GitHub/moto-9609/android_kernel_motorola_exynos9610.git
9 years agoMerge tag 'pxa-for-4.4' of https://github.com/rjarzmik/linux into next/cleanup
Olof Johansson [Fri, 23 Oct 2015 17:15:03 +0000 (10:15 -0700)]
Merge tag 'pxa-for-4.4' of https://github.com/rjarzmik/linux into next/cleanup

This is the pxa changes for v4.4 cycle.

This cycle is bigger than usual :
 - magician was greatly enhanced (new IPs discovered, ...)
 - almost all legacy board files have been updated to the
   new PWM API (mostly for backlight control)
 - some minor fixes in raumfeld, z2 and mioa701

* tag 'pxa-for-4.4' of https://github.com/rjarzmik/linux: (44 commits)
  ARM: pxa: remove incorrect __init annotation on pxa27x_set_pwrmode
  ARM: pxa: raumfeld: make some variables static
  ARM: pxa: magician: Remove pdata for pasic3-leds
  ARM: pxa: magician: Add support for PXA27x UDC
  ARM: pxa: magician: Add support for MAX1587A Vcore regulator
  ARM: pxa: magician: Change comments to be more informative
  ARM: pxa: magician: Move platform_add_devices() to the end of magician_init()
  ARM: pxa: magician: Add missing regulator for PWM backlight
  ARM: pxa: magician: Add debug message for backlight brightness function
  ARM: pxa: magician: Remove definition of the STUART port
  ARM: pxa: magician: Fix wrongly enabled USB host ports
  ARM: pxa: magician: Fix support for Intel Strata NOR Flash
  ARM: pxa: magician: Fix redundant GPIO request for pxaficp_ir
  ARM: pxa: magician: Fix platform data for both PXA27x I2C controllers
  ARM: pxa: magician: Fix and add charging detection functions
  ARM: pxa: magician: Optimize Samsung LCD refresh to 50Hz
  ARM: pxa: magician: Rename charger cable detection EGPIOs
  ARM: pxa: magician: Optimize powerup delays for Samsung LCD
  ARM: pxa: magician: Rename abstract LCD GPIOs
  ARM: pxa: magician: Add new discovered EGPIO pins
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'mvebu-cleanup-4.4-2' of git://git.infradead.org/linux-mvebu into next...
Olof Johansson [Thu, 22 Oct 2015 17:35:28 +0000 (10:35 -0700)]
Merge tag 'mvebu-cleanup-4.4-2' of git://git.infradead.org/linux-mvebu into next/cleanup

mvebu cleanup for 4.4 (part 2)

Remove code related to Armada 375 Z1 stepping no more supported in mainline

* tag 'mvebu-cleanup-4.4-2' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: remove the workaround imprecise abort fault handler

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoARM: Remove __ref on hotplug cpu die path
Stephen Boyd [Mon, 19 Oct 2015 20:05:33 +0000 (13:05 -0700)]
ARM: Remove __ref on hotplug cpu die path

Now that __cpuinit has been removed, the __ref markings on these
functions are useless. Remove them. This also reduces the size of
the multi_v7_defconfig image:

$ size before after
   text    data     bss     dec     hex filename
   12683578        1470996  348904 14503478         dd4e36 before
   12683274        1470996  348904 14503174         dd4d06 after

presumably because now we don't have to jump to code in the
.ref.text section and/or the noinline marking is removed.

Cc: Shiraz Hashim <shiraz.linux.kernel@gmail.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: <linux-omap@vger.kernel.org>
Cc: <linux-arm-msm@vger.kernel.org>
Cc: <spear-devel@list.st.com>
Cc: <linux-tegra@vger.kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Barry Song <baohua@kernel.org>
Acked-by: Andy Gross <agross@codeaurora.org>
Acked-by: Viresh Kumar <vireshk@kernel.org>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoARM: Remove open-coded version of IRQCHIP_DECLARE
Marc Zyngier [Fri, 16 Oct 2015 14:21:10 +0000 (15:21 +0100)]
ARM: Remove open-coded version of IRQCHIP_DECLARE

Now that the IRQCHIP_DECLARE macro has been moved to linux/irqchip.h,
it becomes possible to cleanup the open-coded versions of the same
macro that have been added to some private irqchips implementations.

Cc: Sascha Hauer <kernel@pengutronix.de>
Acked-by: Kukjin Kim <kgene@kernel.org>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoMerge tag 'renesas-cleanup2-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Thu, 22 Oct 2015 16:48:02 +0000 (09:48 -0700)]
Merge tag 'renesas-cleanup2-for-v4.4' of git://git./linux/kernel/git/horms/renesas into next/cleanup

Second Round of Renesas ARM Based SoC Cleanup for v4.4

* Remove now unused legacy pm domain code
* Add missing of_node_put to pm-rmobile
* Corresct spelling of interrupt-names in renesas-memory-controller binding
  documentation
* Correct signdness of CPU id in shmobile apmu implementation
* Make some functions static as appropriate

* tag 'renesas-cleanup2-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: R-Mobile: add missing of_node_put
  ARM: shmobile: dt: Rename incorrect interrupt related binding
  ARM: shmobile: apmu: correct type of CPU id
  ARM: shmobile: r8a7779: Remove legacy PM Domain remainings
  ARM: shmobile: r8a7778: Make r8a7778_init_irq_dt() static
  ARM: shmobile: smp: Make shmobile_smp_apmu_cpu_shutdown() static

Signed-off-by: Olof Johansson <olof@lixom.net>
9 years agoARM: pxa: remove incorrect __init annotation on pxa27x_set_pwrmode
Arnd Bergmann [Mon, 12 Oct 2015 13:46:08 +0000 (15:46 +0200)]
ARM: pxa: remove incorrect __init annotation on pxa27x_set_pwrmode

The z2 machine calls pxa27x_set_pwrmode() in order to power off
the machine, but this function gets discarded early at boot because
it is marked __init, as pointed out by kbuild:

WARNING: vmlinux.o(.text+0x145c4): Section mismatch in reference from the function z2_power_off() to the function .init.text:pxa27x_set_pwrmode()
The function z2_power_off() references
the function __init pxa27x_set_pwrmode().
This is often because z2_power_off lacks a __init
annotation or the annotation of pxa27x_set_pwrmode is wrong.

This removes the __init section modifier to fix rebooting and the
build error.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: ba4a90a6d86a ("ARM: pxa/z2: fix building error of pxa27x_cpu_suspend() no longer available")
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: raumfeld: make some variables static
Uwe Kleine-König [Wed, 14 Oct 2015 09:27:46 +0000 (11:27 +0200)]
ARM: pxa: raumfeld: make some variables static

This fixes the following sparse warnings:

arch/arm/mach-pxa/raumfeld.c:510:24: warning: symbol 'raumfeld_w1_gpio_device' was not declared. Should it be static?
arch/arm/mach-pxa/raumfeld.c:632:31: warning: symbol 'raumfeld_spi_platform_data' was not declared. Should it be static?
arch/arm/mach-pxa/raumfeld.c:851:28: warning: symbol 'audio_va_initdata' was not declared. Should it be static?
arch/arm/mach-pxa/raumfeld.c:883:28: warning: symbol 'audio_dummy_initdata' was not declared. Should it be static?
arch/arm/mach-pxa/raumfeld.c:931:28: warning: symbol 'max8660_v6_subdev_data' was not declared. Should it be static?

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoMerge tag 'omap-for-v4.4/cleanup-pt1' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Thu, 15 Oct 2015 20:00:27 +0000 (22:00 +0200)]
Merge tag 'omap-for-v4.4/cleanup-pt1' of git://git./linux/kernel/git/tmlind/linux-omap into next/cleanup

Merge "Clean-up for omaps for v4.4 merge window" from Tony Lindgren:

- Remove legacy omap3 ISP code as the driver is DT only

- Remove VoiceBlue board support as it's been unused over
  10 years now

- Remove unused polarity control macros for TWL

- Remove two unneeded semicolons

- Remove unused core dpll code for reprogramming the rates

Note that this branch is against v4.3-rc4 as that contains critical
MMC related fixes to boot with MMC working on most omaps.

* tag 'omap-for-v4.4/cleanup-pt1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP3: clock: remove un-used core dpll re-program code
  ARM: OMAP2+: Remove unneeded semicolons
  ARM: OMAP3: vc: Remove unused macros
  ARM: OMAP1: Remove board support for VoiceBlue board
  ARM: OMAP2+: Remove legacy OMAP3 ISP instantiation

9 years agoMerge tag 'mvebu-cleanup-4.4-1' of git://git.infradead.org/linux-mvebu into next...
Arnd Bergmann [Thu, 15 Oct 2015 19:54:05 +0000 (21:54 +0200)]
Merge tag 'mvebu-cleanup-4.4-1' of git://git.infradead.org/linux-mvebu into next/cleanup

Merge "mvebu cleanup for 4.4 (part 1)" from Gregory CLEMENT:

use the CR_C define instead of a literal value

* tag 'mvebu-cleanup-4.4-1' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: Use a CR_C constant instead of a hard-coded one

9 years agoARM: mvebu: remove the workaround imprecise abort fault handler
Lucas Stach [Wed, 14 Oct 2015 14:48:32 +0000 (16:48 +0200)]
ARM: mvebu: remove the workaround imprecise abort fault handler

This is not needed anymore. Handling a potentially pending imprecise
external abort left behind by the bootloader is now done in a slightly
safer way inside the common ARM startup code.

[gregory.clement@free-electrons.com: Beside the Armada 375 Z1 which
initially required this, is no more supported]

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
9 years agoARM: pxa: magician: Remove pdata for pasic3-leds
Petr Cvek [Mon, 28 Sep 2015 21:39:51 +0000 (23:39 +0200)]
ARM: pxa: magician: Remove pdata for pasic3-leds

The pasic3-leds driver was never in vanilla kernel. Actual configuration
data for a hypothetical driver does not describe hardware completely, so
remove them.

This patch prepare HTC Magician machine code to pasic3-leds driver
addition.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Add support for PXA27x UDC
Petr Cvek [Mon, 28 Sep 2015 21:39:33 +0000 (23:39 +0200)]
ARM: pxa: magician: Add support for PXA27x UDC

A PXA27x SoC supports USB device mode, this patch adds support for that.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Add support for MAX1587A Vcore regulator
Petr Cvek [Mon, 28 Sep 2015 21:39:03 +0000 (23:39 +0200)]
ARM: pxa: magician: Add support for MAX1587A Vcore regulator

HTC Magician contains a MAX1587A voltage regulator for a Vcore supply.
The Vcore regulation is required for a CPU speed switching. This patch adds
declaration for the max1586 driver.

Notice:

- MAX1587A version does not support the V6 (USIM) output.
- A boost resistor was directly measured for a board_id 0x3a.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Change comments to be more informative
Petr Cvek [Mon, 28 Sep 2015 21:10:18 +0000 (23:10 +0200)]
ARM: pxa: magician: Change comments to be more informative

This patch changes the comments in the HTC Magician machine source code
to better describe used devices and interfaces.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Move platform_add_devices() to the end of magician_init()
Petr Cvek [Mon, 28 Sep 2015 21:42:23 +0000 (23:42 +0200)]
ARM: pxa: magician: Move platform_add_devices() to the end of magician_init()

This patch moves platform_add_devices() (standard declaration of devices)
outside of the platform specific device declarations. Moving to the end
of the magician_init() clarifies the source code (standard and specific
declaration are not mixed).

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Add missing regulator for PWM backlight
Petr Cvek [Mon, 28 Sep 2015 21:40:57 +0000 (23:40 +0200)]
ARM: pxa: magician: Add missing regulator for PWM backlight

Add a fake regulator, which is required for the correct initialization
of the PWM backlight driver.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
[ added a missing include for fixed regulator ]
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Add debug message for backlight brightness function
Petr Cvek [Mon, 28 Sep 2015 21:40:44 +0000 (23:40 +0200)]
ARM: pxa: magician: Add debug message for backlight brightness function

Add a debug message for the backlight brightness function.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Remove definition of the STUART port
Petr Cvek [Mon, 28 Sep 2015 21:40:23 +0000 (23:40 +0200)]
ARM: pxa: magician: Remove definition of the STUART port

Magician STUART port is connected to the infraport and used by the FICP
driver. The FICP driver uses its own definition.

Required for correct initialization of the pxaficp_ir driver after
planned dmaengine conversion.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Fix wrongly enabled USB host ports
Petr Cvek [Mon, 28 Sep 2015 21:38:03 +0000 (23:38 +0200)]
ARM: pxa: magician: Fix wrongly enabled USB host ports

USB host ports on the HTC Magician are wrongly enabled. Port 1 is for
bluetooth and port 2 is for OTG (mux in the charger connector).

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Fix support for Intel Strata NOR Flash
Petr Cvek [Mon, 28 Sep 2015 21:34:39 +0000 (23:34 +0200)]
ARM: pxa: magician: Fix support for Intel Strata NOR Flash

Old definition for the physmap-flash driver is incomplete:
- Use of an EGPIO without previous request
- Missing the MTD partitions

This patch fixes it. Read functionality was tested on the machine with
board_id 0x3a. Writing was not tested.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Fix redundant GPIO request for pxaficp_ir
Petr Cvek [Mon, 28 Sep 2015 21:34:18 +0000 (23:34 +0200)]
ARM: pxa: magician: Fix redundant GPIO request for pxaficp_ir

The pxaficp_ir driver requests a power GPIO for the transceiver internally,
so a global GPIO allocation in magician_init() is redundant.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Fix platform data for both PXA27x I2C controllers
Petr Cvek [Mon, 28 Sep 2015 21:33:55 +0000 (23:33 +0200)]
ARM: pxa: magician: Fix platform data for both PXA27x I2C controllers

This patch changes fast_mode settings for the normal and power I2C
controller on the HTC Magician machine.

Connected device on the Power I2C:
- MAX1587A: working in the fast mode

Connected devices on the Normal I2C:
- UDA1380: working in the fast mode
- OV9640: bus became stuck in the fast mode

The OV9640 is not using a standard I2C protocol, but an SCCB variant. Maybe
it is not fully compatible in the fast mode. Therefore fast mode for normal
I2C is disabled. If you not using the OV9640 then you can enable the fast
mode for the UDA1380.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
[included Philipp Zabel's comment change]
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Fix and add charging detection functions
Petr Cvek [Mon, 28 Sep 2015 21:33:02 +0000 (23:33 +0200)]
ARM: pxa: magician: Fix and add charging detection functions

This patch fixes the charging detection functions for pda_power driver
(according to newly discovered EGPIOs) and add NiCd backup accumulator
charging support.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Optimize Samsung LCD refresh to 50Hz
Petr Cvek [Mon, 28 Sep 2015 21:32:12 +0000 (23:32 +0200)]
ARM: pxa: magician: Optimize Samsung LCD refresh to 50Hz

Change the default Samsung LCD refresh from an unrealistic 117Hz to 50Hz
as no video applications on the HTC Magician can work that fast.

The optimalization lowers the RAM latency at least by 3%.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Rename charger cable detection EGPIOs
Petr Cvek [Mon, 28 Sep 2015 21:32:40 +0000 (23:32 +0200)]
ARM: pxa: magician: Rename charger cable detection EGPIOs

This patch renames EGPIOs, which are used for the charging cable presence
and type detection. Old names did not correspond with an observed
functionality (on board_id 0x3a). The behavior is not:

- AC charger
- USB charger
- Cable detection

, but:

- AC/USB type
- Cable detection1
- Cable detection2

This patch fixes a possible typo in the bit offset for the cable detection
EGPIO declaration, too.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Optimize powerup delays for Samsung LCD
Petr Cvek [Mon, 28 Sep 2015 21:16:14 +0000 (23:16 +0200)]
ARM: pxa: magician: Optimize powerup delays for Samsung LCD

Delays for the Samsung LCD are greater than needed. These values were
extracted from a datasheet.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Rename abstract LCD GPIOs
Petr Cvek [Mon, 28 Sep 2015 21:15:57 +0000 (23:15 +0200)]
ARM: pxa: magician: Rename abstract LCD GPIOs

This patch renames GPIOs, which are used to control the power lines to
the LCD screen. New names correspond to a real functionality, which was
measured on the HTC Magician board_id 0x3a.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Add new discovered EGPIO pins
Petr Cvek [Mon, 28 Sep 2015 21:15:19 +0000 (23:15 +0200)]
ARM: pxa: magician: Add new discovered EGPIO pins

This patch adds EGPIO pins: Infra transceiver power, NiCD charging and
inserted charger cable.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Change description of LCD power GPIO
Petr Cvek [Mon, 28 Sep 2015 21:11:34 +0000 (23:11 +0200)]
ARM: pxa: magician: Change description of LCD power GPIO

This patch changes the description of the LCD power GPIO to be more
specific.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Optimize debug messages for LCD power
Petr Cvek [Mon, 28 Sep 2015 21:11:11 +0000 (23:11 +0200)]
ARM: pxa: magician: Optimize debug messages for LCD power

Optimize the debug messages for the LCD power.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Print more specific error message for global GPIOs
Petr Cvek [Mon, 28 Sep 2015 21:10:43 +0000 (23:10 +0200)]
ARM: pxa: magician: Print more specific error message for global GPIOs

Print more specific error message for global GPIOs.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: magician: Fix indentation in machine files
Petr Cvek [Mon, 28 Sep 2015 21:09:52 +0000 (23:09 +0200)]
ARM: pxa: magician: Fix indentation in machine files

This patch fixes the indentation for the HTC Magician machine definition.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: zylonite: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:57 +0000 (10:49 +0200)]
ARM: pxa: zylonite: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: z2: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:56 +0000 (10:49 +0200)]
ARM: pxa: z2: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: tavorevb: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:54 +0000 (10:49 +0200)]
ARM: pxa: tavorevb: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: cm-x300: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:41 +0000 (10:49 +0200)]
ARM: pxa: cm-x300: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: palmtc: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:50 +0000 (10:49 +0200)]
ARM: pxa: palmtc: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: viper: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:55 +0000 (10:49 +0200)]
ARM: pxa: viper: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: raumfeld: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:53 +0000 (10:49 +0200)]
ARM: pxa: raumfeld: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: pcm990: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:52 +0000 (10:49 +0200)]
ARM: pxa: pcm990: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: palmte2: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:51 +0000 (10:49 +0200)]
ARM: pxa: palmte2: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: palm27x: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:49 +0000 (10:49 +0200)]
ARM: pxa: palm27x: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: mioa701: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:48 +0000 (10:49 +0200)]
ARM: pxa: mioa701: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: mainstone: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:47 +0000 (10:49 +0200)]
ARM: pxa: mainstone: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
[ split pwm_remove_table() call on 2 lines ]
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: OMAP3: clock: remove un-used core dpll re-program code
Tero Kristo [Wed, 14 Oct 2015 11:49:16 +0000 (14:49 +0300)]
ARM: OMAP3: clock: remove un-used core dpll re-program code

Remove the OMAP3 core DPLL re-program code, and the associated SRAM
code that does the low-level programming of the DPLL divider, idling
of the SDRAM etc.

This code was never fully implemented in the kernel; things missing
were driver side handling of core clock changes (they need to account
for their functional clock rate being changed on-the-fly), and the whole
framework required for handling this. Thus, there is not much point
to keep carrying the low-level support code either.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
9 years agoARM: OMAP2+: Remove unneeded semicolons
Javier Martinez Canillas [Thu, 17 Sep 2015 13:38:05 +0000 (15:38 +0200)]
ARM: OMAP2+: Remove unneeded semicolons

Remove the unneded semicolons since they are clearly a typo error.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
9 years agoARM: OMAP3: vc: Remove unused macros
Javier Martinez Canillas [Thu, 17 Sep 2015 13:24:14 +0000 (15:24 +0200)]
ARM: OMAP3: vc: Remove unused macros

The PRM_POLCTRL_TWL_MASK and PRM_POLCTRL_TWL_MASK
macros are not used so they can be deleted.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
9 years agoARM: OMAP1: Remove board support for VoiceBlue board
Ladislav Michl [Thu, 13 Aug 2015 20:47:18 +0000 (22:47 +0200)]
ARM: OMAP1: Remove board support for VoiceBlue board

Remove board support files for 10 years discontinued VoiceBlue board.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
9 years agoARM: OMAP2+: Remove legacy OMAP3 ISP instantiation
Laurent Pinchart [Thu, 16 Jul 2015 12:55:18 +0000 (15:55 +0300)]
ARM: OMAP2+: Remove legacy OMAP3 ISP instantiation

The OMAP3 ISP is now fully supported in DT, remove its instantiation
from C code.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
9 years agoARM: shmobile: R-Mobile: add missing of_node_put
Julia Lawall [Sat, 10 Oct 2015 12:30:52 +0000 (14:30 +0200)]
ARM: shmobile: R-Mobile: add missing of_node_put

for_each_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

The semantic patch that fixes this problem is as follows
(http://coccinelle.lip6.fr):

// <smpl>
@@
expression root,e;
local idexpression child;
@@

 for_each_child_of_node(root, child) {
   ... when != of_node_put(child)
       when != e = child
(
   return child;
|
+  of_node_put(child);
?  return ...;
)
   ...
 }
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
9 years agoARM: pxa: magician: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:46 +0000 (10:49 +0200)]
ARM: pxa: magician: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: lpd270: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:45 +0000 (10:49 +0200)]
ARM: pxa: lpd270: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: hx4700: Remove unused field initializers
Thierry Reding [Mon, 5 Oct 2015 08:49:44 +0000 (10:49 +0200)]
ARM: pxa: hx4700: Remove unused field initializers

The ID and period for the backlight PWM are obtained from a PWM lookup
table, so the corresponding values don't need to be duplicated into the
platform data.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoMerge tag 'efm32-for-4.4-rc1' of git://git.pengutronix.de/git/ukl/linux into next...
Arnd Bergmann [Tue, 6 Oct 2015 13:59:16 +0000 (15:59 +0200)]
Merge tag 'efm32-for-4.4-rc1' of git://git.pengutronix.de/git/ukl/linux into next/cleanup

Merge "efm32 cleanups for 4.4-rc1" from Uwe Kleine-Koenig:

These are just two followup cleanups for commits that are in v3.17-rc1 and
waited in my private tree for application since that time.

* tag 'efm32-for-4.4-rc1' of git://git.pengutronix.de/git/ukl/linux:
  ARM: efm32: switch to vendor,device compatible strings
  ARM: efm32: switch to properly namespaced location property

9 years agoMerge tag 'renesas-cleanup-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Tue, 6 Oct 2015 13:45:52 +0000 (15:45 +0200)]
Merge tag 'renesas-cleanup-for-v4.4' of git://git./linux/kernel/git/horms/renesas into next/cleanup

Merge "Renesas ARM Based SoC Cleanup for v4.4" from Simon Horman:

* Remove bockw/r8a7798 legacy board and SoC code
* Many cleanups relating to legacy board and SoC code removal

* tag 'renesas-cleanup-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas: (21 commits)
  ARM: shmobile: Remove legacy clock support leftovers
  ARM: shmobile: remove Makefile.boot
  ARM: shmobile: Kconfig: remove unused SHMOBILE_TIMER_HZ section
  ARM: shmobile: bockw: remove legacy DTB build target
  MAINTAINERS: remove references to dropped marzen and bockw defconfigs
  ARM: shmobile: bockw: remove legacy defconfig
  ARM: shmobile: remove ARCH_SHMOBILE_LEGACY option
  ARM: shmobile: r8a7778: remove legacy clock implementation
  ARM: shmobile: Kconfig: remove obsolete option ARCH_R8A7778
  ARM: shmobile: r8a7778: remove obsolete setup code
  ARM: shmobile: bockw: remove legacy board file and config
  ARM: shmobile: remove paragraph on DT reference platforms
  ARM: shmobile: bockw: remove "reference" board file and config
  ARM: shmobile: bockw: remove "reference" device tree
  ARM: shmobile: Remove obsolete twd_local_timer declaration
  ARM: shmobile: Remove obsolete earlytimer registration
  ARM: shmobile: Remove obsolete legacy PM Domain leftovers
  ARM: shmobile: Remove obsolete intc.h
  ARM: shmobile: Remove obsolete custom earlyprintk code
  ARM: shmobile: Remove obsolete sh-gpio.h
  ...

9 years agoARM: pxa: ezx: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:43 +0000 (10:49 +0200)]
ARM: pxa: ezx: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoARM: pxa: colibri-pxa270-income: Use PWM lookup table
Thierry Reding [Mon, 5 Oct 2015 08:49:42 +0000 (10:49 +0200)]
ARM: pxa: colibri-pxa270-income: Use PWM lookup table

Use a PWM lookup table to provide the PWM to the pwm-backlight device.
The driver has a legacy code path that is required only because boards
still use the legacy method of requesting PWMs by global ID. Replacing
these usages allows that legacy fallback to be removed.

Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
9 years agoLinux 4.3-rc4
Linus Torvalds [Sun, 4 Oct 2015 15:57:17 +0000 (16:57 +0100)]
Linux 4.3-rc4

9 years agoMerge branch 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf...
Linus Torvalds [Sun, 4 Oct 2015 15:31:13 +0000 (16:31 +0100)]
Merge branch 'strscpy' of git://git./linux/kernel/git/cmetcalf/linux-tile

Pull strscpy string copy function implementation from Chris Metcalf.

Chris sent this during the merge window, but I waffled back and forth on
the pull request, which is why it's going in only now.

The new "strscpy()" function is definitely easier to use and more secure
than either strncpy() or strlcpy(), both of which are horrible nasty
interfaces that have serious and irredeemable problems.

strncpy() has a useless return value, and doesn't NUL-terminate an
overlong result.  To make matters worse, it pads a short result with
zeroes, which is a performance disaster if you have big buffers.

strlcpy(), by contrast, is a mis-designed "fix" for strlcpy(), lacking
the insane NUL padding, but having a differently broken return value
which returns the original length of the source string.  Which means
that it will read characters past the count from the source buffer, and
you have to trust the source to be properly terminated.  It also makes
error handling fragile, since the test for overflow is unnecessarily
subtle.

strscpy() avoids both these problems, guaranteeing the NUL termination
(but not excessive padding) if the destination size wasn't zero, and
making the overflow condition very obvious by returning -E2BIG.  It also
doesn't read past the size of the source, and can thus be used for
untrusted source data too.

So why did I waffle about this for so long?

Every time we introduce a new-and-improved interface, people start doing
these interminable series of trivial conversion patches.

And every time that happens, somebody does some silly mistake, and the
conversion patch to the improved interface actually makes things worse.
Because the patch is mindnumbing and trivial, nobody has the attention
span to look at it carefully, and it's usually done over large swatches
of source code which means that not every conversion gets tested.

So I'm pulling the strscpy() support because it *is* a better interface.
But I will refuse to pull mindless conversion patches.  Use this in
places where it makes sense, but don't do trivial patches to fix things
that aren't actually known to be broken.

