platform/kernel/linux-starfive.git
3 years agodocs: counter: Fix spelling
William Breathitt Gray [Wed, 9 Jun 2021 01:31:05 +0000 (10:31 +0900)]
docs: counter: Fix spelling

"Miscellaneous" is the correct spelling.

Reviewed-by: David Lechner <david@lechnology.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/880c2fd0e2e91b8962c9d388b37ba582d548db8e.1623201081.git.vilhelm.gray@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agodocs: counter: Consolidate Counter sysfs attributes documentation
William Breathitt Gray [Wed, 9 Jun 2021 01:31:04 +0000 (10:31 +0900)]
docs: counter: Consolidate Counter sysfs attributes documentation

Duplicate ABIs are not valid, so let's consolidate these sysfs
attributes into the main sysfs-bus-counter documentation file.

Cc: Patrick Havelange <patrick.havelange@essensium.com>
Reviewed-by: David Lechner <david@lechnology.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/c651ec1c541754ad108160839e2b8425ad089819.1623201081.git.vilhelm.gray@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoMerge tag 'iio-for-5.14a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23...
Greg Kroah-Hartman [Wed, 9 Jun 2021 10:11:49 +0000 (12:11 +0200)]
Merge tag 'iio-for-5.14a' of https://git./linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

1st set of new IIO/counter device support, features and cleanup for 5.14

There are a couple of large cleanup sets in here alongside a number of new
drivers.

Note an immutable branch merged to add a stub for i2c_verify_client()
as needed to avoid a build issue in the fxls8962af driver as a result of a
workaround for a device errata that only applies when i2c interface is used.

Counters
========

New device support
* intel,quadrature encoder peripheral found on Elkhart Lake platforms.
  - New driver.

IIO
===

New device support
* amstaos,tsl2591 ambient light sensor.
  - New driver + bindings
  - Follow up fix to ensure some local variables are suitable for error
    handling.
* fsl,fxls8962af + fsl,fxls8964af accelerometers
  - New driver + bindings
  - Includes an errata work around that cause a build bot failure fixed
    by adding a stub to i2c.
* kionix,kxcjk-1013
  - Add support for KX023-1025 device.  Mostly a different register map
    that needed to be supported.
* murata,sca3300 accelerometer
  - New driver + bindings
* st,lsm9ds0 IMU
  - Rework of st,sensors driver to cleanly support this new glue driver
    that enables the two parts of the LSM9DS0.
* ti,tsc2046 touchscreen controller ADC.
  - New driver. Intent here is to use this with existing IIO consumer
    drivers such as resistive-adc-touch.
  - Follow up fix to avoid an issue with unsigned subtraction in error
    check.
* ti,tmp117 digital temperature sensor
  - New driver + bindings

Features
* adi,ad5755
  - Add missing dt-binding doc
* adi,ad7298
  - Add ACPI ID used on Intel Galileo Gen 1 boards.
  - Add missing dt-binding doc
* adi,ad7476
  - Add missing dt-binding doc
* adi,ad7746
  - Add missing dt-binding doc for this driver that will hopefully move out
    of staging shortly. Update staging driver to use the binding instead of
    platform data.
* adi,adis16201 + adis16209
  - Add missing dt-binding doc
* adi,adis16480
  - Support burst mode for adis16495 and adis16497 parts.
* bosch,bma220
  - Add missing dt-binding doc
* fsl,mma7455
  - Add missing dt-binding doc
* iio-rescale
  - Support handling of processed channels from provider.  Some ADCs
    require (typically non linear) calibration functions to be applied,
    and so provide only IIO_CHAN_INFO_PROCESSED read back. They can be
    used as providers to the iio-rescale driver which needs to handle them
    somewhat differently from IIO_CHAN_INFO_RAW
* sensiron,sps30
  - Support the serial interface.  Note this required significant
    refactoring of existing driver.
* st,st-sensors
  - Add mount matrix support for normal dt-binding whilst continuing to
    support the odd ACPI approach for accelerometers.
* ti,dac082s085 + similar
  - Add missing dt-binding doc
* trivial-devices - add entries for
  - memsic,mx4005, memsic,mx6255 and memsic,mxc6655
  - sensortek,stk8312 and sensortek,stk8ba50

Cleanup / minor fixes
* core
  - Use devm_add_action_or_reset() to replace boilerplate in several
    driver and core IIO devm_* functions.
  - Fix an error path issue introduced by above, that could return an
    error pointer rather than the expected null from dev_iio_device_alloc()
  - Move more IIO internals related fields from struct iio_dev to
    struct iio_dev_opaque.
  - Drop unused final update of in_loc in demux setup.
* Docs
  - Move some docs from driver specific to core dos to avoid replication
    of names which the documentation builder does not allow.
    Note this means adding a few device specific notes to the general docs
    to cover the more unusual uses of the ABI.
  - ABI: Move old buffer/* and scan_elements/* docs to obsolete as now we
    have the bufferX/* variant.  Not we are not getting rid of these
    interfaces, just encouraging new code to use the new interface.
* IIO wide:
  - Tidy up new cases of dev.parent etc being set in drivers as the core
    now does it.
  - Fix more cases of possible miss-aligned buffers when passed to
    iio_push_to_buffers_with_timestamp().  Note we only have one known
    instance of anyone seeing this bug actually happening, so this has been
    a low priority cleanup effort for several cycles.
  - sysfs_emit() used in more drivers.
  - Runtime pm tidy up and use of pm_runtime_resume_and_get()
  - Buffer alignment fixes as iio_push_to_buffers_with_timestamp requires
    that the timestamp when inserted by naturally aligned + consumers can
    assume that all fields are naturally aligned. Part of a long running
    effort, with at least 2 more series to come tackling additional
    variants.
  - Stop specifying "mount-matrix" property name in every lookup of the
    mount matrix from firmware by hard coding it in the core.
* adi,ad7476
  - Handle the variety of different regulators used by the parts supported
    by this driver (came up in dt-binding review)
* adi,ad7746
  - Trivial drop of if (ret) return ret; return 0; pattern
  - Tidy up comments
  - Pull capdac setup out to own function.
* adi,ad7766
  - Trivial drop of if (ret) return ret; return 0; pattern
* adi,adis
  - Avoid returning error codes in interrupt handlers.
  - Handle a failure in spi_write in the trigger handler.
  - Rework to add updating of device page after changing it.
  - Don't push data to IIO buffers when read failed.
  - Add configuration of burst max speed to core avoid handling this in
    each driver.
  - Use the adis_dev_lock() helper in adis16260 and adis16136 drivers.
  - Excessive includes cleanup via include-what-you-use static checker
    after zero day highlighted that these needed updating.
* afe
  - Amend binding to add #io-channel-cells, thus allowing this IIO
    consumer to also be an IIO provider.
* aosong,am2315
  - Drop ACPI id. Unlikely this one is in the wild and it isn't valid
    ACPI naming.
* bosch,bma180
  - Adding missing bandwidth settings (500, 1000 Hz)
* bosch,bme680
  - Drop ACPI id. Unlikely this one is in the wild and it isn't valid
    ACPI naming.
* ep93xx_adc,
  - Drop a redundant error print.
* maxim,max118
  - Convert remainder of probe() to devm_ managed functions.
  - Avoid some repeated jumping back and forth between iio_dev and
    spi structures.
* maxim,max11100
  - Use get_unaligned_be16() instead of open coding.
  - Convert remainder of probe() to devm_ managed functions.
* samsung,exynos_adc
  - Unused error value dropped.
* sensiron,sgp30
  - Drop use of %hx in favor of %x and letting the normal type conversion
    work.
* sensortek,stk8312
  - Add lowercase device id and note uppercase version deprecated.
  - Drop ACPI id. Unlikely this one is in the wild and it isn't valid
    ACPI naming.
* sprx,sc72xx_adc
  - add MODULE_DEVICE_TABLE
* st,lsm6dsx
  - Fix docs of valid ODRs
* st,sensors
  - dt-binding rework.  Two efforts on this crossed in a previous cycle
    so this update cherry picks the best of the two yaml conversions.
  - Don't copy the channel spec array as now ext_info is no longer modified.
* st,stm32-adc
  - tidy up some docs that were marked as kernel-doc but aren't.
* ti,adc081c, ti,adc0832, ti,adc108s102 and ti,adc161s626
  - Convert remainder of probe() functions to devm_ managed functions
    to simplify error handing and remove paths.

* tag 'iio-for-5.14a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (171 commits)
  i2c: core: Add stub for i2c_verify_client() if !CONFIG_I2C
  iio: adis: Cleanout unused headers
  iio: accel: bma180: Add missing 500 Hz / 1000 Hz bandwidth
  counter: Add support for Intel Quadrature Encoder Peripheral
  staging: iio: cdc: ad7746: extract capac setup to own function
  staging: iio: cdc: ad7746: clean up probe return
  staging: iio: cdc: ad7746: remove ordinary comments
  iio: adc: ti-adc161s626: Use devm managed functions for all of probe.
  iio: adc: ti-adc108s102: Use devm managed functions for all of probe()
  iio: adc: ti-adc0832: Use devm managed functions for all of probe()
  iio: adc: ti-adc081c: Use devm managed functions for all of probe()
  iio: adc: max1118: Avoid jumping back and forth between spi and iio structures
  iio: adc: max1118: Use devm_ managed functions for all of probe
  iio: adc: max11100: Use devm_ functions for rest of probe()
  iio: adc: max11100: Use get_unaligned_be16() rather than opencoding.
  iio: chemical: sgp30: Drop use of %hx in format string.
  iio: gyro: st_gyro: Support mount matrix
  iio: magnetometer: st_magn: Support mount matrix
  iio: accel: st_sensors: Stop copying channels
  iio: accel: st_sensors: Support generic mounting matrix
  ...

3 years agostaging: rtl8712: Remove unnecessary alias of printk()
Fabio M. De Francesco [Sun, 6 Jun 2021 03:40:38 +0000 (05:40 +0200)]
staging: rtl8712: Remove unnecessary alias of printk()

This module defines four alias for printk(). Removed them
all, because they are not used anywhere else in the driver.
Converted the only exception to the explicit use of printk().

Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210606034038.9657-1-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoMerge branch 'ib-iio-i2c-5.13rc1' into togreg
Jonathan Cameron [Mon, 7 Jun 2021 08:20:02 +0000 (09:20 +0100)]
Merge branch 'ib-iio-i2c-5.13rc1' into togreg
Adds a stub needed to resolve a build conflict for the
fxls8962af driver.

3 years agoi2c: core: Add stub for i2c_verify_client() if !CONFIG_I2C
Jonathan Cameron [Thu, 3 Jun 2021 16:58:35 +0000 (17:58 +0100)]
i2c: core: Add stub for i2c_verify_client() if !CONFIG_I2C

If I2C is not compiled, there is no way we should see a call to
i2c_verify_client() on a device that is an i2c client. As such,
provide a stub to return NULL to resolve an associated build failure.

The build is failing with this link error
ld: fxls8962af-core.o: in function `fxls8962af_fifo_transfer':
fxls8962af-core.c: undefined reference to `i2c_verify_client'

Reported-by: Tom Rix <trix@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Fixes: af959b7b96b8 ("iio: accel: fxls8962af: fix errata bug E3 - I2C burst reads")
Reviewed-by: Sean Nyekjaer <sean@geanix.com>
Acked-by: Wolfram Sang <wsa@kernel.org>
Link: https://lore.kernel.org/r/20210603165835.3594557-1-jic23@kernel.org
3 years agostaging: vchiq_core: introduce handle_poll
Stefan Wahren [Thu, 3 Jun 2021 15:50:05 +0000 (17:50 +0200)]
staging: vchiq_core: introduce handle_poll

The function slot_handler_func() has very deep indentations. Moving the
poll handling into separate function could improve the readability.
Use the return value to keep the poll_needed handling at the same place.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-17-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_connected: move EXPORT_SYMBOL below the right function
Stefan Wahren [Thu, 3 Jun 2021 15:50:04 +0000 (17:50 +0200)]
staging: vchiq_connected: move EXPORT_SYMBOL below the right function

It's more intuitive to have the EXPORT_SYMBOL() call below the matching
definition.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-16-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: store message id in local variable
Stefan Wahren [Thu, 3 Jun 2021 15:50:03 +0000 (17:50 +0200)]
staging: vchiq_core: store message id in local variable

Some queue_message() calls are still rather complex to read. So store
the message ids in a local variable in those cases.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-15-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: reduce indentation in parse_open
Stefan Wahren [Thu, 3 Jun 2021 15:50:02 +0000 (17:50 +0200)]
staging: vchiq_core: reduce indentation in parse_open

The function parse_open() already has bail out sections like fail_open.
So use a goto for the other error cases like payload size is too small
and listening service cannot be found. This avoids two indentation levels.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-14-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: introduce process_free_data_message
Stefan Wahren [Thu, 3 Jun 2021 15:50:01 +0000 (17:50 +0200)]
staging: vchiq_core: introduce process_free_data_message

This moves the special handling for data messages from process_free_queue()
into a new function. After this process_free_queue() has less extreme
indentation and should be easier to read.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-13-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_arm: tidy up service function naming
Stefan Wahren [Thu, 3 Jun 2021 15:50:00 +0000 (17:50 +0200)]
staging: vchiq_arm: tidy up service function naming

During a recent review Dan Carpenter reported that the function naming of
(un)lock_service is misleading. They are like wrapper around kref_get /
kref_put and don't have anything to do with locking. So use a name which
represent more the actual behavior. Btw add the vchiq prefix to avoid
possible name conflicts.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-12-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: simplify WARN_ON conditions
Stefan Wahren [Thu, 3 Jun 2021 15:49:59 +0000 (17:49 +0200)]
staging: vchiq_core: simplify WARN_ON conditions

During a recent review Dan Carpenter noticed a double negation in a WARN_ON.
But a quick search revealed more unnecessary complex WARN_ON conditions.
This change should simplify them.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-11-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: introduce message specific make macros
Stefan Wahren [Thu, 3 Jun 2021 15:49:58 +0000 (17:49 +0200)]
staging: vchiq_core: introduce message specific make macros

VCHIQ_MAKE_MSG isn't optimal because a lot of message types doesn't need
a parameter. So better define a macro for every message type which is used.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-10-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: use define for message type shift
Stefan Wahren [Thu, 3 Jun 2021 15:49:57 +0000 (17:49 +0200)]
staging: vchiq_core: use define for message type shift

Make it clear and use a define for shifting the message type.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-9-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: avoid precedence issues
Stefan Wahren [Thu, 3 Jun 2021 15:49:56 +0000 (17:49 +0200)]
staging: vchiq_core: avoid precedence issues

Add () around macro argument to avoid precedence issues

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-8-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: put spaces around operators
Stefan Wahren [Thu, 3 Jun 2021 15:49:55 +0000 (17:49 +0200)]
staging: vchiq_core: put spaces around operators

This fixes the checkpatch issues regarding missing spaces around operators.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-7-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: get the rid of vchiq_static_assert
Stefan Wahren [Thu, 3 Jun 2021 15:49:54 +0000 (17:49 +0200)]
staging: vchiq_core: get the rid of vchiq_static_assert

Use static_assert from the kernel instead of opencode it.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-6-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: get the rid of IS_POW2
Stefan Wahren [Thu, 3 Jun 2021 15:49:53 +0000 (17:49 +0200)]
staging: vchiq_core: get the rid of IS_POW2

The macro IS_POW2 is only used to ensure some size are powers of 2.
Better use BUILD_BUG_ON_NOT_POWER_OF_2 for this. Since this must be done
in a function, merge all these checks in a new function.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-5-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: move internals to C source
Stefan Wahren [Thu, 3 Jun 2021 15:49:52 +0000 (17:49 +0200)]
staging: vchiq_core: move internals to C source

There is no need to export those definitions, so keep them in the
source file.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-4-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_arm: introduce free_bulk_waiter
Stefan Wahren [Thu, 3 Jun 2021 15:49:51 +0000 (17:49 +0200)]
staging: vchiq_arm: introduce free_bulk_waiter

Avoid the copy & paste of freeing the bulk waiter and move it into a
separate function. Found by CPD.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-3-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: vchiq_core: fix logic in poll_services_of_group
Stefan Wahren [Thu, 3 Jun 2021 15:49:50 +0000 (17:49 +0200)]
staging: vchiq_core: fix logic in poll_services_of_group

Commit "staging: vchiq_core: avoid indention in poll_services_of_group"
tries to reduce the indention, but the parts regarding the third if statement
breaks the logic. So restore them and prevent vchiq_test from hanging during
the ping test.

Fixes: 2f440843a7d4 ("staging: vchiq_core: avoid indention in poll_services_of_group")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622735405-9980-2-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: mt7621-dts: review pcie overlay in 'gbpc1' dts file
Sergio Paracuellos [Fri, 4 Jun 2021 06:30:31 +0000 (08:30 +0200)]
staging: mt7621-dts: review pcie overlay in 'gbpc1' dts file

pcie node is being overlayed in 'gbpc1.dts' file requesting three
gpio reset pins for each pcie port. Gnubee only needs general
gpio 19 to properly reset and make all of them work. This pin
is already requested in the general 'mt7621.dtsi' file as well
as is the pinctrl pins. So we only need to enable the node
in the overlay and all the other stuff can be safely deleted.
Also, pin 8 is being requested for gpio-leds node and there
was an error on boot before this changes because of pin was
already assigned (EBUSY):

leds-gpio: probe of gpio-leds failed with error -16

With this changes this error has disappear and the board is
properly booting without any other regression.

Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20210604063031.13599-1-sergio.paracuellos@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoiio: adis: Cleanout unused headers
Jonathan Cameron [Thu, 3 Jun 2021 19:36:16 +0000 (20:36 +0100)]
iio: adis: Cleanout unused headers

0-day recently added the include-what-you-use header checker and
it gave a warning on an adis patch.  As such I decided to
run it on all the adis drivers and see if it made sensible suggestions.

Note this doesn't represent a complete list of what it suggested changing
as I filtered out a few on the basis they are standard headers used to
effectively include a bunch of other headers.

Could split this into a patch per driver if people prefer.

Note to anyone else trying this tool is that it is somewhat
of a loose cannon so you will be wanting to carefully check any
suggestions before proposing patches!

I thought about also reorganising the headers whilst here, but
that would make this patch harder to read, or lead to another rather
noisy patch across most of the files.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20210603193616.3708447-1-jic23@kernel.org
3 years agoiio: accel: bma180: Add missing 500 Hz / 1000 Hz bandwidth
Stephan Gerhold [Wed, 26 May 2021 09:44:08 +0000 (11:44 +0200)]
iio: accel: bma180: Add missing 500 Hz / 1000 Hz bandwidth

According to the BMA253 datasheet [1] and BMA250 datasheet [2] BMA25x
also supports a bandwidth of 500 Hz and 1000 Hz but this was not listed
in the driver for some reason.

Add it to the bw_table to make the driver match the datasheet.

[1]: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bma253-ds000.pdf
[2]: https://datasheet.octopart.com/BMA250-Bosch-datasheet-15540103.pdf

Cc: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210526094408.34298-3-stephan@gerhold.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agocounter: Add support for Intel Quadrature Encoder Peripheral
Jarkko Nikula [Wed, 2 Jun 2021 11:32:59 +0000 (14:32 +0300)]
counter: Add support for Intel Quadrature Encoder Peripheral

Add support for Intel Quadrature Encoder Peripheral found on Intel
Elkhart Lake platform.

Initial implementation was done by Felipe Balbi while he was working at
Intel with later changes from Raymond Tan and me.

Co-developed-by: Felipe Balbi (Intel) <balbi@kernel.org>
Signed-off-by: Felipe Balbi (Intel) <balbi@kernel.org>
Co-developed-by: Raymond Tan <raymond.tan@intel.com>
Signed-off-by: Raymond Tan <raymond.tan@intel.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/20210602113259.158674-1-jarkko.nikula@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agostaging: iio: cdc: ad7746: extract capac setup to own function
Lucas Stankus [Sun, 23 May 2021 17:12:37 +0000 (14:12 -0300)]
staging: iio: cdc: ad7746: extract capac setup to own function

Refactor the capdac register write logic to own function.

Also fixes the following checkpatch warning:
CHECK: Alignment should match open parenthesis

Signed-off-by: Lucas Stankus <lucas.p.stankus@gmail.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/b637a5ecde4e5f9f927a5b104332378d4721c91d.1621786036.git.lucas.p.stankus@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agostaging: iio: cdc: ad7746: clean up probe return
Lucas Stankus [Sun, 23 May 2021 17:12:16 +0000 (14:12 -0300)]
staging: iio: cdc: ad7746: clean up probe return

Slight simplication of the probe return on device register.

Signed-off-by: Lucas Stankus <lucas.p.stankus@gmail.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/45443b8306893576824effaff57d40231de8e813.1621786036.git.lucas.p.stankus@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agostaging: iio: cdc: ad7746: remove ordinary comments
Lucas Stankus [Sun, 23 May 2021 17:11:57 +0000 (14:11 -0300)]
staging: iio: cdc: ad7746: remove ordinary comments

Remove ordinary comments about typical driver structure.
Also align one comment with wrong indentation.

Signed-off-by: Lucas Stankus <lucas.p.stankus@gmail.com>
Link: https://lore.kernel.org/r/e93e5efb19cee53546a339c1caf1ab344e9ff282.1621786036.git.lucas.p.stankus@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: adc: ti-adc161s626: Use devm managed functions for all of probe.
Jonathan Cameron [Sun, 16 May 2021 17:25:20 +0000 (18:25 +0100)]
iio: adc: ti-adc161s626: Use devm managed functions for all of probe.

Simplifies error handling and allows us to drop remove entirely.

The regulator handling in this driver was unusual as it would try to
acquire the regulator, but if that failed with an error would continue.

We should get a stub regulator if one isn't provided in DT and an error
could indicate an actual problem preventing the device being powered
(perhaps a need to defer). So this handling is cleaned up (arguably
that might be a fix but given no one has run into it, I haven't broken
it out separately.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Matt Ranostay <matt.ranostay@konsulko.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Reviewed-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210516172520.1398835-9-jic23@kernel.org
3 years agoiio: adc: ti-adc108s102: Use devm managed functions for all of probe()
Jonathan Cameron [Sun, 16 May 2021 17:25:19 +0000 (18:25 +0100)]
iio: adc: ti-adc108s102: Use devm managed functions for all of probe()

Simplifies error handling and lets us drop remove() entirely.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Bogdan Pricop <bogdan.pricop@emutex.com>
Reviewed-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210516172520.1398835-8-jic23@kernel.org
3 years agoiio: adc: ti-adc0832: Use devm managed functions for all of probe()
Jonathan Cameron [Sun, 16 May 2021 17:25:18 +0000 (18:25 +0100)]
iio: adc: ti-adc0832: Use devm managed functions for all of probe()

Simplifies error handling, plus allows us to drop the remove()
function entirely.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210516172520.1398835-7-jic23@kernel.org
3 years agoiio: adc: ti-adc081c: Use devm managed functions for all of probe()
Jonathan Cameron [Sun, 16 May 2021 17:25:17 +0000 (18:25 +0100)]
iio: adc: ti-adc081c: Use devm managed functions for all of probe()

Simplifies error handling and allows us to drop remove() entirely.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210516172520.1398835-6-jic23@kernel.org
3 years agoiio: adc: max1118: Avoid jumping back and forth between spi and iio structures
Jonathan Cameron [Sun, 16 May 2021 17:25:16 +0000 (18:25 +0100)]
iio: adc: max1118: Avoid jumping back and forth between spi and iio structures

Changing from passing the spi structure into various functions to
passing struct iio_dev avoids use of spi_get_drvdata and lets us
stop setting that at all.  Previous code was unnecessarily complex.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210516172520.1398835-5-jic23@kernel.org
3 years agoiio: adc: max1118: Use devm_ managed functions for all of probe
Jonathan Cameron [Sun, 16 May 2021 17:25:15 +0000 (18:25 +0100)]
iio: adc: max1118: Use devm_ managed functions for all of probe

This simplifies error handling and allows us to drop the remove
function entirely.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210516172520.1398835-4-jic23@kernel.org
3 years agoiio: adc: max11100: Use devm_ functions for rest of probe()
Jonathan Cameron [Sun, 16 May 2021 17:25:14 +0000 (18:25 +0100)]
iio: adc: max11100: Use devm_ functions for rest of probe()

By using devm_add_action_or_reset() to manage the regulator disable,
it becomes simple to use managed functions for all of remove.
This simplifies error handling and allows us to drop the remove()
function entirely.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210516172520.1398835-3-jic23@kernel.org
3 years agoiio: adc: max11100: Use get_unaligned_be16() rather than opencoding.
Jonathan Cameron [Sun, 16 May 2021 17:25:13 +0000 (18:25 +0100)]
iio: adc: max11100: Use get_unaligned_be16() rather than opencoding.

The function is more explicit in showing the intent + quicker on some
platforms.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210516172520.1398835-2-jic23@kernel.org
3 years agoiio: chemical: sgp30: Drop use of %hx in format string.
Jonathan Cameron [Mon, 17 May 2021 12:55:54 +0000 (13:55 +0100)]
iio: chemical: sgp30: Drop use of %hx in format string.

Since:
commit cbacb5ab0aa0 ("docs: printk-formats: Stop encouraging use of
unnecessary %h[xudi] and %hh[xudi]")
use of these format strings has been discouraged.

As there are only a few such uses in IIO, lets clear them all out and
avoid chance of them getting copied into new drivers.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Andreas Brauchli <andreas.brauchli@sensirion.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20210517125554.1463156-5-jic23@kernel.org
3 years agoiio: gyro: st_gyro: Support mount matrix
Linus Walleij [Tue, 18 May 2021 23:07:22 +0000 (01:07 +0200)]
iio: gyro: st_gyro: Support mount matrix

Add support to read and present the mounting matrix on ST gyroscopes.

Cc: Denis Ciocca <denis.ciocca@st.com>
Cc: Daniel Drake <drake@endlessm.com>
Cc: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210518230722.522446-5-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: magnetometer: st_magn: Support mount matrix
Linus Walleij [Tue, 18 May 2021 23:07:21 +0000 (01:07 +0200)]
iio: magnetometer: st_magn: Support mount matrix

Add support to read and present the mounting matrix on ST magnetometers.

Cc: Denis Ciocca <denis.ciocca@st.com>
Cc: Daniel Drake <drake@endlessm.com>
Cc: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210518230722.522446-4-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: accel: st_sensors: Stop copying channels
Linus Walleij [Tue, 18 May 2021 23:07:20 +0000 (01:07 +0200)]
iio: accel: st_sensors: Stop copying channels

The channels were copied only so that the .ext_info member should become
assignable. We now have compile-time static assignment so drop this code.

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Cc: Daniel Drake <drake@endlessm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210518230722.522446-3-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: accel: st_sensors: Support generic mounting matrix
Linus Walleij [Tue, 18 May 2021 23:07:19 +0000 (01:07 +0200)]
iio: accel: st_sensors: Support generic mounting matrix

The ST accelerators support a special type of quirky mounting matrix found
in ACPI systems, but not a generic mounting matrix such as from the device
tree.

Augment the ACPI hack to be a bit more generic and accept a mounting
matrix from device properties.

This makes it possible to fix orientation on the Ux500 HREF device.

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Cc: Daniel Drake <drake@endlessm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210518230722.522446-2-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: st_sensors: Create extended attr macro
Linus Walleij [Tue, 18 May 2021 23:07:18 +0000 (01:07 +0200)]
iio: st_sensors: Create extended attr macro

Extend ST_SENSORS_LSM_CHANNELS() to a version that will accept extended
attributes named ST_SENSORS_LSM_CHANNELS_EXT() and wrap the former as a
specialized version of the former.

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Cc: Daniel Drake <drake@endlessm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210518230722.522446-1-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: adis16136: make use of adis lock helpers
Nuno Sá [Thu, 20 May 2021 11:59:09 +0000 (13:59 +0200)]
iio: adis16136: make use of adis lock helpers

Use the adis lib lock helpers to lock the device. This makes things
consistent with other users of the library.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210520115909.466275-3-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: adis16260: make use of adis lock helpers
Nuno Sá [Thu, 20 May 2021 11:59:08 +0000 (13:59 +0200)]
iio: adis16260: make use of adis lock helpers

Use the adis lib lock helpers to lock the device. This makes things
consistent with other users of the library.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210520115909.466275-2-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agostaging: iio: cdc: ad7746: use dt for capacitive channel setup.
Lucas Stankus [Sat, 1 May 2021 12:32:53 +0000 (09:32 -0300)]
staging: iio: cdc: ad7746: use dt for capacitive channel setup.

Ditch platform_data fields in favor of device tree properties for
configuring EXCA and EXCB output pins and setting the capacitive channel
excitation level.

As this covers all current use cases for the platform_data struct, remove
ad7746.h header file since it's no longer needed.

Signed-off-by: Lucas Stankus <lucas.p.stankus@gmail.com>
Link: https://lore.kernel.org/r/3e7f2a0a8960cece185f518ff2b7ceb87891edcd.1619841953.git.lucas.p.stankus@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agodt-bindings: staging: iio: cdc: ad7746: add binding documentation for AD7746
Lucas Stankus [Sat, 1 May 2021 12:32:31 +0000 (09:32 -0300)]
dt-bindings: staging: iio: cdc: ad7746: add binding documentation for AD7746

Add device tree binding documentation for AD7746 cdc in YAML format.

Signed-off-by: Lucas Stankus <lucas.p.stankus@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/2c2f4d486a94e0740e112bfac0d9306bdb7ea69c.1619841953.git.lucas.p.stankus@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: afe: iio-rescale: Support processed channels
Linus Walleij [Tue, 18 May 2021 09:27:41 +0000 (11:27 +0200)]
iio: afe: iio-rescale: Support processed channels

It happens that an ADC will only provide raw or processed
voltage conversion channels. (adc/ab8500-gpadc.c).
On the Samsung GT-I9070 this is used for a light sensor
and current sense amplifier so we need to think of something.

The idea is to allow processed channels and scale them
with 1/1 and then the rescaler can modify the result
on top.

Link: https://lore.kernel.org/linux-iio/20201101232211.1194304-1-linus.walleij@linaro.org/
Cc: Peter Rosin <peda@axentia.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Peter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/20210518092741.403080-1-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agostaging: iio: cdc: ad7746: Remove unnecessary assignment in ad7746_probe()
Tang Bin [Tue, 18 May 2021 09:56:47 +0000 (17:56 +0800)]
staging: iio: cdc: ad7746: Remove unnecessary assignment in ad7746_probe()

In the function ad7746_probe(), the initialized value of 'ret' is unused,
because it will be assigned by the function i2c_smbus_write_byte_data(),
thus remove it.

Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20210518095647.3008-1-tangbin@cmss.chinamobile.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: Drop Duplicated "mount-matrix" parameter
Andy Shevchenko [Tue, 18 May 2021 11:25:46 +0000 (14:25 +0300)]
iio: Drop Duplicated "mount-matrix" parameter

All of the users of iio_read_mount_matrix() are using the very same
property name. Moreover, the property name is hard coded in the API
documentation.

Make this clear and avoid duplication now and in the future.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Sean Nyekjaer <sean@geanix.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210518112546.44592-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: adis16480: support burst read function
Nuno Sa [Thu, 22 Apr 2021 10:37:35 +0000 (12:37 +0200)]
iio: adis16480: support burst read function

Some supported devices support burst read function. This provides a method
for reading a batch of data (status, temperature, gyroscopes,
accelerometers, time stamp/data counter, and CRC code), which does not
require a stall time between each 16-bit segment and only requires one
command on the DIN line to initiate. Devices supporting this mode
are:

 * adis16495-1
 * adis16495-2
 * adis16495-3
 * adis16497-1
 * adis16497-2
 * adis16497-3

Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210422103735.136367-1-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: buffer: Remove redundant assignment to in_loc
Jiapeng Chong [Mon, 17 May 2021 10:11:57 +0000 (18:11 +0800)]
iio: buffer: Remove redundant assignment to in_loc

Variable in_loc is being assigned a value from a calculation
however the assignment is never read, so this redundant assignment
can be removed.

Clean up the following clang-analyzer warning:

drivers/iio/industrialio-buffer.c:929:3: warning: Value stored to
'in_loc' is never read [clang-analyzer-deadcode.DeadStores].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/1621246317-62725-1-git-send-email-jiapeng.chong@linux.alibaba.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agoiio: hid: trigger: Balance runtime pm + use pm_runtime_resume_and_get()
Jonathan Cameron [Sun, 9 May 2021 11:33:34 +0000 (12:33 +0100)]
iio: hid: trigger: Balance runtime pm + use pm_runtime_resume_and_get()

The call to pm_runtime_put_noidle() in remove() callback is not
balanced by any gets

Note this doesn't cause any problems beyond reader confusion as the runtime
pm core protects against the reference counter going negative.

Whilst here, use pm_runtiem_resume_and_get() to simplify code a little.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/20210509113354.660190-9-jic23@kernel.org
3 years agoiio: adc: tsc2046: fix a warning message in tsc2046_adc_update_scan_mode()
Dan Carpenter [Sat, 15 May 2021 09:51:52 +0000 (12:51 +0300)]
iio: adc: tsc2046: fix a warning message in tsc2046_adc_update_scan_mode()

These variables are unsigned so the condition can't be less than zero
and the warning message will never be printed.

Fixes: 9374e8f5a38d ("iio: adc: add ADC driver for the TI TSC2046 controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YJ+ZuO43TnguY5vq@mwanda
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
3 years agostaging: rtl8192u: fix spaces in r8192U_hw.h
Manikishan Ghantasala [Wed, 2 Jun 2021 19:33:32 +0000 (01:03 +0530)]
staging: rtl8192u: fix spaces in r8192U_hw.h

Fixed "please, no space before tabs" checkpatch warning.

Signed-off-by: Manikishan Ghantasala <manikishanghantasala@gmail.com>
Link: https://lore.kernel.org/r/20210602193334.11687-4-manikishanghantasala@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: rtl8192u: put parentheses on macros with complex values in r8192U_hw.h
Manikishan Ghantasala [Wed, 2 Jun 2021 19:33:31 +0000 (01:03 +0530)]
staging: rtl8192u: put parentheses on macros with complex values in r8192U_hw.h

Fix "Macros with complex values should be enclosed in parentheses" checkpatch error.

Signed-off-by: Manikishan Ghantasala <manikishanghantasala@gmail.com>
Link: https://lore.kernel.org/r/20210602193334.11687-3-manikishanghantasala@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: rtl8192u: r8192U_hw.h: fix spaces preferred around that '|' code style error
Manikishan Ghantasala [Wed, 2 Jun 2021 19:33:30 +0000 (01:03 +0530)]
staging: rtl8192u: r8192U_hw.h: fix spaces preferred around that '|' code style error

Fix "spaces preferred around that '|' " checkpatch CHECK.

Signed-off-by: Manikishan Ghantasala <manikishanghantasala@gmail.com>
Link: https://lore.kernel.org/r/20210602193334.11687-2-manikishanghantasala@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: rtl8188eu: Fix fall-through warnings for Clang
Gustavo A. R. Silva [Fri, 28 May 2021 20:06:50 +0000 (15:06 -0500)]
staging: rtl8188eu: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding multiple break statements instead
of just letting the code fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20210528200650.GA39289@embeddedor
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: rtl8188eu: remove dummy setfreq handler
Martin Kaiser [Sat, 29 May 2021 12:13:46 +0000 (14:13 +0200)]
staging: rtl8188eu: remove dummy setfreq handler

The setfreq handler contains only a debug print. It returns success
although the frequency wasn't set.

Remove this handler and inform callers that this driver does not
support setfreq.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210529121346.8422-3-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: rtl8188eu: remove dummy wext handlers
Martin Kaiser [Sat, 29 May 2021 12:13:45 +0000 (14:13 +0200)]
staging: rtl8188eu: remove dummy wext handlers

Remove the wext handlers that link to an empty dummy function.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210529121346.8422-2-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: rtl8188eu: use IW_HANDLER to declare wext handlers
Martin Kaiser [Sat, 29 May 2021 12:13:44 +0000 (14:13 +0200)]
staging: rtl8188eu: use IW_HANDLER to declare wext handlers

Use the IW_HANDLER macro to declare the handler functions for
wext ioctls.  We don't have to skip unused ioctl numbers manually.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210529121346.8422-1-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoStaging: rtl8712: Cleanup coding style warning
Khoa Tran Minh [Tue, 1 Jun 2021 17:59:25 +0000 (17:59 +0000)]
Staging: rtl8712: Cleanup coding style warning

This patch fixes checkpatch warning about multiple line dereference.

Signed-off-by: Khoa Tran Minh <ktm8@posteo.de>
Link: https://lore.kernel.org/r/YLZ1fc7BsaTo+ixQ@rue.localhost
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: rtl8723bs: core: rtw_mlme_ext.c: remove deadcode
Yu Kuai [Mon, 31 May 2021 14:02:34 +0000 (22:02 +0800)]
staging: rtl8723bs: core: rtw_mlme_ext.c: remove deadcode

'CHECK_EVENT_SEQ' is not defined anywhere, remove the deadcode.

Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20210531140234.3352465-1-yukuai3@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: rtl8192u: remove the repeated declaration
Shaokun Zhang [Mon, 31 May 2021 07:37:58 +0000 (15:37 +0800)]
staging: rtl8192u: remove the repeated declaration

Functions 'ieee80211_stop_send_beacons' and 'notify_wx_assoc_event'
are declared twice in their header file, so remove the repeated
declaration.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/1622446678-52652-1-git-send-email-zhangshaokun@hisilicon.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agostaging: rtl8192u: Fix shadowed variable name
Thomas Bracht Laumann Jespersen [Thu, 27 May 2021 19:21:49 +0000 (21:21 +0200)]
staging: rtl8192u: Fix shadowed variable name

Fixes the following sparse warning:

drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c:798:32: warning: symbol 'tcb_desc' shadows an earlier one
drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c:550:24: originally declared here

Signed-off-by: Thomas Bracht Laumann Jespersen <t@laumann.xyz>
Link: https://lore.kernel.org/r/20210527192149.29686-1-t@laumann.xyz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoMerge 5.13-rc4 into staging-next
Greg Kroah-Hartman [Mon, 31 May 2021 07:42:06 +0000 (09:42 +0200)]
Merge 5.13-rc4 into staging-next

We need the staging/iio fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoLinux 5.13-rc4
Linus Torvalds [Sun, 30 May 2021 21:58:25 +0000 (11:58 -1000)]
Linux 5.13-rc4

3 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Sun, 30 May 2021 04:24:00 +0000 (18:24 -1000)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:
 "This is a bit larger than usual at rc4 time. The reason is due to
  Lee's work of fixing newly reported build warnings.

  The rest is fixes as usual"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (22 commits)
  MAINTAINERS: adjust to removing i2c designware platform data
  i2c: s3c2410: fix possible NULL pointer deref on read message after write
  i2c: mediatek: Disable i2c start_en and clear intr_stat brfore reset
  i2c: i801: Don't generate an interrupt on bus reset
  i2c: mpc: implement erratum A-004447 workaround
  powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
  powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
  dt-bindings: i2c: mpc: Add fsl,i2c-erratum-a004447 flag
  i2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name
  i2c: busses: i2c-st: Fix copy/paste function misnaming issues
  i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure
  i2c: busses: i2c-ocores: Place the expected function names into the documentation headers
  i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param
  i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'
  i2c: busses: i2c-cadence: Fix incorrectly documented 'enum cdns_i2c_slave_mode'
  i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc
  i2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headers
  i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'
  i2c: sh_mobile: Use new clock calculation formulas for RZ/G2E
  i2c: I2C_HISI should depend on ACPI
  ...

3 years agoMerge tag 'seccomp-fixes-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 30 May 2021 04:16:09 +0000 (18:16 -1000)]
Merge tag 'seccomp-fixes-v5.13-rc4' of git://git./linux/kernel/git/kees/linux

Pull seccomp fixes from Kees Cook:
 "This fixes a hard-to-hit race condition in the addfd user_notif
  feature of seccomp, visible since v5.9.

  And a small documentation fix"

* tag 'seccomp-fixes-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  seccomp: Refactor notification handler to prepare for new semantics
  Documentation: seccomp: Fix user notification documentation

3 years agoMerge tag 'riscv-for-linus-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 30 May 2021 04:10:10 +0000 (18:10 -1000)]
Merge tag 'riscv-for-linus-5.13-rc4' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:
 "A handful of RISC-V related fixes:

   - avoid errors when the stack tracing code is tracing itself.

   - resurrect the memtest= kernel command line argument on RISC-V,
     which was briefly enabled during the merge window before a
     refactoring disabled it.

   - build fix and some warning cleanups"

* tag 'riscv-for-linus-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: kexec: Fix W=1 build warnings
  riscv: kprobes: Fix build error when MMU=n
  riscv: Select ARCH_USE_MEMTEST
  riscv: stacktrace: fix the riscv stacktrace when CONFIG_FRAME_POINTER enabled

3 years agoMerge tag 'xfs-5.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Sun, 30 May 2021 03:47:19 +0000 (17:47 -1000)]
Merge tag 'xfs-5.13-fixes-3' of git://git./fs/xfs/xfs-linux

Pull xfs fixes from Darrick Wong:
 "This week's pile mitigates some decades-old problems in how extent
  size hints interact with realtime volumes, fixes some failures in
  online shrink, and fixes a problem where directory and symlink
  shrinking on extremely fragmented filesystems could fail.

  The most user-notable change here is to point users at our (new) IRC
  channel on OFTC. Freedom isn't free, it costs folks like you and me;
  and if you don't kowtow, they'll expel everyone and take over your
  channel. (Ok, ok, that didn't fit the song lyrics...)

  Summary:

   - Fix a bug where unmapping operations end earlier than expected,
     which can cause chaos on multi-block directory and symlink shrink
     operations.

   - Fix an erroneous assert that can trigger if we try to transition a
     bmap structure from btree format to extents format with zero
     extents. This was exposed by xfs/538"

* tag 'xfs-5.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: bunmapi has unnecessary AG lock ordering issues
  xfs: btree format inode forks can have zero extents
  xfs: add new IRC channel to MAINTAINERS
  xfs: validate extsz hints against rt extent size when rtinherit is set
  xfs: standardize extent size hint validation
  xfs: check free AG space when making per-AG reservations

3 years agoseccomp: Refactor notification handler to prepare for new semantics
Sargun Dhillon [Mon, 17 May 2021 19:39:06 +0000 (12:39 -0700)]
seccomp: Refactor notification handler to prepare for new semantics

This refactors the user notification code to have a do / while loop around
the completion condition. This has a small change in semantic, in that
previously we ignored addfd calls upon wakeup if the notification had been
responded to, but instead with the new change we check for an outstanding
addfd calls prior to returning to userspace.

Rodrigo Campos also identified a bug that can result in addfd causing
an early return, when the supervisor didn't actually handle the
syscall [1].

[1]: https://lore.kernel.org/lkml/20210413160151.3301-1-rodrigo@kinvolk.io/

Fixes: 7cf97b125455 ("seccomp: Introduce addfd ioctl to seccomp user notifier")
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Tycho Andersen <tycho@tycho.pizza>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Rodrigo Campos <rodrigo@kinvolk.io>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210517193908.3113-3-sargun@sargun.me
3 years agoMerge tag 'thermal-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/therma...
Linus Torvalds [Sat, 29 May 2021 16:55:55 +0000 (06:55 -1000)]
Merge tag 'thermal-v5.13-rc4' of git://git./linux/kernel/git/thermal/linux

Pull thermal fixes from Daniel Lezcano:

 - Fix uninitialized error code value for the SPMI adc driver (Yang
   Yingliang)

 - Fix kernel doc warning (Yang Li)

 - Fix wrong read-write thermal trip point initialization (Srinivas
   Pandruvada)

* tag 'thermal-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
  thermal/drivers/qcom: Fix error code in adc_tm5_get_dt_channel_data()
  thermal/ti-soc-thermal: Fix kernel-doc
  thermal/drivers/intel: Initialize RW trip to THERMAL_TEMP_INVALID

3 years agoMerge tag 'char-misc-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sat, 29 May 2021 16:41:50 +0000 (06:41 -1000)]
Merge tag 'char-misc-5.13-rc4' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are some tiny char/misc driver fixes for 5.13-rc4.

