Interrupts are automatically enabled when requested, so we need to
initialize irq_en accordingly to avoid causing an unbalanced enable
warning.
Signed-off-by: Esben Haabendal <esben@geanix.com>
Link: https://lore.kernel.org/r/20250516-rtc-uie-irq-fixes-v2-4-3de8e530a39e@geanix.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Interrupts are automatically enabled when requested, so we need to
initialize alarm_enabled accordingly to avoid causing an unbalanced enable
warning.
Signed-off-by: Esben Haabendal <esben@geanix.com>
Link: https://lore.kernel.org/r/20250516-rtc-uie-irq-fixes-v2-3-3de8e530a39e@geanix.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Interrupts are automatically enabled when requested, so we need to
initialize irq_enabled accordingly to avoid causing an unbalanced enable
warning.
Fixes: c62d658e52 ("rtc: isl12022: Add alarm support")
Signed-off-by: Esben Haabendal <esben@geanix.com>
Link: https://lore.kernel.org/r/20250516-rtc-uie-irq-fixes-v2-2-3de8e530a39e@geanix.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
As described in the old comment dating back to
commit 6610e0893b ("RTC: Rework RTC code to use timerqueue for events")
from 2010, we have been living with a race window when setting alarm
with an expiry in the near future (i.e. next second).
With 1 second resolution, it can happen that the second ticks after the
check for the timer having expired, but before the alarm is actually set.
When this happen, no alarm IRQ is generated, at least not with some RTC
chips (isl12022 is an example of this).
With UIE RTC timer being implemented on top of alarm irq, being re-armed
every second, UIE will occasionally fail to work, as an alarm irq lost
due to this race will stop the re-arming loop.
For now, I have limited the additional expiry check to only be done for
alarms set to next seconds. I expect it should be good enough, although I
don't know if we can now for sure that systems with loads could end up
causing the same problems for alarms set 2 seconds or even longer in the
future.
I haven't been able to reproduce the problem with this check in place.
Cc: stable@vger.kernel.org
Signed-off-by: Esben Haabendal <esben@geanix.com>
Link: https://lore.kernel.org/r/20250516-rtc-uie-irq-fixes-v2-1-3de8e530a39e@geanix.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
When using interrupt pin (INT A) as watchdog output all other
interrupt sources need to be disabled to avoid additional
resets. Resulting INT_A_MASK1 value is 55 (0x37).
Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Link: https://lore.kernel.org/r/20250902182235.6825-1-bruno.thomsen@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
During kexec reboots, RTC alarms that are fired during the kernel
transition experience delayed execution. The new kernel would eventually
honor these alarms, but the interrupt handlers would only execute after
the driver probe is completed rather than at the intended alarm time.
This is because pending alarm interrupt status from the previous kernel
is not properly cleared during driver initialization, causing timing
discrepancies in alarm delivery.
To ensure precise alarm timing across kexec transitions, enhance the
probe function to:
1. Clear any pending alarm interrupt status from previous boot.
2. Detect existing valid alarms and preserve their state.
3. Re-enable alarm interrupts for future alarms.
Signed-off-by: Harini T <harini.t@amd.com>
Link: https://lore.kernel.org/r/20250730142110.2354507-1-harini.t@amd.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
It is common to include the I2C address of the device in the source
file.
Signed-off-by: Tóth János <gomba007@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Add support for the RTC found in the SpacemiT P1 PMIC. Initially
only setting and reading the time are supported.
The PMIC is implemented as a multi-function device. This RTC is
probed based on this driver being named in a MFD cell in the simple
MFD I2C driver.
Signed-off-by: Alex Elder <elder@riscstar.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20250825172057.163883-5-elder@riscstar.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Add read_alarm and set_alarm ops from the rtc framework.
The support of an alarm is handled by a kernel thread waiting in OP-TEE
for an asynchronous notification that comes in the interrupt
handler of the alarm interruption on OP-TEE secure world.
Once the notification arrives, the kernel thread previously suspended
is rescheduled (this is handled by the OP-TEE kernel driver) and comes
back with the alarm information to the kernel.
A second session is therefore needed to enable/disable/cancel a waiting
alarm event as the kernel thread stopped in OP-TEE takes a form of mutex
on the session and so no one can use this session in parallel.
Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-3-e0fdf8aae545@foss.st.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Fix a memory leak in case of driver removal.
Free the shared memory used for arguments exchanges between kernel and
OP-TEE RTC PTA.
Fixes: 81c2f059ab ("rtc: optee: add RTC driver for OP-TEE RTC PTA")
Signed-off-by: Clément Le Goffic <clement.legoffic@foss.st.com>
Link: https://lore.kernel.org/r/20250715-upstream-optee-rtc-v1-1-e0fdf8aae545@foss.st.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The vendor for the X1205 RTC is not Xircom, but Xicor which was acquired
by Intersil. Since the I2C subsystem drops the vendor prefix for driver
matching, the vendor prefix hasn't mattered.
Fixes: 6875404fdb ("rtc: x1205: Add DT probing support")
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250821215703.869628-2-robh@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The vendor for the Xircom X1205 RTC is not Xircom, but Xicor which was
acquired by Intersil.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250821215703.869628-1-robh@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
When using MMIO with regmap, fast_io is implied. No need to set it
again.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250813161517.4746-18-wsa+renesas@sang-engineering.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The "isil,isl12057" compatible is already supported by rtc-ds1307.yaml,
so remove the old text binding.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250807214414.4172910-1-robh@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
The EFI rtc driver is used by non-x86 architectures only, and exposes
the get/set wakeup time functionality provided by the underlying
platform. This is usually broken on most platforms, and not widely used
to begin with [if at all], so let's just remove it.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Feng Tang <feng.tang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20250714060843.4029171-6-ardb+git@google.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
PCF2127 can generate interrupt every full second or minute configured
from control and status register 1, bits MI (1) and SI (0).
On interrupt control register 2 bit MSF (7) is set and must be cleared
to continue normal operation.
While the driver never enables this interrupt on its own, users or
firmware may do so - e.g. as an easy way to test the interrupt.
Add preprocessor definition for MSF bit and include it in the irq
bitmask to ensure minute and second interrupts are cleared when fired.
This fixes an issue where the rtc enters a test mode and becomes
unresponsive after a second interrupt has fired and is not cleared in
time. In this state register writes to control registers have no
effect and the interrupt line is kept asserted [1]:
[1] userspace commands to put rtc into unresponsive state:
$ i2cget -f -y 2 0x51 0x00
0x04
$ i2cset -f -y 2 0x51 0x00 0x05 # set bit 0 SI
$ i2cget -f -y 2 0x51 0x00
0x84 # bit 8 EXT_TEST set
$ i2cset -f -y 2 0x51 0x00 0x05 # try overwrite control register
$ i2cget -f -y 2 0x51 0x00
0x84 # no change
Signed-off-by: Josua Mayer <josua@solid-run.com>
Reviewed-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Link: https://lore.kernel.org/r/20250825-rtc-irq-v1-1-0133319406a7@solid-run.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Samsung S3C24xx family of SoCs was removed the Linux kernel in the
commit 61b7f8920b ("ARM: s3c: remove all s3c24xx support"), in January
2023. There are no in-kernel users of remaining S3C24xx compatibles.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250830130024.142815-6-krzysztof.kozlowski@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Samsung S3C24xx family of SoCs was removed the Linux kernel in the
commit 61b7f8920b ("ARM: s3c: remove all s3c24xx support"), in January
2023. There are no in-kernel users of remaining S3C24xx compatibles.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250830130024.142815-5-krzysztof.kozlowski@linaro.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Original TXT binding doc have not limitition about quartz-load-femtofarads,
which only allow 7000 for nxp,pcf85063.
So remove it to fix below CHECK_DTBS warnings:
arch/arm/boot/dts/nxp/imx/imx6dl-skov-revc-lt2.dtb: rtc@51 (nxp,pcf85063): quartz-load-femtofarads:0: 7000 was expected
from schema $id: http://devicetree.org/schemas/rtc/nxp,pcf85063.yaml#
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250903191128.439164-1-Frank.Li@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Probe and display L3 Cache topology
Add ability to average an added counter
(useful for pre-integrated "counters", such as Watts)
Break the limit of 64 built-in counters.
