Commit graph

79,486 commits

Author SHA1 Message Date
Nariman Poushin
8019ff6cfc regmap: Use reg_sequence for multi_reg_write / register_patch
Separate the functionality using sequences of register writes from the
functions that take register defaults. This change renames the arguments
in order to support the extension of reg_sequence to take an optional
delay to be applied after any given register in a sequence is written.
This avoids adding an int to all register defaults, which could
substantially increase memory usage for regmaps with large default tables.

This also updates all the clients of multi_reg_write/register_patch.

Signed-off-by: Nariman Poushin <nariman@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 22:02:55 +01:00
Kuninori Morimoto
5e3cdaa208 ASoC: core: add snd_soc_of_parse_audio_prefix()
Current ASoC can add name_prefix for DAPM, and it is necessary for
route settings. This patch adds snd_soc_of_parse_audio_prefix() for
this purpose. It will be used with snd_soc_of_parse_audio_routing().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 21:59:41 +01:00
Krzysztof Kozlowski
309a3e00a5 mfd/extcon: max77843: Rename defines to allow inclusion with max77693
Add MAX77843_MUIC prefix to some of the defines used in max77843 extcon
driver so the max77693-private.h can be included simultaneously with
max77843-private.h.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 21:39:30 +01:00
Krzysztof Kozlowski
cceb433a1e mfd/extcon: max77693: Rename defines to allow inclusion with max77843
Add MAX77693 prefix to some of the defines used in max77693 extcon
driver so the max77693-private.h can be included simultaneously with
max77843-private.h.

Additionally use BIT() macro in header.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 21:39:30 +01:00
Krzysztof Kozlowski
bc1aadc186 drivers: max77843: Switch to common max77693 state container
Switch to the same definition of state container as in MAX77693 drivers.
This will allow usage of one regulator driver in both devices: MAX77693
and MAX77843.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 21:39:30 +01:00
Krzysztof Kozlowski
61b305cd2a drivers: max77693: Move state container to common header
This prepares for merging some of the drivers between max77693 and
max77843 so the child MFD driver can be attached to any parent MFD main
driver.

Move the state container to common header file. Additionally add
consistent 'i2c' prefixes to its members (of 'struct i2c_client' type).

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Acked-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 21:39:30 +01:00
Krzysztof Kozlowski
b3b58cee8a mfd: max77693: Store I2C device type as enum and add default unknown
Store the device type (obtained from i2c_device_id) as an enum and add a
default type of unknown to distinguish from case when this is not set
at all.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 21:39:29 +01:00
Krzysztof Kozlowski
0afab670bd mfd/extcon: max77693: Remove unused extern declarations and max77693_dev members
Clean up the max77693 private header file by removing:
1. Left-overs from previous way of interrupt handling (driver uses
   regmap_irq_chip).
2. Unused members of struct 'max77693_dev' related to interrupts in
   extcon driver.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 21:39:29 +01:00
Stephen Chandler Paul
e1443d2849 Input: i8042 - add unmask_kbd_data option
A big problem with the current i8042 debugging option is that it outputs
data going to and from the keyboard by default. As a result, many dmesg
logs uploaded by users will unintentionally contain sensitive information
such as their password, as such it's probably a good idea not to output
data coming from the keyboard unless specifically enabled by the user.

Signed-off-by: Stephen Chandler Paul <cpaul@redhat.com>
Reviewed-by: Andreas Mohr <andim2@users.sf.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-07-16 10:30:55 -07:00
Tony Lindgren
9cf705de06 ARM: OMAP2+: Add support for initializing dm814x clocks
Let's add a minimal clocks for dm814x to get it booted. This is
mostly a placeholder and relies on the PLLs being on from the
bootloader.

Note that the divider clocks work the same way as on dm816x and
am335x.

Cc: Matthijs van Duin <matthijsvanduin@gmail.com>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Tero Kristo <t-kristo@ti.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-07-16 02:09:33 -07:00
Thierry Reding
03b3f4c8b7 soc/tegra: fuse: Rename core_* to soc_*
There's a mixture of core_* and soc_* prefixes for variables storing
information related to the VDD_CORE rail. Choose one (soc_*) and use it
more consistently.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-07-16 10:38:29 +02:00
Thierry Reding
0dc5a0d836 soc/tegra: fuse: Add Tegra210 support
Add Tegra210 support to the fuses driver and add Tegra210-specific
speedo definitions.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-07-16 10:38:29 +02:00
Thierry Reding
c2fe4694d8 soc/tegra: pmc: Add Tegra210 support
Tegra210 uses a power management controller that is compatible with
earlier SoC generations but adds a couple of power partitions for new
hardware blocks.

Reviewed-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-07-16 10:38:27 +02:00
Geert Uytterhoeven
527b397a7a gpio: em: Remove obsolete platform data support
Since commit 59032702ea ("ARM: shmobile: Remove legacy platform
devices from EMEV2 SoC code"), EMMA Mobile SoCs are only supported in
generic DT-only ARM multi-platform builds.  The driver doesn't need to
use platform data anymore, hence remove platform data configuration.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Tested-by: Niklas Söderlund <niso@kth.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-07-16 10:31:11 +02:00
Paul Walmsley
a3c83ff20c clk: tegra: Add DFLL DVCO reset control for Tegra124
The DVCO present in the DFLL IP block has a separate reset line,
exposed via the CAR IP block.  This reset line is asserted upon SoC
reset.  Unless something (such as the DFLL driver) deasserts this
line, the DVCO will not oscillate, although reads and writes to the
DFLL IP block will complete.

Thanks to Aleksandr Frid <afrid@nvidia.com> for identifying this and
saving hours of debugging time.

Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
[ttynkkynen: ported to tegra124 from tegra114]
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
[mikko.perttunen: ported to special reset callback]
Signed-off-by: Mikko Perttunen <mikko.perttunen@kapsi.fi>
Acked-by: Michael Turquette <mturquette@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-07-16 09:32:48 +02:00
Anuradha Karuppiah
88d6378bd6 netlink: changes for setting and clearing protodown via netlink.
Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-15 21:39:40 -07:00
Anuradha Karuppiah
d746d707a8 net core: Add protodown support.
This patch introduces the proto_down flag that can be used by user space
applications to notify switch drivers that errors have been detected on the
device.

The switch driver can react to protodown notification by doing a phys down
on the associated switch port.

Signed-off-by: Anuradha Karuppiah <anuradhak@cumulusnetworks.com>
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-15 21:39:40 -07:00
Eric Dumazet
03645a11a5 ipv6: lock socket in ip6_datagram_connect()
ip6_datagram_connect() is doing a lot of socket changes without
socket being locked.

This looks wrong, at least for udp_lib_rehash() which could corrupt
lists because of concurrent udp_sk(sk)->udp_portaddr_hash accesses.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-15 17:25:51 -07:00
Linus Torvalds
9090fdb9c9 Changes for 4.2-rc
- Mainly fix-ups for the various 4.2 items
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVpWPTAAoJELgmozMOVy/dRjkQALGpY+m0Q+dfS4geU+JvvH0/
 tTNJevWA1lu5xIgzk8aW+RgNOt+IQV2K6XnKOdKWcdE2wg9Yg9/8Y7atxeNSLoB6
 mdUfstmTHoDFRXea1wog45QVVv9ABqSXIOmFd/PQSf2pEHvwgmVaxO2KW5n0n71H
 0G9nw28jx+Igd1IjX3UezbB4Rm5jeG6exQEM5KKQ/l/cD2Pt/DIr9OmTmkMhj4Ft
 4ppC+JsDHZMT2mQljEB1UL6Va1BGgULn4JwZviXRGgTEFiS+rtUkWXy9CVeNIV+A
 bo6aHEBlO8zbj9xg0POkHGBP2XCkDpsc5EP6/zon30MLpOTpnnTp2zq/bhGpyr5w
 ytH1x6V8Od1Or9BrHygy1yLGaqaVthIuZMReLq0Bu26px8mTECdu8bUjwxEvbvep
 u51vQ75h99td5XtXBHULcd/I8mUb3JqbEHqig0ChLOcnOMh72KLql8qfhLvzrYSv
 gFMvnqUZWq4WYET8cKcWypj5+cIME4objOim6T/TG+zTCmgbPnhwBsgvujLhfhDy
 JhUjUfS+31S99I4smL7ceKQpfA/7awLuZf/C20zdLZO2wXnx7VmbNlhQA3mvssyt
 ZOXeLkLGcXDIT3egNj5VWQR/KlVtvUS9FNVslxqo4ItyZZwJtbHTwRAgATp3XRwD
 Po7E7bWoUQqpanhgiX4Q
 =N/5G
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma fixes from Doug Ledford:
 "Mainly fix-ups for the various 4.2 items"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (24 commits)
  IB/core: Destroy ocrdma_dev_id IDR on module exit
  IB/core: Destroy multcast_idr on module exit
  IB/mlx4: Optimize do_slave_init
  IB/mlx4: Fix memory leak in do_slave_init
  IB/mlx4: Optimize freeing of items on error unwind
  IB/mlx4: Fix use of flow-counters for process_mad
  IB/ipath: Convert use of __constant_<foo> to <foo>
  IB/ipoib: Set MTU to max allowed by mode when mode changes
  IB/ipoib: Scatter-Gather support in connected mode
  IB/ucm: Fix bitmap wrap when devnum > IB_UCM_MAX_DEVICES
  IB/ipoib: Prevent lockdep warning in __ipoib_ib_dev_flush
  IB/ucma: Fix lockdep warning in ucma_lock_files
  rds: rds_ib_device.refcount overflow
  RDMA/nes: Fix for incorrect recording of the MAC address
  RDMA/nes: Fix for resolving the neigh
  RDMA/core: Fixes for port mapper client registration
  IB/IPoIB: Fix bad error flow in ipoib_add_port()
  IB/mlx4: Do not attemp to report HCA clock offset on VFs
  IB/cm: Do not queue work to a device that's going away
  IB/srp: Avoid using uninitialized variable
  ...
2015-07-15 17:03:03 -07:00
Geert Uytterhoeven
30bb6fb39e gpio: Remove double "base" in comment
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-07-16 00:12:24 +02:00
Denys Vlasenko
d5671f6bf2 rcu: Deinline rcu_read_lock_sched_held() if DEBUG_LOCK_ALLOC
DEBUG_LOCK_ALLOC=y is not a production setting, but it is
not very unusual either. Many developers routinely
use kernels built with it enabled.

Apart from being selected by hand, it is also auto-selected by
PROVE_LOCKING "Lock debugging: prove locking correctness" and
LOCK_STAT "Lock usage statistics" config options.
LOCK STAT is necessary for "perf lock" to work.

I wouldn't spend too much time optimizing it, but this particular
function has a very large cost in code size: when it is deinlined,
code size decreases by 830,000 bytes:

    text     data      bss       dec     hex filename
85674192 22294776 20627456 128596424 7aa39c8 vmlinux.before
84837612 22294424 20627456 127759492 79d7484 vmlinux

(with this config: http://busybox.net/~vda/kernel_config)

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
CC: Josh Triplett <josh@joshtriplett.org>
CC: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
CC: Lai Jiangshan <laijs@cn.fujitsu.com>
CC: Tejun Heo <tj@kernel.org>
CC: Oleg Nesterov <oleg@redhat.com>
CC: linux-kernel@vger.kernel.org
Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2015-07-15 14:43:52 -07:00
Linus Torvalds
16ff49a08b File locking related changes for v4.2 (pile #1)
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVo5PmAAoJEAAOaEEZVoIVQkAP/iU8i/atra0YVACMckwLH0rV
 OlMs66V1Ur/+3PNwnBAPAITIQTIokRcCUe+ChwlM5I0/N6sHb8b+qKqsc1cesSn4
 rBIBXigjMTeBS4MZXYhCeo9oMPPRtTpKdZMGlh499wQcc39BkmRtYPeONQCaYovW
 uDq4Mydbt3m92wJK3s2VNsAeNgGKsS7VNZkjQKFxsKSreFKz7NhDBab18lvqAC/9
 1z4bqdM4I82uaDdecHiZu8EgTKzDN8wqxYwXJ6RmAtHDXn9r2aXOIwH9+nMGxXQF
 DDBgiFb49moK1owJ9UUO3n6GR5HPmmlhshS426uJiODTbI5KlX+68kYQsTpcuRch
 CjNBPtUxeDvqK+FRb1jCftA43tcRtqhLYrQ3lr+V4/UqWNZzH0xkrCozg1aP7yg2
 XBhw+OWqLm7GyH51IdpRDKQi1hgX9QVp9s6XLhXf7R/o2Lsbyfehe31pJcgcjMbc
 2QJiurbSK9+a89bwAn2xozMDOcIXyYAQyS2IBUMuNtCVo6vtsqmtYU+UEKJzoKph
 BlwlMqIQyuT0P+jPjy4lxHmskz6I8ToykRS39RVtflS8JPrSAcJ3VVJHnabQcwA7
 L1qrDbvaQ+nhLLoX7+zi0yqbLbdD5L+6WXJDaFQsK4XtF0c+hxxvoKCPg3vWOqt3
 vAHDSy5Q8s94lsOvzcXC
 =aj6S
 -----END PGP SIGNATURE-----

Merge tag 'locks-v4.2-1' of git://git.samba.org/jlayton/linux

Pull file locking updates from Jeff Layton:
 "I had thought that I was going to get away without a pull request this
  cycle.  There was a NFSv4 file locking problem that cropped up that I
  tried to fix in the NFSv4 code alone, but that fix has turned out to
  be problematic.  These patches fix this in the correct way.

  Note that this touches some NFSv4 code as well.  Ordinarily I'd wait
  for Trond to ACK this, but he's on holiday right now and the bug is
  rather nasty.  So I suggest we merge this and if he raises issues with
  it we can sort it out when he gets back"

Acked-by: Bruce Fields <bfields@fieldses.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
 [ +1 to this series fixing a 100% reproducible slab corruption +
   general protection fault in my nfs-root test environment. - Dan ]
Acked-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

* tag 'locks-v4.2-1' of git://git.samba.org/jlayton/linux:
  locks: inline posix_lock_file_wait and flock_lock_file_wait
  nfs4: have do_vfs_lock take an inode pointer
  locks: new helpers - flock_lock_inode_wait and posix_lock_inode_wait
  locks: have flock_lock_file take an inode pointer instead of a filp
  Revert "nfs: take extra reference to fl->fl_file when running a LOCKU operation"
2015-07-15 13:35:23 -07:00
Linus Torvalds
df14a68d63 * Fix FPU refactoring ("kvm: x86: fix load xsave feature warning")
* Fix eager FPU mode (Cc stable).
 * AMD bits of MTRR virtualization.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQEcBAABCAAGBQJVpOA0AAoJEL/70l94x66D59QH/R68oIbcC9eOrs3LgxFwFS/g
 uPY2owxr1MFAwI39S3zpSXXuLdB63E9G6EzP9lQO6UnSXgcNitnpEINEXpCpH7hS
 5DSw/0gPPjXlwyio7wM0EiXC+YO4kgzhLaBmeK5qPQmfvCz5bvLgelrY39T4TH/u
 B7gZN/uuaMfU8xNchCiU9Bx+KzaQhgpUTSOH/j8n2Obe9J/AyUqsSFeXzsN9hlVp
 5YcBOyzthDjphbeyfxas1nTNinO+tfvO5fDNKbqvRgOnm+/wubhXAikDs4u60eXp
 j6TUVKYJRJe9yh5jFB/HOA/0h6DDyoK+t7LSYRPRjONVFoxrnogvA+OQCIX/57Y=
 =vDV4
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:

 - Fix FPU refactoring ("kvm: x86: fix load xsave feature warning")

 - Fix eager FPU mode (Cc stable)

 - AMD bits of MTRR virtualization

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  kvm: x86: fix load xsave feature warning
  KVM: x86: apply guest MTRR virtualization on host reserved pages
  KVM: SVM: Sync g_pat with guest-written PAT value
  KVM: SVM: use NPT page attributes
  KVM: count number of assigned devices
  KVM: VMX: fix vmwrite to invalid VMCS
  KVM: x86: reintroduce kvm_is_mmio_pfn
  x86: hyperv: add CPUID bit for crash handlers
2015-07-15 13:30:12 -07:00
Greg Kroah-Hartman
e913bfb60b First round of new drivers, cleanups and functionality for IIO in the 4.3 cycle.
Core and tools new stuff
 * Allow explicit flush of hardware fifo by using an non blocking read.
   This is needed to support some of the Android requirements for HW fifo
   devices - also makes sense generally and clarifies a corner of the ABI.
 * Add some missing modifier names.  Mostly these exist for weird and
   wonderful event types, but should still be present in the name array.
 * Update iio_event_monitor to cope with new channel types.
 * generic_buffer gains support for single byte scan elements (no idea
   how this never got implemented before!)
 
 New device support
 * ROHM rpr0521 light and proximity sensor driver.
 * bmc150 gains bmc156 support.
 * ms5611 gains ms5607 temperature and pressure sensor support.
 
 Driver functionality
 * inv-mpu - add scale_available attributes to aid userspace in
   configuring these devices.
 * isl29125 - add scale_available attributes.
 * stk8ba50 - sampling frequency control, triggered buffer support.
 * stk8312 - sampling frequency control, triggered buffer support.
 * cc10001 - ensure ADC powered up at probe time if shared by non linux
   running CPUs.
 * bmc150-magn - decouple the buffer and trigger allowing other triggers
   to be used to drive this device's sampling.
 Documentation
 * Add some previously missed *scale_available attributes to the ABI docs.
 
