ERROR: modpost: "tpm2_sessions_init" [drivers/char/tpm/tpm_ibmvtpm.ko] undefined!

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   f524a5e4dfb75b277c9a5ad819ca5f035f490f14
commit: a223ab72caee9aa1250386c90176fa3f2c2f1d50 [/3069] tpm: ibmvtpm: Call tpm2_sessions_init() to initialize session support
config: powerpc64-randconfig-002-20240804 (https://download.01.org/0day-ci/archive/20240805/[email protected]/config)
compiler: powerpc64le-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240805/[email protected]/reproduce)

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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>, old ones prefixed by <<):

WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/locking/test-ww_mutex.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/serial/ch341.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/serial/usb_debug.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/serial/qcaux.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/serial/usb-serial-simple.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/devfreq/governor_simpleondemand.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-hub.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-master-aspeed.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fsi/fsi-scom.o

>> ERROR: modpost: "tpm2_sessions_init" [drivers/char/tpm/tpm_ibmvtpm.ko] undefined!

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