Hi "Stephan, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on cryptodev/master crypto/master v5.9-rc1 next-20200820] [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-... base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git d162219c655c8cf8003128a13840d6c1e183fb80 config: nios2-allyesconfig (attached as .config) compiler: nios2-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=nios2 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 255 | .rb_reader = 0, | ^ drivers/char/lrng/lrng_testing.c:255:15: note: (near initialization for 'lrng_raw_hires.rb_reader') drivers/char/lrng/lrng_testing.c:295:15: warning: initialized field overwritten [-Woverride-init] 295 | .rb_reader = 0, | ^ drivers/char/lrng/lrng_testing.c:295:15: note: (near initialization for 'lrng_raw_jiffies.rb_reader') drivers/char/lrng/lrng_testing.c:336:15: warning: initialized field overwritten [-Woverride-init] 336 | .rb_reader = 0, | ^ drivers/char/lrng/lrng_testing.c:336:15: note: (near initialization for 'lrng_raw_irq.rb_reader') drivers/char/lrng/lrng_testing.c:376:15: warning: initialized field overwritten [-Woverride-init] 376 | .rb_reader = 0, | ^ drivers/char/lrng/lrng_testing.c:376:15: note: (near initialization for 'lrng_raw_irqflags.rb_reader') drivers/char/lrng/lrng_testing.c:417:15: warning: initialized field overwritten [-Woverride-init] 417 | .rb_reader = 0, | ^ drivers/char/lrng/lrng_testing.c:417:15: note: (near initialization for 'lrng_raw_retip.rb_reader') drivers/char/lrng/lrng_testing.c:457:15: warning: initialized field overwritten [-Woverride-init] 457 | .rb_reader = 0, | ^ drivers/char/lrng/lrng_testing.c:457:15: note: (near initialization for 'lrng_raw_array.rb_reader') drivers/char/lrng/lrng_testing.c:497:15: warning: initialized field overwritten [-Woverride-init] 497 | .rb_reader = 0, | ^ drivers/char/lrng/lrng_testing.c:497:15: note: (near initialization for 'lrng_irq_perf.rb_reader') # https://github.com/0day-ci/linux/commit/89b15c614286cea77d633ade2a9045060... 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-with-full-SP800-90B-compliance/20200820-165712 git checkout 89b15c614286cea77d633ade2a9045060a492149 vim +255 drivers/char/lrng/lrng_testing.c 252 253 static struct lrng_testing lrng_raw_hires = { 254 .rb_reader = 0, 256 .lock = __SPIN_LOCK_UNLOCKED(lrng_raw_hires.lock), 257 .read_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lrng_raw_hires.read_wait) 258 }; 259 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org