struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/20250612-gpiochip-set-rv-pinctrl-cirrus-v1-2-2d45c1f92557@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/20250612-gpiochip-set-rv-pinctrl-cirrus-v1-1-2d45c1f92557@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add support for the pin controller in ESWIN's EIC7700 SoC,
which supports pin multiplexing, pin configuration,
and rgmii voltage control.
Co-developed-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Yulin Lu <luyulin@eswincomputing.com>
Link: https://lore.kernel.org/20250612105159.1241-1-luyulin@eswincomputing.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Add EIC7700 pinctrl device for all configurable pins.
For the EIC7700 pinctrl registers, each register (32 bits)
controls the characteristics of a single pin.
It supports setting function multiplexing, Schmitt trigger,
drive strength, pull-up/pull-down, and input enable.
Co-developed-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Yulin Lu <luyulin@eswincomputing.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250612104811.1206-1-luyulin@eswincomputing.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
- Move input parameter validation from tg_set_cfs_bandwidth() to the new
outer function tg_set_bandwidth(). The outer function handles parameters
in usecs, validates them and calls tg_set_cfs_bandwidth() which converts
them into nsecs. This matches tg_bandwidth() on the read side.
- max/min_cfs_* consts are now used by tg_set_bandwidth(). Relocate, convert
into usecs and drop "cfs" from the names.
- Reimplement cpu_cfs_{period|quote|burst}_write_*() using tg_bandwidth()
and tg_set_bandwidth() and replace "cfs" in the names with "bw".
- Update cpu_max_write() to use tg_set_bandiwdth(). cpu_period_quota_parse()
is updated to drop nsec conversion accordingly. This aligns the behavior
with cfs_period_quota_print().
- Drop now unused tg_set_cfs_{period|quota|burst}().
- While at it, for consistency, rename default_cfs_period() to
default_bw_period_us() and make it return usecs.
This is to prepare for adding bandwidth control support to sched_ext.
tg_set_bandwidth() will be used as the muxing point. No functional changes
intended.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250614012346.2358261-5-tj@kernel.org
- Update tg_get_cfs_*() to return u64 values. These are now used as the low
level accessors to the fair's bandwidth configuration parameters.
Translation to usecs takes place in these functions.
- Add tg_bandwidth() which reads all three bandwidth parameters using
tg_get_cfs_*().
- Reimplement cgroup interface read functions using tg_bandwidth(). Drop cfs
from the function names.
This is to prepare for adding bandwidth control support to sched_ext.
tg_bandwidth() will be used as the muxing point similar to tg_weight(). No
functional changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250614012346.2358261-4-tj@kernel.org
Collect the getters, relocate the trivial interface file wrappers, and put
all of them in period, quota, burst order to prepare for future changes.
Pure reordering. No functional changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250614012346.2358261-3-tj@kernel.org
Since smp_text_poke_single() does not expect there is another
text_poke request is queued, it can make text_poke_array not
sorted or cause a buffer overflow on the text_poke_array.vec[].
This will cause an Oops in int3 because of bsearch failing;
CPU 0 CPU 1 CPU 2
----- ----- -----
smp_text_poke_batch_add()
smp_text_poke_single() <<-- Adds out of order
<int3>
[Fails o find address
in text_poke_array ]
OOPS!
Or unhandled page fault because of a buffer overflow;
CPU 0 CPU 1
----- -----
smp_text_poke_batch_add() <<+
... |
smp_text_poke_batch_add() <<-- Adds TEXT_POKE_ARRAY_MAX times.
smp_text_poke_single() {
__smp_text_poke_batch_add() <<-- Adds entry at
TEXT_POKE_ARRAY_MAX + 1
smp_text_poke_batch_finish()
[Unhandled page fault because
text_poke_array.nr_entries is
overwritten]
BUG!
}
Use smp_text_poke_batch_add() instead of __smp_text_poke_batch_add()
so that it correctly flush the queue if needed.
Closes: https://lore.kernel.org/all/CA+G9fYsLu0roY3DV=tKyqP7FEKbOEETRvTDhnpPxJGbA=Cg+4w@mail.gmail.com/
Fixes: c8976ade0c ("x86/alternatives: Simplify smp_text_poke_single() by using tp_vec and existing APIs")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Link: https://lkml.kernel.org/r/\ 175020512308.3582717.13631440385506146631.stgit@mhiramat.tok.corp.google.com
max_cfs_quota_period is defined in core.c but has a declaration in fair.c.
Move the declaration to kernel/sched/sched.h. Also, move
default_cfs_period() from fair.c to sched.h. No functional changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250614012346.2358261-2-tj@kernel.org
On some platforms, the UFS-reset pin has no interrupt logic in TLMM but
is nevertheless registered as a GPIO in the kernel. This enables the
user-space to trigger a BUG() in the pinctrl-msm driver by running, for
example: `gpiomon -c 0 113` on RB2.
The exact culprit is requesting pins whose intr_detection_width setting
is not 1 or 2 for interrupts. This hits a BUG() in
msm_gpio_irq_set_type(). Potentially crashing the kernel due to an
invalid request from user-space is not optimal, so let's go through the
pins and mark those that would fail the check as invalid for the irq chip
as we should not even register them as available irqs.
This function can be extended if we determine that there are more
corner-cases like this.
Fixes: f365be0925 ("pinctrl: Add Qualcomm TLMM driver")
Cc: stable@vger.kernel.org
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/20250612091448.41546-1-brgl@bgdev.pl
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
irq_domain_create_simple() takes fwnode as the first argument. It can be
extracted from the struct device using dev_fwnode() helper instead of
using of_node with of_fwnode_handle().
So use the dev_fwnode() helper.
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Acked-by: Chen-Yu Tsai <wens@sie.org>
Link: https://lore.kernel.org/20250611104348.192092-17-jirislaby@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The local static 'struct pinctrl_desc' is not modified, so can be made
const for code safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-17-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The local static 'struct pinctrl_desc' is not modified, so can be made
const for code safety.
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Hal Feng <hal.feng@starfivetech.com>
Acked-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-16-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The local static 'struct pinctrl_desc' is not modified, so can be made
const for code safety after moving .pins and .npins assignment to
definition.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-15-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Assign 'struct pinctrl_desc' .pins and .npins members in definition to
make clear that number of pins is fixed and have less code in the probe.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-14-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Assign 'struct pinctrl_desc' .pins and .npins members in definition to
make clear that number of pins is fixed and have less code in the probe.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-13-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Assign 'struct pinctrl_desc' .pins, .npins and other members in
definition to make clear that number of pins is fixed and have less code
in the probe.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-12-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Assign 'struct pinctrl_desc' .pins and .npins members in definition to
make clear that number of pins is fixed and have less code in the probe.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-11-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Assign 'struct pinctrl_desc' .npins member in definition to make clear
that number of pins is fixed and have less code in the probe.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-10-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Assign 'struct pinctrl_desc' .npins member in definition to make clear
that number of pins is fixed and have less code in the probe.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-9-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Assign 'struct pinctrl_desc' .npins member in definition to make clear
that number of pins is fixed and have less code in the probe.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-8-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The local static 'struct pinctrl_desc' is not modified, so can be made
const for code safety.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-7-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The local static 'struct pinctrl_desc' is not modified, so can be made
const for code safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: J. Neuschäfer <j.ne@posteo.net>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-6-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The local static 'struct pinctrl_desc' is not modified, so can be made
const for code safety.
Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-5-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Pin controller core code only stores the pointer to
'struct pinctrl_desc' and does not modify it anywhere. The pointer can
be changed to pointer to const which makes the code safer, explicit and
later allows constifying 'pinctrl_desc' allocations in individual
drivers.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-4-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Internal functions obtaining pointers to 'struct pinctrl_desc' do not
modify the contents so they can be made pointers to const. This makes
code safer, explicit and later allows constifying 'pinctrl_desc' in
pinctrl core code.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-3-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Pinctrl drivers for K210, TB10X and ZYNQ do not reference any machine
headers, thus can be compile tested for increased build coverage.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-2-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Always descent to drivers/pinctrl/starfive/ because limiting it with
SOC_STARFIVE is redundant since its Makefile doesn't build anything if
no Starfive-specific pin control Kconfig options are enabled. This
allows compile testing on other architectures with allyesconfig.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Acked-by: Hal Feng <hal.feng@starfivetech.com>
Link: https://lore.kernel.org/20250611-pinctrl-const-desc-v2-1-b11c1d650384@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
If allocation of the 'imu' fails, then the existing pages aren't
unpinned in the error path. This is mostly a theoretical issue,
requiring fault injection to hit.
Move unpin_user_pages() to unified error handling to fix the page leak
issue.
Fixes: d8c2237d0a ("io_uring: add io_pin_pages() helper")
Signed-off-by: Penglei Jiang <superman.xpt@gmail.com>
Link: https://lore.kernel.org/r/20250617165644.79165-1-superman.xpt@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The changes to kernel/vmcore_info.c were sadly not reflected in the
documentation. Rectify that for both these flags as well as adding
PAGE_UNACCEPTED_MAPCOUNT_VALUE.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Harry Yoo <harry.yoo@oracle.com>
Link: https://patch.msgid.link/20250611155916.2579160-8-willy@infradead.org
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
We don't have much real internal documentation to extract yet, but
let's make sure that what we do have is available.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Harry Yoo <harry.yoo@oracle.com>
Link: https://patch.msgid.link/20250611155916.2579160-7-willy@infradead.org
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
The kerneldoc comment for krealloc() contains an unmarked literal block,
leading to these warnings in the docs build:
./mm/slub.c:4936: WARNING: Block quote ends without a blank line; unexpected unindent. [docutils]
./mm/slub.c:4936: ERROR: Undefined substitution referenced: "--------". [docutils]
Mark up and indent the block properly to bring a bit of peace to our build
logs.
Fixes: 489a744e5f (mm: krealloc: clarify valid usage of __GFP_ZERO)
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://patch.msgid.link/20250611155916.2579160-6-willy@infradead.org
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Give slab its own name for this flag. Move the implementation from
slab.h to slub.c since it's only used inside slub.c.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Harry Yoo <harry.yoo@oracle.com>
Link: https://patch.msgid.link/20250611155916.2579160-5-willy@infradead.org
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Give slab its own name for this flag. Keep the PG_workingset alias
information in one place.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Harry Yoo <harry.yoo@oracle.com>
Link: https://patch.msgid.link/20250611155916.2579160-4-willy@infradead.org
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Slab has its own reasons for using flag bits; they aren't just
the page bits. Maybe this won't be the ultimate solution, but
we should be clear that these bits are in use.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://patch.msgid.link/20250611155916.2579160-3-willy@infradead.org
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This section is supposed to be for internal documentation, while the
document is advice for sysadmins. Move it to the appropriate place.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Harry Yoo <harry.yoo@oracle.com>
Link: https://patch.msgid.link/20250611155916.2579160-2-willy@infradead.org
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
In preparation for switching to the architected timer as the primary
clockevents device, mark the cpuidle nodes with the 'local-timer-stop'
property to indicate that an alternative clockevents device must be
used for waking up from the "c2" idle state.
Signed-off-by: Will Deacon <willdeacon@google.com>
[Original commit from https://android.googlesource.com/kernel/gs/+/a896fd98638047989513d05556faebd28a62b27c]
Signed-off-by: Will McVicker <willmcvicker@google.com>
Reviewed-by: Youngmin Nam <youngmin.nam@samsung.com>
Tested-by: Youngmin Nam <youngmin.nam@samsung.com>
Fixes: ea89fdf24f ("arm64: dts: exynos: google: Add initial Google gs101 SoC support")
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Tested-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://lore.kernel.org/r/20250611-gs101-cpuidle-v2-1-4fa811ec404d@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
It is possible that the PL061 doesn't have any interrupt connected and
can't be an interrupt provider, so drop the interrupt properties as
required.
The LG LG131x SoCs are one example of this.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250609220900.3035642-1-robh@kernel.org
[Bartosz: g/pl011/pl061/]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
The gpio-mlxbf3 driver interfaces with two GPIO controllers,
device instance 0 and 1. There is a single IRQ resource shared
between the two controllers, and it is found in the ACPI table for
device instance 0. The driver should not attempt to get an IRQ
resource when probing device instance 1, otherwise the following
error is logged:
mlxbf3_gpio MLNXBF33:01: error -ENXIO: IRQ index 0 not found
Signed-off-by: David Thompson <davthompson@nvidia.com>
Reviewed-by: Shravan Kumar Ramani <shravankr@nvidia.com>
Fixes: cd33f216d2 ("gpio: mlxbf3: Add gpio driver support")
Link: https://lore.kernel.org/r/20250613163443.1065217-1-davthompson@nvidia.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Gustavo Luiz Duarte says:
====================
netconsole: Add support for msgid in sysdata
This patch series introduces a new feature to netconsole which allows
appending a message ID to the userdata dictionary.
If the msgid feature is enabled, the message ID is built from a per-target 32
bit counter that is incremented and appended to every message sent to the target.
Example::
echo 1 > "/sys/kernel/config/netconsole/cmdline0/userdata/msgid_enabled"
echo "This is message #1" > /dev/kmsg
echo "This is message #2" > /dev/kmsg
13,434,54928466,-;This is message #1
msgid=1
13,435,54934019,-;This is message #2
msgid=2
This feature can be used by the target to detect if messages were dropped or
reordered before reaching the target. This allows system administrators to
assess the reliability of their netconsole pipeline and detect loss of messages
due to network contention or temporary unavailability.
---
Changes in v3:
- Add kdoc documentation for msgcounter.
- Link to v2: https://lore.kernel.org/r/20250612-netconsole-msgid-v2-0-d4c1abc84bac@gmail.com
Changes in v2:
- Use wrapping_assign_add() to avoid warnings in UBSAN and friends.
- Improve documentation to clarify wrapping and distinguish msgid from sequnum.
- Rebase and fix conflict in prepare_extradata().
- Link to v1: https://lore.kernel.org/r/20250611-netconsole-msgid-v1-0-1784a51feb1e@gmail.com
====================
Suggested-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove comment for reorder_work which no longer exists.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 71203f68c7 ("padata: Fix pd UAF once and for all")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add documentation explaining the msgid feature in netconsole.
This feature appends unique id to the userdata dictionary. The message
ID is populated from a per-target 32 bit counter which is incremented
for each message sent to the target. This allows a target to detect if
messages are dropped before reaching the target.
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Extend the self-tests to cover the 'msgid' feature in sysdata.
Verify that msgid is appended to the message when the feature is enabled
and that it is not appended when the feature is disabled.
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add msgcounter to the netconsole_target struct to generate message IDs.
If the msgid_enabled attribute is true, increment msgcounter and append
msgid=<msgcounter> to sysdata buffer before sending the message.
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Implement the _show and _store functions for the msgid_enabled configfs
attribute under userdata.
Set the sysdata_fields bit accordingly.
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This adds a new sysdata field to enable assigning a per-target unique id
to each message sent to that target. This id can later be appended as
part of sysdata, allowing targets to detect dropped netconsole messages.
Update count_extradata_entries() to take the new field into account.
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Gustavo Luiz Duarte <gustavold@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Universal Serial Interface (USI) supports three serial protocol
like uart, i2c and spi. ExynosAutov920 has 18 instances of USI.
Add spi nodes for all the instances.
Signed-off-by: Faraz Ata <faraz.ata@samsung.com>
Link: https://lore.kernel.org/r/20250613062208.978641-1-faraz.ata@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Document the RSVD (Reserved) mux function, used to reserve pins
for a coprocessor not running Linux.
Signed-off-by: Fabien Dessenne <fabien.dessenne@foss.st.com>
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/20250610152309.299438-3-antonio.borneo@foss.st.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
When a pin is assigned to a coprocessor not running Linux, the pin
should be flagged in the DT as reserved and not usable by Linux.
Add pin configuration RSVD (Reserved) and instrument the driver to
not update the mux setting.
Signed-off-by: Fabien Dessenne <fabien.dessenne@foss.st.com>
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
Link: https://lore.kernel.org/20250610152309.299438-2-antonio.borneo@foss.st.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
