13 Aug, 2016

3 commits

• 947d2c2cd   PM / sleep: Update some system sleep documentation ... Browse Code »

  Update some documentation related to system sleep to document new
  features and remove outdated information from it.

  Signed-off-by: Rafael J. Wysocki
  Acked-by: Pavel Machek
  Reviewed-by: Chen Yu

  Rafael J. Wysocki

  2016-08-13 08:54:04 +0800  
• c2d5be14c   docs: kernel-documentation: remove some highlight directives ... Browse Code »

  With the conf.py change, we don't need them to avoid warnings anymore.

  Signed-off-by: Jonathan Corbet

  Jonathan Corbet

  2016-08-13 05:12:36 +0800  
• a7a0729c4   docs: Set the Sphinx default highlight language to "guess" ... Browse Code »

  This should eliminate a whole class of markup warnings, at the cost of
  occasionally amusing markup choices; we'll have to see if it works out.

  Suggested-by: Markus Heiser
  Signed-off-by: Jonathan Corbet

  Jonathan Corbet

  2016-08-13 04:11:12 +0800  

12 Aug, 2016

1 commit

• 4a008c002   hwmon: (ftsteutates) Correct ftp urls in driver documentation ... Browse Code »

  Signed-off-by: Thilo Cestonaro
  Signed-off-by: Guenter Roeck

  Thilo Cestonaro

  2016-08-12 20:56:34 +0800  

11 Aug, 2016

1 commit

• 005411ea7   doc: update block/queue-sysfs.txt entries ... Browse Code »

  Add descriptions for dax, io_poll, and write_same_max_bytes files.

  Signed-off-by: Joe Lawrence
  Signed-off-by: Jens Axboe

  Joe Lawrence

  2016-08-11 23:37:23 +0800  

10 Aug, 2016

1 commit

• 8b078c603   PCI: Update "pci=resource_alignment" documentation ... Browse Code »

  Some uio based PCI drivers, e.g., uio_cif, do not work if the assigned PCI
  memory resources are not page aligned. By using the kernel option
  "pci=resource_alignment=@:." it is possible to
  request page alignment for memory resources of devices.

  However, this is cumbersome when using several devices, and the
  bus/slot/func addresses may change if devices are added to or removed from
  the system.

  Extend the "pci=resource_alignment" option so we can specify the relevant
  devices via PCI vendor, device, subvendor, and subdevice IDs. The
  specification of the devices via IDs is indicated by a leading string
  "pci:" as argument to "pci=resource_alignment".

  The format of the specification is
  pci::[::]

  Examples:
  pci=resource_alignment=4096@pci:8086:9c22:103c:198f
  pci=resource_alignment=pci:8086:9c22 # defaults to PAGE_SIZE align

  [bhelgaas: changelog, use actual vendor/device IDs in examples]
  Signed-off-by: Mathias Koehrer
  Signed-off-by: Bjorn Helgaas

  Mathias Koehrer

  2016-08-10 00:59:15 +0800  

08 Aug, 2016

3 commits

• 857953d72   Merge branch 'for-linus' of git://git.kernel.dk/linux-block ... Browse Code »

  Pull more block fixes from Jens Axboe:
  "As mentioned in the pull the other day, a few more fixes for this
  round, all related to the bio op changes in this series.

  Two fixes, and then a cleanup, renaming bio->bi_rw to bio->bi_opf. I
  wanted to do that change right after or right before -rc1, so that
  risk of conflict was reduced. I just rebased the series on top of
  current master, and no new ->bi_rw usage has snuck in"

  * 'for-linus' of git://git.kernel.dk/linux-block:
  block: rename bio bi_rw to bi_opf
  target: iblock_execute_sync_cache() should use bio_set_op_attrs()
  mm: make __swap_writepage() use bio_set_op_attrs()
  block/mm: make bdev_ops->rw_page() take a bool for read/write

  Linus Torvalds

  2016-08-08 07:38:45 +0800  
• 635a4ba11   Merge tag 'drm-for-v4.8-zpos' of git://people.freedesktop.org/~airlied/linux ... Browse Code »

  Pull drm zpos property support from Dave Airlie:
  "This tree was waiting on some media stuff I hadn't had time to get a
  stable branchpoint off, so I just waited until it was all in your tree
  first.

  It's been around a bit on the list and shouldn't affect anything
  outside adding the generic API and moving some ARM drivers to using
  it"

  * tag 'drm-for-v4.8-zpos' of git://people.freedesktop.org/~airlied/linux:
  drm: rcar: use generic code for managing zpos plane property
  drm/exynos: use generic code for managing zpos plane property
  drm: sti: use generic zpos for plane
  drm: add generic zpos property

  Linus Torvalds

  2016-08-08 07:35:08 +0800  
• 1eff9d322   block: rename bio bi_rw to bi_opf ... Browse Code »

  Since commit 63a4cc24867d, bio->bi_rw contains flags in the lower
  portion and the op code in the higher portions. This means that
  old code that relies on manually setting bi_rw is most likely
  going to be broken. Instead of letting that brokeness linger,
  rename the member, to force old and out-of-tree code to break
  at compile time instead of at runtime.

  No intended functional changes in this commit.

  Signed-off-by: Jens Axboe

  Jens Axboe

  2016-08-08 04:41:02 +0800  

07 Aug, 2016

3 commits

• 52ddb7e9d   Merge tag 'doc-4.8-fixes' of git://git.lwn.net/linux ... Browse Code »

  Pull documentation fixes from Jonathan Corbet:
  "Three fixes for the docs build, including removing an annoying warning
  on 'make help' if sphinx isn't present"

  * tag 'doc-4.8-fixes' of git://git.lwn.net/linux:
  DocBook: use DOCBOOKS="" to ignore DocBooks instead of IGNORE_DOCBOOKS=1
  Documenation: update cgroup's document path
  Documentation/sphinx: do not warn about missing tools in 'make help'

  Linus Torvalds

  2016-08-07 22:23:17 +0800  
• e9d488c31   Merge tag 'binfmt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/binfmt_misc ... Browse Code »

  Pull binfmt_misc update from James Bottomley:
  "This update is to allow architecture emulation containers to function
  such that the emulation binary can be housed outside the container
  itself. The container and fs parts both have acks from relevant
  experts.

  To use the new feature you have to add an F option to your binfmt_misc
  configuration"

  From the docs:
  "The usual behaviour of binfmt_misc is to spawn the binary lazily when
  the misc format file is invoked. However, this doesn't work very well
  in the face of mount namespaces and changeroots, so the F mode opens
  the binary as soon as the emulation is installed and uses the opened
  image to spawn the emulator, meaning it is always available once
  installed, regardless of how the environment changes"

  * tag 'binfmt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/binfmt_misc:
  binfmt_misc: add F option description to documentation
  binfmt_misc: add persistent opened binary handler for containers
  fs: add filp_clone_open API

  Linus Torvalds

  2016-08-07 22:13:14 +0800  
• fe64f3283   Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Browse Code »

  Pull more vfs updates from Al Viro:
  "Assorted cleanups and fixes.

  In the "trivial API change" department - ->d_compare() losing 'parent'
  argument"

  * 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  cachefiles: Fix race between inactivating and culling a cache object
  9p: use clone_fid()
  9p: fix braino introduced in "9p: new helper - v9fs_parent_fid()"
  vfs: make dentry_needs_remove_privs() internal
  vfs: remove file_needs_remove_privs()
  vfs: fix deadlock in file_remove_privs() on overlayfs
  get rid of 'parent' argument of ->d_compare()
  cifs, msdos, vfat, hfs+: don't bother with parent in ->d_compare()
  affs ->d_compare(): don't bother with ->d_inode
  fold _d_rehash() and __d_rehash() together
  fold dentry_rcuwalk_invalidate() into its only remaining caller

  Linus Torvalds

  2016-08-07 22:01:14 +0800  

06 Aug, 2016

6 commits

• 80fac0f57   Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm ... Browse Code »

  Pull more KVM updates from Paolo Bonzini:
  - ARM bugfix and MSI injection support
  - x86 nested virt tweak and OOPS fix
  - Simplify pvclock code (vdso bits acked by Andy Lutomirski).

  * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  nvmx: mark ept single context invalidation as supported
  nvmx: remove comment about missing nested vpid support
  KVM: lapic: fix access preemption timer stuff even if kernel_irqchip=off
  KVM: documentation: fix KVM_CAP_X2APIC_API information
  x86: vdso: use __pvclock_read_cycles
  pvclock: introduce seqcount-like API
  arm64: KVM: Set cpsr before spsr on fault injection
  KVM: arm: vgic-irqfd: Workaround changing kvm_set_routing_entry prototype
  KVM: arm/arm64: Enable MSI routing
  KVM: arm/arm64: Enable irqchip routing
  KVM: Move kvm_setup_default/empty_irq_routing declaration in arch specific header
  KVM: irqchip: Convey devid to kvm_set_msi
  KVM: Add devid in kvm_kernel_irq_routing_entry
  KVM: api: Pass the devid in the msi routing entry

  Linus Torvalds

  2016-08-06 21:18:21 +0800  
• 372ee1638   rxrpc: Fix races between skb free, ACK generation and replying ... Browse Code »

  Inside the kafs filesystem it is possible to occasionally have a call
  processed and terminated before we've had a chance to check whether we need
  to clean up the rx queue for that call because afs_send_simple_reply() ends
  the call when it is done, but this is done in a workqueue item that might
  happen to run to completion before afs_deliver_to_call() completes.

  Further, it is possible for rxrpc_kernel_send_data() to be called to send a
  reply before the last request-phase data skb is released. The rxrpc skb
  destructor is where the ACK processing is done and the call state is
  advanced upon release of the last skb. ACK generation is also deferred to
  a work item because it's possible that the skb destructor is not called in
  a context where kernel_sendmsg() can be invoked.

  To this end, the following changes are made:

  (1) kernel_rxrpc_data_consumed() is added. This should be called whenever
  an skb is emptied so as to crank the ACK and call states. This does
  not release the skb, however. kernel_rxrpc_free_skb() must now be
  called to achieve that. These together replace
  rxrpc_kernel_data_delivered().

  (2) kernel_rxrpc_data_consumed() is wrapped by afs_data_consumed().

  This makes afs_deliver_to_call() easier to work as the skb can simply
  be discarded unconditionally here without trying to work out what the
  return value of the ->deliver() function means.

  The ->deliver() functions can, via afs_data_complete(),
  afs_transfer_reply() and afs_extract_data() mark that an skb has been
  consumed (thereby cranking the state) without the need to
  conditionally free the skb to make sure the state is correct on an
  incoming call for when the call processor tries to send the reply.

  (3) rxrpc_recvmsg() now has to call kernel_rxrpc_data_consumed() when it
  has finished with a packet and MSG_PEEK isn't set.

  (4) rxrpc_packet_destructor() no longer calls rxrpc_hard_ACK_data().

  Because of this, we no longer need to clear the destructor and put the
  call before we free the skb in cases where we don't want the ACK/call
  state to be cranked.

  (5) The ->deliver() call-type callbacks are made to return -EAGAIN rather
  than 0 if they expect more data (afs_extract_data() returns -EAGAIN to
  the delivery function already), and the caller is now responsible for
  producing an abort if that was the last packet.

  (6) There are many bits of unmarshalling code where:

  ret = afs_extract_data(call, skb, last, ...);
  switch (ret) {
  case 0: break;
  case -EAGAIN: return 0;
  default: return ret;
  }

  is to be found. As -EAGAIN can now be passed back to the caller, we
  now just return if ret < 0:

  ret = afs_extract_data(call, skb, last, ...);
  if (ret < 0)
  return ret;

  (7) Checks for trailing data and empty final data packets has been
  consolidated as afs_data_complete(). So:

  if (skb->len > 0)
  return -EBADMSG;
  if (!last)
  return 0;

  becomes:

  ret = afs_data_complete(call, skb, last);
  if (ret < 0)
  return ret;

  (8) afs_transfer_reply() now checks the amount of data it has against the
  amount of data desired and the amount of data in the skb and returns
  an error to induce an abort if we don't get exactly what we want.

  Without these changes, the following oops can occasionally be observed,
  particularly if some printks are inserted into the delivery path:

  general protection fault: 0000 [#1] SMP
  Modules linked in: kafs(E) af_rxrpc(E) [last unloaded: af_rxrpc]
  CPU: 0 PID: 1305 Comm: kworker/u8:3 Tainted: G E 4.7.0-fsdevel+ #1303
  Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014
  Workqueue: kafsd afs_async_workfn [kafs]
  task: ffff88040be041c0 ti: ffff88040c070000 task.ti: ffff88040c070000
  RIP: 0010:[] [] __lock_acquire+0xcf/0x15a1
  RSP: 0018:ffff88040c073bc0 EFLAGS: 00010002
  RAX: 6b6b6b6b6b6b6b6b RBX: 0000000000000000 RCX: ffff88040d29a710
  RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88040d29a710
  RBP: ffff88040c073c70 R08: 0000000000000001 R09: 0000000000000001
  R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
  R13: 0000000000000000 R14: ffff88040be041c0 R15: ffffffff814c928f
  FS: 0000000000000000(0000) GS:ffff88041fa00000(0000) knlGS:0000000000000000
  CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00007fa4595f4750 CR3: 0000000001c14000 CR4: 00000000001406f0
  Stack:
  0000000000000006 000000000be04930 0000000000000000 ffff880400000000
  ffff880400000000 ffffffff8108f847 ffff88040be041c0 ffffffff81050446
  ffff8803fc08a920 ffff8803fc08a958 ffff88040be041c0 ffff88040c073c38
  Call Trace:
  [] ? mark_held_locks+0x5e/0x74
  [] ? __local_bh_enable_ip+0x9b/0xa1
  [] ? trace_hardirqs_on_caller+0x16d/0x189
  [] lock_acquire+0x122/0x1b6
  [] ? lock_acquire+0x122/0x1b6
  [] ? skb_dequeue+0x18/0x61
  [] _raw_spin_lock_irqsave+0x35/0x49
  [] ? skb_dequeue+0x18/0x61
  [] skb_dequeue+0x18/0x61
  [] afs_deliver_to_call+0x344/0x39d [kafs]
  [] afs_process_async_call+0x4c/0xd5 [kafs]
  [] afs_async_workfn+0xe/0x10 [kafs]
  [] process_one_work+0x29d/0x57c
  [] worker_thread+0x24a/0x385
  [] ? rescuer_thread+0x2d0/0x2d0
  [] kthread+0xf3/0xfb
  [] ret_from_fork+0x1f/0x40
  [] ? kthread_create_on_node+0x1cf/0x1cf

  Signed-off-by: David Howells
  Signed-off-by: David S. Miller

  David Howells

  2016-08-06 12:08:40 +0800  
• a157b3aaa   Merge tag 'pwm/for-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thi… ... Browse Code »

  …erry.reding/linux-pwm

  Pull pwm updates from Thierry Reding:
  "This set of changes improve some aspects of the atomic API as well as
  make use of this new API in the regulator framework to allow properly
  dealing with critical regulators controlled by a PWM.

  Aside from that there's a bunch of updates and cleanups for existing
  drivers, as well as the addition of new drivers for the Broadcom
  iProc, STMPE and ChromeOS EC controllers"

  * tag 'pwm/for-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (44 commits)
  regulator: pwm: Document pwm-dutycycle-unit and pwm-dutycycle-range
  regulator: pwm: Support extra continuous mode cases
  pwm: Add ChromeOS EC PWM driver
  dt-bindings: pwm: Add binding for ChromeOS EC PWM
  mfd: cros_ec: Add EC_PWM function definitions
  mfd: cros_ec: Add cros_ec_cmd_xfer_status() helper
  pwm: atmel: Use of_device_get_match_data()
  pwm: atmel: Fix checkpatch warnings
  pwm: atmel: Fix disabling of PWM channels
  dt-bindings: pwm: Add R-Car H3 device tree bindings
  pwm: rcar: Use ARCH_RENESAS
  pwm: tegra: Add support for Tegra186
  dt-bindings: pwm: tegra: Add compatible string for Tegra186
  pwm: tegra: Avoid overflow when calculating duty cycle
  pwm: tegra: Allow 100 % duty cycle
  pwm: tegra: Add support for reset control
  pwm: tegra: Rename mmio_base to regs
  pwm: tegra: Remove useless padding
  pwm: tegra: Drop NUM_PWM macro
  pwm: lpc32xx: Set PWM_PIN_LEVEL bit to default value
  ...

  Linus Torvalds

  2016-08-06 12:01:33 +0800  
• a02040d8d   Merge tag 'pstore-v4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux ... Browse Code »

  Pull pstore fixes from Kees Cook:
  "Fixes for pstore ramoops driver to catch bad kfree() and to use better
  DT bindings"

  * tag 'pstore-v4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  ramoops: use persistent_ram_free() instead of kfree() for freeing prz
  ramoops: use DT reserved-memory bindings

  Linus Torvalds

  2016-08-06 11:52:52 +0800  
• 39fada552   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input ... Browse Code »

  Pull more input updates from Dmitry Torokhov:
  "Two new drivers for touchscreen controllers:

  - Silead touchscreen controllers
  - SiS 9200 family touchscreen controllers

  and a few driver fixes"

  * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: silead - remove some dead code
  Input: sis-i2c - select CONFIG_CRC_ITU_T
  Input: add driver for SiS 9200 family I2C touchscreen controllers
  Input: ili210x - fix permissions on "calibrate" attribute
  Input: elan_i2c - properly wake up touchpad on ASUS laptops
  Input: add driver for Silead touchscreens
  Input: elantech - fix debug dump of the current packet
  Input: rotary_encoder - support binary encoding of states
  Input: xpad - power off wireless 360 controllers on suspend
  Input: i8042 - break load dependency between atkbd/psmouse and i8042
  Input: synaptics-rmi4 - do not check for NULL when calling of_node_put()
  Input: cros_ec_keyb - cleanup use of dev

  Linus Torvalds

  2016-08-06 11:24:15 +0800  
• 529182e20   ramoops: use DT reserved-memory bindings ... Browse Code »

  Instead of a ramoops-specific node, use a child node of /reserved-memory.
  This requires that of_platform_device_create() be explicitly called
  for the node, though, since "/reserved-memory" does not have its own
  "compatible" property.

  Suggested-by: Rob Herring
  Signed-off-by: Kees Cook
  Acked-by: Rob Herring

  Kees Cook

  2016-08-06 02:21:36 +0800  

05 Aug, 2016

2 commits

• a71e36045   Merge tag 'nfsd-4.8' of git://linux-nfs.org/~bfields/linux ... Browse Code »

  Pull nfsd updates from Bruce Fields:
  "Highlights:

  - Trond made a change to the server's tcp logic that allows a fast
  client to better take advantage of high bandwidth networks, but may
  increase the risk that a single client could starve other clients;
  a new sunrpc.svc_rpc_per_connection_limit parameter should help
  mitigate this in the (hopefully unlikely) event this becomes a
  problem in practice.

  - Tom Haynes added a minimal flex-layout pnfs server, which is of no
  use in production for now--don't build it unless you're doing
  client testing or further server development"

  * tag 'nfsd-4.8' of git://linux-nfs.org/~bfields/linux: (32 commits)
  nfsd: remove some dead code in nfsd_create_locked()
  nfsd: drop unnecessary MAY_EXEC check from create
  nfsd: clean up bad-type check in nfsd_create_locked
  nfsd: remove unnecessary positive-dentry check
  nfsd: reorganize nfsd_create
  nfsd: check d_can_lookup in fh_verify of directories
  nfsd: remove redundant zero-length check from create
  nfsd: Make creates return EEXIST instead of EACCES
  SUNRPC: Detect immediate closure of accepted sockets
  SUNRPC: accept() may return sockets that are still in SYN_RECV
  nfsd: allow nfsd to advertise multiple layout types
  nfsd: Close race between nfsd4_release_lockowner and nfsd4_lock
  nfsd/blocklayout: Make sure calculate signature/designator length aligned
  xfs: abstract block export operations from nfsd layouts
  SUNRPC: Remove unused callback xpo_adjust_wspace()
  SUNRPC: Change TCP socket space reservation
  SUNRPC: Add a server side per-connection limit
  SUNRPC: Micro optimisation for svc_data_ready
  SUNRPC: Call the default socket callbacks instead of open coding
  SUNRPC: lock the socket while detaching it
  ...

  Linus Torvalds

  2016-08-05 07:59:06 +0800  
• bdf107d87   DocBook: use DOCBOOKS="" to ignore DocBooks instead of IGNORE_DOCBOOKS=1 ... Browse Code »

  Instead of a separate ignore flag, use the obvious DOCBOOKS="" to ignore
  all DocBook files. This is also in line with the Sphinx build being
  ignored if a non-empty DOCBOOKS make variable is specified on the make
  command line.

  This replaces the IGNORE_DOCBOOKS introduced in

  commit 547218864afb2745d9d137f005f3380ef96b26ab
  Author: Mauro Carvalho Chehab
  Date: Sat Jul 9 13:12:45 2016 -0300

  doc-rst: add an option to ignore DocBooks when generating docs

  and aligns with

  commit 6387872c86ea6698ed8faa3ccad1d1bd60f762f7
  Author: Jani Nikula
  Date: Fri Jul 1 15:24:44 2016 +0300

  Documentation/sphinx: skip build if user requested specific DOCBOOKS

  Cc: Daniel Vetter
  Signed-off-by: Jani Nikula
  Tested-by: Mauro Carvalho Chehab
  Signed-off-by: Jonathan Corbet

  Jani Nikula

  2016-08-05 06:51:33 +0800  

04 Aug, 2016

3 commits

• c1ece7671   Merge tag 'media/v4.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media ... Browse Code »

  Pull media DocBook removal and some fixups from Mauro Carvalho Chehab:

  - removal of the media DocBook (since it's all in Sphinx now)

  - videobuf2: Fix an allocation regression

  - a few fixes related to the CEC drivers

  * tag 'media/v4.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] cec: fix off-by-one memset
  [media] staging: add MEDIA_SUPPORT dependency
  [media] vivid: don't handle CEC_MSG_SET_STREAM_PATH
  [media] media: adv7180: Fix broken interrupt register access
  [media] vb2: Fix allocation size of dma_parms
  [media] vim2m: copy the other colorspace-related fields as well
  [media] adv7511: fix VIC autodetect
  doc-rst: Remove the media docbook

  Linus Torvalds

  2016-08-04 21:59:37 +0800  
• fb1b83d3f   Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux ... Browse Code »

  Pull module updates from Rusty Russell:
  "The only interesting thing here is Jessica's patch to add
  ro_after_init support to modules. The rest are all trivia"

  * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  extable.h: add stddef.h so "NULL" definition is not implicit
  modules: add ro_after_init support
  jump_label: disable preemption around __module_text_address().
  exceptions: fork exception table content from module.h into extable.h
  modules: Add kernel parameter to blacklist modules
  module: Do a WARN_ON_ONCE() for assert module mutex not held
  Documentation/module-signing.txt: Note need for version info if reusing a key
  module: Invalidate signatures on force-loaded modules
  module: Issue warnings when tainting kernel
  module: fix redundant test.
  module: fix noreturn attribute for __module_put_and_exit()

  Linus Torvalds

  2016-08-04 21:14:38 +0800  
• 00085f1ef   dma-mapping: use unsigned long for dma_attrs ... Browse Code »

  The dma-mapping core and the implementations do not change the DMA
  attributes passed by pointer. Thus the pointer can point to const data.
  However the attributes do not have to be a bitfield. Instead unsigned
  long will do fine:

  1. This is just simpler. Both in terms of reading the code and setting
  attributes. Instead of initializing local attributes on the stack
  and passing pointer to it to dma_set_attr(), just set the bits.

  2. It brings safeness and checking for const correctness because the
  attributes are passed by value.

  Semantic patches for this change (at least most of them):

  virtual patch
  virtual context

  @r@
  identifier f, attrs;

  @@
  f(...,
  - struct dma_attrs *attrs
  + unsigned long attrs
  , ...)
  {
  ...
  }

  @@
  identifier r.f;
  @@
  f(...,
  - NULL
  + 0
  )

  and

  // Options: --all-includes
  virtual patch
  virtual context

  @r@
  identifier f, attrs;
  type t;

  @@
  t f(..., struct dma_attrs *attrs);

  @@
  identifier r.f;
  @@
  f(...,
  - NULL
  + 0
  )

  Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com
  Signed-off-by: Krzysztof Kozlowski
  Acked-by: Vineet Gupta
  Acked-by: Robin Murphy
  Acked-by: Hans-Christian Noren Egtvedt
  Acked-by: Mark Salter [c6x]
  Acked-by: Jesper Nilsson [cris]
  Acked-by: Daniel Vetter [drm]
  Reviewed-by: Bart Van Assche
  Acked-by: Joerg Roedel [iommu]
  Acked-by: Fabien Dessenne [bdisp]
  Reviewed-by: Marek Szyprowski [vb2-core]
  Acked-by: David Vrabel [xen]
  Acked-by: Konrad Rzeszutek Wilk [xen swiotlb]
  Acked-by: Joerg Roedel [iommu]
  Acked-by: Richard Kuo [hexagon]
  Acked-by: Geert Uytterhoeven [m68k]
  Acked-by: Gerald Schaefer [s390]
  Acked-by: Bjorn Andersson
  Acked-by: Hans-Christian Noren Egtvedt [avr32]
  Acked-by: Vineet Gupta [arc]
  Acked-by: Robin Murphy [arm64 and dma-iommu]
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Krzysztof Kozlowski

  2016-08-04 20:50:07 +0800