[GIT PULL] Driver core changes for 7.3-rc1
"Danilo Krummrich" <[email protected]>
| Newsgroups | dev.linux.lists.driver-core,org.kernel.vger.linux-kernel,org.kernel.vger.rust-for-linux |
|---|---|
| Message-ID | <[email protected]> |
Hi Linus, Please pull these driver-core changes. All commits have been in linux-next; two signed tags for "software node fw_devlink support" and "Rust I/O type generalization and projection" have been shared with other trees. Expect a few minor conflicts with other trees (DRM, PM, PWM), and a minor semantic one with the Rust tree [1]. Thanks, Danilo [1] https://lore.kernel.org/linux-next/[email protected]/ The following changes since commit db2ddb87143519e20a95aa36c60b36107b736a58: Linux 7.2-rc7 (2026-08-09 14:54:50 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core.git tags/driver-core-7.3-rc1 for you to fetch changes up to 3b5ea0f078e1b72276e99c237f3dfc2fd72938bb: rust: pci: expose the allocated interrupt type (2026-08-17 01:43:31 +0200) ---------------------------------------------------------------- Driver core changes for 7.3-rc1 - 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. ---------------------------------------------------------------- Alban Bedel (1): software node: Fix software_node_get_reference_args() with index -1 Alexandre Courbot (3): rust: io: register: dispatch shortcut rules internally rust: io: register: remove unused rule arguments rust: io: register: use path fragment for alias destination Andy Shevchenko (1): device property: Refactor to use RAII approach Bartosz Golaszewski (32): powerpc/powermac: fix OF node refcount driver core: platform: provide platform_device_set_of_node() driver core: platform: provide platform_device_set_fwnode() driver core: platform: provide platform_device_set_of_node_from_dev() driver core: update kerneldoc for platform_device_alloc() of: platform: use platform_device_set_of_node() powerpc/powermac: use platform_device_set_of_node() i2c: pxa-pci: use platform_device_set_of_node() iommu/fsl: use platform_device_set_of_node() net: bcmgenet: use platform_device_set_of_node() pmdomain: imx: use platform_device_set_of_node() mfd: tps6586: use platform_device_set_of_node() slimbus: qcom-ngd-ctrl: use platform_device_set_of_node() net: mv643xx: use platform_device_set_of_node() drm/xe/i2c: use platform_device_set_fwnode() platform/surface: gpe: use platform_device_set_fwnode() usb: chipidea: use platform_device_set_of_node_from_dev() usb: musb: use platform_device_set_of_node_from_dev() reset: rzg2l: use platform_device_set_of_node_from_dev() driver core: platform: count references to all kinds of firmware nodes kunit: provide a set of fwnode-oriented helpers software node: add fw_devlink support software node: add kunit tests for fw_devlink support MAINTAINERS: add myself as reviewer of software node support driver core: platform: amend the API contract for fwnode setters platform/surface: gpe: use platform_device_register_full() drm/xe/i2c: use device_create_managed_software_node() driver core: platform: unify release path driver core: platform: tests: add test cases for correct swnode removal platform/surface: gpe: add missing err.h include ACPI/APMT: use platform_device_set_fwnode() ACPI/IORT: use platform_device_set_fwnode() Chun-Yi Lee (1): debugfs: Fix lockdown check for mmap_prepare Danilo Krummrich (24): rust: types: rename ForLt to CovariantForLt rust: types: introduce ForLt base trait for CovariantForLt rust: auxiliary: add registration_data_with() for ForLt types rust: auxiliary: sample: demonstrate ForLt with invariant Mutex type rust: devres: add DevresLt for ForLt-aware device resource access rust: pci: return DevresLt from Bar::into_devres() rust: io: mem: return DevresLt from IoMem/ExclusiveIoMem::into_devres() Merge patch series "ForLt/CovariantForLt split, auxiliary closure API and DevresLt" Merge patch series "rust: I/O type generalization and projection" rust: devres: fix race between concurrent revokers rust: devres: ensure revocation is complete before device finishes unbinding Merge patch series "software node: provide support for fw_devlink" rust: device: add BoundInternal device context and InternalBoundContext trait rust: device: move drvdata_borrow() to InternalBoundContext fwnode: add missing kernel-doc for struct fwnode_operations members MAINTAINERS: add sys_soc.h to DRIVER CORE rust: irq: make Registration compatible with lifetime-bound drivers Merge tag 'v7.2-rc7' into driver-core-next rust: serdev: use ThisModule::as_ptr() instead of field access rust: pci: convert IrqVectorRegistration to a lifetime-managed owning type rust: pci: resolve IRQ in index() and embed IrqRequest in IrqVector rust: pci: remove request_irq() and request_threaded_irq() from Device PCI: Add pci_irq_type() to query the allocated interrupt type rust: pci: expose the allocated interrupt type David Laight (1): kernfs: Replace strcpy(s, "../") with memcpy(s, "../", 4) Dmitry Antipov (1): kernfs: simplify kernfs_name_hash() Dmitry Torokhov (2): firmware_loader: builtin: ignore 0-size firmware firmware_loader: builtin: fail build on empty firmware Ethan Plant (1): rust: pci: Mark Device refcount methods inline Ewan D. Milne (1): drivers: base: Remove statistics group if encryption group not created Francesco Valla (1): driver core: add driver name to probe debug print Gary Guo (33): rust: io: add dynamically-sized `Region` type rust: io: add missing safety requirement in `IoCapable` methods rust: io: restrict untyped IO access and `register!` to `Region` rust: io: implement `Io` on reference types instead rust: io: generalize `MmioRaw` to pointer to arbitrary type rust: io: rename `Mmio` to `MmioOwned` rust: io: implement `Mmio` as view type rust: pci: io: make `ConfigSpace` a view rust: io: use view types instead of addresses for `Io` pwm: th1520: remove unnecessary `deref` rust: io: remove `MmioOwned` rust: io: move `Io` methods to extension trait rust: io: add projection macro and methods rust: io: implement a view type for `Coherent` rust: io: add `read_val` and `write_val` functions on `Io` gpu: nova-core: use I/O projection for cleaner encapsulation rust: dma: drop `dma_read!` and `dma_write!` API rust: io: add copying methods rust: io: implement `IoSysMap` rust: device: make lifetime on `Core` and `CoreInternal` invariant rust: io: document const-offset requirement for infallible accessors samples: rust: debugfs: fix excessive stack use rust: devres: use `cast_pin_init` instead of manual reimplementation rust: driver: remove `IdTable::id` rust: driver: simplify `IdArray::new_without_index` rust: pci: use `Option<&IdInfo>` for device ID info rust: usb: use `Option<&IdInfo>` for device ID info rust: driver: centralize device ID handling rust: driver: remove `$module_table_name` from `module_device_table` rust: driver: store pointers in `DeviceId` rust: driver: remove open-coded matching logic rust: driver: remove duplicate ID table rust: net/phy: remove expansion from doc Geert Uytterhoeven (1): base: Remove unused DMA_FENCE_TRACE Kconfig symbol Guru Das Srinagesh (1): samples: rust_dma: use vertical import style Josef Ippisch (2): rust: debugfs: migrate debugfs traits requirements to zerocopy rust: debugfs: remove unsafe blocks from traits impl for Vec Laura Nao (1): rust: io: add I/O backend for system memory with volatile access Link Mauve (1): rust: io: fix example in `register!` macro Manuel Ebner (1): docs: ABI: sysfs-uevent: add missing bracket Markus Probst (3): rust: add basic serial device bus abstractions samples: rust: add Rust serial device bus sample device driver MAINTAINERS: serdev: Add self for serdev Miguel Ojeda (1): rust: firmware: avoid UB in example by passing parameter Mukesh Ojha (1): firmware_loader: do not queue completed sysfs fallback requests Randy Dunlap (3): device property: mark internal data as private for kernel-doc base: soc: fixup sys_soc.h kernel-doc warnings docs/driver-api: infrastructure: add property.h and fwnode.h Sang-Heon Jeon (1): arch_numa: remove redundant nodemask clears in numa_init() Syed Nayyar Waris (1): isa: refactor code to remove nested blocks Thomas Weißschuh (4): kobject: Provide macros to initialize 'struct kobj_attribute' samples/kobject: Switch to the new __KOBJ_ATTR() macro kobject: Allow the constification of kobject attributes samples/kobject: Constify kobject attributes Vincent Mailhol (3): container_of: apply typeof_member() to container_of() container_of: remove useless pair of parentheses container_of: remove local __mptr variable Xu Yang (4): driver core: avoid repeatedly printing the same 'Fixed dependency' log device property: fix infinite loop in fwnode_for_each_child_node() of: kobj: export of_node_ktype for use by modules device property: add test cases for fwnode_for_each_child_node() Yichong Chen (1): kernfs: avoid iattr allocation in listxattr Yohei Kojima (1): debugfs: warn if file creation failed due to uninitialized debugfs Younes Akhouayri (2): rust: irq: fix C header path in module docs rust: dma: return zero for Coherent reads past EOF Yuho Choi (2): driver core: attribute_container: Unwind device_add() on attr failure driver core: soc: Unregister bus on early device registration failure Zenghui Yu (1): driver core: fix path of /sys/module in comment Documentation/ABI/testing/sysfs-uevent | 2 +- Documentation/driver-api/infrastructure.rst | 4 + MAINTAINERS | 9 +- arch/powerpc/platforms/powermac/low_i2c.c | 2 +- drivers/acpi/arm64/apmt.c | 2 +- drivers/acpi/arm64/iort.c | 2 +- drivers/acpi/bus.c | 6 +- drivers/base/Kconfig | 9 - drivers/base/arch_numa.c | 4 - drivers/base/attribute_container.c | 7 +- drivers/base/core.c | 8 +- drivers/base/dd.c | 4 +- drivers/base/firmware_loader/builtin/Makefile | 32 ++- drivers/base/firmware_loader/builtin/main.c | 2 + drivers/base/firmware_loader/fallback.c | 10 + drivers/base/isa.c | 16 +- drivers/base/module.c | 2 +- drivers/base/platform.c | 90 ++++++- drivers/base/property.c | 41 +-- drivers/base/soc.c | 15 +- drivers/base/swnode.c | 81 +++++- drivers/base/test/Kconfig | 6 + drivers/base/test/Makefile | 2 + drivers/base/test/platform-device-test.c | 180 +++++++++++++ drivers/base/test/property-entry-test.c | 137 ++++++++++ drivers/base/test/swnode-devlink-test.c | 337 +++++++++++++++++++++++ drivers/base/transport_class.c | 5 +- drivers/cpufreq/rcpufreq_dt.rs | 1 - drivers/gpu/drm/nova/driver.rs | 1 - drivers/gpu/drm/tyr/driver.rs | 1 - drivers/gpu/drm/xe/xe_i2c.c | 22 +- drivers/gpu/drm/xe/xe_i2c.h | 1 - drivers/gpu/nova-core/driver.rs | 7 +- drivers/gpu/nova-core/gpu.rs | 6 +- drivers/gpu/nova-core/gsp.rs | 53 ++-- drivers/gpu/nova-core/gsp/cmdq.rs | 66 +++-- drivers/gpu/nova-core/gsp/fw.rs | 82 ++---- drivers/i2c/busses/i2c-pxa-pci.c | 3 +- drivers/iommu/fsl_pamu.c | 16 +- drivers/mfd/tps6586x.c | 2 +- drivers/net/ethernet/broadcom/genet/bcmmii.c | 3 +- drivers/net/ethernet/marvell/mv643xx_eth.c | 2 +- drivers/of/kobj.c | 3 + drivers/of/platform.c | 2 +- drivers/platform/surface/surface_gpe.c | 40 +-- drivers/pmdomain/imx/gpc.c | 3 +- drivers/pwm/pwm_th1520.rs | 13 +- drivers/reset/reset-rzg2l-usbphy-ctrl.c | 2 +- drivers/slimbus/qcom-ngd-ctrl.c | 2 +- drivers/tty/serdev/Kconfig | 7 + drivers/usb/chipidea/core.c | 2 +- drivers/usb/musb/jz4740.c | 2 +- fs/debugfs/file.c | 3 +- fs/debugfs/inode.c | 5 +- fs/kernfs/dir.c | 4 +- fs/kernfs/inode.c | 4 +- fs/kernfs/symlink.c | 2 +- include/acpi/acpi_bus.h | 11 - include/kunit/fwnode.h | 29 ++ include/linux/container_of.h | 5 +- include/linux/fwnode.h | 4 + include/linux/kobject.h | 75 +++++- include/linux/pci.h | 30 +++ include/linux/platform_device.h | 8 + include/linux/property.h | 2 + include/linux/sys_soc.h | 9 +- lib/kobject.c | 8 +- lib/kunit/Makefile | 1 + lib/kunit/fwnode.c | 146 ++++++++++ rust/bindings/bindings_helper.h | 1 + rust/helpers/acpi.c | 16 -- rust/helpers/helpers.c | 2 +- rust/helpers/io.c | 13 + rust/helpers/pci.c | 5 + rust/helpers/serdev.c | 22 ++ rust/kernel/acpi.rs | 14 +- rust/kernel/auxiliary.rs | 96 ++++--- rust/kernel/debugfs/traits.rs | 41 +-- rust/kernel/device.rs | 71 +++-- rust/kernel/device_id.rs | 196 +++++++------- rust/kernel/devres.rs | 151 ++++++++++- rust/kernel/dma.rs | 287 +++++++++++--------- rust/kernel/driver.rs | 137 +--------- rust/kernel/firmware.rs | 8 +- rust/kernel/i2c.rs | 26 +- rust/kernel/io.rs | 1519 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---------------------- rust/kernel/io/mem.rs | 94 ++++--- rust/kernel/io/poll.rs | 6 +- rust/kernel/io/register.rs | 86 +++--- rust/kernel/irq.rs | 2 +- rust/kernel/irq/request.rs | 432 ++++++++++++++---------------- rust/kernel/lib.rs | 5 + rust/kernel/net/phy.rs | 66 +---- rust/kernel/of.rs | 14 +- rust/kernel/pci.rs | 32 +-- rust/kernel/pci/io.rs | 203 ++++++++------ rust/kernel/pci/irq.rs | 210 +++++++-------- rust/kernel/platform.rs | 53 ++-- rust/kernel/ptr.rs | 12 + rust/kernel/serdev.rs | 604 +++++++++++++++++++++++++++++++++++++++++ rust/kernel/types.rs | 5 +- rust/kernel/types/for_lt.rs | 103 +++++-- rust/kernel/usb.rs | 24 +- rust/macros/for_lt.rs | 41 ++- rust/macros/lib.rs | 18 +- samples/kobject/kobject-example.c | 24 +- samples/rust/Kconfig | 11 + samples/rust/Makefile | 1 + samples/rust/rust_debugfs.rs | 5 +- samples/rust/rust_debugfs_scoped.rs | 5 +- samples/rust/rust_dma.rs | 25 +- samples/rust/rust_driver_auxiliary.rs | 100 ++++--- samples/rust/rust_driver_i2c.rs | 3 - samples/rust/rust_driver_pci.rs | 4 +- samples/rust/rust_driver_platform.rs | 2 - samples/rust/rust_driver_serdev.rs | 88 ++++++ samples/rust/rust_driver_usb.rs | 3 +- samples/rust/rust_i2c_client.rs | 2 - samples/rust/rust_soc.rs | 2 - 119 files changed, 4751 insertions(+), 1842 deletions(-) create mode 100644 drivers/base/test/swnode-devlink-test.c create mode 100644 include/kunit/fwnode.h create mode 100644 lib/kunit/fwnode.c delete mode 100644 rust/helpers/acpi.c create mode 100644 rust/helpers/serdev.c create mode 100644 rust/kernel/serdev.rs create mode 100644 samples/rust/rust_driver_serdev.rs