Hi Yizhen,

FYI, the error/warning still remains.

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 8f53b22e47e98837db7830541a369ed0cd5df749 commit: 95c713224477ac3433652331dd715e9bbcbc793a [19377/30000] ub: init ubcore module config: arm64-randconfig-004-20240912 (https://download.01.org/0day-ci/archive/20240912/202409122243.XfSUhJlV-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240912/202409122243.XfSUhJlV-lkp@i...)

If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot lkp@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202409122243.XfSUhJlV-lkp@intel.com/

All warnings (new ones prefixed by >>):

...

drivers/ub/urma/ubcore/ubcore_main.c:61:5: warning: no previous prototype for 'ubcore_open' [-Wmissing-prototypes]

61 | int ubcore_open(struct inode *i_node, struct file *filp) | ^~~~~~~~~~~

Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for PGP_KEY_PARSER Depends on [n]: CRYPTO [=y] && ASYMMETRIC_KEY_TYPE [=y] && ASYMMETRIC_PUBLIC_KEY_SUBTYPE [=n] Selected by [y]: - PGP_PRELOAD [=y] && CRYPTO [=y] && ASYMMETRIC_KEY_TYPE [=y]

vim +/ubcore_open +61 drivers/ub/urma/ubcore/ubcore_main.c

60

61 int ubcore_open(struct inode *i_node, struct file *filp)

62 { 63 return 0; 64 } 65