char and misc drivers · Supported

Maintainers

• M Arnd Bergmann <arnd@arndb.de>
• M Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Paths

• F drivers/char/
• F drivers/misc/
• F include/linux/miscdevice.h
• F rust/kernel/miscdevice.rs
• F samples/rust/rust_misc_device.rs
• X drivers/char/agp/
• X drivers/char/hw_random/
• X drivers/char/ipmi/
• X drivers/char/random.c
• X drivers/char/tpm/

Last 30 days

Active reviewers (last 30 days)

• Ijae Kim <hidden>
  1 attestation (1 Co-developed-by) · last on 2026-06-23

Recent patches

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

• HOTtoday [PATCH 40/42] misc: fastrpc: Use devm_of_reserved_mem_device_init()
  2026-07-05 · Mukesh Ojha <hidden>
• COOLING14d [PATCH v2] misc: xilinx_sdfec: validate LDPC code register offsets
  2026-06-29 · Yousef Alhouseen <hidden>
• COLD15d [PATCH] misc: xilinx_sdfec: validate LDPC code register offsets
  2026-06-24 · Yousef Alhouseen <hidden>
• COLD21d [PATCH] char: xilinx_hwicap: unregister class on init errors
  2026-06-23 · Myeonghun Pak <hidden>
• COLD35d [PATCH net-next v2 11/14] misc: tc956x_pci: add TC956x/QPS615 support
  2026-06-05 · Alex Elder <hidden>
• COLD40d [PATCH] char: xilinx_hwicap: replace in_be32/out_be32 with ioread32be/iowrite32be
  2026-06-02 · Rosen Penev <hidden>
• COLD46d REVIEWED: 14 (14M) [PATCH net-next v5 13/13] misc: lan966x-pci: dts: add fdma interrupt to overlay
  2026-05-20 · Daniel Machon <daniel.machon@microchip.com>
• COLD46d REVIEWED: 14 (14M) [PATCH net-next v5 12/13] misc: lan966x-pci: dts: extend cpu reg to cover PCIE DBI space
  2026-05-20 · Daniel Machon <daniel.machon@microchip.com>
• COLD57d [PATCH v8 5/5] misc: pci_endpoint_test: Add AER error handlers
  2026-05-18 · Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org>
• DORMANTno replies [PATCH] ARM: Move Footbridge-specific header into mach-footbridge
  2026-05-17 · Ethan Nelson-Moore <hidden>
• COLD34d [PATCH] ARM: footbridge: convert to sparse IRQs
  2026-05-10 · Ethan Nelson-Moore <hidden>
• STALE61d REVIEWED: 14 (14M) [PATCH net-next v4 13/13] misc: lan966x-pci: dts: add fdma interrupt to overlay
  2026-05-08 · Daniel Machon <daniel.machon@microchip.com>
• STALE61d REVIEWED: 14 (14M) [PATCH net-next v4 12/13] misc: lan966x-pci: dts: extend cpu reg to cover PCIE DBI space
  2026-05-08 · Daniel Machon <daniel.machon@microchip.com>
• STALE68d REVIEWED: 14 (14M) [PATCH net-next v3 13/13] misc: lan966x-pci: dts: add fdma interrupt to overlay
  2026-05-04 · Daniel Machon <daniel.machon@microchip.com>
• STALE68d REVIEWED: 14 (14M) [PATCH net-next v3 12/13] misc: lan966x-pci: dts: extend cpu reg to cover PCIE DBI space
  2026-05-04 · Daniel Machon <daniel.machon@microchip.com>
• STALE76d [RFC PATCH v1 5/9] uaccess: Switch to copy_{to/from}_user_partial() when relevant
  2026-04-27 · "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
• STALE92d REVIEWED: 7 (7M) [PATCH v4 13/21] hpet: replace deprecated mmap hook with mmap_prepare
  2026-03-20 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE92d REVIEWED: 7 (7M) [PATCH v4 12/21] misc: open-dice: replace deprecated mmap hook with mmap_prepare
  2026-03-20 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE116d REVIEWED: 7 (7M) [PATCH v3 08/16] hpet: replace deprecated mmap hook with mmap_prepare
  2026-03-19 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE116d REVIEWED: 7 (7M) [PATCH v3 07/16] misc: open-dice: replace deprecated mmap hook with mmap_prepare
  2026-03-19 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• COLD56d Re: [PATCH v7 0/4] PCI: Add support for resetting the Root Ports in a platform specific way
  2026-03-17 · Niklas Cassel <cassel@kernel.org>
• STALE117d [PATCH v2 08/16] hpet: replace deprecated mmap hook with mmap_prepare
  2026-03-16 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE117d [PATCH v2 07/16] misc: open-dice: replace deprecated mmap hook with mmap_prepare
  2026-03-16 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE119d [PATCH 08/15] hpet: replace deprecated mmap hook with mmap_prepare
  2026-03-12 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE119d [PATCH 07/15] misc: open-dice: replace deprecated mmap hook with mmap_prepare
  2026-03-12 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• COLD56d [PATCH v7 4/4] misc: pci_endpoint_test: Add AER error handlers
  2026-03-10 · Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org>
• STALE141d [PATCH 3/4] misc: pci_endpoint_test: Add BAR skip mask and NVIDIA Tegra EP device IDs
  2026-02-17 · Manikanta Maddireddy <hidden>
• STALE207d LANDED [PATCH 2/4] misc: rp1: drop overlay support
  2025-12-18 · Andrea della Porta <andrea.porta@suse.com>
• STALE211d REVIEWED: 14 (14M) [PATCH v2 1/2] lkdtm/bugs: Add cases for BUG and PANIC occurring in hardirq context
  2025-12-06 · Ard Biesheuvel <ardb@kernel.org>
• STALE223d [PATCH 1/2] lkdtm/bugs: Add cases for BUG and PANIC occurring in hardirq context
  2025-11-12 · Ard Biesheuvel <hidden>

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.

• STALE68d REVIEWED: 14 (14M) [PATCH net-next v3 12/13] misc: lan966x-pci: dts: extend cpu reg to cover PCIE DBI space
  2026-05-04 · Daniel Machon <daniel.machon@microchip.com> · 1 Tested-by
• STALE68d REVIEWED: 14 (14M) [PATCH net-next v3 13/13] misc: lan966x-pci: dts: add fdma interrupt to overlay
  2026-05-04 · Daniel Machon <daniel.machon@microchip.com> · 1 Tested-by
• STALE61d REVIEWED: 14 (14M) [PATCH net-next v4 12/13] misc: lan966x-pci: dts: extend cpu reg to cover PCIE DBI space
  2026-05-08 · Daniel Machon <daniel.machon@microchip.com> · 1 Tested-by
• STALE61d REVIEWED: 14 (14M) [PATCH net-next v4 13/13] misc: lan966x-pci: dts: add fdma interrupt to overlay
  2026-05-08 · Daniel Machon <daniel.machon@microchip.com> · 1 Tested-by
• COLD46d REVIEWED: 14 (14M) [PATCH net-next v5 12/13] misc: lan966x-pci: dts: extend cpu reg to cover PCIE DBI space
  2026-05-20 · Daniel Machon <daniel.machon@microchip.com> · 1 Tested-by
• COLD46d REVIEWED: 14 (14M) [PATCH net-next v5 13/13] misc: lan966x-pci: dts: add fdma interrupt to overlay
  2026-05-20 · Daniel Machon <daniel.machon@microchip.com> · 1 Tested-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.

• STALE141d [PATCH 3/4] misc: pci_endpoint_test: Add BAR skip mask and NVIDIA Tegra EP device IDs
  2026-02-17 · Manikanta Maddireddy <hidden>
• COLD56d [PATCH v7 4/4] misc: pci_endpoint_test: Add AER error handlers
  2026-03-10 · Manivannan Sadhasivam via B4 Relay <devnull+manivannan.sadhasivam.oss.qualcomm.com@kernel.org>
• STALE119d [PATCH 07/15] misc: open-dice: replace deprecated mmap hook with mmap_prepare
  2026-03-12 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE119d [PATCH 08/15] hpet: replace deprecated mmap hook with mmap_prepare
  2026-03-12 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• DORMANTno replies [PATCH] ARM: Move Footbridge-specific header into mach-footbridge
  2026-05-17 · Ethan Nelson-Moore <hidden>