Commit Graph

41626 Commits

Author SHA1 Message Date
Jan Kundrát
8031358635 serial: max310x: Use level-triggered interrupts
I was getting this trace along with a disabled IRQ when I was generating
heavy traffic over four daisy-chained UARTs (MAX14830) on my test kit
(Marvell Armada AM388, Solidrun Clearfog Base):

    irq 51: nobody cared (try booting with the "irqpoll" option)
    CPU: 0 PID: 68 Comm: irq/51-spi1.2 Not tainted 4.14.4 #7
    Hardware name: Marvell Armada 380/385 (Device Tree)
    [<c0110ba4>] (unwind_backtrace) from [<c010c1d8>] (show_stack+0x10/0x14)
    [<c010c1d8>] (show_stack) from [<c07776ac>] (dump_stack+0x84/0x98)
    [<c07776ac>] (dump_stack) from [<c016bdfc>] (__report_bad_irq+0x28/0xcc)
    [<c016bdfc>] (__report_bad_irq) from [<c016c204>] (note_interrupt+0x28c/0x2dc)
    [<c016c204>] (note_interrupt) from [<c01695d4>] (handle_irq_event_percpu+0x4c/0x58)
    [<c01695d4>] (handle_irq_event_percpu) from [<c0169624>] (handle_irq_event+0x44/0x68)
    [<c0169624>] (handle_irq_event) from [<c016ce80>] (handle_edge_irq+0x12c/0x1dc)
    [<c016ce80>] (handle_edge_irq) from [<c016872c>] (generic_handle_irq+0x24/0x34)
    [<c016872c>] (generic_handle_irq) from [<c03fc5a0>] (mvebu_gpio_irq_handler+0xe0/0x184)
    [<c03fc5a0>] (mvebu_gpio_irq_handler) from [<c016872c>] (generic_handle_irq+0x24/0x34)
    [<c016872c>] (generic_handle_irq) from [<c0168c4c>] (__handle_domain_irq+0x5c/0xb4)
    [<c0168c4c>] (__handle_domain_irq) from [<c0101520>] (gic_handle_irq+0x4c/0x90)
    [<c0101520>] (gic_handle_irq) from [<c010ce4c>] (__irq_svc+0x6c/0x90)
    Exception stack(0xeea77c30 to 0xeea77c78)
    7c20:                                     0000000a 018cba80 0000000a f098f680
    7c40: 0000020a f098f680 00000008 0000020a 018cba80 00000001 ee9302a0 eea76000
    7c60: ef2b2640 eea77c80 c050687c c0506894 80070013 ffffffff
    [<c010ce4c>] (__irq_svc) from [<c0506894>] (orion_spi_setup_transfer+0x118/0x20c)
    [<c0506894>] (orion_spi_setup_transfer) from [<c05069ac>] (orion_spi_transfer_one+0x1c/0x26c)
    [<c05069ac>] (orion_spi_transfer_one) from [<c05060e4>] (spi_transfer_one_message+0xec/0x500)
    [<c05060e4>] (spi_transfer_one_message) from [<c05059a4>] (__spi_pump_messages+0x3f4/0x680)
    [<c05059a4>] (__spi_pump_messages) from [<c0505e38>] (__spi_sync+0x1fc/0x200)
    [<c0505e38>] (__spi_sync) from [<c0505e60>] (spi_sync+0x24/0x3c)
    [<c0505e60>] (spi_sync) from [<c0505f48>] (spi_write_then_read+0xd0/0x17c)
    [<c0505f48>] (spi_write_then_read) from [<c0482efc>] (_regmap_raw_read+0xb0/0x250)
    [<c0482efc>] (_regmap_raw_read) from [<c04830c0>] (_regmap_bus_read+0x24/0x4c)
    [<c04830c0>] (_regmap_bus_read) from [<c04826f4>] (_regmap_read+0x60/0x148)
    [<c04826f4>] (_regmap_read) from [<c0482818>] (regmap_read+0x3c/0x5c)
    [<c0482818>] (regmap_read) from [<c04592b4>] (max310x_port_irq+0x104/0x2dc)
    [<c04592b4>] (max310x_port_irq) from [<c0459a40>] (max310x_ist+0x68/0xc0)
    [<c0459a40>] (max310x_ist) from [<c016a610>] (irq_thread_fn+0x1c/0x54)
    [<c016a610>] (irq_thread_fn) from [<c016a8d8>] (irq_thread+0x12c/0x1f0)
    [<c016a8d8>] (irq_thread) from [<c013e560>] (kthread+0x128/0x158)
    [<c013e560>] (kthread) from [<c0107a50>] (ret_from_fork+0x14/0x24)
    handlers:
    [<c0169694>] irq_default_primary_handler threaded [<c04599d8>] max310x_ist
    Disabling IRQ #51

