platform/kernel/linux-rpi.git
5 years agothermal: rcar_gen3_thermal: Fix to show correct trip points number
Jiada Wang [Thu, 9 May 2019 09:09:17 +0000 (18:09 +0900)]
thermal: rcar_gen3_thermal: Fix to show correct trip points number

Currently after store trip points number in 'ret', it is overwritten
afterwards, this cause incorrect trip point number always be shown in
the debug information after register of each thermal zone.

This patch fix this issue by moving get of trip number to
end of thermal zone registration.

Fixes: 6269e9f790e8d ("thermal: rcar_gen3_thermal: Register hwmon sysfs interface")
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: rcar_thermal: update calculation formula for R-Car Gen3 SoCs
Yoshihiro Kaneko [Wed, 8 May 2019 11:08:45 +0000 (13:08 +0200)]
thermal: rcar_thermal: update calculation formula for R-Car Gen3 SoCs

Update calculation for the R-Car Gen3 and RZ/G2 SoCs which have a
thermal IP block controlled by this driver. That is the:

* R-Car D3 (r8a77995)
* R-Car E2 (r8a77990)
* R-Car V3M (r8a77970)
* RZ/G2E (r8a774c0)

The calculation update is as documented in the R-Car Gen3 User's Manual,
v1.50 Nov 2018:

- When CTEMP is less than 24
   T = CTEMP[5:0] * 5.5 - 72
- When CTEMP is equal to/greater than 24
   T = CTEMP[5:0] * 5 - 60

This was inspired by a patch in the BSP by Van Do <van.do.xw@renesas.com>

Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: cpu_cooling: Actually trace CPU load in thermal_power_cpu_get_power
Matthias Kaehlcke [Thu, 2 May 2019 18:32:38 +0000 (11:32 -0700)]
thermal: cpu_cooling: Actually trace CPU load in thermal_power_cpu_get_power

The CPU load values passed to the thermal_power_cpu_get_power
tracepoint are zero for all CPUs, unless, unless the
thermal_power_cpu_limit tracepoint is enabled too:

  irq/41-rockchip-98    [000] ....   290.972410: thermal_power_cpu_get_power:
  cpus=0000000f freq=1800000 load={{0x0,0x0,0x0,0x0}} dynamic_power=4815

vs

  irq/41-rockchip-96    [000] ....    95.773585: thermal_power_cpu_get_power:
  cpus=0000000f freq=1800000 load={{0x56,0x64,0x64,0x5e}} dynamic_power=4959
  irq/41-rockchip-96    [000] ....    95.773596: thermal_power_cpu_limit:
  cpus=0000000f freq=408000 cdev_state=10 power=416

There seems to be no good reason for omitting the CPU load information
depending on another tracepoint. My guess is that the intention was to
check whether thermal_power_cpu_get_power is (still) enabled, however
'load_cpu != NULL' already indicates that it was at least enabled when
cpufreq_get_requested_power() was entered, there seems little gain
from omitting the assignment if the tracepoint was just disabled, so
just remove the check.

Fixes: 6828a4711f99 ("thermal: add trace events to the power allocator governor")
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Javi Merino <javi.merino@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: rockchip: Support the PX30 SoC in thermal driver
Elaine Zhang [Tue, 30 Apr 2019 10:09:46 +0000 (18:09 +0800)]
thermal: rockchip: Support the PX30 SoC in thermal driver

PX30 SOC has two Temperature Sensors for CPU and GPU.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodt-bindings: rockchip-thermal: Support the PX30 SoC compatible
Elaine Zhang [Tue, 30 Apr 2019 10:09:45 +0000 (18:09 +0800)]
dt-bindings: rockchip-thermal: Support the PX30 SoC compatible

Add a new compatible for thermal founding on PX30 SoCs.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: rockchip: fix up the tsadc pinctrl setting error
Elaine Zhang [Tue, 30 Apr 2019 10:09:44 +0000 (18:09 +0800)]
thermal: rockchip: fix up the tsadc pinctrl setting error

Explicitly use the pinctrl to set/unset the right mode
instead of relying on the pinctrl init mode.
And it requires setting the tshut polarity before select pinctrl.

When the temperature sensor mode is set to 0, it will automatically
reset the board via the Clock-Reset-Unit (CRU) if the over temperature
threshold is reached. However, when the pinctrl initializes, it does a
transition to "otp_out" which may lead the SoC restart all the time.

"otp_out" IO may be connected to the RESET circuit on the hardware.
If the IO is in the wrong state, it will trigger RESET.
(similar to the effect of pressing the RESET button)
which will cause the soc to restart all the time.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: broadcom: Remove ACPI support
Srinath Mannam [Mon, 29 Apr 2019 16:55:29 +0000 (22:25 +0530)]
thermal: broadcom: Remove ACPI support

Unlike DT framework, thermal-zones and its parameters can't be parsed
using ACPI framework. So that ACPI support is removed in this driver.

Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Reported-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: Fix build error of missing devm_ioremap_resource on UM
Talel Shenhar [Mon, 29 Apr 2019 09:47:36 +0000 (12:47 +0300)]
thermal: Fix build error of missing devm_ioremap_resource on UM

The devres.o gets linked if HAS_IOMEM is present so on ARCH=um
allyesconfig (COMPILE_TEST) failed on many files with:

drivers/thermal/thermal_mmio.o:
In function 'thermal_mmio_probe':thermal_mmio.c:(.text+0xe1):
undefined reference to `devm_ioremap_resource'

The users of devm_ioremap_resource() which are compile-testable
should depend on HAS_IOMEM.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Talel Shenhar <talel@amazon.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal/drivers/cpu_cooling: Remove pointless field
Daniel Lezcano [Sun, 28 Apr 2019 09:51:05 +0000 (11:51 +0200)]
thermal/drivers/cpu_cooling: Remove pointless field

The structure cpufreq_cooling_device provides a backpointer to the thermal
device but this one is used for a trace and to unregister. For the trace,
we don't really need this field and the unregister function as the same
pointer passed as parameter. Remove it.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal/drivers/cpu_cooling: Add Software Package Data Exchange (SPDX)
Daniel Lezcano [Sun, 28 Apr 2019 09:51:04 +0000 (11:51 +0200)]
thermal/drivers/cpu_cooling: Add Software Package Data Exchange (SPDX)

For license auditing purpose, let's add the SPDX tag.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal/drivers/cpu_cooling: Fixup the header and copyright
Daniel Lezcano [Sun, 28 Apr 2019 09:51:03 +0000 (11:51 +0200)]
thermal/drivers/cpu_cooling: Fixup the header and copyright

The copyright format does not conform to the format requested by
Linaro: https://wiki.linaro.org/Copyright

Fix it.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal/drivers/cpu_cooling: Remove pointless test in power2state()
Daniel Lezcano [Wed, 24 Apr 2019 20:56:09 +0000 (22:56 +0200)]
thermal/drivers/cpu_cooling: Remove pointless test in power2state()

When the static power computation was removed, the test with the power
being negative was not removed. However, the substraction which was
responsible of the negative value was removed and the variable is now
an u32. A double reason to remove the test which does not make sense.

Fixes: 84fe2cab48590 ("cpu_cooling: Drop static-power related stuff")
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: rcar_gen3_thermal: disable interrupt in .remove
Jiada Wang [Wed, 24 Apr 2019 05:11:45 +0000 (14:11 +0900)]
thermal: rcar_gen3_thermal: disable interrupt in .remove

Currently IRQ remains enabled after .remove, later if device is probed,
IRQ is requested before .thermal_init, this may cause IRQ function be
called before device is initialized.

this patch disables interrupt in .remove, to ensure irq function
only be called after device is fully initialized.

Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: rcar_gen3_thermal: fix interrupt type
Jiada Wang [Wed, 24 Apr 2019 05:11:44 +0000 (14:11 +0900)]
thermal: rcar_gen3_thermal: fix interrupt type

Currently IRQF_SHARED type interrupt line is allocated, but it
is not appropriate, as the interrupt line isn't shared between
different devices, instead IRQF_ONESHOT is the proper type.

By changing interrupt type to IRQF_ONESHOT, now irq handler is
no longer needed, as clear of interrupt status can be done in
threaded interrupt context.

Because IRQF_ONESHOT type interrupt line is kept disabled until
the threaded handler has been run, so there is no need to protect
read/write of REG_GEN3_IRQSTR with lock.

Fixes: 7d4b269776ec6 ("enable hardware interrupts for trip points")
Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: Introduce devm_thermal_of_cooling_device_register
Guenter Roeck [Thu, 18 Apr 2019 19:58:15 +0000 (12:58 -0700)]
thermal: Introduce devm_thermal_of_cooling_device_register

thermal_of_cooling_device_register() and thermal_cooling_device_register()
are typically called from driver probe functions, and
thermal_cooling_device_unregister() is called from remove functions. This
makes both a perfect candidate for device managed functions.

Introduce devm_thermal_of_cooling_device_register(). This function can
also be used to replace thermal_cooling_device_register() by passing a NULL
pointer as device node. The new function requires both struct device *
and struct device_node * as parameters since the struct device_node *
parameter is not always identical to dev->of_node.

Don't introduce a device managed remove function since it is not needed
at this point.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodt-bindings: thermal: generic-adc: make lookup-table optional
Jean-Francois Dagenais [Thu, 18 Apr 2019 16:37:33 +0000 (12:37 -0400)]
dt-bindings: thermal: generic-adc: make lookup-table optional

Update binding description making lookup-table optional.

Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: generic-adc: make lookup table optional
Jean-Francois Dagenais [Thu, 18 Apr 2019 16:37:32 +0000 (12:37 -0400)]
thermal: generic-adc: make lookup table optional

Certain ADC channels, such as the xilinx-ams temperature channels, give
milliCelcius already when read with iio_read_channel_processed.

Rather than having to provide a 1:1 dummy lookup table, simply allow to
bypass the mechanism.

Signed-off-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: qoriq: Remove unnecessary DT node is NULL check
Andrey Smirnov [Sat, 13 Apr 2019 08:27:37 +0000 (01:27 -0700)]
thermal: qoriq: Remove unnecessary DT node is NULL check

It's impossible to use this driver outside of Device Tree, so if the
probe function is called, the dev.of_node is guaranteed to not be NULL
and guarding against that is pointless. Drop it.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Angus Ainslie (Purism) <angus@akkea.ca>
Cc: linux-imx@nxp.com
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: Introduce Amazon's Annapurna Labs Thermal Driver
Talel Shenhar [Thu, 11 Apr 2019 10:22:48 +0000 (13:22 +0300)]
thermal: Introduce Amazon's Annapurna Labs Thermal Driver

This is a generic thermal driver for simple MMIO sensors, of which
amazon,al-thermal is one.

This device uses a single MMIO transaction to read the temperature and
report it to the thermal subsystem.

Signed-off-by: Talel Shenhar <talel@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodt-bindings: thermal: al-thermal: Add binding documentation
Talel Shenhar [Thu, 11 Apr 2019 10:22:47 +0000 (13:22 +0300)]
dt-bindings: thermal: al-thermal: Add binding documentation

Add thermal binding documentation for Amazon's Annapurna Labs Thermal
Sensor.

Signed-off-by: Talel Shenhar <talel@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: rcar_gen3_thermal: Fix init value of IRQCTL register
Hoan Nguyen An [Wed, 27 Mar 2019 09:03:18 +0000 (18:03 +0900)]
thermal: rcar_gen3_thermal: Fix init value of IRQCTL register

Fix setting value for IRQCTL register. We are setting the last 6 bits
of (IRQCTL) to be 1 (0x3f), this is only suitable for H3ES1.*, according
to Hardware manual values 1 are "setting prohibited" for Gen3.

Signed-off-by: Hoan Nguyen An <na-hoan@jinso.co.jp>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Move calibration constants to header file
Amit Kucheria [Wed, 20 Mar 2019 13:18:03 +0000 (18:48 +0530)]
drivers: thermal: tsens: Move calibration constants to header file

This will allow calibration routines to correctly include the constants
from anywhere and allow more code sharing.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Add generic support for TSENS v1 IP
Amit Kucheria [Wed, 20 Mar 2019 13:18:00 +0000 (18:48 +0530)]
drivers: thermal: tsens: Add generic support for TSENS v1 IP

qcs404 has a single TSENS IP block with 10 sensors. It uses version 1.4
of the TSENS IP, functionality for which is encapsulated inside the
qcom,tsens-v1 compatible.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodt: thermal: tsens: Add bindings for qcs404
Amit Kucheria [Wed, 20 Mar 2019 13:17:59 +0000 (18:47 +0530)]
dt: thermal: tsens: Add bindings for qcs404

qcs404 uses v1 of the TSENS IP block. Create a fallback DT property
"qcom,tsens-v1" to gather common code

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Common get_temp() learns to do ADC conversion
Amit Kucheria [Wed, 20 Mar 2019 13:17:58 +0000 (18:47 +0530)]
drivers: thermal: tsens: Common get_temp() learns to do ADC conversion

get_temp() learns to return temperature regardless of whether it is
returned as ADC code or direct temperature.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Move get_temp_tsens_v2 to allow sharing
Amit Kucheria [Wed, 20 Mar 2019 13:17:57 +0000 (18:47 +0530)]
drivers: thermal: tsens: Move get_temp_tsens_v2 to allow sharing

Just rename the function and move it to allow code sharing with future
versions of TSENS IP

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: simplify get_temp_tsens_v2 routine
Amit Kucheria [Wed, 20 Mar 2019 13:17:56 +0000 (18:47 +0530)]
drivers: thermal: tsens: simplify get_temp_tsens_v2 routine

The current implementation is based on an algorithm published in the
docs. Instead of reading the temperature thrice w/o any explanation,
improve the algorithm.

This will become the basis for a common get_temp routine in the future.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Introduce IP-specific max_sensor count
Amit Kucheria [Wed, 20 Mar 2019 13:17:55 +0000 (18:47 +0530)]
drivers: thermal: tsens: Introduce IP-specific max_sensor count

The IP can support 'm' sensors while the platform can enable 'n' sensors
of the 'm' where n <= m.

Track maximum sensors supported by the IP so that we can correctly track
what subset of the sensors are supported on the platform.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: change data type for sensor IDs
Amit Kucheria [Wed, 20 Mar 2019 13:17:54 +0000 (18:47 +0530)]
drivers: thermal: tsens: change data type for sensor IDs

The IDs cannot be negative, fix the data type.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Add new operation to check if a sensor is enabled
Amit Kucheria [Wed, 20 Mar 2019 13:17:53 +0000 (18:47 +0530)]
drivers: thermal: tsens: Add new operation to check if a sensor is enabled

is_sensor_enabled() checks if the sensors are enabled on this platform.
It is possible that the SoC might choose not to enable all the sensors
that the IP block is capable of supporting.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Don't print error message on -EPROBE_DEFER
Amit Kucheria [Wed, 20 Mar 2019 13:17:52 +0000 (18:47 +0530)]
drivers: thermal: tsens: Don't print error message on -EPROBE_DEFER

We print a calibration failure message on -EPROBE_DEFER from
nvmem/qfprom as follows:
[    3.003090] qcom-tsens 4a9000.thermal-sensor: version: 1.4
[    3.005376] qcom-tsens 4a9000.thermal-sensor: tsens calibration failed
[    3.113248] qcom-tsens 4a9000.thermal-sensor: version: 1.4

This confuses people when, in fact, calibration succeeds later when
nvmem/qfprom device is available. Don't print this message on a
-EPROBE_DEFER.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Save reference to the device pointer and use it
Amit Kucheria [Wed, 20 Mar 2019 13:17:51 +0000 (18:47 +0530)]
drivers: thermal: tsens: Save reference to the device pointer and use it

Code cleanup making it easier to read

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Introduce reg_fields to deal with register description
Amit Kucheria [Wed, 20 Mar 2019 13:17:50 +0000 (18:47 +0530)]
drivers: thermal: tsens: Introduce reg_fields to deal with register description

As we add support for newer versions of the TSENS IP, the current
approach isn't scaling because registers and bitfields get moved around,
requiring platform-specific hacks in the code. By moving to regmap, we
can hide the register level differences away from the code.

Define a common set of registers and bit-fields that we care about
across the various tsens IP versions.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Merge tsens-8974 into tsens-v0_1
Amit Kucheria [Wed, 20 Mar 2019 13:17:49 +0000 (18:47 +0530)]
drivers: thermal: tsens: Merge tsens-8974 into tsens-v0_1

8974 and 8916 have the same version of the TSENS IP. Merge the files to
allow for better code reuse.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Rename constants to prepare to merge with tsens-8974
Amit Kucheria [Wed, 20 Mar 2019 13:17:48 +0000 (18:47 +0530)]
drivers: thermal: tsens: Rename constants to prepare to merge with tsens-8974

Some #defines in tsens-v_0_1.c clash with those in tsens-8974.c. Prefix
them with 8916 to avoid the clash so we can merge the two files.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Rename tsens-8916 to prepare to merge with tsens-8974
Amit Kucheria [Wed, 20 Mar 2019 13:17:47 +0000 (18:47 +0530)]
drivers: thermal: tsens: Rename tsens-8916 to prepare to merge with tsens-8974

8916 and 8974 use v0.1.0 of the TSENS IP. Rename tsens-8916 to prepare
it for merging with tsens-8974 in a later commit.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Function prototypes should have argument names
Amit Kucheria [Wed, 20 Mar 2019 13:17:46 +0000 (18:47 +0530)]
drivers: thermal: tsens: Function prototypes should have argument names

check_patch complains a lot as follows:

WARNING: function definition argument 'struct tsens_priv *' should also have an identifier name
+       int (*init)(struct tsens_priv *);

Fix it.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Use consistent names for variables
Amit Kucheria [Wed, 20 Mar 2019 13:17:45 +0000 (18:47 +0530)]
drivers: thermal: tsens: Use consistent names for variables

tsens_get_temp() uses the name 'data' for the void pointer, use the same
in tsens_get_trend() for consistency.

Remove a stray space while we're at it.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Rename variable tmdev
Amit Kucheria [Wed, 20 Mar 2019 13:17:44 +0000 (18:47 +0530)]
drivers: thermal: tsens: Rename variable tmdev

tmdev seems to imply that this is a device pointer when in fact it is
just private platform data for each tsens device. Rename it to priv
improve code readability.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Rename tsens_device
Amit Kucheria [Wed, 20 Mar 2019 13:17:43 +0000 (18:47 +0530)]
drivers: thermal: tsens: Rename tsens_device

Rename to tsens_priv to denote that it is private data for each tsens
instance.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Rename tsens_data
Amit Kucheria [Wed, 20 Mar 2019 13:17:42 +0000 (18:47 +0530)]
drivers: thermal: tsens: Rename tsens_data

Rename to tsens_plat_data to denote that it is platform-data passed in
at compile-time.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: tsens: Document the data structures
Amit Kucheria [Wed, 20 Mar 2019 13:17:41 +0000 (18:47 +0530)]
drivers: thermal: tsens: Document the data structures

Describe how the TSENS device and the various sensors connected to it
are described in the driver

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: stm32: simplify getting .driver_data
Wolfram Sang [Tue, 19 Mar 2019 16:36:35 +0000 (17:36 +0100)]
thermal: stm32: simplify getting .driver_data

We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agodrivers: thermal: Kconfig: pedantic cleanups
Enrico Weigelt, metux IT consult [Wed, 6 Mar 2019 22:05:24 +0000 (23:05 +0100)]
drivers: thermal: Kconfig: pedantic cleanups

Formatting of Kconfig files doesn't look so pretty, so just
take damp cloth and clean it up.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agoof: thermal: Improve print information
Yangtao Li [Sun, 24 Feb 2019 07:10:58 +0000 (02:10 -0500)]
of: thermal: Improve print information

Define pr_fmt macro to add a prefix to the message,
this can make the thermal log better recognized.

Before:

[    0.602672] nfc: nfc_init: NFC Core ver 0.1
[    0.602828] NET: Registered protocol family 39
[    0.603435] clocksource: Switched to clocksource mct-frc
[    0.746216] failed to build thermal zone cpu-thermal: -22
[    0.746451] NET: Registered protocol family 2

After:

[    0.602804] NET: Registered protocol family 39
[    0.603463] clocksource: Switched to clocksource mct-frc
[    0.746309] thermal_sys: failed to build thermal zone cpu-thermal: -22
[    0.746545] NET: Registered protocol family 2

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: tegra: enable OC hw throttle
Wei Ni [Thu, 21 Feb 2019 10:18:47 +0000 (18:18 +0800)]
thermal: tegra: enable OC hw throttle

Parse Over Current settings from DT and program them to
generate interrupts. Also enable hw throttling whenever
there are OC events. Log the OC events as debug messages.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agoof: Add bindings of OC hw throttle for Tegra soctherm
Wei Ni [Thu, 21 Feb 2019 10:18:46 +0000 (18:18 +0800)]
of: Add bindings of OC hw throttle for Tegra soctherm

Add OC HW throttle configuration for soctherm in DT.
It is used to describe the OCx throttle events.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: tegra: add support for EDP IRQ
Wei Ni [Thu, 21 Feb 2019 10:18:44 +0000 (18:18 +0800)]
thermal: tegra: add support for EDP IRQ

Add support to generate OC (over-current) interrupts to
indicate the OC event and print out alarm messages.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: tegra: add set_trips functionality
Wei Ni [Thu, 21 Feb 2019 10:18:43 +0000 (18:18 +0800)]
thermal: tegra: add set_trips functionality

Implement set_trips ops to set passive trip points.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: tegra: add support for thermal IRQ
Wei Ni [Thu, 21 Feb 2019 10:18:42 +0000 (18:18 +0800)]
thermal: tegra: add support for thermal IRQ

Support to generate an interrupt when the temperature
crosses a programmed threshold and notify the thermal framework.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: tegra: add support for gpu hw-throttle
Wei Ni [Thu, 21 Feb 2019 10:18:40 +0000 (18:18 +0800)]
thermal: tegra: add support for gpu hw-throttle

Add support to trigger pulse skippers on the GPU
when a HOT trip point is triggered. The pulse skippers
can be signalled to throttle at low, medium and high
depths\levels.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agoof: Add bindings of gpu hw throttle for Tegra soctherm
Wei Ni [Thu, 21 Feb 2019 10:18:39 +0000 (18:18 +0800)]
of: Add bindings of gpu hw throttle for Tegra soctherm

Add "nvidia,gpu-throt-level" property to set gpu hw
throttle level.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agothermal: tegra: support hw and sw shutdown
Wei Ni [Thu, 21 Feb 2019 10:18:37 +0000 (18:18 +0800)]
thermal: tegra: support hw and sw shutdown

Currently the critical trip points in thermal framework are the only
way to specify a temperature at which HW should shutdown. This is
insufficient for certain platforms which would want an orderly
software shutdown in addition to HW shutdown.

This change support to parse "nvidia, thermtrips" property,
it allows soctherm DT to specify thermtrip temperatures so that
critical trip points framework can be used for doing software
shutdown.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agoof: Add bindings of thermtrip for Tegra soctherm
Wei Ni [Thu, 21 Feb 2019 10:18:36 +0000 (18:18 +0800)]
of: Add bindings of thermtrip for Tegra soctherm

Add optional property "nvidia,thermtrips".
If present, these trips will be used as HW shutdown trips,
and critical trips will be used as SW shutdown trips.

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
5 years agoLinux 5.1-rc7
Linus Torvalds [Mon, 29 Apr 2019 00:04:13 +0000 (17:04 -0700)]
Linux 5.1-rc7

5 years agoMerge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Sun, 28 Apr 2019 17:50:57 +0000 (10:50 -0700)]
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:
 "A small number of ARM fixes

   - Fix function tracer and unwinder dependencies so that we don't end
     up building kernels that will crash

   - Fix ARMv7M nommu initialisation (missing register initialisation)

   - Fix EFI decompressor entry (ensuring barrier instructions are
     enabled prior to use)"

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8857/1: efi: enable CP15 DMB instructions before cleaning the cache
  ARM: 8856/1: NOMMU: Fix CCR register faulty initialization when MPU is disabled
  ARM: fix function graph tracer and unwinder dependencies

5 years agoMerge tag 'powerpc-5.1-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 28 Apr 2019 17:43:15 +0000 (10:43 -0700)]
Merge tag 'powerpc-5.1-6' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "A one-liner to make our Radix MMU support depend on HUGETLB_PAGE. We
  use some of the hugetlb inlines (eg. pud_huge()) when operating on the
  linear mapping and if they're compiled into empty wrappers we can
  corrupt memory.

  Then two fixes to our VFIO IOMMU code. The first is not a regression
  but fixes the locking to avoid a user-triggerable deadlock.

  The second does fix a regression since rc1, and depends on the first
  fix. It makes it possible to run guests with large amounts of memory
  again (~256GB).

  Thanks to Alexey Kardashevskiy"

* tag 'powerpc-5.1-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm_iommu: Allow pinning large regions
  powerpc/mm_iommu: Fix potential deadlock
  powerpc/mm/radix: Make Radix require HUGETLB_PAGE

5 years agoMerge tag 'for-linus-20190428' of git://git.kernel.dk/linux-block
Linus Torvalds [Sun, 28 Apr 2019 17:06:32 +0000 (10:06 -0700)]
Merge tag 'for-linus-20190428' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A set of io_uring fixes that should go into this release. In
  particular, this contains:

   - The mutex lock vs ctx ref count fix (me)

   - Removal of a dead variable (me)

   - Two race fixes (Stefan)

   - Ring head/tail condition fix for poll full SQ detection (Stefan)"

* tag 'for-linus-20190428' of git://git.kernel.dk/linux-block:
  io_uring: remove 'state' argument from io_{read,write} path
  io_uring: fix poll full SQ detection
  io_uring: fix race condition when sq threads goes sleeping
  io_uring: fix race condition reading SQ entries
  io_uring: fail io_uring_register(2) on a dying io_uring instance

5 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Sun, 28 Apr 2019 17:00:45 +0000 (10:00 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "One core bug fix and a few driver ones

   - FRWR memory registration for hfi1/qib didn't work with with some
     iovas causing a NFSoRDMA failure regression due to a fix in the NFS
     side

   - A command flow error in mlx5 allowed user space to send a corrupt
     command (and also smash the kernel stack we've since learned)

   - Fix a regression and some bugs with device hot unplug that was
     discovered while reviewing Andrea's patches

   - hns has a failure if the user asks for certain QP configurations"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/hns: Bugfix for mapping user db
  RDMA/ucontext: Fix regression with disassociate
  RDMA/mlx5: Use rdma_user_map_io for mapping BAR pages
  RDMA/mlx5: Do not allow the user to write to the clock page
  IB/mlx5: Fix scatter to CQE in DCT QP creation
  IB/rdmavt: Fix frwr memory registration

5 years agoMerge tag 'dmaengine-fix-5.1-rc7' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Sun, 28 Apr 2019 16:45:18 +0000 (09:45 -0700)]
Merge tag 'dmaengine-fix-5.1-rc7' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:

 - fix for wrong register use in mediatek driver

 - fix in sh driver for glitch is tx_status and treating 0 a valid
   residue for cyclic

 - fix in bcm driver for using right memory allocation flag

* tag 'dmaengine-fix-5.1-rc7' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: mediatek-cqdma: fix wrong register usage in mtk_cqdma_start
  dmaengine: sh: rcar-dmac: Fix glitch in dmaengine_tx_status
  dmaengine: sh: rcar-dmac: With cyclic DMA residue 0 is valid
  dmaengine: bcm2835: Avoid GFP_KERNEL in device_prep_slave_sg

5 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Sat, 27 Apr 2019 23:27:02 +0000 (16:27 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:
 "Just a couple of fixups for Synaptics RMI4 driver and allowing
  snvs_pwrkey to be selected on more boards"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: synaptics-rmi4 - write config register values to the right offset
  Input: synaptics-rmi4 - fix possible double free
  Input: snvs_pwrkey - make it depend on ARCH_MXC

5 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 27 Apr 2019 17:21:29 +0000 (10:21 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:

 - Fix an early boot crash in the RSDP parsing code by effectively
   turning off the parsing call - we ran out of time but want to fix the
   regression. The more involved fix is being worked on.

 - Fix a crash that can trigger in the kmemlek code.

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Fix a crash with kmemleak_scan()
  x86/boot: Disable RSDP parsing temporarily

5 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 27 Apr 2019 17:18:40 +0000 (10:18 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:
 "Fix a division by zero bug that can trigger in the NUMA placement
  code"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/numa: Fix a possible divide-by-zero

5 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 27 Apr 2019 16:41:14 +0000 (09:41 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fix from Ingo Molnar:
 "A cstate event enumeration fix for Kaby/Coffee Lake CPUs"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Update KBL Package C-state events to also include PC8/PC9/PC10 counters

5 years agoslip: make slhc_free() silently accept an error pointer
Linus Torvalds [Thu, 25 Apr 2019 23:13:58 +0000 (16:13 -0700)]
slip: make slhc_free() silently accept an error pointer

This way, slhc_free() accepts what slhc_init() returns, whether that is
an error or not.

In particular, the pattern in sl_alloc_bufs() is

        slcomp = slhc_init(16, 16);
        ...
        slhc_free(slcomp);

for the error handling path, and rather than complicate that code, just
make it ok to always free what was returned by the init function.

That's what the code used to do before commit 4ab42d78e37a ("ppp, slip:
Validate VJ compression slot parameters completely") when slhc_init()
just returned NULL for the error case, with no actual indication of the
details of the error.

Reported-by: syzbot+45474c076a4927533d2e@syzkaller.appspotmail.com
Fixes: 4ab42d78e37a ("ppp, slip: Validate VJ compression slot parameters completely")
Acked-by: Ben Hutchings <ben@decadent.org.uk>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Sat, 27 Apr 2019 01:15:33 +0000 (18:15 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge misc fixes from Andrew Morton:
 "9 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
  mm/page_alloc.c: fix never set ALLOC_NOFRAGMENT flag
  mm/page_alloc.c: avoid potential NULL pointer dereference
  mm, page_alloc: always use a captured page regardless of compaction result
  mm: do not boost watermarks to avoid fragmentation for the DISCONTIG memory model
  lib/test_vmalloc.c: do not create cpumask_t variable on stack
  lib/Kconfig.debug: fix build error without CONFIG_BLOCK
  zram: pass down the bvec we need to read into in the work struct
  mm/memory_hotplug.c: drop memory device reference after find_memory_block()

5 years agoInput: synaptics-rmi4 - write config register values to the right offset
Lucas Stach [Sat, 27 Apr 2019 00:22:01 +0000 (17:22 -0700)]
Input: synaptics-rmi4 - write config register values to the right offset

Currently any changed config register values don't take effect, as the
function to write them back is called with the wrong register offset.

Fixes: ff8f83708b3e (Input: synaptics-rmi4 - add support for 2D
                     sensors and F11)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
5 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 26 Apr 2019 18:26:53 +0000 (11:26 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - keep the tail of an unaligned initrd reserved

 - adjust ftrace_make_call() to deal with the relative nature of PLTs

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64/module: ftrace: deal with place relative nature of PLTs
  arm64: mm: Ensure tail of unaligned initrd is reserved

5 years agoMerge tag 'trace-v5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Fri, 26 Apr 2019 18:09:55 +0000 (11:09 -0700)]
Merge tag 'trace-v5.1-rc6' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Three tracing fixes:

   - Use "nosteal" for ring buffer splice pages

   - Memory leak fix in error path of trace_pid_write()

   - Fix preempt_enable_no_resched() (use preempt_enable()) in ring
     buffer code"

* tag 'trace-v5.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  trace: Fix preempt_enable_no_resched() abuse
  tracing: Fix a memory leak by early error exit in trace_pid_write()
  tracing: Fix buffer_ref pipe ops

5 years agoMerge tag 'gpio-v5.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux...
Linus Torvalds [Fri, 26 Apr 2019 17:46:22 +0000 (10:46 -0700)]
Merge tag 'gpio-v5.1-3' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Not much to say about them, regular fixes:

   - Fix a bug on the errorpath of gpiochip_add_data_with_key()

   - IRQ type setting on the spreadtrum GPIO driver"

* tag 'gpio-v5.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: Fix gpiochip_add_data_with_key() error path
  gpio: eic: sprd: Fix incorrect irq type setting for the sync EIC

5 years agoMerge tag 'drm-fixes-2019-04-26' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 26 Apr 2019 17:39:46 +0000 (10:39 -0700)]
Merge tag 'drm-fixes-2019-04-26' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Regular drm fixes, nothing too outstanding, I'm guessing Easter was
  slowing people down.

  i915:
   - FEC enable fix
   - BXT display lanes fix

  ttm:
   - fix reinit for reloading drivers regression

  imx:
   - DP CSC fix

  sun4i:
   - module unload/load fix

  vc4:
   - memory leak fix
   - compile fix

  dw-hdmi:
   - rockchip scdc overflow fix

  sched:
   - docs fix

  vmwgfx:
   - dma api layering fix"

* tag 'drm-fixes-2019-04-26' of git://anongit.freedesktop.org/drm/drm:
  drm/bridge: dw-hdmi: fix SCDC configuration for ddc-i2c-bus
  drm/vmwgfx: Fix dma API layer violation
  drm/vc4: Fix compilation error reported by kbuild test bot
  drm/sun4i: Unbind components before releasing DRM and memory
  drm/vc4: Fix memory leak during gpu reset.
  drm/sched: Fix description of drm_sched_stop
  drm/imx: don't skip DP channel disable for background plane
  gpu: ipu-v3: dp: fix CSC handling
  drm/ttm: fix re-init of global structures
  drm/sun4i: Fix component unbinding and component master deletion
  drm/sun4i: Set device driver data at bind time for use in unbind
  drm/sun4i: Add missing drm_atomic_helper_shutdown at driver unbind
  drm/i915: Restore correct bxt_ddi_phy_calc_lane_lat_optim_mask() calculation
  drm/i915: Do not enable FEC without DSC
  drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs

5 years agoMerge tag 'for-5.1-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
Linus Torvalds [Fri, 26 Apr 2019 16:46:46 +0000 (09:46 -0700)]
Merge tag 'for-5.1-rc6-tag' of git://git./linux/kernel/git/kdave/linux

Pull btrfs fix from David Sterba:
 "One patch to fix a crash in io submission path, due to memory
  allocation errors.

  In short, the multipage bio work that landed in 5.1 caused larger bios
  that in turn require larger temporary memory for checksums. The patch
  is a workaround, we're going to rework the allocation so it does not
  require the vmalloc fallback.

  It took a while to identify that it's caused by patches in 5.1 and not
  a patchset that did some changes in error handling in the code. I've
  tested it on various memory/cpu combinations, it could hit OOM but
  does not crash.

  The timestamp of the patch is less than a day due to updates in the
  changelog, tests were running meanwhile"

* tag 'for-5.1-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: Switch memory allocations in async csum calculation path to kvmalloc

5 years agoMerge tag '5.1-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 26 Apr 2019 16:45:39 +0000 (09:45 -0700)]
Merge tag '5.1-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Three small SMB3 fixes (all for stable as well): two leaks and a
  rename bug"

* tag '5.1-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix page reference leak with readv/writev
  cifs: do not attempt cifs operation on smb2+ rename error
  cifs: fix memory leak in SMB2_read

5 years agofs/proc/proc_sysctl.c: Fix a NULL pointer dereference
YueHaibing [Fri, 26 Apr 2019 05:24:05 +0000 (22:24 -0700)]
fs/proc/proc_sysctl.c: Fix a NULL pointer dereference

Syzkaller report this:

  sysctl could not get directory: /net//bridge -12
  kasan: CONFIG_KASAN_INLINE enabled
  kasan: GPF could be caused by NULL-ptr deref or user memory access
  general protection fault: 0000 [#1] SMP KASAN PTI
  CPU: 1 PID: 7027 Comm: syz-executor.0 Tainted: G         C        5.1.0-rc3+ #8
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
  RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
  RIP: 0010:__rb_change_child include/linux/rbtree_augmented.h:144 [inline]
  RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:186 [inline]
  RIP: 0010:rb_erase+0x5f4/0x19f0 lib/rbtree.c:459
  Code: 00 0f 85 60 13 00 00 48 89 1a 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 75 0c 00 00 4d 85 ed 4c 89 2e 74 ce 4c 89 ea 48
  RSP: 0018:ffff8881bb507778 EFLAGS: 00010206
  RAX: dffffc0000000000 RBX: ffff8881f224b5b8 RCX: ffffffff818f3f6a
  RDX: 000000000000000a RSI: 0000000000000050 RDI: ffff8881f224b568
  RBP: 0000000000000000 R08: ffffed10376a0ef4 R09: ffffed10376a0ef4
  R10: 0000000000000001 R11: ffffed10376a0ef4 R12: ffff8881f224b558
  R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
  FS:  00007f3e7ce13700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 00007fd60fbe9398 CR3: 00000001cb55c001 CR4: 00000000007606e0
  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  PKRU: 55555554
  Call Trace:
   erase_entry fs/proc/proc_sysctl.c:178 [inline]
   erase_header+0xe3/0x160 fs/proc/proc_sysctl.c:207
   start_unregistering fs/proc/proc_sysctl.c:331 [inline]
   drop_sysctl_table+0x558/0x880 fs/proc/proc_sysctl.c:1631
   get_subdir fs/proc/proc_sysctl.c:1022 [inline]
   __register_sysctl_table+0xd65/0x1090 fs/proc/proc_sysctl.c:1335
   br_netfilter_init+0x68/0x1000 [br_netfilter]
   do_one_initcall+0xbc/0x47d init/main.c:901
   do_init_module+0x1b5/0x547 kernel/module.c:3456
   load_module+0x6405/0x8c10 kernel/module.c:3804
   __do_sys_finit_module+0x162/0x190 kernel/module.c:3898
   do_syscall_64+0x9f/0x450 arch/x86/entry/common.c:290
   entry_SYSCALL_64_after_hwframe+0x49/0xbe
  Modules linked in: br_netfilter(+) backlight comedi(C) hid_sensor_hub max3100 ti_ads8688 udc_core fddi snd_mona leds_gpio rc_streamzap mtd pata_netcell nf_log_common rc_winfast udp_tunnel snd_usbmidi_lib snd_usb_toneport snd_usb_line6 snd_rawmidi snd_seq_device snd_hwdep videobuf2_v4l2 videobuf2_common videodev media videobuf2_vmalloc videobuf2_memops rc_gadmei_rm008z 8250_of smm665 hid_tmff hid_saitek hwmon_vid rc_ati_tv_wonder_hd_600 rc_core pata_pdc202xx_old dn_rtmsg as3722 ad714x_i2c ad714x snd_soc_cs4265 hid_kensington panel_ilitek_ili9322 drm drm_panel_orientation_quirks ipack cdc_phonet usbcore phonet hid_jabra hid extcon_arizona can_dev industrialio_triggered_buffer kfifo_buf industrialio adm1031 i2c_mux_ltc4306 i2c_mux ipmi_msghandler mlxsw_core snd_soc_cs35l34 snd_soc_core snd_pcm_dmaengine snd_pcm snd_timer ac97_bus snd_compress snd soundcore gpio_da9055 uio ecdh_generic mdio_thunder of_mdio fixed_phy libphy mdio_cavium iptable_security iptable_raw iptable_mangle
   iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter bpfilter ip6_vti ip_vti ip_gre ipip sit tunnel4 ip_tunnel hsr veth netdevsim vxcan batman_adv cfg80211 rfkill chnl_net caif nlmon dummy team bonding vcan bridge stp llc ip6_gre gre ip6_tunnel tunnel6 tun joydev mousedev ppdev tpm kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel ide_pci_generic piix aes_x86_64 crypto_simd cryptd ide_core glue_helper input_leds psmouse intel_agp intel_gtt serio_raw ata_generic i2c_piix4 agpgart pata_acpi parport_pc parport floppy rtc_cmos sch_fq_codel ip_tables x_tables sha1_ssse3 sha1_generic ipv6 [last unloaded: br_netfilter]
  Dumping ftrace buffer:
     (ftrace buffer empty)
  ---[ end trace 68741688d5fbfe85 ]---

commit 23da9588037e ("fs/proc/proc_sysctl.c: fix NULL pointer
dereference in put_links") forgot to handle start_unregistering() case,
while header->parent is NULL, it calls erase_header() and as seen in the
above syzkaller call trace, accessing &header->parent->root will trigger
a NULL pointer dereference.

As that commit explained, there is also no need to call
start_unregistering() if header->parent is NULL.

Link: http://lkml.kernel.org/r/20190409153622.28112-1-yuehaibing@huawei.com
Fixes: 23da9588037e ("fs/proc/proc_sysctl.c: fix NULL pointer dereference in put_links")
Fixes: 0e47c99d7fe25 ("sysctl: Replace root_list with links between sysctl_table_sets")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm/page_alloc.c: fix never set ALLOC_NOFRAGMENT flag
Andrey Ryabinin [Fri, 26 Apr 2019 05:24:01 +0000 (22:24 -0700)]
mm/page_alloc.c: fix never set ALLOC_NOFRAGMENT flag

Commit 0a79cdad5eb2 ("mm: use alloc_flags to record if kswapd can wake")
removed setting of the ALLOC_NOFRAGMENT flag.  Bring it back.

The runtime effect is that ALLOC_NOFRAGMENT behaviour is restored so
that allocations are spread across local zones to avoid fragmentation
due to mixing pageblocks as long as possible.

Link: http://lkml.kernel.org/r/20190423120806.3503-2-aryabinin@virtuozzo.com
Fixes: 0a79cdad5eb2 ("mm: use alloc_flags to record if kswapd can wake")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm/page_alloc.c: avoid potential NULL pointer dereference
Andrey Ryabinin [Fri, 26 Apr 2019 05:23:58 +0000 (22:23 -0700)]
mm/page_alloc.c: avoid potential NULL pointer dereference

ac.preferred_zoneref->zone passed to alloc_flags_nofragment() can be NULL.
'zone' pointer unconditionally derefernced in alloc_flags_nofragment().
Bail out on NULL zone to avoid potential crash.  Currently we don't see
any crashes only because alloc_flags_nofragment() has another bug which
allows compiler to optimize away all accesses to 'zone'.

Link: http://lkml.kernel.org/r/20190423120806.3503-1-aryabinin@virtuozzo.com
Fixes: 6bb154504f8b ("mm, page_alloc: spread allocations across zones before introducing fragmentation")
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm, page_alloc: always use a captured page regardless of compaction result
Mel Gorman [Fri, 26 Apr 2019 05:23:54 +0000 (22:23 -0700)]
mm, page_alloc: always use a captured page regardless of compaction result

During the development of commit 5e1f0f098b46 ("mm, compaction: capture
a page under direct compaction"), a paranoid check was added to ensure
that if a captured page was available after compaction that it was
consistent with the final state of compaction.  The intent was to catch
serious programming bugs such as using a stale page pointer and causing
corruption problems.

However, it is possible to get a captured page even if compaction was
unsuccessful if an interrupt triggered and happened to free pages in
interrupt context that got merged into a suitable high-order page.  It's
highly unlikely but Li Wang did report the following warning on s390
occuring when testing OOM handling.  Note that the warning is slightly
edited for clarity.

  WARNING: CPU: 0 PID: 9783 at mm/page_alloc.c:3777 __alloc_pages_direct_compact+0x182/0x190
  Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs
    lockd grace fscache sunrpc pkey ghash_s390 prng xts aes_s390
    des_s390 des_generic sha512_s390 zcrypt_cex4 zcrypt vmur binfmt_misc
    ip_tables xfs libcrc32c dasd_fba_mod qeth_l2 dasd_eckd_mod dasd_mod
    qeth qdio lcs ctcm ccwgroup fsm dm_mirror dm_region_hash dm_log
    dm_mod
  CPU: 0 PID: 9783 Comm: copy.sh Kdump: loaded Not tainted 5.1.0-rc 5 #1

This patch simply removes the check entirely instead of trying to be
clever about pages freed from interrupt context.  If a serious
programming error was introduced, it is highly likely to be caught by
prep_new_page() instead.

Link: http://lkml.kernel.org/r/20190419085133.GH18914@techsingularity.net
Fixes: 5e1f0f098b46 ("mm, compaction: capture a page under direct compaction")
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reported-by: Li Wang <liwang@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm: do not boost watermarks to avoid fragmentation for the DISCONTIG memory model
Mel Gorman [Fri, 26 Apr 2019 05:23:51 +0000 (22:23 -0700)]
mm: do not boost watermarks to avoid fragmentation for the DISCONTIG memory model

Mikulas Patocka reported that commit 1c30844d2dfe ("mm: reclaim small
amounts of memory when an external fragmentation event occurs") "broke"
memory management on parisc.

The machine is not NUMA but the DISCONTIG model creates three pgdats
even though it's a UMA machine for the following ranges

        0) Start 0x0000000000000000 End 0x000000003fffffff Size   1024 MB
        1) Start 0x0000000100000000 End 0x00000001bfdfffff Size   3070 MB
        2) Start 0x0000004040000000 End 0x00000040ffffffff Size   3072 MB

Mikulas reported:

With the patch 1c30844d2, the kernel will incorrectly reclaim the
first zone when it fills up, ignoring the fact that there are two
completely free zones. Basiscally, it limits cache size to 1GiB.

For example, if I run:
# dd if=/dev/sda of=/dev/null bs=1M count=2048

- with the proper kernel, there should be "Buffers - 2GiB"
when this command finishes. With the patch 1c30844d2, buffers
will consume just 1GiB or slightly more, because the kernel was
incorrectly reclaiming them.

The page allocator and reclaim makes assumptions that pgdats really
represent NUMA nodes and zones represent ranges and makes decisions on
that basis.  Watermark boosting for small pgdats leads to unexpected
results even though this would have behaved reasonably on SPARSEMEM.

DISCONTIG is essentially deprecated and even parisc plans to move to
SPARSEMEM so there is no need to be fancy, this patch simply disables
watermark boosting by default on DISCONTIGMEM.

Link: http://lkml.kernel.org/r/20190419094335.GJ18914@techsingularity.net
Fixes: 1c30844d2dfe ("mm: reclaim small amounts of memory when an external fragmentation event occurs")
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Tested-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agolib/test_vmalloc.c: do not create cpumask_t variable on stack
Uladzislau Rezki (Sony) [Fri, 26 Apr 2019 05:23:47 +0000 (22:23 -0700)]
lib/test_vmalloc.c: do not create cpumask_t variable on stack

On my "Intel(R) Xeon(R) W-2135 CPU @ 3.70GHz" system(12 CPUs) i get the
warning from the compiler about frame size:

   warning: the frame size of 1096 bytes is larger than 1024 bytes [-Wframe-larger-than=]

the size of cpumask_t depends on number of CPUs, therefore just make use
of cpumask_of() in set_cpus_allowed_ptr() as a second argument.

Link: http://lkml.kernel.org/r/20190418193925.9361-1-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Roman Gushchin <guro@fb.com>
Cc: Uladzislau Rezki <urezki@gmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agolib/Kconfig.debug: fix build error without CONFIG_BLOCK
YueHaibing [Fri, 26 Apr 2019 05:23:44 +0000 (22:23 -0700)]
lib/Kconfig.debug: fix build error without CONFIG_BLOCK

If CONFIG_TEST_KMOD is set to M, while CONFIG_BLOCK is not set, XFS and
BTRFS can not be compiled successly.

Link: http://lkml.kernel.org/r/20190410075434.35220-1-yuehaibing@huawei.com
Fixes: d9c6a72d6fa2 ("kmod: add test driver to stress test the module loader")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agozram: pass down the bvec we need to read into in the work struct
Jérôme Glisse [Fri, 26 Apr 2019 05:23:41 +0000 (22:23 -0700)]
zram: pass down the bvec we need to read into in the work struct

When scheduling work item to read page we need to pass down the proper
bvec struct which points to the page to read into.  Before this patch it
uses a randomly initialized bvec (only if PAGE_SIZE != 4096) which is
wrong.

Note that without this patch on arch/kernel where PAGE_SIZE != 4096
userspace could read random memory through a zram block device (thought
userspace probably would have no control on the address being read).

Link: http://lkml.kernel.org/r/20190408183219.26377-1-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm/memory_hotplug.c: drop memory device reference after find_memory_block()
David Hildenbrand [Fri, 26 Apr 2019 05:23:37 +0000 (22:23 -0700)]
mm/memory_hotplug.c: drop memory device reference after find_memory_block()

Right now we are using find_memory_block() to get the node id for the
pfn range to online.  We are missing to drop a reference to the memory
block device.  While the device still gets unregistered via
device_unregister(), resulting in no user visible problem, the device is
never released via device_release(), resulting in a memory leak.  Fix
that by properly using a put_device().

Link: http://lkml.kernel.org/r/20190411110955.1430-1-david@redhat.com
Fixes: d0dc12e86b31 ("mm/memory_hotplug: optimize memory hotplug")
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Pankaj Gupta <pagupta@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Arun KS <arunks@codeaurora.org>
Cc: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agotrace: Fix preempt_enable_no_resched() abuse
Peter Zijlstra [Tue, 23 Apr 2019 20:03:18 +0000 (22:03 +0200)]
trace: Fix preempt_enable_no_resched() abuse

Unless the very next line is schedule(), or implies it, one must not use
preempt_enable_no_resched(). It can cause a preemption to go missing and
thereby cause arbitrary delays, breaking the PREEMPT=y invariant.

Link: http://lkml.kernel.org/r/20190423200318.GY14281@hirez.programming.kicks-ass.net
Cc: Waiman Long <longman@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: the arch/x86 maintainers <x86@kernel.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: huang ying <huang.ying.caritas@gmail.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: stable@vger.kernel.org
Fixes: 2c2d7329d8af ("tracing/ftrace: use preempt_enable_no_resched_notrace in ring_buffer_time_stamp()")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
5 years agotracing: Fix a memory leak by early error exit in trace_pid_write()
Wenwen Wang [Sat, 20 Apr 2019 02:22:59 +0000 (21:22 -0500)]
tracing: Fix a memory leak by early error exit in trace_pid_write()

In trace_pid_write(), the buffer for trace parser is allocated through
kmalloc() in trace_parser_get_init(). Later on, after the buffer is used,
it is then freed through kfree() in trace_parser_put(). However, it is
possible that trace_pid_write() is terminated due to unexpected errors,
e.g., ENOMEM. In that case, the allocated buffer will not be freed, which
is a memory leak bug.

To fix this issue, free the allocated buffer when an error is encountered.

Link: http://lkml.kernel.org/r/1555726979-15633-1-git-send-email-wang6495@umn.edu
Fixes: f4d34a87e9c10 ("tracing: Use pid bitmap instead of a pid array for set_event_pid")
Cc: stable@vger.kernel.org
Signed-off-by: Wenwen Wang <wang6495@umn.edu>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
5 years agotracing: Fix buffer_ref pipe ops
Jann Horn [Thu, 4 Apr 2019 21:59:25 +0000 (23:59 +0200)]
tracing: Fix buffer_ref pipe ops

This fixes multiple issues in buffer_pipe_buf_ops:

 - The ->steal() handler must not return zero unless the pipe buffer has
   the only reference to the page. But generic_pipe_buf_steal() assumes
   that every reference to the pipe is tracked by the page's refcount,
   which isn't true for these buffers - buffer_pipe_buf_get(), which
   duplicates a buffer, doesn't touch the page's refcount.
   Fix it by using generic_pipe_buf_nosteal(), which refuses every
   attempted theft. It should be easy to actually support ->steal, but the
   only current users of pipe_buf_steal() are the virtio console and FUSE,
   and they also only use it as an optimization. So it's probably not worth
   the effort.
 - The ->get() and ->release() handlers can be invoked concurrently on pipe
   buffers backed by the same struct buffer_ref. Make them safe against
   concurrency by using refcount_t.
 - The pointers stored in ->private were only zeroed out when the last
   reference to the buffer_ref was dropped. As far as I know, this
   shouldn't be necessary anyway, but if we do it, let's always do it.

Link: http://lkml.kernel.org/r/20190404215925.253531-1-jannh@google.com
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@vger.kernel.org
Fixes: 73a757e63114d ("ring-buffer: Return reader page back into existing ring buffer")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
5 years agodmaengine: mediatek-cqdma: fix wrong register usage in mtk_cqdma_start
Shun-Chih Yu [Thu, 25 Apr 2019 03:53:50 +0000 (11:53 +0800)]
dmaengine: mediatek-cqdma: fix wrong register usage in mtk_cqdma_start

This patch fixes wrong register usage in the mtk_cqdma_start. The
destination register should be MTK_CQDMA_DST2 instead.

Fixes: b1f01e48df5a ("dmaengine: mediatek: Add MediaTek Command-Queue DMA controller for MT6765 SoC")
Signed-off-by: Shun-Chih Yu <shun-chih.yu@mediatek.com>
Cc: stable@vger.kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
5 years agoMerge tag 'imx-drm-fixes-2019-04-25' of git://git.pengutronix.de/pza/linux into drm...
Dave Airlie [Fri, 26 Apr 2019 00:32:57 +0000 (10:32 +1000)]
Merge tag 'imx-drm-fixes-2019-04-25' of git://git.pengutronix.de/pza/linux into drm-fixes

drm/imx: fix DP CSC handling

- Fix the DP color space conversion matrix setup to avoid bugs where
  disabling the overlay plane while both primary and overlay plane are
  routed via the CSC unit would not reconfigure the CSC routing
  properly, leaving the display in a nonworking state, or the CSC
  setting from a previously set mode would be left behind, causing
  wrong colors when reenabling the display in certain configurations.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1556183136.2271.3.camel@pengutronix.de
5 years agoMerge branch 'vmwgfx-fixes-5.1' of git://people.freedesktop.org/~thomash/linux into...
Dave Airlie [Fri, 26 Apr 2019 00:30:17 +0000 (10:30 +1000)]
Merge branch 'vmwgfx-fixes-5.1' of git://people.freedesktop.org/~thomash/linux into drm-fixes

A single fix for a layer violation requested by Cristoph.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Hellstrom <thellstrom@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190425204100.3982-1-thellstrom@vmware.com
5 years agoMerge tag 'drm-misc-fixes-2019-04-25' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Fri, 26 Apr 2019 00:29:07 +0000 (10:29 +1000)]
Merge tag 'drm-misc-fixes-2019-04-25' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

- sun4i: Fix module loading / unloading
- vc4: Fix a compilation error and memory leak
- dw-hdmi: Fix an overflow on Rockchip and SCDC configuration

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190425132739.pngmfiqucqmulxkz@flea
5 years agoMerge branch 'drm-fixes-5.1' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 26 Apr 2019 00:25:57 +0000 (10:25 +1000)]
Merge branch 'drm-fixes-5.1' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

- ttm regression fix
- sched documentation fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190424230120.3423-1-alexander.deucher@amd.com
5 years agoMerge tag 'drm-intel-fixes-2019-04-24' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Fri, 26 Apr 2019 00:13:49 +0000 (10:13 +1000)]
Merge tag 'drm-intel-fixes-2019-04-24' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

A fix for display lanes calculation for BXT and a protection
to avoid enabling FEC without DSC.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190424215359.GA26100@intel.com
5 years agosched/numa: Fix a possible divide-by-zero
Xie XiuQi [Sat, 20 Apr 2019 08:34:16 +0000 (16:34 +0800)]
sched/numa: Fix a possible divide-by-zero

sched_clock_cpu() may not be consistent between CPUs. If a task
migrates to another CPU, then se.exec_start is set to that CPU's
rq_clock_task() by update_stats_curr_start(). Specifically, the new
value might be before the old value due to clock skew.

So then if in numa_get_avg_runtime() the expression:

  'now - p->last_task_numa_placement'

ends up as -1, then the divider '*period + 1' in task_numa_placement()
is 0 and things go bang. Similar to update_curr(), check if time goes
backwards to avoid this.

[ peterz: Wrote new changelog. ]
[ mingo: Tweaked the code comment. ]

Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: cj.chengjian@huawei.com
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20190425080016.GX11158@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
5 years agoMerge tag 'ceph-for-5.1-rc7' of git://github.com/ceph/ceph-client
Linus Torvalds [Thu, 25 Apr 2019 17:48:50 +0000 (10:48 -0700)]
Merge tag 'ceph-for-5.1-rc7' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "dentry name handling fixes from Jeff and a memory leak fix from Zheng.

  Both are old issues, marked for stable"

* tag 'ceph-for-5.1-rc7' of git://github.com/ceph/ceph-client:
  ceph: fix ci->i_head_snapc leak
  ceph: handle the case where a dentry has been renamed on outstanding req
  ceph: ensure d_name stability in ceph_dentry_hash()
  ceph: only use d_name directly when parent is locked

5 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Thu, 25 Apr 2019 16:15:03 +0000 (09:15 -0700)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This fixes a bug in xts and lrw where they may sleep in an atomic
  context"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: lrw - Fix atomic sleep when walking skcipher
  crypto: xts - Fix atomic sleep when walking skcipher

5 years agoRDMA/hns: Bugfix for mapping user db
Lijun Ou [Tue, 23 Apr 2019 09:30:26 +0000 (17:30 +0800)]
RDMA/hns: Bugfix for mapping user db

When the maximum send wr delivered by the user is zero, the qp does not
have a sq.

When allocating the sq db buffer to store the user sq pi pointer and map
it to the kernel mode, max_send_wr is used as the trigger condition, while
the kernel does not consider the max_send_wr trigger condition when
mapmping db. It will cause sq record doorbell map fail and create qp fail.

The failed print information as follows:

 hns3 0000:7d:00.1: Send cmd: tail - 418, opcode - 0x8504, flag - 0x0011, retval - 0x0000
 hns3 0000:7d:00.1: Send cmd: 0xe59dc000 0x00000000 0x00000000 0x00000000 0x00000116 0x0000ffff
 hns3 0000:7d:00.1: sq record doorbell map failed!
 hns3 0000:7d:00.1: Create RC QP failed

Fixes: 0425e3e6e0c7 ("RDMA/hns: Support flush cqe for hip08 in kernel space")
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agobtrfs: Switch memory allocations in async csum calculation path to kvmalloc
Nikolay Borisov [Mon, 1 Apr 2019 08:29:58 +0000 (11:29 +0300)]
btrfs: Switch memory allocations in async csum calculation path to kvmalloc

Recent multi-page biovec rework allowed creation of bios that can span
large regions - up to 128 megabytes in the case of btrfs. OTOH btrfs'
submission path currently allocates a contiguous array to store the
checksums for every bio submitted. This means we can request up to
(128mb / BTRFS_SECTOR_SIZE) * 4 bytes + 32bytes of memory from kmalloc.
On busy systems with possibly fragmented memory said kmalloc can fail
which will trigger BUG_ON due to improper error handling IO submission
context in btrfs.

Until error handling is improved or bios in btrfs limited to a more
manageable size (e.g. 1m) let's use kvmalloc to fallback to vmalloc for
such large allocations. There is no hard requirement that the memory
allocated for checksums during IO submission has to be contiguous, but
this is a simple fix that does not require several non-contiguous
allocations.

For small writes this is unlikely to have any visible effect since
kmalloc will still satisfy allocation requests as usual. For larger
requests the code will just fallback to vmalloc.

We've performed evaluation on several workload types and there was no
significant difference kmalloc vs kvmalloc.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
5 years agodrm/bridge: dw-hdmi: fix SCDC configuration for ddc-i2c-bus
Jonas Karlman [Sun, 21 Apr 2019 08:25:50 +0000 (08:25 +0000)]
drm/bridge: dw-hdmi: fix SCDC configuration for ddc-i2c-bus

When ddc-i2c-bus property is used, a NULL pointer dereference is reported:

[   31.041669] Unable to handle kernel NULL pointer dereference at virtual address 00000008
[   31.041671] pgd = 4d3c16f6
[   31.041673] [00000008] *pgd=00000000
[   31.041678] Internal error: Oops: 5 [#1] SMP ARM

[   31.041711] Hardware name: Rockchip (Device Tree)
[   31.041718] PC is at i2c_transfer+0x8/0xe4
[   31.041721] LR is at drm_scdc_read+0x54/0x84
[   31.041723] pc : [<c073273c>]    lr : [<c05926c4>]    psr: 280f0013
[   31.041725] sp : edffdad0  ip : 5ccb5511  fp : 00000058
[   31.041727] r10: 00000780  r9 : edf91608  r8 : c11b0f48
[   31.041728] r7 : 00000438  r6 : 00000000  r5 : 00000000  r4 : 00000000
[   31.041730] r3 : edffdae7  r2 : 00000002  r1 : edffdaec  r0 : 00000000

[   31.041908] [<c073273c>] (i2c_transfer) from [<c05926c4>] (drm_scdc_read+0x54/0x84)
[   31.041913] [<c05926c4>] (drm_scdc_read) from [<c0592858>] (drm_scdc_set_scrambling+0x30/0xbc)
[   31.041919] [<c0592858>] (drm_scdc_set_scrambling) from [<c05cc0f4>] (dw_hdmi_update_power+0x1440/0x1610)
[   31.041926] [<c05cc0f4>] (dw_hdmi_update_power) from [<c05cc574>] (dw_hdmi_bridge_enable+0x2c/0x70)
[   31.041932] [<c05cc574>] (dw_hdmi_bridge_enable) from [<c05aed48>] (drm_bridge_enable+0x24/0x34)
[   31.041938] [<c05aed48>] (drm_bridge_enable) from [<c0591060>] (drm_atomic_helper_commit_modeset_enables+0x114/0x220)
[   31.041943] [<c0591060>] (drm_atomic_helper_commit_modeset_enables) from [<c05c3fe0>] (rockchip_atomic_helper_commit_tail_rpm+0x28/0x64)

hdmi->i2c may not be set when ddc-i2c-bus property is used in device tree.
Fix this by using hdmi->ddc as the i2c adapter when calling drm_scdc_*().
Also report that SCDC is not supported when there is no DDC bus.

Fixes: 264fce6cc2c1 ("drm/bridge: dw-hdmi: Add SCDC and TMDS Scrambling support")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/VE1PR03MB59031814B5BCAB2152923BDAAC210@VE1PR03MB5903.eurprd03.prod.outlook.com
5 years agogpio: Fix gpiochip_add_data_with_key() error path
Geert Uytterhoeven [Wed, 24 Apr 2019 13:59:33 +0000 (15:59 +0200)]
gpio: Fix gpiochip_add_data_with_key() error path

The err_remove_chip block is too coarse, and may perform cleanup that
must not be done.  E.g. if of_gpiochip_add() fails, of_gpiochip_remove()
is still called, causing:

    OF: ERROR: Bad of_node_put() on /soc/gpio@e6050000
    CPU: 1 PID: 20 Comm: kworker/1:1 Not tainted 5.1.0-rc2-koelsch+ #407
    Hardware name: Generic R-Car Gen2 (Flattened Device Tree)
    Workqueue: events deferred_probe_work_func
    [<c020ec74>] (unwind_backtrace) from [<c020ae58>] (show_stack+0x10/0x14)
    [<c020ae58>] (show_stack) from [<c07c1224>] (dump_stack+0x7c/0x9c)
    [<c07c1224>] (dump_stack) from [<c07c5a80>] (kobject_put+0x94/0xbc)
    [<c07c5a80>] (kobject_put) from [<c0470420>] (gpiochip_add_data_with_key+0x8d8/0xa3c)
    [<c0470420>] (gpiochip_add_data_with_key) from [<c0473738>] (gpio_rcar_probe+0x1d4/0x314)
    [<c0473738>] (gpio_rcar_probe) from [<c052fca8>] (platform_drv_probe+0x48/0x94)

and later, if a GPIO consumer tries to use a GPIO from a failed
controller:

    WARNING: CPU: 0 PID: 1 at lib/refcount.c:156 kobject_get+0x38/0x4c
    refcount_t: increment on 0; use-after-free.
    Modules linked in:
    CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.1.0-rc2-koelsch+ #407
    Hardware name: Generic R-Car Gen2 (Flattened Device Tree)
    [<c020ec74>] (unwind_backtrace) from [<c020ae58>] (show_stack+0x10/0x14)
    [<c020ae58>] (show_stack) from [<c07c1224>] (dump_stack+0x7c/0x9c)
    [<c07c1224>] (dump_stack) from [<c0221580>] (__warn+0xd0/0xec)
    [<c0221580>] (__warn) from [<c02215e0>] (warn_slowpath_fmt+0x44/0x6c)
    [<c02215e0>] (warn_slowpath_fmt) from [<c07c58fc>] (kobject_get+0x38/0x4c)
    [<c07c58fc>] (kobject_get) from [<c068b3ec>] (of_node_get+0x14/0x1c)
    [<c068b3ec>] (of_node_get) from [<c0686f24>] (of_find_node_by_phandle+0xc0/0xf0)
    [<c0686f24>] (of_find_node_by_phandle) from [<c0686fbc>] (of_phandle_iterator_next+0x68/0x154)
    [<c0686fbc>] (of_phandle_iterator_next) from [<c0687fe4>] (__of_parse_phandle_with_args+0x40/0xd0)
    [<c0687fe4>] (__of_parse_phandle_with_args) from [<c0688204>] (of_parse_phandle_with_args_map+0x100/0x3ac)
    [<c0688204>] (of_parse_phandle_with_args_map) from [<c0471240>] (of_get_named_gpiod_flags+0x38/0x380)
    [<c0471240>] (of_get_named_gpiod_flags) from [<c046f864>] (gpiod_get_from_of_node+0x24/0xd8)
    [<c046f864>] (gpiod_get_from_of_node) from [<c0470aa4>] (devm_fwnode_get_index_gpiod_from_child+0xa0/0x144)
    [<c0470aa4>] (devm_fwnode_get_index_gpiod_from_child) from [<c05f425c>] (gpio_keys_probe+0x418/0x7bc)
    [<c05f425c>] (gpio_keys_probe) from [<c052fca8>] (platform_drv_probe+0x48/0x94)

Fix this by splitting the cleanup block, and adding a missing call to
gpiochip_irqchip_remove().

Fixes: 28355f81969962cf ("gpio: defer probe if pinctrl cannot be found")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
5 years agodrm/vmwgfx: Fix dma API layer violation
Thomas Hellstrom [Tue, 23 Apr 2019 12:02:57 +0000 (14:02 +0200)]
drm/vmwgfx: Fix dma API layer violation

Remove the check for IOMMU presence since it was considered a
layer violation.
This means we have no reliable way to destinguish between coherent
hardware IOMMU DMA address translations and incoherent SWIOTLB DMA
address translations, which we can't handle. So always presume the
former. This means that if anybody forces SWIOTLB without also setting
the vmw_force_coherent=1 vmwgfx option, driver operation will fail,
like it will on most other graphics drivers.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
5 years agoperf/x86/intel: Update KBL Package C-state events to also include PC8/PC9/PC10 counters
Harry Pan [Wed, 24 Apr 2019 14:50:33 +0000 (22:50 +0800)]
perf/x86/intel: Update KBL Package C-state events to also include PC8/PC9/PC10 counters

Kaby Lake (and Coffee Lake) has PC8/PC9/PC10 residency counters.

This patch updates the list of Kaby/Coffee Lake PMU event counters
from the snb_cstates[] list of events to the hswult_cstates[]
list of events, which keeps all previously supported events and
also adds the PKG_C8, PKG_C9 and PKG_C10 residency counters.

This allows user space tools to profile them through the perf interface.

Signed-off-by: Harry Pan <harry.pan@intel.com>
Cc: <stable@vger.kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: gs0622@gmail.com
Link: http://lkml.kernel.org/r/20190424145033.1924-1-harry.pan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>