In order to better track where in the kernel the dma-buf code is used,
put the symbols in the namespace DMA_BUF and modify all users of the
symbols to properly import the namespace to not break the build at the
same time.

Now the output of modinfo shows the use of these symbols, making it
easier to watch for users over time:

$ modinfo drivers/misc/fastrpc.ko | grep import
import_ns:      DMA_BUF

Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: dri-devel@lists.freedesktop.org
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NChristian König <christian.koenig@amd.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NSumit Semwal <sumit.semwal@linaro.org>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20211010124628.17691-1-gregkh@linuxfoundation.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Introduce REPORT_STACK_CANARY to check for differing stack canaries
between two processes (i.e. that an architecture is correctly implementing
per-task stack canaries), using the task_struct canary as the hint to
locate in the stack. Requires that one of the processes being tested
not be pid 1.

Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NKees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20211022223826.330653-3-keescook@chromium.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Some LKDTM tests need to be run more than once (usually to setup and
then later trigger). Until now, the only case was the SOFT_LOCKUP test,
which wasn't useful to run in the bulk selftests. The coming stack canary
checking needs to run twice, so support this with a new test output prefix
"repeat".
Signed-off-by: NKees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20211022223826.330653-2-keescook@chromium.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'soundwire-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next

Vinod writes:

soundwire updates for 5.16-rc1

 - Update on sysfs wildcard documentation
 - debugfs update for core and qcom driver
 - invalid slave pointer fix for bus

* tag 'soundwire-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
  soundwire: qcom: add debugfs entry for soundwire register dump
  soundwire: bus: stop dereferencing invalid slave pointer
  ABI: sysfs-bus-soundwire-slave: use wildcards on What definitions
  ABI: sysfs-bus-soundwire-master: use wildcards on What definitions
  soundwire: debugfs: use controller id and link_id for debugfs

Clang warns:

drivers/iio/frequency/adrf6780.c:117:1: error: all paths through this
function will call itself [-Werror,-Winfinite-recursion]
{
^
drivers/iio/frequency/adrf6780.c:138:1: error: all paths through this
function will call itself [-Werror,-Winfinite-recursion]
{
^
2 errors generated.

The underscore variants should be used here.

Link: https://github.com/ClangBuiltLinux/linux/issues/1490
Fixes: 63aaf6d0 ("iio: frequency: adrf6780: add support for ADRF6780")
Acked-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: NNathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20211022195656.1513147-1-nathan@kernel.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'iio-for-5.16b' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

2nd set of IIO new driver, cleanups and features for the 5.16 cycle

New device support
* adrf6780 microwave upconverter.
  - New driver for this interesting device including bindings.

Features
* lite-on ltr501
  - Add dt-bindings including vendor ID and of_device_id table.
  - Add regulator support.
* sensiron,scd4x
  - Add reporting of channel scale.

Cleanups including fixes for things in this cycle
* Tree wide: Another set of dev_err_probe() introductions to reduce
  noise in logs when deferred probing is needed and provide more debug
  info. Devices included this time:
  - amlogic,meson_saradc
  - capella,cm3605
  - fsl,imx7d
  - maxim,max1118
  - maxim,max1241
  - nxp,lpc18xx
  - qcom,pm8xxxx-xoadc
  - rockchip,saradc
  - sharp,gp2ap002
  - sterricson,ab8500
  - ti,ads7950
* core - iio:buffer
  - Fix a path where a ret value is not intialized.
* channel-mux
  - Add support to mux core subsystem for a settling delay and use
    it in the iio-channel-mux driver.
  - Fix a few dt binding warnings.
* nxp,lpc18xx
  - Convert to devm_ functions for all of probe and drop remove()
* st,lsm6dsx
  - Suppress a warning due to lack of handling of an enum *_MAX entry
    that is just there to get the size.
* st,stm32-adc
  - Add generic channel binding, deprecating the old approach.
  - Add nvmem support to get calibration data for the vrefint channel and
    use it to perform such calibration.
  - Add a binding for sample-time to the generic channel description as it
    can be per channel.
* ti,adc128s052
  - Use devm_ managed functions and drop remove()
* vti,sca3000
  - Use sign_extend32() rather than opencoding.
* xilinx,xadc
  - Drop irq field from state structure as now just used in probe.

* tag 'iio-for-5.16b' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (36 commits)
  dt-bindings: iio: frequency: add adrf6780 doc
  iio: frequency: adrf6780: add support for ADRF6780
  iio: chemical: scd4x: Add a scale for the co2 concentration reading
  dt-bindings: iio: io-channel-mux: allow duplicate channel, labels
  dt-bindings: iio: io-channel-mux: add optional #io-channel-cells
  iio: adc: adc128s052: Simplify adc128_probe()
  iio: multiplexer: iio-mux: Support settle-time-us property
  dt-bindings: iio: io-channel-mux: Add property for settle time
  mux: add support for delay after muxing
  iio: adc: stm32-adc: use generic binding for sample-time
  iio: adc: stm32-adc: add vrefint calibration support
  iio: adc: stm32-adc: add support of internal channels
  iio: adc: stm32-adc: add support of generic channels binding
  iio: adc: stm32-adc: split channel init into several routines
  dt-bindings: iio: stm32-adc: add nvmem support for vrefint internal channel
  dt-bindings: iio: stm32-adc: add generic channel binding
  iio: accel: sca3000: Use sign_extend32() instead of opencoding sign extension.
  iio: xilinx-xadc: Remove `irq` field from state struct
  iio: imu: st_lsm6dsx: Avoid potential array overflow in st_lsm6dsx_set_odr()
  iio: light: gp2ap002: Make use of the helper function dev_err_probe()
  ...

Merge tag 'iio-fixes-for-5.16a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

First set of IIO fixes for the 5.16 cycle

As these are very late in the 5.15 cycle and non are particularly urgent,
they can wait for the merge window.

Key element in this set is Yang Yingliang has identified a number of
issues in error paths introduced recently when we added multiple
buffer support.

Other fixes:
* adi,ad5662
  - Fix handling of i2c_master_send() return value.
* adi,ad5766
  - Fix a wrong dt-property name that indicated wrong units and
    did not mach the bindings.
  - Associated 'fix' of the bindings example to have a possible scale.
* st,pressure-spi
  - Add some missing entries to the spi_device_id table to ensure
    auto-loading works.
* ti,tsc2046
  - Fix a backwards comparison leading to a false dev_warn

* tag 'iio-fixes-for-5.16a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
  iio: buffer: Fix memory leak in iio_buffers_alloc_sysfs_and_mask()
  iio: adc: tsc2046: fix scan interval warning
  iio: core: fix double free in iio_device_unregister_sysfs()
  iio: core: check return value when calling dev_set_name()
  iio: buffer: Fix memory leak in iio_buffer_register_legacy_sysfs_groups()
  iio: buffer: Fix double-free in iio_buffers_alloc_sysfs_and_mask()
  iio: buffer: Fix memory leak in __iio_buffer_alloc_sysfs_and_mask()
  iio: buffer: check return value of kstrdup_const()
  iio: dac: ad5446: Fix ad5622_write() return value
  Documentation:devicetree:bindings:iio:dac: Fix val
  drivers: iio: dac: ad5766: Fix dt property name
  iio: st_pressure_spi: Add missing entries SPI to device ID table

coccicheck complains about the use of snprintf() in sysfs show
functions:
WARNING  use scnprintf or sprintf

Use sysfs_emit instead of scnprintf or sprintf makes more sense.
Reported-by: NZeal Robot <zealci@zte.com.cn>
Signed-off-by: NYe Guojin <ye.guojin@zte.com.cn>
Link: https://lore.kernel.org/r/20211022090604.1065367-1-ye.guojin@zte.com.cnSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'icc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc into char-misc-next

Georgi writes:

interconnect changes for 5.16

Here are the changes for the 5.16-rc1 merge window consisting of just
driver updates. The highlight is the refactoring of some existing drivers
into common code and expanding some macros that will make adding QoS
support much easier.

Driver changes:
- icc-rpm: move bus clocks handling into qnoc_probe
- sdm660: expand DEFINE_QNODE macros
- sdm660: drop default/unused values
- sdm660: merge common code into icc-rpm
- icc-rpm: add support for QoS reg offset
- msm8916: expand DEFINE_QNODE macros
- msm8916: add support for AP-owned nodes
- msm8939: expand DEFINE_QNODE macros
- msm8939: add support for AP-owned nodes
- qcs404: expand DEFINE_QNODE macros
- qcom: drop DEFINE_QNODE macro
- samsung: describe drivers in KConfig
Signed-off-by: NGeorgi Djakov <djakov@kernel.org>

* tag 'icc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
  interconnect: samsung: describe drivers in KConfig
  interconnect: qcom: drop DEFINE_QNODE macro
  interconnect: qcs404: expand DEFINE_QNODE macros
  interconnect: msm8939: add support for AP-owned nodes
  interconnect: msm8939: expand DEFINE_QNODE macros
  interconnect: msm8916: add support for AP-owned nodes
  interconnect: msm8916: expand DEFINE_QNODE macros
  interconnect: icc-rpm: add support for QoS reg offset
  interconnect: sdm660: merge common code into icc-rpm
  interconnect: sdm660: drop default/unused values
  interconnect: sdm660: expand DEFINE_QNODE macros
  interconnect: icc-rpm: move bus clocks handling into qnoc_probe

Merge tag 'fsi-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi into char-misc-next

Joel writes:

FSI changes for v5.16

 - SBEFIFO usersapce interfaces to perform FFDC (First Failure
   Data Capture) and detect timeouts

 - A fix to handle multiple messages in flight

* tag 'fsi-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi:
  fsi: sbefifo: Use interruptible mutex locking
  fsi: sbefifo: Add sysfs file indicating a timeout error
  docs: ABI: testing: Document the SBEFIFO timeout interface
  hwmon: (occ) Provide the SBEFIFO FFDC in binary sysfs
  docs: ABI: testing: Document the OCC hwmon FFDC binary interface
  fsi: occ: Store the SBEFIFO FFDC in the user response buffer
  fsi: occ: Use a large buffer for responses
  hwmon: (occ) Remove sequence numbering and checksum calculation
  fsi: occ: Force sequence numbering per OCC

Some SBE operations have extremely large responses and can require
several minutes to process the response. During this time, the device
lock must be held. If another process attempts an operation, it will
wait for the mutex for longer than the kernel hung task watchdog
allows. Therefore, use the interruptible function to lock the mutex.
Signed-off-by: NEddie James <eajames@linux.ibm.com>
Reviewed-by: NJoel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210803213016.44739-1-eajames@linux.ibm.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

The SBEFIFO timeout error requires special handling in userspace
to do recovery operations. Add a sysfs file to indicate a timeout
error, and notify pollers when a timeout occurs.

This will be used by the openpower-occ-control application.
Signed-off-by: NEddie James <eajames@linux.ibm.com>
Reviewed-by: NJoel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20211019211749.38059-3-eajames@linux.ibm.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

Add documentation for the new sysfs entry that indicates whether or not
the SBE has timed out.
Signed-off-by: NEddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20211019211749.38059-2-eajames@linux.ibm.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

Save any FFDC provided by the OCC driver, and provide it to userspace
through a binary sysfs entry. Notify userspace pollers when there is an
error too.
Signed-off-by: NEddie James <eajames@linux.ibm.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20211019205307.36946-5-eajames@linux.ibm.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

Add documentation for the new binary sysfs that will dump the SBEFIFO
FFDC.
Signed-off-by: NEddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20211019205307.36946-4-eajames@linux.ibm.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

If the SBEFIFO response indicates an error, store the response in the
user buffer and return an error. Previously, the user had no way of
obtaining the SBEFIFO FFDC.

The user's buffer now contains data in the event of a failure. No change
in the event of a successful transfer.
Signed-off-by: NEddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20211019205307.36946-3-eajames@linux.ibm.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

Allocate a large buffer for each OCC to handle response data. This
removes memory allocation during an operation, and also allows for
the maximum amount of SBE FFDC.

Previously for the putsram and attn commands, only 32 words would have
been available, and for getsram, only up to the size of the transfer.
SBE FFDC might be up to 8Kb.

The SBE interface expects data to be specified in units of words (4
bytes), defined as OCC_MAX_RESP_WORDS.

This change allows the full FFDC capture to be implemented, where before
it was not available.
Signed-off-by: NEddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20211019205307.36946-2-eajames@linux.ibm.comSigned-off-by: NJoel Stanley <joel@jms.id.au>

Add device tree bindings for the ADRF6780 Upconverter.
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NAntoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://lore.kernel.org/r/20211021113244.56936-2-antoniu.miclaus@analog.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

The ADRF6780 is a silicon germanium (SiGe) design, wideband,
microwave upconverter optimized for point to point microwave
radio designs operating in the 5.9 GHz to 23.6 GHz frequency
range.

Datasheet:
https://www.analog.com/media/en/technical-documentation/data-sheets/ADRF6780.pdfSigned-off-by: NAntoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://lore.kernel.org/r/20211021113244.56936-1-antoniu.miclaus@analog.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

This patch adds a scale for the co2 concentration reading. The reading is
expressed in percent after applying the scale to the raw value.
Signed-off-by: NRoan van Dijk <roan@protonic.nl>
Link: https://lore.kernel.org/r/20211021140018.3051213-1-roan@protonic.nlSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

This is needed since an empty channel label is used to indicate an
unused channel, and there can be more that one of those.

