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

Most active threads (last 7 days)

• HOTtoday [RFC PATCH v1 0/8] Arm Core Local Accelerator Driver
  2026-07-17 10:48 · 8 replies in 7d · Ryan Roberts <ryan.roberts@arm.com>

Active reviewers (last 30 days)

• Akshay Gupta <hidden>
  10 attestations (10 Reviewed-by) · last on 2026-07-10
• Jean-Philippe Brucker <jpb@kernel.org>
  3 attestations (3 Co-developed-by) · last on 2026-07-17
• Ryan Roberts <ryan.roberts@arm.com>
  2 attestations (2 Co-developed-by) · last on 2026-07-17

Recent patches

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

• HOTtoday [RFC PATCH v1 7/8] misc/arm-cla: Manage domain contexts
  2026-07-17 · Ryan Roberts <ryan.roberts@arm.com>
• HOTtoday [RFC PATCH v1 4/8] misc/arm-cla: Initialize devices on CPU bringup
  2026-07-17 · Ryan Roberts <ryan.roberts@arm.com>
• HOTtoday [RFC PATCH v1 8/8] misc/arm-cla: Add userspace interface
  2026-07-17 · Ryan Roberts <ryan.roberts@arm.com>
• HOTtoday [RFC PATCH v1 6/8] misc/arm-cla: Set up memory translation context
  2026-07-17 · Ryan Roberts <ryan.roberts@arm.com>
• HOTtoday [RFC PATCH v1 3/8] misc/arm-cla: Probe firmware-described devices
  2026-07-17 · Ryan Roberts <ryan.roberts@arm.com>
• HOTtoday [RFC PATCH v1 5/8] misc/arm-cla: Accelerator context save and restore
  2026-07-17 · Ryan Roberts <ryan.roberts@arm.com>
• HOTtoday [RFC PATCH v1 1/8] misc/arm-cla: Add driver skeleton and documentation
  2026-07-17 · Ryan Roberts <ryan.roberts@arm.com>
• HOTtoday [RFC PATCH v1 2/8] misc/arm-cla: Add launch operation helpers
  2026-07-17 · Ryan Roberts <ryan.roberts@arm.com>
• COOLING9d REVIEWED: 1 (0M) [PATCH v4 6/8] misc: amd-sbi: Add SBTSI ioctl register transfer interface
  2026-07-10 · Akshay Gupta <hidden>
• COOLING9d REVIEWED: 1 (0M) [PATCH v4 5/8] misc: amd-sbi: Add support for SB-TSI over I3C
  2026-07-10 · Akshay Gupta <hidden>
• COOLING9d REVIEWED: 1 (0M) [PATCH v4 4/8] misc: amd-sbi: Consolidate Common SBTSI Probe Path
  2026-07-10 · Akshay Gupta <hidden>
• COOLING9d REVIEWED: 1 (0M) [PATCH v4 3/8] hwmon/misc: amd-sbi: Move sbtsi register transfer to core abstraction
  2026-07-10 · Akshay Gupta <hidden>
• COOLING9d REVIEWED: 1 (0M) [PATCH v4 1/8] hwmon/misc: amd-sbi: Move core sbtsi support from hwmon to misc
  2026-07-10 · Akshay Gupta <hidden>
• COLD25d REVIEWED: 1 (0M) [PATCH v3 5/8] misc: amd-sbi: Add support for SB-TSI over I3C
  2026-06-22 · Akshay Gupta <hidden>
• COLD25d REVIEWED: 1 (0M) [PATCH v3 6/8] misc: amd-sbi: Add SBTSI ioctl register transfer interface
  2026-06-22 · Akshay Gupta <hidden>
• COLD25d REVIEWED: 1 (0M) [PATCH v3 4/8] misc: amd-sbi: Consolidate Common SBTSI Probe Path for I2C and I3C
  2026-06-22 · Akshay Gupta <hidden>
• COLD25d REVIEWED: 1 (0M) [PATCH v3 3/8] hwmon/misc: amd-sbi: Move sbtsi register transfer to core abstraction
  2026-06-22 · Akshay Gupta <hidden>
• COLD25d REVIEWED: 1 (0M) [PATCH v3 1/8] hwmon/misc: amd-sbi: Move core sbtsi support from hwmon to misc
  2026-06-22 · Akshay Gupta <hidden>
• COLD60d [PATCH 12/12] misc/syncobj: add new device
  2026-05-16 · Julian Orth <hidden>
• COLD52d REVIEWED: 1 (0M) [PATCH v2 4/6] misc: amd-sbi: Add support for SB-TSI over I3C
  2026-05-15 · Akshay Gupta <hidden>
• COLD52d REVIEWED: 1 (0M) [PATCH v2 5/6] misc: amd-sbi: Add SBTSI ioctl register transfer interface
  2026-05-15 · Akshay Gupta <hidden>
• COLD52d REVIEWED: 1 (0M) [PATCH v2 3/6] hwmon/misc: amd-sbi: Move sbtsi register transfer to core abstraction
  2026-05-15 · Akshay Gupta <hidden>
• COLD52d REVIEWED: 1 (0M) [PATCH v2 1/6] hwmon/misc: amd-sbi: Move core sbtsi support from hwmon to misc
  2026-05-15 · Akshay Gupta <hidden>
• STALE72d [PATCH] char: applicom: remove low-quality, unused driver
  2026-05-03 · Ethan Nelson-Moore <hidden>
• DORMANTno replies [PATCH] char: dtlk: remove driver for ISA speech synthesizer card
  2026-05-02 · Ethan Nelson-Moore <hidden>
• STALE85d REVIEWED: 18 (18M) [PATCH v3 3/3] misc: Remove old APDS990x driver
  2026-04-25 · Svyatoslav Ryhel <hidden>
• STALE89d [PATCH v2 3/3] misc: Remove old APDS990x driver
  2026-04-19 · Svyatoslav Ryhel <hidden>
• STALE100d [PATCH 4/5] lkdtm/bugs: Add basic Overflow Behavior Types test
  2026-03-31 · Kees Cook <kees@kernel.org>
• STALE110d REVIEWED: 1 (0M) [PATCH v1 5/6] misc: amd-sbi: Add SBTSI ioctl register transfer interface
  2026-03-23 · Akshay Gupta <hidden>
• STALE110d REVIEWED: 1 (0M) [PATCH v1 3/6] misc: amd-sbi: Split SBTSI hwmon sensor handling into a separate entity
  2026-03-23 · Akshay Gupta <hidden>

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.

• STALE177d [RFC PATCH v4 37/38] misc: pci_endpoint_test: Add remote eDMA transfer test mode
  2026-01-18 · Koichiro Den <hidden>
• STALE156d [RFC PATCH v3 2/6] /dev/mem: Add initial documentation of memory_open() and mem_fops
  2026-02-12 · Gabriele Paoloni <hidden>
• STALE156d [RFC PATCH v3 4/6] char: mem: expose devmem helpers for KUnit testing
  2026-02-12 · Gabriele Paoloni <hidden>
• STALE156d [RFC PATCH v3 5/6] char: mem: add KUnit tests for /dev/mem read_mem()
  2026-02-12 · Gabriele Paoloni <hidden>
• STALE124d [PATCH 07/15] misc: open-dice: replace deprecated mmap hook with mmap_prepare
  2026-03-12 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE124d [PATCH 08/15] hpet: replace deprecated mmap hook with mmap_prepare
  2026-03-12 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE110d [PATCH v1 2/6] misc: amd-sbi: Update SBTSI Kconfig to clarify this is BMC driver
  2026-03-23 · Akshay Gupta <hidden>
• DORMANTno replies [PATCH] char: dtlk: remove driver for ISA speech synthesizer card
  2026-05-02 · Ethan Nelson-Moore <hidden>