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git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux
Pull liveupdate updates from Mike Rapoport:
- Several small fixes to KHO and LiveUpdate selftest
- A series that renames "KHO scratch" to "KHO bootmem" because this
memory is way more important in kexec'ed kernels rather than in the
original cold boot kernel and the new name reflects it
* tag 'liveupdate-v7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux:
kho: do not reserve empty per-node bootmem areas
selftests/liveupdate: Prefer KVM and HVF over TCG in vmtest.sh
kho: rename kho_scratch= commandline parameter to kho_bootmem=
kho: rename KHO scratch to KHO bootmem
memblock: rename KHO_SCRATCH to KHO_NOPRSRV
memblock: get rid of CONFIG_MEMBLOCK_KHO_SCRATCH
kho: docs: fix scratch_phys debugfs cross-reference
kho: do not reserve scratch memory in the kdump kernel
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
- A bunch of improvements in dt-check-style. Fix various bindings based
on these additional checks.
- Convert hisilicon,hix5hd2-ir, hisilicon,hi6220-ade,
hisilicon,hi6220-dsi, hisilicon,hip05-sas-v1, MediaTek RT5650 codecs,
mediatek,g3dsys, mediatek,mt2701-scpsys, ti,omap-mpu, and
ti,omap-ocp2scp to DT schema format
- Add schemas for ST STM32MP2 DWC3 xHCI USB, ST STM32MP25 USB2-FEMTO
PHY, spacemit,k1-gpu and spacemit,k3-gpu, HiSilicon local bus,
HiSilicon HIP05 CPLD, SDMC DM2016, and QCom SM7250 and Kuno PDC
- Various binding updates to fix schema warnings in .dts files
- Drop obsolete .txt bindings for STM32(MP1) RCC, VExpress hwmon and
regulator, and mailbox.txt
- Remove the unused of_overlay_remove_all() function
- Fixes for of_check_msi_parent()
- Add "i2c-parent" tracking to fw_devlink
* tag 'devicetree-for-7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (72 commits)
dt-bindings: usb: dwc3: Document ST STM32MP2 DWC3 xHCI USB controller
dt-bindings: iommu: Describe MT8195 infra IRQs
dt-bindings: clock: mediatek: Add MT8516 fallbacks
dt-bindings: media: Convert hisilicon,hix5hd2-ir to DT schema
dt-bindings: display: Convert hisilicon,hi6220-ade to DT schema
dt-bindings: display: Convert hisilicon,hi6220-dsi to DT schema
dt-bindings: phy: Document ST STM32MP25 USB2-FEMTO PHY
of: overlay: remove unused of_overlay_remove_all()
dt-bindings: power: Convert mediatek,mt2701-scpsys to DT schema
dt-bindings: bus: Add HiSilicon local bus
dt-bindings: gpu: img,powervr-rogue: add spacemit,k1-gpu and spacemit,k3-gpu
dt-bindings: interrupt-controller: qcom,pdc: Document SM7250 PDC
dt-bindings: vendor-prefixes: add Ambarella
dt-bindings: reset: Drop obsolete STM32(MP1) RCC bindings
dt-bindings: arm: keystone: ti,sci: Correct reg and mboxes constraints
dt-bindings: ASoC: Convert MediaTek RT5650 codecs bindings to DT schema
dt-bindings: scsi: Convert hisilicon,hip05-sas-v1 to DT schema
of/irq: Stop the MSI walk at the first msi-parent
of/irq: Fix device node refcount leak in of_check_msi_parent()
dt-bindings: display: faraday,tve200: Use a level-high interrupt
...
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of_overlay_remove_all() has no in-tree callers.
It is also subtly broken. It passes &ovcs->id to of_overlay_remove(),
which zeroes *ovcs_id once the changeset is reverted, before calling
free_overlay_changeset(). Through the aliased pointer that zeroes
ovcs->id itself, so free_overlay_changeset()'s "ovcs->id > 0" guard is
false and both idr_remove() and list_del() are skipped: the
overlay_changeset is kfree()d while still linked in ovcs_list and
registered in ovcs_idr.
Rather than fix a helper nobody calls, remove it, along with its
!CONFIG_OF_OVERLAY stub and the paragraph documenting it in
overlay-notes.rst and in the zh_CN translation.
ovcs_list itself stays: overlay_removal_is_ok() still walks it to check
that a changeset is topmost.
Reported-by: Sashiko AI <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/20260901014554.83A8D1F000E9@smtp.kernel.org
Suggested-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/all/20260928182658.GA185307-robh@kernel.org/
Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Link: https://patch.msgid.link/20261014-b4-of-overlay-remove-all-fix-v2-1-cf5ea2cc9dc3@nexthop.ai
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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The term "KHO scratch" is vague and overloaded.
For one, it does not accurately describe what the memory is for. From
KHO's perspective, it is memory passed by the previous kernel that is
guaranteed to have no allocations and hence it is safe to allocate from.
For another, the term is overloaded. KHO also knows to discover other
ranges of memory that don't have any preservations and are safe to
allocate from. This is done by kho_extend_scratch(). These areas, while
called "scratch", are completely different from the chunk of memory
passed by the previous kernel for early boot allocations.
Rename "KHO scratch" to "KHO boot memory", or "KHO bootmem" in short.
Update all function names, variable names, comments, and documentation
to use this.
Call the discovered areas "noprsrv", matching what memblock would see
them as. Rename kho_extend_scratch() to reflect this.
This patch largely has no functional changes. The only functional
changes are renames of debugfs files from "scratch_phys" and
"scratch_len" to "bootmem_phys" and "bootmem_len" respectively.
Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Link: https://patch.msgid.link/20260922041321.233986-4-pratyush@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Fix another case of refcount leaks in of_irq_init()
- Avoid refcount leak in coreboot node check
- Fix overlay handling of a root node target path
- Various error path fixes in the overlay code
* tag 'devicetree-fixes-for-7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of/irq: Fix remaining refcount leaks in of_irq_init()
of: Put coreboot node after compatibility check
of/overlay: don't create "//" paths for fragments targeting the root
of/overlay: don't leak fragment references when changeset init fails
of/overlay: only treat a positive changeset id as registered
of/overlay: put property on deadprops only after changeset add succeeds
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Successfully initialized controllers are moved to intc_parent_list,
but the final cleanup only frees the descriptors. The device node
references taken with of_node_get() and the interrupt parent
references are therefore leaked on the normal return path. Drop both
before kfree(), as the intc_desc_list cleanup already does.