Fixes the following problem reported by dtbs_check:
envelope-detector-mux: channels: ['', '', 'sync-1', 'in', 'out', 'sync-2', 'sys-reg', 'ana-reg'] has non-unique elements
	arch/arm/boot/dts/at91-tse850-3.dt.yaml
Suggested-by: NRob Herring <robh@kernel.org>
Signed-off-by: NPeter Rosin <peda@axentia.se>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Needed for in-kernel use of the child channels of the mux.

Fixes problems like this, reported by dtbs_check:
adc0mux: '#io-channel-cells' does not match any of the regexes: 'pinctrl-[0-9]+'
	arch/arm/boot/dts/aspeed-bmc-ampere-mtjade.dt.yaml
Suggested-by: NVincent Whitchurch <vincent.whitchurch@axis.com>
Signed-off-by: NPeter Rosin <peda@axentia.se>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Turn 'adc128_probe()' into a full resource managed function to simplify the
code.

This way, the .remove function can be removed.
Doing so, the only 'spi_get_drvdata()' call is removed and the
corresponding 'spi_set_drvdata()' can be removed as well.
Suggested-by: NAlexandru Ardelean <ardeleanalex@gmail.com>
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: NAlexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/4fa7fcc59c40e27af0569138d656c698a53dbd44.1630002770.git.christophe.jaillet@wanadoo.frSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

If the devicetree specifies that the hardware requires a settle time,
pass this time on to the mux APIs.
Signed-off-by: NVincent Whitchurch <vincent.whitchurch@axis.com>
Reviewed-by: NLars-Peter Clausen <lars@metafoo.de>
Tested-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NPeter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/20211007134641.13417-4-vincent.whitchurch@axis.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Hardware may require some time for the muxed analog signals to settle
after the muxing is changed.  Allow this time to be specified in the
devicetree.
Signed-off-by: NVincent Whitchurch <vincent.whitchurch@axis.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Reviewed-by: NLars-Peter Clausen <lars@metafoo.de>
Tested-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NPeter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/20211007134641.13417-3-vincent.whitchurch@axis.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Hardware may require some time for the muxed analog signals to settle
after the muxing is changed.  Allow users of the mux subsystem to
specify this delay with the new mux_control_select_delay() function (and
the _try equivalent).
Signed-off-by: NVincent Whitchurch <vincent.whitchurch@axis.com>
Reviewed-by: NLars-Peter Clausen <lars@metafoo.de>
Tested-by: NLars-Peter Clausen <lars@metafoo.de>
Acked-by: NPeter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/20211007134641.13417-2-vincent.whitchurch@axis.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

A race condition is possible when writing to events_queue_size where the
events kfifo is freed during the execution of a kfifo_in(), resulting in
a use-after-free. This patch prevents such a scenario by protecting the
events queue in operation with a spinlock and locking before performing
the events queue size adjustment.

The existing events_lock mutex is renamed to events_out_lock to reflect
that it only protects events queue out operations. Because the events
queue in operations can occur in an interrupt context, a new
events_in_lock spinlock is introduced and utilized.

Fixes: feff17a5 ("counter: Implement events_queue_size sysfs attribute")
Cc: David Lechner <david@lechnology.com>
Signed-off-by: NWilliam Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/20211021103540.955639-1-vilhelm.gray@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

With the removal of the chrdev_lock atomic flag, the counter-sysfs.c and
counter-chrdev.c no longer needs to include the atomic.h header file.
Signed-off-by: NWilliam Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/20211021103514.955622-1-vilhelm.gray@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

When 'iio_dev_opaque->buffer_ioctl_handler' alloc fails in
iio_buffers_alloc_sysfs_and_mask(), the 'attrs' allocated in
iio_buffer_register_legacy_sysfs_groups() will be leaked:

unreferenced object 0xffff888108568d00 (size 128):
  comm "88", pid 2014, jiffies 4294963294 (age 26.920s)
  hex dump (first 32 bytes):
    80 3e da 02 80 88 ff ff 00 3a da 02 80 88 ff ff  .>.......:......
    00 35 da 02 80 88 ff ff 00 38 da 02 80 88 ff ff  .5.......8......
  backtrace:
    [<0000000095a9e51e>] __kmalloc+0x1a3/0x2f0
    [<00000000faa3735e>] iio_buffers_alloc_sysfs_and_mask+0xfa3/0x1480 [industrialio]
    [<00000000a46384dc>] __iio_device_register+0x52e/0x1b40 [industrialio]
    [<00000000210af05e>] __devm_iio_device_register+0x22/0x80 [industrialio]
    [<00000000730d7b41>] adjd_s311_probe+0x195/0x200 [adjd_s311]
    [<00000000c0f70eb9>] i2c_device_probe+0xa07/0xbb0

