Hi "Stephan, Thank you for the patch! Yet something to improve: [auto build test ERROR on char-misc/char-misc-testing] [also build test ERROR on herbert-cryptodev-2.6/master herbert-crypto-2.6/master v5.16-rc2 next-20211118] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Stephan-M-ller/dev-random-a-new-approach/20211122-005114 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git f4d77525679e289d4976ca03b620ac4cc5403205 config: mips-allmodconfig (attached as .config) compiler: mips-linux-gcc (GCC) 11.2.0 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://github.com/0day-ci/linux/commit/dccd6203b45303ba2985de5a22238809655b48c4 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Stephan-M-ller/dev-random-a-new-approach/20211122-005114 git checkout dccd6203b45303ba2985de5a22238809655b48c4 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash drivers/char/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> drivers/char/lrng/lrng_chacha20.c:32:8: error: structure variable 'chacha20' with 'latent_entropy' attribute has a non-integer field 'block' 32 | struct chacha20_state chacha20 __latent_entropy; | ^~~~~~~~~~~~~~ vim +32 drivers/char/lrng/lrng_chacha20.c 26 27 /* 28 * Have a static memory blocks for the ChaCha20 DRNG instance to avoid calling 29 * kmalloc too early in the boot cycle. For subsequent allocation requests, 30 * such as per-NUMA-node DRNG instances, kmalloc will be used. 31 */ > 32 struct chacha20_state chacha20 __latent_entropy; 33 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org