The second stage of test.sh ("run baseline data traffic") performs a
basic connectivity check with ping -qfc 500 -w 3. On slower CI
instances this is too strict for TCP: the RTT is high enough that 500
echo requests do not reliably complete within 3 seconds, so the stage
flakes and the test fails even though the ovpn setup is healthy.
Reduce the packet count to 100 for both the plain and 3000-byte pings in
that stage. This still verifies peer setup, key exchange, routing, and
data-path traffic, without making the basic connectivity check depend on
timing out under load.
Fixes: 959bc330a439 ("testing/selftests: add test tool and scripts for ovpn module") Signed-off-by: Ralf Lici <ralf@mandelbit.com> Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Ralf Lici [Wed, 25 Mar 2026 16:49:18 +0000 (17:49 +0100)]
ovpn: ensure packet delivery happens with BH disabled
ovpn injects decrypted packets into the netdev RX path through
ovpn_netdev_write() which invokes gro_cells_receive() and
dev_dstats_rx_add().
ovpn_netdev_write() is normally called in softirq context,
however, in case of TCP connections it may also be invoked
process context.
When this happens gro_cells_receive() will throw a warning:
[ 230.183747][ T12] WARNING: net/core/gro_cells.c:30 at gro_cells_receive+0x708/0xaa0, CPU#1: kworker/u16:0/12
and lockdep will also report a potential inconsistent lock state:
WARNING: inconsistent lock state
7.0.0-rc4+ #246 Tainted: G W
--------------------------------
inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
because attempts to acquire gro_cells->bh_lock by both
contexts may lead to a deadlock.
At the same time, dev_dstats_rx_add() does not expect to race
with a softirq (which may happen when invoked in process context),
because the latter may access its per-cpu state and corrupt
it.
Fix all this by invoking local_bh_disable/enable() around
gro_cells_receive() and dev_dstats_rx_add() to ensure that
bottom halves are always disabled before calling both of
them.
Qingfang Deng [Mon, 27 Apr 2026 04:00:11 +0000 (12:00 +0800)]
ovpn: reset MAC header before passing skb up
After decapsulating a packet, the skb->mac_header still points to the
outer transport header.
Fix this by calling skb_reset_mac_header() in ovpn_netdev_write() to
ensure the MAC header points to the beginning of
the inner IP/network packet, as expected by the rest of the stack.
Reported-by: Minqiang Chen <ptpt52@gmail.com> Fixes: 8534731dbf2d ("ovpn: implement packet processing") Signed-off-by: Qingfang Deng <qingfang.deng@linux.dev> Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Hugo Villeneuve [Thu, 5 Mar 2026 18:06:30 +0000 (13:06 -0500)]
ARM: dts: imx6ul-var-som: add support for LVDS display panel
Add support for the LD configuration option (LVDS encoder assembled on SOM)
so that the LVDS display panel on the concerto EVK board works properly.
Not all VAR-SOM-6UL SOMs have the LD configuration option so factor out
this functionality to a separate dtsi.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Hugo Villeneuve [Thu, 5 Mar 2026 18:06:27 +0000 (13:06 -0500)]
ARM: dts: imx6ul-var-som: add support for EC configuration option (ENET1)
ENET1 is currently disabled and not supported/working on the concerto EVK.
Add support for this optional configuration in a separate dtsi, so that it
can be selectively enabled/disabled.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Hugo Villeneuve [Thu, 5 Mar 2026 18:06:26 +0000 (13:06 -0500)]
ARM: dts: imx6ul-var-som: factor out ENET2 ethernet support
Not all boards use the ethernet ENET2 port, so factor out this
functionality to a separate dtsi. On the concerto board, this
uses the ethernet PHY assembled on it.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Hugo Villeneuve [Thu, 5 Mar 2026 18:06:25 +0000 (13:06 -0500)]
ARM: dts: imx6ul-var-som: add proper Wifi and Bluetooth support
Add proper support for the optional Wifi and Bluetooth configuration on
VAR-SOM-6UL so that it works out of the box, without any custom scripts.
The Wifi/BT module support is mutually exclusive with SD card interface.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Hugo Villeneuve [Thu, 5 Mar 2026 18:06:24 +0000 (13:06 -0500)]
ARM: dts: imx6ul-var-som: factor out SD card support
Move SD support to a separate dtsi, since it cannot be used at the
same time as the Wifi/BT module. Also not all boards support the SD card.
Move pinctrl_usdhc1* to the common imx6ul-var-som-common dtsi so that it
can be used by the future Wifi/BT dtsi.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Hugo Villeneuve [Thu, 5 Mar 2026 18:06:22 +0000 (13:06 -0500)]
ARM: dts: imx6ul-var-som-concerto: Factor out common parts for all CPU variants
Export common parts to the Variscite VAR-SOM-6UL dtsi so that they can be
reused on other boards and to simplify adding future dedicated device tree
files for each CPU variant.
Move i2c1 pinctrl to var-som dtsi pinmux, so that it can be reused by other
boards.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Hugo Villeneuve [Thu, 5 Mar 2026 18:06:21 +0000 (13:06 -0500)]
ARM: dts: imx6ul-var-som: Factor out common parts for all CPU variants
Factor out the parts on the Variscite VAR-SOM-6UL [1] that are common to
all CPU variants (6UL, 6ULL, etc). This will simplify adding future
dedicated device tree files for each CPU variant.
Link https://dev.variscite.com/var-som-6ul [1]
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Add support for the imx6ull CPU variant of the Variscite concerto
board evaluation kit with a VAR-SOM-6UL.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
There is no Variscite module named VAR-SOM-MX6UL, but there is VAR-SOM-MX6
and also VAR-SOM-6UL, so it is confusing at first to know to which one it
refers to. The imx6ul-var-som* dts/dtsi supports only the VAR-SOM-6UL [1],
not VAR-SOM-MX6 [2], so modify comments and model descriptions accordingly.
There is no Variscite module named VAR-SOM-MX6UL, but there is VAR-SOM-MX6
and also VAR-SOM-6UL, so it is confusing at first to know to which one it
refers to. The imx6ul-var-som* dts/dtsi supports only the VAR-SOM-6UL [1],
not VAR-SOM-MX6 [2], so modify comments and model descriptions accordingly.
Link https://dev.variscite.com/var-som-6ul [1] Link: https://dev.variscite.com/var-som-mx6 Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Hugo Villeneuve [Thu, 5 Mar 2026 18:06:17 +0000 (13:06 -0500)]
ARM: dts: imx6ul-var-som: fix warning for boolean property with a value
dmesg warning:
OF: /soc/bus@2000000/ethernet@20b4000/mdio/ethernet-phy@3: Read of
boolean property 'micrel,rmii-reference-clock-select-25-mhz' with a
value.
Using of_property_read_bool() for non-boolean properties is deprecated and
results in a warning during runtime since commit c141ecc3cecd
("of: Warn when of_property_read_bool() is used on non-boolean properties")
micrel,rmii-reference-clock-select-25-mhz is a boolean property and should
not have a value, so remove it.
Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Hugo Villeneuve [Thu, 5 Mar 2026 18:06:16 +0000 (13:06 -0500)]
ARM: dts: imx6ul-var-som: fix warning for non-existent dc-supply property
The dc-supply property is non-existent in Linux now, nor when this DTS file
was created when importing it from Variscite own kernel.
Therefore remove it to fix this warning:
imx6ul-var-som-concerto.dtb: cpu@0 (arm,cortex-a7): Unevaluated
properties are not allowed ('dc-supply' was unexpected)
from schema $id: http://devicetree.org/schemas/arm/cpus.yaml
Fixes: 9d6a67d9c7a9 ("ARM: dts: imx6ul: Add Variscite VAR-SOM-MX6UL SoM support") Cc: stable@kernel.org Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Shengjiu Wang [Tue, 24 Mar 2026 06:15:56 +0000 (14:15 +0800)]
arm64: dts: add support for NXP i.MX95 15x15 audio board (version 2)
i.MX Audio Board is a configurable and functional audio processing
platform. Integrating a variety of audio input and output interfaces into
the system, the i.MX Audio Board supports HDMI input, HDMI eARC,
S/PDIF I/O, 2-ch ADC line-in, 24-ch DAC line-out and more. Based on these
features, rich audio application cases can be realized.
This is a basic device tree supporting with i.MX95 15x15 SoC and Audio
board (version 2).
- Six Cortex-A55
- NXP PCAL6416 GPIO expanders
- RGB LEDs via GPIO expander
- LPI2C1, LPI2C2, LPI2C3 controllers
- LPUART1 (console)
- USDHC1 (eMMC), USDHC2 (SD)
- Three DAC (AK4458)
- One ADC (AK5552)
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Introduce a new DT compatible string for the NXP i.MX95 15x15 audio board
(version 2).
i.MX Audio Board is a configurable and functional audio processing
platform. Integrating a variety of audio input and output interfaces into
the system, the i.MX Audio Board supports HDMI input, HDMI eARC,
S/PDIF I/O, 2-ch ADC line-in, 24-ch DAC line-out and more. Based on these
features, rich audio application cases can be realized.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Signed-off-by: Frank Li <Frank.Li@nxp.com>
Tejun Heo [Mon, 4 May 2026 21:21:56 +0000 (11:21 -1000)]
sched_ext: Add __printf format attributes to scx_vexit() and bstr formatters
scx_vexit() forwards (fmt, args) to vscnprintf(); bstr_format() and
__bstr_format() forward fmt to bstr_printf(); the BPF kfunc wrappers
scx_bpf_exit_bstr(), scx_bpf_error_bstr() and scx_bpf_dump_bstr() in
turn forward fmt to those formatters. None of them have __printf(),
so clang -Wmissing-format-attribute fires on the forwarded calls and
C-side callers don't get format-string checking.
Annotate the six functions with __printf(N, 0) matching the fmt
parameter position in each.
nilfs2: reject CLEAN_SEGMENTS ioctl with out-of-range segment numbers
Syzbot reported a hung task in nilfs_transaction_begin() where multiple
tasks performing chmod() on a nilfs2 mount blocked for over 143 seconds
waiting to acquire ns_segctor_sem for read:
INFO: task syz.0.17:5918 blocked for more than 143 seconds.