* 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tile: use global strscpy() rather than private copy
  string: provide strscpy()
  Make asm/word-at-a-time.h available on all architectures

9 years agoMerge tag 'md/4.3-fixes' of git://neil.brown.name/md
Linus Torvalds [Sun, 4 Oct 2015 10:47:28 +0000 (11:47 +0100)]
Merge tag 'md/4.3-fixes' of git://neil.brown.name/md

Pull md fixes from Neil Brown:
 "Assorted fixes for md in 4.3-rc.

  Two tagged for -stable, and one is really a cleanup to match and
  improve kmemcache interface.

* tag 'md/4.3-fixes' of git://neil.brown.name/md:
  md/bitmap: don't pass -1 to bitmap_storage_alloc.
  md/raid1: Avoid raid1 resync getting stuck
  md: drop null test before destroy functions
  md: clear CHANGE_PENDING in readonly array
  md/raid0: apply base queue limits *before* disk_stack_limits
  md/raid5: don't index beyond end of array in need_this_block().
  raid5: update analysis state for failed stripe
  md: wait for pending superblock updates before switching to read-only

9 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Sun, 4 Oct 2015 10:41:58 +0000 (11:41 +0100)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:
 "This week's round of MIPS fixes:
   - Fix JZ4740 build
   - Fix fallback to GFP_DMA
   - FP seccomp in case of ENOSYS
   - Fix bootmem panic
   - A number of FP and CPS fixes
   - Wire up new syscalls
   - Make sure BPF assembler objects can properly be disassembled
   - Fix BPF assembler code for MIPS I"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: scall: Always run the seccomp syscall filters
  MIPS: Octeon: Fix kernel panic on startup from memory corruption
  MIPS: Fix R2300 FP context switch handling
  MIPS: Fix octeon FP context switch handling
  MIPS: BPF: Fix load delay slots.
  MIPS: BPF: Do all exports of symbols with FEXPORT().
  MIPS: Fix the build on jz4740 after removing the custom gpio.h
  MIPS: CPS: #ifdef on CONFIG_MIPS_MT_SMP rather than CONFIG_MIPS_MT
  MIPS: CPS: Don't include MT code in non-MT kernels.
  MIPS: CPS: Stop dangling delay slot from has_mt.
  MIPS: dma-default: Fix 32-bit fall back to GFP_DMA
  MIPS: Wire up userfaultfd and membarrier syscalls.

9 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 4 Oct 2015 10:40:09 +0000 (11:40 +0100)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "This update contains:

   - Fix for a long standing race affecting /proc/irq/NNN

   - One line fix for ARM GICV3-ITS counting the wrong data

   - Warning silencing in ARM GICV3-ITS.  Another GCC trying to be
     overly clever issue"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/gic-v3-its: Count additional LPIs for the aliased devices
  irqchip/gic-v3-its: Silence warning when its_lpi_alloc_chunks gets inlined
  genirq: Fix race in register_irq_proc()

9 years agoMIPS: scall: Always run the seccomp syscall filters
Markos Chandras [Fri, 25 Sep 2015 07:17:42 +0000 (08:17 +0100)]
MIPS: scall: Always run the seccomp syscall filters

The MIPS syscall handler code used to return -ENOSYS on invalid
syscalls. Whilst this is expected, it caused problems for seccomp
filters because the said filters never had the change to run since
the code returned -ENOSYS before triggering them. This caused
problems on the chromium testsuite for filters looking for invalid
syscalls. This has now changed and the seccomp filters are always
run even if the syscall is invalid. We return -ENOSYS once we
return from the seccomp filters. Moreover, similar codepaths have
been merged in the process which simplifies somewhat the overall
syscall code.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11236/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 3 Oct 2015 14:53:05 +0000 (10:53 -0400)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Fixes all around the map: W+X kernel mapping fix, WCHAN fixes, two
  build failure fixes for corner case configs, x32 header fix and a
  speling fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/headers/uapi: Fix __BITS_PER_LONG value for x32 builds
  x86/mm: Set NX on gap between __ex_table and rodata
  x86/kexec: Fix kexec crash in syscall kexec_file_load()
  x86/process: Unify 32bit and 64bit implementations of get_wchan()
  x86/process: Add proper bound checks in 64bit get_wchan()
  x86, efi, kasan: Fix build failure on !KASAN && KMEMCHECK=y kernels
  x86/hyperv: Fix the build in the !CONFIG_KEXEC_CORE case
  x86/cpufeatures: Correct spelling of the HWP_NOTIFY flag

9 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 3 Oct 2015 14:51:41 +0000 (10:51 -0400)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Ingo Molnar:
 "An abs64() fix in the watchdog driver, and two clocksource driver
  NO_IRQ assumption fixes"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: Fix abs() usage w/ 64bit values
  clocksource/drivers/keystone: Fix bad NO_IRQ usage
  clocksource/drivers/rockchip: Fix bad NO_IRQ usage

9 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 3 Oct 2015 14:46:41 +0000 (10:46 -0400)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull EFI fixes from Ingo Molnar:
 "Two EFI fixes: one for x86, one for ARM, fixing a boot crash bug that
  can trigger under newer EFI firmware"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  arm64/efi: Fix boot crash by not padding between EFI_MEMORY_RUNTIME regions
  x86/efi: Fix boot crash by mapping EFI memmap entries bottom-up at runtime, instead of top-down

9 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sat, 3 Oct 2015 14:39:31 +0000 (10:39 -0400)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Bunch of fixes all over the place, all pretty small: amdgpu, i915,
  exynos, one qxl and one vmwgfx.

  There is also a bunch of mst fixes, I left some cleanups in the series
  as I didn't think it was worth splitting up the tested series"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (37 commits)
  drm/dp/mst: add some defines for logical/physical ports
  drm/dp/mst: drop cancel work sync in the mstb destroy path (v2)
  drm/dp/mst: split connector registration into two parts (v2)
  drm/dp/mst: update the link_address_sent before sending the link address (v3)
  drm/dp/mst: fixup handling hotplug on port removal.
  drm/dp/mst: don't pass port into the path builder function
  drm/radeon: drop radeon_fb_helper_set_par
  drm: handle cursor_set2 in restore_fbdev_mode
  drm/exynos: Staticize local function in exynos_drm_gem.c
  drm/exynos: fimd: actually disable dp clock
  drm/exynos: dp: remove suspend/resume functions
  drm/qxl: recreate the primary surface when the bo is not primary
  drm/amdgpu: only print meaningful VM faults
  drm/amdgpu/cgs: remove import_gpu_mem
  drm/i915: Call non-locking version of drm_kms_helper_poll_enable(), v2
  drm: Add a non-locking version of drm_kms_helper_poll_enable(), v2
  drm/vmwgfx: Fix a command submission hang regression
  drm/exynos: remove unused mode_fixup() code
  drm/exynos: remove decon_mode_fixup()
  drm/exynos: remove fimd_mode_fixup()
  ...

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 2 Oct 2015 21:53:25 +0000 (17:53 -0400)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input layer fixes from Dmitry Torokhov:
 "Fixes for two recent regressions (in Synaptics PS/2 and uinput
  drivers) and some more driver fixups"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Revert "Input: synaptics - fix handling of disabling gesture mode"
  Input: psmouse - fix data race in __ps2_command
  Input: elan_i2c - add all valid ic type for i2c/smbus
  Input: zhenhua - ensure we have BITREVERSE
  Input: omap4-keypad - fix memory leak
  Input: serio - fix blocking of parport
  Input: uinput - fix crash when using ABS events
  Input: elan_i2c - expand maximum product_id form 0xFF to 0xFFFF
  Input: elan_i2c - add ic type 0x03
  Input: elan_i2c - don't require known iap version
  Input: imx6ul_tsc - fix controller name
  Input: imx6ul_tsc - use the preferred method for kzalloc()
  Input: imx6ul_tsc - check for negative return value
  Input: imx6ul_tsc - propagate the errors
  Input: walkera0701 - fix abs() calculations on 64 bit values
  Input: mms114 - remove unneded semicolons
  Input: pm8941-pwrkey - remove unneded semicolon
  Input: fix typo in MT documentation
  Input: cyapa - fix address of Gen3 devices in device tree documentation

9 years agoclocksource: Fix abs() usage w/ 64bit values
John Stultz [Tue, 15 Sep 2015 01:05:20 +0000 (18:05 -0700)]
clocksource: Fix abs() usage w/ 64bit values

This patch fixes one cases where abs() was being used with 64-bit
nanosecond values, where the result may be capped at 32-bits.

This potentially could cause watchdog false negatives on 32-bit
systems, so this patch addresses the issue by using abs64().

Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1442279124-7309-2-git-send-email-john.stultz@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
9 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 2 Oct 2015 18:54:16 +0000 (14:54 -0400)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Fix for transparent huge page change_protection() logic which was
   inadvertently changing a huge pmd page into a pmd table entry.

 - Function graph tracer panic fix caused by the return_to_handler code
   corrupting the multi-regs function return value (composite types).

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: ftrace: fix function_graph tracer panic
  arm64: Fix THP protection change logic

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Fri, 2 Oct 2015 18:51:46 +0000 (14:51 -0400)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k updates from Geert Uytterhoeven:
 "Summary:
   - Fix for accidental modification of arguments of syscall functions
   - Wire up new syscalls
   - Update defconfigs"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/defconfig: Update defconfigs for v4.3-rc1
  m68k: Define asmlinkage_protect
  m68k: Wire up membarrier
  m68k: Wire up userfaultfd
  m68k: Wire up direct socket calls

9 years agoirqchip/gic-v3-its: Count additional LPIs for the aliased devices
Marc Zyngier [Fri, 2 Oct 2015 15:44:06 +0000 (16:44 +0100)]
irqchip/gic-v3-its: Count additional LPIs for the aliased devices

When configuring the interrupt mapping for a new device, we
iterate over all the possible aliases to account for their
maximum MSI allocation. This was introduced by e8137f4f5088
("irqchip: gicv3-its: Iterate over PCI aliases to generate ITS configuration").

Turns out that the code doing that is a bit braindead, and repeatedly
accounts for the same device over and over.

Fix this by counting the actual alias that is passed to us by the
core code.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Alex Shi <alex.shi@linaro.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1443800646-8074-3-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
9 years agoirqchip/gic-v3-its: Silence warning when its_lpi_alloc_chunks gets inlined
Marc Zyngier [Fri, 2 Oct 2015 15:44:05 +0000 (16:44 +0100)]
irqchip/gic-v3-its: Silence warning when its_lpi_alloc_chunks gets inlined

More agressive inlining in recent versions of GCC have uncovered
a new set of warnings:

 drivers/irqchip/irq-gic-v3-its.c: In function its_msi_prepare:
  drivers/irqchip/irq-gic-v3-its.c:1148:26: warning: lpi_base may be used
    uninitialized in this function [-Wmaybe-uninitialized]
     dev->event_map.lpi_base = lpi_base;
                          ^
 drivers/irqchip/irq-gic-v3-its.c:1116:6: note: lpi_base was declared here
  int lpi_base;
      ^
 drivers/irqchip/irq-gic-v3-its.c:1149:25: warning: nr_lpis may be used
  uninitialized in this function [-Wmaybe-uninitialized]
   dev->event_map.nr_lpis = nr_lpis;
                         ^
 drivers/irqchip/irq-gic-v3-its.c:1117:6: note: nr_lpis was declared here
  int nr_lpis;
      ^
The warning is fairly benign (there is no code path that could
actually use uninitialized variables), but let's silence it anyway
by zeroing the variables on the error path.

Reported-by: Alex Shi <alex.shi@linaro.org>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Link: http://lkml.kernel.org/r/1443800646-8074-2-git-send-email-marc.zyngier@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
9 years agoMerge tag 'dmaengine-fix-4.3-rc4' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Fri, 2 Oct 2015 18:46:15 +0000 (14:46 -0400)]
Merge tag 'dmaengine-fix-4.3-rc4' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "This contains fixes spread throughout the drivers, and also fixes one
  more instance of privatecnt in dmaengine.

  Driver fixes summary:
   - bunch of pxa_dma fixes for reuse of descriptor issue, residue and
     no-requestor
   - odd fixes in xgene, idma, sun4i and zxdma
   - at_xdmac fixes for cleaning descriptor and block addr mode"

* tag 'dmaengine-fix-4.3-rc4' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: pxa_dma: fix residue corner case
  dmaengine: pxa_dma: fix the no-requestor case
  dmaengine: zxdma: Fix off-by-one for testing valid pchan request
  dmaengine: at_xdmac: clean used descriptor
  dmaengine: at_xdmac: change block increment addressing mode
  dmaengine: dw: properly read DWC_PARAMS register
  dmaengine: xgene-dma: Fix overwritting DMA tx ring
  dmaengine: fix balance of privatecnt
  dmaengine: sun4i: fix unsafe list iteration
  dmaengine: idma64: improve residue estimation
  dmaengine: xgene-dma: fix handling xgene_dma_get_ring_size result
  dmaengine: pxa_dma: fix initial list move

9 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 2 Oct 2015 18:40:57 +0000 (14:40 -0400)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Another week, another round of fixes.

  These have been brewing for a bit and in various iterations, but I
  feel pretty comfortable about the quality of them.  They fix real
  issues.  The pull request is mostly blk-mq related, and the only one
  not fixing a real bug, is the tag iterator abstraction from Christoph.
  But it's pretty trivial, and we'll need it for another fix soon.

  Apart from the blk-mq fixes, there's an NVMe affinity fix from Keith,
  and a single fix for xen-blkback from Roger fixing failure to free
  requests on disconnect"

* 'for-linus' of git://git.kernel.dk/linux-block:
  blk-mq: factor out a helper to iterate all tags for a request_queue
  blk-mq: fix racy updates of rq->errors
  blk-mq: fix deadlock when reading cpu_list
  blk-mq: avoid inserting requests before establishing new mapping
  blk-mq: fix q->mq_usage_counter access race
  blk-mq: Fix use after of free q->mq_map
  blk-mq: fix sysfs registration/unregistration race
  blk-mq: avoid setting hctx->tags->cpumask before allocation
  NVMe: Set affinity after allocating request queues
  xen/blkback: free requests on disconnection

9 years agoRevert "Input: synaptics - fix handling of disabling gesture mode"
Dmitry Torokhov [Fri, 2 Oct 2015 17:31:32 +0000 (10:31 -0700)]
Revert "Input: synaptics - fix handling of disabling gesture mode"

This reverts commit e51e38494a8ecc18650efb0c840600637891de2c: we
actually do want the device to work in extended W mode, as this is the
mode that allows us receiving multiple contact information.

Cc: stable@vger.kernel.org
9 years agoMIPS: Octeon: Fix kernel panic on startup from memory corruption
Matt Bennett [Wed, 30 Sep 2015 04:40:42 +0000 (17:40 +1300)]
MIPS: Octeon: Fix kernel panic on startup from memory corruption

During development it was found that a number of builds would panic
during the kernel init process, more specifically in 'delayed_fput()'.
The panic showed the kernel trying to access a memory address of
'0xb7fdc00' while traversing the 'delayed_fput_list' structure.
Comparing this memory address to the value of the pointer used on
builds that did not panic confirmed that the pointer on crashing
builds must have been corrupted at some stage earlier in the init
process.

By traversing the list earlier and earlier in the code it was found
that 'plat_mem_setup()' was responsible for corrupting the list.
Specifically the line:

    memory = cvmx_bootmem_phy_alloc(mem_alloc_size,
__pa_symbol(&__init_end), -1,
0x100000,
CVMX_BOOTMEM_FLAG_NO_LOCKING);

Which would eventually call:

    cvmx_bootmem_phy_set_size(new_ent_addr,
cvmx_bootmem_phy_get_size
(ent_addr) -
(desired_min_addr -
ent_addr));

Where 'new_ent_addr'=0x4800000 (the address of 'delayed_fput_list')
and the second argument (size)=0xb7fdc00 (the address causing the
kernel panic). The job of this part of 'plat_mem_setup()' is to
allocate chunks of memory for the kernel to use. At the start of
each chunk of memory the size of the chunk is written, hence the
value 0xb7fdc00 is written onto memory at 0x4800000, therefore the
kernel panics when it goes back to access 'delayed_fput_list' later
on in the initialisation process.

On builds that were not crashing it was found that the compiler had
placed 'delayed_fput_list' at 0x4800008, meaning it wasn't corrupted
(but something else in memory was overwritten).

As can be seen in the first function call above the code begins to
allocate chunks of memory beginning from the symbol '__init_end'.
The MIPS linker script (vmlinux.lds.S) however defines the .bss
section to begin after '__init_end'. Therefore memory within the
.bss section is allocated to the kernel to use (System.map shows
'delayed_fput_list' and other kernel structures to be in .bss).

To stop the kernel panic (and the .bss section being corrupted)
memory should begin being allocated from the symbol '_end'.

Signed-off-by: Matt Bennett <matt.bennett@alliedtelesis.co.nz>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: aleksey.makarov@auriga.com
Patchwork: https://patchwork.linux-mips.org/patch/11251/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Fix R2300 FP context switch handling
Paul Burton [Mon, 21 Sep 2015 17:07:42 +0000 (10:07 -0700)]
MIPS: Fix R2300 FP context switch handling

Commit 1a3d59579b9f ("MIPS: Tidy up FPU context switching") removed FP
context saving from the asm-written resume function in favour of reusing
existing code to perform the same task. However it only removed the FP
context saving code from the r4k_switch.S implementation of resume.
Remove it from the r2300_switch.S implementation too in order to prevent
attempting to save the FP context twice, which would likely lead to an
exception from the second save because the FPU had already been disabled
by the first save.

This patch has only been build tested, using rbtx49xx_defconfig.

