linux-2.6-microblaze.git
11 months agonvmem: core: Implement force_ro sysfs attribute
Marek Vasut [Fri, 5 Jul 2024 07:48:52 +0000 (08:48 +0100)]
nvmem: core: Implement force_ro sysfs attribute

Implement "force_ro" sysfs attribute to allow users to set read-write
devices as read-only and back to read-write from userspace. The choice
of the name is based on MMC core 'force_ro' attribute.

This solves a situation where an AT24 I2C EEPROM with GPIO based nWP
signal may have to be occasionally updated. Such I2C EEPROM device is
usually set as read-only during most of the regular system operation,
but in case it has to be updated in a controlled manner, it could be
unlocked using this new "force_ro" sysfs attribute and then re-locked
again.

The "read-only" DT property and config->read_only configuration is
respected and is used to set default state of the device, read-only
or read-write, for devices which do implement .reg_write function.
For devices which do not implement .reg_write function, the device
is unconditionally read-only and the "force_ro" attribute is not
visible.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-16-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: Use sysfs_emit() for type attribute
Marek Vasut [Fri, 5 Jul 2024 07:48:51 +0000 (08:48 +0100)]
nvmem: Use sysfs_emit() for type attribute

Use sysfs_emit() instead of sprintf() to follow best practice per
Documentation/filesystems/sysfs.rst
"
show() should only use sysfs_emit()...
"

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-15-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: Document type attribute
Marek Vasut [Fri, 5 Jul 2024 07:48:50 +0000 (08:48 +0100)]
nvmem: Document type attribute

Document a type attribute used by userspace to discern different types of
NVMEM devices. The implementation is already present, the ABI document is
missing, add it.

Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-14-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: Replace spaces with tab in documentation
Marek Vasut [Fri, 5 Jul 2024 07:48:49 +0000 (08:48 +0100)]
nvmem: Replace spaces with tab in documentation

Replace two spaces with tab in the sysfs attribute documentation.
No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-13-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: core: drop unnecessary range checks in sysfs callbacks
Thomas Weißschuh [Fri, 5 Jul 2024 07:48:48 +0000 (08:48 +0100)]
nvmem: core: drop unnecessary range checks in sysfs callbacks

The same checks have already been done in sysfs_kf_bin_write() and
sysfs_kf_bin_read() just before the callbacks are invoked.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-12-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: core: remove global nvmem_cells_group
Thomas Weißschuh [Fri, 5 Jul 2024 07:48:47 +0000 (08:48 +0100)]
nvmem: core: remove global nvmem_cells_group

nvmem_cells_groups is a global variable that is also mutated.
This is complicated and error-prone.

Instead use a normal stack variable.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-11-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: core: add single sysfs group
Thomas Weißschuh [Fri, 5 Jul 2024 07:48:46 +0000 (08:48 +0100)]
nvmem: core: add single sysfs group

The sysfs core provides a function to easily register a single group.
Use it and remove the now unnecessary nvmem_cells_groups array.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-10-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agodt-bindings: nvmem: mediatek: efuse: add support for MT7988
Rafał Miłecki [Fri, 5 Jul 2024 07:48:45 +0000 (08:48 +0100)]
dt-bindings: nvmem: mediatek: efuse: add support for MT7988

Add compatible for MT7988 SoC.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-9-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agodt-bindings: nvmem: amlogic,meson-gx-efuse: add optional power-domains
Neil Armstrong [Fri, 5 Jul 2024 07:48:44 +0000 (08:48 +0100)]
dt-bindings: nvmem: amlogic,meson-gx-efuse: add optional power-domains

On newer SoCs, the eFuse hardware can require a power-domain to operate,
add it as optional.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-8-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: rockchip-efuse: set type to OTP
Heiko Stuebner [Fri, 5 Jul 2024 07:48:43 +0000 (08:48 +0100)]
nvmem: rockchip-efuse: set type to OTP

This device currently reports an "Unknown" type in sysfs.
Since it is an eFuse hardware device, set its type to OTP.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-7-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: rockchip-otp: Set type to OTP
Heiko Stuebner [Fri, 5 Jul 2024 07:48:42 +0000 (08:48 +0100)]
nvmem: rockchip-otp: Set type to OTP

The Rockchip OTP is obviously an OTP memory, so document this fact.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-6-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: rockchip-otp: set add_legacy_fixed_of_cells config option
Heiko Stuebner [Fri, 5 Jul 2024 07:48:41 +0000 (08:48 +0100)]
nvmem: rockchip-otp: set add_legacy_fixed_of_cells config option

The Rockchip OTP describes its layout via devicetree subnodes,
so set the appropriate property.

Fixes: 2cc3b37f5b6d ("nvmem: add explicit config option to read old syntax fixed OF cells")
Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-5-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: meson-efuse: Replacing the use of of_node_put to __free
MarileneGarcia [Fri, 5 Jul 2024 07:48:40 +0000 (08:48 +0100)]
nvmem: meson-efuse: Replacing the use of of_node_put to __free

Use __free for device_node values, and thus drop calls to
of_node_put.

The goal is to reduce memory management issues by using this
scope-based of_node_put() cleanup to simplify function exit
handling. When using __free a resource is allocated within a
block, it is automatically freed at the end of the block.

Suggested-by: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: MarileneGarcia <marilene.agarcia@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-4-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agodt-bindings: nvmem: mediatek: efuse: add support for MT7981
Rafał Miłecki [Fri, 5 Jul 2024 07:48:39 +0000 (08:48 +0100)]
dt-bindings: nvmem: mediatek: efuse: add support for MT7981

Add compatible for MT7981 SoC.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-3-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agonvmem: add missing MODULE_DESCRIPTION() macros
Jeff Johnson [Fri, 5 Jul 2024 07:48:38 +0000 (08:48 +0100)]
nvmem: add missing MODULE_DESCRIPTION() macros

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/nvmem/nvmem-apple-efuses.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/nvmem/nvmem_brcm_nvram.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/nvmem/nvmem_u-boot-env.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240705074852.423202-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agomisc: Register a PPI for the vcpu stall detection virtual device
Sebastian Ene [Wed, 3 Jul 2024 15:37:32 +0000 (15:37 +0000)]
misc: Register a PPI for the vcpu stall detection virtual device

Request a PPI for each vCPU during probe which will be used by the host
to communicate a stall detected event on the vCPU. When the host raises
this interrupt from the virtual machine monitor, the guest is expected to
handle the interrupt and panic.

Signed-off-by: Sebastian Ene <sebastianene@google.com>
Link: https://lore.kernel.org/r/20240703153732.3214238-3-sebastianene@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agodt-bindings: vcpu_stall_detector: Add a PPI interrupt to the virtual device
Sebastian Ene [Wed, 3 Jul 2024 15:37:31 +0000 (15:37 +0000)]
dt-bindings: vcpu_stall_detector: Add a PPI interrupt to the virtual device

The vcpu stall detector allows the host to monitor the availability of a
guest VM. Introduce a PPI interrupt which can be injected from the host
into the virtual gic to let the guest reboot itself.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Sebastian Ene <sebastianene@google.com>
Link: https://lore.kernel.org/r/20240703153732.3214238-2-sebastianene@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agomisc: keba: Add basic KEBA CP500 system FPGA support
Gerhard Engleder [Sun, 30 Jun 2024 19:47:39 +0000 (21:47 +0200)]
misc: keba: Add basic KEBA CP500 system FPGA support

The KEBA CP500 system FPGA is a PCIe device, which consists of multiple
IP cores. Every IP core has its own auxiliary driver. The cp500 driver
registers an auxiliary device for each device and the corresponding
drivers are loaded by the Linux driver infrastructure.

Currently 3 variants of this device exists. Every variant has its own
PCI device ID, which is used to determine the list of available IP
cores. In this first version only the auxiliary device for the I2C
controller is registered.

Besides the auxiliary device registration some other basic functions of
the FPGA are implemented; e.g, FPGA version sysfs file, keep FPGA
configuration on reset sysfs file, error message for errors on the
internal AXI bus of the FPGA.

Signed-off-by: Gerhard Engleder <eg@keba.com>
Link: https://lore.kernel.org/r/20240630194740.7137-2-gerhard@engleder-embedded.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agoeeprom: ee1004: Instantiate jc42 devices for DIMMS implementing Rev.1 SPD
Guenter Roeck [Sat, 29 Jun 2024 17:37:16 +0000 (10:37 -0700)]
eeprom: ee1004: Instantiate jc42 devices for DIMMS implementing Rev.1 SPD

DDR4 DIMMS implementing SPD Annex L, Revision 1 do not implement SPD byte
14 (Module Temperature Sensor); this byte was only added in revision 2 of
the standard. This only applies to DDR4, not DDR4E or LPDDR4, since those
DDR types were only introduced in revision 3 of the standard.

Use this information to instantiate the jc42 device if the module is a DDR4
following SPD revision 1.0 and a device is detected at the expected thermal
sensor address, even if the Module Temperature Sensor byte suggests that
the thermal sensor is not supported.

Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240629173716.20389-2-linux@roeck-us.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agoeeprom: ee1004: Call i2c_new_scanned_device to instantiate thermal sensor
Guenter Roeck [Sat, 29 Jun 2024 17:37:15 +0000 (10:37 -0700)]
eeprom: ee1004: Call i2c_new_scanned_device to instantiate thermal sensor

Instantiating a device by calling i2c_new_client_device() assumes that the
device is not already instantiated. If that is not the case, it will return
an error and generate a misleading kernel log message.

i2c i2c-0: Failed to register i2c client jc42 at 0x18 (-16)

This can be reproduced by unloading the ee1004 driver and loading it again.

Avoid this by calling i2c_new_scanned_device() instead, which returns
silently if a device is already instantiated or does not exist.

Fixes: 393bd1000f81 ("eeprom: ee1004: add support for temperature sensor")
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240629173716.20389-1-linux@roeck-us.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agoeeprom: ee1004: Add nvmem support
Armin Wolf [Tue, 25 Jun 2024 06:34:59 +0000 (08:34 +0200)]
eeprom: ee1004: Add nvmem support

Currently the driver does not register a nvmem provider, which means
that userspace programs cannot access the ee1004 EEPROM through the
standard nvmem sysfs API.
Fix this by replacing the custom sysfs attribute with a standard nvmem
interface, which also takes care of backwards compatibility.

Tested on a Dell Inspiron 3505.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240625063459.429953-2-W_Armin@gmx.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agoeeprom: ee1004: Use devres for bus data cleanup
Armin Wolf [Tue, 25 Jun 2024 06:34:58 +0000 (08:34 +0200)]
eeprom: ee1004: Use devres for bus data cleanup

Use devm_add_action_or_reset() to clean up the bus data at
driver removal or when an error occurs during probe.
This will allow us to use other devres-based APIs later.

Tested on a Dell Inspiron 3505.

Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240625063459.429953-1-W_Armin@gmx.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agoMerge tag 'iio-for-6.11b' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23...
Greg Kroah-Hartman [Thu, 4 Jul 2024 09:04:20 +0000 (11:04 +0200)]
Merge tag 'iio-for-6.11b' of ssh://gitolite./linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

IIO: 2nd set of new device support, features and cleanup for 6.11

The big one here is we finally have Paul Cercueil's (and others)
DMA buffer support for IIO devices enabling high speed zero
copy transfer of data to and from sensors supported by IIO (and for
example USB).  This should aid with upstream support of a range of
higher performance ADCs and DACs.

Two merges from other trees
- spi/spi_devm_optimize used for simplification in ad7944.
- dmaengine/topic_dma_vec to enable the DMABUF series.

One feature with impact outside IIO.
- Richer set of dev_err_probe() like helpers to cover ERR_PTR() cases.

New device support
==================
adi,ad7173
- Add support for AD4111, AD4112, AD4114, AD4115 and ADC4116 pseudo
  differential ADCs. Major driver rework was needed to enabled these.
adi,ad7944
- Use devm_spi_optimize_message() to avoid a local devm cleanup
  callback. This is the example case from the patch set, others will
  follow.
mediatek,mt6359-auxadc
- New driver for this ADC IP found in MT6357, MT6358 and MT6359 PMICs.
st,accel
- Add support for the LIS2DS12 accelerometer
ti,ads1119
- New driver for this 16 bit 2-differential or 4-single ended channel
  ADC.

Features
========
dt-bindings
- Introduce new common-mode-channel property to help handle pseudo
  differential ADCs where we have something that looks like one side
  of differential input, but which is only suited for use with a
  slow moving reference.
adi,adf4350
- Support use as a clock provider.
iio-hmwon
- Support reading of labels from IIO devices by their consumers and
  use this in the hwmon bridge.

Cleanup and minor fixes
=======================
Treewide
- Use regmap_clear_bits() / regmap_set_bits() to simplify open coded
  equivalents.
- Use devm_regulator_get_enable_read_voltage() to replace equivalent
  opencoded boilerplate. In some cases enabled complete conversion to
  devm handling and removal of explicit remove() callbacks.
- Introduce dev_err_ptr_probe() and other variants and make use of
  of them in a couple of examples driver cleanups. Will find use in
  many more drivers soon.
adi,ad7192
- Introduce local struct device *dev and use dev_err_probe() to give
  more readable code.
adi,adi-axi-adc/dac
- Improved consistency of messages using dev_err_probe()
adi,adis
- Split the trigger handling into cases that needed paging and those that
  don't resulting in more readable code.
- Use cleanup.h to simplify error paths via scoped cleanup.
- Add adis specific lock helpers and make use of them in a number of drivers.
adi,ad7192
- Update maintainer (Alisa-Dariana Roman)
adi,ad7606
- dt-binding cleanup.
avago,apds9306
- Add a maintainer entry (Subhajit Ghosh)
linear,ltc2309
- Fix a wrong endian type.
st,stm32-dfsdm
- Fix a missing port property in the dt-binding.
st,sensors
- Relax whoami match failure to a warning print rather than probe failure.
  This enables fallback compatibles to existing parts from those that don't
  necessarily even exit yet.

* tag 'iio-for-6.11b' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (112 commits)
  iio: adc: ad7173: Fix uninitialized symbol is_current_chan
  iio: adc: Add support for MediaTek MT6357/8/9 Auxiliary ADC
  math.h: Add unsigned 8 bits fractional numbers type
  dt-bindings: iio: adc: Add MediaTek MT6359 PMIC AUXADC
  iio: common: scmi_iio: convert to dev_err_probe()
  iio: backend: make use of dev_err_cast_probe()
  iio: temperature: ltc2983: convert to dev_err_probe()
  dev_printk: add new dev_err_probe() helpers
  iio: xilinx-ams: Add labels
  iio: adc: ad7944: use devm_spi_optimize_message()
  Documentation: iio: Document high-speed DMABUF based API
  iio: buffer-dmaengine: Support new DMABUF based userspace API
  iio: buffer-dma: Enable support for DMABUFs
  iio: core: Add new DMABUF interface infrastructure
  MAINTAINERS: Update AD7192 driver maintainer
  iio: adc: ad7192: use devm_regulator_get_enable_read_voltage
  iio: st_sensors: relax WhoAmI check in st_sensors_verify_id()
  MAINTAINERS: Add AVAGO APDS9306
  dt-bindings: iio: adc: adi,ad7606: comment and sort the compatible names
  dt-bindings: iio: adc: adi,ad7606: add missing datasheet link
  ...

11 months agoparport: Remove parport_driver.devmodel
Dr. David Alan Gilbert [Thu, 2 May 2024 15:48:23 +0000 (16:48 +0100)]
parport: Remove parport_driver.devmodel

'devmodel' hasn't actually been used since:
  'commit 3275158fa52a ("parport: remove use of devmodel")'
and everyone now has it set to true and has been fixed up; remove
the flag.

(There are still comments all over about it)

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20240502154823.67235-4-linux@treblig.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agoparport: Remove attach function pointer
Dr. David Alan Gilbert [Thu, 2 May 2024 15:48:22 +0000 (16:48 +0100)]
parport: Remove attach function pointer

The attach function pointers haven't actually been called since:
  'commit 3275158fa52a ("parport: remove use of devmodel")'
topped adding entries to the drivers list.

If you're converting a driver, look at the 'match_port' function
pointer instead.

(There are lots of comment references to 'attach' all over, but they
probably need some deeper understanding to check the semantics
to see if they can be replaced by match_port).

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20240502154823.67235-3-linux@treblig.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agoparport: Remove 'drivers' list
Dr. David Alan Gilbert [Thu, 2 May 2024 15:48:21 +0000 (16:48 +0100)]
parport: Remove 'drivers' list

The list has been empty since:
 'commit 3275158fa52a ("parport: remove use of devmodel")'

This also means we can remove the 'list_head' from
struct parport_driver.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20240502154823.67235-2-linux@treblig.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agomcb: remove unused struct 'mcb_parse_priv'
Dr. David Alan Gilbert [Mon, 24 Jun 2024 09:01:04 +0000 (11:01 +0200)]
mcb: remove unused struct 'mcb_parse_priv'

'mcb_parse_priv' has been unused since the initial
commit 3764e82e5150 ("drivers: Introduce MEN Chameleon Bus").

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Johannes Thumshirn <jth@kernel.org>
Link: https://lore.kernel.org/r/20240624090104.12871-2-jth@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agomisc: Drop explicit initialization of struct i2c_device_id::driver_data to 0
Uwe Kleine-König [Mon, 24 Jun 2024 12:51:01 +0000 (14:51 +0200)]
misc: Drop explicit initialization of struct i2c_device_id::driver_data to 0

These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.

While add it, also remove commas after the sentinel entries.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240624125101.1242750-2-u.kleine-koenig@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agobsr: add missing MODULE_DESCRIPTION() macro
Jeff Johnson [Sat, 15 Jun 2024 21:14:36 +0000 (14:14 -0700)]
bsr: add missing MODULE_DESCRIPTION() macro

With ARCH=powerpc, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/char/bsr.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240615-md-powerpc-drivers-char-v1-1-bff22fd778a4@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agoplatform/goldfish: goldfish_pipe: add missing MODULE_DESCRIPTION() macro
Jeff Johnson [Sat, 15 Jun 2024 21:34:06 +0000 (14:34 -0700)]
platform/goldfish: goldfish_pipe: add missing MODULE_DESCRIPTION() macro

With arch=x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/platform/goldfish/goldfish_pipe.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240615-goldfish_pipe-md-v2-1-b4323a969594@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agodca: add missing MODULE_DESCRIPTION() macro
Jeff Johnson [Sat, 15 Jun 2024 21:44:08 +0000 (14:44 -0700)]
dca: add missing MODULE_DESCRIPTION() macro

With ARCH=x86, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/dca/dca.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240615-dca-md-v2-1-c4062275a3f1@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agogreybus: add missing MODULE_DESCRIPTION() macros
Jeff Johnson [Wed, 26 Jun 2024 20:41:09 +0000 (13:41 -0700)]
greybus: add missing MODULE_DESCRIPTION() macros

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/greybus/greybus.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/greybus/gb-es2.o

Add all missing invocations of the MODULE_DESCRIPTION() macro.

Acked-by: Alex Elder <elder@kernel.org>
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240626-md-drivers-greybus-v2-1-d520ffb9a489@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agointel_th: msu-sink: add missing MODULE_DESCRIPTION()
Jeff Johnson [Fri, 31 May 2024 04:55:33 +0000 (21:55 -0700)]
intel_th: msu-sink: add missing MODULE_DESCRIPTION()

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/hwtracing/intel_th/intel_th_msu_sink.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240530-md-intel_th_msu_sink-v1-1-ae796336e7b9@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agodsp56k: add missing MODULE_DESCRIPTION() macro
Jeff Johnson [Tue, 18 Jun 2024 05:02:11 +0000 (22:02 -0700)]
dsp56k: add missing MODULE_DESCRIPTION() macro

With ARCH=m68k, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/char/dsp56k.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20240617-md-m68k-drivers-char-dsp56k-v1-1-56e435ffa664@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agodtlk: add missing MODULE_DESCRIPTION() macro
Jeff Johnson [Tue, 18 Jun 2024 05:15:56 +0000 (22:15 -0700)]
dtlk: add missing MODULE_DESCRIPTION() macro

With ARCH=m68k, make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/char/dtlk.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240617-md-m68k-drivers-char-dtlk-v1-1-a53a237f1f06@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agomisc: ti-st: st_kim: use 'time_left' variable with wait_for_completion_interruptible_...
Wolfram Sang [Tue, 4 Jun 2024 21:22:39 +0000 (23:22 +0200)]
misc: ti-st: st_kim: use 'time_left' variable with wait_for_completion_interruptible_timeout()

There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_for_completion_interruptible_timeout() causing patterns like:

timeout = wait_for_completion_interruptible_timeout(...)
if (!timeout) return -ETIMEDOUT;

with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20240604212240.4529-5-wsa+renesas@sang-engineering.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agomisc: tifm: use 'time_left' variable with wait_for_completion_timeout()
Wolfram Sang [Tue, 4 Jun 2024 21:22:38 +0000 (23:22 +0200)]
misc: tifm: use 'time_left' variable with wait_for_completion_timeout()

There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_for_completion_timeout() causing patterns like:

timeout = wait_for_completion_timeout(...)
if (!timeout) return -ETIMEDOUT;

with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20240604212240.4529-4-wsa+renesas@sang-engineering.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agomisc: bh1770glc: use 'time_left' variable with wait_event_interruptible_timeout()
Wolfram Sang [Tue, 4 Jun 2024 21:22:37 +0000 (23:22 +0200)]
misc: bh1770glc: use 'time_left' variable with wait_event_interruptible_timeout()

There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_event_interruptible_timeout() causing patterns like:

timeout = wait_event_interruptible_timeout(...)
if (!timeout) return -ETIMEDOUT;

with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20240604212240.4529-3-wsa+renesas@sang-engineering.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agomisc: apds990x: use 'time_left' variable with wait_event_interruptible_timeout()
Wolfram Sang [Tue, 4 Jun 2024 21:22:36 +0000 (23:22 +0200)]
misc: apds990x: use 'time_left' variable with wait_event_interruptible_timeout()

There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_event_interruptible_timeout() causing patterns like:

timeout = wait_event_interruptible_timeout(...)
if (!timeout) return -ETIMEDOUT;

with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20240604212240.4529-2-wsa+renesas@sang-engineering.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agobinder_alloc: Replace kcalloc with kvcalloc to mitigate OOM issues
Lei Liu [Wed, 19 Jun 2024 11:38:40 +0000 (19:38 +0800)]
binder_alloc: Replace kcalloc with kvcalloc to mitigate OOM issues

In binder_alloc, there is a frequent need for order3 memory allocation,
especially on small-memory mobile devices, which can lead to OOM and
cause foreground applications to be killed, resulting in flashbacks.

We use kvcalloc to allocate memory, which can reduce system OOM
occurrences, as well as decrease the time and probability of failure for
order3 memory allocations. Additionally, It has little impact on the
throughput of the binder. (as verified by Google's binder_benchmark
testing tool).

We have conducted multiple tests on an 8GB memory phone, kvcalloc has
little performance degradation and resolves frequent OOM issues, Below
is a partial excerpt of the test data.

throughput(TH_PUT) = (size * Iterations)/Time
kcalloc->kvcalloc:

Sample with kcalloc():
adb shell stop/ kcalloc /8+256G
---------------------------------------------------------------------
Benchmark                Time     CPU   Iterations  TH-PUT  TH-PUTCPU
                         (ns)     (ns)              (GB/s)    (GB/s)
---------------------------------------------------------------------
BM_sendVec_binder4      39126    18550    38894    3.976282  8.38684
BM_sendVec_binder8      38924    18542    37786    7.766108  16.3028
BM_sendVec_binder16     38328    18228    36700    15.32039  32.2141
BM_sendVec_binder32     38154    18215    38240    32.07213  67.1798
BM_sendVec_binder64     39093    18809    36142    59.16885  122.977
BM_sendVec_binder128    40169    19188    36461    116.1843  243.2253
BM_sendVec_binder256    40695    19559    35951    226.1569  470.5484
BM_sendVec_binder512    41446    20211    34259    423.2159  867.8743
BM_sendVec_binder1024   44040    22939    28904    672.0639  1290.278
BM_sendVec_binder2048   47817    25821    26595    1139.063  2109.393
BM_sendVec_binder4096   54749    30905    22742    1701.423  3014.115
BM_sendVec_binder8192   68316    42017    16684    2000.634  3252.858
BM_sendVec_binder16384  95435    64081    10961    1881.752  2802.469
BM_sendVec_binder32768  148232  107504     6510    1439.093  1984.295
BM_sendVec_binder65536  326499  229874     3178    637.8991  906.0329
NORAML TEST                                 SUM    10355.79  17188.15
stressapptest eat 2G                        SUM    10088.39  16625.97

Sample with kvcalloc():
adb shell stop/ kvcalloc /8+256G
----------------------------------------------------------------------
Benchmark                Time     CPU   Iterations  TH-PUT  TH-PUTCPU
                         (ns)     (ns)              (GB/s)    (GB/s)
----------------------------------------------------------------------
BM_sendVec_binder4       39673    18832    36598    3.689965  7.773577
BM_sendVec_binder8       39869    18969    37188    7.462038  15.68369
BM_sendVec_binder16      39774    18896    36627    14.73405  31.01355
BM_sendVec_binder32      40225    19125    36995    29.43045  61.90013
BM_sendVec_binder64      40549    19529    35148    55.47544  115.1862
BM_sendVec_binder128     41580    19892    35384    108.9262  227.6871
BM_sendVec_binder256     41584    20059    34060    209.6806  434.6857
BM_sendVec_binder512     42829    20899    32493    388.4381  796.0389
BM_sendVec_binder1024    45037    23360    29251    665.0759  1282.236
BM_sendVec_binder2048    47853    25761    27091    1159.433  2153.735
BM_sendVec_binder4096    55574    31745    22405    1651.328  2890.877
BM_sendVec_binder8192    70706    43693    16400    1900.105  3074.836
BM_sendVec_binder16384   96161    64362    10793    1838.921  2747.468
BM_sendVec_binder32768  147875   107292     6296    1395.147  1922.858
BM_sendVec_binder65536  330324   232296     3053    605.7126  861.3209
NORAML TEST                                 SUM     10033.56  16623.35
stressapptest eat 2G                        SUM      9958.43  16497.55

Signed-off-by: Lei Liu <liulei.rjpt@vivo.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20240619113841.3362-1-liulei.rjpt@vivo.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agobinder: use bitmap for faster descriptor lookup
Carlos Llamas [Wed, 12 Jun 2024 04:25:13 +0000 (04:25 +0000)]
binder: use bitmap for faster descriptor lookup

When creating new binder references, the driver assigns a descriptor id
that is shared with userspace. Regrettably, the driver needs to keep the
descriptors small enough to accommodate userspace potentially using them
as Vector indexes. Currently, the driver performs a linear search on the
rb-tree of references to find the smallest available descriptor id. This
approach, however, scales poorly as the number of references grows.

This patch introduces the usage of bitmaps to boost the performance of
descriptor assignments. This optimization results in notable performance
gains, particularly in processes with a large number of references. The
following benchmark with 100,000 references showcases the difference in
latency between the dbitmap implementation and the legacy approach:

  [  587.145098] get_ref_desc_olocked: 15us (dbitmap on)
  [  602.788623] get_ref_desc_olocked: 47343us (dbitmap off)

Note the bitmap size is dynamically adjusted in line with the number of
references, ensuring efficient memory usage. In cases where growing the
bitmap is not possible, the driver falls back to the slow legacy method.

A previous attempt to solve this issue was proposed in [1]. However,
such method involved adding new ioctls which isn't great, plus older
userspace code would not have benefited from the optimizations either.

Link: https://lore.kernel.org/all/20240417191418.1341988-1-cmllamas@google.com/
Cc: Tim Murray <timmurray@google.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Martijn Coenen <maco@android.com>
Cc: Todd Kjos <tkjos@android.com>
Cc: John Stultz <jstultz@google.com>
Cc: Steven Moreland <smoreland@google.com>
Suggested-by: Nick Chen <chenjia3@oppo.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20240612042535.1556708-1-cmllamas@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agoMerge tag 'coresight-next-v6.11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel...
Greg Kroah-Hartman [Wed, 3 Jul 2024 13:50:32 +0000 (15:50 +0200)]
Merge tag 'coresight-next-v6.11' of ssh://gitolite./linux/kernel/git/coresight/linux into char-misc-next

Suzuki writes:

coresight: Updates for v6.11

Coresight/hwtracing subsystem updates targeting v6.11 includes a few minor
fixes and cleanups

Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
* tag 'coresight-next-v6.11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/coresight/linux:
  hwtracing: use for_each_endpoint_of_node()
  coresight: constify the struct device_type usage
  coresight: tmc: Remove duplicated include in coresight-tmc-core.c
  coresight: Fix ref leak when of_coresight_parse_endpoint() fails

11 months agoMerge tag 'counter-updates-for-6.11' of ssh://gitolite.kernel.org/pub/scm/linux/kerne...
Greg Kroah-Hartman [Wed, 3 Jul 2024 13:49:51 +0000 (15:49 +0200)]
Merge tag 'counter-updates-for-6.11' of ssh://gitolite./linux/kernel/git/wbg/counter into char-misc-next

William writes:

Counter updates for 6.11

Primarily consists of cleanups and updates for ti-eqep; ti-eqep now
supports over/underflow events and can be build for K3 devices. In
addition, ftm-quaddec is updated to add a missing MODULE_DESCRIPTION()
macro.

* tag 'counter-updates-for-6.11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/wbg/counter:
  counter: ti-eqep: Allow eQEP driver to be built for K3 devices
  counter/ti-eqep: Add new ti-am62-eqep compatible
  dt-bindings: counter: Add new ti,am62-eqep compatible
  counter: ti-eqep: remove counter_priv() wrapper
  counter: ti-eqep: remove unused struct member
  counter: ti-eqep: implement over/underflow events
  counter: ftm-quaddec: add missing MODULE_DESCRIPTION() macro

11 months agoMerge tag 'w1-drv-6.11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/krzk...
Greg Kroah-Hartman [Wed, 3 Jul 2024 13:49:05 +0000 (15:49 +0200)]
Merge tag 'w1-drv-6.11' of ssh://gitolite./linux/kernel/git/krzk/linux-w1 into char-misc-next

Krzysztof writes:

1-Wire bus drivers for v6.11

Just two cleanups for W1 core code.

* tag 'w1-drv-6.11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/krzk/linux-w1:
  w1: Drop allocation error message
  w1: Add missing newline and fix typos in w1_bus_master comment

11 months agoMerge tag 'fpga-for-6.11-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Wed, 3 Jul 2024 13:48:09 +0000 (15:48 +0200)]
Merge tag 'fpga-for-6.11-rc1' of ssh://gitolite./linux/kernel/git/fpga/linux-fpga into char-misc-next

Xu writes:

FPGA Manager changes for 6.11-rc1

FPGA unit test:

- Macro's change re-enables FPGA KUnit test suites been configured as
  loadable module.

Altera:

- David's change removes unused structure definition.

All patches have been reviewed on the mailing list, and have been in the
last linux-next releases (as part of our for-next branch).

Signed-off-by: Xu Yilun <yilun.xu@intel.com>
* tag 'fpga-for-6.11-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/fpga/linux-fpga:
  fpga: altera-fpga2sdram: remove unused struct 'prop_map'
  Revert "fpga: disable KUnit test suites when module support is enabled"

11 months agoiio: adc: ad7173: Fix uninitialized symbol is_current_chan
Jonathan Cameron [Tue, 2 Jul 2024 18:43:46 +0000 (19:43 +0100)]
iio: adc: ad7173: Fix uninitialized symbol is_current_chan

Move the definition down and make it a boolean that is initialized
to false.

Fixes: 13d12e3ad12d ("iio: adc: ad7173: Add support for AD411x devices")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202406232046.DKfBJq6o-lkp@intel.com/
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoiio: adc: Add support for MediaTek MT6357/8/9 Auxiliary ADC
AngeloGioacchino Del Regno [Tue, 4 Jun 2024 12:30:07 +0000 (14:30 +0200)]
iio: adc: Add support for MediaTek MT6357/8/9 Auxiliary ADC

Add a driver to support reading the Auxiliary ADC IP found in the
MediaTek MT6357, MT6358 and MT6359 Power Management ICs, featuring
a different register layout, configuration reset and ADC reading
sequence from the other already supported MediaTek SoC or PMIC
(aux)ADC HW.

This driver provides multiple ADC channels for system monitoring,
such as battery voltage, PMIC temperature, PMIC-internal voltage
regulators temperature, and others.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://patch.msgid.link/20240604123008.327424-5-angelogioacchino.delregno@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agomath.h: Add unsigned 8 bits fractional numbers type
AngeloGioacchino Del Regno [Tue, 4 Jun 2024 12:30:06 +0000 (14:30 +0200)]
math.h: Add unsigned 8 bits fractional numbers type

Some users may be requiring only rather small numbers as both
numerator and denominator: add signed and unsigned 8 bits
structs {s8,u8}_fract.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://patch.msgid.link/20240604123008.327424-4-angelogioacchino.delregno@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agodt-bindings: iio: adc: Add MediaTek MT6359 PMIC AUXADC
AngeloGioacchino Del Regno [Tue, 4 Jun 2024 12:30:04 +0000 (14:30 +0200)]
dt-bindings: iio: adc: Add MediaTek MT6359 PMIC AUXADC

Add a new binding for the MT6350 Series (MT6357/8/9) PMIC AUXADC,
providing various ADC channels for both internal temperatures and
voltages, audio accessory detection (hp/mic/hp+mic and buttons,
usually on a 3.5mm jack) other than some basic battery statistics
on boards where the battery is managed by this PMIC.

Also add the necessary dt-binding headers for devicetree consumers.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://patch.msgid.link/20240604123008.327424-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoMerge 6.10-rc6 into char-misc-next
Greg Kroah-Hartman [Mon, 1 Jul 2024 11:55:39 +0000 (13:55 +0200)]
Merge 6.10-rc6 into char-misc-next

We need the char/misc/iio fixes in here as well to build on top of.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 months agocounter: ti-eqep: Allow eQEP driver to be built for K3 devices
Judith Mendez [Wed, 12 Jun 2024 13:55:38 +0000 (08:55 -0500)]
counter: ti-eqep: Allow eQEP driver to be built for K3 devices

TI K3 SoC's support eQEP hardware, so add ARCH_K3 to the depends
so the TI eQEP driver can be built for K3 devices.

Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: David Lechner <david@lechnology.com>
Link: https://lore.kernel.org/r/20240612135538.2447938-9-jm@ti.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
11 months agohwtracing: use for_each_endpoint_of_node()
Kuninori Morimoto [Mon, 1 Jul 2024 02:32:35 +0000 (02:32 +0000)]
hwtracing: use for_each_endpoint_of_node()

We already have for_each_endpoint_of_node(), don't use
of_graph_get_next_endpoint() directly. Replace it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/878qyl970c.wl-kuninori.morimoto.gx@renesas.com
11 months agocounter/ti-eqep: Add new ti-am62-eqep compatible
Judith Mendez [Wed, 12 Jun 2024 13:55:32 +0000 (08:55 -0500)]
counter/ti-eqep: Add new ti-am62-eqep compatible

Add new compatible for ti-am62-eqep for TI K3 SoC's.

Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: David Lechner <david@lechnology.com>
Link: https://lore.kernel.org/r/20240612135538.2447938-3-jm@ti.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
11 months agodt-bindings: counter: Add new ti,am62-eqep compatible
Judith Mendez [Wed, 12 Jun 2024 13:55:31 +0000 (08:55 -0500)]
dt-bindings: counter: Add new ti,am62-eqep compatible

Add new compatible ti,am62-eqep for TI K3 devices. If a device
uses this compatible, require power-domains property.

Since there is only one functional and interface clock for eqep,
clock-names is not really required, so removed from required
section, make it optional for ti,am3352-eqep compatible, and
update the example.

The clock-name also changed for TI K3 SoCs so do not allow
clock-names property for the new compatible.

Signed-off-by: Judith Mendez <jm@ti.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: David Lechner <david@lechnology.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240612135538.2447938-2-jm@ti.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
11 months agocounter: ti-eqep: remove counter_priv() wrapper
David Lechner [Sun, 9 Jun 2024 20:06:16 +0000 (15:06 -0500)]
counter: ti-eqep: remove counter_priv() wrapper

The ti_eqep_count_from_counter() function is just a wrapper around
counter_priv(). counter_priv() can be used directly, so we don't need
the wrapper function. Remove it.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240609-ti-eqep-cleanup-v1-2-9d67939c763a@baylibre.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
11 months agocounter: ti-eqep: remove unused struct member
David Lechner [Sun, 9 Jun 2024 20:06:15 +0000 (15:06 -0500)]
counter: ti-eqep: remove unused struct member

Since commit 8817c2d03a85 ("counter: ti-eqep: Convert to counter_priv()
wrapper") the counter field in struct ti_eqep_cnt is not used anymore.
Remove it.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Judith Mendez <jm@ti.com>
Link: https://lore.kernel.org/r/20240609-ti-eqep-cleanup-v1-1-9d67939c763a@baylibre.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
11 months agocounter: ti-eqep: implement over/underflow events
David Lechner [Sun, 9 Jun 2024 21:49:33 +0000 (16:49 -0500)]
counter: ti-eqep: implement over/underflow events

This adds support to the TI eQEP counter driver for subscribing to
overflow and underflow events using the counter chrdev interface.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240609-counter-ti-eqep-over-under-events-v1-1-74fe1632f5ab@baylibre.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
11 months agocounter: ftm-quaddec: add missing MODULE_DESCRIPTION() macro
Jeff Johnson [Sun, 2 Jun 2024 22:05:20 +0000 (15:05 -0700)]
counter: ftm-quaddec: add missing MODULE_DESCRIPTION() macro

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/counter/ftm-quaddec.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.

Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240602-md-ftm-quaddec-v1-1-1bbdf705ad31@quicinc.com
Signed-off-by: William Breathitt Gray <wbg@kernel.org>
11 months agoLinux 6.10-rc6
Linus Torvalds [Sun, 30 Jun 2024 21:40:44 +0000 (14:40 -0700)]
Linux 6.10-rc6

11 months agoMerge tag 'ata-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/libata...
Linus Torvalds [Sun, 30 Jun 2024 21:32:24 +0000 (14:32 -0700)]
Merge tag 'ata-6.10-rc6' of git://git./linux/kernel/git/libata/linux

Pull ata fixes from Niklas Cassel:

 - Add NOLPM quirk for for all Crucial BX SSD1 models.

   Considering that we now have had bug reports for 3 different BX SSD1
   variants from Crucial with the same product name, make the quirk more
   inclusive, to catch more device models from the same generation.

 - Fix a trivial NULL pointer dereference in the error path for
   ata_host_release().

 - Create a ata_port_free(), so that we don't miss freeing ata_port
   struct members when freeing a struct ata_port.

 - Fix a trivial double free in the error path for ata_host_alloc().

 - Ensure that we remove the libata "remapped NVMe device count" sysfs
   entry on .probe() error.

* tag 'ata-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
  ata: ahci: Clean up sysfs file on error
  ata: libata-core: Fix double free on error
  ata,scsi: libata-core: Do not leak memory for ata_port struct members
  ata: libata-core: Fix null pointer dereference on error
  ata: libata-core: Add ATA_HORKAGE_NOLPM for all Crucial BX SSD1 models

11 months agoata: ahci: Clean up sysfs file on error
Niklas Cassel [Sat, 29 Jun 2024 12:42:14 +0000 (14:42 +0200)]
ata: ahci: Clean up sysfs file on error

.probe() (ahci_init_one()) calls sysfs_add_file_to_group(), however,
if probe() fails after this call, we currently never call
sysfs_remove_file_from_group().

(The sysfs_remove_file_from_group() call in .remove() (ahci_remove_one())
does not help, as .remove() is not called on .probe() error.)

Thus, if probe() fails after the sysfs_add_file_to_group() call, the next
time we insmod the module we will get:

sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:04.0/remapped_nvme'
CPU: 11 PID: 954 Comm: modprobe Not tainted 6.10.0-rc5 #43
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x5d/0x80
 sysfs_warn_dup.cold+0x17/0x23
 sysfs_add_file_mode_ns+0x11a/0x130
 sysfs_add_file_to_group+0x7e/0xc0
 ahci_init_one+0x31f/0xd40 [ahci]

Fixes: 894fba7f434a ("ata: ahci: Add sysfs attribute to show remapped NVMe device count")
Cc: stable@vger.kernel.org
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240629124210.181537-10-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
11 months agoata: libata-core: Fix double free on error
Niklas Cassel [Sat, 29 Jun 2024 12:42:13 +0000 (14:42 +0200)]
ata: libata-core: Fix double free on error

If e.g. the ata_port_alloc() call in ata_host_alloc() fails, we will jump
to the err_out label, which will call devres_release_group().
devres_release_group() will trigger a call to ata_host_release().
ata_host_release() calls kfree(host), so executing the kfree(host) in
ata_host_alloc() will lead to a double free:

kernel BUG at mm/slub.c:553!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
CPU: 11 PID: 599 Comm: (udev-worker) Not tainted 6.10.0-rc5 #47
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014
RIP: 0010:kfree+0x2cf/0x2f0
Code: 5d 41 5e 41 5f 5d e9 80 d6 ff ff 4d 89 f1 41 b8 01 00 00 00 48 89 d9 48 89 da
RSP: 0018:ffffc90000f377f0 EFLAGS: 00010246
RAX: ffff888112b1f2c0 RBX: ffff888112b1f2c0 RCX: ffff888112b1f320
RDX: 000000000000400b RSI: ffffffffc02c9de5 RDI: ffff888112b1f2c0
RBP: ffffc90000f37830 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90000f37610 R11: 617461203a736b6e R12: ffffea00044ac780
R13: ffff888100046400 R14: ffffffffc02c9de5 R15: 0000000000000006
FS:  00007f2f1cabe980(0000) GS:ffff88813b380000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2f1c3acf75 CR3: 0000000111724000 CR4: 0000000000750ef0
PKRU: 55555554
Call Trace:
 <TASK>
 ? __die_body.cold+0x19/0x27
 ? die+0x2e/0x50
 ? do_trap+0xca/0x110
 ? do_error_trap+0x6a/0x90
 ? kfree+0x2cf/0x2f0
 ? exc_invalid_op+0x50/0x70
 ? kfree+0x2cf/0x2f0
 ? asm_exc_invalid_op+0x1a/0x20
 ? ata_host_alloc+0xf5/0x120 [libata]
 ? ata_host_alloc+0xf5/0x120 [libata]
 ? kfree+0x2cf/0x2f0
 ata_host_alloc+0xf5/0x120 [libata]
 ata_host_alloc_pinfo+0x14/0xa0 [libata]
 ahci_init_one+0x6c9/0xd20 [ahci]

Ensure that we will not call kfree(host) twice, by performing the kfree()
only if the devres_open_group() call failed.

Fixes: dafd6c496381 ("libata: ensure host is free'd on error exit paths")
Cc: stable@vger.kernel.org
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240629124210.181537-9-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
11 months agoata,scsi: libata-core: Do not leak memory for ata_port struct members
Niklas Cassel [Sat, 29 Jun 2024 12:42:12 +0000 (14:42 +0200)]
ata,scsi: libata-core: Do not leak memory for ata_port struct members

libsas is currently not freeing all the struct ata_port struct members,
e.g. ncq_sense_buf for a driver supporting Command Duration Limits (CDL).

Add a function, ata_port_free(), that is used to free a ata_port,
including its struct members. It makes sense to keep the code related to
freeing a ata_port in its own function, which will also free all the
struct members of struct ata_port.

Fixes: 18bd7718b5c4 ("scsi: ata: libata: Handle completion of CDL commands using policy 0xD")
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240629124210.181537-8-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
11 months agoata: libata-core: Fix null pointer dereference on error
Niklas Cassel [Sat, 29 Jun 2024 12:42:11 +0000 (14:42 +0200)]
ata: libata-core: Fix null pointer dereference on error

If the ata_port_alloc() call in ata_host_alloc() fails,
ata_host_release() will get called.

However, the code in ata_host_release() tries to free ata_port struct
members unconditionally, which can lead to the following:

BUG: unable to handle page fault for address: 0000000000003990
PGD 0 P4D 0
Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 10 PID: 594 Comm: (udev-worker) Not tainted 6.10.0-rc5 #44
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014
RIP: 0010:ata_host_release.cold+0x2f/0x6e [libata]
Code: e4 4d 63 f4 44 89 e2 48 c7 c6 90 ad 32 c0 48 c7 c7 d0 70 33 c0 49 83 c6 0e 41
RSP: 0018:ffffc90000ebb968 EFLAGS: 00010246
RAX: 0000000000000041 RBX: ffff88810fb52e78 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88813b3218c0 RDI: ffff88813b3218c0
RBP: ffff88810fb52e40 R08: 0000000000000000 R09: 6c65725f74736f68
R10: ffffc90000ebb738 R11: 73692033203a746e R12: 0000000000000004
R13: 0000000000000000 R14: 0000000000000011 R15: 0000000000000006
FS:  00007f6cc55b9980(0000) GS:ffff88813b300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000003990 CR3: 00000001122a2000 CR4: 0000000000750ef0
PKRU: 55555554
Call Trace:
 <TASK>
 ? __die_body.cold+0x19/0x27
 ? page_fault_oops+0x15a/0x2f0
 ? exc_page_fault+0x7e/0x180
 ? asm_exc_page_fault+0x26/0x30
 ? ata_host_release.cold+0x2f/0x6e [libata]
 ? ata_host_release.cold+0x2f/0x6e [libata]
 release_nodes+0x35/0xb0
 devres_release_group+0x113/0x140
 ata_host_alloc+0xed/0x120 [libata]
 ata_host_alloc_pinfo+0x14/0xa0 [libata]
 ahci_init_one+0x6c9/0xd20 [ahci]

Do not access ata_port struct members unconditionally.

Fixes: 633273a3ed1c ("libata-pmp: hook PMP support and enable it")
Cc: stable@vger.kernel.org
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20240629124210.181537-7-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
11 months agoMerge tag 'kbuild-fixes-v6.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 30 Jun 2024 17:00:01 +0000 (10:00 -0700)]
Merge tag 'kbuild-fixes-v6.10-3' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Remove the executable bit from installed DTB files

 - Escape $ in subshell execution in the debian-orig target

 - Fix RPM builds with CONFIG_MODULES=n

 - Fix xconfig with the O= option

 - Fix scripts_gdb with the O= option

* tag 'kbuild-fixes-v6.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: scripts/gdb: bring the "abspath" back
  kbuild: Use $(obj)/%.cc to fix host C++ module builds
  kbuild: rpm-pkg: fix build error with CONFIG_MODULES=n
  kbuild: Fix build target deb-pkg: ln: failed to create hard link
  kbuild: doc: Update default INSTALL_MOD_DIR from extra to updates
  kbuild: Install dtb files as 0644 in Makefile.dtbinst

11 months agox86-32: fix cmpxchg8b_emu build error with clang
Linus Torvalds [Wed, 26 Jun 2024 00:50:04 +0000 (17:50 -0700)]
x86-32: fix cmpxchg8b_emu build error with clang

The kernel test robot reported that clang no longer compiles the 32-bit
x86 kernel in some configurations due to commit 95ece48165c1
("locking/atomic/x86: Rewrite x86_32 arch_atomic64_{,fetch}_{and,or,xor}()
functions").

The build fails with

  arch/x86/include/asm/cmpxchg_32.h:149:9: error: inline assembly requires more registers than available

and the reason seems to be that not only does the cmpxchg8b instruction
need four fixed registers (EDX:EAX and ECX:EBX), with the emulation
fallback the inline asm also wants a fifth fixed register for the
address (it uses %esi for that, but that's just a software convention
with cmpxchg8b_emu).

Avoiding using another pointer input to the asm (and just forcing it to
use the "0(%esi)" addressing that we end up requiring for the sw
fallback) seems to fix the issue.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406230912.F6XFIyA6-lkp@intel.com/
Fixes: 95ece48165c1 ("locking/atomic/x86: Rewrite x86_32 arch_atomic64_{,fetch}_{and,or,xor}() functions")
Link: https://lore.kernel.org/all/202406230912.F6XFIyA6-lkp@intel.com/
Suggested-by: Uros Bizjak <ubizjak@gmail.com>
Reviewed-and-Tested-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 months agoMerge tag 'char-misc-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sun, 30 Jun 2024 16:16:08 +0000 (09:16 -0700)]
Merge tag 'char-misc-6.10-rc6' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some small driver fixes for 6.10-rc6. Included in here are:

   - IIO driver fixes for reported issues

   - Counter driver fix for a reported problem.

  All of these have been in linux-next this week with no reported
  issues"

* tag 'char-misc-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  counter: ti-eqep: enable clock at probe
  iio: chemical: bme680: Fix sensor data read operation
  iio: chemical: bme680: Fix overflows in compensate() functions
  iio: chemical: bme680: Fix calibration data variable
  iio: chemical: bme680: Fix pressure value output
  iio: humidity: hdc3020: fix hysteresis representation
  iio: dac: fix ad9739a random config compile error
  iio: accel: fxls8962af: select IIO_BUFFER & IIO_KFIFO_BUF
  iio: adc: ad7266: Fix variable checking bug
  iio: xilinx-ams: Don't include ams_ctrl_channels in scan_mask

11 months agoMerge tag 'staging-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 30 Jun 2024 16:11:59 +0000 (09:11 -0700)]
Merge tag 'staging-6.10-rc6' of git://git./linux/kernel/git/gregkh/staging

Pull staging driver fixes from Greg KH:
 "Here are two small staging driver fixes for 6.10-rc6, both for the
  vc04_services drivers:

   - build fix if CONFIG_DEBUGFS was not set

   - initialization check fix that was much reported.

  Both of these have been in linux-next this week with no reported
  issues"

* tag 'staging-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: vchiq_debugfs: Fix build if CONFIG_DEBUG_FS is not set
  staging: vc04_services: vchiq_arm: Fix initialisation check

11 months agoMerge tag 'tty-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sun, 30 Jun 2024 15:57:43 +0000 (08:57 -0700)]
Merge tag 'tty-6.10-rc6' of git://git./linux/kernel/git/gregkh/tty

Pull tty / serial / console fixes from Greg KH:
 "Here are a bunch of fixes/reverts for 6.10-rc6.  Include in here are:

   - revert the bunch of tty/serial/console changes that landed in -rc1
     that didn't quite work properly yet.

     Everyone agreed to just revert them for now and will work on making
     them better for a future release instead of trying to quick fix the
     existing changes this late in the release cycle

   - 8250 driver port count bugfix

   - Other tiny serial port bugfixes for reported issues

  All of these have been in linux-next this week with no reported
  issues"

* tag 'tty-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Revert "printk: Save console options for add_preferred_console_match()"
  Revert "printk: Don't try to parse DEVNAME:0.0 console options"
  Revert "printk: Flag register_console() if console is set on command line"
  Revert "serial: core: Add support for DEVNAME:0.0 style naming for kernel console"
  Revert "serial: core: Handle serial console options"
  Revert "serial: 8250: Add preferred console in serial8250_isa_init_ports()"
  Revert "Documentation: kernel-parameters: Add DEVNAME:0.0 format for serial ports"
  Revert "serial: 8250: Fix add preferred console for serial8250_isa_init_ports()"
  Revert "serial: core: Fix ifdef for serial base console functions"
  serial: bcm63xx-uart: fix tx after conversion to uart_port_tx_limited()
  serial: core: introduce uart_port_tx_limited_flags()
  Revert "serial: core: only stop transmit when HW fifo is empty"
  serial: imx: set receiver level before starting uart
  tty: mcf: MCF54418 has 10 UARTS
  serial: 8250_omap: Implementation of Errata i2310
  tty: serial: 8250: Fix port count mismatch with the device

11 months agoMerge tag 'usb-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 30 Jun 2024 15:54:24 +0000 (08:54 -0700)]
Merge tag 'usb-6.10-rc6' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a handful of small USB driver fixes for 6.10-rc6 to resolve
  some reported issues. Included in here are:

   - typec driver bugfixes

   - usb gadget driver reverts for commits that were reported to have
     problems

   - resource leak bugfix

   - gadget driver bugfixes

   - dwc3 driver bugfixes

   - usb atm driver bugfix for when syzbot got loose on it

  All of these have been in linux-next this week with no reported issues"

* tag 'usb-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: dwc3: core: Workaround for CSR read timeout
  Revert "usb: gadget: u_ether: Replace netif_stop_queue with netif_device_detach"
  Revert "usb: gadget: u_ether: Re-attach netif device to mirror detachment"
  usb: gadget: aspeed_udc: fix device address configuration
  usb: dwc3: core: remove lock of otg mode during gadget suspend/resume to avoid deadlock
  usb: typec: ucsi: glink: fix child node release in probe function
  usb: musb: da8xx: fix a resource leak in probe()
  usb: typec: ucsi_acpi: Add LG Gram quirk
  usb: ucsi: stm32: fix command completion handling
  usb: atm: cxacru: fix endpoint checking in cxacru_bind()
  usb: gadget: printer: fix races against disable
  usb: gadget: printer: SS+ support

11 months agoMerge tag 'smp_urgent_for_v6.10_rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 30 Jun 2024 15:41:42 +0000 (08:41 -0700)]
Merge tag 'smp_urgent_for_v6.10_rc6' of git://git./linux/kernel/git/tip/tip

Pull smp fixes from Borislav Petkov:

 - Fix "nosmp" and "maxcpus=0" after the parallel CPU bringup work went
   in and broke them

 - Make sure CPU hotplug dynamic prepare states are actually executed

* tag 'smp_urgent_for_v6.10_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu: Fix broken cmdline "nosmp" and "maxcpus=0"
  cpu/hotplug: Fix dynstate assignment in __cpuhp_setup_state_cpuslocked()

11 months agoMerge tag 'irq_urgent_for_v6.10_rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 30 Jun 2024 15:36:13 +0000 (08:36 -0700)]
Merge tag 'irq_urgent_for_v6.10_rc6' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Borislav Petkov:

 - Make sure multi-bridge machines get all eiointc interrupt controllers
   initialized even if the number of CPUs has been limited by a cmdline
   param

 - Make sure interrupt lines on liointc hw are configured properly even
   when interrupt routing changes

 - Avoid use-after-free in the error path of the MSI init code

* tag 'irq_urgent_for_v6.10_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  PCI/MSI: Fix UAF in msi_capability_init
  irqchip/loongson-liointc: Set different ISRs for different cores
  irqchip/loongson-eiointc: Use early_cpu_to_node() instead of cpu_to_node()

11 months agoMerge tag 'timers_urgent_for_v6.10_rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 30 Jun 2024 15:31:08 +0000 (08:31 -0700)]
Merge tag 'timers_urgent_for_v6.10_rc6' of git://git./linux/kernel/git/tip/tip

Pull timer fix from Borislav Petkov:

 - Warn when an hrtimer doesn't get a callback supplied

* tag 'timers_urgent_for_v6.10_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  hrtimer: Prevent queuing of hrtimer without a function callback

11 months agoMerge tag 'linux-watchdog-6.10-rc-fixes' of git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Sun, 30 Jun 2024 15:28:20 +0000 (08:28 -0700)]
Merge tag 'linux-watchdog-6.10-rc-fixes' of git://linux-watchdog.org/linux-watchdog

Pull watchdog fixes from Wim Van Sebroeck:

 - lenovo_se10_wdt: add HAS_IOPORT dependency

 - add missing MODULE_DESCRIPTION() macros

* tag 'linux-watchdog-6.10-rc-fixes' of git://www.linux-watchdog.org/linux-watchdog:
  watchdog: add missing MODULE_DESCRIPTION() macros
  watchdog: lenovo_se10_wdt: add HAS_IOPORT dependency

11 months agoiio: common: scmi_iio: convert to dev_err_probe()
Nuno Sa [Thu, 6 Jun 2024 07:22:40 +0000 (09:22 +0200)]
iio: common: scmi_iio: convert to dev_err_probe()

Make use of dev_err_probe() and dev_err_ptr_probe() to simplify error paths
during probe.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240606-dev-add_dev_errp_probe-v3-4-51bb229edd79@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoiio: backend: make use of dev_err_cast_probe()
Nuno Sa [Thu, 6 Jun 2024 07:22:39 +0000 (09:22 +0200)]
iio: backend: make use of dev_err_cast_probe()

Using dev_err_cast_probe() to simplify the code.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240606-dev-add_dev_errp_probe-v3-3-51bb229edd79@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoiio: temperature: ltc2983: convert to dev_err_probe()
Nuno Sa [Thu, 6 Jun 2024 07:22:38 +0000 (09:22 +0200)]
iio: temperature: ltc2983: convert to dev_err_probe()

Use dev_err_probe() (and variants) in the probe() path. While at it, made
some simple improvements:
 * Explicitly included the err.h and errno.h headers;
 * Removed some unnecessary line breaks;
 * Removed a redundant 'else';
 * Added some missing \n to prink.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240606-dev-add_dev_errp_probe-v3-2-51bb229edd79@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agodev_printk: add new dev_err_probe() helpers
Nuno Sa [Thu, 6 Jun 2024 07:22:37 +0000 (09:22 +0200)]
dev_printk: add new dev_err_probe() helpers

This is similar to dev_err_probe() but for cases where an ERR_PTR() or
ERR_CAST() is to be returned simplifying patterns like:

dev_err_probe(dev, ret, ...);
return ERR_PTR(ret)
or
dev_err_probe(dev, PTR_ERR(ptr), ...);
return ERR_CAST(ptr)

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240606-dev-add_dev_errp_probe-v3-1-51bb229edd79@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoiio: xilinx-ams: Add labels
Sean Anderson [Thu, 20 Jun 2024 20:48:42 +0000 (16:48 -0400)]
iio: xilinx-ams: Add labels

Label all the channels using names from the reference manual. Some of
the "control" channels are duplicates of other channels. The reference
manual describes it like:

> The AMS register set includes several measurement registers that are
> written to by the PS SYSMON unit using the single-channel mode
> (sequencer off). These voltage measurements are performed using the
> unipolar sampling circuit with a 0 to 3V range and do not have alarms
> or minimum/maximum registers.

So I think these really are measuring the same voltages but in a
different location. In which case, sharing labels makes sense to me.

Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20240620204842.817237-1-sean.anderson@linux.dev
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoiio: adc: ad7944: use devm_spi_optimize_message()
David Lechner [Mon, 24 Jun 2024 20:46:08 +0000 (15:46 -0500)]
iio: adc: ad7944: use devm_spi_optimize_message()

Use new devm_spi_optimize_message() helper to simplify repeated code
in the ad7944 driver.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240624-devm_spi_optimize_message-v3-2-912138c27b66@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoMerge tag 'spi-devm-optimize' into togreg
Jonathan Cameron [Sun, 30 Jun 2024 10:36:58 +0000 (11:36 +0100)]
Merge tag 'spi-devm-optimize' into togreg

spi: add devm_spi_optimize_message() helper

Helper from David Lechner <dlechner@baylibre.com>:

    In the IIO subsystem, we are finding that it is common to call
    spi_optimize_message() during driver probe since the SPI message
    doesn't change for the lifetime of the driver. This patch adds a
    devm_spi_optimize_message() helper to simplify this common pattern.

11 months agoDocumentation: iio: Document high-speed DMABUF based API
Paul Cercueil [Thu, 20 Jun 2024 12:27:25 +0000 (14:27 +0200)]
Documentation: iio: Document high-speed DMABUF based API

Document the new DMABUF based API.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Co-developed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://patch.msgid.link/20240620122726.41232-7-paul@crapouillou.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoiio: buffer-dmaengine: Support new DMABUF based userspace API
Paul Cercueil [Thu, 20 Jun 2024 12:27:24 +0000 (14:27 +0200)]
iio: buffer-dmaengine: Support new DMABUF based userspace API

Use the functions provided by the buffer-dma core to implement the
DMABUF userspace API in the buffer-dmaengine IIO buffer implementation.

Since we want to be able to transfer an arbitrary number of bytes and
not necesarily the full DMABUF, the associated scatterlist is converted
to an array of DMA addresses + lengths, which is then passed to
dmaengine_prep_slave_dma_array().

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Co-developed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240620122726.41232-6-paul@crapouillou.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoiio: buffer-dma: Enable support for DMABUFs
Paul Cercueil [Thu, 20 Jun 2024 12:27:23 +0000 (14:27 +0200)]
iio: buffer-dma: Enable support for DMABUFs

Implement iio_dma_buffer_attach_dmabuf(), iio_dma_buffer_detach_dmabuf()
and iio_dma_buffer_transfer_dmabuf(), which can then be used by the IIO
DMA buffer implementations.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Co-developed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240620122726.41232-5-paul@crapouillou.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoiio: core: Add new DMABUF interface infrastructure
Paul Cercueil [Thu, 20 Jun 2024 12:27:22 +0000 (14:27 +0200)]
iio: core: Add new DMABUF interface infrastructure

Add the necessary infrastructure to the IIO core to support a new
optional DMABUF based interface.

With this new interface, DMABUF objects (externally created) can be
attached to a IIO buffer, and subsequently used for data transfer.

A userspace application can then use this interface to share DMABUF
objects between several interfaces, allowing it to transfer data in a
zero-copy fashion, for instance between IIO and the USB stack.

The userspace application can also memory-map the DMABUF objects, and
access the sample data directly. The advantage of doing this vs. the
read() interface is that it avoids an extra copy of the data between the
kernel and userspace. This is particularly userful for high-speed
devices which produce several megabytes or even gigabytes of data per
second.

As part of the interface, 3 new IOCTLs have been added:

IIO_BUFFER_DMABUF_ATTACH_IOCTL(int fd):
 Attach the DMABUF object identified by the given file descriptor to the
 buffer.

IIO_BUFFER_DMABUF_DETACH_IOCTL(int fd):
 Detach the DMABUF object identified by the given file descriptor from
 the buffer. Note that closing the IIO buffer's file descriptor will
 automatically detach all previously attached DMABUF objects.

IIO_BUFFER_DMABUF_ENQUEUE_IOCTL(struct iio_dmabuf *):
 Request a data transfer to/from the given DMABUF object. Its file
 descriptor, as well as the transfer size and flags are provided in the
 "iio_dmabuf" structure.

These three IOCTLs have to be performed on the IIO buffer's file
descriptor, obtained using the IIO_BUFFER_GET_FD_IOCTL() ioctl.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Co-developed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240620122726.41232-4-paul@crapouillou.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoMerge tag 'dmaengine_topic_dma_vec' into togreg
Jonathan Cameron [Sun, 30 Jun 2024 10:25:15 +0000 (11:25 +0100)]
Merge tag 'dmaengine_topic_dma_vec' into togreg

Dmaengine topic
 - New device_prep_peripheral_dma_vec, documentation and user

11 months agoMAINTAINERS: Update AD7192 driver maintainer
Alisa-Dariana Roman [Mon, 24 Jun 2024 12:49:41 +0000 (15:49 +0300)]
MAINTAINERS: Update AD7192 driver maintainer

Alexandru Tachici has not been active. Also the email address included
is not reachable anymore. I was assigned to work on the driver instead.

Remove Alexandru Tachici and add myself as maintainer of AD7192 driver.

Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20240624124941.113010-7-alisa.roman@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoiio: adc: ad7192: use devm_regulator_get_enable_read_voltage
David Lechner [Mon, 24 Jun 2024 12:49:36 +0000 (15:49 +0300)]
iio: adc: ad7192: use devm_regulator_get_enable_read_voltage

This makes use of the new devm_regulator_get_enable_read_voltage()
function to reduce boilerplate code.

Error messages have changed slightly since there are now fewer places
where we print an error. The rest of the logic of selecting which
supply to use as the reference voltage remains the same.

Also 1000 is replaced by MILLI in a few places for consistency.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20240624124941.113010-2-alisa.roman@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoMerge tag 'nfs-for-6.10-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Sat, 29 Jun 2024 20:48:24 +0000 (13:48 -0700)]
Merge tag 'nfs-for-6.10-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client fix from Trond Myklebust:

 - One more SUNRPC fix for the NFSv4.x backchannel timeouts

* tag 'nfs-for-6.10-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: Fix backchannel reply, again

11 months agoiio: st_sensors: relax WhoAmI check in st_sensors_verify_id()
Kaustabh Chakraborty [Tue, 25 Jun 2024 08:27:55 +0000 (13:57 +0530)]
iio: st_sensors: relax WhoAmI check in st_sensors_verify_id()

Hard matching against the WhoAmI values isn't ideal for using devices
which are compatible with existing ones. Instead of raising an error,
issue a warning instead, thus allowing the driver to continue probing.

Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Link: https://patch.msgid.link/20240625082800.62305-1-kauschluss@disroot.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoMAINTAINERS: Add AVAGO APDS9306
Subhajit Ghosh [Wed, 26 Jun 2024 13:52:31 +0000 (23:22 +0930)]
MAINTAINERS: Add AVAGO APDS9306

Add myself as maintainer of APDS9306 ambient light sensor driver.

Signed-off-by: Subhajit Ghosh <subhajit.ghosh@tweaklogic.com>
Link: https://patch.msgid.link/20240626135231.8937-1-subhajit.ghosh@tweaklogic.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoMerge tag 'xfs-6.10-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Sat, 29 Jun 2024 16:21:40 +0000 (09:21 -0700)]
Merge tag 'xfs-6.10-fixes-5' of git://git./fs/xfs/xfs-linux

Pull xfs fixes from Chandan Babu:

 - Always free only post-EOF delayed allocations for files with the
   XFS_DIFLAG_PREALLOC or APPEND flags set.

 - Do not align cow fork delalloc to cowextsz hint when running low on
   space.

 - Allow zero-size symlinks and directories as long as the link count is
   zero.

 - Change XFS_IOC_EXCHANGE_RANGE to be a _IOW only ioctl. This was ioctl
   was introduced during v6.10 developement cycle.

 - xfs_init_new_inode() now creates an attribute fork on a newly created
   inode even if ATTR feature flag is not enabled.

* tag 'xfs-6.10-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: honor init_xattrs in xfs_init_new_inode for !ATTR fs
  xfs: fix direction in XFS_IOC_EXCHANGE_RANGE
  xfs: allow unlinked symlinks and dirs with zero size
  xfs: restrict when we try to align cow fork delalloc to cowextsz hints
  xfs: fix freeing speculative preallocations for preallocated files

11 months agoMerge tag 'i2c-for-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sat, 29 Jun 2024 16:12:53 +0000 (09:12 -0700)]
Merge tag 'i2c-for-6.10-rc6' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "Two fixes for the testunit and and a fixup for the code reorganization
  of the previous wmt-driver"

* tag 'i2c-for-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: testunit: discard write requests while old command is running
  i2c: testunit: don't erase registers after STOP
  i2c: viai2c: turn common code into a proper module

11 months agoMerge tag 'platform-drivers-x86-v6.10-4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 29 Jun 2024 16:09:20 +0000 (09:09 -0700)]
Merge tag 'platform-drivers-x86-v6.10-4' of git://git./linux/kernel/git/pdx86/platform-drivers-x86

Pull x86 platform driver fixes from Hans de Goede:

 - Fix lg-laptop driver not working with 2024 LG laptop models

 - Add missing MODULE_DESCRIPTION() macros to various modules

 - nvsw-sn2201: Add check for platform_device_add_resources

* tag 'platform-drivers-x86-v6.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
  platform/x86: add missing MODULE_DESCRIPTION() macros
  platform/x86/intel: add missing MODULE_DESCRIPTION() macros
  platform/x86/siemens: add missing MODULE_DESCRIPTION() macros
  platform/x86: lg-laptop: Use ACPI device handle when evaluating WMAB/WMBB
  platform/x86: lg-laptop: Change ACPI device id
  platform/x86: lg-laptop: Remove LGEX0815 hotkey handling
  platform/x86: wireless-hotkey: Add support for LG Airplane Button
  platform/mellanox: nvsw-sn2201: Add check for platform_device_add_resources

11 months agoMerge tag 'mmc-v6.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Sat, 29 Jun 2024 16:03:19 +0000 (09:03 -0700)]
Merge tag 'mmc-v6.10-rc4' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:

 - moxart-mmc: Revert "mmc: moxart-mmc: Use sg_miter for PIO"

 - sdhci: Do not invert write-protect twice

 - sdhci: Do not lock spinlock around mmc_gpio_get_ro()

 - sdhci-pci/sdhci-pci-o2micro: Return proper error codes

 - sdhci-brcmstb: Fix support for erase/trim/discard

* tag 'mmc-v6.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci: Do not lock spinlock around mmc_gpio_get_ro()
  mmc: sdhci: Do not invert write-protect twice
  Revert "mmc: moxart-mmc: Use sg_miter for PIO"
  mmc: sdhci-brcmstb: check R1_STATUS for erase/trim/discard
  mmc: sdhci-pci-o2micro: Convert PCIBIOS_* return codes to errnos
  mmc: sdhci-pci: Convert PCIBIOS_* return codes to errnos

11 months agodt-bindings: iio: adc: adi,ad7606: comment and sort the compatible names
Guillaume Stols [Fri, 28 Jun 2024 14:48:20 +0000 (14:48 +0000)]
dt-bindings: iio: adc: adi,ad7606: comment and sort the compatible names

AD7606-8 is referred to as AD7606 by Analog Devices. This comment aims
to avoid confusion. Also the compatible names were not sorted by
alphabetical order.

Signed-off-by: Guillaume Stols <gstols@baylibre.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20240628-cleanup-ad7606-v2-2-96e02f90256d@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agodt-bindings: iio: adc: adi,ad7606: add missing datasheet link
Guillaume Stols [Fri, 28 Jun 2024 14:48:19 +0000 (14:48 +0000)]
dt-bindings: iio: adc: adi,ad7606: add missing datasheet link

Add AD7606-5 datasheet link.

Signed-off-by: Guillaume Stols <gstols@baylibre.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20240628-cleanup-ad7606-v2-1-96e02f90256d@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
11 months agoMerge tag 'riscv-for-linus-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 28 Jun 2024 23:14:59 +0000 (16:14 -0700)]
Merge tag 'riscv-for-linus-6.10-rc6' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - A fix for vector load/store instruction decoding, which could result
   in reserved vector element length encodings decoding as valid vector
   instructions.

 - Instruction patching now aggressively flushes the local instruction
   cache, to avoid situations where patching functions on the flush path
   results in torn instructions being fetched.

 - A fix to prevent the stack walker from showing up as part of traces.

* tag 'riscv-for-linus-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: stacktrace: convert arch_stack_walk() to noinstr
  riscv: patch: Flush the icache right after patching to avoid illegal insns
  RISC-V: fix vector insn load/store width mask

11 months agoMerge tag 'hardening-v6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 28 Jun 2024 23:11:02 +0000 (16:11 -0700)]
Merge tag 'hardening-v6.10-rc6' of git://git./linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - Remove invalid tty __counted_by annotation (Nathan Chancellor)

 - Add missing MODULE_DESCRIPTION()s for KUnit string tests (Jeff
   Johnson)

 - Remove non-functional per-arch kstack entropy filtering

* tag 'hardening-v6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  tty: mxser: Remove __counted_by from mxser_board.ports[]
  randomize_kstack: Remove non-functional per-arch entropy filtering
  string: kunit: add missing MODULE_DESCRIPTION() macros

11 months agox86: stop playing stack games in profile_pc()
Linus Torvalds [Fri, 28 Jun 2024 21:27:22 +0000 (14:27 -0700)]
x86: stop playing stack games in profile_pc()

The 'profile_pc()' function is used for timer-based profiling, which
isn't really all that relevant any more to begin with, but it also ends
up making assumptions based on the stack layout that aren't necessarily
valid.

Basically, the code tries to account the time spent in spinlocks to the
caller rather than the spinlock, and while I support that as a concept,
it's not worth the code complexity or the KASAN warnings when no serious
profiling is done using timers anyway these days.

And the code really does depend on stack layout that is only true in the
simplest of cases.  We've lost the comment at some point (I think when
the 32-bit and 64-bit code was unified), but it used to say:

Assume the lock function has either no stack frame or a copy
of eflags from PUSHF.

which explains why it just blindly loads a word or two straight off the
stack pointer and then takes a minimal look at the values to just check
if they might be eflags or the return pc:

Eflags always has bits 22 and up cleared unlike kernel addresses

but that basic stack layout assumption assumes that there isn't any lock
debugging etc going on that would complicate the code and cause a stack
frame.

It causes KASAN unhappiness reported for years by syzkaller [1] and
others [2].

With no real practical reason for this any more, just remove the code.

Just for historical interest, here's some background commits relating to
this code from 2006:

  0cb91a229364 ("i386: Account spinlocks to the caller during profiling for !FP kernels")
  31679f38d886 ("Simplify profile_pc on x86-64")

and a code unification from 2009:

  ef4512882dbe ("x86: time_32/64.c unify profile_pc")

but the basics of this thing actually goes back to before the git tree.

Link: https://syzkaller.appspot.com/bug?extid=84fe685c02cd112a2ac3
Link: https://lore.kernel.org/all/CAK55_s7Xyq=nh97=K=G1sxueOFrJDAvPOJAL4TPTCAYvmxO9_A@mail.gmail.com/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>