The hardcoded maximum of 512 cores per package was first defined by commit
34cf8c657c ("hwmon: (coretemp) Enlarge per package core count limit")
and later kept as a fallback with a TODO in commit 1a793caf6f ("hwmon:
(coretemp) Use dynamic allocated memory for core temp_data") because the
actual per-package core count was not reliably available at the time.
Now that topology_num_cores_per_package() is stable and suitable for use,
it's time to complete the TODO and allocate only the needed amount of
memory for core_data.
Signed-off-by: Roman Bakshansky <bakshansky.lists@gmail.com>
Link: https://lore.kernel.org/r/20260516114253.5466-2-bakshansky.lists@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The adt7411 driver exposes additional standard hwmon attributes beyond
the ones currently listed in Documentation/hwmon/adt7411.rst.
Document voltage min/max/alarm attributes, temperature min/max and
min_alarm/max_alarm attributes, and the temp2_fault attribute for the
external temperature channel.
Also update the documentation to clarify that analog inputs in1 and in2
are not available when the external temperature sensor is enabled, and
remove the outdated statement claiming that external temperature support
and limit registers are unsupported.
Signed-off-by: Chen-Shi-Hong <eric039eric@gmail.com>
Link: https://lore.kernel.org/r/20260516035245.1604-1-eric039eric@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The ADM1266 reports its firmware revision via the IC_DEVICE_REV
manufacturer-specific block-read command (0xAE, datasheet Rev. D
Table 80). The first three returned bytes are the firmware
major.minor.patch fields. This is useful when correlating field
behaviour against ADI release notes; expose it through debugfs
alongside the existing sequencer_state entry.
The standard PMBus MFR_REVISION (0x9B) register is already exposed
by pmbus_core's debugfs auto-create path and reports the
manufacturer revision, which is a separate thing from the firmware
running on the device.
Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Link: https://lore.kernel.org/r/20260512-adm1266-v3-1-a81a479b0bb0@nexthop.ai
[groeck: Squashed patch adding serialization with pmbus_lock]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The nct7802 chip exposes two registers that allow setting the time
interval between successive duty increases or decreases in Smart Fan
mode. The units are intervals of 0.1 second. The default value at power
on is 10, so 1 second.
Add sysfs attributes for step_up_time and step_down_time to allow
controlling the responsiveness of the fan speed. Values are represented
as milliseconds to the user. When set, the value is clamped to the valid
range of 100 to 25500 (0.1 to 25.5 seconds), and rounded to the nearest
multiple of 100.
Signed-off-by: Ronan Dalton <ronan.dalton@alliedtelesis.co.nz>
Cc: linux-kernel@vger.kernel.org
Cc: linux-hwmon@vger.kernel.org
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Link: https://lore.kernel.org/r/20260514003404.1548747-2-ronan.dalton@alliedtelesis.co.nz
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
While being less compact, using named initializers allows to more easily
see which members of the structs are assigned which value without having
to lookup the declaration of the struct. And it's also more robust
against changes to the struct definition.
The mentioned robustness is relevant for a planned change to struct
i2c_device_id that replaces .driver_data by an anonymous union.
While touching all these arrays, unify indention and usage of commas.
This patch doesn't modify the compiled arrays, only their representation
in source form benefits. The former was confirmed with x86 and arm64
builds.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/65b77bcd452752c36d866069cc5790b26d2bf8dc.1778688803.git.u.kleine-koenig@baylibre.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The four drivers all don't make use of the value that was explicitly
assigned to the .driver_data member. Drop the assignment.
While touching these lines also make the assignments use named
initializers and drop a comma after the end-of-list marker.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # For
Link: https://lore.kernel.org/r/e8ceb3931975813545a8b478cc1a71b4ede9a6c0.1778688803.git.u.kleine-koenig@baylibre.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The driver doesn't make use of the i2c .driver_data and the of .data. So
drop the useless and irritating assignments.
While touching all these lines, use named initializers for the i2c
device ids and convert to the most common usage of spacing in such
arrays.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/dcfcc82a93da77b55503998c5c7acf2a80c4a615.1778603083.git.ukleinek@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Replace of_property_read_string() with the preferded
device_property_read_string() in the probe function to
read the device label property, improving the driver
compatibility since this method is not limited to
Device Tree only.
Also drop the now unnecessary __maybe_unused from tmp102_of_match.
Signed-off-by: Flaviu Nistor <flaviu.nistor@gmail.com>
Link: https://lore.kernel.org/r/20260510092543.12352-1-flaviu.nistor@gmail.com
Link: https://lore.kernel.org/r/20260518122210.10288-1-flaviu.nistor@gmail.com
[groeck: Combined API change with __maybe_unused patch]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add hwmon driver for the ARCTIC Fan Controller, a USB HID device
(VID 0x3904, PID 0xF001) with 10 fan channels. Exposes fan speed in
RPM (read-only) and PWM duty cycle (0-255, read/write) via sysfs.
The device pushes IN reports at ~1 Hz containing RPM readings. PWM is
set via OUT reports; the device applies the new duty cycle and sends
back a 2-byte ACK (Report ID 0x02). The driver waits up to 1 s for
the ACK using a completion. Measured device latency: max ~563 ms over
500 iterations. PWM control is manual-only: the device never changes
duty cycle autonomously.
raw_event() may run in hardirq context, so fan_rpm[] is protected by
a spinlock with irq-save. pwm_duty[] is also protected by this spinlock
because reset_resume() clears it outside the hwmon core lock. The OUT
report buffer is built and write_pending is armed under the same lock so
that no reset_resume() can race with the pwm_duty[] snapshot. priv->buf
is exclusively accessed by write(), which the hwmon core serializes.
Signed-off-by: Aureo Serrano de Souza <aureo.serrano@arctic.de>
Link: https://lore.kernel.org/r/20260508064405.38676-1-aureo.serrano@arctic.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Document the hardware monitoring support for the Delta E50SN12051
device.
The documentation describes the supported sensors exposed via the
hwmon subsystem, including voltage, current, and temperature measurements.
Signed-off-by: Colin Huang <u8813345@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20260508-add-e50sn12051-v5-2-abebdcc29665@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add support for MAX20830 step-down DC-DC switching regulator with
PMBus interface. It allows monitoring of input/output voltage,
output current and temperature through the PMBus serial interface.
Signed-off-by: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
Link: https://lore.kernel.org/r/20260505-dev_max20830-v4-2-4343dcbfd7d7@analog.com
[groeck: checkpatch cleanup (space before and after '-')]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
LM75 devices supported by this driver support configurable active-high
alert polarity. This is already documented in the devicetree description.
Add support for it to the driver.
Follow documentation and defensively enforce active-low if property is
not set. This avoids possible inconsistencies for future devices with
wrong parametrization. No API breakage as all current devices have
their parameters set to active-low.
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://lore.kernel.org/r/20260504151020.462342-3-markus.stockhausen@gmx.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The LM75 alert pin is asserted based on the value of alert polarity bit
of the configuration register. The device/driver default is 0 which means
alert pin is configured to be active-low. A value of 1 maps to inverted
(active-high).
Add an optional boolean property "ti,alert-polarity-active-high" to
override the alert pin polarity. When absent, the default active-low
polarity is kept.
Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20260504151020.462342-2-markus.stockhausen@gmx.de
[groeck: Shorten description line length]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Convert the ZyXEL NSA320 MCU bindings from text format to YAML schema.
Signed-off-by: Manish Baing <manishbaing2789@gmail.com>
Acked-by: Adam Baker <linux@baker-net.org.uk>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260501102116.8275-1-manishbaing2789@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
By convention MODULE_DEVICE_TABLE() immediately follows the ID table it
exports, because this is easier to read and verify. It also makes more
sense since #ifdef for ACPI or OF could hide both of them.
Most of the privers already have this correctly placed, so adjust
the missing ones. No functional impact.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Acked-by: Thomas Weißschuh <linux@weissschuh.net> # cros_ec_hwmon.c
Link: https://lore.kernel.org/r/20260505102923.189289-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The driver currently passes a stack-allocated buffer to spi_write(),
which is incompatible with DMA on systems with CONFIG_VMAP_STACK
enabled.
Move the transfer buffer into the driver's private data structure
to ensure it is DMA-safe. Since this shared buffer now requires
serialization, this change depends on the previous commit which
migrated the driver to the hwmon 'with_info' API.
While moving the logic, also:
- Corrected the sign extension for 14-bit data by casting to s16.
- Scaled the output to millivolts (2500mV full scale
) to comply with the hwmon ABI.
Signed-off-by: Tabrez Ahmed <tabreztalks@gmail.com>
Link: https://lore.kernel.org/r/20260502020844.110038-4-tabreztalks@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Convert the ads7871 driver from the legacy hwmon_device_register() to the
modern hwmon_device_register_with_info() API. This migration simplifies
the driver by using the structured hwmon_channel_info approach and
prepares the codebase for the transition to a shared DMA-safe buffer.
While at it, fix checkpatch violations.
Signed-off-by: Tabrez Ahmed <tabreztalks@gmail.com>
Link: https://lore.kernel.org/r/20260502020844.110038-3-tabreztalks@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Some systems require fans to enter in a defined safe state during system
shutdown or reboot handoff.
Add support for the optional Device Tree property "fan-shutdown-percent"
to configure the shutdown PWM duty cycle per fan output.
If the property is present for a fan channel, the driver converts the
configured percentage value to the corresponding PWM duty cycle and
applies it during driver shutdown.
If the property is not present, the fan state remains unchanged.
Signed-off-by: Florin Leotescu <florin.leotescu@nxp.com>
Link: https://lore.kernel.org/r/20260429065955.2113012-4-florin.leotescu@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The EMC2305 fan controller supports multiple independent PWM fan
outputs. Some systems require fans to enter a defined safe state
during system shutdown or reboot handoff, until firmware or the next
boot stage reconfigures the controller.
Add an optional "fan-shutdown-percent" property to fan child nodes
allowing the PWM duty cycle applied during shutdown to be configured
per fan output.
Signed-off-by: Florin Leotescu <florin.leotescu@nxp.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20260429065955.2113012-3-florin.leotescu@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The fan channel index is used to access per-channel data structures.
Validate the index against the number of available channels
before use to prevent out-of-bounds access if an invalid
value is provided.
The thermal registration path currently uses a sequential child index,
which may not match the validated channel from DT. Use the DT "reg"
property when registering cooling devices to ensure consistent
channel handling
Signed-off-by: Florin Leotescu <florin.leotescu@nxp.com>
Link: https://lore.kernel.org/r/20260429065955.2113012-2-florin.leotescu@oss.nxp.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add device tree bindings for the Luxshare LX1308, a high-efficiency
12V 860W DC/DC power module with PMBus interface.
Signed-off-by: Brian Chiang <chiang.brian@inventec.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260428-add-support-lx1308-v2-1-90f115954143@inventec.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The Cadence LGA (Legacy Architecture IP) PCIe host controller currently
lacks the mandatory 100 ms delay after link training completes for speeds
> 5.0 GT/s, as required by PCIe r6.0 sec 6.6.1.
Add a 'max_link_speed' field to struct cdns_pcie. In the common host
layer function cdns_pcie_host_start_link(), after the link has been
successfully established, call pci_host_common_link_train_delay() to
insert the required delay.
For the j721e glue driver, set cdns_pcie.max_link_speed from the existing
link speed logic. For other LGA-based glue drivers (sky1, sg2042), the
common LGA host setup (pcie-cadence-host.c) provides a fallback reading
of the device tree property "max-link-speed" when available. This ensures
that the delay is not missed on those platforms once they enable the
property.
Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260518004246.1384532-3-18255117159@163.com
PCIe r6.0, sec 6.6.1 (Conventional Reset) requires that for a Downstream
Port supporting Link speeds greater than 5.0 GT/s, software must wait a
minimum of 100 ms after Link training completes before sending any
Configuration Request.
Introduce a static inline helper pci_host_common_link_train_delay() that
checks the given max_link_speed (2 = 5.0 GT/s, 3 = 8.0 GT/s, etc.) and
calls msleep(100) only when the speed is greater than 5.0 GT/s.
This allows multiple host controller drivers to share the same mandatory
delay without duplicating the logic.
Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260518004246.1384532-2-18255117159@163.com
Several significant bug fixes of pre-existing issues:
- Missing validation on ucap fd types passed from userspace
- Missing validation of HW DMA space vs userpace expected sizes in EFA
queue setup
- DMA corruption when using DMA block sizes >= 4G when setting up MRs in
all drivers
- Missing validation of CPU IDs when setting up dma handles
- Missing validation of IB_MR_REREG_ACCESS when changing writability of a
MR
- Missing validation of received message/packet size in ISER and SRP
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Several significant bug fixes of pre-existing issues:
- Missing validation on ucap fd types passed from userspace
- Missing validation of HW DMA space vs userpace expected sizes in
EFA queue setup
- DMA corruption when using DMA block sizes >= 4G when setting up MRs
in all drivers
- Missing validation of CPU IDs when setting up dma handles
- Missing validation of IB_MR_REREG_ACCESS when changing writability
of a MR
- Missing validation of received message/packet size in ISER and SRP"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/srp: bound SRP_RSP sense copy by the received length
IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN
RDMA: During rereg_mr ensure that REREG_ACCESS is compatible
RDMA/core: Validate cpu_id against nr_cpu_ids in DMAH alloc
RDMA/umem: Fix truncation for block sizes >= 4G
RDMA/efa: Validate SQ ring size against max LLQ size
RDMA/core: Validate the passed in fops for ib_get_ucaps()
Commit e1c5ae59c0 ("fs: don't allow non-init s_user_ns for filesystems
without FS_USERNS_MOUNT") prevents the mount of any filesystem inside a
container that doesn't have FS_USERNS_MOUNT set.
This broke NFS mounts in our containerized environment. We have a daemon
somewhat like systemd-mountfsd running in the init_ns. A process does a
fsopen() inside the container and passes it to the daemon via unix
socket.
The daemon then vets that the request is for an allowed NFS server and
performs the mount. This now fails because the fc->user_ns is set to the
value in the container and NFS doesn't set FS_USERNS_MOUNT. We don't
want to add FS_USERNS_MOUNT to NFS since that would allow the container
to mount any NFS server (even malicious ones).
Add a new FS_USERNS_DELEGATABLE flag, and enable it on NFS.
Fixes: e1c5ae59c0 ("fs: don't allow non-init s_user_ns for filesystems without FS_USERNS_MOUNT")
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260129-twmount-v1-1-4874ed2a15c4@kernel.org
Acked-by: Anna Schumaker <anna.schumaker@oracle.com>
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@futurfusion.io>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
This configuration option exists so "that we don't provide the symbol
when there's no possibility of there being a usable clocksource".
However it only covers __vdso_gettimeofday() and none of the other vDSO
functions which should be affected by the same circumstances.slightly slightly.
Remove MIPS_CLOCK_VSYSCALL and fold its usecase into
MIPS_GENERIC_GETTIMEOFDAY, which works correctly.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Daniel Lezcano <daniel.lezcano@kernel.org>
Cc: Thomas Gleixner <tglx@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@vger.kernel.org
Link: https://patch.msgid.link/20260521-vdso-mips-kconfig-v1-9-2f79dcd6c78f@linutronix.de
As explained in the comment, the problematic GOT references are only
emitted by old versions of GCC.
Limit the restriction to those compilers.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Link: https://patch.msgid.link/20260521-vdso-mips-kconfig-v1-8-2f79dcd6c78f@linutronix.de
The currently used MIPS_DISABLE_VDSO will disable only the userspace
bits of the time-related vDSO. The kernel part is still pointlessly
built and running.
Remove MIPS_DISABLE_VDSO and fold its usecase into
MIPS_GENERIC_GETTIMEOFDAY, which works correctly.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Daniel Lezcano <daniel.lezcano@kernel.org>
Cc: Thomas Gleixner <tglx@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-mips@vger.kernel.org
Link: https://patch.msgid.link/20260521-vdso-mips-kconfig-v1-7-2f79dcd6c78f@linutronix.de
VDSO_CLOCKMODE_GIC is only defined if CONFIG_GENERIC_GETTIMEOFDAY is
enabled. Right now this is always the case, but it will change soon.
Prepare for the potential unavailability of VDSO_CLOCKMODE_GIC.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Link: https://patch.msgid.link/20260521-vdso-mips-kconfig-v1-6-2f79dcd6c78f@linutronix.de
VDSO_CLOCKMODE_R4K is only defined if CONFIG_GENERIC_GETTIMEOFDAY is
enabled. Right now this is always the case, but it will change soon.
Prepare for the potential unavailability of VDSO_CLOCKMODE_R4K.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Link: https://patch.msgid.link/20260521-vdso-mips-kconfig-v1-5-2f79dcd6c78f@linutronix.de
SiFive ccache:
Add the Starfive JH7110 to the list of devices that need the
non-standard cache ops, because the GPU appears to be DMA non-coherent
unlike other peripherals.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Merge tag 'cache-for-v7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux into soc/drivers
standalone cache drivers for v7.2
SiFive ccache:
Add the Starfive JH7110 to the list of devices that need the
non-standard cache ops, because the GPU appears to be DMA non-coherent
unlike other peripherals.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* tag 'cache-for-v7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux:
cache: sifive_ccache: Add StarFive JH7110 SoC support
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
In tegra234_mc_icc_aggregate(), the 'if (mc)' check inside the
CPU-cluster branch is always true. 'mc' was already dereferenced
via 'mc->bwmgr_mrq_supported' a few lines above, so if it were NULL
the function would have faulted there. Drop the redundant check.
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20260527140127.49172-4-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
tegra264_mc_icc_aggregate() does nothing on top of icc_std_aggregate
except an early return on !mc->bwmgr_mrq_supported.
tegra264_mc_icc_set() already returns early on the same condition,
before reading any of the aggregated avg_bw / peak_bw values. This
makes the early return in aggregate() redundant. So, set
tegra264_mc_icc_ops.aggregate to icc_std_aggregate and drop the
helper.
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20260527140127.49172-3-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
tegra186_emc_interconnect_init() copies the MC's ICC aggregate hook
into the EMC provider. That hook (tegra234_mc_icc_aggregate /
tegra264_mc_icc_aggregate) uses container_of() to recover 'mc',
which is only valid when the icc_provider is embedded in struct
tegra_mc. For an EMC node the provider is embedded in struct
tegra186_emc, so 'mc' points into unrelated memory.
This stayed harmless until commit faafd6ca7e ("memory: tegra:
make icc_set_bw return zero if BWMGR not supported") added an
unconditional read of mc->bwmgr_mrq_supported at the top of the
hook. UBSAN catches the stray load on every EMC aggregation:
UBSAN: invalid-load in drivers/memory/tegra/tegra234.c:1104:9
load of value 112 is not a valid value for type '_Bool'
No functional impact in practice, since the hook's only other mc
dereference (mc->num_channels) sits inside a
TEGRA_ICC_MC_CPU_CLUSTER* branch that EMC nodes never enter.
Fix this by setting the EMC provider's aggregate hook to
icc_std_aggregate, instead of borrowing the MC's hook. The MC
providers continue using their own aggregate hooks, where
container_of() correctly resolves to struct tegra_mc.
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Fixes: 9a38cb2766 ("memory: tegra: Add interconnect support for DRAM scaling in Tegra234")
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20260527140127.49172-2-sumitg@nvidia.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
TI K3 TISCI:
- ti_sci: Add BOARDCFG_MANAGED mode for support system suspend/resume cycles
- ti_sci: Add support for restoring IRQ and clock contexts during resume.
- clk: keystone: sci-clk: Add clock restoration support.
SoC Drivers:
- k3-socinfo: Add support for identifying AM62P silicon variants via NVMEM,
along with corresponding dt-bindings update for nvmem-cells support
- k3-ringacc: Fix incorrect access mode for ring pop tail IO/proxy operations
Keystone Navigator (knav) Cleanup and Fixes:
- knav_qmss: Multiple code quality improvements
- knav_qmss_queue: Implement proper resource cleanup in the remove() path
General Cleanups:
- k3-ringacc: Use str_enabled_disabled() helper for consistency
- knav_qmss: Use %pe format specifier for PTR_ERR() printing
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Merge tag 'ti-driver-soc-for-v7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux into soc/drivers
TI SoC driver updates for v7.2
TI K3 TISCI:
- ti_sci: Add BOARDCFG_MANAGED mode for support system suspend/resume cycles
- ti_sci: Add support for restoring IRQ and clock contexts during resume.
- clk: keystone: sci-clk: Add clock restoration support.
SoC Drivers:
- k3-socinfo: Add support for identifying AM62P silicon variants via NVMEM,
along with corresponding dt-bindings update for nvmem-cells support
- k3-ringacc: Fix incorrect access mode for ring pop tail IO/proxy operations
Keystone Navigator (knav) Cleanup and Fixes:
- knav_qmss: Multiple code quality improvements
- knav_qmss_queue: Implement proper resource cleanup in the remove() path
General Cleanups:
- k3-ringacc: Use str_enabled_disabled() helper for consistency
- knav_qmss: Use %pe format specifier for PTR_ERR() printing
* tag 'ti-driver-soc-for-v7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux:
firmware: ti_sci: Add support for restoring clock context during resume
clk: keystone: sci-clk: Add restore_context() operation
firmware: ti_sci: Add support for restoring IRQs during resume
firmware: ti_sci: Add BOARDCFG_MANAGED mode support
soc: ti: k3-ringacc: Use str_enabled_disabled() helper
soc: ti: knav_dma: Use IOMEM_ERR_PTR() in pktdma_get_regs()
soc: ti: knav_dma: Remove dead check on unsigned args.args[0]
soc: ti: knav_dma: Remove unused DMA_PRIO_MASK macro
soc: ti: knav_qmss_acc: Fix kernel-doc Return: tag
soc: ti: knav_qmss: Fix __iomem annotations and __be32 type
soc: ti: knav_qmss: Use %pe to print PTR_ERR()
soc: ti: knav_qmss: Fix kernel-doc Return: tags
soc: ti: knav_qmss: Inline lockdep condition in for_each_handle_rcu
soc: ti: knav_qmss: Rename global kdev to knav_qdev to fix -Wshadow
soc: ti: knav_qmss: Remove remaining redundant ENOMEM printks
soc: ti: knav_qmss_queue: Implement resource cleanup in remove()
soc: ti: k3-ringacc: Fix access mode for k3_ringacc_ring_pop_tail_io/proxy
soc: ti: knav_dma: fix all kernel-doc warnings in knav_dma.h
soc: ti: k3-socinfo: Add support for AM62P variants via NVMEM
dt-bindings: hwinfo: ti,k3-socinfo: Add nvmem-cells support
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
pull the following:
- Justin changes the soc_device driver to be more modern and consolidate
the initialization
- Chen-Yu updates the BCM2835 firmware Kconfig dependency and adds
COMPILE_TEST
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Merge tag 'arm-soc/for-7.2/drivers' of https://github.com/Broadcom/stblinux into soc/drivers
This pull request contains Broadcom SoC drivers changes for 7.2, please
pull the following:
- Justin changes the soc_device driver to be more modern and consolidate
the initialization
- Chen-Yu updates the BCM2835 firmware Kconfig dependency and adds
COMPILE_TEST
* tag 'arm-soc/for-7.2/drivers' of https://github.com/Broadcom/stblinux:
firmware: raspberrypi: Change dependency to ARCH_BCM2835 and COMPILE_TEST
soc: brcmstb: consolidate initcall functions
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Improve Samsung Exynos (and Google GS101) ACPM (Alive Clock and Power
Manager) firmware driver:
1. Few code improvements.
2. Add support for protocol used to communicate with Thermal Management
Unit (TMU). This will allow to implement the thermal driver working
for newer Samsung Exynos and Google GS101 SoCs.
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Merge tag 'samsung-drivers-7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/drivers
Samsung SoC drivers for v7.2
Improve Samsung Exynos (and Google GS101) ACPM (Alive Clock and Power
Manager) firmware driver:
1. Few code improvements.
2. Add support for protocol used to communicate with Thermal Management
Unit (TMU). This will allow to implement the thermal driver working
for newer Samsung Exynos and Google GS101 SoCs.
* tag 'samsung-drivers-7.2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
firmware: samsung: acpm: remove compile-testing stubs
firmware: samsung: acpm: Add devm_acpm_get_by_phandle helper
firmware: samsung: acpm: Add TMU protocol support
firmware: samsung: acpm: Make acpm_ops const and access via pointer
firmware: samsung: acpm: Drop redundant _ops suffix in acpm_ops members
firmware: samsung: acpm: Annotate rx_data->cmd with __counted_by_ptr
firmware: samsung: acpm: Consolidate transfer initialization helper
firmware: samsung: acpm: Fix infinite loop on sequence number exhaustion
firmware: samsung: acpm: Fix missing LKMM barriers in sequence allocator
firmware: samsung: acpm: Fix false timeouts and Use-After-Free in polling
firmware: samsung: acpm: Fix mailbox channel leak on probe error
firmware: samsung: acpm: Fix cross-thread RX length corruption
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The MediaTek MT7925 WiFi device advertises FLR capability, but it does not
work correctly. This manifests in VFIO passthrough scenarios. Normal VM
operation works fine, including clean shutdown/reboot. However, when the VM
terminates uncleanly (crash, force-off), VFIO attempts to reset the device
before it can be assigned to another VM. Because FLR is broken, the reset
fails, preventing reuse.
This is similar to its predecessor MT7922 (see 81f64e925c ("PCI: Avoid
FLR for Mediatek MT7922 WiFi")), but with different symptoms. The MT7922
issue manifests as config read failures (returning ~0) after FLR. The
MT7925 shows different behavior: config reads work correctly after FLR, but
firmware communication fails.
First VM start with MT7925 works fine:
mt7925e 0000:08:00.0: ASIC revision: 79250000
mt7925e 0000:08:00.0: WM Firmware Version: ____000000, Build Time: 20260106153120
After force reset or VM crash, when VFIO attempts FLR to reset the device
for reassignment, firmware initialization fails:
mt7925e 0000:08:00.0: ASIC revision: 79250000
mt7925e 0000:08:00.0: Message 00000010 (seq 1) timeout
mt7925e 0000:08:00.0: Failed to get patch semaphore
[Repeats with increasing sequence numbers 2-10]
mt7925e 0000:08:00.0: hardware init failed
The driver cannot acquire the patch semaphore needed for firmware
initialization, indicating that FLR does not properly reset the firmware
state. The device remains in this broken state until physical power cycle.
Disable FLR for MT7925 so the PCI core falls back to other reset methods,
e.g., Secondary Bus Reset, which successfully resets the device and allows
reinitialization for VFIO passthrough reuse.
Signed-off-by: Jose Ignacio Tornos Martinez <jtornosm@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260522070646.203115-1-jtornosm@redhat.com
The length of the string is calculated in order to allocate the correct
sized memory block, use the same length to copy the string.
Signed-off-by: David Laight <david.laight.linux@gmail.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Message-ID: <20260606202633.5018-4-david.laight.linux@gmail.com>
This set of changes contains another attempt at resolving a Kconfig
dependency, propagates debugfs error codes and adds support for multiple
sockets to the BPMP driver.
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Merge tag 'tegra-for-7.2-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/drivers
firmware: tegra: Changes for v7.2-rc1
This set of changes contains another attempt at resolving a Kconfig
dependency, propagates debugfs error codes and adds support for multiple
sockets to the BPMP driver.
* tag 'tegra-for-7.2-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
firmware: tegra: bpmp: Add support for multi-socket platforms
firmware: tegra: bpmp: Propagate debugfs errors
firmware: tegra: Make TEGRA_IVC a hidden Kconfig symbol
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The bulk of these changes converts existing users to the modern variants
of the API that take a PMC instance as argument. This completes the
transition to multi-instance support, which then makes room for cleanups
and restricting the remaining legacy APIs to 32-bit platforms.
Some changes in this set also clean up powergate debugfs and restrict
the power-off handler to be installed only where appropriate. Lastly,
support for Tegra238 is added.
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Merge tag 'tegra-for-7.2-pmc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/drivers
soc/tegra: pmc: Changes for v7.2-rc1
The bulk of these changes converts existing users to the modern variants
of the API that take a PMC instance as argument. This completes the
transition to multi-instance support, which then makes room for cleanups
and restricting the remaining legacy APIs to 32-bit platforms.
Some changes in this set also clean up powergate debugfs and restrict
the power-off handler to be installed only where appropriate. Lastly,
support for Tegra238 is added.
* tag 'tegra-for-7.2-pmc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
soc/tegra: pmc: Add Tegra238 support
soc/tegra: pmc: Restrict power-off handler to Nexus 7
soc/tegra: pmc: Populate powergate debugfs only when needed
soc/tegra: pmc: Move legacy code behind CONFIG_ARM guard
soc/tegra: pmc: Remove unused legacy functions
soc/tegra: pmc: Create PMC context dynamically
usb: xhci: tegra: Explicitly specify PMC instance to use
PCI: tegra: Explicitly specify PMC instance to use
media: vde: Explicitly specify PMC instance to use
drm/tegra: Explicitly specify PMC instance to use
drm/nouveau: tegra: Explicitly specify PMC instance to use
ata: ahci_tegra: Explicitly specify PMC instance to use
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
