kernel/git/stable/linux.git/drivers/acpi/arm64, branch master

Merge tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

2026-08-19T17:42:18+00:00

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, 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 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 ...

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2026-08-18T18:57:17+00:00

Pull arm64 updates from Will Deacon: "There's a reasonable amount of stuff here, including a bunch of updates to the perf PMU drivers and some MPAM updates to expose the memory bandwidth counters via resctrl. On the architecture side, some highlights include support for BBML3 and steps towards support for an architectural NMI solution, all wrapped up in a web of fixes for latent issues identified by Sashiko. ACPI: - Combine reads of AMU counters into a single FFH feedback counter op Confidential computing: - Fix smp_processor_id() in preemptible context when retrieving an attestation token inside a realm - Convert pKVM over to a "CC platform" - Clean-up our SWIOTLB configuration in preparation for reworking the handling of encrypted/decryped DMA buffers in the dma-mapping tree CPU errata handling: - Work around broken device memory ordering on NVIDIA Olympus cores - Fix broken 'nospectre_bhb' command-line option - Select the idle loop backend instruction on the command-line CPU features: - Replace our BBML2-noabort feature with the new architectural BBML3 feature - Disable in-kernel BTI for recent versions of Clang due to issues with livepatch that are still being investigated - Clean-up documentation describing which ID register fields are exposed to userspace Interrupts: - Preliminary work towards supporting FEAT_NMI, which cleans up our IRQ entry code and fixes some latent issues with pseudo-NMI - Support for an SDEI backend to trigger an NMI backtrace Memory management: - Treat all devices as coherent when CLIDR_EL1.LoC == 0 - Fix no-map handling of sub-page-sized regions - Second attempt at unmapping the linear aliases of the kernel data and bss sections - Fix EFI runtime calls when software-PAN is enabled Miscellaneous: - Add Mark Rutland as a reviewer! - Tidy-up our futex cmpxchg logic when using the new LSUI instructions - Drop the requirement on DYNAMIC_FTRACE_WITH_CALL_OPS when selecting HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS - Fix a false-positive KCSCAN splat in the delay loop - Use a portable typedef for 128-bit scalar types in our UAPI headers - Non-critical fixes for Sashiko reports all over MPAM: - Hook MPAM memory bandwidth counters into resctrl's counter assignment interface - Fix a quirk in the MPAM bandwidth counting on Nvidia T241 so that it also applies to 63 bit counters Perf: - Workarounds for hardware issues in the CMN-S3 PMU (Graviton 5) and CPU PMU (NVIDIA Olympus again!) - Add support for the DDR PMU on Marvell CN20K SoCs - Add support for Picoheart implementations of the DCW PCIe PMU - Add support for Channel/Rank/Bank filtering in the CXL PMU driver - Add support for 64-bit counters in the CSPMU device - Add support for revision 2 of the CMN S3 PMU Ptrace: - Fix a decade-old bug in our handling of seccomp and tracing on syscall entry - Fix regset handling for inactive SVE and SSVE registers Selftests - Add some tests for the decade-old bug that we just tried to fix in our syscall entry path - Fix SVE test crash on SME-only CPUs" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (95 commits) arm64/efi: Avoid voluntary preemption with efi_mm installed arm64: bti: Disable in-kernel BTI with recent versions of Clang arm64: entry: Avoid unnecessary local_irq_disable() on kernel exit irqchip/gic-v3: make the unmasking of pseudo-NMIs explicit when handling IRQs arm64: Disable KCSAN instrumentation in delay.o arm_mpam: Disable driver unbind to avoid UAF arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt perf: arm_pmuv3: Zero initialize hw_id branch stack field arm64: mm: Unmap kernel data/bss entirely from the linear map iommu/arm-smmu-v3-sva: Use system_supports_bbml3() to detect CPU feature perf/arm-cmn: Support CMN S3 r2 perf/arm-cmn: Plumb in new filter types perf/arm-cmn: Refactor event filter data perf/arm-cmn: Refactor event filter programming perf/arm-cmn: Rename filter variables for clarity arm64: mm: fix accidental linear mapping of no-map reserved memory tools: Ensure tools copy of linux/filter.h exports the UAPI kselftest/arm64: Fix abi test compilation errors arch: arm64: add early_param idle= arm64: entry: mask DAIF before returning from C EL1 handlers ...

ACPI/IORT: use platform_device_set_fwnode()

2026-08-07T22:49:26+00:00

Platform devices using the split approach of calling platform_device_alloc() and platform_device_add() must not assign the firmware nodes manually but use the provided platform_device_set_fwnode() function which additionally makes sure we track the reference count of the firmware node correctly. Replace the manual assignment of the firmware node with a call to platform_device_set_fwnode(). Signed-off-by: Bartosz Golaszewski Acked-by: Sudeep Holla Link: https://patch.msgid.link/20260728-acpi-arm64-pdev-set-fwnode-v1-2-b5aff9b2235a@oss.qualcomm.com Signed-off-by: Danilo Krummrich

ACPI/APMT: use platform_device_set_fwnode()

2026-08-07T22:49:26+00:00

Platform devices using the split approach of calling platform_device_alloc() and platform_device_add() must not assign the firmware nodes manually but use the provided platform_device_set_fwnode() function which additionally makes sure we track the reference count of the firmware node correctly. Replace the manual assignment of the firmware node with a call to platform_device_set_fwnode(). Signed-off-by: Bartosz Golaszewski Acked-by: Sudeep Holla Link: https://patch.msgid.link/20260728-acpi-arm64-pdev-set-fwnode-v1-1-b5aff9b2235a@oss.qualcomm.com Signed-off-by: Danilo Krummrich

ACPI/APMT: Use stable device ID

2026-08-02T10:57:31+00:00

The APMT node format includes a unique identifier, so we can use this as the platform device ID to give userspace stable and identifiable device names, rather than auto numbering dependent on how the table is parsed. Cc: Lorenzo Pieralisi Cc: Hanjun Guo Cc: Sudeep Holla Reviewed-by: Ilkka Koskinen Signed-off-by: Robin Murphy Reviewed-by: Hanjun Guo Signed-off-by: Will Deacon

ACPI/IORT: Implement ACPI infrastructure to enable GICv5 IWB probe deferral

2026-07-09T13:30:19+00:00

Implement an IORT ACPI hook to retrieve the acpi_handle of the interrupt controller handling a specific GSI (if any, on GICv5 systems only the IWB is represented in firmware with an ACPI device object) and add the IWB to the list of devices whose dependencies can be detected (and cleared) in ACPI core to guarantee that probe dependencies for the IWB can be satisfied. Enable autodep detection for arm64 by adding the arch_acpi_add_auto_dep() callback in the ACPI IORT driver. Signed-off-by: Lorenzo Pieralisi Link: https://patch.msgid.link/20260709-gic-v5-acpi-iwb-probe-deferral-v4-6-48dae790f871@kernel.org Signed-off-by: Rafael J. Wysocki

Merge tag 'timers-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource

2026-06-13T14:24:29+00:00

Pull clocksource/driver updates from Daniel Lezcano: - Remove the sifive,fine-ctr-bits property bindings because it is a redundant information (Nick Hu) - Remove the TCIU8 interrupt bindings on Renesas because it should not be described as the documentation marked reserved and fix the conditional reset line for the RZ/{T2H,N2H} (Cosmin Tanislav) - Add the StarFive JHB100 clint DT bindings compatible string (Ley Foon Tan) - Extend schema condition for interrupts to cover D1 compatible variant an add the D1 hstimer support (Michal Piekos) - Update the ARM architected timer support to handle the ACPI GTDT v3 format and the EL2 virtual timer, enabling Linux to use the most appropriate timer when running with VHE, while also fixing several Device Trees to accurately reflect the underlying hardware (Marc Zyngier) - Cleanup and add the clocksource and the clockevent in the TI DM timer (Markus Schneider-Pargmann) - Add the multiple watchdogs support in the tegra186 and tegra234. Dedicate one as a kernel watchdog (Kartik Rajput) - Add the NXP clocksource selection for the scheduler in the Kconfig (Enric Balletbo i Serra) Link: https://lore.kernel.org/all/1e55e8d6-8024-4f17-8620-ab3385465d76@oss.qualcomm.com

ACPI: GTDT: Parse information related to the EL2 virtual timer

2026-06-03T07:52:55+00:00

Now that we have a way to identify GTDTv3, allow the information related to the EL2 virtual timer to be retrieved by the interface used by the architected timer driver. Signed-off-by: Marc Zyngier Signed-off-by: Daniel Lezcano Reviewed-by: Sudeep Holla Reviewed-by: Hanjun Guo Link: https://patch.msgid.link/20260523140242.586031-3-maz@kernel.org

ACPI: GTDT: Account for GTDTv3 size when walking the platform timer descriptors

2026-06-03T07:52:23+00:00

Since ARMv8.1, the architecture has grown an EL2-private virtual timer. This has been described in ACPI since ACPI v6.3 and revision 3 of the GTDT table. An aditional structure was added in ACPICA, though in a rather bizarre way, and merged in v5.1 as 8f5a14d053100 ("ACPICA: ACPI 6.3: add GTDT Revision 3 support"). Finally plug the table parsing in GTDT, and correct the parsing of the platform timer subtables to account for the expanded size of the base table. This also comes with some extra sanitisation of the table, in the unlikely case someone got it wrong... Suggested-by: Sudeep Holla Signed-off-by: Marc Zyngier Signed-off-by: Daniel Lezcano Reviewed-by: Hanjun Guo Reviewed-by: Sudeep Holla Link: https://patch.msgid.link/20260523140242.586031-2-maz@kernel.org

ACPI: arm64: cpuidle: Tolerate platforms with no deep PSCI idle states

2026-04-27T12:39:32+00:00

Commit cac173bea57d ("ACPI: processor: idle: Rework the handling of acpi_processor_ffh_lpi_probe()") moved the acpi_processor_ffh_lpi_probe() call from acpi_processor_setup_cpuidle_dev(), where its return value was ignored, to acpi_processor_get_power_info(), where it is now treated as a hard failure. As a result, platforms where psci_acpi_cpu_init_idle() returned -ENODEV stopped registering any cpuidle states, forcing CPUs to busy-poll when idle. On NVIDIA Grace (aarch64) systems with PSCIv1.1, pr->power.count is 1 (only WFI, no deep PSCI states beyond it), so the previous "count = pr->power.count - 1; if (count <= 0) return -ENODEV;" check returned -ENODEV for all 72 CPUs and disabled cpuidle entirely. The lpi_states count is already validated in acpi_processor_get_lpi_info(), so the check here is redundant. Simplify the loop to iterate over lpi_states[1..power.count). When only WFI is present, the loop body simply does not execute and the function returns 0, which is the correct outcome: there is nothing to validate for FFH and no error to report. Suggested-by: Huisong Li Cc: stable@vger.kernel.org Fixes: cac173bea57d ("ACPI: processor: idle: Rework the handling of acpi_processor_ffh_lpi_probe()") Signed-off-by: Breno Leitao Reviewed-by: Sudeep Holla Signed-off-by: Catalin Marinas