3 Commits

Author	SHA1	Message	Date
Zijun Hu	2334668aaf	char: misc: Add a case to test registering miscdevice again without reinitialization ... For miscdevice who wants dynamic minor, add a cast to test if it can be successfully registered again without reinitialization: 1) Provide Both miscdevice @dev_A and @dev_B want to request dynamic minor by initializing their minor to MISC_DYNAMIC_MINOR. 2) Register then de-register @dev_A. 3) Register @dev_B. 4) Register @dev_A again without reinitialization. 5) Check if @dev_A can be successfully registered. Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com> Link: https://lore.kernel.org/r/20250714-rfc_miscdev-v6-4-2ed949665bde@oss.qualcomm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2025-08-19 12:41:17 +02:00
Zijun Hu	f4e47affdb	char: misc: Adapt and add test cases for simple minor space division ... Adapt and add test cases for next change which regards minor whose value > macro MISC_DYNAMIC_MINOR as invalid parameter when register miscdevice, hence get a simple minor space division below: < MISC_DYNAMIC_MINOR: fixed minor code == MISC_DYNAMIC_MINOR: indicator to request dynamic minor code > MISC_DYNAMIC_MINOR: dynamic minor code requested Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com> Link: https://lore.kernel.org/r/20250714-rfc_miscdev-v6-2-2ed949665bde@oss.qualcomm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2025-08-19 12:41:17 +02:00
Zijun Hu	8ac646d6df	char: misc: Move drivers/misc/misc_minor_kunit.c to drivers/char/ ... drivers/misc/misc_minor_kunit.c is to test APIs defined in drivers/char/misc.c, but is not in the same directory as the later. Move misc_minor_kunit.c to drivers/char/. Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com> Link: https://lore.kernel.org/r/20250714-rfc_miscdev-v6-1-2ed949665bde@oss.qualcomm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2025-08-19 12:41:17 +02:00