Fixes: 8363ccb917c6 ("of/irq: add missing of_node_put")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20260917124247.2151674-1-vulab@iscas.ac.cn
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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of_find_compatible_node() returns a referenced device node, but
EXCLUDED_DEFAULT_CELLS_PLATFORMS used the result only as a boolean and
discarded the reference. This leaked a reference each time the
address-cells or size-cells warning condition was evaluated on a
coreboot system.
Use a helper that checks for the coreboot node with a scoped reference,
so the reference is dropped once the check is done.
Fixes: 8600058ba28a7 ("of: Add coreboot firmware to excluded default cells list")
Signed-off-by: Yuho Choi <oss.patchbox@gmail.com>
Link: https://patch.msgid.link/20260924011358.734722-1-oss.patchbox@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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of_check_msi_parent() returns -EINVAL both when the msi-parent names a
controller other than the one the caller filters on and when #msi-cells
isn't 0, so of_msi_xlate() can't tell the two apart and carries on up
the hierarchy. An ancestor's msi-map then maps the device onto a
controller its own node didn't name.
Hand the parsed specifier back to of_msi_xlate(), which owns the
reference as it already does on the msi-map path, and end the walk at
any node that declares an msi-parent.
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260904074800.875391F00A3F@smtp.kernel.org/
Suggested-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Link: https://lore.kernel.org/all/apqnaNmeuUjfC8Ng@red-moon/
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20260907112944.313618-3-fuad.tabba@linux.dev
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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of_msi_xlate() documents @msi_np as a filter when it points at a node on
entry, handing back a reference only when it points at NULL. The msi-map
branch does that. of_check_msi_parent() keeps the reference from the 1:1
msi-parent match either way.
pci_msi_domain_get_msi_rid() is the only caller that passes a node in,
from irq_domain_get_of_node(), and it puts nothing, so a 1:1 match there
leaks the MSI controller node.
Fixes: 119aaeed0b67 ("of/irq: Add msi-parent check to of_msi_xlate()")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260826113604.010C01F000E9@smtp.kernel.org/
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://lore.kernel.org/all/20260826113604.010C01F000E9@smtp.kernel.org/
Link: https://patch.msgid.link/20260907112944.313618-2-fuad.tabba@linux.dev
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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dup_and_fixup_symbol_prop() rewrites a symbol value by replacing its
"/fragment/__overlay__" prefix with the fragment's target path. When
the fragment targets the root node the target path is "/" and the
result starts with "//", which __of_find_node_by_full_path() cannot
resolve: symbols pointing into such fragments silently stop
resolving.
Drop the target path when it is the root and the tail is non-empty. A
value naming the fragment root itself (empty tail) keeps the "/".
Fixes: d1651b03c2df ("of: overlay: add overlay symbols to live device tree")
Assisted-by: Claude:claude-fable-5 [Claude Code]
Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Link: https://patch.msgid.link/20260831-nh-of-alias-overlay-v7-7-02754604805a@nexthop.ai
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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init_overlay_changeset() stores the number of initialized fragments
in ovcs->count only on full success. When find_target() or the
__symbols__ lookup fails partway through, the target and overlay
references taken for the fragments initialized so far are never
dropped: free_overlay_changeset() bounds its cleanup loop by
ovcs->count, which is still 0.
Store the running count on the error path so free_overlay_changeset()
puts whatever was set up. The store is guarded by ovcs->fragments
because on the allocation-failure path cnt still holds the counting
pass total while there is no fragments array; everywhere else cnt
only counts fully-initialized fragments.
Reported-by: Sashiko AI <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/20260805204009.CF3891F000E9@smtp.kernel.org
Fixes: 61b4de4e0b38 ("of: overlay: minor restructuring")
Assisted-by: Claude:claude-opus-4-8 [Claude Code]
Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Link: https://patch.msgid.link/20260831-nh-of-alias-overlay-v7-6-02754604805a@nexthop.ai
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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of_overlay_fdt_apply() stores the idr_alloc() return value in
ovcs->id before checking it. On failure the stored id is negative,
free_overlay_changeset()'s "if (ovcs->id)" check passes, idr_remove()
is called with a negative id and list_del() runs on ovcs->ovcs_list,
which is not initialized until after the id allocation. An allocation
failure at that point dereferences NULL.
Make free_overlay_changeset() treat only a strict-positive id as
registered. The rest of the function already copes with a
partially-initialized ovcs, so the error path stays a plain
goto err_free_ovcs.
Fixes: 61b4de4e0b38 ("of: overlay: minor restructuring")
Cc: stable@vger.kernel.org
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Assisted-by: Claude:claude-fable-5 [Claude Code]
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Link: https://patch.msgid.link/20260831-nh-of-alias-overlay-v7-5-02754604805a@nexthop.ai
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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add_changeset_property() links a new property of a not-yet-live
target node into the node's deadprops list before handing it to
of_changeset_add_property(). If that fails, the error path frees the
property but leaves the freed pointer linked in deadprops, and
of_node_release() frees it a second time when the aborted overlay's
node is released.
Record the changeset entry first and link the property into deadprops
only on success. of_changeset_add_property() never looks at the
node's property lists, so the order of the two steps is otherwise
immaterial, and the error path frees a property that nothing
references.
Fixes: f96278810150 ("of: overlay: set node fields from properties when add new overlay node")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-fable-5 [Claude Code]
Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Link: https://patch.msgid.link/20260831-nh-of-alias-overlay-v7-4-02754604805a@nexthop.ai
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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Platform-device i2c muxes (i2c-mux-reg, i2c-mux-gpio, ...) reference
the bus they multiplex with an i2c-parent phandle and hold a reference
on that adapter from probe until remove. Unlike muxes that are clients
on the parent bus, they live outside the adapter's device hierarchy,
so nothing orders their teardown against it: if the adapter's device
is unbound first — e.g. while reverting a device-tree overlay whose
changeset attached the mux nodes before the controller nodes —
i2c_del_adapter() blocks forever in
wait_for_completion(&adap->dev_released), waiting for a reference that
is only dropped later in the same teardown sequence.
Teach fw_devlink about i2c-parent so the core creates the
corresponding device links: consumers are unbound before the parent
adapter's device, and probe ordering no longer needs -EPROBE_DEFER.
A plain DEFINE_SIMPLE_PROP() cannot be used because the property has
two incompatible layouts: the i2c mux bindings hold a list of bare
phandles (i2c-demux-pinctrl takes several), while toshiba,tc9563 holds
a single phandle followed by an i2c slave-address cell. The two forms
are indistinguishable in the flattened tree, and a 0-cell parse of the
tc9563 form would read the slave address as a phandle, linking the
consumer to whatever node happens to carry that phandle value. Use a
custom parser that only takes entry 0 for toshiba,tc9563 nodes.
Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Link: https://patch.msgid.link/20260815-b4-of-property-add-i2c-parent-v3-1-c22588b6482a@nexthop.ai
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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The comment above the count_cells() call reads "Cound address cells"
where it should read "Count address cells", which is what the call below
it does.
Comment only, no functional change.
Assisted-by: Cursor:claude-opus-5
Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com>
Link: https://patch.msgid.link/20260909123501.215711-1-hemanth.selam@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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When assigning a pointer or integral value to a boolean, there is no
need to insert a double logical inversion, as the assignment already
takes care of the conversion.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/d32521ecddc0df9de1c5f21edb7935f7f543590f.1788426412.git.geert+renesas@glider.be
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Fix possible out-of-bounds access in of_alias_scan()
- Fix refcount leak in of_irq_get_affinity()
- Add Qualcomm SPMI PMIC haptics input which is already referenced
* tag 'devicetree-fixes-for-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: fix out-of-bounds read in of_alias_scan() stem parser
of/irq: Fix device node refcount leak in of_irq_get_affinity()
dt-bindings: input: Add Qualcomm SPMI PMIC haptics
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The stem parser tests isdigit(*(end - 1)) before checking end > start
and so reads one byte before the property name when the name is empty
or all digits. Check the bound first.
Fixes: 611cad720148 ("dt: add of_alias_scan and of_alias_get_id")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-fable-5 [Claude Code]
Signed-off-by: Abdurrahman Hussain <abdurrahman@nexthop.ai>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260805-nh-of-alias-overlay-v6-1-74f21d440819@nexthop.ai
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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of_irq_parse_one() raises the refcount of the interrupt controller node
on success, and of_irq_get_affinity() returns without putting it, so
every call past the parse leaks one reference. It is reached from
platform_get_irq_affinity(), used by arm_pmu, arm_spe_pmu and
coresight-trbe.
Put it once irq_populate_fwspec_info() has run: no in-tree
->get_fwspec_info() returns a mask that lives in the node.
Fixes: 5404f5c06dd4 ("of/irq: Add interrupt affinity reporting interface")
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Link: https://patch.msgid.link/20260826112234.1033974-1-fuad.tabba@linux.dev
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"container_of:
- Apply typeof_member(), remove the local __mptr variable to
eliminate variable shadowing warnings on nested container_of()
calls, and remove unnecessary parentheses
core:
- Add driver name to probe debug print for initcall_debug
- Avoid repeatedly printing the same 'Fixed dependency cycle' log
- Unwind device_add() on attribute creation failure in
attribute_container_add_class_device()
- Remove statistics group if encryption group creation fails in
transport_add_class_device()
debugfs:
- Fix lockdown check for mmap_prepare()
- Warn if file creation failed due to uninitialized debugfs
device property:
- Implement fw_devlink support for software nodes by adding
software_node_add_links(), which creates fwnode links from
DEV_PROP_REF properties to enable automatic probe ordering. Add
kunit-managed fwnode helpers and test coverage
- Fix infinite loop in fwnode_for_each_child_node() when the
secondary fwnode has more than one child. Add test cases
- Fix out-of-bounds access in software_node_get_reference_args() when
called with index -1 (UINT_MAX)
- Refactor to use RAII approach with __free()
- Add Bartosz Golaszewski as software node reviewer
firmware loader:
- Fix race where a sysfs fallback request can complete before being
queued as pending, leading to a use-after-free on the next fallback
request
- Reject 0-size built-in firmware and fail the build on empty
firmware files in CONFIG_EXTRA_FIRMWARE
kobject:
- Provide __KOBJ_ATTR() and __KOBJ_ATTR_RO/WO() initialization macros
and allow the constification of kobject attributes, enabling them
to reside in read-only memory
platform:
- Provide platform_device_set_of_node(), platform_device_set_fwnode(),
and platform_device_set_of_node_from_dev() helpers that encapsulate
firmware node reference counting for dynamically allocated platform
devices
Convert all in-tree users that manually assigned dev.of_node or
dev.fwnode, fixing a pre-existing refcount bug in powermac. Switch
to counting references of all firmware node types, not only OF
nodes
- Unify the release path for dynamically allocated platform devices
by removing platform_device_release_full(). Amend the fwnode setter
API contract to warn if a primary software node is overwritten. Add
KUnit tests for correct software node removal on device
unregistration
Rust:
- Auxiliary:
- Add registration_data_with() closure-based API for invariant
ForLt types
- Debugfs:
- Migrate BinaryWriter and BinaryReaderMut trait requirements
from kernel::transmute traits to zerocopy traits
- Device:
- Add BoundInternal device context and InternalBoundContext trait
for bus abstractions that need internal access to a bound
device.
- Make the lifetime on Core and CoreInternal invariant to prevent
coercion to shorter lifetimes
- Devres:
- Fix race between concurrent revokers where the losing revoker
could return before the winning revoker finished dropping the
inner data, causing use-after-free.
- Ensure revocation is complete before the device finishes
unbinding by making the synchronization bidirectional.
- Add DevresLt<F: ForLt>, a wrapper around Devres that shortens
'static back to the caller's borrow scope. Implement ForLt and
CovariantForLt for Bar, IoMem, and ExclusiveIoMem
- Driver:
- Switch from index-based to pointer-based device ID info lookup,
storing static references in driver_data. Centralize device ID
handling in device_id.rs, removing the open-coded ACPI/OF
matching logic and duplicate ID table from driver.rs
- I/O:
- Make I/O regions typed (with a dynamically-sized Region type
for the existing untyped case), create view types representing
subregions of a mapped I/O region, and add io_project!() for
safely creating subviews.
- Split Io into a base trait (IoBase) and an extension trait (Io)
with a blanket implementation, preventing implementers from
overriding provided methods that unsafe code relies on.
- Add a SysMem backend for shared system memory with volatile
access, and make Coherent implement Io via an I/O view type.
Add IoSysMap as sum type of Mmio and SysMem. Add copying
methods (memcpy_{from,to}io()) and read_val()/write_val() for
typed access.
- Replace dma_read!()/dma_write!() with io_read!()/io_write!()
for primitives and copying methods for aggregates; drop the old
macros. Convert nova-core to use I/O projection.
- Fix internal shortcut rule dispatch in the register!() macro,
remove unused rule arguments, and use path fragments for alias
destinations
- IRQ:
- Make irq::Registration compatible with lifetime-bound drivers
by removing the 'static bound on Handler/ThreadedHandler and
replacing Devres<RegistrationInner> with direct
request_irq()/free_irq() calls. Handlers can now directly own
lifetime-bound device resources
- PCI:
- Convert IrqVectorRegistration to a lifetime-annotated owning
type, giving drivers explicit control over the allocation
lifetime. IrqVector embeds a resolved IrqRequest, making the
conversion infallible. Remove the redundant
request_irq()/request_threaded_irq() wrappers from pci::Device.
- Add pci_irq_type() C helper and expose it via irq_type() on
IrqVectorRegistration and IrqVector, returning PCI_IRQ_MSIX,
PCI_IRQ_MSI, or PCI_IRQ_INTX.
- Mark pci::Device refcount methods inline
- Serdev:
- Add Rust abstractions for the serial device bus, including
serdev::Driver trait, serdev::Device wrapping struct
serdev_device, and serdev::Adapter implementing
RegistrationOps. Includes a sample driver. Markus Probst takes
over as serdev maintainer for both C and Rust code
- Misc:
- Split ForLt into a base trait (providing the Of<'a> GAT) and an
unsafe CovariantForLt subtrait guaranteeing covariance,
enabling invariant types (e.g. those containing Mutex<&'bound T>)
to participate in the ForLt abstraction.
- Fix Coherent read past EOF returning -ERANGE instead of zero.
- Fix firmware example UB by avoiding null-pointer ARef
misc:
- Avoid iattr allocation in kernfs listxattr by using
kernfs_iattrs_noalloc().
- Unregister SoC bus on early device registration failure.
- Remove unused DMA_FENCE_TRACE Kconfig symbol.
- Fix /sys/module path in comment.
- Refactor ISA bus init to remove nested blocks.
- Remove redundant nodemask clears in numa_init().
- Add kernel-doc for fwnode_operations and sys_soc.h, mark
internal property data as private for kernel-doc, and add
property.h/fwnode.h to driver-api infrastructure docs.
- Add MAINTAINERS entry for sys_soc.h"
* tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (129 commits)
rust: pci: expose the allocated interrupt type
PCI: Add pci_irq_type() to query the allocated interrupt type
rust: pci: remove request_irq() and request_threaded_irq() from Device
rust: pci: resolve IRQ in index() and embed IrqRequest in IrqVector
rust: pci: convert IrqVectorRegistration to a lifetime-managed owning type
kernfs: avoid iattr allocation in listxattr
rust: serdev: use ThisModule::as_ptr() instead of field access
ACPI/IORT: use platform_device_set_fwnode()
ACPI/APMT: use platform_device_set_fwnode()
firmware_loader: do not queue completed sysfs fallback requests
rust: pci: Mark Device refcount methods inline
rust: irq: make Registration compatible with lifetime-bound drivers
rust: net/phy: remove expansion from doc
rust: dma: return zero for Coherent reads past EOF
rust: io: register: use path fragment for alias destination
rust: io: register: remove unused rule arguments
rust: io: register: dispatch shortcut rules internally
MAINTAINERS: add sys_soc.h to DRIVER CORE
rust: debugfs: remove unsafe blocks from traits impl for Vec
rust: debugfs: migrate debugfs traits requirements to zerocopy
...
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
- Add a DT maintainer profile document
- Various dt-check-style improvements
- Add a devres managed reserved memory region init function
- Print node name on any skipped reserved memory regions
- Correctly handle optional argument in
of_parse_phandle_with_args_map()
- Convert ti,keystone-reset, ti,da850-vpif, TI L4 interconnect, TI
SmartReflex, microchip,pic32mzda-dmt, microchip,pic32mzda-wdt, TI
DA8XX MSTPRI bus, and Xen VM bindings to DT schema format
- Add bindings for StarFive JHB100 plic, Allwinner A733 NMI controller,
MediaTek MT8173 GPU, QCom Shikra, Eliza, and Maili cpu-bwmon, and
QCom Shikra SCM firmware
- A couple of syntax fixes found using PoC Rust implementation of
dtschema tools
- Clean-ups for typos, brackets, incorrect "::" usages, and
white-space style
* tag 'devicetree-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (40 commits)
dt-bindings: interconnect: qcom-bwmon: Add Maili cpu-bwmon compatible
dtc: dt-check-style: Simplify setting depth of DtsLine
dtc: dt-check-style: Add missing /dts-v1/ to few test cases
dt-bindings: power: reset: ti,keystone-reset: Convert to DT schema
media: dt-bindings: ti,da850-vpif: Convert to dt-schema
dt-bindings: devfreq: samsung,exynos-ppmu: Use standard regex syntax
dt-bindings: interrupt-controller: mediatek,mt6577-sysirq: Drop invalid JSON pointer
dt-bindings: arm: omap: Convert L4 interconnect to DT schema
dt-bindings: power: Convert TI SmartReflex to DT schema
of: reserved_mem: Introduce devres-managed initialization function
dt-bindings: interrupt-controller: Add StarFive JHB100 plic
dt-bindings: irq: sun7i-nmi: Document the Allwinner A733 NMI controller
dt-bindings: Correct white-space style
dt-bindings: fix typos and brackets
docs: dt: submitting-patches: Mention expectation about dt-check-style
docs: dt: maintainer: Add Devicetree and OF maintainer profile document
docs: dt: writing-schema: Extend expectations about example part of binding
dt-bindings: gpu: powervr-rogue: Add MediaTek MT8173 GPU
of: base: Handle optional argument in of_parse_phandle_with_args_map()
dt-bindings: update Sudeep Holla's email address
...
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain updates from Ulf Hansson:
- amlogic: Add support for A9 power domains
- bcm: Raise ASB poll timeout to 100us for bcm2835-power
- imx: Allow building power domain drivers as a modules
- mediatek:
- Add support for the MT6858 power domains
- Add support for the MT8196 HFRP DirectCTL power domains
- qcom:
- Add support for RPMh power domains for Maili
- Skip retention by default for rpmhpd
- renesas: Add support for R-Car X5H Module Controller
- rockchip: Add a regulator to the RK3568 NPU power domain
- tegra: Add support for multi-socket platforms
* tag 'pmdomain-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (24 commits)
pmdomain: renesas: Add R-Car X5H MDLC driver
dt-bindings: power: Document Renesas R-Car X5H Module Controller
pmdomain: amlogic: Add support for A9 power domains controller
dt-bindings: power: Add Amlogic A9 power domains
clk: imx: imx8qxp: add soft dependency on SCU power domain driver
pmdomain: imx: scu-pd: allow building as a module
of: export of_stdout symbol
pmdomain: imx8m{p,}-blk-ctrl: Add MODULE_DESCRIPTION
pmdomain: mediatek: Add support for MT6858 SoC
pmdomain: mediatek: Add support for secure modem power domain control
dt-bindings: power: Add MediaTek MT6858 power domain controller
pmdomain: rockchip: Add a regulator to the RK3568 NPU power domain
pmdomain: imx: Make IMX8M/IMX9 BLK_CTRL tristate
dt-bindings: power: qcom,rpmpd: document RPMh power domain for Maili
pmdomain: tegra: Add support for multi-socket platforms
pmdomain: bcm: bcm2835-power: Raise ASB poll timeout to 100us
pmdomain: mediatek: Add support for MT8196 HFRP DirectCTL domains
pmdomain: mediatek: Add support for Direct CTL simple power sequence
pmdomain: mediatek: Respect PD relationships during error cleanup
dt-bindings: power: mediatek: Add support for MT8196 direct HFRP
...
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git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux
Pull kexec updates from Mike Rapoport:
- Deduplicate crash memory allocation and the exclusion of reserved
crash kernel regions from architecture specific code into a generic
crash_prepare_headers() and enable crashkernel CMA reservation on
arm64 and riscv reservation on arm64 and riscv.
- Skip purgatory checksum verification when the kexec segments cannot
be corrupted by DMA, which saves about 250ms on kexec.
- Replace __ASSEMBLY__ with the compiler provided __ASSEMBLER__ in
include/linux/kexec.h.
- Fix a keyring refcount imbalance in the kdump kernel's dm-crypt key
restore path, which over-dropped the user keyring reference when
more than one key was restored.
* tag 'kexec-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux:
crash_dump: release keyring reference at the correct time
kexec: Replace __ASSEMBLY__ with __ASSEMBLER__ in header file
kexec_file: skip checksum verification when safe
riscv: kexec_file: Add support for crashkernel CMA reservation
arm64: kexec_file: Add support for crashkernel CMA reservation
powerpc/kexec_file: Use crash_exclude_core_ranges() helper
LoongArch: kexec_file: Use crash_prepare_headers() helper to simplify code
riscv: kexec_file: Use crash_prepare_headers() helper to simplify code
x86/crash: Use crash_prepare_headers() helper to simplify code
arm64: kexec_file: Use crash_prepare_headers() helper to simplify code
crash: Add crash_prepare_headers() to exclude crash kernel memory
powerpc/crash: sort crash memory ranges before preparing elfcorehdr
riscv: kexec_file: Fix crashk_low_res not exclude bug
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git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock updates from Mike Rapoport:
"Non-urgent fixes:
- Fix calculation of node_spanned_pages when running
with 'kernelcore=mirror'
- Properly handle failure to allocate per_cpu_nodestats
in free_area_init_core_hotplug()
- Fix deferred initialization of the memory map for
configurations where node's RAM end is not aligned
on PAGES_PER_SECTION
Cleanups:
- Remove redundant pageblock_align() call in free_unused_memmap()
- Remove unnecessary invalid range checks in users of memblock
iterators. Some users of for_each_mem_range() and
for_each_mem_pfn_range() verify that start < end for each range.
This is redundant because memblock iterators guarantee to never
return an invalid range
- Stop overlapping zones with 'kernelcore=mirror' and align behaviour
of 'kernelcore=mirror' with other variants of kernelcore and
movablecore
- Remove redundant updates of numa_nodes_parsed mask in the callers
of numa_add_memblk(), the latter always updates the mask anyway
- Remove unnecessary initialization of pgdat->per_cpu_nodestats to
NULL, the variable is reset to the actual value a few lines below"
* tag 'memblock-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock: (25 commits)
mm/mm_init: deferred_grow_zone(): fix out-of-range first_deferred_pfn
mm/mm_init: remove unnecessary initialization of pgdat->per_cpu_nodestats
mm/mm_init: remove redundant memset in free_area_init()
mm: numa_memblks: use numa_add_reserved_memblk() in numa_cleanup_meminfo()
arch_numa: remove redundant node_possible_map assignment
mm: numa_memblks: remove redundant numa_nodemask_from_meminfo()
LoongArch: remove redundant numa_nodes_parsed node_set()
arch_numa: remove redundant numa_nodes_parsed node_set()
x86/numa: remove redundant numa_nodes_parsed node_set()
of/numa: remove redundant numa_nodes_parsed node_set()
ACPI: NUMA: remove redundant numa_nodes_parsed node_set()
mm: numa_memblks: set numa_nodes_parsed in numa_add_memblk()
mm/mm_init: handle alloc_percpu failure in free_area_init_core_hotplug
mm/mm_init: drop overlap_memmap_init()
mm/mm_init: don't overlap NORMAL and MOVABLE zones with kernelcore=mirror
mm/hugetlb: remove unnecessary empty range check in hugetlb_bootmem_set_nodes()
mm: remove unnecessary empty range check in early_calculate_totalpages()
powerpc64/kasan: Remove unreachable invalid range check in kasan_init_phys_region()
ARM: remove unreachable invalid range check in kasan_init()
riscv: remove unreachable invalid range check in kasan_init()
...
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Introduce devres-based helper for of_reserved_mem_device_init()
to help fight dangling references and ever so slightly reduce the
number of boilerplate deinitialization calls.
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Link: https://patch.msgid.link/20260730073214.1146432-1-mukesh.ojha@oss.qualcomm.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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We need the driver-core fixes in here as well to build on top of.
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Fix NULL bus dereference in of_pci_range_parser_one()
- Prevent out-of-bounds access when too many dynamic reserved memory
regions are defined
* tag 'devicetree-fixes-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of/address: Fix NULL bus dereference in of_pci_range_parser_one()
of: reserved_mem: prevent OOB when too many dynamic regions are defined
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The bus matching rework made of_match_bus() return NULL for nodes with
ranges/dma-ranges but no local #address-cells. parser_init() stored that
NULL bus, and the range iterator later dereferenced it.
Reject such nodes in parser_init(), leaving an explicit empty
iterator for callers that ignore the init return, and make
of_dma_get_max_cpu_address() honour the init failure so a rejected node
cannot clamp the DMA limit.
Fixes: 64ee3cf096ac ("of/address: Rework bus matching to avoid warnings")
Cc: stable@vger.kernel.org
Signed-off-by: Carlo Caione <ccaione@baylibre.com>
Link: https://patch.msgid.link/20260727-of-range-parser-null-bus-v3-1-be01b708a4ce@baylibre.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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of_stdout is declared extern in include/linux/of.h alongside of_root
and of_chosen, but unlike those two it is not exported, preventing
modules from referencing it.
Export it with EXPORT_SYMBOL_GPL() so drivers that need the stdout
device node can be built as modules.
Signed-off-by: Zhipeng Wang <zhipeng.wang_1@nxp.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Ulf Hansson <ulfh@kernel.org>
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The kernel doc claims out_args is optional. In practice, the function
unconditionally dereferences it. It feels like calling this function
with a NULL out_args argument may be a valid use case (in order to know
if the lookup would work, even though we might not care about the
result), even though in practice there seem to be no actual user of that
possibility. All callers give an on-stack object to fill.
There are two ways out: either we drop the "optional" wording from the
kernel doc, or we handle the NULL case properly. Since handling this
case goes in favor of more harmonization of the semantics and since
of_parse_phandle_with_args() actually do handle that situation
correctly, let's handle it in the _map() case as well.
Use a local on-stack object in case no argument is passed. This way, we
actually go through the same logic as if there was an argument. We may
however return rather early, since the second part of the function is
dedicated at filling that argument.
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260710183359.61D3A1F000E9@smtp.kernel.org/
Signed-off-by: Miquel Raynal (Schneider Electric) <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20260716-schneider-v7-2-rc1-eip-of-fix-v1-1-9b9383f936c6@bootlin.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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of_node_init() is a static inline that references of_node_ktype when
CONFIG_OF_KOBJ=y. Any module that calls of_node_init() will therefore
have an unresolved reference to of_node_ktype at load time, because
the symbol is defined in drivers/of/kobj.c but was never exported.
This causes a modpost build error when CONFIG_OF_KOBJ=y and
CONFIG_DRIVER_PE_KUNIT_TEST=m:
ERROR: modpost: "of_node_ktype"
[drivers/base/test/property-entry-test.ko] undefined!
Add EXPORT_SYMBOL_IF_KUNIT(of_node_ktype) so that modules such as the
KUnit property-entry test can call of_node_init() without hitting this
linker error.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202607181651.RnUuV8n6-lkp@intel.com/
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202607181651.RnUuV8n6-lkp@intel.com/
Link: https://patch.msgid.link/20260721105448.2109894-2-xu.yang_2@oss.nxp.com
[ Add empty line before the kunit include. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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On boot, fdt_scan_reserved_mem() saves each dynamically-placed
/reserved-memory subnode into a local array of size
MAX_RESERVED_REGIONS.
If the device tree defines more than MAX_RESERVED_REGIONS
dynamically-placed regions, fdt_scan_reserved_mem() writes past the
end of the local array.
Add a bounds check that logs an error and skips the excess regions,
restoring the original behavior.
Fixes: 8a6e02d0c00e ("of: reserved_mem: Restructure how the reserved memory regions are processed")
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Link: https://patch.msgid.link/20260614133807.2165124-2-ekffu200098@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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When too many reserved memory regions are defined,
fdt_init_reserved_mem_node() logs an error and skips the region without
naming the node.
Print the node name so the skipped node can be identified, matching
fdt_scan_reserved_mem().
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Link: https://patch.msgid.link/20260614133807.2165124-3-ekffu200098@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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Ahead of reworking the reference counting logic for platform devices,
encapsulate the assignment of the OF node for dynamically allocated
platform devices with the provided helper.
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260706-pdev-fwnode-ref-v3-6-1ff028e33779@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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numa_add_memblk() now sets the node in numa_nodes_parsed itself, so the
caller's own node_set() is redundant. Remove it.
No functional change.
Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260703041329.2797584-4-ekffu200098@gmail.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
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files)
Replace the #include of <linux/mod_devicetable.h> by the more specific
<linux/device-id/*.h> where applicable. For most cases the include
can be dropped completely, only a few drivers need one or two headers
added.
Acked-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
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Commit 35c18f2933c5 ("Add a new optional ",cma" suffix to the
crashkernel= command line option") and commit ab475510e042 ("kdump:
implement reserve_crashkernel_cma") added CMA support for kdump
crashkernel reservation.
Crash kernel memory reservation wastes production resources if too
large, risks kdump failure if too small, and faces allocation difficulties
on fragmented systems due to contiguous block constraints. The new
CMA-based crashkernel reservation scheme splits the "large fixed
reservation" into a "small fixed region + large CMA dynamic region": the
CMA memory is available to userspace during normal operation to avoid
waste, and is reclaimed for kdump upon crash—saving memory while
improving reliability.
So extend crashkernel CMA reservation support to arm64. The following
changes are made to enable CMA reservation:
- Parse and obtain the CMA reservation size along with other crashkernel
parameters.
- Call reserve_crashkernel_cma() to allocate the CMA region for kdump.
- Include the CMA-reserved ranges for kdump kernel to use.
- Exclude the CMA-reserved ranges from the crash kernel memory to
prevent them from being exported through /proc/vmcore, which is already
done in the crash core.
Update kernel-parameters.txt to document CMA support for crashkernel on
arm64 architecture.
Tested-by: Breno Leitao <leitao@debian.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Baoquan He <bhe@redhat.com>
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20260629094746.191843-10-ruanjinjie@huawei.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
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The @filter_np parameter descriptions in of_map_id() and of_map_msi_id()
contained the text '*filter_np' in prose. Docutils interprets a leading
'*' as the start of RST emphasis (italic), but finds no closing '*',
triggering:
Documentation/devicetree/kernel-api:11: ./drivers/of/base.c:2134:
WARNING: Inline emphasis start-string without end-string. [docutils]
Documentation/devicetree/kernel-api:11: ./drivers/of/base.c:2260:
WARNING: Inline emphasis start-string without end-string. [docutils]
Fix by wrapping '*filter_np' in double backticks (*filter_np) to
render it as an RST inline code literal, which is also the correct
kernel-doc convention for pointer expressions.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202606130111.ldC96rqf-lkp@intel.com/
Signed-off-by: Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com>
Link: https://patch.msgid.link/20260619-iommu_map_kdoc_fix-v1-1-9573e1cf30b3@oss.qualcomm.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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fwnode_property_get_reference_args() should return -ENOENT when an out
of bound index is passed. An issue arised with the OF backend because
the OF API use signed indexes while the fwnode API use unsigned ones.
When an index value greater the INT_MAX was passed to the OF backend
it got casted to a negative value and it returned -EINVAL instead of
-ENOENT. This patch add a check to of_fwnode_get_reference_args() to
catch negative index before they are passed to the OF API and return
-ENOENT right away.
This issue appeared when the following pattern was used in the LED
subsystem:
index = fwnode_property_match_string(fwnode, "led-names", name)
led_node = fwnode_find_reference(fwnode, "leds", index);
Unlike the same pattern with the OF API, this pattern implicitly cast
the signed return value of fwnode_property_match_string() to an
unsigned index leading to the above issue with the OF backend. It can
be argued that the return value of fwnode_property_match_string()
should be checked separately, but I think there is value in supporting
such simple and straight to the point patterns.
Link: https://lore.kernel.org/linux-leds/aimVRwJPhlGxsIUj@tom-desktop/T/#mc43cbf7e0599991b56dd0d9680714d28d145fbc8
Cc: Tommaso Merciai <tommaso.merciai.xr@bp.renesas.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Alban Bedel <alban.bedel@lht.dlh.de>
Link: https://patch.msgid.link/20260618152035.1600436-1-alban.bedel@lht.dlh.de
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
"DT core:
- Add support for handling multiple cells in "iommu-map" entries
- Support only 1 entry in /reserved-memory "reg" entries. Support for
more than 1 entry has been broken
- Fix a UAF on alloc_reserved_mem_array() failure
- Make "ibm,phandle" handling logic specific to PPC
- Use memcpy() instead of strcpy() for known length strings
- Ensure __of_find_n_match_cpu_property() handles malformed "reg"
entries
- Add various checks that expected strings are strings before
accessing them
- Drop redundant memset() when unflattening DT
DT bindings:
- Add a DTS style checker. Currently hooked up to dt_binding_check to
check examples
- Convert st,nomadik platform, ti,omap-dmm, and ti,irq-crossbar
bindings to DT schema
- Add Apple System Management Controller hwmon, Qualcomm Hamoa
Embedded Controller, Qualcomm IPQ6018 PWM controller, fsl,mc1323,
Samsung SOFEF01-M DDIC panel, Freescale i.MX53 Television Encoder,
Samsung S2M series PMIC extcon, and MT6365 PMIC AuxADC schemas
- Extend bindings for QCom Maili and Nord PDC, QCom Hali fastrpc,
qcom,eliza-imem, qcom,oryon-1-5 CPU, and MT6365 Keys
- Consolidate "sram" property definitions
- Fix constraints on "nvmem" properties which only contain phandles
and no arg cells
- Another pass of fixing "phandle-array" constraints
- Add Gira vendor prefix"
* tag 'devicetree-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (50 commits)
dt-bindings: interrupt-controller: qcom,pdc: Add Maili compatible string
dt-bindings: interrupt-controller: ti,irq-crossbar: Convert to DT schema
dt-bindings: vendor-prefixes: add Gira
dt-bindings: embedded-controller: Add Qualcomm reference device EC description
dt-bindings: pwm: add IPQ6018 binding
dt-bindings: hwmon: Add Apple System Management Controller hwmon schema
docs: dt: writing-schema: Clarify what is required in a schema
of: Respect #{iommu,msi}-cells in maps
of: Factor arguments passed to of_map_id() into a struct
of: Add convenience wrappers for of_map_id()
of: reserved_mem: zero total_reserved_mem_cnt if no valid /reserved-memory entry
of: reserved_mem: handle NULL name in of_reserved_mem_lookup()
dt-bindings: cache: l2c2x0: Add missing power-domains
dt-bindings: interrupt-controller: renesas,r9a09g077-icu: Fix reg size in example
dt-bindings: nvmem: consumer: Make 'nvmem' an array of one-item entries
drivers/of/overlay: Use memcpy() to copy known length strings
dt-bindings: add self-test fixtures for style checker
dt-bindings: wire style checker into dt_binding_check
scripts/jobserver-exec: propagate child exit status
dt-bindings: add DTS style checker
...
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So far our parsing of {iommu,msi}-map properties has always blindly
assumed that the output specifiers will always have exactly 1 cell.
This typically does happen to be the case, but is not actually enforced
(and the PCI msi-map binding even explicitly states support for 0 or 1
cells) - as a result we've now ended up with dodgy DTs out in the field
which depend on this behaviour to map a 1-cell specifier for a 2-cell
provider, despite that being bogus per the bindings themselves.
Since there is some potential use in being able to map at least single
input IDs to multi-cell output specifiers (and properly support 0-cell
outputs as well), add support for properly parsing and using the target
nodes' #cells values, albeit with the unfortunate complication of still
having to work around expectations of the old behaviour too.
Since there are multi-cell output specifiers, the callers of of_map_id()
may need to get the exact cell output value for further processing.
Update of_map_id() to set args_count in the output to reflect the actual
number of output specifier cells.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Charan Teja Kalla <charan.kalla@oss.qualcomm.com>
Signed-off-by: Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com>
Link: https://patch.msgid.link/20260603-parse_iommu_cells-v16-3-dc509dacb19a@oss.qualcomm.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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Change of_map_id() to take a pointer to struct of_phandle_args
instead of passing target device node and translated IDs separately.
Update all callers accordingly.
Add an explicit filter_np parameter to of_map_id() and of_map_msi_id()
to separate the filter input from the output. Previously, the target
parameter served dual purpose: as an input filter (if non-NULL, only
match entries targeting that node) and as an output (receiving the
matched node with a reference held). Now filter_np is the explicit
input filter and arg->np is the pure output.
Previously, of_map_id() would call of_node_put() on the matched node
when a filter was provided, making reference ownership inconsistent.
Remove this internal of_node_put() call so that of_map_id() now always
transfers ownership of the matched node reference to the caller via
arg->np. Callers are now consistently responsible for releasing this
reference with of_node_put(arg->np) when done.
Acked-by: Frank Li <Frank.Li@nxp.com>
Suggested-by: Rob Herring (Arm) <robh@kernel.org>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Charan Teja Kalla <charan.kalla@oss.qualcomm.com>
Signed-off-by: Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com>
Link: https://patch.msgid.link/20260603-parse_iommu_cells-v16-2-dc509dacb19a@oss.qualcomm.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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Since we now have quite a few users parsing "iommu-map" and "msi-map"
properties, give them some wrappers to conveniently encapsulate the
appropriate sets of property names. This will also make it easier to
then change of_map_id() to correctly account for specifier cells.
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Vijayanand Jitta <vijayanand.jitta@oss.qualcomm.com>
Link: https://patch.msgid.link/20260603-parse_iommu_cells-v16-1-dc509dacb19a@oss.qualcomm.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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Prepare for storing /memreserve/ entries in the reserved_mem array.
Zero total_reserved_mem_cnt if no valid /reserved-memory entry,
instead of keeping it's initial value of MAX_RESERVED_REGIONS, this
allows accounting /memreserve entries based on total_reserved_mem_cnt
in a follow-up patch.
No functional change.
Signed-off-by: Wandun Chen <chenwandun@lixiang.com>
Link: https://patch.msgid.link/20260527032917.3385849-5-chenwandun1@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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Prepare for an upcoming change that appends /memreserve/ entries to
reserved_mem[]; such entries have no name.
No functional change.
Signed-off-by: Wandun Chen <chenwandun@lixiang.com>
Link: https://patch.msgid.link/20260527032917.3385849-2-chenwandun1@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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Avoid calls to strcpy().
The lengths of the strings have been used for the kzalloc(), replace
the strcpy() calls with memcpy() using the known lengths.
Signed-off-by: David Laight <david.laight.linux@gmail.com>
Link: https://patch.msgid.link/20260608185121.22331-1-david.laight.linux@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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In __of_find_n_match_cpu_property(), checking the variable ac for 0 won't
prevent a possible overflow when multiplying it by sizeof(*cell). Besides,
of_read_number() (called in the *for* loop) can't return correct result if
that variable (which equals the #address-cells prop's value) exceeds 2, so
additionally checking for that seems logical...
Found by Linux Verification Center (linuxtesting.org) with the Svace static
analysis tool.
Fixes: f3cea45a77c8 ("of: Fix iteration bug over CPU reg properties")
Signed-off-by: Sergey Shtylyov <s.shtylyov@auroraos.dev>
Link: https://patch.msgid.link/0c7bf7e9-887c-42d5-bcfb-0ba7fe1e70b6@auroraos.dev
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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The global pointer 'reserved_mem' continues to reference the
reserved_mem_array which lives in __initdata if
alloc_reserved_mem_array() fails. of_reserved_mem_lookup() is
exported for post-init use, that would dereference freed memory
and trigger a use-after-free.
So reset reserved_mem_count to 0 when alloc_reserved_mem_array()
fails.
Fixes: 00c9a452a235 ("of: reserved_mem: Add code to dynamically allocate reserved_mem array")
Signed-off-by: Wandun Chen <chenwandun@lixiang.com>
Link: https://patch.msgid.link/20260604015332.3669384-1-chenwandun1@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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The "ibm,phandle" thing only seems to be needed on pseries
machines but everyone gets it so they get a string and a little
bit of useless code.
In __of_attach_node() the pseries specific part uses
IS_ENABLED(CONFIG_PPC_PSERIES) so do that here too.
Signed-off-by: Daniel Palmer <daniel@thingy.jp>
Link: https://patch.msgid.link/20260603151809.3256280-1-daniel@thingy.jp
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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A /reserved-memory child node may have multiple <base size> tuples in
'reg' property, but multiple entries in 'reg' have never been fully
functional:
- fdt_scan_reserved_mem() in the early pass loops over every
tuple and reserves them all.
- fdt_scan_reserved_mem_late() reads 'reg' by
of_flat_dt_get_addr_size(), which returns false if entries != 1.
So 'reg' property with multiple <base size> entries will be
skipped, no reserved_mem entry is created in reserved_mem[].
Supporting multiple <base size> tuples is not a good idea:
- It requires reserved_mem_ops->node_init support. Currently,
CMA(rmem_cma_setup) and DMA(rmem_dma_setup) are not supported.
- of_reserved_mem_lookup() is name-based, only the first entry in
multiple <base size> tuples will be found.
So change to support one <base size> entry in 'reg' property.
Also update dt binding:
https://github.com/devicetree-org/dt-schema/pull/197
Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wandun Chen <chenwandun@lixiang.com>
Tested-by: Meijing Zhao <zhaomeijing@lixiang.com>
Link: https://lore.kernel.org/all/20260506014752.GA280279-robh@kernel.org/
Link: https://patch.msgid.link/20260525121700.2706141-1-chenwandun1@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
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