tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: c02455c4cce8052f74fc11c09e9073c01c7f33a4 commit: fe08767e3a083e73a72f08432bc6fbd864fa7179 [2411/2411] drivers/crypto/ccp: concurrent psp access support between user and kernel space config: x86_64-buildonly-randconfig-2001-20250626 (https://download.01.org/0day-ci/archive/20250629/202506291256.D2SqWOXZ-lkp@i...) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250629/202506291256.D2SqWOXZ-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/202506291256.D2SqWOXZ-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

drivers/crypto/ccp/hygon/psp-dev.c:25:10: warning: no previous prototype for 'atomic64_exchange' [-Wmissing-prototypes] 25 | uint64_t atomic64_exchange(uint64_t *dst, uint64_t val) | ^~~~~~~~~~~~~~~~~ drivers/crypto/ccp/hygon/psp-dev.c:30:5: warning: no previous prototype for 'psp_mutex_init' [-Wmissing-prototypes] 30 | int psp_mutex_init(struct psp_mutex *mutex) | ^~~~~~~~~~~~~~ drivers/crypto/ccp/hygon/psp-dev.c:38:5: warning: no previous prototype for 'psp_mutex_trylock' [-Wmissing-prototypes] 38 | int psp_mutex_trylock(struct psp_mutex *mutex) | ^~~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for ACPI_HOTPLUG_IGNORE_OSC Depends on [n]: ACPI [=y] && ACPI_HOTPLUG_CPU [=n] Selected by [y]: - X86 [=y] && ACPI [=y] && HOTPLUG_CPU [=y] vim +/atomic64_exchange +25 drivers/crypto/ccp/hygon/psp-dev.c 24

25 uint64_t atomic64_exchange(uint64_t *dst, uint64_t val) 26 { 27 return xchg(dst, val); 28 } 29 30 int psp_mutex_init(struct psp_mutex *mutex) 31 { 32 if (!mutex) 33 return -1; 34 mutex->locked = 0; 35 return 0; 36 } 37

-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki