Hi Yizhen,

FYI, the error/warning still remains.

tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 8f53b22e47e98837db7830541a369ed0cd5df749 commit: f6206cf05e28a7f455850a4e2de8162890f50073 [19385/30000] ub: add memory map api in ubcore config: arm64-randconfig-004-20240912 (https://download.01.org/0day-ci/archive/20240913/202409130030.E8xxPVNT-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240913/202409130030.E8xxPVNT-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/202409130030.E8xxPVNT-lkp@intel.com/

All warnings (new ones prefixed by >>):

...

drivers/ub/urma/ubcore/ubcore_umem.c:227:21: warning: no previous prototype for 'ubcore_umem_get' [-Wmissing-prototypes]

227 | struct ubcore_umem *ubcore_umem_get(struct ubcore_device *dev, uint64_t va, uint64_t len, | ^~~~~~~~~~~~~~~

...

drivers/ub/urma/ubcore/ubcore_umem.c:245:6: warning: no previous prototype for 'ubcore_umem_release' [-Wmissing-prototypes]

245 | void ubcore_umem_release(struct ubcore_umem *umem) | ^~~~~~~~~~~~~~~~~~~

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_umem_get +227 drivers/ub/urma/ubcore/ubcore_umem.c

226

227 struct ubcore_umem *ubcore_umem_get(struct ubcore_device *dev, uint64_t va, uint64_t len,

228 union ubcore_umem_flag flag) 229 { 230 struct page **page_list; 231 int ret; 232 233 ret = umem_verify_input(dev, va, len, flag); 234 if (ret < 0) 235 return ERR_PTR(ret); 236 237 page_list = (struct page **)__get_free_page(GFP_KERNEL); 238 if (page_list == 0) 239 return ERR_PTR(-ENOMEM); 240 241 return ubcore_get_target_umem(dev, va, len, flag, page_list); 242 } 243 EXPORT_SYMBOL(ubcore_umem_get); 244

245 void ubcore_umem_release(struct ubcore_umem *umem)