 Cleanups
 * Clarify some crazy naming in iio_triggered_buffer_setup that seems to
   have somehow ended up backwards (dates back a long way).  Avoid the top
   half and bottom half naming entirely given we are how dealing with a
   handler and a thread in all cases.
 * Tools cleanup including coding style, variable naming improvements, also
   a new sanity check on a full event having been read.
 * stk8ba50 - replace the scale table with a struct for clarity. Also suspend
   the sensor if an error occurs in init.
 * hid-sensor-prox - drop uneeded line break.
 * mma9551 - use size in words for word read / write avoiding accidental
   sending of an odd number of bytes.
 * mma9553 - fix code alignment and document the use of a mutex.
 * light/Kconfig - typo fix in commment.
 * cm3323 - don't eat an error value, replace an unneeded local variable with
   a generic local variable with the same use, add some blank lines for clarity.
 * pressure/Kconfig - typo in Measurement Specialties name.
 * bmc150-accel - actually use a mask definition rather than repeating the
   value inline, code style cleanup.
 * adc/Kconfig - general help description cleanup.
 * ssp_sensors - drop redundant spi driver bus initialization (done in the
   spi core)
 * tmp006 - use genmask rather than hand generated masks.
 * ms5611 - drop IIO_CHAN_INFO_SCALE as this driver provides a processed
   output and as such the read only scale adds nothing useful.
 * kxcjk-1013, adf4350, dummy - drop unwanted blank lines.
 * Drop all owner assignments from i2c_drivers and this is done in the
   i2c core.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJVpqGLAAoJEFSFNJnE9BaIeXEP/09wE8m98+cTUn4/cppM1vTL
 Ypx5ariBNrsbJ3aodD6uOhIY/E8tnOGa5MZmMt7F6XTOTDJIoWt3sJHTYGgC2niS
 1rvXpIKcFx473LabhI7Cq6r3Azon7wC3RrEkZZFgpgMAbZLGLLwamWawZKZkgsQx
 tlWrT3M8BwQoV72mkfUBVrZpRgHwpB5QDZZ7RLVe04QoO1QBZg4HlGO67BdGx3md
 farmaCVOyB1PehzRk1C4wBgfLa2x/fnnrTlXlwNqKfh5OXhbwzluEbzejS9fk5KZ
 ox+H1Ns3+prVheaElI9N5svx1vIrviwwyh1a7aE5r32djidVd502qPOlcB1ebr2e
 xZ0xxzXYzd+XD3g3mGF0B2mIEUL8kj1wX3w/Q2DNoLUaCfPRQbRr8rRf3C7QFcZl
 F0nZyaL2yZzYrs4nqZ6o3G2huWQNBybaQ7riyswq8dPyJ0vpKyQE7Ihj9FHt2u13
 44zpbQ59ct7BZlnsljtSMMQRzJMA2JHnXciB8FYliRoc0QBn4vTP9c+PDCFY2+YW
 TJ6TB/bVI1h/6Qn8rp6i9Ks+QhPr98ftlfSRPTJ9pMINvyZh1oW0yunGfVr88jdj
 aEuQ2sQg/QYs0qB2eon7GmgZ1fhM1snoz3X6XPIuo3pC4eJ29K59gxDHAvUpqdhM
 ANGW8MwFk1lMipobvXIM
 =0E79
 -----END PGP SIGNATURE-----

Merge tag 'iio-for-4.3a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new drivers, cleanups and functionality for IIO in the 4.3 cycle.

Core and tools new stuff
* Allow explicit flush of hardware fifo by using an non blocking read.
  This is needed to support some of the Android requirements for HW fifo
  devices - also makes sense generally and clarifies a corner of the ABI.
* Add some missing modifier names.  Mostly these exist for weird and
  wonderful event types, but should still be present in the name array.
* Update iio_event_monitor to cope with new channel types.
* generic_buffer gains support for single byte scan elements (no idea
  how this never got implemented before!)

New device support
* ROHM rpr0521 light and proximity sensor driver.
* bmc150 gains bmc156 support.
* ms5611 gains ms5607 temperature and pressure sensor support.

Driver functionality
* inv-mpu - add scale_available attributes to aid userspace in
  configuring these devices.
* isl29125 - add scale_available attributes.
* stk8ba50 - sampling frequency control, triggered buffer support.
* stk8312 - sampling frequency control, triggered buffer support.
* cc10001 - ensure ADC powered up at probe time if shared by non linux
  running CPUs.
* bmc150-magn - decouple the buffer and trigger allowing other triggers
  to be used to drive this device's sampling.
Documentation
* Add some previously missed *scale_available attributes to the ABI docs.

Cleanups
* Clarify some crazy naming in iio_triggered_buffer_setup that seems to
  have somehow ended up backwards (dates back a long way).  Avoid the top
  half and bottom half naming entirely given we are how dealing with a
  handler and a thread in all cases.
* Tools cleanup including coding style, variable naming improvements, also
  a new sanity check on a full event having been read.
* stk8ba50 - replace the scale table with a struct for clarity. Also suspend
  the sensor if an error occurs in init.
* hid-sensor-prox - drop uneeded line break.
* mma9551 - use size in words for word read / write avoiding accidental
  sending of an odd number of bytes.
* mma9553 - fix code alignment and document the use of a mutex.
* light/Kconfig - typo fix in commment.
* cm3323 - don't eat an error value, replace an unneeded local variable with
  a generic local variable with the same use, add some blank lines for clarity.
* pressure/Kconfig - typo in Measurement Specialties name.
* bmc150-accel - actually use a mask definition rather than repeating the
  value inline, code style cleanup.
* adc/Kconfig - general help description cleanup.
* ssp_sensors - drop redundant spi driver bus initialization (done in the
  spi core)
* tmp006 - use genmask rather than hand generated masks.
* ms5611 - drop IIO_CHAN_INFO_SCALE as this driver provides a processed
  output and as such the read only scale adds nothing useful.
* kxcjk-1013, adf4350, dummy - drop unwanted blank lines.
* Drop all owner assignments from i2c_drivers and this is done in the
  i2c core.
2015-07-15 12:32:09 -07:00
Kees Cook
221272f97c seccomp: swap hard-coded zeros to defined name
For clarity, if CONFIG_SECCOMP isn't defined, seccomp_mode() is returning
"disabled". This makes that more clear, along with another 0-use, and
results in no operational change.

Signed-off-by: Kees Cook <keescook@chromium.org>
2015-07-15 11:52:54 -07:00
Tycho Andersen
13c4a90119 seccomp: add ptrace options for suspend/resume
This patch is the first step in enabling checkpoint/restore of processes
with seccomp enabled.

One of the things CRIU does while dumping tasks is inject code into them
via ptrace to collect information that is only available to the process
itself. However, if we are in a seccomp mode where these processes are
prohibited from making these syscalls, then what CRIU does kills the task.

This patch adds a new ptrace option, PTRACE_O_SUSPEND_SECCOMP, that enables
a task from the init user namespace which has CAP_SYS_ADMIN and no seccomp
filters to disable (and re-enable) seccomp filters for another task so that
they can be successfully dumped (and restored). We restrict the set of
processes that can disable seccomp through ptrace because although today
ptrace can be used to bypass seccomp, there is some discussion of closing
this loophole in the future and we would like this patch to not depend on
that behavior and be future proofed for when it is removed.

Note that seccomp can be suspended before any filters are actually
installed; this behavior is useful on criu restore, so that we can suspend
seccomp, restore the filters, unmap our restore code from the restored
process' address space, and then resume the task by detaching and have the
filters resumed as well.

v2 changes:

* require that the tracer have no seccomp filters installed
* drop TIF_NOTSC manipulation from the patch
* change from ptrace command to a ptrace option and use this ptrace option
  as the flag to check. This means that as soon as the tracer
  detaches/dies, seccomp is re-enabled and as a corrollary that one can not
  disable seccomp across PTRACE_ATTACHs.

v3 changes:

* get rid of various #ifdefs everywhere
* report more sensible errors when PTRACE_O_SUSPEND_SECCOMP is incorrectly
  used

v4 changes:

* get rid of may_suspend_seccomp() in favor of a capable() check in ptrace
  directly

v5 changes:

* check that seccomp is not enabled (or suspended) on the tracer

Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
CC: Will Drewry <wad@chromium.org>
CC: Roland McGrath <roland@hack.frob.com>
CC: Pavel Emelyanov <xemul@parallels.com>
CC: Serge E. Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Andy Lutomirski <luto@amacapital.net>
[kees: access seccomp.mode through seccomp_mode() instead]
Signed-off-by: Kees Cook <keescook@chromium.org>
2015-07-15 11:52:52 -07:00
Linus Torvalds
97d6e2b636 final init.h ---> module.h code relocation
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVou0MAAoJEOvOhAQsB9HWrTcQAIptAvZQldKDjt0C6B9WNJlX
 YJ/HsoFPv3LXizBSH1T8OhMiV04b5bQoTxVIbZwbYHr7DCCRNhswKz+Yn4EGCw5v
 PiyihxWPPYeXO9mtxS1cmuiQ78GlUl0ilNPkDI4NsQSISgrz4hj5dr3dZLj2Wcv1
 pZqux5rrgJf06aoFD/7avS+e31HoLvglTrFnu0jdBs3G/lrjk0bjLX3PXFi2ACT7
 eD20rRskpgOIQBk6AjL4Pqq1fpcWIRNwF5CCdgg4SaDP5W3kFhpanRKfHtovYbQ4
 AC79M8SwDRGphNu0QJRtESeM9vpFNx0/9i+sbXRfbgbr/mDPbUCSaKvCdqDXVFHN
 gp7u6bQKx1KoDfWCFM9KTF7KBST0cSk1YMUtWWaWWZp0f8mih9elpWja8anGlHe1
 PlDY/BKGMpbrac1oVSzBmiT50b73C2BOrt9zAi/IrEwnQzmi2lvtnmYFLNhJhjjM
 aSntD0OmSD8sJcjB98a/cxOrKsFEpt93C/sGSvZ8M4MWOziQQUtY2ryhNdH0utmL
 QYqDaqoyuImvtwEBvidgVdNbOonNpBHljiPBgkDAtv6aMzxlrWrGGMaZlrWi0FDZ
 S+tllpwGDXfAshZOmE0yZEwpQL7vjb3y31G+TrwKKXJvsczRaK5o4Mc8LELxqS/n
 oAbZOMdu8Zy3ugTa5NDF
 =TcF6
 -----END PGP SIGNATURE-----

Merge tag 'module-final-v4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

Pull final init.h/module.h code relocation from Paul Gortmaker:
 "With the release of 4.2-rc2 done, we should not be seeing any new code
  added that gets upset by this small code move, and we've banked yet
  another complete week of testing with this move in place on top of
  4.2-rc1 via linux-next to ensure that remained true.

  Given that, I'd like to put it in now so that people formulating new
  work for 4.3-rc1 will be exposed to the ever so slightly stricter (but
  sensible) requirements wrt.  whether they are needing init.h vs.
  module.h macros, even if they are not using linux-next.

  The diffstat of the move is slightly asymmetrical due to needing to
  leave behind a couple #ifdef in the old location and add the same ones
  to the new location, but other than that, it is a 1:1 move, complete
  with the module_init/exit trailing semicolon that we can't fix.  That
  is, until/unless someone does a tree-wide sed fix of all the
  approximately 800 currently in tree users relying on it"

* tag 'module-final-v4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux:
  module: relocate module_init from init.h to module.h
2015-07-15 11:16:35 -07:00
Florian Westphal
dcebd3153e netfilter: add and use jump label for xt_tee
Don't bother testing if we need to switch to alternate stack
unless TEE target is used.

Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-07-15 18:18:06 +02:00
Florian Westphal
7814b6ec6d netfilter: xtables: don't save/restore jumpstack offset
In most cases there is no reentrancy into ip/ip6tables.

For skbs sent by REJECT or SYNPROXY targets, there is one level
of reentrancy, but its not relevant as those targets issue an absolute
verdict, i.e. the jumpstack can be clobbered since its not used
after the target issues absolute verdict (ACCEPT, DROP, STOLEN, etc).

So the only special case where it is relevant is the TEE target, which
returns XT_CONTINUE.

This patch changes ip(6)_do_table to always use the jump stack starting
from 0.

When we detect we're operating on an skb sent via TEE (percpu
nf_skb_duplicated is 1) we switch to an alternate stack to leave
the original one alone.

Since there is no TEE support for arptables, it doesn't need to
test if tee is active.

The jump stack overflow tests are no longer needed as well --
since ->stacksize is the largest call depth we cannot exceed it.

A much better alternative to the external jumpstack would be to just
declare a jumps[32] stack on the local stack frame, but that would mean
we'd have to reject iptables rulesets that used to work before.

Another alternative would be to start rejecting rulesets with a larger
call depth, e.g. 1000 -- in this case it would be feasible to allocate the
entire stack in the percpu area which would avoid one dereference.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-07-15 18:18:06 +02:00
Florian Westphal
e7c8899f3e netfilter: move tee_active to core
This prepares for a TEE like expression in nftables.
We want to ensure only one duplicate is sent, so both will
use the same percpu variable to detect duplication.

The other use case is detection of recursive call to xtables, but since
we don't want dependency from nft to xtables core its put into core.c
instead of the x_tables core.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-07-15 18:18:05 +02:00
Eric W. Biederman
085db2c045 netfilter: Per network namespace netfilter hooks.
- Add a new set of functions for registering and unregistering per
  network namespace hooks.

- Modify the old global namespace hook functions to use the per
  network namespace hooks in their implementation, so their remains a
  single list that needs to be walked for any hook (this is important
  for keeping the hook priority working and for keeping the code
  walking the hooks simple).

- Only allow registering the per netdevice hooks in the network
  namespace where the network device lives.

- Dynamically allocate the structures in the per network namespace
  hook list in nf_register_net_hook, and unregister them in
  nf_unregister_net_hook.

  Dynamic allocate is required somewhere as the number of network
  namespaces are not fixed so we might as well allocate them in the
  registration function.

  The chain of registered hooks on any list is expected to be small so
  the cost of walking that list to find the entry we are unregistering
  should also be small.

  Performing the management of the dynamically allocated list entries
  in the registration and unregistration functions keeps the complexity
  from spreading.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2015-07-15 18:17:26 +02:00
Eric W. Biederman
70aa996601 netfilter: kill nf_hooks_active
The function obscures what is going on in nf_hook_thresh and it's existence
requires computing the hook list twice.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2015-07-15 17:51:42 +02:00
David Milburn
af34d63763 libata: add ATA_HORKAGE_MAX_SEC_1024 to revert back to previous max_sectors limit
Since no longer limiting max_sectors to BLK_DEF_MAX_SECTORS (commit 34b48db66e),
data corruption may occur on ST380013AS drive configured on 82801JI (ICH10 Family)
SATA controller. This patch will allow the driver to limit max_sectors as before

 # cat /sys/block/sdb/queue/max_sectors_kb
 512

I was able to double the max_sectors_kb value up to 16384 on linux-4.2.0-rc2
before seeing corruption, but seems safer to use previous limit. Without this
patch max_sectors_kb will be 32767.

tj: Minor comment update.

Reported-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: David Milburn <dmilburn@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org # v3.19 and later
Fixes: 34b48db66e ("block: remove artifical max_hw_sectors cap")
2015-07-15 11:47:24 -04:00
Arne Fitzenreiter
71d126fd28 libata: add ATA_HORKAGE_NOTRIM
Some devices lose data on TRIM whether queued or not.  This patch adds
a horkage to disable TRIM.

tj: Collapsed unnecessary if() nesting.

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
2015-07-15 11:22:35 -04:00
Daniel Vetter
ca6e440577 Merge tag 'drm-intel-fixes-2015-07-15' into drm-intel-next-queued
Backmerge fixes since it's getting out of hand again with the massive
split due to atomic between -next and 4.2-rc. All the bugfixes in
4.2-rc are addressed already (by converting more towards atomic
instead of minimal duct-tape) so just always pick the version in next
for the conflicts in modeset code.

All the other conflicts are just adjacent lines changed.

Conflicts:
	drivers/gpu/drm/i915/i915_drv.h
	drivers/gpu/drm/i915/i915_gem_gtt.c
	drivers/gpu/drm/i915/intel_display.c
	drivers/gpu/drm/i915/intel_drv.h
	drivers/gpu/drm/i915/intel_ringbuffer.h

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2015-07-15 16:36:50 +02:00
Olof Johansson
b1d725ee58 Omap dts changes for v4.3 merge window. There are also related
changes for reemoteproc platform_data and audio options for
 omap2plus_defconfig to keep audio working when changing boards
 to use SIMPLE_CARD. The summary of changes is:
 
 - A large set of audio related changes for SIMPLE_CARD from
   Peter Ujfalusi <peter.ujfalusi@ti.com> for am335x and am437x
 
 - Pinctrl dts defines for dra7 virtual mode to configure timings
 
 - Change to use cpsw slave0 for dra7 Ethernet
 
 - Remove unconfigured and wrong l3-mux entry for dm816x
 
 - Add support for Gumstix Palo35 and TobiDuo boards, and  Overo
   PoP NAND and McBSP2
 
 - Start using new HDMI binding for tilcdc
 
 - Start using new sDMA crossbar for dra7
 
 - Start using rproc for am335x and am437x M3 coprocessor
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVpj6yAAoJEBvUPslcq6VzfckP/AvU56IuA4wHlnHgLGtXprhb
 etGAW40xAzWlBF+fZcIUkKnRmncJ59j5s9Ou9D47q0PvDobRDiqYsZUg7M4qd1SX
 DhiALUhZS1q5+JvW5CCUhz3kKsQ1iSicJE+0lSOmlHNfXK0r8DO868M6+TQqVHlW
 0B5bo9cKDjWxF19wQfUv1Q3PtYcTXZI/oDFGH3zD2PhPZQLkTGs9h2rhrmqqpcuj
 OH6qRUOQmpCVTjrcp1aqODn8qy3laivSH5TUyqsuYt7uPVIwPNtZFNLSCLHSs4o2
 N8EgOV/R09+4u4JRIXra1ooawJp+izSt6057180UZfkdnkV/qX9dYshs4v95QN1U
 iiv2fFTtSvlwHKAFn27LKS1crDtcNKDmlGePOnYufCfcRl+Zy6t48o49LBS7Xyoq
 nafdLpqSRhhjkNNwgSNaBLHbZS6alRnTQIDykLlVTkIcMXF13AN5yOZs2gqT5+HQ
 SLohf5PAb1u4iGRW+4vF5jGFKAANZEdpOMSxy1BVOKRsE712C81hTzgN1/z28IW5
 REB1OHMnguf78fIqnhPYl9ml69Q358YtLtHQacqzCxA8QpHn/dEe+F6CyJINCl53
 qJwg8UpEUQRheJJJTGlZ1tSpy7gnn89ZPx0QVQZPYYvO/fWA9C6Vq6RJ5PNTy69Q
 q7uHoCL0bETCNK0BiUEH
 =sPfQ
 -----END PGP SIGNATURE-----

Merge tag 'omap-for-v4.3/dt-pt1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt

Merge "omap dts changes for v4.3, part 1" from Tony Lindgren:

Omap dts changes for v4.3 merge window. There are also related
changes for reemoteproc platform_data and audio options for
omap2plus_defconfig to keep audio working when changing boards
to use SIMPLE_CARD. The summary of changes is:

- A large set of audio related changes for SIMPLE_CARD from
  Peter Ujfalusi <peter.ujfalusi@ti.com> for am335x and am437x

- Pinctrl dts defines for dra7 virtual mode to configure timings

- Change to use cpsw slave0 for dra7 Ethernet

- Remove unconfigured and wrong l3-mux entry for dm816x

- Add support for Gumstix Palo35 and TobiDuo boards, and  Overo
  PoP NAND and McBSP2

- Start using new HDMI binding for tilcdc

- Start using new sDMA crossbar for dra7

- Start using rproc for am335x and am437x M3 coprocessor

* tag 'omap-for-v4.3/dt-pt1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (32 commits)
  ARM: dts: am335x-evm: Switch using simple-audio-card for audio support
  ARM: dts: am335x-evm: Add sleep pin settings for mcasp1
  ARM: dts: am335x-evm: Rename pinctrl section for McASP1
  ARM: dts: am335x-evm: Fix mcasp1 node's indentation
  ARM: dts: am335x-evmsk: Switch using simple-audio-card for audio support
  ARM: dts: am335x-evmsk: Add sleep pin settings for mcasp1
  ARM: dts: am335x-evmsk: Fix mcasp1 node's indentation
  ARM: dts: am437x-gp-evm: Enable analog audio via simple-card
  ARM: dts: am437x-gp-evm: McASP1 node for audio support
  ARM: dts: am437x-gp-evm: Add node for tlv320aic3106 audio codec
  ARM: dts: am437x-gp-evm: Rename fixed regulator vmmcsd_fixed to evm_v3_3d
  ARM: dts: am437x-gp-evm: Add gpio-hog for configuring the display/audio mux
  ARM: dts: am43xx-epos-evm: Enable analog audio via simple-card
  ARM: dts: am43xx-epos-evm: Add node for tlv320aic3111 audio codec
  ARM: dts: am43xx-epos-evm: McASP1 node for audio support
  ARM: dts: am43xx-epos-evm: Add regulator for VBAT and DCDC4 of tps65218
  ARM: dts: am43xx-epos-evm: Add gpio-hog for configuring the display/audio mux
  ARM: dts: am437x-sk-evm: Switch using simple-audio-card for audio support
  ARM: dts: am437x-sk-evm: Add sleep pin settings for mcasp1
  ARM: omap2plus_defconfig: Enable audio related config options
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
2015-07-15 10:17:26 -04:00
Luck, Tony
4c62360d75 efi: Handle memory error structures produced based on old versions of standard
The memory error record structure includes as its first field a
bitmask of which subsequent fields are valid. The allows new fields
to be added to the structure while keeping compatibility with older
software that parses these records. This mechanism was used between
versions 2.2 and 2.3 to add four new fields, growing the size of the
structure from 73 bytes to 80. But Linux just added all the new
fields so this test:
	if (gdata->error_data_length >= sizeof(*mem_err))
		cper_print_mem(newpfx, mem_err);
	else
		goto err_section_too_small;
now make Linux complain about old format records being too short.

Add a definition for the old format of the structure and use that
for the minimum size check. Pass the actual size to cper_print_mem()
so it can sanity check the validation_bits field to ensure that if
a BIOS using the old format sets bits as if it were new, we won't
access fields beyond the end of the structure.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
2015-07-15 13:30:38 +01:00
Daniel Vetter
346add7834 drm/i915: Use expcitly fixed type in compat32 structs
I was confused shortly whether the compat was needed for the int,
until I noticed the pointer in the original.

Also remove typedef.

v2: Review from Chris.
- Add comments.
- Also change the int param in the original structure.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-07-15 11:39:59 +02:00
Michael S. Tsirkin
c9ddbac9c8 PCI: Restore PCI_MSIX_FLAGS_BIRMASK definition
09a2c73ddf ("PCI: Remove unused PCI_MSIX_FLAGS_BIRMASK definition")
removed PCI_MSIX_FLAGS_BIRMASK from an exported header because it was
unused in the kernel.  But that breaks user programs that were using it
(QEMU in particular).

Restore the PCI_MSIX_FLAGS_BIRMASK definition.

[bhelgaas: changelog]
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org	# v3.13+
2015-07-14 18:27:46 -05:00
Tejun Heo
83cb8557e8 percpu: update incorrect comment for this_cpu_*() operations
this_cpu_*() ops have been protected against both preemption and
interrupts for quite a while now.  We apparently forgot to update the
comment.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux-foundation.org>
2015-07-14 17:43:56 -04:00
Aleksa Sarai
49b786ea14 cgroup: implement the PIDs subsystem
Adds a new single-purpose PIDs subsystem to limit the number of
tasks that can be forked inside a cgroup. Essentially this is an
implementation of RLIMIT_NPROC that applies to a cgroup rather than a
process tree.

However, it should be noted that organisational operations (adding and
removing tasks from a PIDs hierarchy) will *not* be prevented. Rather,
the number of tasks in the hierarchy cannot exceed the limit through
forking. This is due to the fact that, in the unified hierarchy, attach
cannot fail (and it is not possible for a task to overcome its PIDs
cgroup policy limit by attaching to a child cgroup -- even if migrating
mid-fork it must be able to fork in the parent first).

PIDs are fundamentally a global resource, and it is possible to reach
PID exhaustion inside a cgroup without hitting any reasonable kmemcg
policy. Once you've hit PID exhaustion, you're only in a marginally
better state than OOM. This subsystem allows PID exhaustion inside a
cgroup to be prevented.

Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-07-14 17:29:23 -04:00
Aleksa Sarai
7e47682ea5 cgroup: allow a cgroup subsystem to reject a fork
Add a new cgroup subsystem callback can_fork that conditionally
states whether or not the fork is accepted or rejected by a cgroup
policy. In addition, add a cancel_fork callback so that if an error
occurs later in the forking process, any state modified by can_fork can
be reverted.

Allow for a private opaque pointer to be passed from cgroup_can_fork to
cgroup_post_fork, allowing for the fork state to be stored by each
subsystem separately.

Also add a tagging system for cgroup_subsys.h to allow for CGROUP_<TAG>
enumerations to be be defined and used. In addition, explicitly add a
CGROUP_CANFORK_COUNT macro to make arrays easier to define.

This is in preparation for implementing the pids cgroup subsystem.

Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-07-14 17:29:23 -04:00
Sagi Grimberg
3fdf70acec IB/srp: Avoid using uninitialized variable
We might return res which is not initialized. Also
reduce code duplication by exporting srp_parse_tmo so
srp_tmo_set can reuse it.

Detected by Coverity.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Jenny Falkovich <jennyf@mellanox.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-07-14 13:20:09 -04:00
Hal Rosenstock
4139032b48 IB: Add rdma_cap_ib_switch helper and use where appropriate
Persuant to Liran's comments on node_type on linux-rdma
mailing list:

In an effort to reform the RDMA core and ULPs to minimize use of
node_type in struct ib_device, an additional bit is added to
struct ib_device for is_switch (IB switch). This is needed
to be initialized by any IB switch device driver. This is a
NEW requirement on such device drivers which are all
"out of tree".

In addition, an ib_switch helper was added to ib_verbs.h
based on the is_switch device bit rather than node_type
(although those should be consistent).

The RDMA core (MAD, SMI, agent, sa_query, multicast, sysfs)
as well as (IPoIB and SRP) ULPs are updated where
appropriate to use this new helper. In some cases,
the helper is now used under the covers of using
rdma_[start end]_port rather than the open coding
previously used.

Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Reviewed-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Tested-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Hal Rosenstock <hal@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-07-14 13:20:08 -04:00
Nishanth Menon
601b29aa48 pinctrl: dra: dt-bindings: Add virtual mode configuration option
In addition to the regular mux configuration such as mux mode 1,
2 etc, certain pins of DRA7 require to have "virtual mode" also
programmed. This allows for predefined delay characteristics to
be used by the SoC to meet timing characterstics needed for the
interface.

Provide easy to use macro to do the same.

It is important to note that the official TI guidelines recommend
to do as minimal pin reconfiguration beyond the bootloader given
the design of the hardware involved which can result in substantial
glitches which may impair functionality of certain peripherals.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-07-14 04:15:11 -07:00
Olof Johansson
216883a420 Renesas ARM Based SoC DT Updates for v4.3
* Configure IRLM mode via DT on r8a7779 SoC
 * Use "arm,gic-400" for GIC on r8a777[01349] and r8a73a4 SoCs
 * Add pinctrl and gpio-hog for lcdc0 to armadillo800eva board
 * EtherAVB DT support for r8a7790 SoC
 * Minimal device tree for r8a7793 SoC and its Gose board
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJVn2b7AAoJENfPZGlqN0++a/UQAKDrWeL9Ju7UIWFR9VzZHb7L
 8daaSWHT54JKgdKOa94fgkTTdSG86El+sLXXGpTVIz9rcItNrfdZ7zqrAgkja1XS
 couQl2KfkNnBjlNocQ13cpSYDj1DGfuflSimcR2KJb7EhTGHnLZLl0GC+gSnIOQo
 KJQ1TGMhNRViWdfjdAROg/rYKfhaVW93qEKatkz47nN8fIAg9q3wYzsE1ePzvG9U
 dJ6/hhoVY8ibj0TIotRuTmyDfbnoX3m/Q+4InGBKOkjCdf8SauKBrRVQfkPkjKE0
 XWQDbIZZBoV62vhYSSi5mJ9s/ap6onS8FwGC5kcu7nFTVBeRCJgxFJen7oNkiZXN
 MoDoCZKDdgHbK/I/JRO9xBewRPAs2rvsZGyd/j0gp2X1l53XqQTpjNiwvZ7rrsuA
 p+gu1KI7Bgyhi8nQTMsLVF64N7n5ZaYkoopTeU+vXpbSajaZtGByVgcQInFTm4wn
 /pujdJ3wsDdsYDvWcU1oBQjp4uspXesyeLpI6tio7/nzwhF8apZ/HFwuaGnRH2cA
 2VYzConXI41GVwMvEyu7hLEdh9aZPKyPnz8XKIunHEV5XejJyWRPPTbyCOegjM27
 7GrC+2kaIe6Wo0iOS3MpmZM66rNzfLJm5rvGaTWpa0ToRtuyC+e9tzZNAxGgZSny
 tlNVACQ6Xn44Sv120Yyu
 =vwn6
 -----END PGP SIGNATURE-----

Merge tag 'renesas-dt-for-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt

Merge "Renesas ARM Based SoC DT Updates for v4.3" from Simon Horman:

* Configure IRLM mode via DT on r8a7779 SoC
* Use "arm,gic-400" for GIC on r8a777[01349] and r8a73a4 SoCs
* Add pinctrl and gpio-hog for lcdc0 to armadillo800eva board
* EtherAVB DT support for r8a7790 SoC
* Minimal device tree for r8a7793 SoC and its Gose board

* tag 'renesas-dt-for-v4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: r8a7779: Configure IRLM mode via DT
  ARM: shmobile: r8a7794 dtsi: Use "arm,gic-400" for GIC
  ARM: shmobile: r8a7793 dtsi: Use "arm,gic-400" for GIC
  ARM: shmobile: r8a7791 dtsi: Use "arm,gic-400" for GIC
  ARM: shmobile: r8a7790 dtsi: Use "arm,gic-400" for GIC
  ARM: shmobile: r8a73a4 dtsi: Use "arm,gic-400" for GIC
  ARM: shmobile: armadillo800eva dts: Add pinctrl and gpio-hog for lcdc0
  ARM: shmobile: r8a7790: add EtherAVB DT support
  ARM: shmobile: r8a7790: add EtherAVB clocks
  ARM: shmobile: r8a7793: add minimal Gose board device tree
  ARM: shmobile: add r8a7793 minimal SoC device tree
2015-07-14 11:51:16 +02:00
Frank Li
787b4271a6 clk: imx: add imx6ul clk tree support
Add imx6ul clock driver support.

Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Bai Ping <b51503@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2015-07-14 15:02:13 +08:00
Herbert Xu
ba75e15fa0 crypto: aead - Add type-safe function for freeing instances
This patch adds a type-safe function for freeing AEAD instances
to struct aead_instance.  This replaces the existing free function
in struct crypto_template which does not know the type of the
instance that it's freeing.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-14 14:56:45 +08:00
Herbert Xu
319382a697 crypto: api - Add instance free function to crypto_type
Currently the task of freeing an instance is given to the crypto
template.  However, it has no type information on the instance so
we have to resort to checking type information at runtime.

This patch introduces a free function to crypto_type that will be
used to free an instance.  This can then be used to free an instance
in a type-safe manner.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-14 14:56:45 +08:00
Herbert Xu
2c11a3f970 crypto: aead - Add aead_queue interface
This patch adds a type-safe queueing interface for AEAD.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-07-14 14:56:44 +08:00