do
 have a series for 3.19. There are two sets of patches that change
 significant portions of asm/io.h, and this branch contains both in order
 to resolve the conflicts:
 
 - Will Deacon has done a set of patches to ensure that all architectures
   define {read,write}{b,w,l,q}_relaxed() functions or get them by
   including asm-generic/io.h. These functions are commonly used on ARM
   specific drivers to avoid expensive L2 cache synchronization implied by
   the normal {read,write}{b,w,l,q}, but we need to define them on all
   architectures in order to share the drivers across architectures and
   to enable CONFIG_COMPILE_TEST configurations for them
 
 - Thierry Reding has done an unrelated set of patches that extends
   the asm-generic/io.h file to the degree necessary to make it useful
   on ARM64 and potentially other architectures.
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Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic asm/io.h rewrite from Arnd Bergmann:
 "While there normally is no reason to have a pull request for
  asm-generic but have all changes get merged through whichever tree
  needs them, I do have a series for 3.19.

  There are two sets of patches that change significant portions of
  asm/io.h, and this branch contains both in order to resolve the
  conflicts:

   - Will Deacon has done a set of patches to ensure that all
     architectures define {read,write}{b,w,l,q}_relaxed() functions or
     get them by including asm-generic/io.h.

     These functions are commonly used on ARM specific drivers to avoid
     expensive L2 cache synchronization implied by the normal
     {read,write}{b,w,l,q}, but we need to define them on all
     architectures in order to share the drivers across architectures
     and to enable CONFIG_COMPILE_TEST configurations for them

   - Thierry Reding has done an unrelated set of patches that extends
     the asm-generic/io.h file to the degree necessary to make it useful
     on ARM64 and potentially other architectures"

* tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (29 commits)
  ARM64: use GENERIC_PCI_IOMAP
  sparc: io: remove duplicate relaxed accessors on sparc32
  ARM: sa11x0: Use void __iomem * in MMIO accessors
  arm64: Use include/asm-generic/io.h
  ARM: Use include/asm-generic/io.h
  asm-generic/io.h: Implement generic {read,write}s*()
  asm-generic/io.h: Reconcile I/O accessor overrides
  /dev/mem: Use more consistent data types
  Change xlate_dev_{kmem,mem}_ptr() prototypes
  ARM: ixp4xx: Properly override I/O accessors
  ARM: ixp4xx: Fix build with IXP4XX_INDIRECT_PCI
  ARM: ebsa110: Properly override I/O accessors
  ARC: Remove redundant PCI_IOBASE declaration
  documentation: memory-barriers: clarify relaxed io accessor semantics
  x86: io: implement dummy relaxed accessor macros for writes
  tile: io: implement dummy relaxed accessor macros for writes
  sparc: io: implement dummy relaxed accessor macros for writes
  powerpc: io: implement dummy relaxed accessor macros for writes
  parisc: io: implement dummy relaxed accessor macros for writes
  mn10300: io: implement dummy relaxed accessor macros for writes
  ...
 2014-12-09 17:25:00 -08:00
Linus Torvalds
6da314122d ARM: SoC DT updates for 3.19 
The DT branch adds a lot of new stuff for additional SoC and board
 support. The branch is the largest one and contains 513 out of the
 total 972 non-merge arm-soc changesets for 3.19.
 
 Most of the changes are about enabling additional on-chip devices for
 existing machines, but there are also an unusual number of new SoC
 types being added this time:
 
 * AMLogic Meson8
 * ARM Realview in DT mode
 * Allwinner A80
 * Broadcom BCM47081
 * Broadcom Cygnus
 * Freescale LS1021A
 * Freescale Vybrid 500 series
 * Mediatek MT6592, MT8127, MT8135
 * STMicroelectronics STiH410
 * Samsung Exynos4415
 
 The level of support for the above differs widely, some are just
 stubs with nothing more than CPU, memory and a UART, but others
 are fairly complete. As usual, these get extended over time.
 
 There are also many new boards getting added, this is the
 list of model strings that are showing up in new dts files:
 
 * ARM RealView PB1176
 * Altera SOCFPGA Arria 10
 * Asus RT-N18U (BCM47081)
 * Buffalo WZR-1750DHP (BCM4708)
 * Buffalo WZR-600DHP2 (BCM47081)
 * Cygnus Enterprise Phone (BCM911360_ENTPHN)
 * D-Link DIR-665
 * Google Spring
 * IGEP COM MODULE Rev. G (TI OMAP AM/DM37x)
 * IGEPv2 Rev. F (TI OMAP AM/DM37x)
 * LS1021A QDS Board
 * LS1021A TWR Board
 * LeMaker Banana Pi
 * MarsBoard RK3066
 * MediaTek MT8127 Moose Board
 * MediaTek MT8135 evaluation board
 * Mele M3
 * Merrii A80 Optimus Board
 * Netgear R6300 V2 (BCM4708)
 * Nomadik STN8815NHK
 * NovaTech OrionLXm
 * Olimex A20-OLinuXino-LIME2
 * Raspberry Pi Model B+
 * STiH410 B2120
 * Samsung Monk board
 * Samsung Rinato board
 * Synology DS213j
 * Synology DS414
 * TBS2910 Matrix ARM mini PC
 * TI AM5728 BeagleBoard-X15
 * Toradex Colibri VF50 on Colibri Evaluation Board
 * Zynq ZYBO Development Board
 
 Other notable changes include:
 
 * exynos: cleanup of existing dts files
 * mvebu: improved pinctrl support for Armada 370/XP
 * nomadik: restructuring dts files
 * omap: added CAN bus support
 * shmobile: added clock support for some SoCs
 * shmobile: added sound support for some SoCs
 * sirf: reset controller support
 * sunxi: continuing the relicensing under dual GPL/MIT
 * sunxi: lots of new on-chip device support
 * sunxi: working simplefb support (long awaited)
 * various: provide stdout-path property for earlycon
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Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC DT updates from Arnd Bergmann:
 "The DT branch adds a lot of new stuff for additional SoC and board
  support.  The branch is the largest one and contains 513 out of the
  total 972 non-merge arm-soc changesets for 3.19.

  Most of the changes are about enabling additional on-chip devices for
  existing machines, but there are also an unusual number of new SoC
  types being added this time:

   - AMLogic Meson8
   - ARM Realview in DT mode
   - Allwinner A80
   - Broadcom BCM47081
   - Broadcom Cygnus
   - Freescale LS1021A
   - Freescale Vybrid 500 series
   - Mediatek MT6592, MT8127, MT8135
   - STMicroelectronics STiH410
   - Samsung Exynos4415

  The level of support for the above differs widely, some are just stubs
  with nothing more than CPU, memory and a UART, but others are fairly
  complete.  As usual, these get extended over time.