Fixes: 1a3d59579b9f ("MIPS: Tidy up FPU context switching")
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-kernel@vger.kernel.org
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/11167/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Fix octeon FP context switch handling
Paul Burton [Mon, 21 Sep 2015 17:07:41 +0000 (10:07 -0700)]
MIPS: Fix octeon FP context switch handling

Commit 1a3d59579b9f ("MIPS: Tidy up FPU context switching") removed FP
context saving from the asm-written resume function in favour of reusing
existing code to perform the same task. However it only removed the FP
context saving code from the r4k_switch.S implementation of resume.
Octeon uses its own implementation in octeon_switch.S, so remove FP
context saving there too in order to prevent attempting to save context
twice. That formerly led to an exception from the second save as follows
because the FPU had already been disabled by the first save:

    do_cpu invoked from kernel context![#1]:
    CPU: 0 PID: 2 Comm: kthreadd Not tainted 4.3.0-rc2-dirty #2
    task: 800000041f84a008 ti: 800000041f864000 task.ti: 800000041f864000
    $ 0   : 0000000000000000 0000000010008ce1 0000000000100000 ffffffffbfffffff
    $ 4   : 800000041f84a008 800000041f84ac08 800000041f84c000 0000000000000004
    $ 8   : 0000000000000001 0000000000000000 0000000000000000 0000000000000001
    $12   : 0000000010008ce3 0000000000119c60 0000000000000036 800000041f864000
    $16   : 800000041f84ac08 800000000792ce80 800000041f84a008 ffffffff81758b00
    $20   : 0000000000000000 ffffffff8175ae50 0000000000000000 ffffffff8176c740
    $24   : 0000000000000006 ffffffff81170300
    $28   : 800000041f864000 800000041f867d90 0000000000000000 ffffffff815f3fa0
    Hi    : 0000000000fa8257
    Lo    : ffffffffe15cfc00
    epc   : ffffffff8112821c resume+0x9c/0x200
    ra    : ffffffff815f3fa0 __schedule+0x3f0/0x7d8
    Status: 10008ce2        KX SX UX KERNEL EXL
    Cause : 1080002c (ExcCode 0b)
    PrId  : 000d0601 (Cavium Octeon+)
    Modules linked in:
    Process kthreadd (pid: 2, threadinfo=800000041f864000, task=800000041f84a008, tls=0000000000000000)
    Stack : ffffffff81604218 ffffffff815f7e08 800000041f84a008 ffffffff811681b0
              800000041f84a008 ffffffff817e9878 0000000000000000 ffffffff81770000
              ffffffff81768340 ffffffff81161398 0000000000000001 0000000000000000
              0000000000000000 ffffffff815f4424 0000000000000000 ffffffff81161d68
              ffffffff81161be8 0000000000000000 0000000000000000 0000000000000000
              0000000000000000 0000000000000000 0000000000000000 ffffffff8111e16c
              0000000000000000 0000000000000000 0000000000000000 0000000000000000
              0000000000000000 0000000000000000 0000000000000000 0000000000000000
              0000000000000000 0000000000000000 0000000000000000 0000000000000000
              0000000000000000 0000000000000000 0000000000000000 0000000000000000
              ...
    Call Trace:
    [<ffffffff8112821c>] resume+0x9c/0x200
    [<ffffffff815f3fa0>] __schedule+0x3f0/0x7d8
    [<ffffffff815f4424>] schedule+0x34/0x98
    [<ffffffff81161d68>] kthreadd+0x180/0x198
    [<ffffffff8111e16c>] ret_from_kernel_thread+0x14/0x1c

Tested using cavium_octeon_defconfig on an EdgeRouter Lite.

Fixes: 1a3d59579b9f ("MIPS: Tidy up FPU context switching")
Reported-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Aleksey Makarov <aleksey.makarov@auriga.com>
Cc: linux-kernel@vger.kernel.org
Cc: Chandrakala Chavva <cchavva@caviumnetworks.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Leonid Rosenboim <lrosenboim@caviumnetworks.com>
Patchwork: https://patchwork.linux-mips.org/patch/11166/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMerge tag 'mmc-v4.3-rc3' of git://git.linaro.org/people/ulf.hansson/mmc
Linus Torvalds [Fri, 2 Oct 2015 12:03:04 +0000 (08:03 -0400)]
Merge tag 'mmc-v4.3-rc3' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC fixes from Ulf Hansson:
 "Here are some mmc fixes intended for v4.3 rc4:

  MMC core:
   - Allow users of mmc_of_parse() to succeed when CONFIG_GPIOLIB is
     unset
   - Prevent infinite loop of re-tuning for CRC-errors for CMD19 and
     CMD21

   MMC host:
   - pxamci: Fix issues with card detect
   - sunxi: Fix clk-delay settings"

* tag 'mmc-v4.3-rc3' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: core: fix dead loop of mmc_retune
  mmc: pxamci: fix card detect with slot-gpio API
  mmc: sunxi: Fix clk-delay settings
  mmc: core: Don't return an error for CD/WP GPIOs when GPIOLIB is unset

9 years agoMerge git://git.infradead.org/intel-iommu
Linus Torvalds [Fri, 2 Oct 2015 11:59:29 +0000 (07:59 -0400)]
Merge git://git.infradead.org/intel-iommu

Pull IOVA fixes from David Woodhouse:
 "The main fix here is the first one, fixing the over-allocation of
   size-aligned requests.  The other patches simply make the existing
  IOVA code available to users other than the Intel VT-d driver, with no
  functional change.

  I concede the latter really *should* have been submitted during the
  merge window, but since it's basically risk-free and people are
  waiting to build on top of it and it's my fault I didn't get it in, I
  (and they) would be grateful if you'd take it"

* git://git.infradead.org/intel-iommu:
  iommu: Make the iova library a module
  iommu: iova: Export symbols
  iommu: iova: Move iova cache management to the iova library
  iommu/iova: Avoid over-allocating when size-aligned

9 years agoarm64: ftrace: fix function_graph tracer panic
Li Bin [Wed, 30 Sep 2015 02:49:55 +0000 (10:49 +0800)]
arm64: ftrace: fix function_graph tracer panic

When function graph tracer is enabled, the following operation
will trigger panic:

mount -t debugfs nodev /sys/kernel
echo next_tgid > /sys/kernel/tracing/set_ftrace_filter
echo function_graph > /sys/kernel/tracing/current_tracer
ls /proc/

------------[ cut here ]------------
[  198.501417] Unable to handle kernel paging request at virtual address cb88537fdc8ba316
[  198.506126] pgd = ffffffc008f79000
[  198.509363] [cb88537fdc8ba316] *pgd=00000000488c6003, *pud=00000000488c6003, *pmd=0000000000000000
[  198.517726] Internal error: Oops: 94000005 [#1] SMP
[  198.518798] Modules linked in:
[  198.520582] CPU: 1 PID: 1388 Comm: ls Tainted: G
[  198.521800] Hardware name: linux,dummy-virt (DT)
[  198.522852] task: ffffffc0fa9e8000 ti: ffffffc0f9ab0000 task.ti: ffffffc0f9ab0000
[  198.524306] PC is at next_tgid+0x30/0x100
[  198.525205] LR is at return_to_handler+0x0/0x20
[  198.526090] pc : [<ffffffc0002a1070>] lr : [<ffffffc0000907c0>] pstate: 60000145
[  198.527392] sp : ffffffc0f9ab3d40
[  198.528084] x29: ffffffc0f9ab3d40 x28: ffffffc0f9ab0000
[  198.529406] x27: ffffffc000d6a000 x26: ffffffc000b786e8
[  198.530659] x25: ffffffc0002a1900 x24: ffffffc0faf16c00
[  198.531942] x23: ffffffc0f9ab3ea0 x22: 0000000000000002
[  198.533202] x21: ffffffc000d85050 x20: 0000000000000002
[  198.534446] x19: 0000000000000002 x18: 0000000000000000
[  198.535719] x17: 000000000049fa08 x16: ffffffc000242efc
[  198.537030] x15: 0000007fa472b54c x14: ffffffffff000000
[  198.538347] x13: ffffffc0fada84a0 x12: 0000000000000001
[  198.539634] x11: ffffffc0f9ab3d70 x10: ffffffc0f9ab3d70
[  198.540915] x9 : ffffffc0000907c0 x8 : ffffffc0f9ab3d40
[  198.542215] x7 : 0000002e330f08f0 x6 : 0000000000000015
[  198.543508] x5 : 0000000000000f08 x4 : ffffffc0f9835ec0
[  198.544792] x3 : cb88537fdc8ba316 x2 : cb88537fdc8ba306
[  198.546108] x1 : 0000000000000002 x0 : ffffffc000d85050
[  198.547432]
[  198.547920] Process ls (pid: 1388, stack limit = 0xffffffc0f9ab0020)
[  198.549170] Stack: (0xffffffc0f9ab3d40 to 0xffffffc0f9ab4000)
[  198.582568] Call trace:
[  198.583313] [<ffffffc0002a1070>] next_tgid+0x30/0x100
[  198.584359] [<ffffffc0000907bc>] ftrace_graph_caller+0x6c/0x70
[  198.585503] [<ffffffc0000907bc>] ftrace_graph_caller+0x6c/0x70
[  198.586574] [<ffffffc0000907bc>] ftrace_graph_caller+0x6c/0x70
[  198.587660] [<ffffffc0000907bc>] ftrace_graph_caller+0x6c/0x70
[  198.588896] Code: aa0003f5 2a0103f4 b4000102 91004043 (885f7c60)
[  198.591092] ---[ end trace 6a346f8f20949ac8 ]---

This is because when using function graph tracer, if the traced
function return value is in multi regs ([x0-x7]), return_to_handler
may corrupt them. So in return_to_handler, the parameter regs should
be protected properly.

Cc: <stable@vger.kernel.org> # 3.18+
Signed-off-by: Li Bin <huawei.libin@huawei.com>
Acked-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
9 years agoMIPS: BPF: Fix load delay slots.
Ralf Baechle [Fri, 2 Oct 2015 07:48:57 +0000 (09:48 +0200)]
MIPS: BPF: Fix load delay slots.

The entire bpf_jit_asm.S is written in noreorder mode because "we know
better" according to a comment.  This also prevented the assembler from
throwing in the required NOPs for MIPS I processors which have no
load-use interlock, thus the load's consumer might end up using the
old value of the register from prior to the load.

Fixed by putting the assembler in reorder mode for just the affected
load instructions.  This is not enough for gas to actually try to be
clever by looking at the next instruction and inserting a nop only
when needed but as the comment said "we know better", so getting gas
to unconditionally emit a NOP is just right in this case and prevents
adding further ifdefery.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agox86/headers/uapi: Fix __BITS_PER_LONG value for x32 builds
Ben Hutchings [Thu, 1 Oct 2015 00:40:43 +0000 (01:40 +0100)]
x86/headers/uapi: Fix __BITS_PER_LONG value for x32 builds

On x32, gcc predefines __x86_64__ but long is only 32-bit.  Use
__ILP32__ to distinguish x32.

Fixes this compiler error in perf:

tools/include/asm-generic/bitops/__ffs.h: In function '__ffs':
tools/include/asm-generic/bitops/__ffs.h:19:8: error: right shift count >= width of type [-Werror=shift-count-overflow]
  word >>= 32;
       ^

This isn't sufficient to build perf for x32, though.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1443660043.2730.15.camel@decadent.org.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agomd/bitmap: don't pass -1 to bitmap_storage_alloc.
NeilBrown [Thu, 1 Oct 2015 06:03:38 +0000 (16:03 +1000)]
md/bitmap: don't pass -1 to bitmap_storage_alloc.

Passing -1 to bitmap_storage_alloc() causes page->index to be set to
-1, which is quite problematic.

So only pass ->cluster_slot if mddev_is_clustered().

Fixes: b97e92574c0b ("Use separate bitmaps for each nodes in the cluster")
Cc: stable@vger.kernel.org (v4.1+)
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd/raid1: Avoid raid1 resync getting stuck
Jes Sorensen [Wed, 16 Sep 2015 14:20:05 +0000 (10:20 -0400)]
md/raid1: Avoid raid1 resync getting stuck

close_sync() needs to set conf->next_resync to a large, but safe value
below MaxSector and use it to determine whether or not to set
start_next_window in wait_barrier()

Solution suggested by Neil Brown.

Reported-by: Nate Dailey <nate.dailey@stratus.com>
Tested-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd: drop null test before destroy functions
Julia Lawall [Sun, 13 Sep 2015 12:15:10 +0000 (14:15 +0200)]
md: drop null test before destroy functions

Remove unneeded NULL test.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ expression x; @@
-if (x != NULL)
  \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd: clear CHANGE_PENDING in readonly array
Shaohua Li [Fri, 18 Sep 2015 17:20:12 +0000 (10:20 -0700)]
md: clear CHANGE_PENDING in readonly array

If faulty disks of an array are more than allowed degraded number, the
array enters error handling. It will be marked as read-only with
MD_CHANGE_PENDING/RECOVERY_NEEDED set. But currently recovery doesn't
clear CHANGE_PENDING bit for read-only array.  If MD_CHANGE_PENDING is
set for a raid5 array, all returned IO will be hold on a list till the
bit is clear. But recovery nevery clears this bit, the IO is always in
pending state and nevery finish. This has bad effects like upper layer
can't get an IO error and the array can't be stopped.

Fixes: c3cce6cda162 ("md/raid5: ensure device failure recorded before write request returns.")
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd/raid0: apply base queue limits *before* disk_stack_limits
NeilBrown [Thu, 24 Sep 2015 05:47:47 +0000 (15:47 +1000)]
md/raid0: apply base queue limits *before* disk_stack_limits

Calling e.g. blk_queue_max_hw_sectors() after calls to
disk_stack_limits() discards the settings determined by
disk_stack_limits().
So we need to make those calls first.

Fixes: 199dc6ed5179 ("md/raid0: update queue parameter in a safer location.")
Cc: stable@vger.kernel.org (v2.6.35+ - please apply with 199dc6ed5179).
Reported-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd/raid5: don't index beyond end of array in need_this_block().
NeilBrown [Thu, 24 Sep 2015 05:25:36 +0000 (15:25 +1000)]
md/raid5: don't index beyond end of array in need_this_block().

When need_this_block probably shouldn't be called when there
are more than 2 failed devices, we really don't want it to try
indexing beyond the end of the failed_num[] of fdev[] arrays.

So limit the loops to at most 2 iterations.

Reported-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.de>
9 years agoraid5: update analysis state for failed stripe
Shaohua Li [Fri, 18 Sep 2015 17:20:13 +0000 (10:20 -0700)]
raid5: update analysis state for failed stripe

handle_failed_stripe() makes the stripe fail, eg, all IO will return
with a failure, but it doesn't update stripe_head_state. Later
handle_stripe() has special handling for raid6 for handle_stripe_fill().
That check before handle_stripe_fill() doesn't skip the failed stripe
and we get a kernel crash in need_this_block.  This patch clear the
analysis state to make sure no functions wrongly called after
handle_failed_stripe()

Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agomd: wait for pending superblock updates before switching to read-only
NeilBrown [Thu, 24 Sep 2015 04:00:51 +0000 (14:00 +1000)]
md: wait for pending superblock updates before switching to read-only

If a superblock update is pending, wait for it to complete before
letting md_set_readonly() switch to readonly.
Otherwise we might lose important information about a device having
failed.

For external arrays, waiting for superblock updates can wait on
user-space, so in that case, just return an error.

Reported-and-tested-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
9 years agox86/mm: Set NX on gap between __ex_table and rodata
Stephen Smalley [Thu, 1 Oct 2015 13:04:22 +0000 (09:04 -0400)]
x86/mm: Set NX on gap between __ex_table and rodata

Unused space between the end of __ex_table and the start of
rodata can be left W+x in the kernel page tables.  Extend the
setting of the NX bit to cover this gap by starting from
text_end rather than rodata_start.

  Before:
  ---[ High Kernel Mapping ]---
  0xffffffff80000000-0xffffffff81000000          16M                               pmd
  0xffffffff81000000-0xffffffff81600000           6M     ro         PSE     GLB x  pmd
  0xffffffff81600000-0xffffffff81754000        1360K     ro                 GLB x  pte
  0xffffffff81754000-0xffffffff81800000         688K     RW                 GLB x  pte
  0xffffffff81800000-0xffffffff81a00000           2M     ro         PSE     GLB NX pmd
  0xffffffff81a00000-0xffffffff81b3b000        1260K     ro                 GLB NX pte
  0xffffffff81b3b000-0xffffffff82000000        4884K     RW                 GLB NX pte
  0xffffffff82000000-0xffffffff82200000           2M     RW         PSE     GLB NX pmd
  0xffffffff82200000-0xffffffffa0000000         478M                               pmd

  After:
  ---[ High Kernel Mapping ]---
  0xffffffff80000000-0xffffffff81000000          16M                               pmd
  0xffffffff81000000-0xffffffff81600000           6M     ro         PSE     GLB x  pmd
  0xffffffff81600000-0xffffffff81754000        1360K     ro                 GLB x  pte
  0xffffffff81754000-0xffffffff81800000         688K     RW                 GLB NX pte
  0xffffffff81800000-0xffffffff81a00000           2M     ro         PSE     GLB NX pmd
  0xffffffff81a00000-0xffffffff81b3b000        1260K     ro                 GLB NX pte
  0xffffffff81b3b000-0xffffffff82000000        4884K     RW                 GLB NX pte
  0xffffffff82000000-0xffffffff82200000           2M     RW         PSE     GLB NX pmd
  0xffffffff82200000-0xffffffffa0000000         478M                               pmd

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: <stable@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1443704662-3138-1-git-send-email-sds@tycho.nsa.gov
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agox86/kexec: Fix kexec crash in syscall kexec_file_load()
Lee, Chun-Yi [Tue, 29 Sep 2015 12:58:57 +0000 (20:58 +0800)]
x86/kexec: Fix kexec crash in syscall kexec_file_load()

The original bug is a page fault crash that sometimes happens
on big machines when preparing ELF headers:

    BUG: unable to handle kernel paging request at ffffc90613fc9000
    IP: [<ffffffff8103d645>] prepare_elf64_ram_headers_callback+0x165/0x260

The bug is caused by us under-counting the number of memory ranges
and subsequently not allocating enough ELF header space for them.
The bug is typically masked on smaller systems, because the ELF header
allocation is rounded up to the next page.

This patch modifies the code in fill_up_crash_elf_data() by using
walk_system_ram_res() instead of walk_system_ram_range() to correctly
count the max number of crash memory ranges. That's because the
walk_system_ram_range() filters out small memory regions that
reside in the same page, but walk_system_ram_res() does not.

Here's how I found the bug:

After tracing prepare_elf64_headers() and prepare_elf64_ram_headers_callback(),
the code uses walk_system_ram_res() to fill-in crash memory regions information
to the program header, so it counts those small memory regions that
reside in a page area.

But, when the kernel was using walk_system_ram_range() in
fill_up_crash_elf_data() to count the number of crash memory regions,
it filters out small regions.

I printed those small memory regions, for example:

  kexec: Get nr_ram ranges. vaddr=0xffff880077592258 paddr=0x77592258, sz=0xdc0

Based on the code in walk_system_ram_range(), this memory region
will be filtered out:

  pfn = (0x77592258 + 0x1000 - 1) >> 12 = 0x77593
  end_pfn = (0x77592258 + 0xfc0 -1 + 1) >> 12 = 0x77593
  end_pfn - pfn = 0x77593 - 0x77593 = 0  <=== if (end_pfn > pfn) is FALSE

So, the max_nr_ranges that's counted by the kernel doesn't include
small memory regions - causing us to under-allocate the required space.
That causes the page fault crash that happens in a later code path
when preparing ELF headers.

This bug is not easy to reproduce on small machines that have few
CPUs, because the allocated page aligned ELF buffer has more free
space to cover those small memory regions' PT_LOAD headers.

Signed-off-by: Lee, Chun-Yi <jlee@suse.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: kexec@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/1443531537-29436-1-git-send-email-jlee@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
9 years agodrm/dp/mst: add some defines for logical/physical ports
Dave Airlie [Thu, 1 Oct 2015 06:28:25 +0000 (16:28 +1000)]
drm/dp/mst: add some defines for logical/physical ports

This just removes the magic number.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/dp/mst: drop cancel work sync in the mstb destroy path (v2)
Dave Airlie [Wed, 30 Sep 2015 00:39:42 +0000 (10:39 +1000)]
drm/dp/mst: drop cancel work sync in the mstb destroy path (v2)

Since 9eb1e57f564d4e6e10991402726cc83fe0b9172f
drm/dp/mst: make sure mst_primary mstb is valid in work function

we validate the mstb structs in the work function, and doing
that takes a reference. So we should never get here with the
work function running using the mstb device, only if the work
function hasn't run yet or is running for another mstb.

So we don't need to sync the work here, this was causing
lockdep spew as below.

[  +0.000160] =============================================
[  +0.000001] [ INFO: possible recursive locking detected ]
[  +0.000002] 3.10.0-320.el7.rhel72.stable.backport.3.x86_64.debug #1 Tainted: G        W      ------------
[  +0.000001] ---------------------------------------------
[  +0.000001] kworker/4:2/1262 is trying to acquire lock:
[  +0.000001]  ((&mgr->work)){+.+.+.}, at: [<ffffffff810b29a5>] flush_work+0x5/0x2e0
[  +0.000007]
but task is already holding lock:
[  +0.000001]  ((&mgr->work)){+.+.+.}, at: [<ffffffff810b57e4>] process_one_work+0x1b4/0x710
[  +0.000004]
other info that might help us debug this:
[  +0.000001]  Possible unsafe locking scenario:

[  +0.000002]        CPU0
[  +0.000000]        ----
[  +0.000001]   lock((&mgr->work));
[  +0.000002]   lock((&mgr->work));
[  +0.000001]
 *** DEADLOCK ***

[  +0.000001]  May be due to missing lock nesting notation

[  +0.000002] 2 locks held by kworker/4:2/1262:
[  +0.000001]  #0:  (events_long){.+.+.+}, at: [<ffffffff810b57e4>] process_one_work+0x1b4/0x710
[  +0.000004]  #1:  ((&mgr->work)){+.+.+.}, at: [<ffffffff810b57e4>] process_one_work+0x1b4/0x710
[  +0.000003]
stack backtrace:
[  +0.000003] CPU: 4 PID: 1262 Comm: kworker/4:2 Tainted: G        W      ------------   3.10.0-320.el7.rhel72.stable.backport.3.x86_64.debug #1
[  +0.000001] Hardware name: LENOVO 20EGS0R600/20EGS0R600, BIOS GNET71WW (2.19 ) 02/05/2015
[  +0.000008] Workqueue: events_long drm_dp_mst_link_probe_work [drm_kms_helper]
[  +0.000001]  ffffffff82c26c90 00000000a527b914 ffff88046399bae8 ffffffff816fe04d
[  +0.000004]  ffff88046399bb58 ffffffff8110f47f ffff880461438000 0001009b840fc003
[  +0.000002]  ffff880461438a98 0000000000000000 0000000804dc26e1 ffffffff824a2c00
[  +0.000003] Call Trace:
[  +0.000004]  [<ffffffff816fe04d>] dump_stack+0x19/0x1b
[  +0.000004]  [<ffffffff8110f47f>] __lock_acquire+0x115f/0x1250
[  +0.000002]  [<ffffffff8110fd49>] lock_acquire+0x99/0x1e0
[  +0.000002]  [<ffffffff810b29a5>] ? flush_work+0x5/0x2e0
[  +0.000002]  [<ffffffff810b29ee>] flush_work+0x4e/0x2e0
[  +0.000002]  [<ffffffff810b29a5>] ? flush_work+0x5/0x2e0
[  +0.000004]  [<ffffffff81025905>] ? native_sched_clock+0x35/0x80
[  +0.000002]  [<ffffffff81025959>] ? sched_clock+0x9/0x10
[  +0.000002]  [<ffffffff810da1f5>] ? local_clock+0x25/0x30
[  +0.000002]  [<ffffffff8110dca9>] ? mark_held_locks+0xb9/0x140
[  +0.000003]  [<ffffffff810b4ed5>] ? __cancel_work_timer+0x95/0x160
[  +0.000002]  [<ffffffff810b4ee8>] __cancel_work_timer+0xa8/0x160
[  +0.000002]  [<ffffffff810b4fb0>] cancel_work_sync+0x10/0x20
[  +0.000007]  [<ffffffffa0160d17>] drm_dp_destroy_mst_branch_device+0x27/0x120 [drm_kms_helper]
[  +0.000006]  [<ffffffffa0163968>] drm_dp_mst_link_probe_work+0x78/0xa0 [drm_kms_helper]
[  +0.000002]  [<ffffffff810b5850>] process_one_work+0x220/0x710
[  +0.000002]  [<ffffffff810b57e4>] ? process_one_work+0x1b4/0x710
[  +0.000005]  [<ffffffff810b5e5b>] worker_thread+0x11b/0x3a0
[  +0.000003]  [<ffffffff810b5d40>] ? process_one_work+0x710/0x710
[  +0.000002]  [<ffffffff810beced>] kthread+0xed/0x100
[  +0.000003]  [<ffffffff810bec00>] ? insert_kthread_work+0x80/0x80
[  +0.000003]  [<ffffffff817121d8>] ret_from_fork+0x58/0x90

v2: add flush_work.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/dp/mst: split connector registration into two parts (v2)
Dave Airlie [Wed, 16 Sep 2015 07:55:23 +0000 (17:55 +1000)]
drm/dp/mst: split connector registration into two parts (v2)

In order to cache the EDID properly for tiled displays, we
need to retrieve it before we register the connector with
userspace, otherwise userspace can call get resources
and try and get the edid before we've even cached it.

This fixes some problems when hotplugging mst monitors,
with X/mutter running. As mutter seems to get 0 modes
for one of the monitors in the tile.

v2: fix warning in radeon
handle tile setting in cached path rather than
get edid path.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/dp/mst: update the link_address_sent before sending the link address (v3)
Dave Airlie [Sun, 6 Sep 2015 08:53:00 +0000 (18:53 +1000)]
drm/dp/mst: update the link_address_sent before sending the link address (v3)

Update the state before sending the msg to close it.

v2: reset value if return indicates we haven't send the msg.
v3: just clean the code up.
Pointed out by Adam J Richter on

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91481

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/dp/mst: fixup handling hotplug on port removal.
Dave Airlie [Wed, 16 Sep 2015 00:37:28 +0000 (10:37 +1000)]
drm/dp/mst: fixup handling hotplug on port removal.

output ports should always have a connector, unless
in the rare case connector allocation fails in the
driver.

In this case we only need to teardown the pdt,
and free the struct, and there is no need to
send a hotplug msg.

In the case were we add the port to the destroy
list we need to send a hotplug if we destroy
any connectors, so userspace knows to reprobe
stuff.

this patch also handles port->connector allocation
failing which should be a rare event, but makes
the code consistent.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
9 years agodrm/dp/mst: don't pass port into the path builder function
Dave Airlie [Wed, 16 Sep 2015 01:04:49 +0000 (11:04 +1000)]
drm/dp/mst: don't pass port into the path builder function

This is unnecessary and it makes it easier to see what is needed
from port.

also add blank line to make things nicer.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>