On a multi-UART max310x, each UART has its own interrupt status register
which automatically de-asserts the IRQ line upon read. (There are also
top-level IRQ indicator registers which are not clear-on-read, but they
are not relevant here.) It was quite possible to receive a pending IRQ
for, e.g., UART0, enter the threaded IRQ handler, clear the ISR for
UART0 which de-asserts the IRQ line, and then race with another event on
the same chip, but a different UART channel. That resulted in another
edge on the shared-within-the-chip IRQ line which got intercepted by the
kernel.

That all led to an edge-level interrupt which was not being handled by
anybody because our threaded handler hasn't finished yet. As the chip
actually uses *level* triggered IRQs, let's convert the example DT
bindings to these.

Signed-off-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 09:59:01 +01:00
Peter Ujfalusi
32fdb62423 dt-bindings: display/ti: Add optional property to set memory bandwidth limit
max-memory-bandwidth can be used to specify the maximum bandwidth dispc
can use when reading display data from main memory.

In some SoC (am437x for example) we have memory bandwidth limitation
which causes underflow in the display subsystem.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-12-19 10:32:00 +02:00
H. Nikolaus Schaller
c1b9d4c75c omapdrm: panel: fix compatible vendor string for td028ttec1
The vendor name was "toppoly" but other panels and the vendor list
have defined it as "tpo". So let's fix it in driver and bindings.

We keep the old definition in parallel to stay compatible with
potential older DTB setup.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2017-12-19 10:32:00 +02:00
Uwe Kleine-König
bbecb07fa0 siox: new driver framework for eckelmann SIOX
SIOX is a bus system invented at Eckelmann AG to control their building
management and refrigeration systems. Traditionally the bus was
implemented on custom microcontrollers, today Linux based machines are
in use, too.

The topology on a SIOX bus looks as follows:

      ,------->--DCLK-->---------------+----------------------.
      ^                                v                      v
 ,--------.                ,----------------------.       ,------
 |        |                |   ,--------------.   |       |
 |        |--->--DOUT-->---|->-|shift register|->-|--->---|
 |        |                |   `--------------'   |       |
 | master |                |        device        |       |  device
 |        |                |   ,--------------.   |       |
 |        |---<--DIN---<---|-<-|shift register|-<-|---<---|
 |        |                |   `--------------'   |       |
 `--------'                `----------------------'       `------
      v                                ^                      ^
      `----------DLD-------------------+----------------------'

There are two control lines (DCLK and DLD) driven from the bus master to
all devices in parallel and two daisy chained data lines, one for input
and one for output. DCLK is the clock to shift both chains by a single
bit. On an edge of DLD the devices latch both their input and output
shift registers.

This patch adds a framework for this bus type.

Acked-by: Gavin Schenk <g.schenk@eckelmann.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-19 09:26:00 +01:00
Bjorn Helgaas
ffd2e8df8d resource: Set type of "reserve=" user-specified resources
When we reserve regions because the user specified a "reserve=" parameter,
set the resource type to either IORESOURCE_IO (for regions below 0x10000)
or IORESOURCE_MEM.  The test for 0x10000 is just a heuristic; obviously
there can be memory below 0x10000 as well.

