Merge changes related to system sleep and runtime PM framework for
6.18-rc1:
- Annotate loops walking device links in the power management core
code as _srcu and add macros for walking device links to reduce the
likelihood of coding mistakes related to them (Rafael Wysocki)
- Document time units for *_time functions in the runtime PM API (Brian
Norris)
- Clear power.must_resume in noirq suspend error path to avoid resuming
a dependant device under a suspended parent or supplier (Rafael
Wysocki)
- Fix GFP mask handling during hybrid suspend and make the amdgpu
driver handle hybrid suspend correctly (Mario Limonciello, Rafael
Wysocki)
- Fix GFP mask handling after aborted hibernation in platform mode and
combine exit paths in power_down() to avoid code duplication (Rafael
Wysocki)
- Use vmalloc_array() and vcalloc() in the hibernation core to avoid
open-coded size computations (Qianfeng Rong)
- Fix typo in hibernation core code comment (Li Jun)
- Call pm_wakeup_clear() in the same place where other functions that do
bookkeeping prior to suspend_prepare() are called (Samuel Wu)
* pm-core:
PM: core: Add two macros for walking device links
PM: core: Annotate loops walking device links as _srcu
* pm-runtime:
PM: runtime: Documentation: ABI: Document time units for *_time
* pm-sleep:
PM: hibernate: Combine return paths in power_down()
PM: hibernate: Restrict GFP mask in power_down()
PM: hibernate: Fix pm_hibernation_mode_is_suspend() build breakage
drm/amd: Fix hybrid sleep
PM: hibernate: Add pm_hibernation_mode_is_suspend()
PM: hibernate: Fix hybrid-sleep
PM: sleep: core: Clear power.must_resume in noirq suspend error path
PM: sleep: Make pm_wakeup_clear() call more clear
PM: hibernate: Fix typo in memory bitmaps description comment
PM: hibernate: Use vmalloc_array() and vcalloc() to improve code
Merge cpuidle and power capping changes for 6.18-rc1:
- Fail cpuidle device registration if there is one already to avoid
sysfs-related issues (Rafael Wysocki)
- Use sysfs_emit()/sysfs_emit_at() instead of sprintf()/scnprintf() in
cpuidle (Vivek Yadav)
- Fix device and OF node leaks at probe in the qcom-spm cpuidle driver
and drop unnecessary initialisations from it (Johan Hovold)
- Remove unnecessary address-of operators from the intel_idle cpuidle
driver (Kaushlendra Kumar)
- Rearrange main loop in menu_select() to make the code in that funtion
easier to follow (Rafael Wysocki)
- Convert values in microseconds to ktime using us_to_ktime() where
applicable in the intel_idle power capping driver (Xichao Zhao)
* pm-cpuidle:
cpuidle: Fail cpuidle device registration if there is one already
cpuidle: sysfs: Use sysfs_emit()/sysfs_emit_at() instead of sprintf()/scnprintf()
cpuidle: qcom-spm: drop unnecessary initialisations
cpuidle: qcom-spm: fix device and OF node leaks at probe
intel_idle: Remove unnecessary address-of operators
cpuidle: governors: menu: Rearrange main loop in menu_select()
* pm-powercap:
powercap: idle_inject: use us_to_ktime() where appropriate
Merge energy model management, OPP (operating performance points) and
devfreq updates for 6.18-rc1:
- Prevent CPU capacity updates after registering a perf domain from
failing on a first CPU that is not present (Christian Loehle)
- Add support for the cases in which frequency alone is not sufficient
to uniquely identify an OPP (Krishna Chaitanya Chundru)
- Use to_result() for OPP error handling in Rust (Onur Özkan)
- Add support for LPDDR5 on Rockhip RK3588 SoC to rockchip-dfi devfreq
driver (Nicolas Frattaroli)
- Fix an issue where DDR cycle counts on RK3588/RK3528 with LPDDR4(X)
are reported as half by adding a cycle multiplier to the DFI driver
in rockchip-dfi devfreq-event driver (Nicolas Frattaroli)
- Fix missing error pointer dereference check of regulator instance in
the mtk-cci devfreq driver probe and remove a redundant condition from
an if () statement in that driver (Dan Carpenter, Liao Yuanhong)
* pm-em:
PM: EM: Fix late boot with holes in CPU topology
* pm-opp:
OPP: Add support to find OPP for a set of keys
rust: opp: use to_result for error handling
* pm-devfreq:
PM / devfreq: rockchip-dfi: add support for LPDDR5
PM / devfreq: rockchip-dfi: double count on RK3588
PM / devfreq: mtk-cci: avoid redundant conditions
PM / devfreq: mtk-cci: Fix potential error pointer dereference in probe()
To avoid code duplication and improve clarity, combine the code
paths in power_down() leading to a return from that function.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/3571055.QJadu78ljV@rafael.j.wysocki
[ rjw: Changed the new label name to "exit" ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Commit 12ffc3b151 ("PM: Restrict swap use to later in the
suspend sequence") caused hibernation_platform_enter() to call
pm_restore_gfp_mask() via dpm_resume_end(), so when power_down()
returns after aborting hibernation_platform_enter(), it needs
to match the pm_restore_gfp_mask() call in hibernate() that will
occur subsequently.
Address this by adding a pm_restrict_gfp_mask() call to the relevant
error path in power_down().
Fixes: 12ffc3b151 ("PM: Restrict swap use to later in the suspend sequence")
Cc: 6.16+ <stable@vger.kernel.org> # 6.16+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Commit 495c8d3503 ("PM: hibernate: Add pm_hibernation_mode_is_suspend()")
that introduced pm_hibernation_mode_is_suspend() did not define it in
the case when CONFIG_HIBERNATION is unset, but CONFIG_SUSPEND is set.
Subsequent commit 0a6e9e098f ("drm/amd: Fix hybrid sleep") made the
amdgpu driver use that function which led to kernel build breakage in
the case mentioned above [1].
Address this by using appropriate #ifdeffery around the definition of
pm_hibernation_mode_is_suspend().
Fixes: 0a6e9e098f ("drm/amd: Fix hybrid sleep")
Reported-by: KernelCI bot <bot@kernelci.org>
Closes: https://groups.io/g/kernelci-results/topic/regression_pm_testing/115439919 [1]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Many .../power/... time-related attributes have an "_ms" suffix and also
include language in their ABI description to make clear that their time
is measured in milliseconds. However, 'runtime_suspended_time' and
'runtime_active_time' have neither, and it takes me a nontrivial amount
of time to poke through the source to confirm that they are also
measured in milliseconds.
Update the doc with "millisecond" units.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Link: https://patch.msgid.link/20250923150625.1.If11a14e33d578369db48d678395d0323bdb01915@changeid
[ rjw: Subject edits, changelog tweak ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[Why]
commit 530694f54d ("drm/amdgpu: do not resume device in thaw for
normal hibernation") optimized the flow for systems that are going
into S4 where the power would be turned off. Basically the thaw()
callback wouldn't resume the device if the hibernation image was
successfully created since the system would be powered off.
This however isn't the correct flow for a system entering into
s0i3 after the hibernation image is created. Some of the amdgpu
callbacks have different behavior depending upon the intended
state of the suspend.
[How]
Use pm_hibernation_mode_is_suspend() as an input to decide whether
to run resume during thaw() callback.
Reported-by: Ionut Nechita <ionut_n2001@yahoo.com>
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4573
Tested-by: Ionut Nechita <ionut_n2001@yahoo.com>
Fixes: 530694f54d ("drm/amdgpu: do not resume device in thaw for normal hibernation")
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Kenneth Crudup <kenny@panix.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Cc: 6.17+ <stable@vger.kernel.org> # 6.17+: 495c8d3503: PM: hibernate: Add pm_hibernation_mode_is_suspend()
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Some drivers have different flows for hibernation and suspend. If
the driver opportunistically will skip thaw() then it needs a hint
to know what is happening after the hibernate.
Introduce a new symbol pm_hibernation_mode_is_suspend() that drivers
can call to determine if suspending the system for this purpose.
Tested-by: Ionut Nechita <ionut_n2001@yahoo.com>
Tested-by: Kenneth Crudup <kenny@panix.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Hybrid sleep will hibernate the system followed by running through
the suspend routine. Since both the hibernate and the suspend routine
will call pm_restrict_gfp_mask(), pm_restore_gfp_mask() must be called
before starting the suspend sequence.
Add an explicit call to pm_restore_gfp_mask() to power_down() before
the suspend sequence starts. Add an extra call for pm_restrict_gfp_mask()
when exiting suspend so that the pm_restore_gfp_mask() call in hibernate()
is balanced.
Reported-by: Ionut Nechita <ionut_n2001@yahoo.com>
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4573
Tested-by: Ionut Nechita <ionut_n2001@yahoo.com>
Fixes: 12ffc3b151 ("PM: Restrict swap use to later in the suspend sequence")
Tested-by: Kenneth Crudup <kenny@panix.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20250925185108.2968494-2-superm1@kernel.org
[ rjw: Add comment explainig the new pm_restrict_gfp_mask() call purpose ]
Cc: 6.16+ <stable@vger.kernel.org> # 6.16+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Fix a locking issue in the cpufreq core introduced recently and
caught by lockdep (Christian Loehle).
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Merge tag 'pm-6.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Rafael:
"Fix a locking issue in the cpufreq core introduced recently and caught
by lockdep (Christian Loehle)"
* tag 'pm-6.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: Initialize cpufreq-based invariance before subsys
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Merge tag 'for-6.17-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fix from David Sterba:
"One more regression fix for a problem in zoned mode: mounting would
fail if the number of open and active zones reached a common limit
that didn't use to be checked"
* tag 'for-6.17-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: zoned: don't fail mount needlessly due to too many active zones
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Merge tag '6.17-rc7-ksmbd-server-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
- free_transport fix for disconnect races
- minor delayed work fix
* tag '6.17-rc7-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
smb: server: use disable_work_sync in transport_rdma.c
smb: server: don't use delayed_work for post_recv_credits_work
The prerequisites section listed non-existent packages
"phython-gnuplot" and "phython3-gnuplot", which may mislead users and
cause installation failures.
Update the names to the correct distribution package names
"python-gnuplot" and "python3-gnuplot", helping users avoid confusion
and saving time for those following the instructions.
Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
The cpufreq documentation suggests avoiding direct pointer subtraction
when working with entries in driver_freq_table, as it is relatively
costly. Instead, the recommended approach is to use the provided
iteration macros, like cpufreq_for_each_valid_entry_idx().
Use cpufreq_for_each_entry_idx() instead of pointer subtraction in
cpufreq_frequency_table_cpuinfo() which improves code clarity and
follows the established cpufreq coding style.
While at it, remove redundant local variable initialization from
cpufreq_table_index_unsorted().
No functional change intended.
Signed-off-by: Zihuan Zhang <zhangzihuan@kylinos.cn>
Link: https://patch.msgid.link/20250923075553.45532-1-zhangzihuan@kylinos.cn
[ rjw: Subject tweak, changelog edits, local variable definition tweak ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Previously BTRFS did not look at a device's reported max_open_zones limit,
but starting with commit 04147d8394 ("btrfs: zoned: limit active zones
to max_open_zones"), zoned BTRFS limited the number of concurrently used
block-groups to the number of max_open_zones a device reported, if it
hadn't already reported a number of max_active_zones.
Starting with commit 04147d8394 the number of open zones is treated the
same way as active zones. But this leads to mount failures on filesystems
which have been used before 04147d8394 because too many zones are in an
open state.
Ignore the new limitations on these filesystems, so zones can be finished
or evacuated.
Reported-by: Yuwei Han <hrx@bupt.moe>
Link: https://lore.kernel.org/all/2F48A90AF7DDF380+1790bcfd-cb6f-456b-870d-7982f21b5eae@bupt.moe/
Fixes: 04147d8394 ("btrfs: zoned: limit active zones to max_open_zones")
Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This contains a fix for sched_ext idle CPU selection that likely fixes
a substantial performance regression.
The scx_bpf_select_cpu_dfl/and() kfuncs were incorrectly detecting all
tasks as migration-disabled when called outside ops.select_cpu(), causing
them to always return -EBUSY instead of finding idle CPUs. The fix properly
distinguishes between genuinely migration-disabled tasks vs. the current
task whose migration is temporarily disabled by BPF execution.
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Merge tag 'sched_ext-for-6.17-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext fix from jun Heo:
"This contains a fix for sched_ext idle CPU selection that likely fixes
a substantial performance regression.
The scx_bpf_select_cpu_dfl/and() kfuncs were incorrectly detecting all
tasks as migration-disabled when called outside ops.select_cpu(),
causing them to always return -EBUSY instead of finding idle CPUs.
The fix properly distinguishes between genuinely migration-disabled
tasks vs. the current task whose migration is temporarily disabled by
BPF execution"
* tag 'sched_ext-for-6.17-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
sched_ext: idle: Handle migration-disabled tasks in BPF code
Two user triggerable UAFs:
- Possible race UAF setting up mmaps
- Syzkaller found UAF when erroring an file descriptor creation ioctl due
to the fput() work queue.
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd fixes from Jason Gunthorpe:
"Fix two user triggerable use-after-free issues:
- Possible race UAF setting up mmaps
- Syzkaller found UAF when erroring an file descriptor creation ioctl
due to the fput() work queue"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
iommufd/selftest: Update the fail_nth limit
iommufd: WARN if an object is aborted with an elevated refcount
iommufd: Fix race during abort for file descriptors
iommufd: Fix refcounting race during mmap
- Fix mlx5 devx event delivery to userspace for certain kinds of SRQs
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fix from Jason Gunthorpe:
"Just a one line change, was expecting more rc stuff, but it has been
quiet.
- Fix mlx5 devx event delivery to userspace for certain kinds of SRQs"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions
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Merge tag 'hid-for-linus-2025092201' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina:
- work data memory corruption fix in amd_sfh (Basavaraj Natikar)
- fix for regression in cp2112 where setting a GPIO value would always
fail (Sébastien Szymanski)
- fix for regression in hid-lenovo causing driver to fail on non-ACPI
systems (Janne Grunau)
- a couple device ID additions and tiny device-specific quirks
* tag 'hid-for-linus-2025092201' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: amd_sfh: Add sync across amd sfh work functions
HID: asus: add support for missing PX series fn keys
HID: cp2112: fix setter callbacks return value
HID: lenovo: Use KEY_PERFORMANCE instead of ACPI's platform_profile
HID: intel-thc-hid: intel-quickspi: Add WCL Device IDs
HID: intel-thc-hid: intel-quicki2c: Add WCL Device IDs
These are two small driver fixes for the Airhoa driver.
- Correct a PHY LED mux value so the PHY LED will
blink as it should.
- Fix the MDIO function bitmasks, working around a
HW bug to force-enable the MDIO pins.
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Merge tag 'pinctrl-v6.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Two small driver fixes for the Airhoa driver:
- Correct a PHY LED mux value so the PHY LED will blink as it should
- Fix the MDIO function bitmasks, working around a HW bug to
force-enable the MDIO pins"
* tag 'pinctrl-v6.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: airoha: fix wrong MDIO function bitmaks
pinctrl: airoha: fix wrong PHY LED mux value for LED1 GPIO46
When scx_bpf_select_cpu_dfl()/and() kfuncs are invoked outside of
ops.select_cpu() we can't rely on @p->migration_disabled to determine if
migration is disabled for the task @p.
In fact, migration is always disabled for the current task while running
BPF code: __bpf_prog_enter() disables migration and __bpf_prog_exit()
re-enables it.
To handle this, when @p->migration_disabled == 1, check whether @p is
the current task. If so, migration was not disabled before entering the
callback, otherwise migration was disabled.
This ensures correct idle CPU selection in all cases. The behavior of
ops.select_cpu() remains unchanged, because this callback is never
invoked for the current task and migration-disabled tasks are always
excluded.
Example: without this change scx_bpf_select_cpu_and() called from
ops.enqueue() always returns -EBUSY; with this change applied, it
correctly returns idle CPUs.
Fixes: 06efc9fe0b ("sched_ext: idle: Handle migration-disabled tasks in idle selection")
Cc: stable@vger.kernel.org # v6.16+
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Acked-by: Changwoo Min <changwoo@igalia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This makes it safer during the disconnect and avoids
requeueing.
It's ok to call disable_work[_sync]() more than once.
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Fixes: 0626e6641f ("cifsd: add server handler for central processing and tranport layers")
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
If we are using a hardcoded delay of 0 there's no point in
using delayed_work it only adds confusion.
The client also uses a normal work_struct and now
it is easier to move it to the common smbdirect_socket.
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Fixes: 0626e6641f ("cifsd: add server handler for central processing and tranport layers")
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
- Do the math properly in Allwinner's ccu_mp_recalc_rate() so
clk rates aren't bogus
- Fix a clock domain regression on Renesas R-Car M1A, R-Car H1,
and RZ/A1 by registering the domain after the pmdomain bus is
registered instead of before
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"Fixes to the Allwinner and Renesas clk drivers:
- Do the math properly in Allwinner's ccu_mp_recalc_rate() so clk
rates aren't bogus
- Fix a clock domain regression on Renesas R-Car M1A, R-Car H1,
and RZ/A1 by registering the domain after the pmdomain bus is
registered instead of before"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: sunxi-ng: mp: Fix dual-divider clock rate readback
clk: renesas: mstp: Add genpd OF provider at postcore_initcall()
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Merge tag 'for-6.17-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull a few more btrfs fixes from David Sterba:
- in tree-checker, fix wrong size of check for inode ref item
- in ref-verify, handle combination of mount options that allow
partially damaged extent tree (reported by syzbot)
- additional validation of compression mount option to catch invalid
string as level
* tag 'for-6.17-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: reject invalid compression level
btrfs: ref-verify: handle damaged extent root tree
btrfs: tree-checker: fix the incorrect inode ref size check
One driver fix for a dma error checking thinko.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fix from James Bottomley:
"One driver fix for a dma error checking thinko"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: mcq: Fix memory allocation checks for SQE and CQE
When new structures and events were added to UAPI in v6.5 kernel, the
required update to the subsystem ABI version returned to userspace client
was overlooked. The version is now updated.
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Merge tag 'firewire-fixes-6.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fix from Takashi Sakamoto:
"When new structures and events were added to UAPI in v6.5 kernel, the
required update to the subsystem ABI version returned to userspace
client was overlooked. The version is now updated"
* tag 'firewire-fixes-6.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: core: fix overlooked update of subsystem ABI version
Refuse to register a cpuidle device if the given CPU has a cpuidle
device already and print a message regarding it.
Without this, an attempt to register a new cpuidle device without
unregistering the existing one leads to the removal of the existing
cpuidle device without removing its sysfs interface.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The ->show() callbacks in sysfs should use sysfs_emit() or
sysfs_emit_at() when formatting values for user space.
These helpers are the recommended way to ensure correct buffer
handling and consistency across the kernel.
See Documentation/filesystems/sysfs.rst for details.
No functional change intended.
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Vivek Yadav <vivekyadav1207731111@gmail.com>
Link: https://patch.msgid.link/20250919165657.233349-1-vivekyadav1207731111@gmail.com
[ rjw: Minor subject edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
commit 2a6c727387 ("cpufreq: Initialize cpufreq-based
frequency-invariance later") postponed the frequency invariance
initialization to avoid disabling it in the error case.
This isn't locking safe, instead move the initialization up before
the subsys interface is registered (which will rebuild the
sched_domains) and add the corresponding disable on the error path.
Observed lockdep without this patch:
[ 0.989686] ======================================================
[ 0.989688] WARNING: possible circular locking dependency detected
[ 0.989690] 6.17.0-rc4-cix-build+ #31 Tainted: G S
[ 0.989691] ------------------------------------------------------
[ 0.989692] swapper/0/1 is trying to acquire lock:
[ 0.989693] ffff800082ada7f8 (sched_energy_mutex){+.+.}-{4:4}, at: rebuild_sched_domains_energy+0x30/0x58
[ 0.989705]
but task is already holding lock:
[ 0.989706] ffff000088c89bc8 (&policy->rwsem){+.+.}-{4:4}, at: cpufreq_online+0x7f8/0xbe0
[ 0.989713]
which lock already depends on the new lock.
Fixes: 2a6c727387 ("cpufreq: Initialize cpufreq-based frequency-invariance later")
Signed-off-by: Christian Loehle <christian.loehle@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
In kernel v6.5, several functions were added to the cdev layer. This
required updating the default version of subsystem ABI up to 6, but
this requirement was overlooked.
This commit updates the version accordingly.
Fixes: 6add87e976 ("firewire: cdev: add new version of ABI to notify time stamp at request/response subaction of transaction#")
Link: https://lore.kernel.org/r/20250920025148.163402-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
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Merge tag '6.17-rc6-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- Two unlink fixes: one for rename and one for deferred close
- Four smbdirect/RDMA fixes: fix buffer leak in negotiate, two fixes
for races in smbd_destroy, fix offset and length checks in recv_done
* tag '6.17-rc6-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb: client: fix smbdirect_recv_io leak in smbd_negotiate() error path
smb: client: fix file open check in __cifs_unlink()
smb: client: let smbd_destroy() call disable_work_sync(&info->post_send_credits_work)
smb: client: use disable[_delayed]_work_sync in smbdirect.c
smb: client: fix filename matching of deferred files
smb: client: let recv_done verify data_offset, data_length and remaining_data_length
The comment above the condition `if (cpu->last_sample_time)` clearly
indicates that the branch is taken for the vast majority of invocations
after the first sample in a cycle. The first sample is a one-time
initialization case.
Add likely() hint to the condition to improve branch prediction for
this performance-critical path in intel_pstate_sample().
Signed-off-by: Yaxiong Tian <tianyaxiong@kylinos.cn>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Currently, cpufreq allows drivers to implement both ->target() and
->target_index() callbacks, but that can lead to ambiguous or incorrect
behavior.
For this reason, prevent cpufreq drivers implementing both ->target()
and ->target_index() at the same time from registering.
This check can help to catch driver implementation mistakes early and
improve overall robustness, without affecting existing valid drivers.
Signed-off-by: Zihuan Zhang <zhangzihuan@kylinos.cn>
Link: https://patch.msgid.link/20250908085738.31602-1-zhangzihuan@kylinos.cn
[ rjw: Subject adjustment and changelog rewrite ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
So far, HWP has never been enabled without EPP (Energy-Performance
Preference) interface support, since the lack of the latter indicates an
incomplete implementation of HWP, which was the case on early development
vehicle platforms. However, HWP can be expected to work if DEC (Dynamic
Efficiency Control) is enabled as indicated by setting bit 27 in
MSR_IA32_POWER_CTL (DEC enable bit).
Accordingly, allow HWP to be enabled if the EPP interface is not
supported so long as DEC is enabled in the processor.
Still, the EPP control sysfs interface is useless when EPP is not
supported, so do not expose it in that case.
Link: https://lore.kernel.org/linux-pm/20250904000608.260817-2-srinivas.pandruvada@linux.intel.com/
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Co-developed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Merge tag 'block-6.17-20250918' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
"A set of fixes for an issue with md array assembly and drbd for
devices supporting write zeros"
* tag 'block-6.17-20250918' of git://git.kernel.dk/linux:
drbd: init queue_limits->max_hw_wzeroes_unmap_sectors parameter
md: init queue_limits->max_hw_wzeroes_unmap_sectors parameter
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Merge tag 'io_uring-6.17-20250919' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
- Fix for a regression introduced in the io-wq worker creation logic.
- Remove the allocation cache for the msg_ring io_kiocb allocations. I
have a suspicion that there's a bug there, and since we just fixed
one in that area, let's just yank the use of that cache entirely.
It's not that important, and it kills some code.
- Treat a closed ring like task exiting in that any requests that
trigger post that condition should just get canceled. Doesn't fix any
real issues, outside of having tasks being able to rely on that
guarantee.
- Fix for a bug in the network zero-copy notification mechanism, where
a comparison for matching tctx/ctx for notifications was buggy in
that it didn't correctly compare with the previous notification.
* tag 'io_uring-6.17-20250919' of git://git.kernel.dk/linux:
io_uring: fix incorrect io_kiocb reference in io_link_skb
io_uring/msg_ring: kill alloc_cache for io_kiocb allocations
io_uring: include dying ring in task_work "should cancel" state
io_uring/io-wq: fix `max_workers` breakage and `nr_workers` underflow
- fix an ACPI I2C HID driver breakage due to not initializing a structure
on the stack and passing garbage down to GPIO core
- ignore touchpad wakeup on GPD G1619-05
- fix debouncing configuration when looking up GPIOs in ACPI
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Merge tag 'gpio-fixes-for-v6.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix an ACPI I2C HID driver breakage due to not initializing a
structure on the stack and passing garbage down to GPIO core
- ignore touchpad wakeup on GPD G1619-05
- fix debouncing configuration when looking up GPIOs in ACPI
* tag 'gpio-fixes-for-v6.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpiolib: acpi: initialize acpi_gpio_info struct
gpiolib: acpi: Ignore touchpad wakeup on GPD G1619-05
gpiolib: acpi: Program debounce when finding GPIO
- mvsdio: Fix dma_unmap_sg() nents value
- sdhci: Fix clock management for UHS-II
- sdhci-pci-gli: Fix initialization of UHS-II for GL9767
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Merge tag 'mmc-v6.17-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC host fixes from Ulf Hansson:
- mvsdio: Fix dma_unmap_sg() nents value
- sdhci: Fix clock management for UHS-II
- sdhci-pci-gli: Fix initialization of UHS-II for GL9767
* tag 'mmc-v6.17-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-pci-gli: GL9767: Fix initializing the UHS-II interface during a power-on
mmc: sdhci-uhs2: Fix calling incorrect sdhci_set_clock() function
mmc: sdhci: Move the code related to setting the clock from sdhci_set_ios_common() into sdhci_set_ios()
mmc: mvsdio: Fix dma_unmap_sg() nents value
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Merge tag 'loongarch-fixes-6.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch fixes from Huacai Chen:
"Fix some build warnings for RUST-enabled objtool check, align ACPI
structures for ARCH_STRICT_ALIGN, fix an unreliable stack for live
patching, add some NULL pointer checkings, and fix some bugs around
KVM"
* tag 'loongarch-fixes-6.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch: KVM: Avoid copy_*_user() with lock hold in kvm_pch_pic_regs_access()
LoongArch: KVM: Avoid copy_*_user() with lock hold in kvm_eiointc_sw_status_access()
LoongArch: KVM: Avoid copy_*_user() with lock hold in kvm_eiointc_regs_access()
LoongArch: KVM: Avoid copy_*_user() with lock hold in kvm_eiointc_ctrl_access()
LoongArch: KVM: Fix VM migration failure with PTW enabled
LoongArch: KVM: Remove unused returns and semicolons
LoongArch: vDSO: Check kcalloc() result in init_vdso()
LoongArch: Fix unreliable stack for live patching
LoongArch: Replace sprintf() with sysfs_emit()
LoongArch: Check the return value when creating kobj
LoongArch: Align ACPI structures if ARCH_STRICT_ALIGN enabled
LoongArch: Update help info of ARCH_STRICT_ALIGN
LoongArch: Handle jump tables options for RUST
LoongArch: Make LTO case independent in Makefile
objtool/LoongArch: Mark special atomic instruction as INSN_BUG type
objtool/LoongArch: Mark types based on break immediate code
bugs in the af_alg interface.
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Merge tag 'v6.17-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"This fixes a NULL pointer dereference in ccp and a couple of bugs in
the af_alg interface"
* tag 'v6.17-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg
crypto: af_alg - Set merge to zero early in af_alg_sendmsg
crypto: ccp - Always pass in an error pointer to __sev_platform_shutdown_locked()
The process of the report is delegated across different work functions.
Hence, add a sync mechanism to protect SFH work data across functions.
Fixes: 4b2c53d93a ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Reported-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Closes: https://lore.kernel.org/all/a21abca5-4268-449d-95f1-bdd7a25894a5@linux.dev/
Tested-by: Prakruthi SP <Prakruthi.SP@amd.com>
Co-developed-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
