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 [PATCH 00/42] of: reserved_mem: Introduce devres helpers and convert drivers
  2026-07-05 19:41 · 1 reply in 7d · Mukesh Ojha <hidden>

Recent patches

Most-recent 30 patches in this subsystem on linuxppc-dev (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>
• COLD46d [PATCH] misc: eeprom: at24: Make VCC supply description requirement optional
  2026-05-24 · Paul Menzel <hidden>
• COLD29d [PATCH 04/11] treewide: Convert struct kernel_param_ops initializers to DEFINE_KERNEL_PARAM_OPS
  2026-05-21 · Kees Cook <kees@kernel.org>
• COLD52d [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>
• COLD50d [PATCH v2 1/2] lkdtm/powerpc: add isync after slbmte to enforce SLB update ordering
  2026-05-18 · Sayali Patil <hidden>
• COLD50d [PATCH v2 2/2] lkdtm/powerpc: add PPC_RADIX_TLBIEL test for radix MCE validation
  2026-05-18 · Sayali Patil <hidden>
• COLD58d [PATCH 3/3] lkdtm/powerpc: add PPC_RADIX_TLBIEL test for radix MCE validation
  2026-05-06 · Sayali Patil <hidden>
• COLD58d [PATCH 2/3] lkdtm/powerpc: add isync after slbmte to enforce SLB update ordering
  2026-05-06 · Sayali Patil <hidden>
• COLD49d REVIEWED: 6 (5M) [PATCH v5] char/nvram: Remove redundant nvram_mutex
  2026-04-28 · Venkat Rao Bagalkote <hidden>
• STALE72d [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>
• STALE87d [PATCH v4] char/nvram: Remove redundant nvram_mutex
  2026-03-30 · Venkat Rao Bagalkote <hidden>
• STALE98d [PATCH v3] char: nvram: Remove unused nvram_mutex to fix -Wunused-variable warning
  2026-03-30 · Venkat Rao Bagalkote <hidden>
• STALE107d Re: [PATCH v2] char: nvram: Remove unused nvram_mutex to fix -Wunused-variable warning
  2026-03-23 · "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
• STALE107d [PATCH v2] char: nvram: Remove unused nvram_mutex to fix -Wunused-variable warning
  2026-03-23 · Venkat Rao Bagalkote <hidden>
• STALE109d [PATCH] char: nvram: Remove unused nvram_mutex to fix -Wunused-variable warning
  2026-03-23 · Venkat Rao Bagalkote <hidden>
• COLD51d 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>
• COLD51d [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>
• STALE120d [PATCH v1 15/16] mm: rename zap_vma_ptes() to zap_special_vma_range()
  2026-02-27 · "David Hildenbrand (Arm)" <david@kernel.org>
• STALE116d [PATCH v10 7/8] misc: pci_endpoint_test: Add BAR subrange mapping test case
  2026-01-24 · Koichiro Den <hidden>
• STALE171d REVIEWED: 10 (9M) [PATCH v3 23/24] mm: rename CONFIG_MEMORY_BALLOON -> CONFIG_BALLOON
  2026-01-19 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d REVIEWED: 10 (9M) [PATCH v3 22/24] mm: rename CONFIG_BALLOON_COMPACTION to CONFIG_BALLOON_MIGRATION
  2026-01-19 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d REVIEWED: 10 (9M) [PATCH v3 20/24] mm: rename balloon_compaction.(c|h) to balloon.(c|h)
  2026-01-19 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d REVIEWED: 10 (9M) [PATCH v3 07/24] vmw_balloon: stop using the balloon_dev_info lock
  2026-01-19 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d REVIEWED: 9 (9M) [PATCH v3 05/24] mm/balloon_compaction: centralize basic page migration handling
  2026-01-19 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d REVIEWED: 10 (9M) [PATCH v3 02/24] vmw_balloon: remove vmballoon_compaction_init()
  2026-01-19 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d REVIEWED: 11 (10M) [PATCH v3 01/24] vmw_balloon: adjust BALLOON_DEFLATE when deflating while migrating
  2026-01-19 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d [PATCH v2 22/23] mm: rename CONFIG_MEMORY_BALLOON -> CONFIG_BALLOON
  2026-01-15 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d [PATCH v2 21/23] mm: rename CONFIG_BALLOON_COMPACTION to CONFIG_BALLOON_MIGRATION
  2026-01-15 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d [PATCH v2 19/23] mm: rename balloon_compaction.(c|h) to balloon.(c|h)
  2026-01-15 · "David Hildenbrand (Red Hat)" <david@kernel.org>
• STALE171d [PATCH v2 06/23] vmw_balloon: stop using the balloon_dev_info lock
  2026-01-15 · "David Hildenbrand (Red Hat)" <david@kernel.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.

• COLD49d REVIEWED: 6 (5M) [PATCH v5] char/nvram: Remove redundant nvram_mutex
  2026-04-28 · Venkat Rao Bagalkote <hidden> · 1 Reviewed-by, 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.

• STALE116d [PATCH v10 7/8] misc: pci_endpoint_test: Add BAR subrange mapping test case
  2026-01-24 · Koichiro Den <hidden>
• COLD51d [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>