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Commit Graph

609507 Commits

Author SHA1 Message Date
Rafael J. Wysocki
273b5a4836 Merge branch 'acpi-pmic'
* acpi-pmic:
  ACPI / PMIC: remove modular references from non-modular code
  ACPI / PMIC: intel: initialize result to 0
  ACPI / PMIC: intel: add REGS operation region support
  ACPI / PMIC: Add opregion driver for Intel BXT WhiskeyCove PMIC
  ACPI / PMIC: modify the pen function signature to take bit field

Conflicts:
	drivers/acpi/Makefile
2016-07-25 13:42:48 +02:00
Rafael J. Wysocki
6149dffcb5 Merge branches 'acpi-processor', 'acpi-cppc', 'acpi-apei' and 'acpi-sleep'
* acpi-processor:
  ACPI: enable ACPI_PROCESSOR_IDLE on ARM64
  arm64: add support for ACPI Low Power Idle(LPI)
  drivers: firmware: psci: initialise idle states using ACPI LPI
  cpuidle: introduce CPU_PM_CPU_IDLE_ENTER macro for ARM{32, 64}
  arm64: cpuidle: drop __init section marker to arm_cpuidle_init
  ACPI / processor_idle: Add support for Low Power Idle(LPI) states
  ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE

* acpi-cppc:
  mailbox: pcc: Add PCC request and free channel declarations
  ACPI / CPPC: Prevent cpc_desc_ptr points to the invalid data
  ACPI: CPPC: Return error if _CPC is invalid on a CPU

* acpi-apei:
  ACPI / APEI: Add Boot Error Record Table (BERT) support
  ACPI / einj: Make error paths more talkative
  ACPI / einj: Convert EINJ_PFX to proper pr_fmt

* acpi-sleep:
  ACPI: Execute _PTS before system reboot
2016-07-25 13:42:25 +02:00
Rafael J. Wysocki
f6bc0a168e Merge branches 'acpi-ec', 'acpi-video', 'acpi-button' and 'acpi-thermal'
* acpi-ec:
  ACPI / EC: Remove wrong ECDT correction quirks
  ACPI / EC: Cleanup boot EC code using acpi_ec_alloc()

* acpi-video:
  ACPI / video: Dummy acpi_video_register should return error code
  ACPI / video: skip evaluating _DOD when it does not exist
  ACPI / video: Thinkpad X201 Tablet needs video_detect_force_video

* acpi-button:
  ACPI / button: Add quirks for initial lid state notification
  ACPI / button: Refactor functions to eliminate redundant code
  ACPI / button: Remove initial lid state notification

* acpi-thermal:
  ACPI / thermal: Remove create_workqueue()
2016-07-25 13:42:00 +02:00
Rafael J. Wysocki
25474279e8 Merge branches 'acpi-bus', 'acpi-pci', 'acpica' and 'acpi-doc'
* acpi-bus:
  ACPI / bus: Support for platform initiated graceful shutdown
  ACPI / bus: Correct the comments about acpi_subsystem_init()
  ACPI / bus: Use acpi_handle_debug() in acpi_print_osc_error()

* acpi-pci:
  ACPI / PCI: make pci_slot explicitly non-modular
  ACPI / PCI: pci_slot: Use generic pr_debug utility
  ACPI / PCI: pci_slot: Use more common logging style

* acpica:
  ACPICA: Linux: Enable ACPI_MUTEX_DEBUG for Linux kernel

* acpi-doc:
  ACPI / debugger: Add AML debugger documentation
  ACPI: Add documentation describing ACPICA release automation
2016-07-25 13:41:25 +02:00
Rafael J. Wysocki
d5f017b796 Merge branch 'acpi-tables'
* acpi-tables:
  ACPI: Rename configfs.c to acpi_configfs.c to prevent link error
  ACPI: add support for loading SSDTs via configfs
  ACPI: add support for configfs
  efi / ACPI: load SSTDs from EFI variables
  spi / ACPI: add support for ACPI reconfigure notifications
  i2c / ACPI: add support for ACPI reconfigure notifications
  ACPI: add support for ACPI reconfiguration notifiers
  ACPI / scan: fix enumeration (visited) flags for bus rescans
  ACPI / documentation: add SSDT overlays documentation
  ACPI: ARM64: support for ACPI_TABLE_UPGRADE
  ACPI / tables: introduce ARCH_HAS_ACPI_TABLE_UPGRADE
  ACPI / tables: move arch-specific symbol to asm/acpi.h
  ACPI / tables: table upgrade: refactor function definitions
  ACPI / tables: table upgrade: use cacheable map for tables

Conflicts:
	arch/arm64/include/asm/acpi.h
2016-07-25 13:41:01 +02:00
Rafael J. Wysocki
d85f4eb699 Merge branch 'acpi-numa'
* acpi-numa:
  ACPI / NUMA: Enable ACPI based NUMA on ARM64
  arm64, ACPI, NUMA: NUMA support based on SRAT and SLIT
  ACPI / processor: Add acpi_map_madt_entry()
  ACPI / NUMA: Improve SRAT error detection and add messages
  ACPI / NUMA: Move acpi_numa_memory_affinity_init() to drivers/acpi/numa.c
  ACPI / NUMA: remove unneeded acpi_numa=1
  ACPI / NUMA: move bad_srat() and srat_disabled() to drivers/acpi/numa.c
  x86 / ACPI / NUMA: cleanup acpi_numa_processor_affinity_init()
  arm64, NUMA: Cleanup NUMA disabled messages
  arm64, NUMA: rework numa_add_memblk()
  ACPI / NUMA: move acpi_numa_slit_init() to drivers/acpi/numa.c
  ACPI / NUMA: Move acpi_numa_arch_fixup() to ia64 only
  ACPI / NUMA: remove duplicate NULL check
  ACPI / NUMA: Replace ACPI_DEBUG_PRINT() with pr_debug()
  ACPI / NUMA: Use pr_fmt() instead of printk
2016-07-25 13:40:39 +02:00
Mark Brown
dec34e8b67 Merge remote-tracking branch 'spi/fix/locking' into spi-next 2016-07-25 11:48:51 +01:00
Mark Brown
ef4d96ec4a spi: Split bus and I/O locking
The current SPI code attempts to use bus_lock_mutex for two purposes. One
is to implement spi_bus_lock() which grants exclusive access to the bus.
The other is to serialize access to the physical hardware. This duplicate
purpose causes confusion which leads to cases where access is not locked
when a caller holds the bus lock mutex. Fix this by splitting out the I/O
functionality into a new io_mutex.

This means taking both mutexes in the DMA path, replacing the existing
mutex with the new I/O one in the message pump (the mutex now always
being taken in the message pump) and taking the bus lock mutex in
spi_sync(), allowing __spi_sync() to have no mutex handling.

While we're at it hoist the mutex further up the message pump before we
power up the device so that all power up/down of the block is covered by
it and there are no races with in-line pumping of messages.

Reported-by: Rich Felker <dalias@libc.org>
Tested-by: Rich Felker <dalias@libc.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-25 11:47:52 +01:00
David Vrabel
fbc872c38c xen/evtchn: add IOCTL_EVTCHN_RESTRICT
IOCTL_EVTCHN_RESTRICT limits the file descriptor to being able to bind
to interdomain event channels from a specific domain.  Event channels
that are already bound continue to work for sending and receiving
notifications.

This is useful as part of deprivileging a user space PV backend or
device model (QEMU).  e.g., Once the device model as bound to the
ioreq server event channels it can restrict the file handle so an
exploited DM cannot use it to create or bind to arbitrary event
channels.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2016-07-25 10:59:31 +01:00
David S. Miller
bc0c419e0b Merge branch 'mlxsw-port-mirroring'
Jiri Pirko says:

====================
mlxsw: implement port mirroring offload

This patchset introduces tc matchall classifier and its offload
to Spectrum hardware. In combination with mirred action, defined port mirroring
setup is offloaded by mlxsw/spectrum driver.

The commands used for creating mirror ports:

tc qdisc  add dev eth25 handle ffff: ingress
tc filter add dev eth25 parent ffff:            \
        matchall skip_sw                        \
        action mirred egress mirror             \
        dev eth27

tc qdisc add dev eth25 handle 1: root prio
tc filter add dev eth25 parent 1:               \
        matchall skip_sw                        \
        action mirred egress mirror             \
        dev eth27

These patches contain:
 - Resource query implementation
 - Hardware port mirorring support for spectrum.
 - Definition of the matchall traffic classifier.
 - General support for hw-offloading for that classifier.
 - Specific spectrum implementaion for matchall offloading.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:12:00 -07:00
Yotam Gigi
763b4b70af mlxsw: spectrum: Add support in matchall mirror TC offloading
This patch offloads port mirroring directives to hw using the matchall TC
with action mirror. It includes both the implementation of the
ndo_setup_tc function for the spectrum driver and the spectrum hardware
offload configuration code.

The hardware offload code is basically two new functions which are capable
of adding and removing a new mirror ports pair. It is done using the MPAT,
MPAR and SBIB registers:
 - A new Switch-Port Analyzer (SPAN) entry is added using MPAT to the 'to'
   port.
 - The 'to' port is bound to the SPAN entry using MPAR register.
 - In case of egress SPAN, the 'to' port gets a new internal shared
   buffer using SBIB register.

In addition, a new database was added to the mlxsw_sp struct to store all
the SPAN entries and their bound ports list. The number of supported SPAN
entries is determined by resource query.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:12:00 -07:00
Yotam Gigi
56a20680f7 net/sched: act_mirred: Add helper inlines to access tcf_mirred info.
The helper function is_tcf_mirred_mirror helps finding whether an action
struct is of type mirred and is configured to be of type mirror.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:12:00 -07:00
Yotam Gigi
230190548b mlxsw: reg: Add the Monitoring Port Analyzer register
The MPAR register is used to bind ports to a SPAN entry (which was
created using MPAT register) and thus mirror their traffic (ingress /
egress) to a different port.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:11:59 -07:00
Yotam Gigi
43a4685620 mlxsw: reg: Add Monitoring Port Analyzer Table register
The MPAT register is used to query and configure the Switch Port Analyzer
(SPAN) table. This register is used to configure a port as a mirror output
port, while after that a mirrored input port can be bound using MPAR
register.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:11:59 -07:00
Yotam Gigi
51ae8cc662 mlxsw: reg: Add Shared Buffer Internal Buffer register
The SBIB register configures per port buffer for internal use. This
register is used to configure an egress mirror buffer on the egress port
which does the mirroring.

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:11:59 -07:00
Yotam Gigi
b87f7936a9 net/sched: Add match-all classifier hw offloading.
Following the work that have been done on offloading classifiers like u32
and flower, now the match-all classifier hw offloading is possible. if
the interface supports tc offloading.

To control the offloading, two tc flags have been introduced: skip_sw and
skip_hw. Typical usage:

tc filter add dev eth25 parent ffff: 	\
	matchall skip_sw		\
	action mirred egress mirror	\
	dev eth27

Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:11:59 -07:00
Jiri Pirko
bf3994d2ed net/sched: introduce Match-all classifier
The matchall classifier matches every packet and allows the user to apply
actions on it. This filter is very useful in usecases where every packet
should be matched, for example, packet mirroring (SPAN) can be setup very
easily using that filter.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:11:59 -07:00
Nogah Frankel
ded821c8d3 mlxsw: pci: Add max span resources to resources query
Add max span resources to resources query.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:11:59 -07:00
Nogah Frankel
57d316ba20 mlxsw: pci: Add resources query implementation.
Add resources query implementation. If exists, query the HW for its
builtin resources instead of having them as consts in the code.

Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 23:11:58 -07:00
Kristian Evensen
bfe9b9d2df cdc_ether: Improve ZTE MF823/831/910 handling
The firmware in several ZTE devices (at least the MF823/831/910
modems/mifis) use OS fingerprinting to determine which type of device to
export. In addition, these devices export a REST API which can be used to
control the type of device. So far, on Linux, the devices have been seen as
RNDIS or CDC Ether.

When CDC Ether is used, devices of the same type are, as with RNDIS,
exported with the same, bogus random MAC address. In addition, the devices
(at least on all firmware revisions I have found) use the bogus MAC when
sending traffic routed from external networks. And as a final feature, the
devices sometimes export the link state incorrectly. There are also
references online to several other ZTE devices displaying this behavior,
with several different PIDs and MAC addresses.

This patch tries to improve the handling of ZTE devices by doing the
following:

* Create a new driver_info-struct that is used by ZTE devices that do not
have an explicit entry in the product table. This struct is the same as the
default cdc_ether driver info, but a new bind- and an rx_fixup-function
have been added.

* In the new bind function, we check if we have read a random MAC from the
device. If we have, then we generate a new random MAC address. This will
ensure that all devices get a unique MAC.

* The rx_fixup-function replaces the destination MAC address in the skb
with that of the device. I have not seen a revision of these devices that
behaves correctly (i.e., sets the right destination MAC), so I chose not to
do any comparison with for example the known, bogus addresses.

* The MF823/MF832/MF910 sometimes export cdc carrier on twice on connect
(the correct behavior is off then on). Work around this by manually setting
carrier to off if an on-notification is received and the NOCARRIER-bit is
not set.

This change will affect all devices, but it should take care of similar
mistakes made by other manufacturers. I tried to think of/look/test for
problems/regressions that could be introduced by this behavior, but could
not find any. However, my familiarity with this code path is not that
great, so there could be something I have overlooked.

I have tested this patch with multiple revisions of all three devices, and
they behave as expected. In other words, they all got a valid, random MAC,
the correct operational state and I can receive/sent traffic without
problems. I also tested with some other cdc_ether devices I have and did
not find any problems/regressions caused by the two general changes.

v3->v4:
* Forgot to remove unused variables, sorry about that (thanks David
Miller).

v2->v3:
* I had forgot to remove the random MAC generation from usbnet_cdc_bind()
(thanks Oliver).
* Rework logic in the ZTE bind-function a bit.

v1->v2:
* Only generate random MAC for ZTE devices (thanks Oliver Neukum).
* Set random MAC and do RX fixup for all ZTE devices that do not have a
product-entry, as the bogus MAC have been seen on devices with several
different PIDs/MAC addresses. In other words, it seems to be the default
behavior of ZTE CDC Ether devices (thanks Lars Melin).

Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 22:16:03 -07:00
David S. Miller
c42d7121fb Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Pablo Neira Ayuso says:

====================
Netfilter/IPVS updates for net-next

The following patchset contains Netfilter/IPVS updates for net-next,
they are:

1) Count pre-established connections as active in "least connection"
   schedulers such that pre-established connections to avoid overloading
   backend servers on peak demands, from Michal Kubecek via Simon Horman.

2) Address a race condition when resizing the conntrack table by caching
   the bucket size when fulling iterating over the hashtable in these
   three possible scenarios: 1) dump via /proc/net/nf_conntrack,
   2) unlinking userspace helper and 3) unlinking custom conntrack timeout.
   From Liping Zhang.

3) Revisit early_drop() path to perform lockless traversal on conntrack
   eviction under stress, use del_timer() as synchronization point to
   avoid two CPUs evicting the same entry, from Florian Westphal.

4) Move NAT hlist_head to nf_conn object, this simplifies the existing
   NAT extension and it doesn't increase size since recent patches to
   align nf_conn, from Florian.

5) Use rhashtable for the by-source NAT hashtable, also from Florian.

6) Don't allow --physdev-is-out from OUTPUT chain, just like
   --physdev-out is not either, from Hangbin Liu.

7) Automagically set on nf_conntrack counters if the user tries to
   match ct bytes/packets from nftables, from Liping Zhang.

8) Remove possible_net_t fields in nf_tables set objects since we just
   simply pass the net pointer to the backend set type implementations.

9) Fix possible off-by-one in h323, from Toby DiPasquale.

10) early_drop() may be called from ctnetlink patch, so we must hold
    rcu read size lock from them too, this amends Florian's patch 
    coming in this batch, from Liping Zhang.

11) Use binary search to validate jump offset in x_tables, this
    addresses the O(n!) validation that was introduced recently
    resolve security issues with unpriviledge namespaces, from Florian.

12) Fix reference leak to connlabel in error path of nft_ct, from Zhang.

13) Three updates for nft_log: Fix log prefix leak in error path. Bail
    out on loglevel larger than debug in nft_log and set on the new
    NF_LOG_F_COPY_LEN flag when snaplen is specified. Again from Zhang.

14) Allow to filter rule dumps in nf_tables based on table and chain
    names.

15) Simplify connlabel to always use 128 bits to store labels and
    get rid of unused function in xt_connlabel, from Florian.

16) Replace set_expect_timeout() by mod_timer() from the h323 conntrack
    helper, by Gao Feng.

17) Put back x_tables module reference in nft_compat on error, from
    Liping Zhang.

18) Add a reference count to the x_tables extensions cache in
    nft_compat, so we can remove them when unused and avoid a crash
    if the extensions are rmmod, again from Zhang.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 22:02:36 -07:00
Linus Torvalds
dd95069545 hwmon updates for v4.8
New drivers for FTS BMC "Teutates", TI INA3221, and Sensirion SHT3x.
 Added support for Microchip MCP9808 and TI TMP461.
 Cleanup and minor fixes in various drivers.
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Merge tag 'hwmon-for-linus-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:

 - New drivers for FTS BMC "Teutates", TI INA3221, and Sensirion SHT3x.

 - Added support for Microchip MCP9808 and TI TMP461.

 - Cleanup and minor fixes in various drivers.

* tag 'hwmon-for-linus-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (37 commits)
  Documentation: dtb: xgene: Add hwmon dts binding documentation
  hwmon: (ftsteutates) Remove unused including <linux/version.h>
  hwmon: (adt7411) set bit 3 in CFG1 register
  hwmon: Add driver for FTS BMC chip "Teutates"
  hwmon: (sht3x) add humidity heater element control
  hwmon: (jc42) Add support for generic JC-42.4 devicetree binding
  dt/bindings: Add bindings for JC-42.4 compatible temperature sensors
  hwmon: (tmp102) Convert to use regmap, and drop local cache
  hwmon: (tmp102) Rework chip configuration
  hwmon: (tmp102) Improve handling of initial read delay
  hwmon: (lm90) Drop unnecessary else statements
  hwmon: (lm90) Use bool for valid flag
  hwmon: (lm90) Read limit registers only once
  hwmon: (lm90) Simplify read functions
  hwmon: (lm90) Use devm_hwmon_device_register_with_groups
  hwmon: (lm90) Use devm_add_action for cleanup
  hwmon: (lm75) Convert to use regmap
  hwmon: (lm75) Add update_interval attribute
  hwmon: (lm75) Drop lm75_read_value and lm75_write_value
  hwmon: (lm75) Handle cleanup with devm_add_action
  ...
2016-07-24 21:10:30 -07:00
Linus Torvalds
52770c37db SH Drivers Updates for v4.8
* Drop us of SH Drivers on Renesas ARM Based SoCs
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Merge tag 'renesas-sh-drivers-for-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas

Pull SH drivers updates from Simon Horman:
 "Drop use of SH Drivers on Renesas ARM Based SoCs.

  I expect this to be my last pull request for these drivers as it
  removes usage of them from Renesas ARM Based SoCs and my
  co-maintenance of them.

  The drivers are still used by some SH SoCs and listed under SUPERH in
  the MAINTAINERS file"

* tag 'renesas-sh-drivers-for-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  MAINTAINERS: Drop drivers/sh/ for Renesas ARM
  drivers: sh: Stop using the legacy clock domain on ARM
2016-07-24 20:56:29 -07:00
Linus Torvalds
b7545b79a1 USB update for 4.8-rc1
Here's the big USB driver update for 4.8-rc1.  Lots of the normal stuff
 in here, musb, gadget, xhci, and other updates and fixes.  All of the
 details are in the shortlog.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB updates from Greg KH:
 "Here's the big USB driver update for 4.8-rc1.  Lots of the normal
  stuff in here, musb, gadget, xhci, and other updates and fixes.  All
  of the details are in the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (169 commits)
  cdc-acm: beautify probe()
  cdc-wdm: use the common CDC parser
  cdc-acm: cleanup error handling
  cdc-acm: use the common parser
  usbnet: move the CDC parser into USB core
  usb: musb: sunxi: Simplify dr_mode handling
  usb: musb: sunxi: make unexported symbols static
  usb: musb: cppi41: add dma channel tracepoints
  usb: musb: cppi41: move struct cppi41_dma_channel to header
  usb: musb: cleanup cppi_dma header
  usb: musb: gadget: add usb-request tracepoints
  usb: musb: host: add urb tracepoints
  usb: musb: add tracepoints to dump interrupt events
  usb: musb: add tracepoints for register access
  usb: musb: dsps: use musb register read/write wrappers instead
  usb: musb: switch dev_dbg to tracepoints
  usb: musb: add tracepoints support for debugging
  usb: quirks: Add no-lpm quirk for Elan
  phy: rcar-gen3-usb2: fix mutex_lock calling in interrupt
  phy: rockhip-usb: use devm_add_action_or_reset()
  ...
2016-07-24 17:22:18 -07:00
Linus Torvalds
721413aff2 TTY/Serial driver update for 4.8-rc1
Here is the big tty and serial driver update for 4.8-rc1.
 
 Lots of good cleanups from Jiri on a number of vt and other tty related
 things, and the normal driver updates.  Full details are in the
 shortlog.
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial driver updates from Greg KH:
 "Here is the big tty and serial driver update for 4.8-rc1.

  Lots of good cleanups from Jiri on a number of vt and other tty
  related things, and the normal driver updates.  Full details are in
  the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (90 commits)
  tty/serial: atmel: enforce tasklet init and termination sequences
  serial: sh-sci: Stop transfers in sci_shutdown()
  serial: 8250_ingenic: drop #if conditional surrounding earlycon code
  serial: 8250_mtk: drop !defined(MODULE) conditional
  serial: 8250_uniphier: drop !defined(MODULE) conditional
  earlycon: mark earlycon code as __used iif the caller is built-in
  tty/serial/8250: use mctrl_gpio helpers
  serial: mctrl_gpio: enable API usage only for initialized mctrl_gpios struct
  serial: mctrl_gpio: add modem control read routine
  tty/serial/8250: make UART_MCR register access consistent
  serial: 8250_mid: Read RX buffer on RX DMA timeout for DNV
  serial: 8250_dma: Export serial8250_rx_dma_flush()
  dmaengine: hsu: Export hsu_dma_get_status()
  tty: serial: 8250: add CON_CONSDEV to flags
  tty: serial: samsung: add byte-order aware bit functions
  tty: serial: samsung: fixup accessors for endian
  serial: sirf: make fifo functions static
  serial: mps2-uart: make driver explicitly non-modular
  serial: mvebu-uart: free the IRQ in ->shutdown()
  serial/bcm63xx_uart: use correct alias naming
  ...
2016-07-24 17:14:37 -07:00
Linus Torvalds
25a0dc4be8 Staging / IIO driver update for 4.8-rc1
Here is the big Staging and IIO driver update for 4.8-rc1.
 
 We ended up adding more code than removing, again, but it's not all that
 bad.  Lots of cleanups all over the staging tree, and new IIO drivers,
 full details in the shortlog.
 
 All of these have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging and IIO driver updates from Greg KH:
 "Here is the big Staging and IIO driver update for 4.8-rc1.

  We ended up adding more code than removing, again, but it's not all
  that bad.  Lots of cleanups all over the staging tree, and new IIO
  drivers, full details in the shortlog.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'staging-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (417 commits)
  drivers:iio:accel:mma8452: removed unwanted return statements
  drivers:iio:accel:mma8452: added cleanup provision in case of failure.
  iio: Add iio.git tree to MAINTAINERS
  iio:st_pressure: clean useless static channel initializers
  iio:st_pressure:lps22hb: temperature support
  iio:st_pressure:lps22hb: open drain support
  iio:st_pressure: temperature triggered buffering
  iio:st_pressure: document sampling gains
  iio:st_pressure: align storagebits on power of 2
  iio:st_sensors: align on storagebits boundaries
  staging:iio:lis3l02dq drop separate driver
  iio: accel: st_accel: Add lis3l02dq support
  iio: adc: add missing of_node references to iio_dev
  iio: adc: ti-ads1015: add indio_dev->dev.of_node reference
  iio: potentiometer: Fix typo in Kconfig
  iio: potentiometer: mcp4531: Add device tree binding
  iio: potentiometer: mcp4531: Add device tree binding documentation
  iio: potentiometer: mcp4531: Add support for MCP454x, MCP456x, MCP464x and MCP466x
  iio:imu:mpu6050: icm20608 initial support
  iio: adc: max1363: Add device tree binding
  ...
2016-07-24 16:55:23 -07:00
Linus Torvalds
9d0be76f52 Char/Misc driver patches for 4.8-rc1
Here is the big char/misc driver update for 4.8-rc1.
 
 Not a lot of stuff, but it's all over the place, full details are in the
 shortlog below.  All of these have been in linux-next with no reported
 issues for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big char/misc driver update for 4.8-rc1.

  Not a lot of stuff, but it's all over the place, full details are in
  the shortlog.  All of these have been in linux-next with no reported
  issues for a while"

* tag 'char-misc-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (49 commits)
  lkdtm: silence warnings about function declarations
  lkdtm: hide unused functions
  intel_th: pci: Add Kaby Lake PCH-H support
  intel_th: Fix a deadlock in modprobing
  dsp56k: prevent a harmless underflow
  chardev: add missing line break in pr_warn
  lkdtm: use struct arrays instead of enums
  lkdtm: move jprobe entry points to start of source
  lkdtm: reorganize module paramaters
  lkdtm: rename globals for clarity
  lkdtm: rename "count" to "crash_count"
  lkdtm: remove intentional off-by-one array access
  lkdtm: split remaining logic bug tests to separate file
  lkdtm: split heap corruption tests to separate file
  lkdtm: split memory permissions tests to separate file
  lkdtm: split usercopy tests to separate file
  lkdtm: drop "alloc_size" parameter
  lkdtm: add usercopy test for blocking kernel text
  extcon: adc-jack: add suspend/resume support
  extcon: add missing of_node_put after calling of_parse_phandle
  ...
2016-07-24 16:26:26 -07:00
Linus Torvalds
b403f23044 We've got ten patches this time, half of which are related to a plethora
of nasty outcomes when inodes are transitioned from the unlinked state
 to the free state. Small file systems are particularly vulnerable to these
 problems, and it can manifest as mainly hangs, but also file system
 corruption. The patches have been tested for literally many weeks, with a
 very gruelling test, so I have a high level of confidence.
 
 - Andreas Gruenbacher wrote a series of 5 patches for various lockups
   during the transition of inodes from unlinked to free. The main patch
   is titled "Fix gfs2_lookup_by_inum lock inversion" and the other 4 are
   support and cleanup patches related to that.
 - Ben Marzinski contributed 2 patches with regard to a recreatable
   problem when gfs2 tries to write a page to a file that is being
   truncated, resulting in a BUG() in gfs2_remove_from_journal.
   Note that Ben had to export vfs function __block_write_full_page to get
   this to work properly. It's been posted a long time and he talked to
   various VFS people about it, and nobody seemed to mind.
 - I contributed 3 patches. (1) The first one fixes a memory corruptor:
   a race in which one process can overwrite the gl_object pointer set by
   another process, causing kernel panic and other symptoms. (2) The second
   patch fixes another race that resulted in a false-positive BUG_ON. This
   occurred when resource group reservations were freed by one process
   while another process was trying to grab a new reservation in the same
   resource group. (3) The third patch fixes a problem with doing journal
   replay when the journals are not all the same size.
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Merge tag 'gfs2-4.7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 updates from Bob Peterson:
 "We've got ten patches this time, half of which are related to a
  plethora of nasty outcomes when inodes are transitioned from the
  unlinked state to the free state.  Small file systems are particularly
  vulnerable to these problems, and it can manifest as mainly hangs, but
  also file system corruption.  The patches have been tested for
  literally many weeks, with a very gruelling test, so I have a high
  level of confidence.

   - Andreas Gruenbacher wrote a series of five patches for various
     lockups during the transition of inodes from unlinked to free.

     The main patch is titled "Fix gfs2_lookup_by_inum lock inversion"
     and the other four are support and cleanup patches related to that.

   - Ben Marzinski contributed two patches with regard to a recreatable
     problem when gfs2 tries to write a page to a file that is being
     truncated, resulting in a BUG() in gfs2_remove_from_journal.

     Note that Ben had to export vfs function __block_write_full_page to
     get this to work properly.  It's been posted a long time and he
     talked to various VFS people about it, and nobody seemed to mind.

   - I contributed 3 patches:
       o The first one fixes a memory corruptor: a race in which one
         process can overwrite the gl_object pointer set by another
         process, causing kernel panic and other symptoms.
       o The second patch fixes another race that resulted in a
         false-positive BUG_ON.  This occurred when resource group
         reservations were freed by one process while another process
         was trying to grab a new reservation in the same resource
         group.
       o The third patch fixes a problem with doing journal replay when
         the journals are not all the same size"

* tag 'gfs2-4.7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  GFS2: Fix gfs2_replay_incr_blk for multiple journal sizes
  GFS2: Check rs_free with rd_rsspin protection
  gfs2: writeout truncated pages
  fs: export __block_write_full_page
  gfs2: Lock holder cleanup
  gfs2: Large-filesystem fix for 32-bit systems
  gfs2: Get rid of gfs2_ilookup
  gfs2: Fix gfs2_lookup_by_inum lock inversion
  gfs2: Initialize iopen glock holder for new inodes
  GFS2: don't set rgrp gl_object until it's inserted into rgrp tree
2016-07-24 16:07:52 -07:00
Mark Brown
56432b7324 Merge remote-tracking branch 'spi/topic/xilinx' into spi-next 2016-07-24 22:08:30 +01:00
Mark Brown
1cb2e84873 Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/sunxi', 'spi/topic/ti-qspi', 'spi/topic/topcliff-pch' and 'spi/topic/txx9' into spi-next 2016-07-24 22:08:27 +01:00
Mark Brown
9a4506b60d Merge remote-tracking branches 'spi/topic/pxa2xx', 'spi/topic/rockchip', 'spi/topic/s3c64xx', 'spi/topic/sh' and 'spi/topic/sh-msiof' into spi-next 2016-07-24 22:08:25 +01:00
Mark Brown
ac3e62b820 Merge remote-tracking branches 'spi/topic/octeon', 'spi/topic/omap2-mcspi', 'spi/topic/orion', 'spi/topic/pic32' and 'spi/topic/pic32-sqi' into spi-next 2016-07-24 22:08:22 +01:00
Mark Brown
e350817b7c Merge remote-tracking branches 'spi/topic/flash-dma', 'spi/topic/imx', 'spi/topic/loopback', 'spi/topic/maintainers' and 'spi/topic/mpc52xx-psc' into spi-next 2016-07-24 22:08:20 +01:00
Mark Brown
ea9972df79 Merge remote-tracking branches 'spi/topic/bfin-sport', 'spi/topic/bfin5xx', 'spi/topic/clps711x', 'spi/topic/doc' and 'spi/topic/dt' into spi-next 2016-07-24 22:08:18 +01:00
Mark Brown
421c65fdee Merge remote-tracking branches 'spi/fix/pax2xx' and 'spi/fix/rockchip' into spi-linus 2016-07-24 22:08:16 +01:00
Jan Glauber
63d49afefc spi: octeon: Split driver into Octeon specific and common parts
Separate driver probing from SPI transfer functions.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-24 21:54:29 +01:00
Jan Glauber
22cc1b6b35 spi: octeon: Move include file from arch/mips to drivers/spi
Move the register definitions to the drivers directory because they
are only used there.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-24 21:54:29 +01:00
Jan Glauber
ee423c5322 spi: octeon: Put register offsets into a struct
Instead of hard-coding the register offsets put them into a struct
and set them in the probe function.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-24 21:54:29 +01:00
Jan Glauber
b9e64763b6 spi: octeon: Store system clock freqency in struct octeon_spi
Storing the system clock frequency in struct octeon_spi avoids
calling the MIPS specific octeon_get_io_clock_rate() for every transfer.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
Tested-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-24 21:54:29 +01:00
Steven J. Hill
187fc9b374 spi: octeon: Convert driver to use readq()/writeq() functions
Remove all calls to cvmx_read_csr()/cvmx_write_csr() and use
the portable readq()/writeq() functions.

Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-24 21:54:29 +01:00
Nicholas Mc Guire
33d5097dbf spi: pic32-sqi: fixup wait_for_completion_timeout return handling
wait_for_completion_timeout returns unsigned long not int so the check for
<= 0 should be == 0 here, and the type unsigned long. The function return
is set to -ETIMEDOUT to reflect the actual problem.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-24 21:49:57 +01:00
Nicholas Mc Guire
57c2b0ddd1 spi: pic32: fixup wait_for_completion_timeout return handling
wait_for_completion_timeout returns unsigned long not int so the check for
<= 0 should be == 0 here.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-24 21:49:16 +01:00
Linus Torvalds
523d939ef9 Linux 4.7 2016-07-24 12:23:50 -07:00
David S. Miller
de0ba9a0d8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Just several instances of overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 00:53:32 -04:00
Linus Torvalds
68093c43f3 A fix for a long-standing bug in the incremental osdmap handling code
that caused misdirected requests, tagged for stable.
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Merge tag 'ceph-for-4.7-rc8' of git://github.com/ceph/ceph-client

Pull ceph fix from Ilya Dryomov:
 "A fix for a long-standing bug in the incremental osdmap handling code
  that caused misdirected requests, tagged for stable"

  The tag is signed with a brand new key - Sage is on vacation and I
  didn't anticipate this"

* tag 'ceph-for-4.7-rc8' of git://github.com/ceph/ceph-client:
  libceph: apply new_state before new_up_client on incrementals
2016-07-24 10:00:31 +09:00
Wolfram Sang
b4cdaf32ce Documentation: i2c: slave: give proper example for pm usage
pm_runtime_forbid was the wrong knob, this is the better one.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-23 22:04:20 +02:00
Wolfram Sang
38fa8afff0 Documentation: i2c: slave: describe buffer problems a bit better
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-07-23 22:00:58 +02:00
Andy Lutomirski
55920d31f1 x86/mm/cpa: Add missing comment in populate_pdg()
In commit:

  21cbc2822aa1 ("x86/mm/cpa: Unbreak populate_pgd(): stop trying to deallocate failed PUDs")

I intended to add this comment, but I failed at using git.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/242baf8612394f4e31216f96d13c4d2e9b90d1b7.1469293159.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-23 21:17:10 +02:00
Andy Lutomirski
530dd8d4b9 x86/mm/cpa: Fix populate_pgd(): Stop trying to deallocate failed PUDs
Valdis Kletnieks bisected a boot failure back to this recent commit:

  360cb4d155 ("x86/mm/cpa: In populate_pgd(), don't set the PGD entry until it's populated")

I broke the case where a PUD table got allocated -- populate_pud()
would wander off a pgd_none entry and get lost.  I'm not sure how
this survived my testing.

Fix the original issue in a much simpler way.  The problem
was that, if we allocated a PUD table, failed to populate it, and
freed it, another CPU could potentially keep using the PGD entry we
installed (either by copying it via vmalloc_fault or by speculatively
caching it).  There's a straightforward fix: simply leave the
top-level entry in place if this happens.  This can't waste any
significant amount of memory -- there are at most 256 entries like
this systemwide and, as a practical matter, if we hit this failure
path repeatedly, we're likely to reuse the same page anyway.

For context, this is a reversion with this hunk added in:

	if (ret < 0) {
+		/*
+		 * Leave the PUD page in place in case some other CPU or thread
+		 * already found it, but remove any useless entries we just
+		 * added to it.
+		 */
-		unmap_pgd_range(cpa->pgd, addr,
+		unmap_pud_range(pgd_entry, addr,
			        addr + (cpa->numpages << PAGE_SHIFT));
		return ret;
	}

This effectively open-codes what the now-deleted unmap_pgd_range()
function used to do except that unmap_pgd_range() used to try to
free the page as well.

Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Mike Krinkin <krinkin.m.u@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Link: http://lkml.kernel.org/r/21cbc2822aa18aa812c0215f4231dbf5f65afa7f.1469249789.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-23 21:13:25 +02:00
Marc Zyngier
4c47eb1c18 arm64: KVM: VHE: Context switch MDSCR_EL1
The kprobe enablement work has uncovered that changes made by
a guest to MDSCR_EL1 were propagated to the host when VHE was
enabled, leading to unexpected exception being delivered.

Moving this register to the list of registers that are always
context-switched fixes the issue.

Fixes: 9c6c356832 ("arm64: KVM: VHE: Split save/restore of registers shared between guest and host")
Cc: stable@vger.kernel.org #4.6
Reported-by: Tirumalesh Chalamarla <Tirumalesh.Chalamarla@cavium.com>
Tested-by: Tirumalesh Chalamarla <Tirumalesh.Chalamarla@cavium.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-07-23 18:07:12 +02:00