  Nothing huge here, just some tiny fixes for reported issues:

   - two interconnect driver fixes

   - kgdb build warning fix for gcc-11

   - hgafb regression fix

   - soundwire driver fix

   - mei driver fix

  All have been in linux-next with no reported issues"

* tag 'char-misc-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mei: request autosuspend after sending rx flow control
  kgdb: fix gcc-11 warnings harder
  video: hgafb: correctly handle card detect failure during probe
  soundwire: qcom: fix handling of qcom,ports-block-pack-mode
  interconnect: qcom: Add missing MODULE_DEVICE_TABLE
  interconnect: qcom: bcm-voter: add a missing of_node_put()

3 years agoMerge tag 'driver-core-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 29 May 2021 16:33:28 +0000 (06:33 -1000)]
Merge tag 'driver-core-5.13-rc4' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here are three small driver core / debugfs fixes for 5.13-rc4:

   - debugfs fix for incorrect "lockdown" mode for selinux accesses

   - two device link changes, one bugfix and one cleanup

  All of these have been in linux-next for over a week with no reported
  problems"

* tag 'driver-core-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  drivers: base: Reduce device link removal code duplication
  drivers: base: Fix device link removal
  debugfs: fix security_locked_down() call for SELinux

3 years agoMerge tag 'staging-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sat, 29 May 2021 16:29:13 +0000 (06:29 -1000)]
Merge tag 'staging-5.13-rc4' of git://git./linux/kernel/git/gregkh/staging

Pull staging and IIO driver fixes from Greg KH:
 "Here are some small IIO and staging driver fixes for reported issues
  for 5.13-rc4.

  Nothing major here, tiny changes for reported problems, full details
  are in the shortlog if people are curious.

  All have been in linux-next for a while with no reported problems"

* tag 'staging-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: adc: ad7793: Add missing error code in ad7793_setup()
  iio: adc: ad7923: Fix undersized rx buffer.
  iio: adc: ad7768-1: Fix too small buffer passed to iio_push_to_buffers_with_timestamp()
  iio: dac: ad5770r: Put fwnode in error case during ->probe()
  iio: gyro: fxas21002c: balance runtime power in error path
  staging: emxx_udc: fix loop in _nbu2ss_nuke()
  staging: iio: cdc: ad7746: avoid overwrite of num_channels
  iio: adc: ad7192: handle regulator voltage error first
  iio: adc: ad7192: Avoid disabling a clock that was never enabled.
  iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers
  iio: adc: ad7124: Fix missbalanced regulator enable / disable on error.

3 years agoMerge tag 'tty-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sat, 29 May 2021 16:25:16 +0000 (06:25 -1000)]
Merge tag 'tty-5.13-rc4' of git://git./linux/kernel/git/gregkh/tty

Pull tty / serial driver fixes from Greg KH:
 "Here are some small fixes for reported problems for tty and serial
  drivers for 5.13-rc4.

  They consist of:

   - 8250 bugfixes and new device support

   - lockdown security mode fixup

   - syzbot found problems fixed

   - 8250_omap fix for interrupt storm

   - revert of 8250_omap driver fix as it caused worse problem than the
     original issue

  All but the last patch have been in linux-next for a while, the last
  one is a revert of a problem found in linux-next with the 8250_omap
  driver change"

* tag 'tty-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Revert "serial: 8250: 8250_omap: Fix possible interrupt storm"
  serial: 8250_pci: handle FL_NOIRQ board flag
  serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
  serial: 8250_pci: Add support for new HPE serial device
  serial: 8250: 8250_omap: Fix possible interrupt storm
  serial: 8250: Use BIT(x) for UART_{CAP,BUG}_*
  serial: 8250: Add UART_BUG_TXRACE workaround for Aspeed VUART
  serial: 8250_dw: Add device HID for new AMD UART controller
  serial: sh-sci: Fix off-by-one error in FIFO threshold register setting
  serial: core: fix suspicious security_locked_down() call
  serial: tegra: Fix a mask operation that is always true

3 years agoMerge tag 'usb-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sat, 29 May 2021 16:11:21 +0000 (06:11 -1000)]
Merge tag 'usb-5.13-rc4' of git://git./linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt fixes from Greg KH:
 "Here are a number of tiny USB and Thunderbolt driver fixes for
  5.13-rc4.

  They consist of:

   - thunderbolt fixes for some NVM bound issues

   - xhci fixes for reported problems

   - control-request fixups

   - documentation build warning fixes

   - new usb-serial driver device ids

   - typec bugfixes for reported issues

   - usbfs warning fixups (could be triggered from userspace)

   - other tiny fixes for reported problems.

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

* tag 'usb-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (22 commits)
  xhci: Fix 5.12 regression of missing xHC cache clearing command after a Stall
  xhci: fix giving back URB with incorrect status regression in 5.12
  usb: gadget: udc: renesas_usb3: Fix a race in usb3_start_pipen()
  usb: typec: tcpm: Respond Not_Supported if no snk_vdo
  usb: typec: tcpm: Properly interrupt VDM AMS
  USB: trancevibrator: fix control-request direction
  usb: Restore the usb_header label
  usb: typec: tcpm: Use LE to CPU conversion when accessing msg->header
  usb: typec: ucsi: Clear pending after acking connector change
  usb: typec: mux: Fix matching with typec_altmode_desc
  misc/uss720: fix memory leak in uss720_probe
  usb: dwc3: gadget: Properly track pending and queued SG
  USB: usbfs: Don't WARN about excessively large memory allocations
  thunderbolt: usb4: Fix NVM read buffer bounds and offset issue
  thunderbolt: dma_port: Fix NVM read buffer bounds and offset issue
  usb: chipidea: udc: assign interrupt number to USB gadget structure
  usb: cdnsp: Fix lack of removing request from pending list.
  usb: cdns3: Fix runtime PM imbalance on error
  USB: serial: pl2303: add device id for ADLINK ND-6530 GC
  USB: serial: ti_usb_3410_5052: add startech.com device id
  ...

3 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 29 May 2021 16:02:25 +0000 (06:02 -1000)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "ARM fixes:

   - Another state update on exit to userspace fix

   - Prevent the creation of mixed 32/64 VMs

   - Fix regression with irqbypass not restarting the guest on failed
     connect

   - Fix regression with debug register decoding resulting in
     overlapping access

   - Commit exception state on exit to usrspace

   - Fix the MMU notifier return values

   - Add missing 'static' qualifiers in the new host stage-2 code

  x86 fixes:

   - fix guest missed wakeup with assigned devices

   - fix WARN reported by syzkaller

   - do not use BIT() in UAPI headers

   - make the kvm_amd.avic parameter bool

  PPC fixes:

   - make halt polling heuristics consistent with other architectures

  selftests:

   - various fixes

   - new performance selftest memslot_perf_test

   - test UFFD minor faults in demand_paging_test"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (44 commits)
  selftests: kvm: fix overlapping addresses in memslot_perf_test
  KVM: X86: Kill off ctxt->ud
  KVM: X86: Fix warning caused by stale emulation context
  KVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception
  KVM: x86/mmu: Fix comment mentioning skip_4k
  KVM: VMX: update vcpu posted-interrupt descriptor when assigning device
  KVM: rename KVM_REQ_PENDING_TIMER to KVM_REQ_UNBLOCK
  KVM: x86: add start_assignment hook to kvm_x86_ops
  KVM: LAPIC: Narrow the timer latency between wait_lapic_expire and world switch
  selftests: kvm: do only 1 memslot_perf_test run by default
  KVM: X86: Use _BITUL() macro in UAPI headers
  KVM: selftests: add shared hugetlbfs backing source type
  KVM: selftests: allow using UFFD minor faults for demand paging
  KVM: selftests: create alias mappings when using shared memory
  KVM: selftests: add shmem backing source type
  KVM: selftests: refactor vm_mem_backing_src_type flags
  KVM: selftests: allow different backing source types
  KVM: selftests: compute correct demand paging size
  KVM: selftests: simplify setup_demand_paging error handling
  KVM: selftests: Print a message if /dev/kvm is missing
  ...

3 years agoMerge tag 's390-5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Sat, 29 May 2021 15:51:53 +0000 (05:51 -1000)]
Merge tag 's390-5.13-3' of git://git./linux/kernel/git/s390/linux

Pull s390 fixes from Vasily Gorbik:
 "Fix races in vfio-ccw request handling"

* tag 's390-5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  vfio-ccw: Serialize FSM IDLE state with I/O completion
  vfio-ccw: Reset FSM state to IDLE inside FSM
  vfio-ccw: Check initialized flag in cp_init()

3 years agoselftests: kvm: fix overlapping addresses in memslot_perf_test
Paolo Bonzini [Fri, 28 May 2021 19:10:58 +0000 (15:10 -0400)]
selftests: kvm: fix overlapping addresses in memslot_perf_test

vm_create allocates memory and maps it close to GPA.  This memory
is separate from what is allocated in subsequent calls to
vm_userspace_mem_region_add, so it is incorrect to pass the
test memory size to vm_create_default.  Just pass a small
fixed amount of memory which can be used later for page table,
otherwise GPAs are already allocated at MEM_GPA and the
test aborts.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 29 May 2021 00:47:48 +0000 (14:47 -1000)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Ten small fixes, all in drivers"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: target: qla2xxx: Wait for stop_phase1 at WWN removal
  scsi: hisi_sas: Drop free_irq() of devm_request_irq() allocated irq
  scsi: vmw_pvscsi: Set correct residual data length
  scsi: bnx2fc: Return failure if io_req is already in ABTS processing
  scsi: aic7xxx: Remove multiple definition of globals
  scsi: aic7xxx: Restore several defines for aic7xxx firmware build
  scsi: target: iblock: Fix smp_processor_id() BUG messages
  scsi: libsas: Use _safe() loop in sas_resume_port()
  scsi: target: tcmu: Fix xarray RCU warning
  scsi: target: core: Avoid smp_processor_id() in preemptible code

3 years agoMerge tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 29 May 2021 00:42:37 +0000 (14:42 -1000)]
Merge tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request (Christoph):
      - fix a memory leak in nvme_cdev_add (Guoqing Jiang)
      - fix inline data size comparison in nvmet_tcp_queue_response (Hou
        Pu)
      - fix false keep-alive timeout when a controller is torn down
        (Sagi Grimberg)
      - fix a nvme-tcp Kconfig dependency (Sagi Grimberg)
      - short-circuit reconnect retries for FC (Hannes Reinecke)
      - decode host pathing error for connect (Hannes Reinecke)

 - MD pull request (Song):
      - Fix incorrect chunk boundary assert (Christoph)

 - Fix s390/dasd verification panic (Stefan)

* tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block:
  nvmet: fix false keep-alive timeout when a controller is torn down
  nvmet-tcp: fix inline data size comparison in nvmet_tcp_queue_response
  nvme-tcp: remove incorrect Kconfig dep in BLK_DEV_NVME
  md/raid5: remove an incorrect assert in in_chunk_boundary
  s390/dasd: add missing discipline function
  nvme-fabrics: decode host pathing error for connect
  nvme-fc: short-circuit reconnect retries
  nvme: fix potential memory leaks in nvme_cdev_add

3 years agoMerge tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 29 May 2021 00:35:55 +0000 (14:35 -1000)]
Merge tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A few minor fixes:

   - Fix an issue with hashed wait removal on exit (Zqiang, Pavel)

   - Fix a recent data race introduced in this series (Marco)"

* tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block:
  io_uring: fix data race to avoid potential NULL-deref
  io-wq: Fix UAF when wakeup wqe in hash waitqueue
  io_uring/io-wq: close io-wq full-stop gap

3 years agoMerge tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Sat, 29 May 2021 00:28:58 +0000 (14:28 -1000)]
Merge tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Pretty quiet this week, couple of amdgpu, one i915, and a few misc otherwise.

  ttm:
   - prevent irrelevant swapout

  amdgpu:
   - MultiGPU fan fix
   - VCN powergating fixes

  amdkfd:
   - Fix SDMA register offset error

  meson:
   - fix shutdown crash

  i915:
   - Re-enable LTTPR non-transparent LT mode for DPCD_REV < 1.4"

* tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm:
  drm/ttm: Skip swapout if ttm object is not populated
  drm/i915: Reenable LTTPR non-transparent LT mode for DPCD_REV<1.4
  drm/meson: fix shutdown crash when component not probed
  drm/amdgpu/jpeg3: add cancel_delayed_work_sync before power gate
  drm/amdgpu/jpeg2.5: add cancel_delayed_work_sync before power gate
  drm/amdgpu/jpeg2.0: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn3: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn2.5: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn2.0: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn1: add cancel_delayed_work_sync before power gate
  drm/amdkfd: correct sienna_cichlid SDMA RLC register offset error
  drm/amd/pm: correct MGpuFanBoost setting

3 years agoMerge tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sat, 29 May 2021 00:23:05 +0000 (14:23 -1000)]
Merge tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git./linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix error checking of BPF prog attachment in 'perf stat'.

 - Fix getting maximum number of fds in the vendor events JSON parser.

 - Move debug initialization earlier, fixing a segfault in some cases.

 - Fix eventcode of power10 JSON events.

* tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf vendor events powerpc: Fix eventcode of power10 JSON events
  perf stat: Fix error check for bpf_program__attach
  perf debug: Move debug initialization earlier
  perf jevents: Fix getting maximum number of fds

3 years agoMerge tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 29 May 2021 00:15:47 +0000 (14:15 -1000)]
Merge tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Three SMB3 fixes.

  Two for stable, and the other fixes a problem pointed out with a
  recently added ioctl"

* tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: change format of CIFS_FULL_KEY_DUMP ioctl
  cifs: fix string declarations and assignments in tracepoints
  cifs: set server->cipher_type to AES-128-CCM for SMB3.0

3 years agoMerge tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Fri, 28 May 2021 18:53:19 +0000 (08:53 -1000)]
Merge tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
"Stable fixes:
   - Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config
   - Fix Oops in xs_tcp_send_request() when transport is disconnected
   - Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()

  Bugfixes:
   - Fix instances where signal_pending() should be fatal_signal_pending()
   - fix an incorrect limit in filelayout_decode_layout()
   - Fixes for the SUNRPC backlogged RPC queue
   - Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
   - Revert commit 586a0787ce35 ("Clean up rpcrdma_prepare_readch()")"

* tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs: Remove trailing semicolon in macros
  xprtrdma: Revert 586a0787ce35
  NFSv4: Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config
  NFS: Clean up reset of the mirror accounting variables
  NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
  NFS: Fix an Oopsable condition in __nfs_pageio_add_request()
  SUNRPC: More fixes for backlog congestion
  SUNRPC: Fix Oops in xs_tcp_send_request() when transport is disconnected
  NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
  SUNRPC in case of backlog, hand free slots directly to waiting task
  pNFS/NFSv4: Remove redundant initialization of 'rd_size'
  NFS: fix an incorrect limit in filelayout_decode_layout()
  fs/nfs: Use fatal_signal_pending instead of signal_pending

3 years agoMerge tag 'sound-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 28 May 2021 18:47:50 +0000 (08:47 -1000)]
Merge tag 'sound-5.13-rc4' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A slightly high volume at this time due to pending ASoC fixes.

  While there are a few generic simple-card fixes for regressions, most
  of the changes are device-specific fixes: ASoC Intel SOF, codec
  clocks, other codec / platform fixes as well as usual HD-audio and
  USB-audio"

* tag 'sound-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (37 commits)
  ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook Fury 17 G8
  ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook Fury 15 G8
  ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook G8
  ALSA: hda/realtek: fix mute/micmute LEDs for HP 855 G8
  ALSA: hda/realtek: Chain in pop reduction fixup for ThinkStation P340
  ALSA: usb-audio: scarlett2: snd_scarlett_gen2_controls_create() can be static
  ALSA: hda/realtek: the bass speaker can't output sound on Yoga 9i
  ALSA: hda/realtek: Headphone volume is controlled by Front mixer
  ALSA: usb-audio: scarlett2: Improve driver startup messages
  ALSA: usb-audio: scarlett2: Fix device hang with ehci-pci
  ALSA: usb-audio: fix control-request direction
  ASoC: qcom: lpass-cpu: Use optional clk APIs
  ASoC: cs35l33: fix an error code in probe()
  ASoC: SOF: Intel: hda: don't send DAI_CONFIG IPC for older firmware
  ASoC: fsl: fix SND_SOC_IMX_RPMSG dependency
  ASoC: cs42l52: Minor tidy up of error paths
  ASoC: cs35l32: Add missing regmap use_single config
  ASoC: cs35l34: Add missing regmap use_single config
  ASoC: cs42l73: Add missing regmap use_single config
  ASoC: cs53l30: Add missing regmap use_single config
  ...