  There are also many new boards getting added, this is the list of
  model strings that are showing up in new dts files:

   - ARM RealView PB1176
   - Altera SOCFPGA Arria 10
   - Asus RT-N18U (BCM47081)
   - Buffalo WZR-1750DHP (BCM4708)
   - Buffalo WZR-600DHP2 (BCM47081)
   - Cygnus Enterprise Phone (BCM911360_ENTPHN)
   - D-Link DIR-665
   - Google Spring
   - IGEP COM MODULE Rev. G (TI OMAP AM/DM37x)
   - IGEPv2 Rev. F (TI OMAP AM/DM37x)
   - LS1021A QDS Board
   - LS1021A TWR Board
   - LeMaker Banana Pi
   - MarsBoard RK3066
   - MediaTek MT8127 Moose Board
   - MediaTek MT8135 evaluation board
   - Mele M3
   - Merrii A80 Optimus Board
   - Netgear R6300 V2 (BCM4708)
   - Nomadik STN8815NHK
   - NovaTech OrionLXm
   - Olimex A20-OLinuXino-LIME2
   - Raspberry Pi Model B+
   - STiH410 B2120
   - Samsung Monk board
   - Samsung Rinato board
   - Synology DS213j
   - Synology DS414
   - TBS2910 Matrix ARM mini PC
   - TI AM5728 BeagleBoard-X15
   - Toradex Colibri VF50 on Colibri Evaluation Board
   - Zynq ZYBO Development Board

  Other notable changes include:

   - exynos: cleanup of existing dts files
   - mvebu: improved pinctrl support for Armada 370/XP
   - nomadik: restructuring dts files
   - omap: added CAN bus support
   - shmobile: added clock support for some SoCs
   - shmobile: added sound support for some SoCs
   - sirf: reset controller support
   - sunxi: continuing the relicensing under dual GPL/MIT
   - sunxi: lots of new on-chip device support
   - sunxi: working simplefb support (long awaited)
   - various: provide stdout-path property for earlycon"

* tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (510 commits)
  ARM: dts: rk3288: add arm,cpu-registers-not-fw-configured
  Revert "ARM: dts: rockchip: temporarily disable smp on rk3288"
  ARM: BCM5301X: Add DT for Buffalo WZR-600DHP2
  ARM: BCM5301X: Add DT for Asus RT-N18U
  ARM: BCM5301X: Add DT for Buffalo WZR-1750DHP
  ARM: BCM5301X: Add DT for Netgear R6300 V2
  ARM: BCM5301X: Add buttons for Netgear R6250
  ARM: dts: rockchip: Add input voltage supply regulators in pmic for Marsboard
  ARM: BCM5301X: Add IRQs to Broadcom's bus-axi in DTS file
  arm: dts: zynq: Add Digilent ZYBO board
  arm: dts: zynq: Move crystal freq. to board level
  doc: dt: vendor-prefixes: Add Digilent Inc
  Documentation: devicetree: Fix Xilinx VDMA specification
  ARM: dts: rockchip: set FIFO size for SDMMC, SDIO and EMMC on rk3066 and rk3188
  ARM: dts: rockchip: add label property for leds on Radxa Rock
  ARM: BCM5301X: Add LEDs for Netgear R6250 V1
  ARM: BCM5301X: Add Broadcom's bus-axi to the DTS file
  ARM: dts: add sysreg phandle to i2c device nodes for exynos
  ARM: dts: Remove unused bootargs from exynos3250-rinato
  ARM: dts: add board dts file for Exynos3250-based Monk board
  ...
 2014-12-09 14:57:37 -08:00
Linus Torvalds
3a647c1d7a ARM: SoC driver updates for 3.19 
These are changes for drivers that are intimately tied to some SoC
 and for some reason could not get merged through the respective
 subsystem maintainer tree.
 
 The largest single change here this time around is the Tegra
 iommu/memory controller driver, which gets updated to the new
 iommu DT binding. More drivers like this are likely to follow
 for the following merge window, but we should be able to do
 those through the iommu maintainer.
 
 Other notable changes are:
 * reset controller drivers from the reset maintainer (socfpga, sti, berlin)
 * fixes for the keystone navigator driver merged last time
 * at91 rtc driver changes related to the at91 cleanups
 * ARM perf driver changes from Will Deacon
 * updates for the brcmstb_gisb driver
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Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are changes for drivers that are intimately tied to some SoC and
  for some reason could not get merged through the respective subsystem
  maintainer tree.

  The largest single change here this time around is the Tegra
  iommu/memory controller driver, which gets updated to the new iommu DT
  binding.  More drivers like this are likely to follow for the
  following merge window, but we should be able to do those through the
  iommu maintainer.

  Other notable changes are:
   - reset controller drivers from the reset maintainer (socfpga, sti,
     berlin)
   - fixes for the keystone navigator driver merged last time
   - at91 rtc driver changes related to the at91 cleanups
   - ARM perf driver changes from Will Deacon
   - updates for the brcmstb_gisb driver"

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (53 commits)
  clocksource: arch_timer: Allow the device tree to specify uninitialized timer registers
  clocksource: arch_timer: Fix code to use physical timers when requested
  memory: Add NVIDIA Tegra memory controller support
  bus: brcmstb_gisb: Add register offset tables for older chips
  bus: brcmstb_gisb: Look up register offsets in a table
  bus: brcmstb_gisb: Introduce wrapper functions for MMIO accesses
  bus: brcmstb_gisb: Make the driver buildable on MIPS
  of: Add NVIDIA Tegra memory controller binding
  ARM: tegra: Move AHB Kconfig to drivers/amba
  amba: Add Kconfig file
  clk: tegra: Implement memory-controller clock
  serial: samsung: Fix serial config dependencies for exynos7
  bus: brcmstb_gisb: resolve section mismatch
  ARM: common: edma: edma_pm_resume may be unused
  ARM: common: edma: add suspend resume hook
  powerpc/iommu: Rename iommu_[un]map_sg functions
  rtc: at91sam9: add DT bindings documentation
  rtc: at91sam9: use clk API instead of relying on AT91_SLOW_CLOCK
  ARM: at91: add clk_lookup entry for RTT devices
  rtc: at91sam9: rework the Kconfig description
  ...
 2014-12-09 14:48:22 -08:00
Linus Torvalds
6cd94d5e57 ARM: SoC platform changes for 3.19 
New and updated SoC support, notable changes include:
 
 * bcm: brcmstb SMP support
 * bcm: initial iproc/cygnus support
 * exynos: Exynos4415 SoC support
 * exynos: PMU and suspend support for Exynos5420
 * exynos: PMU support for Exynos3250
 * exynos: pm related maintenance
 * imx: new LS1021A SoC support
 * imx: vybrid 610 global timer support
 * integrator: convert to using multiplatform configuration
 * mediatek: earlyprintk support for mt8127/mt8135
 * meson: meson8 soc and l2 cache controller support
 * mvebu: Armada 38x CPU hotplug support
 * mvebu: drop support for prerelease Armada 375 Z1 stepping
 * mvebu: extended suspend support, now works on Armada 370/XP
 * omap: hwmod related maintenance
 * omap: prcm cleanup
 * pxa: initial pxa27x DT handling
 * rockchip: SMP support for rk3288
 * rockchip: add cpu frequency scaling support
 * shmobile: r8a7740 power domain support
 * shmobile: various small restart, timer, pci apmu changes
 * sunxi: Allwinner A80 (sun9i) earlyprintk support
 * ux500: power domain support
 
 Overall, a significant chunk of changes, coming mostly from
 the usual suspects: omap, shmobile, samsung and mvebu, all of
 which already contain a lot of platform specific code in
 arch/arm.
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Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform changes from Arnd Bergmann:
 "New and updated SoC support, notable changes include:

   - bcm:
        brcmstb SMP support
        initial iproc/cygnus support
   - exynos:
        Exynos4415 SoC support
        PMU and suspend support for Exynos5420
        PMU support for Exynos3250
        pm related maintenance
   - imx:
        new LS1021A SoC support
        vybrid 610 global timer support
   - integrator:
        convert to using multiplatform configuration
   - mediatek:
        earlyprintk support for mt8127/mt8135
   - meson:
        meson8 soc and l2 cache controller support
   - mvebu:
        Armada 38x CPU hotplug support
        drop support for prerelease Armada 375 Z1 stepping
        extended suspend support, now works on Armada 370/XP
   - omap:
        hwmod related maintenance
        prcm cleanup
   - pxa:
        initial pxa27x DT handling
   - rockchip:
        SMP support for rk3288
        add cpu frequency scaling support
   - shmobile:
        r8a7740 power domain support
        various small restart, timer, pci apmu changes
   - sunxi:
        Allwinner A80 (sun9i) earlyprintk support
   - ux500:
        power domain support

  Overall, a significant chunk of changes, coming mostly from the usual
  suspects: omap, shmobile, samsung and mvebu, all of which already
  contain a lot of platform specific code in arch/arm"

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (187 commits)
  ARM: mvebu: use the cpufreq-dt platform_data for independent clocks
  soc: integrator: Add terminating entry for integrator_cm_match
  ARM: mvebu: add SDRAM controller description for Armada XP
  ARM: mvebu: adjust mbus controller description on Armada 370/XP
  ARM: mvebu: add suspend/resume DT information for Armada XP GP
  ARM: mvebu: synchronize secondary CPU clocks on resume
  ARM: mvebu: make sure MMU is disabled in armada_370_xp_cpu_resume
  ARM: mvebu: Armada XP GP specific suspend/resume code
  ARM: mvebu: reserve the first 10 KB of each memory bank for suspend/resume
  ARM: mvebu: implement suspend/resume support for Armada XP
  clk: mvebu: add suspend/resume for gatable clocks
  bus: mvebu-mbus: provide a mechanism to save SDRAM window configuration
  bus: mvebu-mbus: suspend/resume support
  clocksource: time-armada-370-xp: add suspend/resume support
  irqchip: armada-370-xp: Add suspend/resume support
  ARM: add lolevel debug support for asm9260
  ARM: add mach-asm9260
  ARM: EXYNOS: use u8 for val[] in struct exynos_pmu_conf
  power: reset: imx-snvs-poweroff: add power off driver for i.mx6
  ARM: imx: temporarily remove CONFIG_SOC_FSL from LS1021A
  ...
 2014-12-09 14:38:28 -08:00
Linus Torvalds
b64bb1d758 arm64 updates for 3.19 
Changes include:
  - Support for alternative instruction patching from Andre
  - seccomp from Akashi
  - Some AArch32 instruction emulation, required by the Android folks
  - Optimisations for exception entry/exit code, cmpxchg, pcpu atomics
  - mmu_gather range calculations moved into core code
  - EFI updates from Ard, including long-awaited SMBIOS support
  - /proc/cpuinfo fixes to align with the format used by arch/arm/
  - A few non-critical fixes across the architecture
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "Here's the usual mixed bag of arm64 updates, also including some
  related EFI changes (Acked by Matt) and the MMU gather range cleanup
  (Acked by you).

  Changes include:
   - support for alternative instruction patching from Andre
   - seccomp from Akashi
   - some AArch32 instruction emulation, required by the Android folks
   - optimisations for exception entry/exit code, cmpxchg, pcpu atomics
   - mmu_gather range calculations moved into core code
   - EFI updates from Ard, including long-awaited SMBIOS support
   - /proc/cpuinfo fixes to align with the format used by arch/arm/
   - a few non-critical fixes across the architecture"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (70 commits)
  arm64: remove the unnecessary arm64_swiotlb_init()
  arm64: add module support for alternatives fixups
  arm64: perf: Prevent wraparound during overflow
  arm64/include/asm: Fixed a warning about 'struct pt_regs'
  arm64: Provide a namespace to NCAPS
  arm64: bpf: lift restriction on last instruction
  arm64: Implement support for read-mostly sections
  arm64: compat: align cacheflush syscall with arch/arm
  arm64: add seccomp support
  arm64: add SIGSYS siginfo for compat task
  arm64: add seccomp syscall for compat task
  asm-generic: add generic seccomp.h for secure computing mode 1
  arm64: ptrace: allow tracer to skip a system call
  arm64: ptrace: add NT_ARM_SYSTEM_CALL regset
  arm64: Move some head.text functions to executable section
  arm64: jump labels: NOP out NOP -> NOP replacement
  arm64: add support to dump the kernel page tables
  arm64: Add FIX_HOLE to permanent fixed addresses
  arm64: alternatives: fix pr_fmt string for consistency
  arm64: vmlinux.lds.S: don't discard .exit.* sections at link-time
  ...
 2014-12-09 13:12:47 -08:00
Linus Torvalds
a4a26e8e92 nios2 for v3.19-rc1 
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Merge tag 'nios2-v3.19-rc1' of git://git.rocketboards.org/linux-socfpga-next

Pull Altera Nios II processor support from Ley Foon Tan:
 "Here is the Linux port for Nios II processor (from Altera) arch/nios2/
  tree for v3.19.

  The patchset has been discussed on the kernel mailing lists since
  April and has gone through 6 revisions of review.  The additional
  changes since then have been mostly further cleanups and fixes when
  merged with other trees.

  The arch code is in arch/nios2 and one asm-generic change (acked by
  Arnd)"

Arnd Bergmann says:
 "I've reviewed the architecture port in the past and it looks good in
  its latest version"

Acked-by: Arnd Bergmann <arnd@arndb.de>

* tag 'nios2-v3.19-rc1' of git://git.rocketboards.org/linux-socfpga-next: (40 commits)
  nios2: Make NIOS2_CMDLINE_IGNORE_DTB depend on CMDLINE_BOOL
  nios2: Add missing NR_CPUS to Kconfig
  nios2: asm-offsets: Remove unused definition TI_TASK
  nios2: Remove write-only struct member from nios2_timer
  nios2: Remove unused extern declaration of shm_align_mask
  nios2: include linux/type.h in io.h
  nios2: move include asm-generic/io.h to end of file
  nios2: remove include asm-generic/iomap.h from io.h
  nios2: remove unnecessary space before define
  nios2: fix error handling of irq_of_parse_and_map
  nios2: Use IS_ENABLED instead of #ifdefs to check config symbols
  nios2: Build infrastructure
  Documentation: Add documentation for Nios2 architecture
  MAINTAINERS: Add nios2 maintainer
  nios2: ptrace support
  nios2: Module support
  nios2: Nios2 registers
  nios2: Miscellaneous header files
  nios2: Cpuinfo handling
  nios2: Time keeping
  ...
 2014-12-09 12:45:41 -08:00
Linus Torvalds
f3f62a38ce SCSI for-linus on 20141208 
This patch is the usual mix of driver updates (srp, ipr, scsi_debug, NCR5380,
 fnic, 53c974, ses, wd719x, hpsa, megaraid_sas).  Of those, wd7a9x is new and
 53c974 is a rewrite of the old tmscsim driver and the extensive work by Finn
 Thain rewrites all the NCR5380 based drivers.  There's also extensive
 infrastructure updates: a new logging infrastructure for sense information and
 a rewrite of the tagged command queue API and an assortment of minor updates.
 
 Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This patch is the usual mix of driver updates (srp, ipr, scsi_debug,
  NCR5380, fnic, 53c974, ses, wd719x, hpsa, megaraid_sas).

  Of those, wd7a9x is new and 53c974 is a rewrite of the old tmscsim
  driver and the extensive work by Finn Thain rewrites all the NCR5380
  based drivers.

  There's also extensive infrastructure updates: a new logging
  infrastructure for sense information and a rewrite of the tagged
  command queue API and an assortment of minor updates"

* tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (183 commits)
  scsi: set fmt to NULL scsi_extd_sense_format() by default
  libsas: remove task_collector mode
  wd719x: remove dma_cache_sync call
  scsi_debug: add Report supported opcodes+tmfs; Compare and write
  scsi_debug: change SCSI command parser to table driven
  scsi_debug: add Capacity Changed Unit Attention
  scsi_debug: append inject error flags onto scsi_cmnd object
  scsi_debug: pinpoint invalid field in sense data
  wd719x: Add firmware documentation
  wd719x: Introduce Western Digital WD7193/7197/7296 PCI SCSI card driver
  eeprom-93cx6: Add (read-only) support for 8-bit mode
  esas2r: fix an oversight in setting return value
  esas2r: fix an error path in esas2r_ioctl_handler
  esas2r: fir error handling in do_fm_api
  scsi: add SPC-3 command definitions
  scsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16
  scsi: remove scsi_driver owner field
  scsi: move scsi_dispatch_cmd to scsi_lib.c
  scsi: stop passing a gfp_mask argument down the command setup path
  scsi: remove scsi_next_command
  ...
 2014-12-08 21:19:19 -08:00
Linus Torvalds
140dfc9299 - Significant DM thin-provisioning performance improvements to meet 
performance requirements that were requested by the Gluster
   distributed filesystem.  Specifically, dm-thinp now takes care to
   aggregate IO that will be issued to the same thinp block before
   issuing IO to the underlying devices.  This really helps improve
   performance on HW RAID6 devices that have a writeback cache because it
   avoids RMW in the HW RAID controller.
 
 - Some stable fixes: fix leak in DM bufio if integrity profiles were
   enabled, use memzero_explicit in DM crypt to avoid any potential for
   information leak, and a DM cache fix to properly mark a cache block
   dirty if it was promoted to the cache via the overwrite optimization.
 
 - A few simple DM persistent data library fixes
 
 - DM cache multiqueue policy block promotion improvements.
 
 - DM cache discard improvements that take advantage of range
   (multiblock) discard support in the DM bio-prison.  This allows for
   much more efficient bulk discard processing (e.g. when mkfs.xfs
   discards the entire device).
 
 - Some small optimizations in DM core and RCU deference cleanups
 
 - DM core changes to suspend/resume code to introduce the new internal
   suspend/resume interface that the DM thin-pool target now uses to
   suspend/resume active thin devices when the thin-pool must
   suspend/resume.  This avoids forcing userspace to track all active
   thin volumes in a thin-pool when the thin-pool is suspended for the
   purposes of metadata or data space resize.
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Merge tag 'dm-3.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Significant DM thin-provisioning performance improvements to meet
   performance requirements that were requested by the Gluster
   distributed filesystem.

   Specifically, dm-thinp now takes care to aggregate IO that will be
   issued to the same thinp block before issuing IO to the underlying
   devices.  This really helps improve performance on HW RAID6 devices
   that have a writeback cache because it avoids RMW in the HW RAID
   controller.

 - Some stable fixes: fix leak in DM bufio if integrity profiles were
   enabled, use memzero_explicit in DM crypt to avoid any potential for
   information leak, and a DM cache fix to properly mark a cache block
   dirty if it was promoted to the cache via the overwrite optimization.

 - A few simple DM persistent data library fixes

 - DM cache multiqueue policy block promotion improvements.

 - DM cache discard improvements that take advantage of range
   (multiblock) discard support in the DM bio-prison.  This allows for
   much more efficient bulk discard processing (e.g.  when mkfs.xfs
   discards the entire device).

 - Some small optimizations in DM core and RCU deference cleanups

 - DM core changes to suspend/resume code to introduce the new internal
   suspend/resume interface that the DM thin-pool target now uses to
   suspend/resume active thin devices when the thin-pool must
   suspend/resume.

   This avoids forcing userspace to track all active thin volumes in a
   thin-pool when the thin-pool is suspended for the purposes of
   metadata or data space resize.