The iio_buffer_register_legacy_sysfs_groups() is
called in __iio_buffer_alloc_sysfs_and_mask(),
so move the iio_buffer_unregister_legacy_sysfs_groups()
into __iio_buffer_free_sysfs_and_mask(), then the memory
will be freed.
Reported-by: NHulk Robot <hulkci@huawei.com>
Fixes: d9a62574 ("iio: core: merge buffer/ & scan_elements/ attributes")
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20211018063718.1971240-1-yangyingliang@huawei.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

For debug purposes add an entry in debugfs to dump Qualcomm
SoundWire Controller registers.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210907105636.3171-1-srinivas.kandagatla@linaro.orgSigned-off-by: NVinod Koul <vkoul@kernel.org>

Slave pointer is invalid after end of list iteration, using this
would result in below Memory abort.

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000004
...
Call trace:
 __dev_printk+0x34/0x7c
 _dev_warn+0x6c/0x90
 sdw_bus_exit_clk_stop+0x194/0x1d0
 swrm_runtime_resume+0x13c/0x238
 pm_generic_runtime_resume+0x2c/0x48
 __rpm_callback+0x44/0x150
 rpm_callback+0x6c/0x78
 rpm_resume+0x314/0x558
 rpm_resume+0x378/0x558
 rpm_resume+0x378/0x558
 __pm_runtime_resume+0x3c/0x88

Use bus->dev instead to print this error message.

Fixes: b50bb8ba ("soundwire: bus: handle -ENODATA errors in clock stop/start sequences")
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211012101521.32087-1-srinivas.kandagatla@linaro.orgSigned-off-by: NVinod Koul <vkoul@kernel.org>

Add st,min-sample-time-nsecs to channel generic binding.
Sample time can be defined par channel node. If a channel
is configured as differential, the same sample time applies
for both inputs.
Keep support of legacy st,min-sample-time-nsecs property
for backward compatibility.
Signed-off-by: NOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: NFabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20211014131228.4692-8-olivier.moysan@foss.st.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add support of vrefint calibration.
If a channel is labeled as vrefint, get vrefint calibration
from non volatile memory for this channel.
vrefint channel is exposed as a processed channel returning
the actual value of vrefp:
vrefp = 3.3 x vrefint_cal / vrefint_data

A conversion on vrefint channel allows to update scale
factor according to vrefint deviation, compared to vrefint
calibration value.
Signed-off-by: NOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: NFabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20211014131228.4692-7-olivier.moysan@foss.st.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add support of ADC2 internal channels VDDCORE, VREFINT and VBAT.
The reserved label name "vddcore", "vrefint" and "vbat" must
be used in Device Tree channel node, to enable the corresponding
internal channel.

Note: This patch does not provide support of internal channels
for F4 and H7.
Signed-off-by: NOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: NFabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20211014131228.4692-6-olivier.moysan@foss.st.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add support of generic IIO channel binding:
./devicetree/bindings/iio/adc/adc.yaml
Keep support of st,adc-channels and st,adc-diff-channels
for backward compatibility.
Signed-off-by: NOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: NFabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20211014131228.4692-5-olivier.moysan@foss.st.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Split stm32_adc_chan_of_init channel initialization function into
several routines to increase readability and prepare channel
generic binding handling.
Signed-off-by: NOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: NFabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20211014131228.4692-4-olivier.moysan@foss.st.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add support of nvmem. This allows to retrieve calibration data from OTP
for vrefint internal channel.
Signed-off-by: NOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: NFabrice Gasnier <fabrice.gasnier@foss.st.com>
Acked-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211014131228.4692-3-olivier.moysan@foss.st.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add ADC generic channel binding. This binding should
be used as an alternate to legacy channel properties
whenever possible.
ADC generic channel binding allows to identify supported
internal channels through the following reserved label names:
"vddcore", "vrefint" and "vbat".
This binding also allows to set a different sampling time
for each channel.
Signed-off-by: NOlivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: NFabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211014131228.4692-2-olivier.moysan@foss.st.comSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Whilst nice to get rid of this non obvious code, this also clears a
static checker warning:

drivers/iio/accel/sca3000.c:734 sca3000_read_raw()
warn: no-op. '((*val) << 19) >> 19'
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: NLars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211017160303.72441-1-jic23@kernel.org

Since commit 2a9685d1 ("iio: adc: xilinx: use more devres helpers and
remove remove()") the `irq` field from XADC driver state struct is only
used in the `probe()` function.

Use the local `irq` variable throughout the `probe()` function and remove
the now unused field from the state struct.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211017121551.24063-1-lars@metafoo.deSigned-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>