3 years agoMerge tag 'clang-features-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 28 May 2021 18:31:48 +0000 (08:31 -1000)]
Merge tag 'clang-features-v5.13-rc4' of git://git./linux/kernel/git/kees/linux

Pull clang feature fixes from Kees Cook:

 - Correctly pass stack frame size checking under LTO (Nick Desaulniers)

 - Avoid CFI mismatches by checking initcall_t types (Marco Elver)

* tag 'clang-features-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  Makefile: LTO: have linker check -Wframe-larger-than
  init: verify that function is initcall_t at compile-time

3 years agoMerge tag 'mips-fixes_5.13_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips...
Linus Torvalds [Fri, 28 May 2021 18:24:13 +0000 (08:24 -1000)]
Merge tag 'mips-fixes_5.13_1' of git://git./linux/kernel/git/mips/linux

Pull MIPS fixes from Thomas Bogendoerfer:

 - fix function/preempt trace hangs

 - a few build fixes

* tag 'mips-fixes_5.13_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: Fix kernel hang under FUNCTION_GRAPH_TRACER and PREEMPT_TRACER
  MIPS: ralink: export rt_sysc_membase for rt2880_wdt.c
  MIPS: launch.h: add include guard to prevent build errors
  MIPS: alchemy: xxs1500: add gpio-au1000.h header file

3 years agoMerge tag 'kvmarm-fixes-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Paolo Bonzini [Fri, 28 May 2021 17:02:03 +0000 (13:02 -0400)]
Merge tag 'kvmarm-fixes-5.13-2' of git://git./linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 5.13, take #2

- Another state update on exit to userspace fix
- Prevent the creation of mixed 32/64 VMs

3 years agoKVM: X86: Kill off ctxt->ud
Wanpeng Li [Fri, 28 May 2021 00:01:37 +0000 (17:01 -0700)]
KVM: X86: Kill off ctxt->ud

ctxt->ud is consumed only by x86_decode_insn(), we can kill it off by
passing emulation_type to x86_decode_insn() and dropping ctxt->ud
altogether. Tracking that info in ctxt for literally one call is silly.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <1622160097-37633-2-git-send-email-wanpengli@tencent.com>

3 years agoKVM: X86: Fix warning caused by stale emulation context
Wanpeng Li [Fri, 28 May 2021 00:01:36 +0000 (17:01 -0700)]
KVM: X86: Fix warning caused by stale emulation context

Reported by syzkaller:

  WARNING: CPU: 7 PID: 10526 at linux/arch/x86/kvm//x86.c:7621 x86_emulate_instruction+0x41b/0x510 [kvm]
  RIP: 0010:x86_emulate_instruction+0x41b/0x510 [kvm]
  Call Trace:
   kvm_mmu_page_fault+0x126/0x8f0 [kvm]
   vmx_handle_exit+0x11e/0x680 [kvm_intel]
   vcpu_enter_guest+0xd95/0x1b40 [kvm]
   kvm_arch_vcpu_ioctl_run+0x377/0x6a0 [kvm]
   kvm_vcpu_ioctl+0x389/0x630 [kvm]
   __x64_sys_ioctl+0x8e/0xd0
   do_syscall_64+0x3c/0xb0
   entry_SYSCALL_64_after_hwframe+0x44/0xae

Commit 4a1e10d5b5d8 ("KVM: x86: handle hardware breakpoints during emulation())
adds hardware breakpoints check before emulation the instruction and parts of
emulation context initialization, actually we don't have the EMULTYPE_NO_DECODE flag
here and the emulation context will not be reused. Commit c8848cee74ff ("KVM: x86:
set ctxt->have_exception in x86_decode_insn()) triggers the warning because it
catches the stale emulation context has #UD, however, it is not during instruction
decoding which should result in EMULATION_FAILED. This patch fixes it by moving
the second part emulation context initialization into init_emulate_ctxt() and
before hardware breakpoints check. The ctxt->ud will be dropped by a follow-up
patch.

syzkaller source: https://syzkaller.appspot.com/x/repro.c?x=134683fdd00000

Reported-by: syzbot+71271244f206d17f6441@syzkaller.appspotmail.com
Fixes: 4a1e10d5b5d8 (KVM: x86: handle hardware breakpoints during emulation)
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <1622160097-37633-1-git-send-email-wanpengli@tencent.com>

3 years agoKVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception
Yuan Yao [Wed, 26 May 2021 06:38:28 +0000 (14:38 +0800)]
KVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception

The kvm_get_linear_rip() handles x86/long mode cases well and has
better readability, __kvm_set_rflags() also use the paired
function kvm_is_linear_rip() to check the vcpu->arch.singlestep_rip
set in kvm_arch_vcpu_ioctl_set_guest_debug(), so change the
"CS.BASE + RIP" code in kvm_arch_vcpu_ioctl_set_guest_debug() and
handle_exception_nmi() to this one.

Signed-off-by: Yuan Yao <yuan.yao@intel.com>
Message-Id: <20210526063828.1173-1-yuan.yao@linux.intel.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoDocumentation: seccomp: Fix user notification documentation
Sargun Dhillon [Mon, 17 May 2021 19:39:05 +0000 (12:39 -0700)]
Documentation: seccomp: Fix user notification documentation

The documentation had some previously incorrect information about how
userspace notifications (and responses) were handled due to a change
from a previously proposed patchset.

Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Tycho Andersen <tycho@tycho.pizza>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210517193908.3113-2-sargun@sargun.me
3 years agoMAINTAINERS: adjust to removing i2c designware platform data
Lukas Bulwahn [Mon, 19 Apr 2021 06:18:09 +0000 (08:18 +0200)]
MAINTAINERS: adjust to removing i2c designware platform data

Commit 5a517b5bf687 ("i2c: designware: Get rid of legacy platform data")
removes ./include/linux/platform_data/i2c-designware.h, but misses to
adjust the SYNOPSYS DESIGNWARE I2C DRIVER section in MAINTAINERS.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains:

  warning: no file matches F: include/linux/platform_data/i2c-designware.h

Remove the file entry to this removed file as well.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
3 years agoperf vendor events powerpc: Fix eventcode of power10 JSON events
Kajol Jain [Tue, 25 May 2021 06:37:23 +0000 (12:07 +0530)]
perf vendor events powerpc: Fix eventcode of power10 JSON events

Fixed the eventcode values in the power10 JSON event files to prepend
"0x" since these are hexadecimal values.

The patch also changes the event description of the PM_EXEC_STALL_LOAD_FINISH
and PM_EXEC_STALL_NTC_FLUSH event and move some events to correct files.

Fixes: 32daa5d7899e ("perf vendor events: Initial JSON/events list for power10 platform")
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Reviewed-by: Paul A. Clarke <pc@us.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lore.kernel.org/lkml/20210525063723.1191514-1-kjain@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoRevert "serial: 8250: 8250_omap: Fix possible interrupt storm"
Greg Kroah-Hartman [Fri, 28 May 2021 08:58:49 +0000 (10:58 +0200)]
Revert "serial: 8250: 8250_omap: Fix possible interrupt storm"

This reverts commit 31fae7c8b18c3f8029a2a5dce97a3182c1a167a0.

Tony writes:
I just noticed this causes the following regression in Linux
next when pressing a key on uart console after boot at least on
omap3. This seems to happen on serial_port_in(port, UART_RX) in
the quirk handling.

So let's drop this.

Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/YLCCJzkkB4N7LTQS@atomide.com
Fixes: 31fae7c8b18c ("serial: 8250: 8250_omap: Fix possible interrupt storm")
Reported-by: Tony Lindgren <tony@atomide.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
3 years agoi2c: s3c2410: fix possible NULL pointer deref on read message after write
Krzysztof Kozlowski [Wed, 26 May 2021 12:39:37 +0000 (08:39 -0400)]
i2c: s3c2410: fix possible NULL pointer deref on read message after write

Interrupt handler processes multiple message write requests one after
another, till the driver message queue is drained.  However if driver
encounters a read message without preceding START, it stops the I2C
transfer as it is an invalid condition for the controller.  At least the
comment describes a requirement "the controller forces us to send a new
START when we change direction".  This stop results in clearing the
message queue (i2c->msg = NULL).

The code however immediately jumped back to label "retry_write" which
dereferenced the "i2c->msg" making it a possible NULL pointer
dereference.

The Coverity analysis:
1. Condition !is_msgend(i2c), taking false branch.
   if (!is_msgend(i2c)) {

2. Condition !is_lastmsg(i2c), taking true branch.
   } else if (!is_lastmsg(i2c)) {

3. Condition i2c->msg->flags & 1, taking true branch.
   if (i2c->msg->flags & I2C_M_RD) {

4. write_zero_model: Passing i2c to s3c24xx_i2c_stop, which sets i2c->msg to NULL.
   s3c24xx_i2c_stop(i2c, -EINVAL);

5. Jumping to label retry_write.
   goto retry_write;

6. var_deref_model: Passing i2c to is_msgend, which dereferences null i2c->msg.
   if (!is_msgend(i2c)) {"

All previous calls to s3c24xx_i2c_stop() in this interrupt service
routine are followed by jumping to end of function (acknowledging
the interrupt and returning).  This seems a reasonable choice also here
since message buffer was entirely emptied.

Addresses-Coverity: Explicit null dereferenced
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>