inode_nohighmem() is sufficient to make sure that page_get_link()
won't try to allocate a highmem page.  Moreover, it is sufficient
to make sure that page_symlink/__page_symlink won't do the same
thing.  However, any filesystem that manually preseeds the symlink's
page cache upon symlink(2) needs to make sure that the page it
inserts there won't be a highmem one.

Fortunately, only nfs and shmem have run afoul of that...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Specify the device tree binding for the input clocks to Arizona devices.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The mfd/s2mpa01.txt duplicates some of the information about bindings
with old mfd/s2mps11.txt. Now common part exists entirely in
mfd/samsung,sec-core.txt so:
 - add company prefix to file name (regulator/samsung,s2mpa01.txt),
 - remove duplicated information,
 - reorganize the contents to match style of
   regulator/samsung,s2mps11.txt.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: NMark Brown <broonie@kernel.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The regulator/s5m8767-regulator.txt duplicates some of the information
about bindings with old mfd/s2mps11.txt. Now common part exists entirely
in mfd/samsung,sec-core.txt so:
 - add company prefix to file name (regulator/samsung,s5m8767.txt),
 - remove duplicated information,
 - reorganize the contents to match style of
   regulator/samsung,s2mps11.txt.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: NMark Brown <broonie@kernel.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Bindings for Samsung S2M and S5M family PMICs are in mess. They are
spread over different files and subdirectories in a non-consistent way.
The devices and respective drivers for them share a lot in common so
everything could be organized in a more readable way.

Reorganize the S2MPS11/13/14/15 Device Tree bindings to match the
drivers for this family of devices:
 - move mfd/s2mps11.txt to mfd/samsung,sec-core.txt for the main MFD
   driver (common for entire family),
 - split clock block to clock/samsung,s2mps11.txt,
 - split regulator block to regulator/samsung,s2mps11.txt.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: NMichael Turquette <mturquette@baylibre.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

cgroup-legacy may be too loaded.  Rename the docs so that they're
postfixed with v1 and v2.

* s/cgroup-legacy/cgroup-v1/
* s/cgroup.txt/cgroup-v2.txt/
Signed-off-by: NTejun Heo <tj@kernel.org>

This patch adds last time that user requested filesystem operations.
This information is used to detect whether system is idle or not later.
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>

There are a few discussions left with regards to this ioctl:

1) the name of the new structs will contain _v2_ on it?
2) what's the best alternative to avoid compat32 issues?

Due to that, let's postpone the addition of this new ioctl to
the next Kernel version, to give people more time to discuss it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Add description for this new media controller ioctl.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Document the media controller interfaces at the media
uAPI docbook.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

There were some changes on the media types that were not reflected
on the types tables. Update them to reflect the upstream changes.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

As MEDIA_IOC_G_TOPOLOGY shares the data types already declared
for entities, pads and links, we should move those to a separate
part of the document, and use cross-references where needed.

So, move the following tables to a separate section at the
DocBook:
	media-entity-type
	media-entity-flag
	media-pad-flag
	media-link-flag
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

The Media Controller next generation patches added a new graph
element type: interfaces. It also allows links between interfaces
and entities. Update the docbook to reflect that.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Instead of using a text file, let's put it together with the
struct documentation for the Media Controller.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Both revision and group_id fields were never used and were always
initialized to zero. Remove them.
Suggested-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

With the MC next gen rework, what's left for media_entity_init()
is to just initialize the PADs. However, certain devices, like
a FLASH led/light doesn't have any input or output PAD.

So, there's no reason why calling media_entity_init() would be
mandatory. Also, despite its name, what this function actually
does is to initialize the PADs data. So, rename it to
media_entity_pads_init() in order to reflect that.

The media entity actual init happens during entity register,
at media_device_register_entity(). We should move init of
num_links and num_backlinks to it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Due to the rename, the documentation became outdated.

Update it to reflect what's there at media.h.
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Entities should have one or more functions. Calling it as a
type proofed to not be correct, as an entity could eventually
have more than one type.

So, rename the field as function.

Please notice that this patch doesn't extend support for
multiple function entities. Such change will happen when
we have real case drivers using it.

No functional changes.
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Cleanup the media controller entities description:
- remove MEDIA_ENT_T_DEVNODE and MEDIA_ENT_T_V4L2_SUBDEV entity
  types, as they don't mean anything;
- add MEDIA_ENT_T_UNKNOWN with a proper description;
- remove ALSA and FB entity types. Those should not be used, as
  the types are deprecated. We'll soon be adidng ALSA, but with
  a different entity namespace;
- improve the description of some entities.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Now that interfaces and entities are distinct, it makes no sense
of keeping something named as MEDIA_ENT_T_DEVNODE_DVB_foo.

Made via this script:
	for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DEVNODE_DVB_,MEDIA_ENT_T_DVB_, <$i >a && mv a $i; done
	for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DVB_DVR,MEDIA_ENT_T_DVB_TSOUT, <$i >a && mv a $i; done
	for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DVB_FE,MEDIA_ENT_T_DVB_DEMOD, <$i >a && mv a $i; done
	for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DVB_NET,MEDIA_ENT_T_DVB_DEMOD_NET_DECAP, <$i >a && mv a $i; done
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Now that interfaces and entities are distinct, it makes no sense
of keeping something named as MEDIA_ENT_T_DEVNODE.

