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 cryptodev/master crypto/master v5.9-rc5 next-20200918]
[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/20200918-181505
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 8fd0e2a6df262539eaa28b0a2364cca10d1dc662
config: powerpc-allyesconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 9.3.0
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
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/char/lrng/lrng_chacha20.c:33:8: error: structure variable 'chacha20' with 'latent_entropy' attribute has a non-integer field 'block'
      33 | struct chacha20_state chacha20 __latent_entropy;
         |        ^~~~~~~~~~~~~~

# https://github.com/0day-ci/linux/commit/ecb964754fd80cca434d6d2ad6db8f28a1592fa1
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/20200918-181505
git checkout ecb964754fd80cca434d6d2ad6db8f28a1592fa1
vim +33 drivers/char/lrng/lrng_chacha20.c

    27	
    28	/*
    29	 * Have a static memory blocks for the ChaCha20 DRNG instance to avoid calling
    30	 * kmalloc too early in the boot cycle. For subsequent allocation requests,
    31	 * such as per-NUMA-node DRNG instances, kmalloc will be used.
    32	 */
  > 33	struct chacha20_state chacha20 __latent_entropy;
    34	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org