linux-kernel - [PATCH v6 0/8] char: misc: Various cleanup for miscdevice

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Message-Id: <20250714-rfc_miscdev-v6-0-2ed949665bde@oss.qualcomm.com>
Date: Mon, 14 Jul 2025 23:34:11 +0800
From: Zijun Hu <zijun_hu@...oud.com>
To: Arnd Bergmann <arnd@...db.de>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>, 
 Helge Deller <deller@....de>, "David S. Miller" <davem@...emloft.net>, 
 Andreas Larsson <andreas@...sler.com>
Cc: Thadeu Lima de Souza Cascardo <cascardo@...lia.com>, 
 Zijun Hu <zijun_hu@...oud.com>, linux-kernel@...r.kernel.org, 
 linux-parisc@...r.kernel.org, sparclinux@...r.kernel.org, 
 Zijun Hu <zijun.hu@....qualcomm.com>
Subject: [PATCH v6 0/8] char: misc: Various cleanup for miscdevice

This patch series is to do cleanup for:

- Miscdevice APIs
- Miscdevice kunit test cases
- Drivers which use miscdevice APIs

Signed-off-by: Zijun Hu <zijun.hu@....qualcomm.com>
---
Previous discussion link:
https://lore.kernel.org/all/20250620-rfc_miscdev-v1-1-fda25d502a37@oss.qualcomm.com

---
Changes in v6:
- Correct title and commit message as cascardo's suggestion for [PATCH 5/8]
- Link to v5: https://lore.kernel.org/r/20250710-rfc_miscdev-v5-0-b3940297db16@oss.qualcomm.com

Changes in v5:
- Replace space with table in fist patch's Makefile
- Correct title and commit messages
- Link to v4: https://lore.kernel.org/r/20250704-rfc_miscdev-v4-0-b48986112d6a@oss.qualcomm.com

Changes in v4:
- Fix WARNINGs reported by "kernel test robot <lkp@...el.com>"
- Link to v3: https://lore.kernel.org/r/20250702-rfc_miscdev-v3-0-d8925de7893d@oss.qualcomm.com

Changes in v3:
- Drop the change which allocates 4 fixed minors for watchdog
- Correct tile and commit message
- Link to v2: https://lore.kernel.org/r/20250701-rfc_miscdev-v2-0-3eb22bf533be@oss.qualcomm.com

---
Zijun Hu (8):
      char: misc: Move drivers/misc/misc_minor_kunit.c to drivers/char/
      char: misc: Adapt and add test cases for simple minor space division
      char: misc: Disallow registering miscdevice whose minor > MISC_DYNAMIC_MINOR
      char: misc: Add a case to test registering miscdevice again without reinitialization
      char: misc: Make misc_register() reentry for miscdevice who wants dynamic minor
      char: misc: Does not request module for miscdevice with dynamic minor
      char: misc: Register fixed minor EISA_EEPROM_MINOR in linux/miscdevice.h
      sparc: kernel: apc: Remove macro APC_MINOR definition

 arch/sparc/kernel/apc.c                   |  3 +-
 drivers/char/Makefile                     |  1 +
 drivers/char/misc.c                       | 16 +++++-
 drivers/{misc => char}/misc_minor_kunit.c | 95 +++++++++++++++++++++----------
 drivers/misc/Makefile                     |  1 -
 drivers/parisc/eisa_eeprom.c              |  2 -
 include/linux/miscdevice.h                |  9 +++
 7 files changed, 89 insertions(+), 38 deletions(-)
---
base-commit: db15ec7abd33ce245120f36be91f56f0ba0b247e
change-id: 20250701-rfc_miscdev-35dd3310c7c0

Best regards,
-- 
Zijun Hu <zijun.hu@....qualcomm.com>