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Linus Torvalds
669c0f762e Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 platform updates from Thomas Gleixner:
 "The platform support for x86 contains the following updates:

   - A set of updates for the UV platform to support new CPUs and to fix
     some of the UV4A BAU MRRs

   - The initial platform support for the jailhouse hypervisor to allow
     native Linux guests (inmates) in non-root cells.

   - A fix for the PCI initialization on Intel MID platforms"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
  x86/jailhouse: Respect pci=lastbus command line settings
  x86/jailhouse: Set X86_FEATURE_TSC_KNOWN_FREQ
  x86/platform/intel-mid: Move PCI initialization to arch_init()
  x86/platform/uv/BAU: Replace hard-coded values with MMR definitions
  x86/platform/UV: Fix UV4A BAU MMRs
  x86/platform/UV: Fix GAM MMR references in the UV x2apic code
  x86/platform/UV: Fix GAM MMR changes in UV4A
  x86/platform/UV: Add references to access fixed UV4A HUB MMRs
  x86/platform/UV: Fix UV4A support on new Intel Processors
  x86/platform/UV: Update uv_mmrs.h to prepare for UV4A fixes
  x86/jailhouse: Add PCI dependency
  x86/jailhouse: Hide x2apic code when CONFIG_X86_X2APIC=n
  x86/jailhouse: Initialize PCI support
  x86/jailhouse: Wire up IOAPIC for legacy UART ports
  x86/jailhouse: Halt instead of failing to restart
  x86/jailhouse: Silence ACPI warning
  x86/jailhouse: Avoid access of unsupported platform resources
  x86/jailhouse: Set up timekeeping
  x86/jailhouse: Enable PMTIMER
  x86/jailhouse: Enable APIC and SMP support
  ...
 2018-01-29 18:17:39 -08:00
Linus Torvalds
f0b13428c9 Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86/cache updates from Thomas Gleixner:
 "A set of patches which add support for L2 cache partitioning to the
  Intel RDT facility"

* 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/intel_rdt: Add command line parameter to control L2_CDP
  x86/intel_rdt: Enable L2 CDP in MSR IA32_L2_QOS_CFG
  x86/intel_rdt: Add two new resources for L2 Code and Data Prioritization (CDP)
  x86/intel_rdt: Enumerate L2 Code and Data Prioritization (CDP) feature
  x86/intel_rdt: Add L2CDP support in documentation
  x86/intel_rdt: Update documentation
 2018-01-29 17:48:22 -08:00
Linus Torvalds
a46d3f9b1c Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull timer updates from Thomas Gleixner:
 "The timer departement presents:

   - A rather large rework of the hrtimer infrastructure which
     introduces softirq based hrtimers to replace the spread of
     hrtimer/tasklet combos which force the actual callback execution
     into softirq context. The approach is completely different from the
     initial implementation which you cursed at 10 years ago rightfully.

     The softirq based timers have their own queues and there is no
     nasty indirection and list reshuffling in the hard interrupt
     anymore. This comes with conversion of some of the hrtimer/tasklet
     users, the rest and the final removal of that horrible interface
     will come towards the end of the merge window or go through the
     relevant maintainer trees.

     Note: The top commit merged the last minute bugfix for the 10 years
     old CPU hotplug bug as I wanted to make sure that I fatfinger the
     merge conflict resolution myself.

   - The overhaul of the STM32 clocksource/clockevents driver

   - A new driver for the Spreadtrum SC9860 timer

   - A new driver dor the Actions Semi S700 timer

   - The usual set of fixes and updates all over the place"

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits)
  usb/gadget/NCM: Replace tasklet with softirq hrtimer
  ALSA/dummy: Replace tasklet with softirq hrtimer
  hrtimer: Implement SOFT/HARD clock base selection
  hrtimer: Implement support for softirq based hrtimers
  hrtimer: Prepare handling of hard and softirq based hrtimers
  hrtimer: Add clock bases and hrtimer mode for softirq context
  hrtimer: Use irqsave/irqrestore around __run_hrtimer()
  hrtimer: Factor out __hrtimer_next_event_base()
  hrtimer: Factor out __hrtimer_start_range_ns()
  hrtimer: Remove the 'base' parameter from hrtimer_reprogram()
  hrtimer: Make remote enqueue decision less restrictive
  hrtimer: Unify remote enqueue handling
  hrtimer: Unify hrtimer removal handling
  hrtimer: Make hrtimer_force_reprogramm() unconditionally available
  hrtimer: Make hrtimer_reprogramm() unconditional
  hrtimer: Make hrtimer_cpu_base.next_timer handling unconditional
  hrtimer: Make the remote enqueue check unconditional
  hrtimer: Use accesor functions instead of direct access
  hrtimer: Make the hrtimer_cpu_base::hres_active field unconditional, to simplify the code
  hrtimer: Make room in 'struct hrtimer_cpu_base'
  ...
 2018-01-29 16:50:58 -08:00
Linus Torvalds
7bcd342594 Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull irq updates from Thomas Gleixner:
 "A rather small set of irq updates this time:

   - removal of the old and now obsolete irq domain debugging code

   - the new Goldfish PIC driver

   - the usual pile of small fixes and updates"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqdomain: Kill CONFIG_IRQ_DOMAIN_DEBUG
  irq/work: Improve the flag definitions
  irqchip/gic-v3: Fix the driver probe() fail due to disabled GICC entry
  irqchip/irq-goldfish-pic: Add Goldfish PIC driver
  dt-bindings/goldfish-pic: Add device tree binding for Goldfish PIC driver
  irqchip/ompic: fix return value check in ompic_of_init()
  dt-bindings/bcm283x: Define polarity of per-cpu interrupts
  irqchip/irq-bcm2836: Add support for DT interrupt polarity
  dt-bindings/bcm2836-l1-intc: Add interrupt polarity support
 2018-01-29 16:47:21 -08:00
Linus Torvalds
d0bd31dc5c Xtensa improvements for v4.16: 
- add SSP support;
 - add KASAN support;
 - improvements to xtensa-specific assembly:
   - use ENTRY and ENDPROC consistently;
   - clean up and unify word alignment macros;
   - clean up and unify fixup marking;
   - use 'call' instead of 'callx' where possible;
 - various cleanups:
   - consiolidate kernel stack size related definitions;
   - replace #ifdef'fed/commented out debug printk statements with pr_debug;
   - use struct exc_table instead of flat array for exception handling data;
 - build kernel with -mtext-section-literals; simplify xtensa linker script;
 - fix futex_atomic_cmpxchg_inatomic.
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Merge tag 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa updates from Max Filippov:

 - add SSP support

 - add KASAN support

 - improvements to xtensa-specific assembly:
    - use ENTRY and ENDPROC consistently
    - clean up and unify word alignment macros
    - clean up and unify fixup marking
    - use 'call' instead of 'callx' where possible

 - various cleanups:
    - consiolidate kernel stack size related definitions
    - replace #ifdef'fed/commented out debug printk statements with
      pr_debug
    - use struct exc_table instead of flat array for exception handling
      data

 - build kernel with -mtext-section-literals; simplify xtensa linker
   script

 - fix futex_atomic_cmpxchg_inatomic()

* tag 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa: (21 commits)
  xtensa: fix futex_atomic_cmpxchg_inatomic
  xtensa: shut up gcc-8 warnings
  xtensa: print kernel sections info in mem_init
  xtensa: use generic strncpy_from_user with KASAN
  xtensa: use __memset in __xtensa_clear_user
  xtensa: add support for KASAN
  xtensa: move fixmap and kmap just above the KSEG
  xtensa: don't clear swapper_pg_dir in paging_init
  xtensa: extract init_kio
  xtensa: implement early_trap_init
  xtensa: clean up exception handling structure
  xtensa: clean up custom-controlled debug output
  xtensa: enable stack protector
  xtensa: print hardware config ID on startup
  xtensa: consolidate kernel stack size related definitions
  xtensa: clean up functions in assembly code
  xtensa: clean up word alignment macros in assembly code
  xtensa: clean up fixups in assembly code
  xtensa: use call instead of callx in assembly code
  xtensa: build kernel with text-section-literals
  ...
 2018-01-29 16:40:28 -08:00
Linus Torvalds
aca21de2e8 m68k updates for 4.16 
- First part of an overhaul of the NuBus subsystem, to bring it up to
     modern driver model standards,
   - A race condition fix for Mac,
   - Defconfig updates.
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Merge tag 'm68k-for-v4.16-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:

  - first part of an overhaul of the NuBus subsystem, to bring it up to
    modern driver model standards

  - a race condition fix for Mac

  - defconfig updates

* tag 'm68k-for-v4.16-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  MAINTAINERS: Add NuBus subsystem entry
  m68k/mac: Fix race conditions in OSS interrupt dispatch
  nubus: Add support for the driver model
  nubus: Add expansion_type values for various Mac models
  nubus: Adopt standard linked list implementation
  nubus: Rename struct nubus_dev
  nubus: Rework /proc/bus/nubus/s/ implementation
  nubus: Generalize block resource handling
  nubus: Clean up whitespace
  nubus: Remove redundant code
  nubus: Call proc_mkdir() not more than once per slot directory
  nubus: Validate slot resource IDs
  nubus: Fix log spam
  nubus: Use static functions where possible
  nubus: Fix up header split
  nubus: Avoid array underflow and overflow
  m68k/defconfig: Update defconfigs for v4.15-rc1
 2018-01-29 16:37:15 -08:00
Linus Torvalds
31466f3ed7 for-4.16-tag 
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Merge tag 'for-4.16-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs updates from David Sterba:
 "Features or user visible changes:

   - fallocate: implement zero range mode

   - avoid losing data raid profile when deleting a device

   - tree item checker: more checks for directory items and xattrs

  Notable fixes:

   - raid56 recovery: don't use cached stripes, that could be
     potentially changed and a later RMW or recovery would lead to
     corruptions or failures

   - let raid56 try harder to rebuild damaged data, reading from all
     stripes if necessary

   - fix scrub to repair raid56 in a similar way as in the case above

  Other:

   - cleanups: device freeing, removed some call indirections, redundant
     bio_put/_get, unused parameters, refactorings and renames

   - RCU list traversal fixups

   - simplify mount callchain, remove recursing back when mounting a
     subvolume

   - plug for fsync, may improve bio merging on multiple devices

   - compression heurisic: replace heap sort with radix sort, gains some
     performance

   - add extent map selftests, buffered write vs dio"

* tag 'for-4.16-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (155 commits)
  btrfs: drop devid as device_list_add() arg
  btrfs: get device pointer from device_list_add()
  btrfs: set the total_devices in device_list_add()
  btrfs: move pr_info into device_list_add
  btrfs: make btrfs_free_stale_devices() to match the path
  btrfs: rename btrfs_free_stale_devices() arg to skip_dev
  btrfs: make btrfs_free_stale_devices() argument optional
  btrfs: make btrfs_free_stale_device() to iterate all stales
  btrfs: no need to check for btrfs_fs_devices::seeding
  btrfs: Use IS_ALIGNED in btrfs_truncate_block instead of opencoding it
  Btrfs: noinline merge_extent_mapping
  Btrfs: add WARN_ONCE to detect unexpected error from merge_extent_mapping
  Btrfs: extent map selftest: dio write vs dio read
  Btrfs: extent map selftest: buffered write vs dio read
  Btrfs: add extent map selftests
  Btrfs: move extent map specific code to extent_map.c
  Btrfs: add helper for em merge logic
  Btrfs: fix unexpected EEXIST from btrfs_get_extent
  Btrfs: fix incorrect block_len in merge_extent_mapping
  btrfs: Remove unused readahead spinlock
  ...
 2018-01-29 14:04:23 -08:00
Linus Torvalds
6787dc24b7 4.16 fixes for SMB3 
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Merge tag '4.16-rc-SMB3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs updates from Steve French:
 "Some fixes for stable, fixed SMB3 DFS support, SMB3 Direct (RDMA) and
  various bug fixes and cleanup"

* tag '4.16-rc-SMB3' of git://git.samba.org/sfrench/cifs-2.6: (60 commits)
  fs/cifs/cifsacl.c Fixes typo in a comment
  update internal version number for cifs.ko
  cifs: add .splice_write
  CIFS: document tcon/ses/server refcount dance
  move a few externs to smbdirect.h to eliminate warning
  CIFS: zero sensitive data when freeing
  Cleanup some minor endian issues in smb3 rdma
  CIFS: dump IPC tcon in debug proc file
  CIFS: use tcon_ipc instead of use_ipc parameter of SMB2_ioctl
  CIFS: make IPC a regular tcon
  cifs: remove redundant duplicated assignment of pointer 'node'
  CIFS: SMBD: work around gcc -Wmaybe-uninitialized warning
  cifs: Fix autonegotiate security settings mismatch
  CIFS: SMBD: _smbd_get_connection() can be static
  CIFS: SMBD: Disable signing on SMB direct transport
  CIFS: SMBD: Add SMB Direct debug counters
  CIFS: SMBD: Upper layer performs SMB read via RDMA write through memory registration
  CIFS: SMBD: Read correct returned data length for RDMA write (SMB read) I/O
  CIFS: SMBD: Upper layer performs SMB write via RDMA read through memory registration
  CIFS: SMBD: Implement RDMA memory registration
  ...
 2018-01-29 14:02:20 -08:00
Linus Torvalds
a4b7fd7d34 inode->i_version rework for v4.16 
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Merge tag 'iversion-v4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux

Pull inode->i_version rework from Jeff Layton:
 "This pile of patches is a rework of the inode->i_version field. We
  have traditionally incremented that field on every inode data or
  metadata change. Typically this increment needs to be logged on disk
  even when nothing else has changed, which is rather expensive.

  It turns out though that none of the consumers of that field actually
  require this behavior. The only real requirement for all of them is
  that it be different iff the inode has changed since the last time the
  field was checked.

  Given that, we can optimize away most of the i_version increments and
  avoid dirtying inode metadata when the only change is to the i_version
  and no one is querying it. Queries of the i_version field are rather
  rare, so we can help write performance under many common workloads.

  This patch series converts existing accesses of the i_version field to
  a new API, and then converts all of the in-kernel filesystems to use
  it. The last patch in the series then converts the backend
  implementation to a scheme that optimizes away a large portion of the
  metadata updates when no one is looking at it.

  In my own testing this series significantly helps performance with
  small I/O sizes. I also got this email for Christmas this year from
  the kernel test robot (a 244% r/w bandwidth improvement with XFS over
  DAX, with 4k writes):

    https://lkml.org/lkml/2017/12/25/8

  A few of the earlier patches in this pile are also flowing to you via
  other trees (mm, integrity, and nfsd trees in particular)".

* tag 'iversion-v4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux: (22 commits)
  fs: handle inode->i_version more efficiently
  btrfs: only dirty the inode in btrfs_update_time if something was changed
  xfs: avoid setting XFS_ILOG_CORE if i_version doesn't need incrementing
  fs: only set S_VERSION when updating times if necessary
  IMA: switch IMA over to new i_version API
  xfs: convert to new i_version API
  ufs: use new i_version API
  ocfs2: convert to new i_version API
  nfsd: convert to new i_version API
  nfs: convert to new i_version API
  ext4: convert to new i_version API
  ext2: convert to new i_version API
  exofs: switch to new i_version API
  btrfs: convert to new i_version API
  afs: convert to new i_version API
  affs: convert to new i_version API
  fat: convert to new i_version API
  fs: don't take the i_lock in inode_inc_iversion
  fs: new API for handling inode->i_version
  ntfs: remove i_version handling
  ...
 2018-01-29 13:33:53 -08:00
Linus Torvalds
d1de762e36 This pull request contains updates for both UBI and UBIFS: 
- Usage of new fscrypt APIs
 - A fix for a Fastmap issue
 - Other minor bug fixes
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Merge tag 'upstream-4.16-rc1' of git://git.infradead.org/linux-ubifs

Pull UBI/UBIFS updates from Richard Weinberger:

 - use the new fscrypt APIs

 - a fix for a Fastmap issue

 - other minor bug fixes

* tag 'upstream-4.16-rc1' of git://git.infradead.org/linux-ubifs:
  ubi: block: Fix locking for idr_alloc/idr_remove
  mtd: ubi: wl: Fix error return code in ubi_wl_init()
  ubi: Fix copy/paste error in function documentation
  ubi: Fastmap: Fix typo
  ubifs: remove error message in ubifs_xattr_get
  ubi: fastmap: Erase outdated anchor PEBs during attach
  ubifs: switch to fscrypt_prepare_setattr()
  ubifs: switch to fscrypt_prepare_lookup()
  ubifs: switch to fscrypt_prepare_rename()
  ubifs: switch to fscrypt_prepare_link()
  ubifs: switch to fscrypt_file_open()
  ubi: fastmap: Clean up the initialization of pointer p
  ubi: fastmap: Use kmem_cache_free to deallocate memory
  ubi: Fix race condition between ubi volume creation and udev
  mtd: ubi: Use 'max_bad_blocks' to compute bad_peb_limit if available
  ubifs: Fix uninitialized variable in search_dh_cookie()
 2018-01-29 13:31:47 -08:00
Linus Torvalds
0a4b6e2f80 Merge branch 'for-4.16/block' of git://git.kernel.dk/linux-block 
Pull block updates from Jens Axboe:
 "This is the main pull request for block IO related changes for the
  4.16 kernel. Nothing major in this pull request, but a good amount of
  improvements and fixes all over the map. This contains:

   - BFQ improvements, fixes, and cleanups from Angelo, Chiara, and
     Paolo.

   - Support for SMR zones for deadline and mq-deadline from Damien and
     Christoph.

   - Set of fixes for bcache by way of Michael Lyle, including fixes
     from himself, Kent, Rui, Tang, and Coly.

   - Series from Matias for lightnvm with fixes from Hans Holmberg,
     Javier, and Matias. Mostly centered around pblk, and the removing
     rrpc 1.2 in preparation for supporting 2.0.

   - A couple of NVMe pull requests from Christoph. Nothing major in
     here, just fixes and cleanups, and support for command tracing from
     Johannes.

   - Support for blk-throttle for tracking reads and writes separately.
     From Joseph Qi. A few cleanups/fixes also for blk-throttle from
     Weiping.

   - Series from Mike Snitzer that enables dm to register its queue more
     logically, something that's alwways been problematic on dm since
     it's a stacked device.

   - Series from Ming cleaning up some of the bio accessor use, in
     preparation for supporting multipage bvecs.

   - Various fixes from Ming closing up holes around queue mapping and
     quiescing.

   - BSD partition fix from Richard Narron, fixing a problem where we
     can't mount newer (10/11) FreeBSD partitions.

   - Series from Tejun reworking blk-mq timeout handling. The previous
     scheme relied on atomic bits, but it had races where we would think
     a request had timed out if it to reused at the wrong time.

   - null_blk now supports faking timeouts, to enable us to better
     exercise and test that functionality separately. From me.

   - Kill the separate atomic poll bit in the request struct. After
     this, we don't use the atomic bits on blk-mq anymore at all. From
     me.

   - sgl_alloc/free helpers from Bart.

   - Heavily contended tag case scalability improvement from me.

   - Various little fixes and cleanups from Arnd, Bart, Corentin,
     Douglas, Eryu, Goldwyn, and myself"

* 'for-4.16/block' of git://git.kernel.dk/linux-block: (186 commits)
  block: remove smart1,2.h
  nvme: add tracepoint for nvme_complete_rq
  nvme: add tracepoint for nvme_setup_cmd
  nvme-pci: introduce RECONNECTING state to mark initializing procedure
  nvme-rdma: remove redundant boolean for inline_data
  nvme: don't free uuid pointer before printing it
  nvme-pci: Suspend queues after deleting them
  bsg: use pr_debug instead of hand crafted macros
  blk-mq-debugfs: don't allow write on attributes with seq_operations set
  nvme-pci: Fix queue double allocations
  block: Set BIO_TRACE_COMPLETION on new bio during split
  blk-throttle: use queue_is_rq_based
  block: Remove kblockd_schedule_delayed_work{,_on}()
  blk-mq: Avoid that blk_mq_delay_run_hw_queue() introduces unintended delays
  blk-mq: Rename blk_mq_request_direct_issue() into blk_mq_request_issue_directly()
  lib/scatterlist: Fix chaining support in sgl_alloc_order()
  blk-throttle: track read and write request individually
  block: add bdev_read_only() checks to common helpers
  block: fail op_is_write() requests to read-only partitions
  blk-throttle: export io_serviced_recursive, io_service_bytes_recursive
  ...
 2018-01-29 11:51:49 -08:00
Linus Torvalds
9697e9da84 * New EDAC driver for some TI SOCs (Tero Kristo) 
* small cleanups
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Merge tag 'edac_for_4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:

 - new EDAC driver for some TI SOCs (Tero Kristo)

 - small cleanups

* tag 'edac_for_4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, mv64x60: Fix an error handling path
  EDAC, ti: Add support for TI keystone and DRA7xx EDAC
  EDAC, octeon: Fix an uninitialized variable warning
 2018-01-29 11:47:42 -08:00
Linus Torvalds
b5856f97b3 regmap: Updates for v4.16 
A very busy release for regmap, all fairly specialist stuff but useful:
 
  - Support for disabling locking from Bartosz Golaszewski, allowing
    users that handle their own locking to save some overhead.
  - Support for hwspinlocks in syscons in MFD from Baolin Wang, this is
    going through the regmap tree since the first users turned up some
    some cases that needed interface tweaks with 0 being used as a syscon
    identifier.
  - Support for devices with no read or write flag from Andrew F. Davis.
  - Basic support for devices on SoundWire buses from Vinod Koul.
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Merge tag 'regmap-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "A very busy release for regmap, all fairly specialist stuff but
  useful:

   - Support for disabling locking from Bartosz Golaszewski, allowing
     users that handle their own locking to save some overhead.

   - Support for hwspinlocks in syscons in MFD from Baolin Wang, this is
     going through the regmap tree since the first users turned up some
     some cases that needed interface tweaks with 0 being used as a
     syscon identifier.

   - Support for devices with no read or write flag from Andrew F.
     Davis.

   - Basic support for devices on SoundWire buses from Vinod Koul"

* tag 'regmap-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  mfd: syscon: Add hardware spinlock support
  regmap: Allow empty read/write_flag_mask
  regcache: flat: Un-inline index lookup from cache access
  regmap: Add SoundWire bus support
  regmap: Add one flag to indicate if a hwlock should be used
  regmap: debugfs: document why we don't create the debugfs entries
  regmap: debugfs: emit a debug message when locking is disabled
  regmap: use proper part of work_buf for storing val
  regmap: potentially duplicate the name string stored in regmap
  regmap: Disable debugfs when locking is disabled
  regmap: rename regmap_lock_unlock_empty() to regmap_lock_unlock_none()
  regmap: allow to disable all locking mechanisms
  regmap: Remove the redundant config to select hwspinlock
 2018-01-29 11:35:24 -08:00
Linus Torvalds
dc38787a58 regulator: Changes for v4.16 
This is a quiet release in terms of code volume but a fairly big one in
 terms of framework changes - we've got one long awaited feature in the
 form of runtime configuration of suspend and the start of coupled
 regulator support too:
 
  - Support for modifying the voltage and enable configuration devices
    will have in suspend, contributed by Chunyan Zhang.
  - Support for the Spreadtrum SC2731, contributed by Erick Chen.
  - The start of changes to support coupled regulators from Maciej
    Purski, the rest of the series should arrive for v4.17.
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Merge tag 'regulator-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "This is a quiet release in terms of code volume but a fairly big one
  in terms of framework changes - we've got one long awaited feature in
  the form of runtime configuration of suspend and the start of coupled
  regulator support too:

   - Support for modifying the voltage and enable configuration devices
     will have in suspend, contributed by Chunyan Zhang.

   - Support for the Spreadtrum SC2731, contributed by Erick Chen.

   - The start of changes to support coupled regulators from Maciej
     Purski, the rest of the series should arrive for v4.17"

* tag 'regulator-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: Fix build error
  regulator: core: Refactor regulator_list_voltage()
  regulator: core: Move of_find_regulator_by_node() to of_regulator.c
  regulator: add PM suspend and resume hooks
  regulator: empty the old suspend functions
  regulator: leave one item to record whether regulator is enabled
  regulator: make regulator voltage be an array to support more states
  regulator: added support for suspend states
  regulator: qcom_spmi: Use regmap helpers for enable/disable/is_enabled callback
  regulator: sc2731: Fix defines for SC2731_WR_UNLOCK and SC2731_PWR_WR_PROT_VALUE
  regulator: fix incorrect indentation of two assignment statements
  regulator: sc2731: Add regulator driver to support Spreadtrum SC2731 PMIC
  regulator: Add Spreadtrum SC2731 regulator documentation
  regulator: Update code examples in documentation
  MAINTAINERS: regulator: Add Documentation/power/regulator/
  regulator: tps65218: Add NULL test for devm_kzalloc call
  regulator: tps65218: Remove unused enum tps65218_regulators
 2018-01-29 11:32:44 -08:00
Linus Torvalds
8e3264710c spi: Updates for v4.16 
Quite a quiet release for SPI, there are no changes at all to the core
 and not that many changes to drivers.  Highlights of those driver
 changes include:
 
  - SH MSIOF support for GPIO chip selects contributed by Geert
    Uytterhoeven.
  - Full duplex support for a3700 contributed by Maxime Chevallier.
  - Support for DMA transfers on Atmel devices that require a bounce
    buffer contributed by Radu Pirea.
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Merge tag 'spi-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Quite a quiet release for SPI, there are no changes at all to the core
  and not that many changes to drivers. Highlights of those driver
  changes include:

   - SH MSIOF support for GPIO chip selects contributed by Geert
     Uytterhoeven.

   - Full duplex support for a3700 contributed by Maxime Chevallier.

   - Support for DMA transfers on Atmel devices that require a bounce
     buffer contributed by Radu Pirea"

* tag 'spi-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (31 commits)
  spi: dw: Remove unused members from struct chip_data
  spi: orion: Fix a resource leak if the optional "axi" clk is deferred
  spi: a3700: Remove endianness swapping for full-duplex transfers
  spi: a3700: Remove endianness swapping functions when accessing FIFOs
  spi: a3700: Add full-duplex support
  spi: a3700: Allow to enable or disable FIFO mode
  spi: a3700: Set frequency limits at startup
  spi: a3700: Clear DATA_OUT when performing a read
  spi: orion: Fix clock resource by adding an optional bus clock
  spi: s3c64xx: add SPDX identifier
  spi: imx: do not access registers while clocks disabled
  spi: atmel: Implements transfers with bounce buffer
  spi: sh-msiof: Fix timeout failures for TX-only DMA transfers
  spi: spi-fsl-dspi: account for const type of of_device_id.data
  spi: bcm53xx: simplify reading SPI data
  spi: sirf: account for const type of of_device_id.data
  spi: pxa2xx: Use gpiod_put() not gpiod_free()
  spi: pxa2xx: avoid redundant gpio_to_desc(desc_to_gpio()) round-trip
  spi: sh-msiof: Document hardware limitations related to chip selects
  spi: sh-msiof: Implement cs-gpios configuration
  ...
 2018-01-29 11:30:16 -08:00
Linus Torvalds
0bae60fcee There are two major achievements for MMC in this release, which deserves to be 
specially highlighted.
 
 First, we have converted the MMC block device from using the legacy blk
 interface into using the modern blkmq interface. Not only do we get all the
 nice effects from using blkmq, but it also means that new fresh nice code
 replaces old rusty code. Great news to everybody that cares about MMC/SD!
 
 It should also be noted that converting to blkmq has not been trivial, mostly
 because of that we have been carrying too much of MMC specific optimizations
 for the I/O request path, rather than striving to move these to the generic blk
 layer. Hopefully we won't be doing that mistake, ever again.
 
 Special thanks to Adrian Hunter (Intel) and to Linus Walleij (Linaro), who both
 have been working on this for quite some time!
 
 Second, on top of the blkmq deployment, we have enabled full support the eMMC
 command queuing feature, introduced in the eMMC v.5.1 spec. This also includes
 an implementation of a host driver library, supporting the corresponding CQHCI
 HW. Ideally, those controllers that supports CQHCI should only need some minor
 adaptations to make this play.
 
 So far the sdhci-pci driver for the Intel GLKs and the sdhci-of-arasan driver
 used on Rockchip RK3399, have enabled support for eMMC command queueing.
 
 Worth to highlight is also that, implementing the eMMC command queuing support
 has been a collaborative effort, as several people from Codeaurora, Rockchip,
 Intel and Linaro have been involved. However, the work has been driven by
 Adrian Hunter (Intel).
 
 In some shadow of the above, here are the rest of the highlights:
 
 MMC core:
  - Don't remove non-removable cards during system suspend
  - Add a slot-gpio helper to check capability of GPIO WP detection
 
 MMC host:
  - sdhci: Cleanups and improvements of some wakeup related code
  - sdhci-pci-arasan: New variant to support Arasan PCI HW with integrated phy
  - sdhci-acpi: Avoid broken UHS transfer modes on Intel CHT
  - sdhci-acpi: Add support for ACPI HID of AMD Controller with HS400
  - sdhci_f_sdh30: Add ACPI support
  - sdhci-esdhc-imx: Enable/disable clock at runtime suspend/resume
  - sdhci-of-esdhc: A few minor fixes
  - mmci: Add support for new STM32 variant
  - renesas_sdhi: enable R-Car D3 (r8a77995) support
  - tmio/renesas_sdhi: Re-structuring, cleanups and modernizations
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Merge tag 'mmc-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "There are two major achievements for MMC in this release, which
  deserves to be specially highlighted.

  First, we have converted the MMC block device from using the legacy
  blk interface into using the modern blkmq interface. Not only do we
  get all the nice effects from using blkmq, but it also means that new
  fresh nice code replaces old rusty code. Great news to everybody that
  cares about MMC/SD!

  It should also be noted that converting to blkmq has not been trivial,
  mostly because of that we have been carrying too much of MMC specific
  optimizations for the I/O request path, rather than striving to move
  these to the generic blk layer. Hopefully we won't be doing that
  mistake, ever again.

  Special thanks to Adrian Hunter (Intel) and to Linus Walleij (Linaro),
  who both have been working on this for quite some time!

  Second, on top of the blkmq deployment, we have enabled full support
  the eMMC command queuing feature, introduced in the eMMC v.5.1 spec.
  This also includes an implementation of a host driver library,
  supporting the corresponding CQHCI HW. Ideally, those controllers that
  supports CQHCI should only need some minor adaptations to make this
  play.

  So far the sdhci-pci driver for the Intel GLKs and the sdhci-of-arasan
  driver used on Rockchip RK3399, have enabled support for eMMC command
  queueing.

  Worth to highlight is also that, implementing the eMMC command queuing
  support has been a collaborative effort, as several people from
  Codeaurora, Rockchip, Intel and Linaro have been involved. However,
  the work has been driven by Adrian Hunter (Intel).

  In some shadow of the above, here are the rest of the highlights:

  MMC core:
   - Don't remove non-removable cards during system suspend
   - Add a slot-gpio helper to check capability of GPIO WP detection

  MMC host:
   - sdhci: Cleanups and improvements of some wakeup related code
   - sdhci-pci-arasan: New variant to support Arasan PCI HW with integrated phy
   - sdhci-acpi: Avoid broken UHS transfer modes on Intel CHT
   - sdhci-acpi: Add support for ACPI HID of AMD Controller with HS400
   - sdhci_f_sdh30: Add ACPI support
   - sdhci-esdhc-imx: Enable/disable clock at runtime suspend/resume
   - sdhci-of-esdhc: A few minor fixes
   - mmci: Add support for new STM32 variant
   - renesas_sdhi: enable R-Car D3 (r8a77995) support
   - tmio/renesas_sdhi: Re-structuring, cleanups and modernizations"

* tag 'mmc-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (96 commits)
  mmc: mmci: fix error return code in mmci_probe()
  mmc: davinci: suppress error message on EPROBE_DEFER
  mmc: davinci: dont' use module_platform_driver_probe()
  mmc: tmio: hide unused tmio_mmc_clk_disable/tmio_mmc_clk_enable functions
  mmc: mmci: Add STM32 variant
  mmc: mmci: Add support for setting pad type via pinctrl
  mmc: mmci: Don't pretend all variants to have OPENDRAIN bit
  mmc: mmci: Don't pretend all variants to have MCI_STARBITERR flag
  mmc: mmci: Don't pretend all variants to have MMCIMASK1 register
  mmc: tmio: refactor .get_ro hook
  mmc: slot-gpio: add a helper to check capability of GPIO WP detection
  mmc: tmio: remove dma_ops from tmio_mmc_host_probe() argument
  mmc: tmio: move {tmio_}mmc_of_parse() to tmio_mmc_host_alloc()
  mmc: tmio: move clk_enable/disable out of tmio_mmc_host_probe()
  mmc: tmio: ioremap memory resource in tmio_mmc_host_alloc()
  mmc: sh_mmcif: remove redundant initialization of 'opc'
  mmc: sdhci: Rework sdhci_enable_irq_wakeups()
  mmc: sdhci: Handle failure of enable_irq_wake()
  mmc: sdhci: Stop exporting sdhci_enable_irq_wakeups()
  mmc: sdhci-pci: Use device wakeup capability to determine MMC_PM_WAKE_SDIO_IRQ capability
  ...
 2018-01-29 11:26:11 -08:00
Linus Torvalds
47d5cc5be3 hwmon updates for v4.16 
New driver for W83773G
 Fan control support for PMBus drivers
 Improvements and minor fixes in several drivers
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Merge tag 'hwmon-for-linus-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:

 - New driver for W83773G

 - Fan control support for PMBus drivers

 - Improvements and minor fixes in several drivers

* tag 'hwmon-for-linus-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (32 commits)
  hwmon: (dell-smm) Disable fan support for Dell Vostro 3360
  hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720
  hwmon: (dell-smm) Enable broken functionality via "force" module param
  hwmon: (k10temp) Add temperature offset for Ryzen 1900X
  hwmon: (lm75) Fix trailing semicolon
  hwmon: (ina2xx) Fix access to uninitialized mutex
  hwmon: (pmbus/ir35221) Remove unnecessary scaling
  hwmon: (sht3x) wait predefined limits loading complete before access
  hwmon: (pmbus/ibm-cffps) Add dependency on LEDS_CLASS
  hwmon: (pmbus/cffps) Add led class device for power supply fault led
  hwmon: (pmbus) cffps: Add PMBUS_SKIP_STATUS_CHECK
  hwmon: (aspeed-pwm-tacho) Deassert reset in probe
  dt-bindings: hwmon: aspeed-pwm-tacho: Add reset node
  hwmon: (pmbus) cffps: Add debugfs entries
  hwmon: (pmbus) Export pmbus device debugfs directory entry
  hwmon: (w83773g) Fix fault detection and reporting
  hwmon: (hih6130) Fix documentation of struct hih6130
  hwmon: (iio_hwmon) Fix documentation of struct iio_hwmon_state
  hwmon: (sht15) Fix parameter documentation of sht15_crc8()
  hwmon: (sht21) Fix documentation of struct sht21
  ...
 2018-01-29 11:20:45 -08:00
Linus Torvalds
0fc7e74663 MTD changes: 
Core changes:
   * Rework core functions to avoid duplicating generic checks in
     NAND/OneNAND sub-layers
   * Update the MAINTAINERS entry to reflect the fact that MTD
     maintainers now use a single git tree
 
   Driver changes:
   * CFI: use macros instead of inline functions to limit stack
     usage and make KASAN happy
 
 NAND changes:
   Core changes:
   * Fix NAND_CMD_NONE handling in nand_command[_lp]() hooks
   * Introduce the ->exec_op() infrastructure
   * Rework NAND buffers handling
   * Fix ECC requirements for K9F4G08U0D
   * Fix nand_do_read_oob() to return the number of bitflips
   * Mark K9F1G08U0E as not supporting subpage writes
 
   Driver changes:
   * MTK: Rework the driver to support new IP versions
   * OMAP OneNAND: Full rework to use new APIs (libgpio, dmaengine) and fix
     DT support
   * Marvell: Add a new driver to replace the pxa3xx one
 
 SPI NOR changes:
   Core changes:
   * Add support to new ISSI and Cypress/Spansion memory parts.
   * Fix support of Micron memories by checking error bits in the FSR.
   * Fix update of block-protection bits by reading back the SR.
   * Restore the internal state of the SPI flash memory when removing the
     device.
 
   Driver changes:
   * Maintenance for Freescale, Intel and Metiatek drivers.
   * Add support of the direct access mode for the Cadence QSPI controller.
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Merge tag 'mtd/for-4.16' of git://git.infradead.org/linux-mtd

Pull MTD updates from Boris Brezillon:
 "MTD core changes:
   - Rework core functions to avoid duplicating generic checks in
     NAND/OneNAND sub-layers
   - Update the MAINTAINERS entry to reflect the fact that MTD
     maintainers now use a single git tree

  MTD driver changes:
   - CFI: use macros instead of inline functions to limit stack usage
     and make KASAN happy

  NAND core changes:
   - Fix NAND_CMD_NONE handling in nand_command[_lp]() hooks
   - Introduce the ->exec_op() infrastructure
   - Rework NAND buffers handling
   - Fix ECC requirements for K9F4G08U0D
   - Fix nand_do_read_oob() to return the number of bitflips
   - Mark K9F1G08U0E as not supporting subpage writes

  NAND driver changes:
   - MTK: Rework the driver to support new IP versions
   - OMAP OneNAND: Full rework to use new APIs (libgpio, dmaengine) and
     fix DT support
   - Marvell: Add a new driver to replace the pxa3xx one

  SPI NOR core changes:
   - Add support to new ISSI and Cypress/Spansion memory parts.
   - Fix support of Micron memories by checking error bits in the FSR.
   - Fix update of block-protection bits by reading back the SR.
   - Restore the internal state of the SPI flash memory when removing
     the device.

  SPI NOR driver changes:
   - Maintenance for Freescale, Intel and Metiatek drivers.
   - Add support of the direct access mode for the Cadence QSPI
     controller"

* tag 'mtd/for-4.16' of git://git.infradead.org/linux-mtd: (93 commits)
  mtd: nand: sunxi: Fix ECC strength choice
  mtd: nand: gpmi: Fix subpage reads
  mtd: nand: Fix build issues due to an anonymous union
  mtd: nand: marvell: Fix missing memory allocation modifier
  mtd: nand: marvell: remove redundant variable 'oob_len'
  mtd: nand: marvell: fix spelling mistake: "suceed"-> "succeed"
  mtd: onenand: omap2: Remove redundant dev_err call in omap2_onenand_probe()
  mtd: Remove duplicate checks on mtd_oob_ops parameter
  mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
  mtd: mtdpart: Make ECC stat handling consistent
  mtd: onenand: omap2: print resource using %pR format string
  mtd: mtk-nor: modify functions' name more generally
  mtd: onenand: samsung: remove incorrect __iomem annotation
  MAINTAINERS: Add entry for Marvell NAND controller driver
  ARM: OMAP2+: Remove gpmc-onenand
  mtd: onenand: omap2: Configure driver from DT
  mtd: onenand: omap2: Decouple DMA enabling from INT pin availability
  mtd: onenand: omap2: Do not make delay for GPIO OMAP3 specific
  mtd: onenand: omap2: Convert to use dmaengine for memcpy
  mtd: onenand: omap2: Unify OMAP2 and OMAP3 DMA implementation
  ...
 2018-01-29 11:11:56 -08:00
Linus Torvalds
aa5e75bc7a - Fix-ups 
- Deprecate pci_get_bus_and_slot(); apple_bl
 
  - Bug Fixes
    - Enable Chip Select	when conducting	SPI transfers; corgi_lcd, tdo24m, tosa_lcd
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Merge tag 'for-backlight-next-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

Pull backlight updates from Lee Jones:
 "Fix-ups:
   - Deprecate pci_get_bus_and_slot() in apple_bl

  Bug Fixes:
   - Enable Chip Select when conducting SPI transfers in corgi_lcd,
     tdo24m, tosa_lcd"

* tag 'for-backlight-next-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: tdo24m: Fix the SPI CS between transfers
  backlight: apple_bl: Deprecate pci_get_bus_and_slot()
 2018-01-29 11:07:22 -08:00
Linus Torvalds
bc4e118355 - New Drivers 
- Add support for RAVE Supervisory Processor
 
  - (Re)moved drivers
    - Move Realtek Card Reader Driver to Misc
 
  - New Device Support
    - Add support for Pinctrl to axp20x
 
  - New Functionality
    - Add resume support; atmel-flexcom
 
  - Fix-ups
    - Split MFD (mfd) and userspace handlers (platform); cros_ec
    - Fix trivial (whitespace, spelling) issue(s); pcf50633-core
    - Clean-up error handling; ab8500-debugfs
    - General tidying up; tmio_core
    - Kconfig fix-ups; qcom-pm8xxx
    - Licensing changes (SPDX); stm32-lptimer, stm32-timers
    - Device Tree fixups; mc13xxx
    - Simplify/remove unused code; cros_ec_spi, axp20x, ti_am335x_tscadc,
                                   kempld-core, intel_soc_pmic_core.c,
 				  ab8500-debugfs
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Merge tag 'mfd-next-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Drivers:
   - Add support for RAVE Supervisory Processor

  Moved drivers:
   - Move Realtek Card Reader Driver to Misc

  New Device Support:
   - Add support for Pinctrl to axp20x

  New Functionality:
   - Add resume support to atmel-flexcom

  Fix-ups:
   - Split MFD (mfd) and userspace handlers (platform) in cros_ec
   - Fix trivial (whitespace, spelling) issue(s) in pcf50633-core
   - Clean-up error handling in ab8500-debugfs
   - General tidying up in tmio_core
   - Kconfig fix-ups for qcom-pm8xxx
   - Licensing changes (SPDX) to stm32-lptimer, stm32-timers
   - Device Tree fixups in mc13xxx
   - Simplify/remove unused code in cros_ec_spi, axp20x, ti_am335x_tscadc,
     kempld-core, intel_soc_pmic_core.c, ab8500-debugfs"

* tag 'mfd-next-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (32 commits)
  mfd: lpc_ich: Do not touch SPI-NOR write protection bit on Apollo Lake
  mfd: axp20x: Mark axp288 CHRG_BAK_CTRL register volatile
  mfd: ab8500: Introduce DEFINE_SHOW_ATTRIBUTE() macro
  atmel_flexcom: Support resuming after a chip reset
  mfd: Remove duplicate includes
  dt-bindings: mfd: mc13xxx: Add the unit address to sysled
  mfd: stm32: Adopt SPDX identifier
  mfd: axp20x: Add pinctrl cell for AXP813
  mfd: pm8xxx: Make elegible for COMPILE_TEST
  mfd: kempld-core: Use resource_size function on resource object
  mfd: tmio: Move register macros to tmio_core.c
  mfd: cros ec: spi: Simplify delay handling between SPI messages
  mfd: palmas: Assign the right powerhold mask for tps65917
  mfd: ab8500-debugfs: Use common error handling code in ab8500_print_modem_registers()
  mfd: ti_am335x_tscadc: Remove redundant assignment to node
  mfd: pcf50633: Fix spelling mistake: 'Falied' -> 'Failed'
  dt-bindings: watchdog: Add bindings for RAVE SP watchdog driver
  watchdog: Add RAVE SP watchdog driver
  mfd: Add driver for RAVE Supervisory Processor
  serdev: Introduce devm_serdev_device_open()
  ...
 2018-01-29 10:59:24 -08:00
Linus Torvalds
1c7385dbf8 PNP updates for v4.16-rc1 
These make pnpbios_thread_init() use PTR_ERR_OR_ZERO() and remove
 an unnecessary kallsyms include from drivers/pnp/quirks.c (Vasyl
 Gomonovych, Sergey Senozhatsky).
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Merge tag 'pnp-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull PNP updates from Rafael Wysocki:
 "These make pnpbios_thread_init() use PTR_ERR_OR_ZERO() and remove an
  unnecessary kallsyms include from drivers/pnp/quirks.c (Vasyl
  Gomonovych, Sergey Senozhatsky)"

* tag 'pnp-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PNP: pnpbios: Use PTR_ERR_OR_ZERO()
  PNP: remove unneeded kallsyms include
 2018-01-29 10:47:31 -08:00
Anand Jain
3acbcbfc8f btrfs: drop devid as device_list_add() arg 
As struct btrfs_disk_super is being passed, so it can get devid
the same way its parent does.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2018-01-29 19:31:16 +01:00
Anand Jain
e124ece53e btrfs: get device pointer from device_list_add() 
Instead of pointer to btrfs_fs_devices as an arg in device_list_add()
better to get pointer to btrfs_device as return value, then we have
both, pointer to btrfs_device and btrfs_fs_devices. btrfs_device is
needed to handle reappearing missing device.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
 2018-01-29 19:31:15 +01:00
Linus Torvalds
1a9a126b50 ACPI updates for v4.16-rc1 
- Update the ACPICA kernel code to upstream revision 20171215 including:
    * Support for ACPI 6.0A changes in the NFIT table (Bob Moore).
    * Local 64-bit divide in string conversions (Bob Moore).
    * Fix for a regression in acpi_evaluate_object_type() (Bob Moore).
    * Fixes for memory leaks during package object resolution (Bob Moore).
    * Deployment of safe version of strncpy() (Bob Moore).
    * Debug and messaging updates (Bob Moore).
    * Support for PDTT, SDEV, TPM2 tables in iASL and tools (Bob Moore).
    * Null pointer dereference avoidance in Op and cleanups (Colin Ian King).
    * Fix for memory leak from building prefixed pathname (Erik Schmauss).
    * Coding style fixes, disassembler and compiler updates (Hanjun Guo,
      Erik Schmauss).
    * Additional PPTT flags from ACPI 6.2 (Jeremy Linton).
    * Fix for an off-by-one error in acpi_get_timer_duration() (Jung-uk Kim).
    * Infinite loop detection timeout and utilities cleanups (Lv Zheng).
    * Windows 10 version 1607 and 1703 OSI strings (Mario Limonciello).
 
  - Update ACPICA information in MAINTAINERS to reflect the current
    status of ACPICA maintenance and rename a local variable in one
    function to match the corresponding upstream code (Rafael Wysocki).
 
  - Clean up ACPI-related initialization on x86 (Andy Shevchenko).
 
  - Add support for Intel Merrifield to the ACPI GPIO code (Andy
    Shevchenko).
 
  - Clean up ACPI PMIC drivers (Andy Shevchenko, Arvind Yadav).
 
  - Fix the ACPI Generic Event Device (GED) driver to free IRQs on
    shutdown and clean up the PCI IRQ Link driver (Sinan Kaya).
 
  - Make the GHES code call into the AER driver on all errors and
    clean up the ACPI APEI code (Colin Ian King, Tyler Baicar).
 
  - Make the IA64 ACPI NUMA code parse all SRAT entries (Ganapatrao
    Kulkarni).
 
  - Add a lid switch blacklist to the ACPI button driver and make it
    print extra debug messages on lid events (Hans de Goede).
 
  - Add quirks for Asus GL502VSK and UX305LA to the ACPI battery
    driver and clean it up somewhat (Bjørn Mork, Kai-Heng Feng).
 
  - Add device link for CHT SD card dependency on I2C to the ACPI
    LPSS (Intel SoCs) driver and make it avoid creating platform
    device objects for devices without MMIO resources (Adrian Hunter,
    Hans de Goede).
 
  - Fix the ACPI GPE mask kernel command line parameter handling
    (Prarit Bhargava).
 
  - Fix the handling of (incorrectly exposed) backlight interfaces
    without LCD (Hans de Goede).
 
  - Fix the usage of debugfs_create_*() in the ACPI EC driver (Geert
    Uytterhoeven).
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Merge tag 'acpi-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "The majority of this is an update of the ACPICA kernel code to
  upstream revision 20171215 with a cosmetic change and a maintainers
  information update on top of it.

  The rest is mostly some minor fixes and cleanups in the ACPI drivers
  and cleanups to initialization on x86.

  Specifics:

   - Update the ACPICA kernel code to upstream revision 20171215 including:
      * Support for ACPI 6.0A changes in the NFIT table (Bob Moore)
      * Local 64-bit divide in string conversions (Bob Moore)
      * Fix for a regression in acpi_evaluate_object_type() (Bob Moore)
      * Fixes for memory leaks during package object resolution (Bob
        Moore)
      * Deployment of safe version of strncpy() (Bob Moore)
      * Debug and messaging updates (Bob Moore)
      * Support for PDTT, SDEV, TPM2 tables in iASL and tools (Bob
        Moore)
      * Null pointer dereference avoidance in Op and cleanups (Colin Ian
        King)
      * Fix for memory leak from building prefixed pathname (Erik
        Schmauss)
      * Coding style fixes, disassembler and compiler updates (Hanjun
        Guo, Erik Schmauss)
      * Additional PPTT flags from ACPI 6.2 (Jeremy Linton)
      * Fix for an off-by-one error in acpi_get_timer_duration()
        (Jung-uk Kim)
      * Infinite loop detection timeout and utilities cleanups (Lv
        Zheng)
      * Windows 10 version 1607 and 1703 OSI strings (Mario
        Limonciello)

   - Update ACPICA information in MAINTAINERS to reflect the current
     status of ACPICA maintenance and rename a local variable in one
     function to match the corresponding upstream code (Rafael Wysocki)

   - Clean up ACPI-related initialization on x86 (Andy Shevchenko)

   - Add support for Intel Merrifield to the ACPI GPIO code (Andy
     Shevchenko)

   - Clean up ACPI PMIC drivers (Andy Shevchenko, Arvind Yadav)

   - Fix the ACPI Generic Event Device (GED) driver to free IRQs on
     shutdown and clean up the PCI IRQ Link driver (Sinan Kaya)

   - Make the GHES code call into the AER driver on all errors and clean
     up the ACPI APEI code (Colin Ian King, Tyler Baicar)

   - Make the IA64 ACPI NUMA code parse all SRAT entries (Ganapatrao
     Kulkarni)

   - Add a lid switch blacklist to the ACPI button driver and make it
     print extra debug messages on lid events (Hans de Goede)

   - Add quirks for Asus GL502VSK and UX305LA to the ACPI battery driver
     and clean it up somewhat (Bjørn Mork, Kai-Heng Feng)

   - Add device link for CHT SD card dependency on I2C to the ACPI LPSS
     (Intel SoCs) driver and make it avoid creating platform device
     objects for devices without MMIO resources (Adrian Hunter, Hans de
     Goede)

   - Fix the ACPI GPE mask kernel command line parameter handling
     (Prarit Bhargava)

   - Fix the handling of (incorrectly exposed) backlight interfaces
     without LCD (Hans de Goede)

   - Fix the usage of debugfs_create_*() in the ACPI EC driver (Geert
     Uytterhoeven)"

* tag 'acpi-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (62 commits)
  ACPI/PCI: pci_link: reduce verbosity when IRQ is enabled
  ACPI / LPSS: Do not instiate platform_dev for devs without MMIO resources
  ACPI / PMIC: Convert to use builtin_platform_driver() macro
  ACPI / x86: boot: Propagate error code in acpi_gsi_to_irq()
  ACPICA: Update version to 20171215
  ACPICA: trivial style fix, no functional change
  ACPICA: Fix a couple memory leaks during package object resolution
  ACPICA: Recognize the Windows 10 version 1607 and 1703 OSI strings
  ACPICA: DT compiler: prevent error if optional field at the end of table is not present
  ACPICA: Rename a global variable, no functional change
  ACPICA: Create and deploy safe version of strncpy
  ACPICA: Cleanup the global variables and update comments
  ACPICA: Debugger: fix slight indentation issue
  ACPICA: Fix a regression in the acpi_evaluate_object_type() interface
  ACPICA: Update for a few debug output statements
  ACPICA: Debug output, no functional change
  ACPI: EC: Fix debugfs_create_*() usage
  ACPI / video: Default lcd_only to true on Win8-ready and newer machines
  ACPI / x86: boot: Don't setup SCI on HW-reduced platforms
  ACPI / x86: boot: Use INVALID_ACPI_IRQ instead of 0 for acpi_sci_override_gsi
  ...
 2018-01-29 10:17:53 -08:00
Linus Torvalds
7f3fdd40a7 Power management updates for v4.16-rc1 
- Define a PM driver flag allowing drivers to request that their
    devices be left in suspend after system-wide transitions to the
    working state if possible and add support for it to the PCI bus
    type and the ACPI PM domain (Rafael Wysocki).
 
  - Make the PM core carry out optimizations for devices with driver
    PM flags set in some cases and make a few drivers set those flags
    (Rafael Wysocki).
 
  - Fix and clean up wrapper routines allowing runtime PM device
    callbacks to be re-used for system-wide PM, change the generic
    power domains (genpd) framework to stop using those routines
    incorrectly and fix up a driver depending on that behavior of
    genpd (Rafael Wysocki, Ulf Hansson, Geert Uytterhoeven).
 
  - Fix and clean up the PM core's device wakeup framework and
    re-factor system-wide PM core code related to device wakeup
    (Rafael Wysocki, Ulf Hansson, Brian Norris).
 
  - Make more x86-based systems use the Low Power Sleep S0 _DSM
    interface by default (to fix power button wakeup from
    suspend-to-idle on Surface Pro3) and add a kernel command line
    switch to tell it to ignore the system sleep blacklist in the
    ACPI core (Rafael Wysocki).
 
  - Fix a race condition related to cpufreq governor module removal
    and clean up the governor management code in the cpufreq core
    (Rafael Wysocki).
 
  - Drop the unused generic code related to the handling of the static
    power energy usage model in the CPU cooling thermal driver along
    with the corresponding documentation (Viresh Kumar).
 
  - Add mt2712 support to the Mediatek cpufreq driver (Andrew-sh Cheng).
 
  - Add a new operating point to the imx6ul and imx6q cpufreq drivers
    and switch the latter to using clk_bulk_get() (Anson Huang, Dong
    Aisheng).
 
  - Add support for multiple regulators to the TI cpufreq driver along
    with a new DT binding related to that and clean up that driver
    somewhat (Dave Gerlach).
 
  - Fix a powernv cpufreq driver regression leading to incorrect CPU
    frequency reporting, fix that driver to deal with non-continguous
    P-states correctly and clean it up (Gautham Shenoy, Shilpasri Bhat).
 
  - Add support for frequency scaling on Armada 37xx SoCs through the
    generic DT cpufreq driver (Gregory CLEMENT).
 
  - Fix error code paths in the mvebu cpufreq driver (Gregory CLEMENT).
 
  - Fix a transition delay setting regression in the longhaul cpufreq
    driver (Viresh Kumar).
 
  - Add Skylake X (server) support to the intel_pstate cpufreq driver
    and clean up that driver somewhat (Srinivas Pandruvada).
 
  - Clean up the cpufreq statistics collection code (Viresh Kumar).
 
  - Drop cluster terminology and dependency on physical_package_id
    from the PSCI driver and drop dependency on arm_big_little from
    the SCPI cpufreq driver (Sudeep Holla).
 
  - Add support for system-wide suspend and resume to the RAPL power
    capping driver and drop a redundant semicolon from it (Zhen Han,
    Luis de Bethencourt).
 
  - Make SPI domain validation (in the SCSI SPI transport driver) and
    system-wide suspend mutually exclusive as they rely on the same
    underlying mechanism and cannot be carried out at the same time
    (Bart Van Assche).
 
  - Fix the computation of the amount of memory to preallocate in the
    hibernation core and clean up one function in there (Rainer Fiebig,
    Kyungsik Lee).
 
  - Prepare the Operating Performance Points (OPP) framework for being
    used with power domains and clean up one function in it (Viresh
    Kumar, Wei Yongjun).
 
  - Clean up the generic sysfs interface for device PM (Andy Shevchenko).
 
  - Fix several minor issues in power management frameworks and clean
    them up a bit (Arvind Yadav, Bjorn Andersson, Geert Uytterhoeven,
    Gustavo Silva, Julia Lawall, Luis de Bethencourt, Paul Gortmaker,
    Sergey Senozhatsky, gaurav jindal).
 
  - Make it easier to disable PM via Kconfig (Mark Brown).
 
  - Clean up the cpupower and intel_pstate_tracer utilities (Doug
    Smythies, Laura Abbott).
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Merge tag 'pm-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "This includes some infrastructure changes in the PM core, mostly
  related to integration between runtime PM and system-wide suspend and
  hibernation, plus some driver changes depending on them and fixes for
  issues in that area which have become quite apparent recently.

  Also included are changes making more x86-based systems use the Low
  Power Sleep S0 _DSM interface by default, which turned out to be
  necessary to handle power button wakeups from suspend-to-idle on
  Surface Pro3.

  On the cpufreq front we have fixes and cleanups in the core, some new
  hardware support, driver updates and the removal of some unused code
  from the CPU cooling thermal driver.

  Apart from this, the Operating Performance Points (OPP) framework is
  prepared to be used with power domains in the future and there is a
  usual bunch of assorted fixes and cleanups.

  Specifics:

   - Define a PM driver flag allowing drivers to request that their
     devices be left in suspend after system-wide transitions to the
     working state if possible and add support for it to the PCI bus
     type and the ACPI PM domain (Rafael Wysocki).

   - Make the PM core carry out optimizations for devices with driver PM
     flags set in some cases and make a few drivers set those flags
     (Rafael Wysocki).

   - Fix and clean up wrapper routines allowing runtime PM device
     callbacks to be re-used for system-wide PM, change the generic
     power domains (genpd) framework to stop using those routines
     incorrectly and fix up a driver depending on that behavior of genpd
     (Rafael Wysocki, Ulf Hansson, Geert Uytterhoeven).

   - Fix and clean up the PM core's device wakeup framework and
     re-factor system-wide PM core code related to device wakeup
     (Rafael Wysocki, Ulf Hansson, Brian Norris).

   - Make more x86-based systems use the Low Power Sleep S0 _DSM
     interface by default (to fix power button wakeup from
     suspend-to-idle on Surface Pro3) and add a kernel command line
     switch to tell it to ignore the system sleep blacklist in the ACPI
     core (Rafael Wysocki).

   - Fix a race condition related to cpufreq governor module removal and
     clean up the governor management code in the cpufreq core (Rafael
     Wysocki).

   - Drop the unused generic code related to the handling of the static
     power energy usage model in the CPU cooling thermal driver along
     with the corresponding documentation (Viresh Kumar).

   - Add mt2712 support to the Mediatek cpufreq driver (Andrew-sh
     Cheng).

   - Add a new operating point to the imx6ul and imx6q cpufreq drivers
     and switch the latter to using clk_bulk_get() (Anson Huang, Dong
     Aisheng).

   - Add support for multiple regulators to the TI cpufreq driver along
     with a new DT binding related to that and clean up that driver
     somewhat (Dave Gerlach).

   - Fix a powernv cpufreq driver regression leading to incorrect CPU
     frequency reporting, fix that driver to deal with non-continguous
     P-states correctly and clean it up (Gautham Shenoy, Shilpasri
     Bhat).

   - Add support for frequency scaling on Armada 37xx SoCs through the
     generic DT cpufreq driver (Gregory CLEMENT).

   - Fix error code paths in the mvebu cpufreq driver (Gregory CLEMENT).

   - Fix a transition delay setting regression in the longhaul cpufreq
     driver (Viresh Kumar).

   - Add Skylake X (server) support to the intel_pstate cpufreq driver
     and clean up that driver somewhat (Srinivas Pandruvada).

   - Clean up the cpufreq statistics collection code (Viresh Kumar).

   - Drop cluster terminology and dependency on physical_package_id from
     the PSCI driver and drop dependency on arm_big_little from the SCPI
     cpufreq driver (Sudeep Holla).

   - Add support for system-wide suspend and resume to the RAPL power
     capping driver and drop a redundant semicolon from it (Zhen Han,
     Luis de Bethencourt).

   - Make SPI domain validation (in the SCSI SPI transport driver) and
     system-wide suspend mutually exclusive as they rely on the same
     underlying mechanism and cannot be carried out at the same time
     (Bart Van Assche).

   - Fix the computation of the amount of memory to preallocate in the
     hibernation core and clean up one function in there (Rainer Fiebig,
     Kyungsik Lee).

   - Prepare the Operating Performance Points (OPP) framework for being
     used with power domains and clean up one function in it (Viresh
     Kumar, Wei Yongjun).

   - Clean up the generic sysfs interface for device PM (Andy
     Shevchenko).

   - Fix several minor issues in power management frameworks and clean
     them up a bit (Arvind Yadav, Bjorn Andersson, Geert Uytterhoeven,
     Gustavo Silva, Julia Lawall, Luis de Bethencourt, Paul Gortmaker,
     Sergey Senozhatsky, gaurav jindal).

   - Make it easier to disable PM via Kconfig (Mark Brown).

   - Clean up the cpupower and intel_pstate_tracer utilities (Doug
     Smythies, Laura Abbott)"

* tag 'pm-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (89 commits)
  PCI / PM: Remove spurious semicolon
  cpufreq: scpi: remove arm_big_little dependency
  drivers: psci: remove cluster terminology and dependency on physical_package_id
  powercap: intel_rapl: Fix trailing semicolon
  dmaengine: rcar-dmac: Make DMAC reinit during system resume explicit
  PM / runtime: Allow no callbacks in pm_runtime_force_suspend|resume()
  PM / hibernate: Drop unused parameter of enough_swap
  PM / runtime: Check ignore_children in pm_runtime_need_not_resume()
  PM / runtime: Rework pm_runtime_force_suspend/resume()
  PM / genpd: Stop/start devices without pm_runtime_force_suspend/resume()
  cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
  cpufreq: intel_pstate: Add Skylake servers support
  cpufreq: intel_pstate: Replace bxt_funcs with core_funcs
  platform/x86: surfacepro3: Support for wakeup from suspend-to-idle
  ACPI / PM: Use Low Power S0 Idle on more systems
  PM / wakeup: Print warn if device gets enabled as wakeup source during sleep
  PM / domains: Don't skip driver's ->suspend|resume_noirq() callbacks
  PM / core: Propagate wakeup_path status flag in __device_suspend_late()
  PM / core: Re-structure code for clearing the direct_complete flag
  powercap: add suspend and resume mechanism for SOC power limit
  ...
 2018-01-29 09:47:41 -08:00
Linus Torvalds
1c1f395b28 sound updates for 4.16-rc1 
The major changes in the core API side in this cycle are the still
 on-going ASoC componentization works.  Other than that, only few small
 changes such as 20bit PCM format support are found.
 
 Meanwhile the rest majority of changes are for ASoC drivers:
 - Large cleanups of some of the TI CODEC drivers
 - Continued work on Intel ASoC stuff for new quirks, ACPI GPIO
   handling, Kconfigs and lots of cleanups
 - Refactoring of the Freescale SSI driver, as preliminary work for the
   upcoming changes
 - Work on ST DFSDM driver, including the required IIO patches
 - New drivers for Allwinner A83T, Maxim MAX89373, SocioNext UiniPhier
   EVEA Tempo Semiconductor TSCS42xx and TI PCM816x, TAS5722 and TAS6424
   devices
 - Removal of dead codes for SN95031 and board drivers
 
 Last but not least, a few HD-audio and USB-audio quirks are included
 as usual, too.
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Merge tag 'sound-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "The major changes in the core API side in this cycle are the still
  on-going ASoC componentization works. Other than that, only few small
  changes such as 20bit PCM format support are found.

  Meanwhile the rest majority of changes are for ASoC drivers:

   - Large cleanups of some of the TI CODEC drivers

   - Continued work on Intel ASoC stuff for new quirks, ACPI GPIO
     handling, Kconfigs and lots of cleanups

   - Refactoring of the Freescale SSI driver, as preliminary work for
     the upcoming changes

   - Work on ST DFSDM driver, including the required IIO patches

   - New drivers for Allwinner A83T, Maxim MAX89373, SocioNext UiniPhier
     EVEA Tempo Semiconductor TSCS42xx and TI PCM816x, TAS5722 and
     TAS6424 devices

   - Removal of dead codes for SN95031 and board drivers

  Last but not least, a few HD-audio and USB-audio quirks are included
  as usual, too"

* tag 'sound-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (303 commits)
  ALSA: hda - Reduce the suspend time consumption for ALC256
  ASoC: use seq_file to dump the contents of dai_list,platform_list and codec_list
  ASoC: soc-core: add missing EXPORT_SYMBOL_GPL() for snd_soc_rtdcom_lookup
  IIO: ADC: stm32-dfsdm: remove unused variable again
  ASoC: bcm2835: fix hw_params error when device is in prepared state
  ASoC: mxs-sgtl5000: Do not print error on probe deferral
  ASoC: sgtl5000: Do not print error on probe deferral
  ASoC: Intel: remove select on non-existing SND_SOC_INTEL_COMMON
  ALSA: usb-audio: Support changing input on Sound Blaster E1
  ASoC: Intel: remove second duplicated assignment to pointer 'res'
  ALSA: hda/realtek - update ALC215 depop optimize
  ALSA: hda/realtek - Support headset mode for ALC215/ALC285/ALC289
  ALSA: pcm: Fix trailing semicolon
  ASoC: add Component level .read/.write
  ASoC: cx20442: fix regression by adding back .read/.write
  ASoC: uda1380: fix regression by adding back .read/.write
  ASoC: tlv320dac33: fix regression by adding back .read/.write
  ALSA: hda - Use IS_REACHABLE() for dependency on input
  IIO: ADC: stm32-dfsdm: fix static check warning
  IIO: ADC: stm32-dfsdm: code optimization
  ...
 2018-01-29 09:41:47 -08:00
Linus Torvalds
49f9c3552c init_task out-of-lining 
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Merge tag 'init_task-20180117' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull init_task initializer cleanups from David Howells:
 "It doesn't seem useful to have the init_task in a header file rather
  than in a normal source file. We could consolidate init_task handling
  instead and expand out various macros.

  Here's a series of patches that consolidate init_task handling:

   (1) Make THREAD_SIZE available to vmlinux.lds for cris, hexagon and
       openrisc.

   (2) Alter the INIT_TASK_DATA linker script macro to set
       init_thread_union and init_stack rather than defining these in C.

       Insert init_task and init_thread_into into the init_stack area in
       the linker script as appropriate to the configuration, with
       different section markers so that they end up correctly ordered.

       We can then get merge ia64's init_task.c into the main one.

       We then have a bunch of single-use INIT_*() macros that seem only
       to be macros because they used to be used per-arch. We can then
       expand these in place of the user and get rid of a few lines and
       a lot of backslashes.

   (3) Expand INIT_TASK() in place.

   (4) Expand in place various small INIT_*() macros that are defined
       conditionally. Expand them and surround them by #if[n]def/#endif
       in the .c file as it takes fewer lines.

   (5) Expand INIT_SIGNALS() and INIT_SIGHAND() in place.

   (6) Expand INIT_STRUCT_PID in place.

  These macros can then be discarded"

* tag 'init_task-20180117' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  Expand INIT_STRUCT_PID and remove
  Expand the INIT_SIGNALS and INIT_SIGHAND macros and remove
  Expand various INIT_* macros and remove
  Expand INIT_TASK() in init/init_task.c and remove
  Construct init thread stack in the linker script rather than by union
  openrisc: Make THREAD_SIZE available to vmlinux.lds
  hexagon: Make THREAD_SIZE available to vmlinux.lds
  cris: Make THREAD_SIZE available to vmlinux.lds
 2018-01-29 09:08:34 -08:00
Jeff Layton
f02a9ad1f1 fs: handle inode->i_version more efficiently 
Since i_version is mostly treated as an opaque value, we can exploit that
fact to avoid incrementing it when no one is watching. With that change,
we can avoid incrementing the counter on writes, unless someone has
queried for it since it was last incremented. If the a/c/mtime don't
change, and the i_version hasn't changed, then there's no need to dirty
the inode metadata on a write.

Convert the i_version counter to an atomic64_t, and use the lowest order
bit to hold a flag that will tell whether anyone has queried the value
since it was last incremented.

When we go to maybe increment it, we fetch the value and check the flag
bit.  If it's clear then we don't need to do anything if the update
isn't being forced.

If we do need to update, then we increment the counter by 2, and clear
the flag bit, and then use a CAS op to swap it into place. If that
works, we return true. If it doesn't then do it again with the value
that we fetch from the CAS operation.

On the query side, if the flag is already set, then we just shift the
value down by 1 bit and return it. Otherwise, we set the flag in our
on-stack value and again use cmpxchg to swap it into place if it hasn't
changed. If it has, then we use the value from the cmpxchg as the new
"old" value and try again.

This method allows us to avoid incrementing the counter on writes (and
dirtying the metadata) under typical workloads. We only need to increment
if it has been queried since it was last changed.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Dave Chinner <dchinner@redhat.com>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
 2018-01-29 06:42:21 -05:00
Jeff Layton
3a8c7231d5 btrfs: only dirty the inode in btrfs_update_time if something was changed 
At this point, we know that "now" and the file times may differ, and we
suspect that the i_version has been flagged to be bumped. Attempt to
bump the i_version, and only mark the inode dirty if that actually
occurred or if one of the times was updated.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: David Sterba <dsterba@suse.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
 2018-01-29 06:42:21 -05:00
Jeff Layton
d17260fd5f xfs: avoid setting XFS_ILOG_CORE if i_version doesn't need incrementing 
If XFS_ILOG_CORE is already set then go ahead and increment it.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Dave Chinner <dchinner@redhat.com>
 2018-01-29 06:42:21 -05:00
Jeff Layton
e38cf302b2 fs: only set S_VERSION when updating times if necessary 
We only really need to update i_version if someone has queried for it
since we last incremented it. By doing that, we can avoid having to
update the inode if the times haven't changed.

If the times have changed, then we go ahead and forcibly increment the
counter, under the assumption that we'll be going to the storage
anyway, and the increment itself is relatively cheap.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
 2018-01-29 06:42:21 -05:00
Jeff Layton
3b370b215f IMA: switch IMA over to new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
 2018-01-29 06:42:21 -05:00
Jeff Layton
f0e2828062 xfs: convert to new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Dave Chinner <dchinner@redhat.com>
 2018-01-29 06:42:21 -05:00
Jeff Layton
bb8c2d66bc ufs: use new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
 2018-01-29 06:42:21 -05:00
Jeff Layton
cc56c33e78 ocfs2: convert to new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
 2018-01-29 06:42:21 -05:00
Jeff Layton
1f15a550f5 nfsd: convert to new i_version API 
Mostly just making sure we use the "get" wrappers so we know when
it is being fetched for later use.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
 2018-01-29 06:42:21 -05:00
Jeff Layton
1eb5d98f16 nfs: convert to new i_version API 
For NFS, we just use the "raw" API since the i_version is mostly
managed by the server. The exception there is when the client
holds a write delegation, but we only need to bump it once
there anyway to handle CB_GETATTR.

Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
 2018-01-29 06:42:21 -05:00
Jeff Layton
ee73f9a52a ext4: convert to new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Theodore Ts'o <tytso@mit.edu>
 2018-01-29 06:42:21 -05:00
Jeff Layton
e1d747d9b6 ext2: convert to new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
 2018-01-29 06:42:20 -05:00
Jeff Layton
317bc94780 exofs: switch to new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
 2018-01-29 06:42:20 -05:00
Jeff Layton
c7f88c4e78 btrfs: convert to new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: David Sterba <dsterba@suse.com>
 2018-01-29 06:42:20 -05:00
Jeff Layton
a01179e6eb afs: convert to new i_version API 
For AFS, it's generally treated as an opaque value, so we use the
*_raw variants of the API here.

Note that AFS has quite a different definition for this counter. AFS
only increments it on changes to the data to the data in regular files
and contents of the directories. Inode metadata changes do not result
in a version increment.

We'll need to reconcile that somehow if we ever want to present this to
userspace via statx.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
 2018-01-29 06:42:20 -05:00
Jeff Layton
9dffe569d9 affs: convert to new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
 2018-01-29 06:42:20 -05:00
Jeff Layton
2489dbabea fat: convert to new i_version API 
Signed-off-by: Jeff Layton <jlayton@redhat.com>
 2018-01-29 06:42:20 -05:00
Jeff Layton
7594c46116 fs: don't take the i_lock in inode_inc_iversion 
The rationale for taking the i_lock when incrementing this value is
lost in antiquity. The readers of the field don't take it (at least
not universally), so my assumption is that it was only done here to
serialize incrementors.

If that is indeed the case, then we can drop the i_lock from this
codepath and treat it as a atomic64_t for the purposes of
incrementing it. This allows us to use inode_inc_iversion without
any danger of lock inversion.

Note that the read side is not fetched atomically with this change.
The assumption here is that that is not a critical issue since the
i_version is not fully synchronized with anything else anyway.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
 2018-01-29 06:42:20 -05:00
Jeff Layton
ae5e165d85 fs: new API for handling inode->i_version 
Add a documentation blob that explains what the i_version field is, how
it is expected to work, and how it is currently implemented by various
filesystems.

We already have inode_inc_iversion. Add several other functions for
manipulating and accessing the i_version counter. For now, the
implementation is trivial and basically works the way that all of the
open-coded i_version accesses work today.

Future patches will convert existing users of i_version to use the new
API, and then convert the backend implementation to do things more
efficiently.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
 2018-01-29 06:41:30 -05:00
Boris Brezillon
571cb17b23 Core changes: 
* Fix NAND_CMD_NONE handling in nand_command[_lp]() hooks
 * Introduce the ->exec_op() infrastructure
 * Rework NAND buffers handling
 * Fix ECC requirements for K9F4G08U0D
 * Fix nand_do_read_oob() to return the number of bitflips
 * Mark K9F1G08U0E as not supporting subpage writes
 
 Driver changes:
 * MTK: Rework the driver to support new IP versions
 * OMAP OneNAND: Full rework to use new APIs (libgpio, dmaengine) and fix
   DT support
 * Marvell: Add a new driver to replace the pxa3xx one
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Merge tag 'nand/for-4.16' of git://git.infradead.org/linux-mtd into mtd/next

Pull NAND changes from Boris Brezillon:

"
  Core changes:
  * Fix NAND_CMD_NONE handling in nand_command[_lp]() hooks
  * Introduce the ->exec_op() infrastructure
  * Rework NAND buffers handling
  * Fix ECC requirements for K9F4G08U0D
  * Fix nand_do_read_oob() to return the number of bitflips
  * Mark K9F1G08U0E as not supporting subpage writes

  Driver changes:
  * MTK: Rework the driver to support new IP versions
  * OMAP OneNAND: Full rework to use new APIs (libgpio, dmaengine) and fix
    DT support
  * Marvell: Add a new driver to replace the pxa3xx one
"
 2018-01-29 09:58:36 +01:00
Boris Brezillon
c8f22b02a8 This pull-request contains the following notable changes: 
Core changes:
 * Add support to new ISSI and Cypress/Spansion memory parts.
 * Fix support of Micron memories by checking error bits in the FSR.
 * Fix update of block-protection bits by reading back the SR.
 * Restore the internal state of the SPI flash memory when removing the
   device.
 
 Driver changes:
 * Maintenance for Freescale, Intel and Metiatek drivers.
 * Add support of the direct access mode for the Cadence QSPI controller.
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Merge tag 'spi-nor/for-4.16' of git://git.infradead.org/linux-mtd into mtd/next

Pull spi-nor changes from Cyrille Pitchen:

"
  This pull-request contains the following notable changes:

  Core changes:
  * Add support to new ISSI and Cypress/Spansion memory parts.
  * Fix support of Micron memories by checking error bits in the FSR.
  * Fix update of block-protection bits by reading back the SR.
  * Restore the internal state of the SPI flash memory when removing the
    device.

  Driver changes:
  * Maintenance for Freescale, Intel and Metiatek drivers.
  * Add support of the direct access mode for the Cadence QSPI controller.
"
 2018-01-29 09:55:14 +01:00
Linus Torvalds
d8a5b80568 Linux 4.15 2018-01-28 13:20:33 -08:00
Linus Torvalds
24b1cccf92 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 
Pull x86 retpoline fixlet from Thomas Gleixner:
 "Remove the ESP/RSP thunks for retpoline as they cannot ever work.

  Get rid of them before they show up in a release"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/retpoline: Remove the esp/rsp thunk
 2018-01-28 12:24:36 -08:00