i2c: Make remove callback return void

The value returned by an i2c driver's remove function is mostly ignored.
(Only an error message is printed if the value is non-zero that the
error is ignored.)

i2c: Make remove callback return void

The value returned by an i2c driver's remove function is mostly ignored.
(Only an error message is printed if the value is non-zero that the
error is ignored.)

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour, all callbacks were prepared to
return 0 before.

Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com>
Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/*
Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5
Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio
Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860
Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b
Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes
Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power
Acked-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

show more ...

Merge tag 'v5.18'

Linux 5.18

Merge tag 'v5.17-rc4' into for-linus

Merge with mainline to get the Intel ASoC generic helpers header and
other changes.

Merge tag 'v5.16' into next

Sync up with mainline to bring in the latest API changes.

Merge branch 'for-next' into for-linus

Pull 5.17 materials.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

Merge drm/drm-next into drm-misc-next-fixes

Backmerging to bring drm-misc-next-fixes up to the latest state for
the current release cycle.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge branch 'reset/of-get-optional-exclusive' of git://git.pengutronix.de/pza/linux into timers/drivers/next

"Add optional variant of of_reset_control_get_exclusive(). If the
requested reset is not

Merge branch 'reset/of-get-optional-exclusive' of git://git.pengutronix.de/pza/linux into timers/drivers/next

"Add optional variant of of_reset_control_get_exclusive(). If the
requested reset is not specified in the device tree, this function
returns NULL instead of an error."

This dependency is needed for the Generic Timer Module (a.k.a OSTM)
support for RZ/G2L.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

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Merge drm/drm-next into drm-intel-next

Sync up with drm-next to get v5.16-rc2.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge drm/drm-next into drm-intel-gt-next

Thomas needs the dma_resv_for_each_fence API for i915/ttm async migration
work.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Merge drm/drm-next into drm-misc-next

Backmerging from drm/drm-next for v5.16-rc1.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-fixes into drm-misc-fixes

We need -rc1 to address a breakage in drm/scheduler affecting panfrost.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge remote-tracking branch 'torvalds/master' into perf/core

To pick up some tools/perf/ patches that went via tip/perf/core, such
as:

tools/perf: Add mem_hops field in perf_mem_data_src structu

Merge remote-tracking branch 'torvalds/master' into perf/core

To pick up some tools/perf/ patches that went via tip/perf/core, such
as:

tools/perf: Add mem_hops field in perf_mem_data_src structure

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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Merge tag 'hwmon-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
"New driver:

- Maxim MAX6620

Notable functional enhan

Merge tag 'hwmon-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
"New driver:

- Maxim MAX6620

Notable functional enhancements:

- Add Asus WMI support to nct6775 driver, and list boards supporting
it

- Move TMP461 support from tm401 driver to lm90 driver

- Add support for fanX_min, fanX_max and fanX_target to dell-smm
driver, and clean it up while doing so

- Extend mlxreg-fan driver to support multiple cooling devices and
multiple PWM channels. Also increase number of supported fan
tachometers.

- Add a new customer ID (for ASRock) to nct6683 driver

- Make temperature/voltage sensors on nct7802 configurable

- Add mfg_id debugfs entry to pmbus/ibm-cffps driver

- Support configurable sense resistor values in pmbus/lm25066, and
fix various coefficients

- Use generic notification mechanism in raspberrypi driver

Notable cleanups:

- Convert various devicetree bindings to dtschema, and add missing
bindings

- Convert i5500_temp and tmp103 drivers to
devm_hwmon_device_register_with_info

- Clean up non-bool "valid" data fields

- Improve devicetree configurability for tmp421 driver"

* tag 'hwmon-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (73 commits)
hwmon: (nct7802) Add of_node_put() before return
hwmon: (tmp401) Drop support for TMP461
hwmon: (lm90) Add basic support for TI TMP461
hwmon: (lm90) Introduce flag indicating extended temperature support
hwmon: (nct6775) add ProArt X570-CREATOR WIFI.
hwmon: (nct7802) Make temperature/voltage sensors configurable
dt-bindings: hwmon: Add nct7802 bindings
hwmon: (dell-smm) Speed up setting of fan speed
hwmon: (dell-smm) Add comment explaining usage of i8k_config_data[]
hwmon: (dell-smm) Return -ENOIOCTLCMD instead of -EINVAL
hwmon: (dell-smm) Use strscpy_pad()
hwmon: (dell-smm) Sort includes in alphabetical order
hwmon: (tmp421) Add of_node_put() before return
hwmon: (max31722) Warn about failure to put device in stand-by in .remove()
hwmon: (acpi_power_meter) Use acpi_bus_get_acpi_device()
hwmon: (dell-smm) Add support for fanX_min, fanX_max and fanX_target
dt-bindings: hwmon: allow specifying channels for tmp421
hwmon: (tmp421) ignore non-channel related DT nodes
hwmon: (tmp421) update documentation
hwmon: (tmp421) support HWMON_T_ENABLE
...

show more ...

hwmon: cleanup non-bool "valid" data fields

We have bool so use it consistently in all the drivers.

The following Coccinelle script was used:

@@
identifier T;
type t = { char, int };
@@
struct T {

hwmon: cleanup non-bool "valid" data fields

We have bool so use it consistently in all the drivers.

The following Coccinelle script was used:

@@
identifier T;
type t = { char, int };
@@
struct T {
...
- t valid;
+ bool valid;
...
}

@@
identifier v;
@@
(
- v->valid = 0
+ v->valid = false
|
- v->valid = 1
+ v->valid = true
)

followed by sed to fixup the comments:
sed '/bool valid;/{s/!=0/true/;s/zero/false/}'

Few whitespace changes were fixed manually. All modified drivers were
compile-tested.

Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Link: https://lore.kernel.org/r/20210924195202.27917-1-fercerpav@gmail.com
[groeck: Fixed up 'u8 valid' to 'boool valid' in atxp1.c]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

show more ...

Merge branch 'next' into for-linus

Prepare input updates for 5.12 merge window.

Merge tag 'v5.11' into next

Merge with mainline to get latest APIs and device tree bindings.

Merge remote-tracking branch 'spi/for-5.10' into spi-linus

Merge remote-tracking branch 'asoc/for-5.10' into asoc-linus

Merge branches 'for-next/kvm-build-fix', 'for-next/va-refactor', 'for-next/lto', 'for-next/mem-hotplug', 'for-next/cppc-ffh', 'for-next/pad-image-header', 'for-next/zone-dma-default-32-bit', 'for-nex

Merge branches 'for-next/kvm-build-fix', 'for-next/va-refactor', 'for-next/lto', 'for-next/mem-hotplug', 'for-next/cppc-ffh', 'for-next/pad-image-header', 'for-next/zone-dma-default-32-bit', 'for-next/signal-tag-bits' and 'for-next/cmdline-extended' into for-next/core

* for-next/kvm-build-fix:
: Fix KVM build issues with 64K pages
KVM: arm64: Fix build error in user_mem_abort()

* for-next/va-refactor:
: VA layout changes
arm64: mm: don't assume struct page is always 64 bytes
Documentation/arm64: fix RST layout of memory.rst
arm64: mm: tidy up top of kernel VA space
arm64: mm: make vmemmap region a projection of the linear region
arm64: mm: extend linear region for 52-bit VA configurations

* for-next/lto:
: Upgrade READ_ONCE() to RCpc acquire on arm64 with LTO
arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y
arm64: alternatives: Remove READ_ONCE() usage during patch operation
arm64: cpufeatures: Add capability for LDAPR instruction
arm64: alternatives: Split up alternative.h
arm64: uaccess: move uao_* alternatives to asm-uaccess.h

* for-next/mem-hotplug:
: Memory hotplug improvements
arm64/mm/hotplug: Ensure early memory sections are all online
arm64/mm/hotplug: Enable MEM_OFFLINE event handling
arm64/mm/hotplug: Register boot memory hot remove notifier earlier
arm64: mm: account for hotplug memory when randomizing the linear region

* for-next/cppc-ffh:
: Add CPPC FFH support using arm64 AMU counters
arm64: abort counter_read_on_cpu() when irqs_disabled()
arm64: implement CPPC FFH support using AMUs
arm64: split counter validation function
arm64: wrap and generalise counter read functions

* for-next/pad-image-header:
: Pad Image header to 64KB and unmap it
arm64: head: tidy up the Image header definition
arm64/head: avoid symbol names pointing into first 64 KB of kernel image
arm64: omit [_text, _stext) from permanent kernel mapping

* for-next/zone-dma-default-32-bit:
: Default to 32-bit wide ZONE_DMA (previously reduced to 1GB for RPi4)
of: unittest: Fix build on architectures without CONFIG_OF_ADDRESS
mm: Remove examples from enum zone_type comment
arm64: mm: Set ZONE_DMA size based on early IORT scan
arm64: mm: Set ZONE_DMA size based on devicetree's dma-ranges
of: unittest: Add test for of_dma_get_max_cpu_address()
of/address: Introduce of_dma_get_max_cpu_address()
arm64: mm: Move zone_dma_bits initialization into zone_sizes_init()
arm64: mm: Move reserve_crashkernel() into mem_init()
arm64: Force NO_BLOCK_MAPPINGS if crashkernel reservation is required
arm64: Ignore any DMA offsets in the max_zone_phys() calculation

* for-next/signal-tag-bits:
: Expose the FAR_EL1 tag bits in siginfo
arm64: expose FAR_EL1 tag bits in siginfo
signal: define the SA_EXPOSE_TAGBITS bit in sa_flags
signal: define the SA_UNSUPPORTED bit in sa_flags
arch: provide better documentation for the arch-specific SA_* flags
signal: clear non-uapi flag bits when passing/returning sa_flags
arch: move SA_* definitions to generic headers
parisc: start using signal-defs.h
parisc: Drop parisc special case for __sighandler_t

* for-next/cmdline-extended:
: Add support for CONFIG_CMDLINE_EXTENDED
arm64: Extend the kernel command line from the bootloader
arm64: kaslr: Refactor early init command line parsing

show more ...

Merge remote-tracking branch 'origin/master' into perf/core

Further perf/core patches will depend on:

d3f7b1bb2040 ("mm/gup: fix gup_fast with dynamic page table folding")

which is already in Li

Merge remote-tracking branch 'origin/master' into perf/core

Further perf/core patches will depend on:

d3f7b1bb2040 ("mm/gup: fix gup_fast with dynamic page table folding")

which is already in Linus' tree.

show more ...

Merge tag 'v5.10-rc1' into kvmarm-master/next

Linux 5.10-rc1

Signed-off-by: Marc Zyngier <maz@kernel.org>

Merge branch 'linus' into perf/kprobes

Conflicts:
include/asm-generic/atomic-instrumented.h
kernel/kprobes.c

Use the upstream atomic-instrumented.h checksum, and pick
the kprobes version of kerne

Merge branch 'linus' into perf/kprobes

Conflicts:
include/asm-generic/atomic-instrumented.h
kernel/kprobes.c

Use the upstream atomic-instrumented.h checksum, and pick
the kprobes version of kernel/kprobes.c, which effectively
reverts this upstream workaround:

645f224e7ba2: ("kprobes: Tell lockdep about kprobe nesting")

Since the new code *should* be fine without nesting.

Knock on wood ...

Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Merge drm/drm-next into drm-intel-next-queued

Catch up with v5.10-rc2 and drm-misc-next.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge branch 'core/urgent' into core/entry

Pick up the entry fix before further modifications.

Merge drm/drm-next into drm-misc-next

Daniel needs -rc2 in drm-misc-next to merge some patches

Signed-off-by: Maxime Ripard <maxime@cerno.tech>