[PATCH v3 0/2] char: misc: improve test and dynamic allocation

[Thadeu Lima de Souza Cascardo]

This includes a change that prevents dynamic allocation from using a minor
number that belongs to the historically static reserved range, which is
still used by some drivers.

It also improves the test, including a lot of corner cases, specially ones
that would fail before past fixes.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxx>
---
Changes in v3:
- remove code around DYNAMIC_MINORS and the backwards allocation
- try to open devices in tests by using init_mknod plus filp_open
- Link to v2: https://lore.kernel.org/r/20250307-misc-dynrange-v2-0-6fe19032ef76@xxxxxxxxxx

---
Thadeu Lima de Souza Cascardo (2):
      char: misc: restrict the dynamic range to exclude reserved minors
      char: misc: add test cases

 drivers/char/misc.c             |  28 +-
 drivers/misc/misc_minor_kunit.c | 578 +++++++++++++++++++++++++++++++++++++++-
 2 files changed, 581 insertions(+), 25 deletions(-)
---
base-commit: 2dc25093218f5d42391549de6fe45e1aa9325676
change-id: 20250307-misc-dynrange-d54c92a5e319
prerequisite-change-id: 20250317-misc-chrdev-b26b572a47fc:v1
prerequisite-patch-id: d60dd6f7235bae2a8707c3169969b534be60de52

Best regards,
-- 
Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxx>