freedesktop.org has adopted a formal&enforced code of conduct:

https://www.fooishbar.org/blog/fdo-contributor-covenant/
https://www.freedesktop.org/wiki/CodeOfConduct/

Besides formalizing things a bit more I don't think this changes
anything for us, we've already peer-enforced respectful and
constructive interactions since a long time. But it's good to document
things properly.

v2: Drop confusing note from commit message and clarify the grammer
(Chris, Alex and others).

Cc: Daniel Stone <daniels@collabora.com>
Cc: Keith Packard <keithp@keithp.com>
Cc: tfheen@err.no
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Reviewed-by: NSumit Semwal <sumit.semwal@linaro.org>
Acked-by: NArchit Taneja <architt@codeaurora.org>
Reviewed-by: NMartin Peres <martin.peres@free.fr>
Acked-by: NThierry Reding <treding@nvidia.com>
Acked-by: NJani Nikula <jani.nikula@intel.com>
Acked-by: NVincent Abriou <vincent.abriou@st.com>
Acked-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: NBrian Starkey <brian.starkey@arm.com>
Acked-by: NRob Clark <robdclark@gmail.com>
Reviewed-by: NDavid Herrmann <dh.herrmann@gmail.com>
Acked-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NHarry Wentland <harry.wentland@amd.com>
Reviewed-by: NEric Anholt <eric@anholt.net>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Acked-by: NGustavo Padovan <gustavo.padovan@collabora.com>
Acked-by: NMichel Dänzer <michel.daenzer@amd.com>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NSumit Semwal <sumit.semwal@linaro.org>
Acked-by: NKeith Packard <keithp@keithp.com>
Acked-by: NGabriel Krisman Bertazi <krisman@collabora.co.uk>
Acked-by: NAdam Jackson <ajax@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Adding a brief overview of hugetlbfs reservation design and
implementation as an aid to those making code modifications in this
area.

Link: http://lkml.kernel.org/r/1491586995-13085-1-git-send-email-mike.kravetz@oracle.comSigned-off-by: NMike Kravetz <mike.kravetz@oracle.com>
Acked-by: NHillf Danton <hillf.zj@alibaba-inc.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Cgroups currently don't report how much shmem they use, which can be
useful data to have, in particular since shmem is included in the
cache/file item while being reclaimed like anonymous memory.

Add a counter to track shmem pages during charging and uncharging.

Link: http://lkml.kernel.org/r/20170221164343.32252-1-hannes@cmpxchg.orgSigned-off-by: NJohannes Weiner <hannes@cmpxchg.org>
Reported-by: NChris Down <cdown@fb.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Show MADV_FREE pages info of each vma in smaps.  The interface is for
diganose or monitoring purpose, userspace could use it to understand
what happens in the application.  Since userspace could dirty MADV_FREE
pages without notice from kernel, this interface is the only place we
can get accurate accounting info about MADV_FREE pages.

[mhocko@kernel.org: update Documentation/filesystems/proc.txt]
Link: http://lkml.kernel.org/r/89efde633559de1ec07444f2ef0f4963a97a2ce8.1487965799.git.shli@fb.comSigned-off-by: NShaohua Li <shli@fb.com>
Acked-by: NJohannes Weiner <hannes@cmpxchg.org>
Acked-by: NMinchan Kim <minchan@kernel.org>
Acked-by: NMichal Hocko <mhocko@suse.com>
Acked-by: NHillf Danton <hillf.zj@alibaba-inc.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Figure 1 is full of whitespaces; fix it
Signed-off-by: NLiam Beguin <lbeguin@tycoint.com>
Signed-off-by: NSylvain Lemieux <slemieux@tycoint.com>
Acked-by: NIvan Vecera <ivecera@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The AVR32 architecture support has been removed from the Linux kernel,
hence remove all references to it from Documentation.
Signed-off-by: NHans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: NHåvard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: NNicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: NAndy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: NBoris Brezillon <boris.brezillon@free-electrons.com>

This commit gets rid of some minor errors in Documentation/:
* cputopology.txt: drawes -> drawers
* debugging-via-ohci1394.txt: remove an unnecessary line break
* static-keys: statemnts -> statements
* zorro.txt: busses -> buses
Signed-off-by: NStan Drozd <drozdziak1@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

This commit fixes a repeated "the" in vfio-mediated-device.txt and reflows the
paragraph.
Signed-off-by: NStan Drozd <drozdziak1@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

This commit fixes a misspelled header name in the ioctl numbers list
Signed-off-by: NStan Drozd <drozdziak1@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

AXP803 have the most regulators in currently supported AXP PMICs.

Add info for the regulators in the dt-bindings document.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

AXP803 is a PMIC produced by Shenzhen X-Powers, with either I2C or RSB
bus.

Add a compatible for it.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
Acked-by: NChen-Yu Tsai <wens@csie.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

In the binding documentation of AXP20X mfd, the compatible strings used
to be listed for three per line, which leads to some mess when trying to
add AXP803 compatible string (as we have already AXP806 and AXP809
compatibles, which is after AXP803 in ascending order).

Make the compatible strings one per line, so that inserting a new
compatible string will be directly a new line.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.io>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Exynos LPASS requires some clocks to be enabled to make any access to its
registers. This patch adds code for handling such clocks. For current set
of registers it is enough to keep sfr0_ctrl clock enabled. Till now it
worked only because those clocks were enabled by bootloader and driver
probe() happened before they were disabled by clock core because of lack
of users. Handling those clocks is also needed to make it possible to
enable support for audio power domain.

This patch requires adding sfr0_ctrl clock to device tree.
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: NKrzysztof Kozlowski <krzk@kernel.org>
Acked-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-for-MFD-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Pad retention should be controlled from pin control driver, so remove it
from Exynos LPASS driver. After this change, no more access to PMU regmap
is needed, so remove also the code for handling PMU regmap.
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Acked-by: NKrzysztof Kozlowski <krzk@kernel.org>
Acked-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-for-MFD-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch removes the sun4i touchscreen controller binding
documentation since it has been merged with the sun4i GPADC binding
documentation.
Signed-off-by: NQuentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch adds documentation for the A33 GPADC binding.
Signed-off-by: NQuentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Extend existing DA9062 binding information to include the DA9061 PMIC for
MFD core and regulators.

Add a da9062-onkey link to the existing onkey binding file.

Add a da9062-thermal link to the new temperature monitoring binding file.

Delete the da9062-watchdog section and replace it with a link to the new
DA9061/62 binding information file.
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSteve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch adds description for LED as the sub-module on MT6397/MT6323
multifunction device.
Signed-off-by: NSean Wang <sean.wang@mediatek.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch adds documentation for the Altera A10-SR Reset
Controller DT bindings.
Signed-off-by: NThor Thayer <thor.thayer@linux.intel.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This patch describes overall binding for TI LMU MFD devices.
Signed-off-by: NMilo Kim <milo.kim@ti.com>
Acked-by: NRob Herring <robh+dt@kernel.org>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

commit b101829a029a ("mfd: axp20x: Fix AXP806 access errors on cold boot")
was intended to fix the case where a board uses an AXP806 in slave mode,
but the boot loader leaves it in master mode for lack of AXP806 support.
But now the driver breaks on boards where the PMIC is operating in master
mode. To let the device tree describe which mode of operation is needed,
this patch introduces a new property "xpowers,master-mode".

Fixes: 204ae296 ("mfd: axp20x: Add bindings for AXP806 PMIC")
Signed-off-by: NRask Ingemann Lambertsen <rask@formelder.dk>
Acked-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The described GPIO reset property is applicable to *all* child PHYs. If
we have one reset line per PHY present on the MDIO bus, these
automatically become properties of the child PHY nodes.

Finally, indicate how the RESET pulse width must be defined, which is
the maximum value of all individual PHYs RESET pulse widths determined
by reading their datasheets.

Fixes: 69226896 ("mdio_bus: Issue GPIO RESET to PHYs.")
Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com>
Reviewed-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds documentation of device tree bindings for the
STM32 SAI ASoC driver.
Signed-off-by: Nolivier moysan <olivier.moysan@st.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Add driver for NAU88L24.
Signed-off-by: NJohn Hsu <KCHSU0@nuvoton.com>
Signed-off-by: NJohn Hsu <supercraig0719@gmail.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

This patch implements consideration of the SPI_READY mode flag as
defined in spi.h. It extends the device tree bindings to support
the values defined by the reference manual for the DRCTL field.

Thus supporting edge-triggered and level-triggered bursts.
Signed-off-by: NLeif Middelschulte <Leif.Middelschulte@gmail.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Signed-off-by: NOlimpiu Dejeu <olimpiu@arcticsand.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NDaniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Add description of uinput module with a few examples.
Signed-off-by: NMarcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Marvell Xenon SDHC can support eMMC/SD/SDIO.
Add Xenon-specific properties.
Also add properties for Xenon PHY setting.
Signed-off-by: NHu Ziji <huziji@marvell.com>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add description of Cavium Octeon and ThunderX SOC device tree bindings.

CC: Ulf Hansson <ulf.hansson@linaro.org>
CC: Rob Herring <robh+dt@kernel.org>
CC: Mark Rutland <mark.rutland@arm.com>
CC: devicetree@vger.kernel.org
Signed-off-by: NJan Glauber <jglauber@cavium.com>
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Signed-off-by: NSteven J. Hill <steven.hill@cavium.com>
Acked-by: NRob Herring <robh+dt@kernel.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add helper functions to enable or disable the Command Queue.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Adds the device tree bindings description for Samsung S3C24XX
MMC/SD/SDIO controller, used as a connectivity interface with external
MMC, SD and SDIO storage mediums.
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSergio Prado <sergio.prado@e-labworks.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

DTS properties are used instead of fixed data
because PHY settings can be different for different chips/boards.
Add description of new DLL PHY delays.
Signed-off-by: NPiotr Sroka <piotrs@cadence.com>
Reviewed-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Add description for mediatek,hs200-cmd-int-delay
Add description for mediatek,hs400-cmd-int-delay
Add description for mediatek,hs400-cmd-resp-sel-rising
Signed-off-by: NYong Mao <yong.mao@mediatek.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Signed-off-by: NChris Brandt <chris.brandt@renesas.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: NSimon Horman <horms+renesas@verge.net.au>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

This is the other SD controller on the platform, which can be swapped
to the role of SD card host using pin muxing.
Signed-off-by: NEric Anholt <eric@anholt.net>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The SDHCI controller found on Tegra186 in very similar to the controller
found on earlier generations of Tegra.
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

The list of compatible strings is somewhat difficult to read and extend.
Reformat it into a list to make it more easily extensible.

While at it, also remove the "plus one of the above" clause because it
isn't actually valid.
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>

Middlebox firewall issues can potentially cause server's data being
blackholed after a successful 3WHS using TFO. Following are the related
reports from Apple:
https://www.nanog.org/sites/default/files/Paasch_Network_Support.pdf
Slide 31 identifies an issue where the client ACK to the server's data
sent during a TFO'd handshake is dropped.
C ---> syn-data ---> S
C <--- syn/ack ----- S
C (accept & write)
C <---- data ------- S
C ----- ACK -> X     S
		[retry and timeout]

https://www.ietf.org/proceedings/94/slides/slides-94-tcpm-13.pdf
Slide 5 shows a similar situation that the server's data gets dropped
after 3WHS.
C ---- syn-data ---> S
C <--- syn/ack ----- S
C ---- ack --------> S
S (accept & write)
C?  X <- data ------ S
		[retry and timeout]

This is the worst failure b/c the client can not detect such behavior to
mitigate the situation (such as disabling TFO). Failing to proceed, the
application (e.g., SSL library) may simply timeout and retry with TFO
again, and the process repeats indefinitely.

The proposed solution is to disable active TFO globally under the
following circumstances:
1. client side TFO socket detects out of order FIN
2. client side TFO socket receives out of order RST

We disable active side TFO globally for 1hr at first. Then if it
happens again, we disable it for 2h, then 4h, 8h, ...
And we reset the timeout to 1hr if a client side TFO sockets not opened
on loopback has successfully received data segs from server.
And we examine this condition during close().

The rational behind it is that when such firewall issue happens,
application running on the client should eventually close the socket as
it is not able to get the data it is expecting. Or application running
on the server should close the socket as it is not able to receive any
response from client.
In both cases, out of order FIN or RST will get received on the client
given that the firewall will not block them as no data are in those
frames.
And we want to disable active TFO globally as it helps if the middle box
is very close to the client and most of the connections are likely to
fail.

Also, add a debug sysctl:
  tcp_fastopen_blackhole_detect_timeout_sec:
    the initial timeout to use when firewall blackhole issue happens.
    This can be set and read.
    When setting it to 0, it means to disable the active disable logic.
Signed-off-by: NWei Wang <weiwan@google.com>
Acked-by: NYuchung Cheng <ycheng@google.com>
Acked-by: NNeal Cardwell <ncardwell@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some boards [1] leave the PHYs at an invalid state
during system power-up or reset thus causing unreliability
issues with the PHY which manifests as PHY not being detected
or link not functional. To fix this, these PHYs need to be RESET
via a GPIO connected to the PHY's RESET pin.

Some boards have a single GPIO controlling the PHY RESET pin of all
PHYs on the bus whereas some others have separate GPIOs controlling
individual PHY RESETs.

In both cases, the RESET de-assertion cannot be done in the PHY driver
as the PHY will not probe till its reset is de-asserted.
So do the RESET de-assertion in the MDIO bus driver.

[1] - am572x-idk, am571x-idk, a437x-idk
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

trivial fix to spelling mistake in documentation
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NNicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>