Improve documentation of the "reserve=" parameter.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-12-18 23:07:46 -06:00
Linus Torvalds
ace52288ed Merge tag 'for-linus-20171218' of git://git.infradead.org/linux-mtd
Pull MTD fixes from Richard Weinberger:
 "This contains the following regression fixes:

   - fix bitflip handling in brcmnand and gpmi nand drivers

   - revert a bad device tree binding for spi-nor

   - fix a copy&paste error in gpio-nand driver

   - fix a too strict length check in mtd core"

* tag 'for-linus-20171218' of git://git.infradead.org/linux-mtd:
  mtd: Fix mtd_check_oob_ops()
  mtd: nand: gpio: Fix ALE gpio configuration
  mtd: nand: brcmnand: Zero bitflip is not an error
  mtd: nand: gpmi: Fix failure when a erased page has a bitflip at BBM
  Revert "dt-bindings: mtd: add sst25wf040b and en25s64 to sip-nor list"
2017-12-18 16:18:01 -08:00
Sean Young
dde7edff35 media: lirc: when transmitting scancodes, block until transmit is done
The semantics for lirc IR transmit with raw IR is that the write call
should block until the IR is transmitted. Some drivers have no idea
when this actually is (e.g. mceusb), so there is a wait.

This is useful for userspace, as it might want to send a IR button press,
a gap of a predefined number of milliseconds, and then send a repeat
message.

It turns out that for transmitting scancodes this feature is even more
useful, as user space has no idea how long the IR is. So, maintain
the existing semantics for IR scancode transmit.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-18 15:19:57 -05:00
Mauro Carvalho Chehab
4839c58f03 media: v4l2-dev: convert VFL_TYPE_* into an enum
Using enums makes easier to document, as it can use kernel-doc
markups. It also allows cross-referencing, with increases the
kAPI readability.

Please notice that now cx88_querycap() has to have a default for
the VFL type, as there are more types than supported by the driver.

Acked-By: Mike Isely <isely@pobox.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-18 11:49:40 -05:00
Mauro Carvalho Chehab
66f1e6078e media: v4l2-event.rst: improve events description
Both v4l2-event.rst and v4l2-event.h have an overview of
events, but there are some inconsistencies there:

- at v4l2-event, the event's ring buffer is called kevent. Its
  name is, instead, v4l2_kevent;

- Some things are mentioned on both places (with different words),
  others are either on one of the files.

In order to cleanup this mess, put everything at v4l2-event.rst
and improve it to be a little more coherent and to have cross
references.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-18 10:35:46 -05:00
Mauro Carvalho Chehab
cccd6fa435 media: rc-core.rst: add an introduction for RC core
The RC core does several assumptions, but those aren't documented
anywhere, with could make harder for ones that want to understand
what's there.

So, add an introduction explaining the basic concepts of RC and
how they're related to the RC core implementation.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-18 10:15:29 -05:00
Geert Uytterhoeven
f8d3bc1004 eeprom: at25: Add DT support for EEPROMs with odd address bits
Certain EEPROMS have a size that is larger than the number of address
bytes would allow, and store the MSB of the address in bit 3 of the
instruction byte.

This can be described in platform data using EE_INSTR_BIT3_IS_ADDR, or
in DT using the obsolete legacy "at25,addr-mode" property.
But currently there exists no non-deprecated way to describe this in DT.

Hence extend the existing "address-width" DT property to allow
specifying 9 address bits, and enable support for that in the driver.

This has been tested with a Microchip 25LC040A.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-18 15:59:17 +01:00
Mimi Zohar
da1b0029f5 ima: support new "hash" and "dont_hash" policy actions
The builtin ima_appraise_tcb policy, which is specified on the boot
command line, can be replaced with a custom policy, normally early in
the boot process.  Custom policies can be more restrictive in some ways,
like requiring file signatures, but can be less restrictive in other
ways, like not appraising mutable files.  With a less restrictive policy
in place, files in the builtin policy might not be hashed and labeled
with a security.ima hash.  On reboot, files which should be labeled in
the ima_appraise_tcb are not labeled, possibly preventing the system
from booting properly.

To resolve this problem, this patch extends the existing IMA policy
actions "measure", "dont_measure", "appraise", "dont_appraise", and
"audit" with "hash" and "dont_hash".  The new "hash" action will write
the file hash as security.ima, but without requiring the file to be
appraised as well.

