task_pt_regs() can return NULL for kernel threads, so add a check.
This fixes an oops at boot on ppc64.
Reported-and-Tested-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Tested-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: efault@gmx.de
Cc: htejun@gmail.com
Cc: linuxppc-dev@lists.ozlabs.org
Cc: tj@kernel.org
Cc: yangds.fnst@cn.fujitsu.com
Link: http://lkml.kernel.org/r/20160406215950.04bc3f0b@kryten
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The existing __get_user() implementation does not support fetching
64-bit values on 32-bit x86. Implement this in a way that does not
generate any incorrect warnings as cautioned by Russell King.
Test code available at:
http://www.kvack.org/~bcrl/x86_32-get_user.tar .
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The local_clock/cpu_clock functions were changed to prevent a double
identical test with sched_clock_cpu() when HAVE_UNSTABLE_SCHED_CLOCK
is set. That resulted in one line functions.
As these functions are in all the cases one line functions and in the
hot path, it is useful to specify them as static inline in order to
give a strong hint to the compiler.
After verification, it appears the compiler does not inline them
without this hint. Change those functions to static inline.
sched_clock_cpu() is called via the inlined local_clock()/cpu_clock()
functions from sched.h. So any module code including sched.h will
reference sched_clock_cpu(). Thus it must be exported with the
EXPORT_SYMBOL_GPL macro.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1460385514-14700-2-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
In case the HAVE_UNSTABLE_SCHED_CLOCK config is set, the cpu_clock() version
checks if sched_clock_stable() is not set and calls sched_clock_cpu(),
otherwise it calls sched_clock().
sched_clock_cpu() checks also if sched_clock_stable() is set and, if true,
calls sched_clock().
sched_clock() will be called in sched_clock_cpu() if sched_clock_stable() is
true.
Remove the duplicate test by directly calling sched_clock_cpu() and let the
static key act in this function instead.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1460385514-14700-1-git-send-email-daniel.lezcano@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This reverts commit cc8ed76938
("soc: mediatek: SCPSYS: Fix double enabling of regulators") [1].
This patch fixes mt8173-evb failing boot issue. With commit [1],
genpd state will not sync to real power domain state. So some
resources such as clocks and regulators may stay in a wrong state.
There is no regulator double enabling issue on mainline kernel, so
we can refert commit [1] safely.
Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
04633df0c4 ("x86/cpu: Call verify_cpu() after having entered long mode too")
added the call to verify_cpu() for sanitizing CPU configuration.
The latter uses the stack minimally and it can happen that we land in
startup_64() directly from a 64-bit bootloader. Then we want to use our
own, known good stack.
Do that.
APs don't need this as the trampoline sets up a stack for them.
Reported-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mika Penttilä <mika.penttila@nextfour.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1459434062-31055-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The DCU IP has distinct clock inputs for register access and the
pixel clocks, at least in some implementations. LS1021a seems to
use the same clock, therefore specify the same clock for "dcu"
and "pix".
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Both DSPI have signals SPIn_PCS[0:5] so in summary 6 chip-selects, not 5.
Fix that.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add gpio nodes for ls1021a platform dts file. The gpio
IP block of the ls1021a can be supported by the code
drivers/gpio/gpio-mpc8xxx.c.
The compatible "fsl,qoriq-gpio" is used by gpio driver:
drivers/gpio/gpio-mpc8xxx.c to implement general gpio
functionalities.
The chip-specific compatible "fsl,ls1021a-gpio" may be
used to fix potential gpio IP block errata or other
chip-specific gpio issues.
Signed-off-by: Liu Gang <Gang.Liu@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The vqmmc supply is not connected to bio supply on the BA16 module.
Hence remove vqmmc-supply property in usdhc3 node.
Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add SCFG MSI dts node and add msi-parent property to PCIe dts node
that points to the corresponding MSI node.
Signed-off-by: Minghuan Lian <Minghuan.Lian@nxp.com>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
According to Documentation/devicetree/bindings/net/fsl-fec.txt the polarity
of "phy-reset-gpios" is assumed to be active-low unless a separate property
"phy-reset-active-high" is available. So replace the inconsistent polarity
description to make the correct active-low reset behavior more obvious.
Signed-off-by: Soeren Moch <smoch@web.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit adds support for Rev. B of a Zodiac Inflight Innovations
development board, mainly intended for DSA and ARINC 429 development
work.
Signed-off-by: Cory Tusar <cory.tusar@pid1solutions.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add missing reg properties to AIPS bus and Cortex-A5's PMU unit.
This change avoids the following warnings:
Warning (unit_address_vs_reg): Node /soc/aips-bus@40000000 has a unit
name, but no reg property
Warning (unit_address_vs_reg): Node /soc/aips-bus@40080000 has a unit
name, but no reg property
Warning (unit_address_vs_reg): Node /soc/aips-bus@40080000/pmu@40089000
has a unit name, but no reg property
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The NAND flash memory populated on Colibri VF61 allows faster NAND
timings than the flash memory on VF50. Additionally, due to divider
limitations, VF61 did clock the flash even slower than VF50. Assign
the NFC clock in the module specific device trees vf500-colibri.dtsi
and vf610-colibri.dtsi respectively.
This increases raw read speed on Colibri VF61 by about 20%.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The Vybrid based Colibri modules provide a on-module PHY which is
connected to the second FEC instance FEC1. Since the on-module
Ethernet port is considered as primary ethernet interface, alias
fec1 as ethernet0. This also makes sure that the first MAC address
provided by the boot loader gets assigned to the FEC instance used
for the on-module PHY.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Introduce imx6sx-sdb-sai.dts so that it is possible to use the
SAI interface.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Document the 'fsl,sdma-event-remap' property and provide an example of
its usage.
Cc: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Property 'dma-source' is not used anywhere, nor it is documented, so
let's just get rid of it.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
According to sdma_peripheral_type in include/linux/platform_data/dma-imx.h
IMX_DMATYPE_SAI corresponds to index 24, so fix it accordingly.
Suggested-by: Zidan Wang <zidan.wang@nxp.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
pwm2 is provided on the BA16 Q7 module, but is not used on any
of the current configurations. However, future platforms may
utilize this device, so we are simply disabling the node rather
than removing it completely.
Signed-off-by: Justin Waters <justin.waters@timeys.com>
Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
It is preferred to use the panel compatible string rather than passing the
LCD timings in the device tree.
So pass the "hannstar,hsd100pxn1" compatible string to describe
the LVDS panel on this board.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This baseboard can be used with all TX6 SoMs, but only a certain set
of combinations can be ordered by default. Add support for these
combinations in mainline, so that users can easily adopt their own
combination of SoM and baseboard themselves.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
We can use the new pin/lazy unpin API for simplicity
and more performance in the execlist submission paths.
v2:
* Fix error handling and convert more users.
* Compact some names for readability.
v3:
* intel_lr_context_free was not unpinning.
* Special case for GPU reset which otherwise unbalances
the HWS object pages pin count by running the engine
initialization only (not destructors).
v4:
* Rebased on top of hws setup/init split.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1460472042-1998-1-git-send-email-tvrtko.ursulin@linux.intel.com
[tursulin: renames: s/hwd/hws/, s/obj_addr/vaddr/]
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Add support for the following i.MX6 based modules from Ka-Ro
electronics GmbH:
TX6S-8034:
Processor Freescale i.MX 6 Solo, 800MHz
RAM 256MiB DDR3 SDRAM
ROM 128MiB NAND Flash
Power supply Single 3.1V to 5.5V
Size 31mm SO-DIMM
Temp. Range industrial grade (-40°C/-25°C to 105°C Tj)
TX6S-8035:
Processor Freescale i.MX 6 Solo, 800MHz
RAM 512MiB DDR3 SDRAM
ROM 4GiB eMMC
Power supply Single 3.1V to 5.5V
Size 31mm SO-DIMM
Temp. Range industrial grade (-40°C/-25°C to 105°C Tj)
TX6U-8033:
Processor Freescale i.MX 6 Dual Lite, 800MHz
RAM 1GiB DDR3 SDRAM
ROM 4GiB eMMC
Power supply Single 3.1V to 5.5V
Size 31mm SO-DIMM
Temp. Range industrial grade (-40°C/-25°C to 105°C Tj)
TX6Q-1036:
Processor Freescale i.MX 6Quad, 1GHz
RAM 1GB DDR3 SDRAM 64-bit
ROM 8GiB eMMC
Power supply Single 3.1V to 5.5V
Size 31mm SO-DIMM
Temp. Range Extended Consumer Grade (-20°C to 105°C Tj)
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add missing pinctrl for the RTS/CTS lines to uart1 and set the
fsl,uart-has-rtscts property on all UARTs to enable support for HW
handshake.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Move the pinctrl setting for the board LED from the hoggrp node
to a separate node referenced by the LED driver, so that the pin is
free to be used for different purpose when the LED driver is disabled.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
DT maintainers don't like the 'simple-bus' container around the
regulator nodes. So remove it.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Based on i.MX6 Quad Plus with 4GB of RAM.
https://boundarydevices.com/product/nitrogen6max/
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add mdio node and an appropriate PHY configuration to enable use of
the PHY interrupt for link status changes.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Remove the function node around the pinctrl nodes that was obsoleted
by commit 5fcdf6a7ed ("pinctrl: imx: Allow parsing DT without
function nodes"), we can save this container node.
Also move the iomux node to the bottom of the file to improve
readability of the file.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The spidev driver doesn't like to be instantiated via a naked 'spidev'
compatible, though it is very convenient to invoke it this way without
a dedicated SPI device for basic functional testing.
Disable the spi node by default to silence the WARN_ON() from the
spidev driver, but leave the configuration intact otherwise.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add an empty line between properties and subnode in the clocks node.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
GPLv2-only devicetrees make reuse difficult for software components
licensed under a different license.
The consensus is that a GPL/X11 dual-license should allow all necessary
uses, so relicense the imx6*-tx6* files to this combination.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
With SION set the level on such a pin is reported to the UART. So for
example when the CS5 pin is configured for GPIO mode and the level
changes this triggers an RTS interrupt on uart5.
Adding some severity to this issue: The imx uart driver currently
doesn't handle correctly irqs for changes on RI and DCD which are
enabled automatically when the respective UART is driven in DTE mode
(that is, has the fsl,dte-mode property set in the device tree). This
results in a stuck machine because the irq isn't cleared and so stalls
the CPU.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Apart from a few additions this also contains two fixes where the daisy
chain input selection register was missing. Moreover dropped _MUX from
some pins for consistency.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Utilize the new PCIe Tx configuration to properly support the correct
values.
Signed-off-by: Justin Waters <justin.waters@timesys.com>
Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The TXUL-0010/-0011 modules are Computers On Module manufactured by
Ka-Ro electronics GmbH with the following characteristics:
Processor Freescale i.MX 6UltraLite MCIMX6G2, 528 MHz
RAM 256MB 16-bit DDR3 SDRAM
ROM 128MB NAND Flash (TXUL-0010) / 4GB eMMC (TXUL-0011)
Power supply Single 3.3 to 5V
Size 26mm SO-DIMM
Temp. Range -40°C to 85°C
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Split the hardware status page into setup and initialisation,
where setup means setting up the driver state to support the
engine, and initialization means programming the hardware
with the before set up state.
This way the design matches the design of the engine setup/init
code which is split in the same fashion and it enables the
stages to be used in a balanced fashion (engine setup - hws
setup, engine init - hws init).
This will enable the upcoming improvements to slot in without
any kludges on the GPU reset path.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
get_bios_ebda_length() uses min_t() without including linux/kernel.h.
This may result in build errors with some configurations. Since the
function is not used anywhere in the kernel, let's just drop it.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Waychison <mikew@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1459558314-5625-1-git-send-email-linux@roeck-us.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Enable dcu node which is used by the DCU DRM driver. Assign the 5.7"
EDT panel with VGA resolution which Toradex sells often with the
evaluation board.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add the dcu and tcon nodes to enable the Display Controller Unit
and Timing Controller in Vybrid's SoC level device-tree file.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Based on i.MX7 Dual with 1GB of RAM.
https://boundarydevices.com/product/nitrogen7/
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add the device nodes for the i.MX7 FlexCAN buses.
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Add the device node for the i.MX7 eLCDIF interface.
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