Call Trace:
schedule+0x164/0x360
rwsem_down_read_slowpath+0x6d9/0x940
down_read+0x99/0x2e0
nilfs_transaction_begin+0x364/0x710 fs/nilfs2/segment.c:221
nilfs_setattr+0x124/0x2c0 fs/nilfs2/inode.c:921
notify_change+0xc1a/0xf40
chmod_common+0x273/0x4a0
do_fchmodat+0x12d/0x230
The writer holding ns_segctor_sem was a concurrent
NILFS_IOCTL_CLEAN_SEGMENTS caller, stuck inside printk while emitting
per-element warnings from nilfs_sufile_updatev():
The root cause is that user-supplied segment numbers are not validated
before nilfs_clean_segments() begins doing work; the range check on
each segnum is performed deep inside the call chain by
nilfs_sufile_updatev(), which emits a nilfs_warn() per invalid entry
while still holding the segctor lock and the sufile mi_sem. Under load
(repeated invocations across multiple mounts saturating the global
printk path), the cumulative printk latency keeps ns_segctor_sem held
long enough to trip the hung_task watchdog, blocking concurrent
operations such as chmod() that need ns_segctor_sem for read.
Fix by validating the contents of kbufs[4] in nilfs_clean_segments()
immediately after acquiring ns_segctor_sem via nilfs_transaction_lock().
Holding ns_segctor_sem serializes the check against
nilfs_ioctl_resize(), which can modify ns_nsegments, so the validation
uses a consistent value. Out-of-range segment numbers are rejected
with -EINVAL before any segment-cleaning work begins, so the bad
entries never reach the per-element diagnostic path inside
nilfs_sufile_updatev().
T.J. Mercier [Thu, 30 Apr 2026 20:11:42 +0000 (13:11 -0700)]
docs: cgroup-v1: Update charge-commit section
Commit 1d8f136a421f ("memcg/hugetlb: remove memcg hugetlb
try-commit-cancel protocol") removed mem_cgroup_commit_charge() and
mem_cgroup_cancel_charge(), but the docs still refer to those functions.
There is no longer any charge cancellation.
Update the docs to match the code.
Signed-off-by: T.J. Mercier <tjmercier@google.com> Signed-off-by: Tejun Heo <tj@kernel.org>
David Carlier [Thu, 30 Apr 2026 09:27:47 +0000 (10:27 +0100)]
sched_ext: idle: Recheck prev_cpu after narrowing allowed mask
scx_select_cpu_dfl() narrows @allowed to @cpus_allowed & @p->cpus_ptr
when the BPF caller supplies a @cpus_allowed that differs from
@p->cpus_ptr and @p doesn't have full affinity. However,
@is_prev_allowed was computed against the original (wider)
@cpus_allowed, so the prev_cpu fast paths could pick a @prev_cpu that
is in @cpus_allowed but not in @p->cpus_ptr, violating the intended
invariant that the returned CPU is always usable by @p. The kernel
masks this via the SCX_EV_SELECT_CPU_FALLBACK fallback, but the
behavior contradicts the documented contract.
Move the @is_prev_allowed evaluation past the narrowing block so it
tests against the final @allowed mask.
Fixes: ee9a4e92799d ("sched_ext: idle: Properly handle invalid prev_cpu during idle selection") Cc: stable@vger.kernel.org # v6.16+ Assisted-by: Claude <noreply@anthropic.com> Signed-off-by: David Carlier <devnexen@gmail.com> Reviewed-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
sched_ext: Remove redundant rcu_read_lock/unlock() in sysrq_handle_sched_ext_reset()
sysrq_handle_sched_ext_reset() is called from __handle_sysrq(), which
already holds rcu_read_lock() while invoking the sysrq handler. Remove
the redundant rcu_read_lock/unlock() pair.
docs: kselftest: Document the FORCE_TARGETS build variable
FORCE_TARGETS has been part of the kselftest build system for
some time but is absent from the developer documentation. Without
an entry here, users relying on kselftest in CI pipelines would
have to read the selftests Makefile directly to discover the
option.
A build that exits zero despite some targets failing can mask
real breakage and mislead automated systems into reporting
success. Add a dedicated section so that CI authors can easily
find and adopt FORCE_TARGETS=1 to turn such silent partial
failures into hard errors.
Johan Hovold [Fri, 24 Apr 2026 10:24:00 +0000 (12:24 +0200)]
isa: switch to dynamic root device
Driver core expects devices to be dynamically allocated and will, for
example, complain loudly if a device that lacks a release function is
ever freed.
Use root_device_register() to allocate and register the root device
instead of open coding using a static device.
Note that this also fixes a reference leak in case device_register()
fails which may be flagged by static checkers.
Linus Torvalds [Mon, 4 May 2026 19:48:30 +0000 (12:48 -0700)]
Merge tag 'for-linus-7.1-2' of https://github.com/cminyard/linux-ipmi
Pull IPMI fixes from Corey Minyard:
"Fix a number of issues that came up recently
The first two fixes are workarounds for buggy IPMI hardware. The
hardware says it has data for the IPMI driver to read constantly, so
the driver reads the data constantly, causing any new requests to be
blocked.
The first fix was to check for invalid data right when the data was
read from the device and stop the operation there (there was a later
check for invalid data, but it could not stop the operation at that
point). It turned out the device was providing good data, so that
didn't fix the issue, but it's still a good check.
The second fix stops fetching this data after a few fetches and allows
other operations to occur. The driver won't work very well, but at
least it won't wedge. This seems to fix the issue.
The third issue is a problem I spotted while working on the previous
issue where if a certain memory allocation failed the driver would
stop working.
The fourth issue is a problem was a missing set to NULL on a PTR_ERR()
return, introduced in the previous series for 7.1"
* tag 'for-linus-7.1-2' of https://github.com/cminyard/linux-ipmi:
ipmi:ssif: NULL thread on error
ipmi:si: Return state to normal if message allocation fails
ipmi: Add limits to event and receive message requests
ipmi: Check event message buffer response for bad data
Thomas Weißschuh [Mon, 27 Apr 2026 16:04:56 +0000 (18:04 +0200)]
gen_compile_commands: Ignore libgcc.a
Some architectures link libgcc.a from the toolchain into the kernel.
gen_compile_commands trie to read the kbuild .cmd files of its
constituent object files, which are not available.
Flat out ignore libgcc.a, as it is not built as part of the kernel
anyways.
sched_ext: Skip past-sched_ext_dead() tasks in scx_task_iter_next_locked()
scx_task_iter's cgroup-scoped mode can return tasks whose
sched_ext_dead() has already completed: cgroup_task_dead() removes
from cset->tasks after sched_ext_dead() in finish_task_switch() and is
irq-work deferred on PREEMPT_RT. The global mode is fine -
sched_ext_dead() removes from scx_tasks via list_del_init() first.
Callers (sub-sched enable prep/abort/apply, scx_sub_disable(),
scx_fail_parent()) assume returned tasks are still on @sch and trip
WARN_ON_ONCE() or operate on torn-down state otherwise.
Set %SCX_TASK_OFF_TASKS in sched_ext_dead() under @p's rq lock and
have scx_task_iter_next_locked() skip flagged tasks under the same
lock. Setter and reader serialize on the per-task rq lock - no race.
cgroup, sched_ext: Include exiting tasks in cgroup iter
a72f73c4dd9b ("cgroup: Don't expose dead tasks in cgroup") made
css_task_iter_advance() skip exiting tasks so cgroup.procs stays consistent
with waitpid() visibility. Unfortunately, this broke scx_task_iter.
scx_task_iter walks either scx_tasks (global) or a cgroup subtree via
css_task_iter() and the two modes are expected to cover the same set of
tasks. After the above change the cgroup-scoped mode silently skips tasks
past exit_signals() that are still on scx_tasks.
scx_sub_enable_workfn()'s abort path is one of the symptoms: an exiting
SCX_TASK_SUB_INIT task can race past the cgroup iter leaking
__scx_init_task() state. Other iterations share the same gap.
Add CSS_TASK_ITER_WITH_DEAD to opt out of the skip and use it from
scx_task_iter().
Tejun Heo [Fri, 1 May 2026 18:31:22 +0000 (08:31 -1000)]
cgroup: Defer css percpu_ref kill on rmdir until cgroup is depopulated
A chain of commits going back to v7.0 reworked rmdir to satisfy the
controller invariant that a subsystem's ->css_offline() must not run while
tasks are still doing kernel-side work in the cgroup.
[1] d245698d727a ("cgroup: Defer task cgroup unlink until after the task is done switching out")
[2] a72f73c4dd9b ("cgroup: Don't expose dead tasks in cgroup")
[3] 1b164b876c36 ("cgroup: Wait for dying tasks to leave on rmdir")
[4] 4c56a8ac6869 ("cgroup: Fix cgroup_drain_dying() testing the wrong condition")
[5] 13e786b64bd3 ("cgroup: Increment nr_dying_subsys_* from rmdir context")
[1] moved task cset unlink from do_exit() to finish_task_switch() so a
task's cset link drops only after the task has fully stopped scheduling.
That made tasks past exit_signals() linger on cset->tasks until their final
context switch, which led to a series of problems as what userspace expected
to see after rmdir diverged from what the kernel needs to wait for. [2]-[5]
tried to bridge that divergence: [2] filtered the exiting tasks from
cgroup.procs; [3] had rmdir(2) sleep in TASK_UNINTERRUPTIBLE for them; [4]
fixed the wait's condition; [5] made nr_dying_subsys_* visible
synchronously.
The cgroup_drain_dying() wait in [3] turned out to be a dead end. When the
rmdir caller is also the reaper of a zombie that pins a pidns teardown (e.g.
host PID 1 systemd reaping orphan pids that were re-parented to it during
the same teardown), rmdir blocks in TASK_UNINTERRUPTIBLE waiting for those
pids to free, the pids can't free because PID 1 is the reaper and it's stuck
in rmdir, and the system A-A deadlocks. No internal lock ordering breaks
this; the wait itself is the bug.
The css killing side that drove the original reorder, however, can be made
cleanly asynchronous: ->css_offline() is already async, run from
css_killed_work_fn() driven by percpu_ref_kill_and_confirm(). The fix is to
make that chain start only after all tasks have left the cgroup. rmdir's
user-visible side then returns as soon as cgroup.procs and friends are
empty, while ->css_offline() still runs only after the cgroup is fully
drained.
Verified by the original reproducer (pidns teardown + zombie reaper, runs
under vng) which hangs vanilla and succeeds here, and by per-commit
deterministic repros for [2], [3], [4], [5] with a boot parameter that
widens the post-exit_signals() window so each state is reliably reachable.
Some stress tests on top of that.
cgroup_apply_control_disable() has the same shape of pre-existing race:
when a controller is disabled via subtree_control, kill_css() ran
synchronously while tasks past exit_signals() could still be linked to
the cgroup's csets, and ->css_offline() could fire before they drained.
This patch preserves the existing synchronous behavior at that call site
(kill_css_sync() + kill_css_finish() back-to-back) and a follow-up patch
will defer kill_css_finish() there using a per-css trigger.
This seems like the right approach and I don't see problems with it. The
changes are somewhat invasive but not excessively so, so backporting to
-stable should be okay. If something does turn out to be wrong, the fallback
is to revert the entire chain ([1]-[5]) and rework in the development branch
instead.
v2: Pin cgrp across the deferred destroy work with explicit
cgroup_get()/cgroup_put() around queue_work() and the work_fn. v1
wasn't actually broken (ordered cgroup_offline_wq + queue_work order
in cgroup_task_dead() saved it) but the explicit ref removes the
dependency on those non-obvious invariants. Also note the
pre-existing cgroup_apply_control_disable() race in the description;
a follow-up will defer kill_css_finish() there.
Introduce driver for the External Memory Controller (EMC) found in
Tegra114 SoC. It controls the external DRAM on the board. The purpose of
this driver is to program memory timing for external memory on the EMC
clock rate change.
Include Tegra114 support into existing Tegra124 EMC schema with the most
notable difference being the amount of EMC timings and a few SoC unique
entries.
David Gow [Sat, 25 Apr 2026 03:41:53 +0000 (11:41 +0800)]
kunit: config: Enable KUNIT_DEBUGFS by default
The KUNIT_DEBUGFS option is currently enabled based on the value of
KUNIT_ALL_TESTS, but it really doesn't have anything to do with the set of
enabled tests, so just enable it by default anyway. In particular, this
shouldn't be only visible if KUNIT_ALL_TESTS is set, which is quite
confusing.
Add Memory Controller driver support for Tegra238 SOC, including:
- MC client definitions with Tegra238-specific stream IDs
- Reuse of Tegra234 ICC operations for bandwidth management via BPMP-FW
- Device tree compatible string "nvidia,tegra238-mc"
Export tegra234_mc_icc_ops so it can be shared with the Tegra238 MC
driver, as both SoCs use the same ICC aggregation and bandwidth
management logic.
memory: tegra: Restore MC interrupt masks on resume
The MC interrupt mask registers lose their state across Tegra low power
suspend state (aka. SC7). Without re-applying them on resume, MC
interrupts that were enabled at probe remain masked after wake, so any
post-resume MC error goes unreported.
Factor the existing intmask programming out of tegra_mc_probe() into
tegra_mc_setup_intmask() and reuse it from the system resume callback
so the mask state is restored on wake.
The tegra-mc platform driver does not register any dev_pm_ops, so the
SoC-specific ->resume() is never invoked (e.g. tegra186_mc_resume) on
system wake. On Tegra186 and later this means MC client Stream-ID
override registers are not reprogrammed, and clients behind the ARM
SMMU fault on the first DMA after resume.
Register a dev_pm_ops on the tegra-mc driver and route the system
resume callback into mc->soc->ops->resume() so the existing SID
restore path runs again on wake.
No suspend callback is needed as the resume path reprograms all MC
state from the static SoC tables, so there is nothing to save.
Fixes: fe3b082a6eb8 ("memory: tegra: Add SID override programming for MC clients") Signed-off-by: Ashish Mhetre <amhetre@nvidia.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Link: https://patch.msgid.link/20260430095202.1167651-3-amhetre@nvidia.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
memory: tegra: Make ->resume() callback return void
tegra186_mc_resume() is the only implementation of the SoC ->resume()
op in struct tegra_mc_ops, and it can never fail as the SID override
loop has no error path. The int return value is therefore not used.
Change the prototype to return void so callers do not need to deal
with a value that is always 0. If a future SoC needs to report
failure from resume, an int return type can be reintroduced then.
As is, the EMC drivers for each 32-bit platform contain almost
identical duplicated code for aggregating rate requests. Move this
code out to a shared tegra-emc-common file to reduce duplication,
and add kerneldoc comments.
Alexander Dahl [Wed, 29 Apr 2026 12:59:30 +0000 (14:59 +0200)]
memory: atmel-ebi: Allow deferred probing
After removing of_platform_default_populate() calls the atmel-ebi driver
was affected by deferred probing. platform_driver_probe() is
incompatible with deferred probing. This led to atmel-ebi driver
eventually not being probed on at91 sam9x60-curiosity and other sam9x60
based boards. Subsequently the nand-controller driver (nand-controller
being a child node of ebi) on that platform was not probed and thus raw
NAND flash was inaccessible, preventing devices to boot with rootfs on
raw NAND flash (e.g. with UBI/UBIFS).
The crag6410 board is one of the last users of the gpio-led driver
with plain gpio numbers. The driver has several ways to pass this
information without using gpio numbers, using a lookup table is
the easiest way.
Ricardo Ribalda [Mon, 4 May 2026 10:55:03 +0000 (10:55 +0000)]
Input: atmel_mxt_ts - set byte_offset as signed
The calculations done to obtain byte_offset can result into a negative
number, fix its type.
This patch fixes the following sparse error:
drivers/input/touchscreen/atmel_mxt_ts.c:1481:44: warning: unsigned value that used to be signed checked against zero?
drivers/input/touchscreen/atmel_mxt_ts.c:1479:49: signed value source
This is a Sonix SN8P2202XG microcontroller with firmware compatible with
the already supported Northstar 04eb:e004, implementing an MCE IR receiver
(PCB seems to be tracked for a transmitter too but missing related parts).
Found in a Skintek SK-CR-IN+IR ( http://www.skintek.it/SK-CR-IN+IR.php )
internal 3.5 inch USB card reader and MCE receiver combo
(implemented by, and wired as, separate USB devices)
PCB marking: AU6475 966816 STIR REV:A02 MCE
Signed-off-by: Riccardo Boninsegna <rboninsegna2@gmail.com> Signed-off-by: Sean Young <sean@mess.org>
Maxwell Doose [Sun, 3 May 2026 20:12:36 +0000 (15:12 -0500)]
rtc: ab8500: replace sprintf() with sysfs_emit()
This patch replaces sprintf() with sysfs_emit() to ensure proper
bounds checking. It also simplifies the return logic by directly
returning the error after logging, instead of logging, calling
sprintf(), then returning.
Lucas Poupeau [Mon, 4 May 2026 15:38:31 +0000 (17:38 +0200)]
ALSA: ac97: clean up whitespace and move EXPORT_SYMBOLs
Clean up an unnecessary space in a conditional statement and move
EXPORT_SYMBOL_GPL(snd_ac97_reset) and EXPORT_SYMBOL(ac97_bus_type)
to immediately follow their respective definitions.
This complies with the Linux kernel coding style convention which
prefers exports to be placed next to the exported symbol for better
code locality and readability.
Nicola Lunghi [Mon, 4 May 2026 14:45:20 +0000 (16:45 +0200)]
ALSA: usb-audio: add clock quirk for Motu 1248
The Motu 1248 (and probably other older Motu AVB interfaces) take more
than 2 seconds to switch clock. During the clock switching process the
device return that the clock is not valid. This is similar to what
already implemented for the Microbook II interface. Add the Motu
1248 usb id to the existing Motu quirk.
Cássio Gabriel [Mon, 4 May 2026 14:08:45 +0000 (11:08 -0300)]
ALSA: usb-audio: midi2: Restart output URBs on resume
USB MIDI 2.0 suspend saves the endpoint running state, clears it and
kills all endpoint URBs. Resume restores the running state, but only
restarts input endpoints.
For a running output endpoint, this leaves the endpoint marked running
with an empty URB queue. Output transfer progress depends on either the
rawmidi trigger path starting the queue or an output completion refilling
it. After suspend there is no completion left, and output data that
remains queued in the raw UMP or legacy rawmidi buffer can stay stalled
until userspace happens to trigger the stream again.
Restore the saved state with atomic accessors, keep input endpoints
restarted as before, and restart output endpoints that were running before
suspend. Clear the saved suspend state after restoring it.
ALSA: hda/realtek: Fix mute and mic-mute LEDs for HP Envy X360 15-fh0xxx
This enables the mute and mic-mute LEDs on the HP Envy X360 15-fh0xxx
2-in-1 laptops.
The quirk 'ALC245_FIXUP_HP_ENVY_X360_15_FH0XXX' has been created and
is now enabled for this device.
This is my first patch, and I'm still getting to grips with the code,
so there's probably a better way to implement this fix.
I apologize for any inconvenience caused by the constant release of
new versions of this patch.
Rong Zhang [Mon, 4 May 2026 11:38:05 +0000 (19:38 +0800)]
ALSA: usb-audio: Add quirk flags for JBL Pebbles
JBL Pebbles is a pair of desktop speakers with UAC interface. Its
Playback and Capture mixers use linear volume with val = 0/999/1 and
0/3996/4. Meanwhile, the reported sample rates are truncated to
multiples of 0x100 (i.e., 44100 => 44032), resulting in noisy kmsg, as a
warning message is printed each time a stream is opened.
Add a quirk table entry matching VID/PID=0x05fc/0x0231 and applying
linear volume and sample rate quirk flags, so that it can work properly.
Also note that the volume control knob on device is an incremental
encoder. It does nothing but sends KEY_VOLUMEUP and KEY_VOLUMEDOWN per
rotation, controlling the UAC Playback volume mixer indirectly. Hence,
the linear volume quirk flags also enable the volume control knob to
function properly.
Quirky device sample:
usb 5-1.1: new full-speed USB device number 12 using xhci_hcd
usb 5-1.1: New USB device found, idVendor=05fc, idProduct=0231, bcdDevice= 1.00
usb 5-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 5-1.1: Product: JBL Pebbles
usb 5-1.1: Manufacturer: Harman International Industries
usb 5-1.1: SerialNumber: 1.0.0
usb-storage 5-1.1:1.0: USB Mass Storage device detected
scsi host0: usb-storage 5-1.1:1.0
usb 5-1.1: Found last interface = 1
usb 5-1.1: 2:1: add audio endpoint 0x5
usb 5-1.1: Creating new data endpoint #5
usb 5-1.1: 2:1 Set sample rate 44100, clock 0
usb 5-1.1: current rate 44032 is different from the runtime rate 44100
usb 5-1.1: 3:1: add audio endpoint 0x84
usb 5-1.1: Creating new data endpoint #84
usb 5-1.1: 3:1 Set sample rate 44100, clock 0
usb 5-1.1: current rate 44032 is different from the runtime rate 44100
usb 5-1.1: [2] FU [PCM Playback Switch] ch = 1, val = 0/1/1
usb 5-1.1: Warning! Unlikely big volume step count (=999), linear volume or wrong cval->res?
usb 5-1.1: [2] FU [PCM Playback Volume] ch = 2, val = 0/999/1
usb 5-1.1: [5] FU [Mic Capture Switch] ch = 1, val = 0/1/1
usb 5-1.1: Warning! Unlikely big volume step count (=999), linear volume or wrong cval->res?
usb 5-1.1: [5] FU [Mic Capture Volume] ch = 2, val = 0/3996/4
input: Harman International Industries JBL Pebbles as /devices/pci0000:00/0000:00:08.3/0000:67:00.3/usb5/5-1/5-1.1/5-1.1:1.4/0003:05FC:0231.0018/input/input55
hid-generic 0003:05FC:0231.0018: input,hidraw2: USB HID v2.01 Device [Harman International Industries JBL Pebbles] on usb-0000:67:00.3-1.1/input4
Cássio Gabriel [Mon, 4 May 2026 00:55:52 +0000 (21:55 -0300)]
ALSA: firewire-tascam: Do not drop unread control events
tscm_hwdep_read_queue() copies as many queued control events as fit in
the userspace buffer. When the buffer is smaller than the current
contiguous queue segment, length is rounded down to the number of bytes
that can be copied.
However, after copying that shortened length, the code advances pull_pos
to the original tail_pos, marking the whole contiguous segment as
consumed. Any events between the copied portion and tail_pos are lost.
Limit tail_pos to the position after the entries actually copied before
updating pull_pos. When the whole segment fits, this is equivalent to the
old tail_pos update; when the buffer is smaller, the remaining events
stay queued for the next read.
Fixes: a8c0d13267a4 ("ALSA: firewire-tascam: notify events of change of state for userspace applications") Cc: stable@vger.kernel.org Suggested-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com> Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Co-developed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20260503-alsa-firewire-tascam-read-queue-v2-1-126c6efd7642@gmail.com
Anton Swart [Sun, 3 May 2026 21:15:17 +0000 (23:15 +0200)]
ALSA: usb-audio: Add quirk flags for AlphaTheta EUPHONIA
The AlphaTheta EUPHONIA (VID 0x2b73, PID 0x0047) is a USB Audio
Class 2 DJ mixer that requires implicit feedback for full-duplex
operation. The capture endpoint (0x83 IN, interface 2) acts as the
implicit feedback source for the playback endpoint (0x03 OUT,
interface 1), and the device firmware does not send isochronous
data on the capture endpoint unless the host is simultaneously
sending data on the playback endpoint, i.e. playback must be
started first.
Without QUIRK_FLAG_PLAYBACK_FIRST the kernel waits for capture URBs
before submitting playback URBs, creating a deadlock: the device
waits for playback data and the host waits for capture data.
Without QUIRK_FLAG_GENERIC_IMPLICIT_FB the kernel does not detect
the implicit feedback relationship between the two interfaces.
The same flag combination is already used for the Behringer UMC202HD,
UMC204HD and UMC404HD (0x1397:0x0507/0x0508/0x0509), which exhibit
the identical implicit-feedback topology.
Tested on Raspberry Pi 5 with kernel 6.12.75; continuous full-duplex
streaming at 96 kHz / 24-bit, zero XRUNs.
Moksh Panicker [Mon, 4 May 2026 14:28:11 +0000 (14:28 +0000)]
staging: rtl8723bs: Remove commented-out dead code in hal_btcoex.c
Remove three commented-out lines of dead code that are never executed.
Keeping commented-out code is discouraged as it clutters the codebase
and serves no purpose.
Nikolay Kulikov [Sat, 2 May 2026 21:55:47 +0000 (00:55 +0300)]
staging: rtl8723bs: move normal_chip field to struct hal_com_data
The 'chip_normal' field is the only remaining member of the 'struct
hal_version' that is used.
Move this field to the hal_com_data struct, where other chip information
is already stored. The order of assignments and reads to this variable
remains unchanged. This is purely a data relocation patch.
Nikolay Kulikov [Sat, 2 May 2026 21:55:44 +0000 (00:55 +0300)]
staging: rtl8723bs: remove unused VendorType from struct hal_version
The 'VendorType' field of the 'struct hal_version' is set once when the
chip is initialized, but no one ever reads this data, so remove it to
eliminate unused code.
Nikolay Kulikov [Sat, 2 May 2026 21:55:43 +0000 (00:55 +0300)]
staging: rtl8723bs: remove unused ICType from struct hal_version
Remove the unused 'ICType' field from the 'struct hal_version', as it
always takes a single value (CHIP_8723B) upon initialization and is
never used in driver.
Nikolay Kulikov [Sat, 2 May 2026 21:55:41 +0000 (00:55 +0300)]
staging: rtl8723bs: replace type and rename the chip_type field
The 'chip_type' field always accepts one value from the
hal_chip_type_e enumeration: TEST_CHIP or NORMAL_CHIP (FPGA is never
used).
Changing this field's type to bool will allow it to be used directly in
conditions without the need for wrapped macros.
The new type requires a corresponding variable name, so rename it to
'chip_normal' to improve code readability.
drm/bridge: tda998x: Return NULL instead of 0 in tda998x_edid_read()
tda998x_edid_read() returns a const struct drm_edid pointer, but when
tda998x_edid_delay_wait() fails (process killed while waiting for the
HPD timeout), the integer literal 0 is returned instead of NULL,
triggering a sparse warning: "Using plain integer as NULL pointer"
Replace 0 with NULL to fix the sparse warning.
Fixes: c76a8be4feec ("drm/bridge: tda998x: Add support for DRM_BRIDGE_ATTACH_NO_CONNECTOR") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202604172257.Imo6GOH9-lkp@intel.com/ Signed-off-by: Kory Maincent (TI) <kory.maincent@bootlin.com> Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Link: https://patch.msgid.link/20260417155446.1068893-1-kory.maincent@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Wrap lines exceeding 100 characters to improve code readability
and conform to the Linux kernel coding style. This fixes the
LONG_LINE issues identified by checkpatch.pl.
Andrei Khomenkov [Mon, 27 Apr 2026 17:58:45 +0000 (20:58 +0300)]
staging: rtl8723bs: fix alignment of continued conditions
Fix alignment of continued conditions to improve code readability
and conform to the Linux kernel coding style. This fixes the
PARENTHESIS_ALIGNMENT issues identified by checkpatch.pl.
Andrei Khomenkov [Mon, 27 Apr 2026 17:58:44 +0000 (20:58 +0300)]
staging: rtl8723bs: move logical operators to previous line
Move logical operators to the previous line to improve code
readability and conform to the Linux kernel coding style.
This fixes the LOGICAL_CONTINUATIONS issues identified by
checkpatch.pl.
Andrei Khomenkov [Mon, 27 Apr 2026 17:58:43 +0000 (20:58 +0300)]
staging: rtl8723bs: remove redundant braces for single-statement block
Remove redundant curly braces for single-statement block to improve
code readability and conform to the Linux kernel coding style.
This fixes the BRACES issue identified by checkpatch.pl.
Andrei Khomenkov [Mon, 27 Apr 2026 17:58:42 +0000 (20:58 +0300)]
staging: rtl8723bs: add spaces around bitwise OR operators
Add spaces around bitwise OR operators to improve code readability
and conform to the Linux kernel coding style. This fixes the
SPACING issues identified by checkpatch.pl.
staging: rtl8723bs: fix block comment alignment in hal_pwr_seq.c
Fix the multi-line block comment at the top of the file to follow
the kernel coding style: each continuation line should start with
' * ' and the closing '*/' should be on its own line without a
preceding blank line.
This fixes the following checkpatch.pl warning:
WARNING: Block comments should align the * on each line
Nikolay Kulikov [Thu, 30 Apr 2026 17:29:06 +0000 (20:29 +0300)]
staging: rtl8723bs: rename DisableInterrupt8723BSdio() to snake_case
Rename function DisableInterrupt8723BSdio() to
rtw_sdio_disable_interrupt() and format its description to comply with
Linux kernel coding style.
Declare this function without 'extern' prototype in the .h file to fix
checkpatch.pl warning.
staging: rtl8723bs: simplify NULL pointer comparisons in rtw_recv.h
Fix checkpatch.pl warnings regarding explicit comparisons to NULL.
The kernel coding style prefers the shorter if (!ptr) idiom over
if (ptr == NULL). Clean up the inline functions in rtw_recv.h to
match this standard.
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