This change was done with this script:

	for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DEVNODE_V4L,MEDIA_ENT_T_V4L2_VIDEO, <$i >a && mv a $i; done
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

With the new API, a link can be either between two PADs or between an interface
and an entity. So, we need to use a better name for the function that create
links between two pads.

So, rename the such function to media_create_pad_link().

No functional changes.

This patch was created via this shell script:
	for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f) $(find include/ -name '*.h' -type f) ; do sed s,media_entity_create_link,media_create_pad_link,g <$i >a && mv a $i; done
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Tested-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Currently, media_entity_init() creates an array with the links,
allocated at init time. It provides a parameter (extra_links)
that would allocate more links than the current needs, but this
is not used by any driver.

As we want to be able to do dynamic link allocation/removal,
we'll need to change the implementation of the links. So,
before doing that, let's first remove that extra unused
parameter, in order to cleanup the interface first.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Update the device tree binding documentation to include the wlf,out-mono
property that is used to specify whether each output is a mono or stereo
output.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Currently syscon has a fixed configuration of 32 bits for register and
values widths. In some cases, it would be desirable to be able to
customize the value width.

For example, certain boards (like the ones manufactured by Technologic
Systems) have a FPGA that is memory-mapped, but its registers are only
16-bit wide.

This patch adds an optional "reg-io-width" DT binding for syscon that
allows to change the width for the data bus (i.e. val_bits). If this
property is provided, it will also set the register stride to
reg-io-width's value. If not provided, the default configuration is
used.
Signed-off-by: NDamien Riegel <damien.riegel@savoirfairelinux.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Signed-off-by: NElad Raz <eladr@mellanox.com>
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This brings SECCOMP_MODE_STRICT and SECCOMP_MODE_FILTER support through
prctl(2) and seccomp(2) to User-mode Linux for i386 and x86_64
subarchitectures.

secure_computing() is called first in handle_syscall() so that the
syscall emulation will be aborted quickly if matching a seccomp rule.

This is inspired from Meredydd Luff's patch
(https://gerrit.chromium.org/gerrit/21425).
Signed-off-by: NMickaël Salaün <mic@digikod.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Will Drewry <wad@chromium.org>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Meredydd Luff <meredydd@senatehouse.org>
Cc: David Drysdale <drysdale@google.com>
Signed-off-by: NRichard Weinberger <richard@nod.at>
Acked-by: NKees Cook <keescook@chromium.org>

Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

EEPROMs can have additional properties, so they are not suitable for
trivial-devices.txt. Move most bindings to the designated eeprom.txt.
Add the missing "atmel,24c08" while doing that. Note that the remaining
ones in trivial-devices need to be dealt with separately because of
improper manufacturer names.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Signed-off-by: NAkshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Signed-off-by: NSven Eckelmann <sven@narfation.org>
Signed-off-by: NMarek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: NAntonio Quartulli <a@unstable.cc>

Add NP4 macb SoC variant.
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NBiao Huang <biao.huang@mediatek.com>
Acked-by: NRob Herring <robh@kernel.org>
Reviewed-by: NMathias Brugger <matthias.bgg@gmail.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Instead of defining a new field in the uart_amba_port structure, use the
existing iotype field of the uart_port structure, which is intended for
this purpose.  If we need to use 32-bit register access, we set iotype
to UPIO_MEM32, otherwise we set it to UPIO_MEM.

For early console, specify the "mmio32" option on the kernel command-line.
Example:

        earlycon=pl011,mmio32,0x3ced1000
Signed-off-by: NTimur Tabi <timur@codeaurora.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Add DT bindings for NAND devices connected to the NEMC on JZ4780 SoCs,
as well as the hardware BCH controller, used by the jz4780_{nand,bch}
drivers.
Signed-off-by: NAlex Smith <alex.smith@imgtec.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: NHarvey Hunt <harvey.hunt@imgtec.com>
Acked-by: NRob Herring <robh@kernel.org>
Reviewed-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>

This allow to directly print block_device name.
Currently one should use bdevname() with temporal char buffer.
This is very ineffective because bloat stack usage for deep IO call-traces

Example:
	%pg  ->    sda, sda1 or loop0p1

[AV: fixed a minor braino - position updates should not be dependent
upon having reached the of buffer]
Signed-off-by: NDmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Signed-off-by: NYuan Sun <sunyuan3@huawei.com>
Signed-off-by: NTejun Heo <tj@kernel.org>

Property names do not match real names needed by driver itself.
This patch fix this problem.
Signed-off-by: NPali Rohár <pali.rohar@gmail.com>
Acked-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NRob Herring <robh@kernel.org>

Fix bogus indentation of the PSCI compatible values, reformat.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: NMark Rutland <mark.rutland@arm.com>
Signed-off-by: NRob Herring <robh@kernel.org>

This is an attempt to make documentation more user friendly.
Signed-off-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: NDoug Smythies <dsmythies@telus.net>
Reviewed-by: NChen, Yu C <yu.c.chen@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>