driver core, kobjects, debugfs and sysfs · Supported

Maintainers

• M Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• M "Rafael J. Wysocki" <rafael@kernel.org>
• M Danilo Krummrich <dakr@kernel.org>

Paths

• F Documentation/core-api/kobject.rst
• F Documentation/driver-api/driver-model/
• F drivers/base/
• F fs/debugfs/
• F fs/sysfs/
• F include/linux/device/
• F include/linux/debugfs.h
• F include/linux/device.h
• F include/linux/fwnode.h
• F include/linux/kobj*
• F include/linux/ksysfs.h
• F include/linux/property.h
• F include/linux/sys_soc.h
• F include/linux/sysfs.h
• F kernel/ksysfs.c
• F lib/kobj*
• F rust/kernel/debugfs.rs
• F rust/kernel/debugfs/
• F rust/kernel/device.rs
• F rust/kernel/device/
• F rust/kernel/device_id.rs
• F rust/kernel/devres.rs
• F rust/kernel/driver.rs
• F rust/kernel/faux.rs
• F rust/kernel/platform.rs
• F rust/kernel/soc.rs
• F samples/rust/rust_debugfs.rs
• F samples/rust/rust_debugfs_scoped.rs
• F samples/rust/rust_driver_platform.rs
• F samples/rust/rust_driver_faux.rs
• F samples/rust/rust_soc.rs

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v10 00/15] iommu/arm-smmu-v3: Implement Runtime/System Sleep ops
  2026-09-08 17:17 · 1 reply in 7d · Pranjal Shrivastava <praan@google.com>
• WARM1d [PATCH v2 0/3] driver core: Constify the signature of device_show/store_*()
  2026-09-07 05:45 · 1 reply in 7d · Thomas Weißschuh <linux@weissschuh.net>
• WARM2d [PATCH v1 0/2] arm64/cpufreq: report and track frequencies above 4.19 GHz
  2026-09-06 16:38 · 1 reply in 7d · Oleg Keri <hidden>
• WARM1d [PATCH v8 00/16] arm64: mediatek: Add M.2 E-key slot on Chromebooks
  2026-09-04 08:42 · 2 replies in 7d · Chen-Yu Tsai <wenst@chromium.org>

Active reviewers (last 30 days)

• Andy Shevchenko <andriy.shevchenko@linux.intel.com>
  2 attestations (2 Reviewed-by) · last on 2026-09-04
• Bartosz Golaszewski <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-09-04
• Jason Gunthorpe <jgg@nvidia.com>
  1 attestation (1 Suggested-by) · last on 2026-09-08
• Xuewen Yan <hidden>
  1 attestation (1 Co-developed-by) · last on 2026-08-11

Recent patches

Most-recent 30 patches in this subsystem on linux-arm-kernel (capped at 30), ordered by date desc.

• HOTtoday [PATCH v10 07/15] platform-msi: Introduce platform_device_msi_rewrite()
  2026-09-08 · Pranjal Shrivastava <praan@google.com>
• WARM1d [PATCH v2 3/3] driver core: Constify the signature of device_show/store_*()
  2026-09-07 · Thomas Weißschuh <linux@weissschuh.net>
• DORMANTno replies [PATCH v1 2/2] cpufreq: update capacity_freq_ref when the boost state changes
  2026-09-06 · Oleg Keri <hidden>
• WARM1d REVIEWED: 9 (8M) [PATCH v8 02/16] device property: Add fwnode_graph_get_next_port_endpoint()
  2026-09-04 · Chen-Yu Tsai <wenst@chromium.org>
• WARM1d REVIEWED: 9 (8M) [PATCH v8 01/16] device property: Add fwnode_graph_get_port_by_id()
  2026-09-04 · Chen-Yu Tsai <wenst@chromium.org>
• COLD15d [PATCH] treewide: Fix typos in comments
  2026-08-24 · Chhabilal Dangal <hidden>
• COOLING12d Re: [External] Re: [PATCH v3] arm64: topology: add source check in arch_cpu_idle_enter()
  2026-08-19 · Beata Michalska <hidden>
• COOLING12d [PATCH v3] arm64: topology: add source check in arch_cpu_idle_enter()
  2026-08-11 · Sean Wang <hidden>
• COLD28d [PATCH v2] arm64: topology: add source check in arch_cpu_idle_enter()
  2026-08-10 · seanwang1 <hidden>
• COLD27d REVIEWED: 1 (0M) [PATCH net-next v2 1/7] clk: Add devm_clk_bulk_get_enable()
  2026-08-06 · Suraj Gupta <hidden>
• COOLING12d IN MM [PATCH] drivers/base, mm: move arch_numa.c to mm/
  2026-08-06 · "Mike Rapoport (Microsoft)" <rppt@kernel.org>
• COLD40d [PATCH] firmware_loader: Add /lib/firmware/vendor paths for Apple ARM platforms
  2026-07-30 · Neal Gompa <neal@gompa.dev>
• COLD29d REVIEWED: 9 (8M) [PATCH v7 02/16] device property: Add fwnode_graph_get_next_port_endpoint()
  2026-07-24 · Chen-Yu Tsai <wenst@chromium.org>
• COLD29d REVIEWED: 9 (8M) [PATCH v7 01/16] device property: Add fwnode_graph_get_port_by_id()
  2026-07-24 · Chen-Yu Tsai <wenst@chromium.org>
• COLD27d [PATCH net-next 1/7] clk: Add devm_clk_bulk_get_enable()
  2026-07-23 · Suraj Gupta <hidden>
• COOLING4d REVIEWED: 9 (8M) [PATCH v6 02/16] device property: Add fwnode_graph_get_next_port_endpoint()
  2026-07-21 · Chen-Yu Tsai <wenst@chromium.org>
• COOLING4d REVIEWED: 9 (8M) [PATCH v6 01/16] device property: Add fwnode_graph_get_port_by_id()
  2026-07-21 · Chen-Yu Tsai <wenst@chromium.org>
• COOLING6d [PATCH 01/16] drivers: arch_numa: move percpu set up code to arch
  2026-07-15 · Yang Shi <hidden>
• COLD50d REVIEWED: 9 (8M) [PATCH v5 02/16] device property: Add fwnode_graph_get_next_port_endpoint()
  2026-07-15 · Chen-Yu Tsai <wenst@chromium.org>
• COLD50d REVIEWED: 9 (8M) [PATCH v5 01/16] device property: Add fwnode_graph_get_port_by_id()
  2026-07-15 · Chen-Yu Tsai <wenst@chromium.org>
• DORMANTno replies [PATCH 3/3] driver core: Constify the signature of device_show/store_*()
  2026-07-14 · Thomas Weißschuh <linux@weissschuh.net>
• COLD57d REVIEWED: 9 (8M) [PATCH v4 02/14] device property: Add fwnode_graph_get_next_port_endpoint()
  2026-07-09 · Chen-Yu Tsai <wenst@chromium.org>
• COLD57d REVIEWED: 9 (8M) [PATCH v4 01/14] device property: Add fwnode_graph_get_port_by_id()
  2026-07-09 · Chen-Yu Tsai <wenst@chromium.org>
• STALE63d [PATCH v3 02/13] device property: Add fwnode_graph_get_next_port_endpoint()
  2026-07-03 · Chen-Yu Tsai <wenst@chromium.org>
• STALE63d REVIEWED: 9 (8M) [PATCH v3 01/13] device property: Add fwnode_graph_get_port_by_id()
  2026-07-03 · Chen-Yu Tsai <wenst@chromium.org>
• HOTtoday REVIEWED: 13 (12M) [PATCH v3 1/4] device property: Introduce fwnode_graph_for_each_endpoint_scoped()
  2026-06-25 · <hidden>
• STALE75d REVIEWED: 9 (8M) [PATCH v2 1/4] device property: Introduce fwnode_graph_for_each_endpoint_scoped()
  2026-06-24 · <hidden>
• STALE76d [PATCH 1/4] device property: Introduce fwnode_graph_for_each_endpoint_scoped()
  2026-06-22 · <hidden>
• STALE71d [PATCH v2 02/16] device property: Add fwnode_graph_get_next_port_endpoint()
  2026-06-10 · Chen-Yu Tsai <wenst@chromium.org>
• STALE71d [PATCH v2 01/16] device property: Add fwnode_graph_get_port_by_id()
  2026-06-10 · Chen-Yu Tsai <wenst@chromium.org>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE112d REVIEWED: 19 (18M) [PATCH v7 3/3] driver core: Avoid warning when removing a device while its supplier is unbinding
  2026-05-11 · Herve Codina <herve.codina@bootlin.com> · 2 Reviewed-by
• STALE75d REVIEWED: 9 (8M) [PATCH v2 1/4] device property: Introduce fwnode_graph_for_each_endpoint_scoped()
  2026-06-24 · <hidden> · 2 Reviewed-by
• HOTtoday REVIEWED: 13 (12M) [PATCH v3 1/4] device property: Introduce fwnode_graph_for_each_endpoint_scoped()
  2026-06-25 · <hidden> · 3 Reviewed-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE196d [PATCH 6/6] platform-msi: Remove stale comment
  2026-02-18 · Marc Zyngier <maz@kernel.org>
• STALE172d [PATCH 1/9] driver core: Enable suppliers to implement fine grained sync_state support
  2026-03-03 · Ulf Hansson <hidden>
• STALE172d [PATCH 2/9] driver core: Add dev_set_drv_queue_sync_state()
  2026-03-03 · Ulf Hansson <hidden>
• STALE158d [PATCH v3 7/9] driver core: Replace dev->dma_coherent with DEV_FLAG_DMA_COHERENT
  2026-04-03 · Douglas Anderson <dianders@chromium.org>
• STALE116d [PATCH 03/11] arm64: smp: define setup_per_cpu_areas()
  2026-04-29 · Yang Shi <hidden>
• STALE118d [PATCH v3 03/13] driver core: Add documentation for dev_set_drv_sync_state()
  2026-05-08 · Ulf Hansson <hidden>
• STALE118d [PATCH v3 04/13] driver core: Add dev_set_drv_queue_sync_state()
  2026-05-08 · Ulf Hansson <hidden>
• DORMANTno replies [PATCH 3/3] driver core: Constify the signature of device_show/store_*()
  2026-07-14 · Thomas Weißschuh <linux@weissschuh.net>
• COOLING6d [PATCH 01/16] drivers: arch_numa: move percpu set up code to arch
  2026-07-15 · Yang Shi <hidden>