* tag 'dm-3.19-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (49 commits)
  dm crypt: use memzero_explicit for on-stack buffer
  dm space map metadata: fix sm_bootstrap_get_count()
  dm space map metadata: fix sm_bootstrap_get_nr_blocks()
  dm bufio: fix memleak when using a dm_buffer's inline bio
  dm cache: fix spurious cell_defer when dealing with partial block at end of device
  dm cache: dirty flag was mistakenly being cleared when promoting via overwrite
  dm cache: only use overwrite optimisation for promotion when in writeback mode
  dm cache: discard block size must be a multiple of cache block size
  dm cache: fix a harmless race when working out if a block is discarded
  dm cache: when reloading a discard bitset allow for a different discard block size
  dm cache: fix some issues with the new discard range support
  dm array: if resizing the array is a noop set the new root to the old one
  dm: use rcu_dereference_protected instead of rcu_dereference
  dm thin: fix pool_io_hints to avoid looking at max_hw_sectors
  dm thin: suspend/resume active thin devices when reloading thin-pool
  dm: enhance internal suspend and resume interface
  dm thin: do not allow thin device activation while pool is suspended
  dm: add presuspend_undo hook to target_type
  dm: return earlier from dm_blk_ioctl if target doesn't implement .ioctl
  dm thin: remove stale 'trim' message in block comment above pool_message
  ...
 2014-12-08 21:10:03 -08:00
Linus Torvalds
f94784bdb1 regulator: Updates for v3.19 
The main thing this time around is support for suspend mode
 configuration from DT which will enable some very useful power savings
 on systems where we can't rely on the bootloader configuration.  We
 still don't really support dynamic configuration of this at runtime,
 that may come later if there is any demand.
 
  - Support for specifying the target regulation mode and voltage during
    system suspend via DT, enabling power savings in that mode.
  - Reduce the default verbosity of the logging on boot, improving boot
    times especially for systems with very large numbers of regulators.
  - Lots of cleanups and fixes for Maxim PMIC drivers.
  - New driver for Richtek RT5033.
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Merge tag 'regulator-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "The main thing this time around is support for suspend mode
  configuration from DT which will enable some very useful power savings
  on systems where we can't rely on the bootloader configuration.  We
  still don't really support dynamic configuration of this at runtime,
  that may come later if there is any demand.

  Summary:
   - Support for specifying the target regulation mode and voltage
     during system suspend via DT, enabling power savings in that mode.
   - Reduce the default verbosity of the logging on boot, improving boot
     times especially for systems with very large numbers of regulators.
   - Lots of cleanups and fixes for Maxim PMIC drivers.
   - New driver for Richtek RT5033"

* tag 'regulator-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (62 commits)
  regulator: core: Fix regualtor_ena_gpio_free not to access pin after freeing
  regulator: sky81452: Modify Device Tree structure
  regulator: sky81452: Modify Device Tree structure
  dt-bindings: Update documentation for "system-power-controller" and fix misspellings
  of: Rename "poweroff-source" property to "system-power-controller"
  regulator: max77686: Remove support for board files
  regulator: max77802: Remove support for board files
  regulator: max77802: Fill regulator modes translation callback
  regulator: max77802: Document binding for regulator operating modes
  regulator: of: Add support for parsing initial and suspend modes
  regulator: of: Pass the regulator description in the match table
  regulator: of: Add regulator desc param to of_get_regulator_init_data()
  regulator: Add mode mapping function to struct regulator_desc
  regulator: Document binding for initial and suspend modes
  regulator: core: Add PRE_DISABLE notification
  regulator: gpio: fix parsing of gpio list
  regulator: rpm: add support for RPM-controller SMB208
  regulator: da9063: Do not transform local IRQ to virtual
  regulator: sky81452: Modify dependent Kconfig symbol
  regulator: rt5033: Add RT5033 Regulator device driver
  ...
 2014-12-08 20:42:41 -08:00
Linus Torvalds
177808cd28 Notable changes: 
New driver for NCT7802Y
 Add support for TMP435, LM95233, LM95235, NCT6792D, and NXP LM75B
 Add regulator support for PMBus chips, specifically LTX2978
 Add support for humidity sensors to iio-hwmon bridge driver
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Merge tag 'hwmon-for-linus-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "Notable changes:
   - new driver for NCT7802Y
   - support for TMP435, LM95233, LM95235, NCT6792D, and NXP LM75B
   - regulator support for PMBus chips, specifically LTX2978
   - support for humidity sensors to iio-hwmon bridge driver

* tag 'hwmon-for-linus-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (21 commits)
  hwmon: (tmp401) Detect TMP435 on all addresses it supports
  hwmon: (lm75) Strengthen detect function
  hwmon: (gpio-fan) Add a shutdown handler to poweroff the fans
  hwmon: (gpio-fan) Allow usage of gpio operations that may sleep
  hwmon: (tmp401) Bail out from tmp401_probe() in case of write errors
  hwmon: (tmp401) Add support for TI TMP435
  hwmon: (lm95234) Add support for LM95233
  hwmon: (lm95245) Add support for LM95235
  hwmon: (ina2xx) bail-out from ina2xx_probe() in case of configuration errors
  hwmon: (nct6775) Add blank lines after declarations
  hwmon: (nct6775) Add support for NCT6792D
  hwmon: (nct6775) Documentation updates
  hwmon: (lm75) Add support for the NXP LM75B
  hwmon: Driver for Nuvoton NCT7802Y
  hwmon: (ibmpowernv) Convert to module_platform_driver
  hwmon: (ibmpowernv) Use platform 'id_table' to probe the device
  hwmon: (iio_hwmon) Add support for humidity sensors
  hwmon: (ltc2978) Add regulator support
  hwmon: (pmbus) Add regulator support
  hwmon: (pmbus) add helpers for byte write and read modify write
  ...
 2014-12-08 20:30:25 -08:00
Linus Torvalds
3a7dbed7f2 Hi Linus, 
Changes to the core:
  - Honour PLATFORM_DEVID_NONE and PLATFORM_DEVID_AUTO dev IDs
 
 Changes to existing drivers:
  - IRQ additions/fixes; axp20x, da9063-core
  - Code simplification; i2c-dln2
  - Regmap additions/fixes; max77693
  - Error checking/handling improvements; dln2, db8500-prcmu
  - Bug fixes; dln2, wm8350-core
  - DT support/documentation; max77693, max77686, tps65217, twl4030-power,
                              gpio-tc3589x
  - Decouple syscon interface from platform devices
  - Use MFD hotplug registration; rtsx_usb, viperboard, hid-sensor-hub
  - Regulator fixups; sec-core
  - Power Management additions/fixes; rts5227, tc6393xb
  - Remove relic/redundant code; ab8500-sysctrl, lpc_sch, max77693-private
  - Clean-up/coding style changes; tps65090
  - Clk additions/fixes; tc6393xb, tc6387xb, t7l66xb
  - Add USB-SPI support; dln2
  - Trivial changes; max14577, arizona-spi, lpc_sch, wm8997-tables, wm5102-tables
                     wm5110-tables, axp20x, atmel-hlcdc, rtsx_pci
 