Assorted bug fixes and minor feature tweaks
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Merge tag 'turbostat-2025.09.09' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat updates from Len Brown:
"tools/power turbostat: version 2025.09.09
- Probe and display L3 Cache topology
- Add ability to average an added counter (useful for pre-integrated
"counters", such as Watts)
- Break the limit of 64 built-in counters
- Assorted bug fixes and minor feature tweaks"
* tag 'turbostat-2025.09.09' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
tools/power turbostat: version 2025.09.09
tools/power turbostat: Handle non-root legacy-uncore sysfs permissions
tools/power turbostat: standardize PER_THREAD_PARAMS
tools/power turbostat: Fix DMR support
tools/power turbostat: add format "average" for external attributes
tools/power turbostat: delete GET_PKG()
tools/power turbostat: probe and display L3 cache topology
tools/power turbostat: Support more than 64 built-in-counters
tools/power turbostat.8: Document Totl%C0, Any%C0, GFX%C0, CPUGFX% columns
tools/power turbostat: Fix bogus SysWatt for forked program
tools/power turbostat: Handle cap_get_proc() ENOSYS
tools/power turbostat: Fix build with musl
tools/power turbostat: verify arguments to params --show and --hide
tools/power turbostat: regression fix: --show C1E%
- Remove yet another compile-test case for a driver which needs an
additional dependency
- Fix a lock inversion scenario in the IRQ unit test suite
- Remove an impossible flag situation in gic-v5
- Do not iounmap resources in gic-v5 which are managed by devm
- Make sure stale, left-over interrupts in mvebu-gicp are cleared on
driver init
- Fix a reference counting mishap in msi-lib
- Fix a dereference-before-null-ptr-check case in the riscv-imsic
irqchip driver
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Merge tag 'irq_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Fix a wrong ioremap size in mvebu-gicp
- Remove yet another compile-test case for a driver which needs an
additional dependency
- Fix a lock inversion scenario in the IRQ unit test suite
- Remove an impossible flag situation in gic-v5
- Do not iounmap resources in gic-v5 which are managed by devm
- Make sure stale, left-over interrupts in mvebu-gicp are cleared on
driver init
- Fix a reference counting mishap in msi-lib
- Fix a dereference-before-null-ptr-check case in the riscv-imsic
irqchip driver
* tag 'irq_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/mvebu-gicp: Use resource_size() for ioremap()
irqchip: Build IMX_MU_MSI only on ARM
genirq/test: Resolve irq lock inversion warnings
irqchip/gic-v5: Remove IRQD_RESEND_WHEN_IN_PROGRESS for ITS IRQs
irqchip/gic-v5: iwb: Fix iounmap probe failure path
irqchip/mvebu-gicp: Clear pending interrupts on init
irqchip/msi-lib: Fix fwnode refcount in msi_lib_irq_domain_select()
irqchip/riscv-imsic: Don't dereference before NULL pointer check
- Add new Intel CPU models *and* a family: 0x12. Finally. Yippie! :-)
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Merge tag 'x86_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Fix an interrupt vector setup race which leads to a non-functioning
device
- Add new Intel CPU models *and* a family: 0x12. Finally. Yippie! :-)
* tag 'x86_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/irq: Plug vector setup race
x86/cpu: Add new Intel CPU model numbers for Wildcatlake and Novalake
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Merge tag 'locking_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Borislav Petkov:
- Prevent a futex hash leak due to different mm lifetimes
* tag 'locking_urgent_for_v6.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Move futex cleanup to __mmdrop()
Probe and display L3 Cache topology
Add ability to average an added counter
(useful for pre-integrated "counters", such as Watts)
Break the limit of 64 built-in counters.
Assorted bug fixes and minor feature tweaks
Signed-off-by: Len Brown <len.brown@intel.com>
/sys/devices/system/cpu/intel_uncore_frequency/package_X_die_Y/
may be readable by all, but
/sys/devices/system/cpu/intel_uncore_frequency/package_X_die_Y/current_freq_khz
may be readable only by root.
Non-root turbostat users see complaints in this scenario.
Fail probe of the interface if we can't read current_freq_khz.
Reported-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Original-patch-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Together with the RAPL MSRs, there are more MSRs gone on DMR, including
PLR (Perf Limit Reasons), and IRTL (Package cstate Interrupt Response
Time Limit) MSRs. The configurable TDP info should also be retrieved
from TPMI based Intel Speed Select Technology feature.
Remove the access of these MSRs for DMR. Improve the DMR platform
feature table to make it more readable at the same time.
Fixes: 83075bd59d ("tools/power turbostat: Add initial support for DMR")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
External atributes with format "raw" are not printed in summary lines
for nodes/packages (or with option -S). The new format "average"
behaves like "raw" but also adds the summary data
Signed-off-by: Michael Hebenstreit <michael.hebenstreit@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
We have out-grown the ability to use a 64-bit memory location
to inventory every possible built-in counter.
Leverage the the CPU_SET(3) macros to break this barrier.
Also, break the Joules & Watts counters into two,
since we can no longer 'or' them together...
Signed-off-by: Len Brown <len.brown@intel.com>
Here is a single revert of one of the previous patches that went in the
last tty/serial merge that is breaking userspace on some platforms
(specifically powerpc, probably a few others.) It accidentially changed
the ioctl values of some tty ioctls, which breaks xorg.
The revert has been in linux-next all this week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull TTY fix from Greg KH:
"Here is a single revert of one of the previous patches that went in
the last tty/serial merge that is breaking userspace on some platforms
(specifically powerpc, probably a few others.)
It accidentially changed the ioctl values of some tty ioctls, which
breaks xorg.
The revert has been in linux-next all this week with no reported
issues"
* tag 'tty-6.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "tty: vt: use _IO() to define ioctl numbers"
- Expose the OVMF firmware debug log via sysfs
- Lower the default log level for the EFI stub to avoid corrupting any
splash screens with unimportant diagnostic output
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Merge tag 'efi-next-for-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
- Expose the OVMF firmware debug log via sysfs
- Lower the default log level for the EFI stub to avoid corrupting any
splash screens with unimportant diagnostic output
* tag 'efi-next-for-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi: add API doc entry for ovmf_debug_log
efistub: Lower default log level
efi: add ovmf debug log driver
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Merge tag 'block-6.17-20250808' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
- MD pull request via Yu:
- mddev null-ptr-dereference fix, by Erkun
- md-cluster fail to remove the faulty disk regression fix, by
Heming
- minor cleanup, by Li Nan and Jinchao
- mdadm lifetime regression fix reported by syzkaller, by Yu Kuai
- MD pull request via Christoph
- add support for getting the FDP featuee in fabrics passthru path
(Nitesh Shetty)
- add capability to connect to an administrative controller
(Kamaljit Singh)
- fix a leak on sgl setup error (Keith Busch)
- initialize discovery subsys after debugfs is initialized
(Mohamed Khalfella)
- fix various comment typos (Bjorn Helgaas)
- remove unneeded semicolons (Jiapeng Chong)
- nvmet debugfs ordering issue fix
- Fix UAF in the tag_set in zloop
- Ensure sbitmap shallow depth covers entire set
- Reduce lock roundtrips in io context lookup
- Move scheduler tags alloc/free out of elevator and freeze lock, to
fix some lockdep found issues
- Improve robustness of queue limits checking
- Fix a regression with IO priorities, if no io context exists
* tag 'block-6.17-20250808' of git://git.kernel.dk/linux: (26 commits)
lib/sbitmap: make sbitmap_get_shallow() internal
lib/sbitmap: convert shallow_depth from one word to the whole sbitmap
nvmet: exit debugfs after discovery subsystem exits
block, bfq: Reorder struct bfq_iocq_bfqq_data
md: make rdev_addable usable for rcu mode
md/raid1: remove struct pool_info and related code
md/raid1: change r1conf->r1bio_pool to a pointer type
block: ensure discard_granularity is zero when discard is not supported
zloop: fix KASAN use-after-free of tag set
block: Fix default IO priority if there is no IO context
nvme: fix various comment typos
nvme-auth: remove unneeded semicolon
nvme-pci: fix leak on sgl setup error
nvmet: initialize discovery subsys after debugfs is initialized
nvme: add capability to connect to an administrative controller
nvmet: add support for FDP in fabrics passthru path
md: rename recovery_cp to resync_offset
md/md-cluster: handle REMOVE message earlier
md: fix create on open mddev lifetime regression
block: fix potential deadlock while running nr_hw_queue update
...
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Merge tag 'io_uring-6.17-20250808' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
- Allow vectorized payloads for send/send-zc - like sendmsg, but
without the hassle of a msghdr.
- Fix for an integer wrap that should go to stable, spotted by syzbot.
Nothing alarming here, as you need to be root to hit this.
Nevertheless, it should get fixed.
FWIW, kudos to the syzbot crew for having much nicer reproducers now,
and with nicely annotated source code as well. This is particularly
useful as syzbot uses the raw interface rather than liburing,
historically it's been difficult to turn a syzbot reproducer into a
meaningful test case. With the recent changes, not true anymore!
* tag 'io_uring-6.17-20250808' of git://git.kernel.dk/linux:
io_uring/memmap: cast nr_pages to size_t before shifting
io_uring/net: Allow to do vectorized send
There's one fix here for an issue with the CS42L43 where we were
allocating a single property for client devices as just that property
rather than a terminated array of properties like we are supposed to.
We also have an update to the MAINTAINERS file for some Renesas devices.
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Merge tag 'spi-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"There's one fix here for an issue with the CS42L43 where we were
allocating a single property for client devices as just that property
rather than a terminated array of properties like we are supposed to.
We also have an update to the MAINTAINERS file for some Renesas
devices"
* tag 'spi-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: cs42l43: Property entry should be a null-terminated array
MAINTAINERS: Add entries for the RZ/V2H(P) RSPI
This fixes an issue with the newly added code for handling large voltage
changes on regulators which require that individual voltage changes
cover a limited range, the check for convergence was broken.
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Merge tag 'regulator-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"This fixes an issue with the newly added code for handling large
voltage changes on regulators which require that individual voltage
changes cover a limited range, the check for convergence was broken"
* tag 'regulator-fix-v6.17-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: core: correct convergence check in regulator_set_voltage()
