Changes in Kconfig

59e6295fac26b8e85c1ea859cdd89fa1e47519d7 - Merge tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

Wed, 19 Aug 2026 19:42:18 +0200

Merge tag 'driver-core-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-corePull 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 ... List of files: /linux/drivers/base/Kconfig

4e63c0582e2aef7284a2cc7c62215f245003e775 - base: Remove unused DMA_FENCE_TRACE Kconfig symbol

Fri, 19 Jun 2026 12:03:31 +0200

base: Remove unused DMA_FENCE_TRACE Kconfig symbolCommit d72277b6c37db66b ("dma-buf: nuke DMA_FENCE_TRACE macros v2") inv5.16 removed all users of DMA_FENCE_TRACE on the premise that theKconfig symbol did not exist. Apparently one failed to notice thesymbol did exist since almost five years before: it was renamed fromFENCE_TRACE to DMA_FENCE_TRACE in commit f54d1867005c3323 ("dma-buf:Rename struct fence to dma_fence") in v4.10.Time passed by, so remove the Kconfig symbol, as no one seems to havemissed the functionality.Signed-off-by: Geert Uytterhoeven Reviewed-by: Christian König Link: https://patch.msgid.link/16fb40ded203d1e2b72f4eeecad3fd0c0d23ad6f.1781863296.git.geert@linux-m68k.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux/drivers/base/Kconfig

7a0e692a0381254b2f77c54dec100cd3325a6fdf - Merge branch 'next' into for-linus

Tue, 23 Jun 2026 08:10:08 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.2 merge window. List of files: /linux/drivers/base/Kconfig

fff88709f9a9153af85b5224b4594caa5387ca60 - Merge tag 'v7.1-rc6' into next

Mon, 01 Jun 2026 04:43:25 +0200

Merge tag 'v7.1-rc6' into nextSync up with mainline to pull in a fix to IMS PCU driver and otherenhancements. List of files: /linux/drivers/base/Kconfig

5c8cbca290acdd49a694b36c0af76ba0c00bbf12 - Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEAD

Thu, 21 May 2026 22:36:50 +0200

Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEADMerge the branch with the soc/qcom changes, required for the next UBWCpatches.Signed-off-by: Dmitry Baryshkov List of files: /linux/drivers/base/Kconfig

09d6818d3bdc1ea6e49a425040528cbdbc97bc0a - Merge branch 'linus' into timers/clocksource

Mon, 18 May 2026 11:01:07 +0200

Merge branch 'linus' into timers/clocksource... to bring it up to date for new changes. List of files: /linux/drivers/base/Kconfig

658a6021492ad3b1b8a6e9a83963a1fad35a2af8 - Merge drm/drm-next into drm-intel-next

Fri, 15 May 2026 13:01:15 +0200

Merge drm/drm-next into drm-intel-nextSome Display Port Adaptive Sync depends on drm work.Signed-off-by: Rodrigo Vivi List of files: /linux/drivers/base/Kconfig

8edf8b09fc44990977b3fbcb708035b1740d0b7e - Merge drm/drm-next into drm-intel-gt-next

Tue, 12 May 2026 10:16:35 +0200

Merge drm/drm-next into drm-intel-gt-nextBackmerging to pull in commit 5401b9adebc9 ("i915: don't usea vma that didn't match the context VM") to revert it.Signed-off-by: Joonas Lahtinen List of files: /linux/drivers/base/Kconfig

c53ed3e99920df6a90553c89a1c053aa0776841e - Merge drm/drm-next into drm-xe-next

Fri, 08 May 2026 16:19:45 +0200

Merge drm/drm-next into drm-xe-nextBringing in recent display changes.Signed-off-by: Thomas Hellström List of files: /linux/drivers/base/Kconfig

cafac16b6207b88ad92fbba1169ae4f43865cb0d - Merge drm/drm-next into drm-misc-next

Mon, 27 Apr 2026 10:49:13 +0200

Merge drm/drm-next into drm-misc-nextGetting fixes and updates from v7.1-rc1.Signed-off-by: Thomas Zimmermann List of files: /linux/drivers/base/Kconfig

0fc8f6200d2313278fbf4539bbab74677c685531 - Merge drm/drm-fixes into drm-misc-fixes

Mon, 27 Apr 2026 10:26:49 +0200

Merge drm/drm-fixes into drm-misc-fixesGetting fixes and updates from v7.1-rc1.Signed-off-by: Thomas Zimmermann List of files: /linux/drivers/base/Kconfig

4793dae01f47754e288cdbb3a22581cac2317f2b - Merge tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core

Tue, 14 Apr 2026 04:03:11 +0200

Merge tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-corePull driver core updates from Danilo Krummrich: "debugfs: - Fix NULL pointer dereference in debugfs_create_str() - Fix misplaced EXPORT_SYMBOL_GPL for debugfs_create_str() - Fix soundwire debugfs NULL pointer dereference from uninitialized firmware_file device property: - Make fwnode flags modifications thread safe; widen the field to unsigned long and use set_bit() / clear_bit() based accessors - Document how to check for the property presence devres: - Separate struct devres_node from its "subclasses" (struct devres, struct devres_group); give struct devres_node its own release and free callbacks for per-type dispatch - Introduce struct devres_action for devres actions, avoiding the ARCH_DMA_MINALIGN alignment overhead of struct devres - Export struct devres_node and its init/add/remove/dbginfo primitives for use by Rust Devres - Fix missing node debug info in devm_krealloc() - Use guard(spinlock_irqsave) where applicable; consolidate unlock paths in devres_release_group() driver_override: - Convert PCI, WMI, vdpa, s390/cio, s390/ap, and fsl-mc to the generic driver_override infrastructure, replacing per-bus driver_override strings, sysfs attributes, and match logic; fixes a potential UAF from unsynchronized access to driver_override in bus match() callbacks - Simplify __device_set_driver_override() logic kernfs: - Send IN_DELETE_SELF and IN_IGNORED inotify events on kernfs file and directory removal - Add corresponding selftests for memcg platform: - Allow attaching software nodes when creating platform devices via a new 'swnode' field in struct platform_device_info - Add kerneldoc for struct platform_device_info software node: - Move software node initialization from postcore_initcall() to driver_init(), making it available early in the boot process - Move kernel_kobj initialization (ksysfs_init) earlier to support the above - Remove software_node_exit(); dead code in a built-in unit SoC: - Introduce of_machine_read_compatible() and of_machine_read_model() OF helpers and export soc_attr_read_machine() to replace direct accesses to of_root from SoC drivers; also enables CONFIG_COMPILE_TEST coverage for these drivers sysfs: - Constify attribute group array pointers to 'const struct attribute_group *const *' in sysfs functions, device_add_groups() / device_remove_groups(), and struct class Rust: - Devres: - Embed struct devres_node directly in Devres instead of going through devm_add_action(), avoiding the extra allocation and the unnecessary ARCH_DMA_MINALIGN alignment - I/O: - Turn IoCapable from a marker trait into a functional trait carrying the raw I/O accessor implementation (io_read / io_write), providing working defaults for the per-type Io methods - Add RelaxedMmio wrapper type, making relaxed accessors usable in code generic over the Io trait - Remove overloaded per-type Io methods and per-backend macros from Mmio and PCI ConfigSpace - I/O (Register): - Add IoLoc trait and generic read/write/update methods to the Io trait, making I/O operations parameterizable by typed locations - Add register! macro for defining hardware register types with typed bitfield accessors backed by Bounded values; supports direct, relative, and array register addressing - Add write_reg() / try_write_reg() and LocatedRegister trait - Update PCI sample driver to demonstrate the register! macro Example: ``` register! { /// UART control register. CTRL(u32) @ 0x18 { /// Receiver enable. 19:19 rx_enable => bool; /// Parity configuration. 14:13 parity ?=> Parity; } /// FIFO watermark and counter register. WATER(u32) @ 0x2c { /// Number of datawords in the receive FIFO. 26:24 rx_count; /// RX interrupt threshold. 17:16 rx_water; } } impl WATER { fn rx_above_watermark(&self) -> bool { self.rx_count() > self.rx_water() } } fn init(bar: &pci::Bar) { let water = WATER::zeroed() .with_const_rx_water::<1>(); // > 3 would not compile bar.write_reg(water); let ctrl = CTRL::zeroed() .with_parity(Parity::Even) .with_rx_enable(true); bar.write_reg(ctrl); } fn handle_rx(bar: &pci::Bar) { if bar.read(WATER).rx_above_watermark() { // drain the FIFO } } fn set_parity(bar: &pci::Bar, parity: Parity) { bar.update(CTRL, |r| r.with_parity(parity)); } ``` - IRQ: - Move 'static bounds from where clauses to trait declarations for IRQ handler traits - Misc: - Enable the generic_arg_infer Rust feature - Extend Bounded with shift operations, single-bit bool conversion, and const get() Misc: - Make deferred_probe_timeout default a Kconfig option - Drop auxiliary_dev_pm_ops; the PM core falls back to driver PM callbacks when no bus type PM ops are set - Add conditional guard support for device_lock() - Add ksysfs.c to the DRIVER CORE MAINTAINERS entry - Fix kernel-doc warnings in base.h - Fix stale reference to memory_block_add_nid() in documentation"* tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (67 commits) bus: fsl-mc: use generic driver_override infrastructure s390/ap: use generic driver_override infrastructure s390/cio: use generic driver_override infrastructure vdpa: use generic driver_override infrastructure platform/wmi: use generic driver_override infrastructure PCI: use generic driver_override infrastructure driver core: make software nodes available earlier software node: remove software_node_exit() kernel: ksysfs: initialize kernel_kobj earlier MAINTAINERS: add ksysfs.c to the DRIVER CORE entry drivers/base/memory: fix stale reference to memory_block_add_nid() device property: Document how to check for the property presence soundwire: debugfs: initialize firmware_file to empty string debugfs: fix placement of EXPORT_SYMBOL_GPL for debugfs_create_str() debugfs: check for NULL pointer in debugfs_create_str() driver core: Make deferred_probe_timeout default a Kconfig option driver core: simplify __device_set_driver_override() clearing logic driver core: auxiliary bus: Drop auxiliary_dev_pm_ops device property: Make modifications of fwnode "flags" thread safe rust: devres: embed struct devres_node directly ... List of files: /linux/drivers/base/Kconfig

56e3ee721b33bdc4ce0765d370983aa4384f8a59 - driver core: Make deferred_probe_timeout default a Kconfig option

Sat, 14 Mar 2026 09:49:16 +0100

driver core: Make deferred_probe_timeout default a Kconfig optionCode using driver_deferred_probe_check_state() differs from mostEPROBE_DEFER handling in the kernel. Where other EPROBE_DEFER handling(e.g. clks, gpios and regulators) waits indefinitely for suppliers toshow up, code using driver_deferred_probe_check_state() will failafter the deferred_probe_timeout.This is a problem for generic distro kernels which want to support manyboards using a single kernel build. These kernels want as much drivers tobe modular as possible. The initrd also should be as small as possible,so the initrd will *not* have drivers not needing to get the rootfs.Combine this with waiting for a full-disk encryption password inthe initrd and it is pretty much guaranteed that the default 10s timeoutwill be hit, causing probe() failures when drivers on the rootfs happento get modprobe-d before other rootfs modules providing their suppliers.Make the default timeout configurable from Kconfig to allow distro kernelconfigs where many of the supplier drivers are modules to set the defaultthrough Kconfig.Reviewed-by: Saravana Kannan Signed-off-by: Hans de Goede Link: https://patch.msgid.link/20260314084916.10868-1-johannes.goede@oss.qualcomm.com[ Drop deferred_probe_timeout documentation change in kernel-parameters.txt. - Danilo ]Signed-off-by: Danilo Krummrich List of files: /linux/drivers/base/Kconfig

7149ce34dd48886b3f69153c7f5533dd3fd5f47e - Revert "revocable: Add Kunit test cases"

Wed, 04 Feb 2026 15:28:48 +0100

Revert "revocable: Add Kunit test cases"This reverts commit cd7693419bb5abd91ad2f407dab69c480e417a61.The new revocable functionality is fundamentally broken and at a minimumneeds to be redesigned.Drop the revocable Kunit tests to allow the implementation to be reverted.Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260204142849.22055-3-johan@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux/drivers/base/Kconfig

c5048ddee936ca5ce0aeb79172ce512130779d31 - driver core: disable revocable code from build

Tue, 03 Feb 2026 13:30:37 +0100

driver core: disable revocable code from buildThe revocable code is still under active discussion, and there is noin-kernel users of it. So disable it from the build for now so that noone suffers from it being present in the tree, yet leave it in thesource tree so that others can easily test it by reverting this commitand building off of it for future releases.Acked-by: Danilo Krummrich Link: https://patch.msgid.link/2026020307-rimmed-dreamy-5a67@gregkhReviewed-by: Tzung-Bi Shih Signed-off-by: Greg Kroah-Hartman List of files: /linux/drivers/base/Kconfig

cd7693419bb5abd91ad2f407dab69c480e417a61 - revocable: Add Kunit test cases

Fri, 16 Jan 2026 09:02:34 +0100

revocable: Add Kunit test casesAdd Kunit test cases for the revocable API.The test cases cover the following scenarios:- Basic: Verifies that a consumer can successfully access the resource provided via the provider.- Revocation: Verifies that after the provider revokes the resource, the consumer correctly receives a NULL pointer on a subsequent access.- Try Access Macro: Same as "Revocation" but uses the REVOCABLE_TRY_ACCESS_WITH() and REVOCABLE_TRY_ACCESS_SCOPED().A way to run the test:$ ./tools/testing/kunit/kunit.py run \ --kconfig_add CONFIG_REVOCABLE_KUNIT_TEST=y \ revocable_testSigned-off-by: Tzung-Bi Shih Link: https://patch.msgid.link/20260116080235.350305-3-tzungbi@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux/drivers/base/Kconfig

a4a508df2aa34f8650afde54ea804321c618f45f - Merge tag 'v6.18' into next

Sat, 13 Dec 2025 10:18:20 +0100

Merge tag 'v6.18' into nextSync up with the mainline to bring in the latest APIs. List of files: /linux/drivers/base/Kconfig

7362b5b493102c6b71827c2da22117b475528f6d - Merge branch 'for-6.19/nintendo' into for-linus

Tue, 02 Dec 2025 14:46:11 +0100

Merge branch 'for-6.19/nintendo' into for-linus- switch to WQ_PERCPU workaueues (Marco Crivellari)- reduce potential initialization blocking time of hid-nintendo (Willy Huang) List of files: /linux/drivers/base/Kconfig

cb9f145f638d7afa633632a9290d6ad06caeb8ee - Merge remote-tracking branch 'drm/drm-next' into msm-next-robclark

Sat, 01 Nov 2025 13:47:30 +0100

Merge remote-tracking branch 'drm/drm-next' into msm-next-robclarkBack-merge drm-next to get caught up.Signed-off-by: Rob Clark List of files: /linux/drivers/base/Kconfig

82ee50252dc891e3f3b32d923bb4f656d300b772 - Merge drm/drm-next into drm-xe-next

Tue, 14 Oct 2025 11:31:49 +0200

Merge drm/drm-next into drm-xe-nextBackmerging to bring in 6.18-rc1.Signed-off-by: Thomas Hellström List of files: /linux/drivers/base/Kconfig