[zx2c4:master 9/10] ERROR: modpost: "wake_up_state" [drivers/char/hw_random/rng-core.ko] undefined!

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/zx2c4/linux.git master
head:   9b3548a2475866d26bdeee84d62eecf1bc94d22a
commit: 78223ae64136d911588115c6c317a31305100ce4 [9/10] ath9k: let sleep be interrupted when unregistering hwrng
config: i386-randconfig-a003-20220627 (https://download.01.org/0day-ci/archive/20220629/202206290408.ua4IX9mh-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project df18167ac56d05f2ab55f9d874aee7ab6d5bc9a2)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/zx2c4/linux.git/commit/?id=78223ae64136d911588115c6c317a31305100ce4
        git remote add zx2c4 https://git.kernel.org/pub/scm/linux/kernel/git/zx2c4/linux.git
        git fetch --no-tags zx2c4 master
        git checkout 78223ae64136d911588115c6c317a31305100ce4
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

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

>> ERROR: modpost: "wake_up_state" [drivers/char/hw_random/rng-core.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp