Commit Graph
1399042 Commits
Author SHA1 Message Date
Alexandra Winter 269726968f dibs: Register ism as dibs device
Register ism devices with the dibs layer. Follow-on patches will move
functionality to the dibs layer.

As DIBS is only a shim layer without any dependencies, we can depend ISM
on DIBS without adding indirect dependencies. A follow-on patch will
remove implication of SMC by ISM.

Define struct dibs_dev. Follow-on patches will move more content into
dibs_dev.  The goal of follow-on patches is that ism_dev will only
contain fields that are special for this device driver. The same concept
will apply to other dibs device drivers.

Define dibs_dev_alloc(), dibs_dev_add() and dibs_dev_del() to be called
by dibs device drivers and call them from ism_drv.c
Use ism_dev.dibs for a pointer to dibs_dev.

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://patch.msgid.link/20250918110500.1731261-6-wintera@linux.ibm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-09-23 11:13:21 +02:00
Alexandra Winter d324a2ca3f dibs: Register smc as dibs_client
Formally register smc as dibs client. Functionality will be moved by
follow-on patches from ism_client to dibs_client until eventually
ism_client can be removed.
As DIBS is only a shim layer without any dependencies, we can depend SMC
on DIBS without adding indirect dependencies. A follow-on patch will
remove dependency of SMC on ISM.

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Julian Ruess <julianr@linux.ibm.com>
Link: https://patch.msgid.link/20250918110500.1731261-5-wintera@linux.ibm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-09-23 11:13:21 +02:00
Alexandra Winter 35758b0032 dibs: Create drivers/dibs
Create the file structure for a 'DIBS - Direct Internal Buffer Sharing'
shim layer that will provide generic functionality and declarations for
dibs device drivers and dibs clients.

Following patches will add functionality.

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://patch.msgid.link/20250918110500.1731261-4-wintera@linux.ibm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-09-23 11:13:21 +02:00
Alexandra Winter a4997e17d1 net/smc: Decouple sf and attached send_buf in smc_loopback
Before this patch there was the following assumption in
smc_loopback.c>smc_lo_move_data():
sf (signalling flag) == 0 : data is already in an attached target dmb
sf == 1 : data is not yet in the target dmb

This is true for the 2 callers in smc client
smcd_cdc_msg_send() : sf=1
smcd_tx_rdma_writes() : sf=0
but should not be a general assumption.

Add a bool to struct smc_buf_desc to indicate whether an SMC-D sndbuf_desc
is an attached buffer. Don't call move_data() for attached send_buffers,
because it is not necessary.

Move the data in smc_lo_move_data() if len != 0 and signal when requested.

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Mahanta Jambigi <mjambigi@linux.ibm.com>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Link: https://patch.msgid.link/20250918110500.1731261-3-wintera@linux.ibm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-09-23 11:13:21 +02:00
Alexandra Winter 884eee8e43 net/smc: Remove error handling of unregister_dmb()
smcd_buf_free() calls smc_ism_unregister_dmb(lgr->smcd, buf_desc) and
then unconditionally frees buf_desc.

Remove the cleaning up of fields of buf_desc in
smc_ism_unregister_dmb(), because it is not helpful.

This removes the only usage of ISM_ERROR from the smc module. So move it
to drivers/s390/net/ism.h.

Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Mahanta Jambigi <mjambigi@linux.ibm.com>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Link: https://patch.msgid.link/20250918110500.1731261-2-wintera@linux.ibm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-09-23 11:13:21 +02:00
Nickolay Goppen a15b5aefa8 platform/x86: dell-lis3lv02d: Add Latitude E6530
Add 0x29 as the accelerometer address for the Dell Latitude E6530 to
lis3lv02d_devices[].

The address was verified as below:

    $ cd /sys/bus/pci/drivers/i801_smbus/0000:00:1f.3
    $ ls -d i2c-*
    i2c-20
    $ sudo modprobe i2c-dev
    $ sudo i2cdetect 20
    WARNING! This program can confuse your I2C bus, cause data loss and worse!
    I will probe file /dev/i2c-20.
    I will probe address range 0x08-0x77.
    Continue? [Y/n] Y
         0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
    00:                         08 -- -- -- -- -- -- --
    10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
    20: -- -- -- -- -- -- -- -- -- UU -- 2b -- -- -- --
    30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
    40: -- -- -- -- 44 -- -- -- -- -- -- -- -- -- -- --
    50: UU -- 52 -- -- -- -- -- -- -- -- -- -- -- -- --
    60: -- 61 -- -- -- -- -- -- -- -- -- -- -- -- -- --
    70: -- -- -- -- -- -- -- --
    $ cat /proc/cmdline
    BOOT_IMAGE=/vmlinuz-linux-cachyos-bore root=UUID=<redacted> rw loglevel=3 quiet dell_lis3lv02d.probe_i2c_addr=1
    $ sudo dmesg
    [    0.000000] Linux version 6.16.6-2-cachyos-bore (linux-cachyos-bore@cachyos) (gcc (GCC) 15.2.1 20250813, GNU ld (GNU Binutils) 2.45.0) #1 SMP PREEMPT_DYNAMIC Thu, 11 Sep 2025 16:01:12 +0000
    […]
    [    0.000000] DMI: Dell Inc. Latitude E6530/07Y85M, BIOS A22 11/30/2018
    […]
    [    5.166442] i2c i2c-20: Probing for lis3lv02d on address 0x29
    [    5.167854] i2c i2c-20: Detected lis3lv02d on address 0x29, please report this upstream to platform-driver-x86@vger.kernel.org so that a quirk can be added

Signed-off-by: Nickolay Goppen <setotau@mainlining.org>
Reviewed-by: Hans de Goede <hansg@kernel.org>
Link: https://patch.msgid.link/20250917-dell-lis3lv02d-latitude-e6530-v1-1-8a6dec4e51e9@mainlining.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-09-23 12:11:23 +03:00
Paul E. McKenney 1d289fc569 Merge branch 'torture.2025.08.14a' into HEAD
Torture-test updates:
* rcutorture: Fix jitter.sh spin time
* torture: Add --do-normal parameter to torture.sh help text
* torture: Announce kernel boot status at torture-test startup
* rcutorture: Suppress "Writer stall state" reports during boot
* rcutorture: Delay rcutorture readers and writers until boot completes
* torture: Delay CPU-hotplug operations until boot completes
* rcutorture: Delay forward-progress testing until boot completes
* rcutorture,refscale: Use kcalloc() instead of kzalloc()
* refperf: Remove redundant kfree() after torture_stop_kthread()
* refperf: Set reader_tasks to NULL after kfree()
2025-09-23 02:10:51 -07:00
Paul E. McKenney a590b67d33 Merge branch 'srcu-next.2025.08.21a' into HEAD
SRCU updates:
* Create srcu_read_{,un}lock_fast_notrace()
* Add srcu_read_lock_fast_notrace() and srcu_read_unlock_fast_notrace()
* Add guards for notrace variants of SRCU-fast readers
* Document srcu_read_{,un}lock_fast() use of implicit RCU readers
* Document srcu_flip() memory-barrier D relation to SRCU-fast
* Remove preempt_disable/enable() in Tiny SRCU srcu_gp_start_if_needed()
2025-09-23 02:07:10 -07:00
Shyam Sundar S K 2c61c45af1 platform/x86/dell: Set USTT mode according to BIOS after reboot
After a reboot, if the user changes the thermal setting in the BIOS, the
BIOS applies this change. However, the current `dell-pc` driver does not
recognize the updated USTT value, resulting in inconsistent thermal
profiles between Windows and Linux.

To ensure alignment with Windows behavior, read the current USTT settings
during driver initialization and update the dell-pc USTT profile
accordingly whenever a change is detected.

Cc: Yijun Shen <Yijun.Shen@Dell.com>
Co-developed-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Reviewed-by: Lyndon Sanche <lsanche@lyndeno.ca>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Tested-By: Yijun Shen <Yijun.Shen@Dell.com>
Link: https://patch.msgid.link/20250916115142.188535-1-Shyam-sundar.S-k@amd.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-09-23 12:06:31 +03:00
Christoffer Sandberg 12a3dd4d2c platform/x86/amd/pmc: Add Stellaris Slim Gen6 AMD to spurious 8042 quirks list
Prevents instant wakeup ~1s after suspend

Signed-off-by: Christoffer Sandberg <cs@tuxedo.de>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Link: https://patch.msgid.link/20250916164700.32896-1-wse@tuxedocomputers.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-09-23 12:05:43 +03:00
Paul E. McKenney ccd0256e69 Merge branch 'rcu.2025.09.23a' into HEAD
RCU miscellaneous updates:
* Document that rcu_barrier() hurries lazy callbacks
* Remove local_irq_save/restore() in rcu_preempt_deferred_qs_handler()
* Move list_for_each_rcu() to where it belongs
* Replace use of system_wq with system_percpu_wq
* WQ_PERCPU added to alloc_workqueue users
* WQ_UNBOUND added to sync_wq workqueue
2025-09-23 02:02:43 -07:00
Marco Crivellari 82c427bc93 rcu: WQ_UNBOUND added to sync_wq workqueue
Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistentcy cannot be addressed without refactoring the API.

alloc_workqueue() treats all queues as per-CPU by default, while unbound
workqueues must opt-in via WQ_UNBOUND.

This default is suboptimal: most workloads benefit from unbound queues,
allowing the scheduler to place worker threads where they’re needed and
reducing noise when CPUs are isolated.

This change add the WQ_UNBOUND flag to sync_wq, to make explicit this
workqueue can be unbound and that it does not benefit from per-cpu work.

Once migration is complete, WQ_UNBOUND can be removed and unbound will
become the implicit default.

With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU.

Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-09-23 02:01:18 -07:00
Marco Crivellari 499d48f75b rcu: WQ_PERCPU added to alloc_workqueue users
Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistentcy cannot be addressed without refactoring the API.

alloc_workqueue() treats all queues as per-CPU by default, while unbound
workqueues must opt-in via WQ_UNBOUND.

This default is suboptimal: most workloads benefit from unbound queues,
allowing the scheduler to place worker threads where they’re needed and
reducing noise when CPUs are isolated.

This patch adds a new WQ_PERCPU flag to explicitly request the use of
the per-CPU behavior. Both flags coexist for one release cycle to allow
callers to transition their calls.

Once migration is complete, WQ_UNBOUND can be removed and unbound will
become the implicit default.

With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU.

All existing users have been updated accordingly.

Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-09-23 02:01:18 -07:00
Marco Crivellari 143ddfa169 rcu: replace use of system_wq with system_percpu_wq
Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.

This lack of consistentcy cannot be addressed without refactoring the API.

system_wq is a per-CPU worqueue, yet nothing in its name tells about that
CPU affinity constraint, which is very often not required by users. Make
it clear by adding a system_percpu_wq.

The old wq will be kept for a few release cylces.

Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2025-09-23 02:01:18 -07:00
Haren Myneni ef104054a3 powerpc/pseries: Define __u{8,32} types in papr_hvpipe_hdr struct
Fix the the following build errors with CONFIG_UAPI_HEADER_TEST:

./usr/include/asm/papr-hvpipe.h:16:9: error: unknown type name 'u8'
   16 |         u8 version;
./usr/include/asm/papr-hvpipe.h:17:9: error: unknown type name 'u8'
   17 |         u8 reserved[3];
./usr/include/asm/papr-hvpipe.h:18:9: error: unknown type name 'u32'
   18 |         u32 flags;
./usr/include/asm/papr-hvpipe.h:19:9: error: unknown type name 'u8'
   19 |         u8 reserved2[40];

Fixes: 043439ad1a ("powerpc/pseries: Define papr-hvpipe ioctl")
Reported-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250922091108.1483970-1-haren@linux.ibm.com
2025-09-23 14:30:48 +05:30
Nam Cao 91daac8a68 genirq/msi: Remove msi_post_free()
The only user of msi_post_free() - powerpc/pseries - has been changed to
use msi_teardown().

Remove this unused callback.

Signed-off-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250916061007.964005-1-namcao@linutronix.de
2025-09-23 14:29:51 +05:30
Mark Brown 2bfb20b65d spi: rpc-if: Add resume support for RZ/G3E
Merge series from Biju Das <biju.das.jz@bp.renesas.com>:

On RZ/G3E using PSCI, s2ram powers down the SoC. After resume,
reinitialize the hardware for SPI operations.

Also Replace the macro SIMPLE_DEV_PM_OPS->DEFINE_SIMPLE_DEV_PM_OPS macro
and use pm_sleep_ptr(). This lets us drop the check for CONFIG_PM_SLEEP
and __maybe_unused attribute from PM functions.
2025-09-23 10:57:52 +02:00
Mark Brown 089558a9ba Virtio SPI Linux driver
Merge series from Haixu Cui <quic_haixcui@quicinc.com>:

This is the 10th version of the virtio SPI Linux driver patch series which is
intended to be compliant with the upcoming virtio specification
version 1.4. The specification can be found in repository:
https://github.com/oasis-tcs/virtio-spec.git branch virtio-1.4.
2025-09-23 10:57:45 +02:00
Dmitry Baryshkov e609438851 regulator: dt-bindings: qcom,sdm845-refgen-regulator: document more platforms
Document refgen block being present on SDM670, Lemans and QCS8300
platforms. It should be used to provide reference voltage to DSI
controller.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250921-refgen-v1-1-9d93e64133ea@oss.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-09-23 10:56:54 +02:00
Dmitry Baryshkov 5fa7d739f8 regulator: dt-bindings: qcom,sdm845-refgen-regulator: document more platforms
Document refgen block being present on SDM670, Lemans and QCS8300
platforms. It should be used to provide reference voltage to DSI
controller.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250921-refgen-v1-1-9d93e64133ea@oss.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-09-23 10:56:48 +02:00
AngeloGioacchino Del Regno 99d19715da dt-bindings: timer: mediatek,timer: Add MediaTek MT8196 compatible
Add a new compatible for the MediaTek MT8196 SoC, fully compatible
with MT6765.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250611110800.458164-2-angelogioacchino.delregno@collabora.com
2025-09-23 10:56:29 +02:00
Chen Ni d27b4e33c9 clocksource/timer-econet-en751221: Convert comma to semicolon
Replace comma between expressions with semicolons.

Using a ',' in place of a ';' can have unintended side effects.
Although that is not the case here, it is seems best to use ';'
unless ',' is intended.

Found by inspection. No functional change intended.
Compile tested only.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Tested-by: Caleb James DeLisle <cjd@cjdns.fr>
Link: https://lore.kernel.org/r/20250603060450.1310204-1-nichen@iscas.ac.cn
2025-09-23 10:56:13 +02:00
Frank Li ffc5870fc4 dt-bindings: timer: Add fsl,timrot.yaml
Add fsl,timrot.yaml for i.MX23/i.MX28 timer.

Also add a generic fallback compatible string "fsl,timrot" for legacy
devices, which have existed for over 15 years.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250528165351.691848-1-Frank.Li@nxp.com
2025-09-23 10:56:05 +02:00
Arnd Bergmann 409f8fe03e clocksource/drivers/tegra186: Avoid 64-bit division
The newly added function causes a build failure on 32-bit targets with
older compiler version such as gcc-10:

arm-linux-gnueabi-ld: drivers/clocksource/timer-tegra186.o: in function `tegra186_wdt_get_timeleft':
timer-tegra186.c:(.text+0x3c2): undefined reference to `__aeabi_uldivmod'

The calculation can trivially be changed to avoid the division entirely,
as USEC_PER_SEC is a multiple of 5. Change both such calculation for
consistency, even though gcc apparently managed to optimize the other one
properly already.

[dlezcano : Fixed conflict with 20250614175556.922159-2-linux@roeck-us.net ]

Fixes: 28c842c8b0 ("clocksource/drivers/timer-tegra186: Add WDIOC_GETTIMELEFT support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20250620111939.3395525-1-arnd@kernel.org
2025-09-23 10:55:12 +02:00
Guenter Roeck 7f3abae5b4 clocksource/drivers/timer-tegra186: Simplify calculating timeleft
It is not necessary to use 64-bit operations to calculate the
remaining watchdog timeout. Simplify to use 32-bit operations,
and add comments explaining why there will be no overflow.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Cc: Pohsun Su <pohsuns@nvidia.com>
Cc: Robert Lin <robelin@nvidia.com>
Link: https://lore.kernel.org/r/20250614175556.922159-2-linux@roeck-us.net
2025-09-23 10:54:58 +02:00
Guenter Roeck 916aa36042 clocksource/drivers/timer-tegra186: Avoid 64-bit divide operation
Building the driver on xtensa fails with

tensa-linux-ld: drivers/clocksource/timer-tegra186.o:
	in function `tegra186_timer_remove':
timer-tegra186.c:(.text+0x350):
	undefined reference to `__udivdi3'

Avoid the problem by rearranging the offending code to avoid the 64-bit
divide operation.

Fixes: 28c842c8b0 ("clocksource/drivers/timer-tegra186: Add WDIOC_GETTIMELEFT support")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Cc: Pohsun Su <pohsuns@nvidia.com>
Cc: Robert Lin <robelin@nvidia.com>
Link: https://lore.kernel.org/r/20250614175556.922159-1-linux@roeck-us.net
2025-09-23 10:54:29 +02:00
Will McVicker be26ec8b14 of/irq: Export of_irq_count for modules
Need to export `of_irq_count` in preparation for modularizing the Exynos
MCT driver which uses this API for setting up the timer IRQs.

Signed-off-by: Will McVicker <willmcvicker@google.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Tested-by: Youngmin Nam <youngmin.nam@samsung.com>
Reviewed-by: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Reviewed-by: Youngmin Nam <youngmin.nam@samsung.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250620181719.1399856-2-willmcvicker@google.com
2025-09-23 10:53:53 +02:00
Frank Li c1ff9e919a dt-bindings: timer: fsl,ftm-timer: use items for reg
The original txt binding doc is:
  reg : Specifies base physical address and size of the register sets for
        the clock event device and clock source device.

And existed dts provide two reg MMIO spaces. So change to use items to
descript reg property.

Update examples.

Fixes: 8fc30d8f8e ("dt-bindings: timer: fsl,ftm-timer: Convert to dtschema")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250523141437.533643-1-Frank.Li@nxp.com
2025-09-23 10:53:37 +02:00
Max Shevchenko bb7bf8b44d dt-bindings: timer: mediatek: add MT6572
Add a compatible string for timer on the MT6572 SoC.

Signed-off-by: Max Shevchenko <wctrl@proton.me>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250702-mt6572-v4-3-bde75b7ed445@proton.me
2025-09-23 10:53:12 +02:00
Rob Herring (Arm) ef0e000cd1 dt-bindings: timer: Convert faraday,fttmr010 to DT schema
Convert the Faraday fttmr010 Timer binding to DT schema format. Adjust
the compatible string values to match what's in use. The number of
interrupts can also be anywhere from 1 to 8. The clock-names order was
reversed compared to what's used.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250611232621.1508116-1-robh@kernel.org
2025-09-23 10:52:51 +02:00
Daniel Lezcano 84b1a903ae time/sched_clock: Export symbol for sched_clock register function
The timer drivers could be converted into modules. The different
functions to register the clocksource or the clockevent are already
exporting their symbols for modules but the sched_clock_register()
function is missing.

Export the symbols so the drivers using this function can be converted
into modules.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Carlos Llamas <cmllamas@google.com>
Reviewed-by: Will McVicker <willmcvicker@google.com>
Acked-by: John Stultz <jstultz@google.com>
Link: https://lore.kernel.org/r/20250602151853.1942521-8-daniel.lezcano@linaro.org
2025-09-23 10:52:31 +02:00
Daniel Lezcano eea65574e2 clocksource/drivers/cs5535: Add module owner
The conversion to modules requires a correct handling of the module
refcount in order to prevent to unload it if it is in use. That is
especially true with the clockevents where there is no function to
unregister them.

The core time framework correctly handles the module refcount with the
different clocksource and clockevents if the module owner is set.

Add the module owner to make sure the core framework will prevent
stupid things happening when the driver will be converted into a
module.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Will McVicker <willmcvicker@google.com>
Link: https://lore.kernel.org/r/20250602151853.1942521-7-daniel.lezcano@linaro.org
2025-09-23 10:52:23 +02:00
Daniel Lezcano edef59887b clocksource/drivers/stm: Add module owner
The conversion to modules requires a correct handling of the module
refcount in order to prevent to unload it if it is in use. That is
especially true with the clockevents where there is no function to
unregister them.

The core time framework correctly handles the module refcount with the
different clocksource and clockevents if the module owner is set.

Add the module owner to make sure the core framework will prevent
stupid things happening when the driver will be converted into a
module.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Will McVicker <willmcvicker@google.com>
Link: https://lore.kernel.org/r/20250602151853.1942521-6-daniel.lezcano@linaro.org
2025-09-23 10:52:13 +02:00
Daniel Lezcano afe904f509 clocksource/drivers/tegra186: Add module owner
The conversion to modules requires a correct handling of the module
refcount in order to prevent to unload it if it is in use. That is
especially true with the clockevents where there is no function to
unregister them.

The core time framework correctly handles the module refcount with the
different clocksource and clockevents if the module owner is set.

Add the module owner to make sure the core framework will prevent
stupid things happening when the driver will be converted into a
module.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Will McVicker <willmcvicker@google.com>
Link: https://lore.kernel.org/r/20250602151853.1942521-5-daniel.lezcano@linaro.org
2025-09-23 10:52:04 +02:00
Daniel Lezcano 376d11d327 clocksource/drivers/sun5i: Add module owner
The conversion to modules requires a correct handling of the module
refcount in order to prevent to unload it if it is in use. That is
especially true with the clockevents where there is no function to
unregister them.

The core time framework correctly handles the module refcount with the
different clocksource and clockevents if the module owner is set.

Add the module owner to make sure the core framework will prevent
stupid things happening when the driver will be converted into a
module.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Will McVicker <willmcvicker@google.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20250602151853.1942521-4-daniel.lezcano@linaro.org
2025-09-23 10:51:44 +02:00
Daniel Lezcano 2cf51ab7f5 clocksource/drivers/stm32-lp: Add module owner
The conversion to modules requires a correct handling of the module
refcount in order to prevent to unload it if it is in use. That is
especially true with the clockevents where there is no function to
unregister them.

The core time framework correctly handles the module refcount with the
different clocksource and clockevents if the module owner is set.

Add the module owner to make sure the core framework will prevent
stupid things happening when the driver will be converted into a
module.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Will McVicker <willmcvicker@google.com>
Link: https://lore.kernel.org/r/20250602151853.1942521-3-daniel.lezcano@linaro.org
2025-09-23 10:51:21 +02:00
Mikulas Patocka 4b9197ed60 dm-integrity: introduce integrity_kmap and integrity_kunmap
This abstraction will be used later, for the asynchronous hash interface.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2025-09-23 10:49:45 +02:00
Mikulas Patocka d916106564 dm-integrity: replace bvec_kmap_local with kmap_local_page
Replace bvec_kmap_local with kmap_local_page - it will be needed for the
upcoming patches that make kmap_local_page optional, depending on whether
asynchronous hash interface is used or not.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2025-09-23 10:49:45 +02:00
Mikulas Patocka e4cc9deca3 dm-integrity: use internal variable for digestsize
Instead of calling digestsize() each time the digestsize for
the internal hash is needed, store the digestsize in a new
field internal_hash_digestsize within struct dm_integrity_c
once and use this value when needed.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2025-09-23 10:49:45 +02:00
Ivan Abramov 9ddf6d3fcb dm vdo: return error on corrupted metadata in start_restoring_volume functions
The return values of VDO_ASSERT calls that validate metadata are not acted
upon.

Return UDS_CORRUPT_DATA in case of an error.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: a4eb7e2555 ("dm vdo: implement the volume index")
Signed-off-by: Ivan Abramov <i.abramov@mt-integration.ru>
Reviewed-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2025-09-23 10:49:45 +02:00
Bruce Johnston e828a1875e dm vdo: Update code to use mem_is_zero
Remove function that would check if data was all zeroes. Use the
built-in kernel function mem_is_zero() instead.

Signed-off-by: Bruce Johnston <bjohnsto@redhat.com>
Signed-off-by: Matthew Sakai <msakai@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2025-09-23 10:49:17 +02:00
Ma Ke 4e65bda827 ASoC: wcd934x: fix error handling in wcd934x_codec_parse_data()
wcd934x_codec_parse_data() contains a device reference count leak in
of_slim_get_device() where device_find_child() increases the reference
count of the device but this reference is not properly decreased in
the success path. Add put_device() in wcd934x_codec_parse_data() and
add devm_add_action_or_reset() in the probe function, which ensures
that the reference count of the device is correctly managed.

Memory leak in regmap_init_slimbus() as the allocated regmap is not
released when the device is removed. Using devm_regmap_init_slimbus()
instead of regmap_init_slimbus() to ensure automatic regmap cleanup on
device removal.

Calling path: of_slim_get_device() -> of_find_slim_device() ->
device_find_child(). As comment of device_find_child() says, 'NOTE:
you will need to drop the reference with put_device() after use.'.

Found by code review.

Cc: stable@vger.kernel.org
Fixes: a61f3b4f47 ("ASoC: wcd934x: add support to wcd9340/wcd9341 codec")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://patch.msgid.link/20250923065212.26660-1-make24@iscas.ac.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
2025-09-23 10:39:31 +02:00
Mark Brown 7ea79f5366 spi: multi CS cleanup and controller CS limit
Merge series from Jonas Gorski <jonas.gorski@gmail.com>:

This series aims at cleaning up the current multi CS parts and removing
the CS limit per controller that was introduced with the multi CS
support.

To do this, store the assigned chip selects per device in
spi_device::num_chipselects, which allows us to use that instead of
SPI_CS_CNT_MAX for most loops, as well as remove the check for
SPI_INVALID_CS for any chip select.

This should hopefully make it obvious that SPI_CS_CNT_MAX only limits
accesses to arrays indexed by the number of chip selects of a device,
not the controller, and we can remove the check for
spi_controller::num_chipselects being less than SPI_CS_CNT_MAX in device
registration (which was the wrong place to do that anyway).

After having done that, we can reduce SPI_CS_CNT_MAX again to 4 without
breaking devices on higher CS lines.

Finally, rename SPI_CS_CNT_MAX to SPI_DEVICE_CNT_MAX to make it more
clear that this limit only applies to devices, not controllers.

There are still more issues left, but these can be addressed in future
submissions:

* The code allows multi-cs devices for any controller, as long as the
  device does not set parallel-memories.
* No current spi controller driver handles logical chip selects other
  than the first one, and always use it, regardless what cs_index_mask
  says.
* While most spi controllers should be able to handle devices that have
  multiple cs that just get enabled selectively, but not at the same
  time, there is no way to tell that to the core (ties into the above).
* There is no parallel memories/multi cs flag for devices, so any
  implementing driver needs to check the device tree node, making it
  impossible to register these kind of devices via platform code.
2025-09-23 10:29:10 +02:00
Mark Brown fd98145543 Support reading Subsystem ID from Device Tree
Merge series from Stefan Binding <sbinding@opensource.cirrus.com>:

In PC systems using ACPI, the driver is able to read back an SSID from
the _SUB property. This SSID uniquely identifies the system, which
enables the driver to read the correct firmware and tuning for that
system from linux-firmware. Currently there is no way of reading this
property from device tree. Add an equivalent property in device tree
to perform the same role.
2025-09-23 10:28:45 +02:00
Daniel Lezcano d6bfdeb4fd clocksource/drivers/scx200: Add module owner
The conversion to modules requires a correct handling of the module
refcount in order to prevent to unload it if it is in use. That is
especially true with the clockevents where there is no function to
unregister them.

The core time framework correctly handles the module refcount with the
different clocksource and clockevents if the module owner is set.

Add the module owner to make sure the core framework will prevent
stupid things happening when the driver will be converted into a
module.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Will McVicker <willmcvicker@google.com>
Link: https://lore.kernel.org/r/20250602151853.1942521-2-daniel.lezcano@linaro.org
2025-09-23 10:21:24 +02:00
Sebastian Reichel bee278e18e dt-bindings: embedded-controller: Add Lenovo Thinkpad T14s EC
Add binding for the EC found in the Thinkpad T14s Gen6 Snapdragon,
which is based on the Qualcomm X1 Elite. Some of the system LEDs
and extra keys are only accessible via the EC.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250918-thinkpad-t14s-ec-v5-1-ac0bc6382c5c@collabora.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2025-09-23 11:20:44 +03:00
Paolo Abeni 6e2f1484b9 Merge branch 'tcp-update-bind-bucket-state-on-port-release'
Jakub Sitnicki says:

====================
tcp: Update bind bucket state on port release

TL;DR
-----

This is another take on addressing the issue we already raised earlier [1].

This time around, instead of trying to relax the bind-conflict checks in
connect(), we make an attempt to fix the tcp bind bucket state accounting.

The goal of this patch set is to make the bind buckets return to "port
reusable by ephemeral connections" state when all sockets blocking the port
from reuse get unhashed.

Changelog
---------
Changes in v5:
- Fix initial port-addr bucket state on saddr update with ip_dynaddr=1
- Add Kuniyuki's tag for tests
- Link to v4: https://lore.kernel.org/r/20250913-update-bind-bucket-state-on-unhash-v4-0-33a567594df7@cloudflare.com

Changes in v4:
- Drop redundant sk_is_connect_bind helper doc comment
- Link to v3: https://lore.kernel.org/r/20250910-update-bind-bucket-state-on-unhash-v3-0-023caaf4ae3c@cloudflare.com

Changes in v3:
- Move the flag from inet_flags to sk_userlocks (Kuniyuki)
- Rename the flag from AUTOBIND to CONNECT_BIND to avoid a name clash (Kuniyuki)
- Drop unreachable code for sk_state == TCP_NEW_SYN_RECV (Kuniyuki)
- Move the helper to inet_hashtables where it's used
- Reword patch 1 description for conciseness
- Link to v2: https://lore.kernel.org/r/20250821-update-bind-bucket-state-on-unhash-v2-0-0c204543a522@cloudflare.com

Changes in v2:
- Rename the inet_sock flag from LAZY_BIND to AUTOBIND (Eric)
- Clear the AUTOBIND flag on disconnect path (Eric)
- Add a test to cover the disconnect case (Eric)
- Link to RFC v1: https://lore.kernel.org/r/20250808-update-bind-bucket-state-on-unhash-v1-0-faf85099d61b@cloudflare.com

Situation
---------

We observe the following scenario in production:

                                                  inet_bind_bucket
                                                state for port 54321
                                                --------------------

                                                (bucket doesn't exist)

// Process A opens a long-lived connection:
s1 = socket(AF_INET, SOCK_STREAM)
s1.setsockopt(IP_BIND_ADDRESS_NO_PORT)
s1.setsockopt(IP_LOCAL_PORT_RANGE, 54000..54500)
s1.bind(192.0.2.10, 0)
s1.connect(192.51.100.1, 443)
                                                tb->fastreuse = -1
                                                tb->fastreuseport = -1
s1.getsockname() -> 192.0.2.10:54321
s1.send()
s1.recv()
// ... s1 stays open.

// Process B opens a short-lived connection:
s2 = socket(AF_INET, SOCK_STREAM)
s2.setsockopt(SO_REUSEADDR)
s2.bind(192.0.2.20, 0)
                                                tb->fastreuse = 0
                                                tb->fastreuseport = 0
s2.connect(192.51.100.2, 53)
s2.getsockname() -> 192.0.2.20:54321
s2.send()
s2.recv()
s2.close()

                                                // bucket remains in this
                                                // state even though port
                                                // was released by s2
                                                tb->fastreuse = 0
                                                tb->fastreuseport = 0

// Process A attempts to open another connection
// when there is connection pressure from
// 192.0.2.30:54000..54500 to 192.51.100.1:443.
// Assume only port 54321 is still available.

s3 = socket(AF_INET, SOCK_STREAM)
s3.setsockopt(IP_BIND_ADDRESS_NO_PORT)
s3.setsockopt(IP_LOCAL_PORT_RANGE, 54000..54500)
s3.bind(192.0.2.30, 0)
s3.connect(192.51.100.1, 443) -> EADDRNOTAVAIL (99)

Problem
-------

We end up in a state where Process A can't reuse ephemeral port 54321 for
as long as there are sockets, like s1, that keep the bind bucket alive. The
bucket does not return to "reusable" state even when all sockets which
blocked it from reuse, like s2, are gone.

The ephemeral port becomes available for use again only after all sockets
bound to it are gone and the bind bucket is destroyed.

Programs which behave like Process B in this scenario - that is, binding to
an IP address without setting IP_BIND_ADDRESS_NO_PORT - might be considered
poorly written. However, the reality is that such implementation is not
actually uncommon. Trying to fix each and every such program is like
playing whack-a-mole.

For instance, it could be any software using Golang's net.Dialer with
LocalAddr provided:

        dialer := &net.Dialer{
                LocalAddr: &net.TCPAddr{IP: srcIP},
        }
        conn, err := dialer.Dial("tcp4", dialTarget)

Or even a ubiquitous tool like dig when using a specific local address:

        $ dig -b 127.1.1.1 +tcp +short example.com

Hence, we are proposing a systematic fix in the network stack itself.

Solution
--------

Please see the description in patch 1.

[1] https://lore.kernel.org/r/20250714-connect-port-search-harder-v3-0-b1a41f249865@cloudflare.com

Reported-by: Lee Valentine <lvalentine@cloudflare.com>
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
====================

Link: https://patch.msgid.link/20250917-update-bind-bucket-state-on-unhash-v5-0-57168b661b47@cloudflare.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-09-23 10:12:17 +02:00
Jakub Sitnicki 8a8241cdaa selftests/net: Test tcp port reuse after unbinding a socket
Exercise the scenario described in detail in the cover letter:

  1) socket A: connect() from ephemeral port X
  2) socket B: explicitly bind() to port X
  3) check that port X is now excluded from ephemeral ports
  4) close socket B to release the port bind
  5) socket C: connect() from ephemeral port X

As well as a corner case to test that the connect-bind flag is cleared:

  1) connect() from ephemeral port X
  2) disconnect the socket with connect(AF_UNSPEC)
  3) bind() it explicitly to port X
  4) check that port X is now excluded from ephemeral ports

Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://patch.msgid.link/20250917-update-bind-bucket-state-on-unhash-v5-2-57168b661b47@cloudflare.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-09-23 10:12:15 +02:00
Jakub Sitnicki d57f4b8749 tcp: Update bind bucket state on port release
Today, once an inet_bind_bucket enters a state where fastreuse >= 0 or
fastreuseport >= 0 after a socket is explicitly bound to a port, it remains
in that state until all sockets are removed and the bucket is destroyed.

In this state, the bucket is skipped during ephemeral port selection in
connect(). For applications using a reduced ephemeral port
range (IP_LOCAL_PORT_RANGE socket option), this can cause faster port
exhaustion since blocked buckets are excluded from reuse.

The reason the bucket state isn't updated on port release is unclear.
Possibly a performance trade-off to avoid scanning bucket owners, or just
an oversight.

Fix it by recalculating the bucket state when a socket releases a port. To
limit overhead, each inet_bind2_bucket stores its own (fastreuse,
fastreuseport) state. On port release, only the relevant port-addr bucket
is scanned, and the overall state is derived from these.

Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250917-update-bind-bucket-state-on-unhash-v5-1-57168b661b47@cloudflare.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-09-23 10:12:15 +02:00
Vincent Mailhol 7c7da8aa3f can: dev: turn can_set_static_ctrlmode() into a non-inline function
can_set_static_ctrlmode() is declared as a static inline. But it is
only called in the probe function of the devices and so does not
really benefit from any kind of optimization.

Transform it into a "normal" function by moving it to

  drivers/net/can/dev/dev.c

Signed-off-by: Vincent Mailhol <mailhol@kernel.org>
Link: https://patch.msgid.link/20250923-can-fix-mtu-v3-2-581bde113f52@kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2025-09-23 10:04:58 +02:00