For example, the builtin ima_appraise_tcb policy includes the rule,
"appraise fowner=0".  Adding the "hash fowner=0" rule to a custom
policy, will cause the needed file hashes to be calculated and written
as security.ima xattrs.

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
2017-12-18 09:43:38 -05:00
Frederic Weisbecker
d94d105329 sched/isolation: Document boot parameters dependency on CONFIG_CPU_ISOLATION=y
The "isolcpus=" and "nohz_full=" boot parameters depend on CPU Isolation
support. Let's document that.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wanpeng Li <kernellwp@gmail.com>
Cc: kernel test robot <xiaolong.ye@intel.com>
Link: http://lkml.kernel.org/r/1513275507-29200-4-git-send-email-frederic@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-12-18 13:46:42 +01:00
Greg Kroah-Hartman
7f9d04bc56 Merge 4.15-rc4 into staging-next
We want the staging fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-18 09:12:51 +01:00
Greg Kroah-Hartman
d9e3d899bc Merge 4.15-rc4 into usb-next
We want the USB fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-18 09:08:05 +01:00
Ingo Molnar
1d2a7de8e9 Merge tag 'v4.15-rc4' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-12-18 06:26:07 +01:00
Dave Airlie
a942b3c2cd Merge tag 'drm-misc-next-2017-12-14' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for 4.16:

Cross-subsystem Changes:

 - Documentation for amlogic dt dt-bindings

Core Changes:

 - Update edid-derived drm_display_info fields at edid property set

Driver Changes:

 - A bunch of clean up from Noralf, including the last patches to reduce
 fbdev emulation footprint.

* tag 'drm-misc-next-2017-12-14' of git://anongit.freedesktop.org/drm/drm-misc: (30 commits)
  drm/atomic-helper: Make zpos property kerneldoc less misleading
  drm: Update edid-derived drm_display_info fields at edid property set [v2]
  MAINTAINERS: Remove Jani as drm-misc co-maintainer
  drm/tinydrm: Use drm_fb_cma_fbdev_init_with_funcs/fini()
  drm/arm/mali: Use drm_fb_cma_fbdev_init/fini()
  drm/zte: Use drm_fb_cma_fbdev_init/fini()
  drm/vc4: Use drm_fb_cma_fbdev_init/fini()
  drm/tve200: Use drm_fb_cma_fbdev_init/fini()
  drm/tilcdc: Use drm_fb_cma_fbdev_init/fini()
  drm/sun4i: Use drm_fb_cma_fbdev_init/fini()
  drm/stm: Use drm_fb_cma_fbdev_init/fini()
  drm/sti: Use drm_fb_cma_fbdev_init/fini()
  drm/pl111: Use drm_fb_cma_fbdev_init/fini()
  drm/imx: Use drm_fb_cma_fbdev_init/fini()
  drm/atmel-hlcdc: Use drm_fb_cma_fbdev_init/fini()
  drm/cma-helper: Add drm_fb_cma_fbdev_init/fini()
  drm/gem-fb-helper: drm_gem_fbdev_fb_create() make funcs optional
  drm/tegra: Use drm_fb_helper_lastclose() and _poll_changed()
  drm/rockchip: Use drm_fb_helper_lastclose() and _poll_changed()
  drm/omap: Use drm_fb_helper_lastclose() and _poll_changed()
  ...
2017-12-18 10:10:14 +10:00
Dave Gerlach
212b7287ae dt-bindings: opp: Introduce ti-opp-supply bindings
Document the devicetree bindings that describe Texas Instruments
opp-supply which allow a platform to describe multiple regulators and
additional information, such as registers containing data needed to
program aforementioned regulators.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-12-17 19:17:44 +01:00
Max Filippov
c633544a61 xtensa: add support for KASAN
Cover kernel addresses above 0x90000000 by the shadow map. Enable
HAVE_ARCH_KASAN when MMU is enabled. Provide kasan_early_init that fills
shadow map with writable copies of kasan_zero_page. Call
kasan_early_init right after mmu initialization in the setup_arch.
Provide kasan_init that allocates proper shadow map pages from the
memblock and puts these pages into the shadow map for addresses from
VMALLOC area to the end of KSEG. Call kasan_init right after memblock
initialization. Don't use KASAN for the boot code, MMU and KASAN
initialization and page fault handler. Make kernel stack size 4 times
larger when KASAN is enabled to avoid stack overflows.
GCC 7.3, 8 or newer is required to build the xtensa kernel with KASAN.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-12-16 22:37:12 -08:00
Max Filippov
1af1e8a39d xtensa: move fixmap and kmap just above the KSEG
The virtual address space between the page table and the VMALLOC region
is big enough to host KASAN shadow map and there's enough space between
the VMALLOC area and KSEG for the fixmap and kmap.
Move fixmap and kmap to the gap between VMALLOC area and KSEG, just
above the KSEG. Reorder entries in the kernel memory layout printing
code. Drop duplicate PGTABLE_START definition, use
XCHAL_PAGE_TABLE_VADDR instead.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-12-16 22:37:12 -08:00
Max Filippov
40d1a07b33 xtensa: enable stack protector
The implementation is adopted from the ARM arch. GCC 7.3, 8 or newer is
required for building the xtensa kernel with SSP.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2017-12-16 22:37:07 -08:00
David S. Miller
c30abd5e40 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Three sets of overlapping changes, two in the packet scheduler
and one in the meson-gxl PHY driver.

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-16 22:11:55 -05:00
Heiko Stuebner
c10e65b587 dt-bindings: gpu: mali-utgard: add rockchip,rk3328-mali compatible
The rk3328 quad-core Cortex A53 uses a Mali-450MP2 with 2 PPs, so
add a compatible for it.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Rob Herring <robh@kernel.org>
2017-12-16 18:15:20 +01:00
Gregory CLEMENT
7a62f48b27 dt-bindings: marvell: Add documentation for the North Bridge PM on Armada 37xx
Extend the documentation of the Armada 37xx SoC with the the North
Bridge Power Management component.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-12-16 17:11:42 +01:00
Andy Shevchenko
cce1fea50e thunderbolt: Make pathname to force_power shorter
WMI is the bus inside kernel, so, we may access the GUID via
/sys/bus/wmi instead of doing this through /sys/devices path.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mario Limonciello <mario.limonciello@dell.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-16 16:37:51 +01:00
Masahiro Yamada
033dba2ec0 kbuild: prepare to remove C files pre-generated by flex and bison
In Linux build system convention, pre-generated files are version-
controlled with a "_shipped" suffix.  During the kernel building,
they are simply shipped (copied) removing the suffix.

This approach can reduce external tool dependency for the kernel build,
but it is tedious to manually regenerate such artifacts from developers'
point of view.  (We need to do "make REGENERATE_PARSERS=1" every time
we touch real source files such as *.l, *.y)

Some months ago, I sent out RFC patches to run flex, bison, and gperf
during the build.

In the review and test, Linus noticed gperf-3.1 had changed the lookup
function prototype.  Then, the use of gperf in kernel was entirely
removed by commit bb3290d916 ("Remove gperf usage from toolchain").

This time, I tested several versions of flex and bison, and I was not
hit by any compatibility issue except a flaw in flex-2.6.3; if you
generate lexer for dtc and genksyms with flex-2.6.3, you will see
"yywrap redefined" warning.  This was not intentional, but a bug,
fixed by flex-2.6.4.  Otherwise, both flex and bison look fairly
stable for a long time.

This commit prepares some build rules to remove the _shipped files.
Also, document minimal requirement for flex and bison.

Rationale for the minimal version:
The -Wmissing-prototypes option of GCC warns "no previous prototype"
for lexers generated by flex-2.5.34 or older, so I chose 2.5.35 as the
required version for flex.  Flex-2.5.35 was released in 2008.  Bison
looks more stable.  I did not see any problem with bison-2.0, released
in 2004.  I did not test bison-1.x, but bison-2.0 should be old enough.

Tested flex versions:
  2.5.35
  2.5.36
  2.5.37
  2.5.39
  2.6.0
  2.6.1
  2.6.2
  2.6.3   (*)
  2.6.4

 (*) flex-2.6.3 causes "yywrap redefined" warning

Tested bison versions:
  2.0
  2.1
  2.2
  2.3
  2.4
  2.4.1
  2.5.1
  2.6
  2.6.1
  2.6.2
  2.6.3
  2.6.4
  2.6.5
  2.7
  2.7.1
  3.0
  3.0.1
  3.0.2
  3.0.3
  3.0.4

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-12-16 11:12:53 +09:00
Rafael J. Wysocki
c51a024e39 Merge back PM core material for v4.16. 2017-12-16 02:05:48 +01:00
Andreas Färber
49c22f7b87 dt-bindings: Add Infineon TLV493D-A1B6
The Infineon TLV493D-A1B6 is an I2C-based 3D Magnetic Sensor.

Cc: Marius Tarcatu <marius.tarcatu@infineon.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
2017-12-15 15:42:21 -06:00
Nishanth Menon
3b73ad3387 dt-bindings: mailbox: ti,message-manager: Fix interrupt name error
Message Manager's mailbox interrupts are queue based and not proxy
specific. The interrupt names are wrong in the binding, however
correctly reflected in the example provided. Remove the relation
to proxy ID in the documentation of binding. Existing device tree
descriptions follow the correct conventions already and documentation
update has been missed.

Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2017-12-15 15:03:24 -06:00
Jonathan Neuschäfer
271ba36e7b dt-bindings: chosen: Document linux,initrd-{start,end}
These properties have been in use for a very long time (at least since
2005), but were never documented in chosen.txt.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Rob Herring <robh@kernel.org>
2017-12-15 14:57:55 -06:00
Linus Torvalds
227701e0e7 Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:

 - fix incomplete syncing of filesystem

 - fix regression in readdir on ovl over 9p

 - only follow redirects when needed

 - misc fixes and cleanups

* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  ovl: fix overlay: warning prefix
  ovl: Use PTR_ERR_OR_ZERO()
  ovl: Sync upper dirty data when syncing overlayfs
  ovl: update ctx->pos on impure dir iteration
  ovl: Pass ovl_get_nlink() parameters in right order
  ovl: don't follow redirects if redirect_dir=off
2017-12-15 12:46:48 -08:00
Linus Torvalds
06f976ecc7 Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
 "There are some significant fixes in here for FP state corruption,
  hardware access/dirty PTE corruption and an erratum workaround for the
  Falkor CPU.

  I'm hoping that things finally settle down now, but never say never...

  Summary:

   - Fix FPSIMD context switch regression introduced in -rc2

   - Fix ABI break with SVE CPUID register reporting

   - Fix use of uninitialised variable

   - Fixes to hardware access/dirty management and sanity checking

   - CPU erratum workaround for Falkor CPUs

   - Fix reporting of writeable+executable mappings

   - Fix signal reporting for RAS errors"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: fpsimd: Fix copying of FP state from signal frame into task struct
  arm64/sve: Report SVE to userspace via CPUID only if supported
  arm64: fix CONFIG_DEBUG_WX address reporting
  arm64: fault: avoid send SIGBUS two times
  arm64: hw_breakpoint: Use linux/uaccess.h instead of asm/uaccess.h
  arm64: Add software workaround for Falkor erratum 1041
  arm64: Define cputype macros for Falkor CPU
  arm64: mm: Fix false positives in set_pte_at access/dirty race detection
  arm64: mm: Fix pte_mkclean, pte_mkdirty semantics
  arm64: Initialise high_memory global variable earlier
2017-12-15 12:44:49 -08:00
Xingyu Chen
f3dafaa36b documentation: Add compatibles for Amlogic Meson AXG pin controllers
Add compatibles for Amlogic Meson AXG pin controllers

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Rob Herring <robh at kernel.org>
Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2017-12-15 11:56:38 -08:00
Linus Torvalds
1f76a75561 Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
 "Misc fixes:

   - Fix a S390 boot hang that was caused by the lock-break logic.
     Remove lock-break to begin with, as review suggested it was
     unreasonably fragile and our confidence in its continued good
     health is lower than our confidence in its removal.

   - Remove the lockdep cross-release checking code for now, because of
     unresolved false positive warnings. This should make lockdep work
     well everywhere again.

   - Get rid of the final (and single) ACCESS_ONCE() straggler and
     remove the API from v4.15.

   - Fix a liblockdep build warning"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/lib/lockdep: Add missing declaration of 'pr_cont()'
  checkpatch: Remove ACCESS_ONCE() warning
  compiler.h: Remove ACCESS_ONCE()
  tools/include: Remove ACCESS_ONCE()
  tools/perf: Convert ACCESS_ONCE() to READ_ONCE()
  locking/lockdep: Remove the cross-release locking checks
  locking/core: Remove break_lock field when CONFIG_GENERIC_LOCKBREAK=y
  locking/core: Fix deadlock during boot on systems with GENERIC_LOCKBREAK
2017-12-15 11:44:59 -08:00
Miquel Raynal
d160c34134 dt-bindings: mvebu-uart: update documentation with extended UART
Update the device tree binding documentation for the Marvell EBU UART,
in order to allow describing the extended UART IP block, in addition to
the already supported standard UART IP. This requires adding a new
compatible string, the introduction of a clocks property, and extensions
to the interrupts property.

Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-15 20:27:44 +01:00
Russell King
512dc8fed9 dt-bindings: add sff,sff binding for SFP support
Add "sff,sff" for SFF module support with SFP.  These have a different
phys_id value, and also have the present and rate select signals omitted
compared with their socketed counter-parts.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-15 13:23:22 -05:00
Tony Lindgren
20a2742e57 dt-bindings: ti-sysc: Update binding for timers and capabilities
The ti-sysc binding does not yet describe the capabilities of the
interconnect target module. So to make the ti-sysc binding usable
for configuring the interconnect target module, we need to add few
more properties:

1. To detect between omap2 and omap4 timers, let's add compatibles
   for them for "ti,sysc-omap2-timer" and,sysc-omap4-timer". This
   makes it easier to pick up the already initialized system timers
   later on

2. Let's add "ti,sysc-mask" for a mask of features supported by the
   interconnect target module. This describes what we have available
   in the various SYSCONFIG registers

3. Let's add "ti,sysc-midle" and "ti,sysc-sidle" lists for the master
   and slave idle modes supported by the interconnect target module.
   These describe the values available for MIDLE and SIDLE bits in
   the SYSCONFIG registers

4. Some interconnect target modules need a short delay after reset
   before they can be accessed, let's use "ti,sysc-delay-us" for
   that

5. Let's add "ti,syss-mask" bit to describe the optional SYSSTATUS
   register bits for reset done bits

6. Let's support the two existing custom quirk properties already
   listed in Documentation/devicetree/bindings/arm/omap/omap.txt for
   "ti,no-reset-on-init" and "ti,no-idle-on-init"

7. And finally, let's add a header for the binding for the dts
   files and the driver to use

Cc: Benoît Cousson <bcousson@baylibre.com>
Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Nishanth Menon <nm@ti.com>
Cc: Matthijs van Duin <matthijsvanduin@gmail.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Suman Anna <s-anna@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-12-15 09:39:11 -08:00
Sven Eckelmann
d06dfbc6bf batman-adv: Add SPDX license identifier to batman-adv.rst
The "Linux licensing rules" require that also the restructuredText files
are marked with the appropriate SPDX license identifier.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15 17:22:46 +01:00
David S. Miller
8ce38aeb55 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:

====================
pull request (net-next): ipsec-next 2017-12-15

1) Currently we can add or update socket policies, but
   not clear them. Support clearing of socket policies
   too. From Lorenzo Colitti.

2) Add documentation for the xfrm device offload api.
   From Shannon Nelson.

3) Fix IPsec extended sequence numbers (ESN) for
   IPsec offloading. From Yossef Efraim.

4) xfrm_dev_state_add function returns success even for
   unsupported options, fix this to fail in such cases.
   From Yossef Efraim.

5) Remove a redundant xfrm_state assignment.
   From Aviv Heller.

Please pull or let me know if there are problems.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-15 11:10:27 -05:00
Florian Fainelli
3b07d7884c net: dsa: bcm_sf2: Update compatible string for 7278B0
Update the compatible string and Device Tree binding document for
7278B0.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-15 10:57:04 -05:00
Daniel Vetter
5fca5ece6a drm/doc: Move legacy kms helpers to the very end
We don't want people to accidentally stumble over there.

Also rename the plane helpers to legacy plane helpers. After Ville's
patch to make the clipping helper atomic and move it to
drm_atomic_helper.c there's nothing left in there that should be
useful for modern drivers.

v2: Laurent had a few questions around how state is added to
drm_atomic_state, tried to clarify that. And spotted another sentence
where the docs suggested subclassing.

v3: Small polish (Alex).

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171214203054.20141-6-daniel.vetter@ffwll.ch
2017-12-15 11:26:54 +01:00
Daniel Vetter
da6c059697 drm/atomic: document how to handle driver private objects
DK put some nice docs into the commit introducing driver private
state, but in the git history alone it'll be lost.

Also, since Ville remove the void* usage it's a good opportunity to
give the driver private stuff some tlc on the doc front.

Finally try to explain why the "let's just subclass drm_atomic_state"
approach wasn't the greatest, and annotate all those functions as
deprecated in favour of more standardized driver private states. Also
note where we could/should extend driver private states going forward
(atm neither locking nor synchronization is handled in core/helpers,
which isn't really all that great).

v2: Spelling and phrasing improvements (Alex, DK).

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171214203054.20141-5-daniel.vetter@ffwll.ch
2017-12-15 11:26:54 +01:00
Sean Wang
6b79e77c92 mmc: dt-bindings: add mmc support to MT7623 SoC
Add the devicetree binding for MT7623 SoC using MT2701 as the fallback.

Cc: devicetree@vger.kernel.org
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-15 08:12:50 +01:00
Srividya Desireddy
51f73fffbf Documentation/vm/zswap.txt: update with same-value filled page feature
Update zswap document with details on same-value filled pages
identification feature.  The usage of zswap.same_filled_pages_enabled
module parameter is explained.

Link: http://lkml.kernel.org/r/20171206114852epcms5p6973b02a9f455d5d3c765eafda0fe2631@epcms5p6
Signed-off-by: Srividya Desireddy <srividya.dr@samsung.com>
Acked-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-12-14 16:00:48 -08:00
Hans Verkuil
d9806f11b3 media: vidioc-g-dv-timings.rst: fix typo (frontporch -> backporch)
The description of V4L2_DV_FL_HALF_LINE mixed up frontporch with backporch.

It's the backporch that has different sizes for interlaced formats, the frontporch
remains constant.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-14 12:39:14 -05:00
Kalle Valo
1dde35d0b8 Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
ath.git patches for 4.16. Major changes:

ath10k

* enable multiqueue support for all hw using mac80211 wake_tx_queue op

* new Kconfig option ATH10K_SPECTRAL to save RAM

* show tx stats on QCA9880

* new qcom,ath10k-calibration-variant DT entry

* WMI layer support for wcn3990

ath9k

* new Kconfig option ATH9K_COMMON_SPECTRAL to save RAM

wcn36xx

* hardware scan offload support

wil6210

* run-time PM support when interface is down
2017-12-14 18:38:48 +02:00
Mauro Carvalho Chehab
c6b73bfcea media: RC docs: add enum rc_proto description at the docs
This is part of the uAPI. Add it to the documentation again,
and fix cross-references.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Sean Young <sean@mess.org>
2017-12-14 10:35:30 -05:00
Sean Young
7d402db89b media: lirc: document LIRC_MODE_SCANCODE
Lirc supports a new mode which requires documentation.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-14 10:35:21 -05:00
Sean Young
a6ddd4fecb media: lirc: remove last remnants of lirc kapi
rc-core has replaced the lirc kapi many years ago, and now with the last
driver ported to rc-core, we can finally remove it.

Note this has no effect on userspace.

All future IR drivers should use the rc-core api.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-14 10:35:20 -05:00
Sean Young
bf01c82474 media: lirc: remove name from lirc_dev
This is a duplicate of rcdev->driver_name.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2017-12-14 10:35:20 -05:00