 New drivers/supported devices:
  - axp288 PMIC support added to axp20x
  - s2mps13 support added to sec-core
  - New support for Diolan DLN-2
  - New support for atmel-hlcdc
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Merge tag 'mfd-for-linus-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "Changes to the core:
   - Honour PLATFORM_DEVID_NONE and PLATFORM_DEVID_AUTO dev IDs

  Changes to existing drivers:
   - IRQ additions/fixes; axp20x, da9063-core
   - Code simplification; i2c-dln2
   - Regmap additions/fixes; max77693
   - Error checking/handling improvements; dln2, db8500-prcmu
   - Bug fixes; dln2, wm8350-core
   - DT support/documentation; max77693, max77686, tps65217, twl4030-power,
                               gpio-tc3589x
   - Decouple syscon interface from platform devices
   - Use MFD hotplug registration; rtsx_usb, viperboard, hid-sensor-hub
   - Regulator fixups; sec-core
   - Power Management additions/fixes; rts5227, tc6393xb
   - Remove relic/redundant code; ab8500-sysctrl, lpc_sch, max77693-private
   - Clean-up/coding style changes; tps65090
   - Clk additions/fixes; tc6393xb, tc6387xb, t7l66xb
   - Add USB-SPI support; dln2
   - Trivial changes; max14577, arizona-spi, lpc_sch, wm8997-tables, wm5102-tables
                      wm5110-tables, axp20x, atmel-hlcdc, rtsx_pci

  New drivers/supported devices:
   - axp288 PMIC support added to axp20x
   - s2mps13 support added to sec-core
   - New support for Diolan DLN-2
   - New support for atmel-hlcdc"

* tag 'mfd-for-linus-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (55 commits)
  mfd: rtsx: Add func to split u32 into register
  mfd: atmel-hlcdc: Add Kconfig option description and name
  mfd: da9063: Get irq base dynamically before registering device
  mfd: max14577: Fix obvious typo in company name in copyright
  mfd: axp20x: Constify axp20x_acpi_match and rid unused warning
  mfd: t7l66xb: prepare/unprepare clocks
  mfd: tc6387xb: prepare/unprepare clocks
  mfd: dln2: add support for USB-SPI module
  mfd: wm5110: Add missing registers for AIF2 channels 3-6
  mfd: tc3589x: get rid of static base
  mfd: arizona: Document HP_CTRL_1L and HP_CTRL_1R registers
  mfd: wm8997: Mark INTERRUPT_STATUS_2_MASK as readable
  mfd: tc6393xb: Prepare/unprepare clocks
  mfd: tps65090: Fix bonkers indenting strategy
  mfd: tc6393xb: Fail ohci suspend if full state restore is required
  mfd: lpc_sch: Don't call mfd_remove_devices()
  mfd: wm8350-core: Fix probable mask then right shift defect
  mfd: ab8500-sysctrl: Drop ab8500_restart
  mfd: db8500-prcmu: Provide sane error path values
  mfd: db8500-prcmu: Check return of devm_ioremap for error
  ...
 2014-12-08 20:02:54 -08:00
Linus Torvalds
f2fb38049c MMC core: 
- Consolidation and cleanups.
 - Some improvements regarding error handling.
 - Increase maximum amount of block devices.
 - Use correct OCR mask for SDIO when restoring power.
 - Fix prepared requests while doing BKOPS.
 - Convert to modern PM ops.
 - Add mmc_send_tuning() API and convert some hosts to use it.
 
 MMC host:
 - toshsd: New Toshiba PCI SD controller driver.
 - sdhci: 64-bit ADMA support.
 - sdhci: Some regulator fixes.
 - sdhci: HS400 support.
 - sdhci: Various fixes cleanups.
 - atmel-mci: Modernization and cleanups.
 - atmel-mci: Runtime PM support.
 - omap_hsmmc: Modernization and cleanups.
 - omap_hsmmc: Fix UHS card with DDR50 support.
 - dw_mmc: Support for ARM64 and Exynos 7 variant.
 - dw_mmc: Add support for IMG Pistachio variant.
 - dw_mmc: Various fixes and cleanups.
 - mvsdio: DMA fixes.
 - mxs-mmc: Modernization and cleanups.
 - mxcmmc: Various fixes.
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Merge tag 'mmc-v3.19-1' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Consolidation and cleanups.
   - Some improvements regarding error handling.
   - Increase maximum amount of block devices.
   - Use correct OCR mask for SDIO when restoring power.
   - Fix prepared requests while doing BKOPS.
   - Convert to modern PM ops.
   - Add mmc_send_tuning() API and convert some hosts to use it.

  MMC host:
   - toshsd: New Toshiba PCI SD controller driver.
   - sdhci: 64-bit ADMA support.
   - sdhci: Some regulator fixes.
   - sdhci: HS400 support.
   - sdhci: Various fixes cleanups.
   - atmel-mci: Modernization and cleanups.
   - atmel-mci: Runtime PM support.
   - omap_hsmmc: Modernization and cleanups.
   - omap_hsmmc: Fix UHS card with DDR50 support.
   - dw_mmc: Support for ARM64 and Exynos 7 variant.
   - dw_mmc: Add support for IMG Pistachio variant.
   - dw_mmc: Various fixes and cleanups.
   - mvsdio: DMA fixes.
   - mxs-mmc: Modernization and cleanups.
   - mxcmmc: Various fixes"

* tag 'mmc-v3.19-1' of git://git.linaro.org/people/ulf.hansson/mmc: (126 commits)
  mmc: sdhci-msm: Convert to mmc_send_tuning()
  mmc: sdhci-esdhc-imx: Convert to mmc_send_tuning()
  mmc: core: Let mmc_send_tuning() to take struct mmc_host* as parameter
  mmc: queue: Improve error handling during allocation of bounce buffers
  mmc: sdhci-acpi: Add two host capabilities for Intel
  mmc: sdhci-pci: Add two host capabilities for BYT
  mmc: sdhci-acpi: Add SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC
  mmc: sdhci-pci: Add SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC to BYT
  mmc: atmel-mci: use probe deferring if dma controller is not ready yet
  mmc: atmel-mci: stop using specific initcall
  mmc: atmel-mci: remove __init/__exit attributes
  mmc: atmel-mci: remove useless DMA stuff for non-dt devices
  mmc: omap_hsmmc: Fix UHS card with DDR50 support
  mmc: core: add core-level function for sending tuning commands
  mmc: core: hold SD Clock before CMD11 during Signal
  mmc: mxs-mmc: Check for clk_prepare_enable() error
  mmc: mxs-mmc: Propagate the real error
  mmc: mxs-mmc: No need to do NULL check on 'iores'
  mmc: dw_mmc: Add support for IMG Pistachio
  mmc: mxs-mmc: Simplify PM hooks
  ...
 2014-12-08 18:42:44 -08:00
James Bottomley
096cbc35ea Merge remote-tracking branch 'scsi-queue/drivers-for-3.19' into for-linus 
Conflicts:
	drivers/scsi/scsi_debug.c

Agreed and tested resolution to a merge problem between a fix in scsi_debug
and a driver update

Signed-off-by: James Bottomley <JBottomley@Parallels.com>
 2014-12-08 07:42:25 -08:00
James Bottomley
dc843ef00e Merge remote-tracking branch 'scsi-queue/core-for-3.19' into for-linus 2014-12-08 07:40:20 -08:00
Guenter Roeck
907a6d5824 hwmon: (tmp401) Detect TMP435 on all addresses it supports 
TMP435 supports a range of I2C addresses, not just 0x4c.

Cc: Patrick Titiano <ptitiano@baylibre.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2014-12-08 06:48:37 -08:00
Nicholas Mc Guire
9fd7fc34cf locking/lglocks: Add documentation of current lglocks implementation 
Local/global locks are currently not documented anywhere other
than in an somewhat out-of-date LWN article - this is an attempt
to document the current state of lglocks.

This patch is against linux-next 3.18.0-rc6

Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Carsten Emde <c.emde@osadl.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20141208083326.GA29895@opentech.at
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 2014-12-08 09:55:00 +01:00
Ley Foon Tan
9cce02ec71 Documentation: Add documentation for Nios2 architecture 
Signed-off-by: Ley Foon Tan <lftan@altera.com>
 2014-12-08 12:56:06 +08:00
Ley Foon Tan
95acd4c7b6 nios2: Device tree support 
Add device tree support to arch/nios2.

Signed-off-by: Ley Foon Tan <lftan@altera.com>
 2014-12-08 12:56:01 +08:00
Mark Brown
176488fbc1 Merge remote-tracking branches 'regulator/topic/sky81452' and 'regulator/topic/stub' into regulator-next 2014-12-05 11:14:43 +00:00
Mark Brown
92d07a8ff6 Merge remote-tracking branches 'regulator/topic/max77686', 'regulator/topic/max77693', 'regulator/topic/max77802', 'regulator/topic/power-off' and 'regulator/topic/rk808' into regulator-next 2014-12-05 11:14:37 +00:00
Mark Brown
f291c74a32 Merge branch 'topic/suspend' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-sky81452 
Conflicts:
	drivers/regulator/sky81452-regulator.c
 2014-12-05 11:06:18 +00:00
Olof Johansson
fb3268b008 Merge branch 'clocksource/physical-timers' into next/dt 
These are a pre-req to get rk3288 SMP to work with some firmwares, so merge
it in here as well as in next/drivers.

* clocksource/physical-timers:
  clocksource: arch_timer: Allow the device tree to specify uninitialized timer registers
  clocksource: arch_timer: Fix code to use physical timers when requested
 2014-12-04 23:33:16 -08:00
Olof Johansson
6b34df9e30 Merge branch 'clocksource/physical-timers' into next/drivers 
* clocksource/physical-timers:
  clocksource: arch_timer: Allow the device tree to specify uninitialized timer registers
  clocksource: arch_timer: Fix code to use physical timers when requested
 2014-12-04 23:32:16 -08:00
Doug Anderson
65b5732d24 clocksource: arch_timer: Allow the device tree to specify uninitialized timer registers 
Some 32-bit (ARMv7) systems are architected like this:

* The firmware doesn't know and doesn't care about hypervisor mode and
  we don't want to add the complexity of hypervisor there.

* The firmware isn't involved in SMP bringup or resume.

* The ARCH timer come up with an uninitialized offset (CNTVOFF)
  between the virtual and physical counters.  Each core gets a
  different random offset.

* The device boots in "Secure SVC" mode.

* Nothing has touched the reset value of CNTHCTL.PL1PCEN or
  CNTHCTL.PL1PCTEN (both default to 1 at reset)

On systems like the above, it doesn't make sense to use the virtual
counter.  There's nobody managing the offset and each time a core goes
down and comes back up it will get reinitialized to some other random
value.

This adds an optional property which can inform the kernel of this
situation, and firmware is free to remove the property if it is going
to initialize the CNTVOFF registers when each CPU comes out of reset.

Currently, the best course of action in this case is to use the
physical timer, which is why it is important that CNTHCTL hasn't been
changed from its reset value and it's a reasonable assumption given
that the firmware has never entered HYP mode.

Note that it's been said that on ARMv8 systems the firmware and
kernel really can't be architected as described above.  That means
using the physical timer like this really only makes sense for ARMv7
systems.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
 2014-12-04 23:31:55 -08:00
Patrick Titiano
06adbaec2a hwmon: (tmp401) Add support for TI TMP435 
Signed-off-by: Patrick Titiano <ptitiano@baylibre.com>
[Bartosz Golaszewski: prepared for submission, code review fixes]
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
[Guenter Roeck: Merged two patches into one]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2014-12-04 10:59:42 -08:00
Arnd Bergmann
e58e501a9b ARM: tegra: IOMMU support for v3.19 
This adds the driver pieces required for IOMMU support on Tegra30,
 Tegra114 and Tegra124.
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Merge tag 'tegra-for-3.19-iommu' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers

Pull "ARM: tegra: IOMMU support for v3.19" from Thierry Reding:

This adds the driver pieces required for IOMMU support on Tegra30,
Tegra114 and Tegra124.

* tag 'tegra-for-3.19-iommu' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  memory: Add NVIDIA Tegra memory controller support
  of: Add NVIDIA Tegra memory controller binding
  ARM: tegra: Move AHB Kconfig to drivers/amba
  amba: Add Kconfig file
  clk: tegra: Implement memory-controller clock
  powerpc/iommu: Rename iommu_[un]map_sg functions
  iommu: Improve error handling when setting bus iommu
  iommu: Do more input validation in iommu_map_sg()
  iommu: Add iommu_map_sg() function

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2014-12-04 17:20:02 +01:00
Arnd Bergmann
a8afa2645c Reset controller changes for v3.19 
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Merge tag 'reset-for-3.19-2' of git://git.pengutronix.de/git/pza/linux into next/drivers

Pull "Reset controller changes for v3.19" from Philipp Zabel:

This adds a new driver for the sti soc family, and creates
a reset_control_status interface, which is added to the existing
drivers.

* tag 'reset-for-3.19-2' of git://git.pengutronix.de/git/pza/linux:
  reset: add socfpga_reset_status
  reset: sti: Document sti-picophyreset controllers bindings.
  reset: stih407: Add softreset, powerdown and picophy controllers
  reset: stih407: Add reset controllers DT bindings
  reset: add reset_control_status helper function

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2014-12-04 16:57:36 +01:00
Arnd Bergmann
f3507cc586 arm: Xilinx Zynq dt patches for v3.19 
- Declare Digilent and vendor
 - Add Zybo board support
 - Fix VDMA documentation to be align with the driver
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Merge tag 'zynq-dt-for-3.19' of https://github.com/Xilinx/linux-xlnx into next/dt

Pull "arm: Xilinx Zynq dt patches for v3.19" from Michal Simek:

- Declare Digilent and vendor
- Add Zybo board support
- Fix VDMA documentation to be align with the driver

* tag 'zynq-dt-for-3.19' of https://github.com/Xilinx/linux-xlnx:
  arm: dts: zynq: Add Digilent ZYBO board
  arm: dts: zynq: Move crystal freq. to board level
  doc: dt: vendor-prefixes: Add Digilent Inc
  Documentation: devicetree: Fix Xilinx VDMA specification

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2014-12-04 16:48:36 +01:00
Arnd Bergmann
ab64920c37 mvebu SoC suspend changes for v3.19 
- Armada 370/XP suspend/resume support
 
  - mvebu SoC driver suspend/resume support
     - irqchip
     - clocksource
     - mbus
     - clk
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Merge tag 'mvebu-soc-suspend-3.19' of git://git.infradead.org/linux-mvebu into next/soc

Pull "mvebu SoC suspend changes for v3.19" from Jason Cooper:

 - Armada 370/XP suspend/resume support

 - mvebu SoC driver suspend/resume support
    - irqchip
    - clocksource
    - mbus
    - clk

* tag 'mvebu-soc-suspend-3.19' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: add SDRAM controller description for Armada XP
  ARM: mvebu: adjust mbus controller description on Armada 370/XP
  ARM: mvebu: add suspend/resume DT information for Armada XP GP
  ARM: mvebu: synchronize secondary CPU clocks on resume
  ARM: mvebu: make sure MMU is disabled in armada_370_xp_cpu_resume
  ARM: mvebu: Armada XP GP specific suspend/resume code
  ARM: mvebu: reserve the first 10 KB of each memory bank for suspend/resume
  ARM: mvebu: implement suspend/resume support for Armada XP
  clk: mvebu: add suspend/resume for gatable clocks
  bus: mvebu-mbus: provide a mechanism to save SDRAM window configuration
  bus: mvebu-mbus: suspend/resume support
  clocksource: time-armada-370-xp: add suspend/resume support
  irqchip: armada-370-xp: Add suspend/resume support
  Documentation: dt-bindings: minimal documentation for MVEBU SDRAM controller

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2014-12-04 16:46:43 +01:00
Arnd Bergmann
136a713d80 Merge tag 'arm-soc/for-3.19/brcmstb-drivers' of https://github.com/brcm/linux into next/drivers 
This pull request contains the following changes to the Broadcom GISB bus
arbiter from Kevin Cernekee:

- Extend brcmstb GISB bus driver to work on MIPS (currently ARM-only) and support
  65nm and 40nm MIPS-based chips such as: BCM7038, BCM7400 and BCM7435

* tag 'arm-soc/for-3.19/brcmstb-drivers' of https://github.com/brcm/linux:
  bus: brcmstb_gisb: Add register offset tables for older chips
  bus: brcmstb_gisb: Look up register offsets in a table
  bus: brcmstb_gisb: Introduce wrapper functions for MMIO accesses
  bus: brcmstb_gisb: Make the driver buildable on MIPS

Conflicts:
	drivers/bus/brcmstb_gisb.c

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
 2014-12-04 16:44:05 +01:00
Guenter Roeck
dfcd4c53be hwmon: (lm95234) Add support for LM95233 
LM95233 is similar to LM95234, but it only supports two
instead of four external temperature sensors.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2014-12-02 06:11:53 -08:00
Gyungoh Yoo
8b7daad3da regulator: sky81452: Modify Device Tree structure 
Signed-off-by: Gyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
 2014-12-02 12:23:07 +00:00
Guenter Roeck
162a8dfe73 hwmon: (lm95245) Add support for LM95235 
LM95235 is register compatible to LM95245.

Also update link to LM95245 data sheet, and drop the link to the
datasheet from the driver source to simplify code maintenance.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2014-12-02 03:44:18 -08:00
Romain Perier
0ce5b30763 dt-bindings: Update documentation for "system-power-controller" and fix misspellings 
Signed-off-by: Romain Perier <romain.perier@gmail.com>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
 2014-12-01 19:33:46 +00:00
Romain Perier
8f73110f6b of: Rename "poweroff-source" property to "system-power-controller" 
It reverts commit a4b4e0461e ("of: Add standard property for poweroff capability").
As discussed on the mailing list, it makes more sense to rename back to the
old established property name, without the vendor prefix. Problem being that
the word "source" usually tends to be used for inputs and that is out of control
of the OS. The poweroff capability is an output which simply turns the
system-power off. Also, this property might be used by drivers which power-off
the system and power back on subsequent RTC alarms. This seems to suggest to
remove "poweroff" from the property name and to choose "system-power-controller"
as the more generic name. This patchs adds the required renaming changes and
defines an helper function which checks if this property is set.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
 2014-12-01 19:33:44 +00:00
Peter Crosthwaite
d86e3104e8 doc: dt: vendor-prefixes: Add Digilent Inc 
Digilent is a board designer, making various Linux capabable FPGA and
processor boards. Add to the vendor list.

Acked-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
 2014-12-01 09:22:31 +01:00
Andreas Färber
6eb48c818d Documentation: devicetree: Fix Xilinx VDMA specification 
The specification requires xlnx,data-width, but example and driver use
xlnx,datawidth. Change the specification to match the implementation.

Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Fixes: eebeac03db ("dma: Add Xilinx Video DMA DT Binding Documentation")
Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
 2014-12-01 09:22:30 +01:00
Guenter Roeck
8aefb93f09 hwmon: (nct6775) Add support for NCT6792D 
NCT6792D is similar to NCT6791D. Only beep control and temperature
monitoring registers are different.

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
 2014-11-30 20:13:13 -08:00