Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on herbert-cryptodev-2.6/master linux/master linus/master v5.16-rc3 next-20211202] [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/sgoutham-marvell-com/hwrng-cn10k-Add-random-number-generator-support/20211130-015707 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 5d331b5922551637c586cdf5fdc1778910fc937f config: arm64-randconfig-s031-20211203 (https://download.01.org/0day-ci/archive/20211203/202112031752.wdInk91s-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/395a6a89774841f3f1c9d994b7d8cdfaf25bc428 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review sgoutham-marvell-com/hwrng-cn10k-Add-random-number-generator-support/20211130-015707 git checkout 395a6a89774841f3f1c9d994b7d8cdfaf25bc428 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/char/hw_random/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/char/hw_random/cn10k-rng.c:88:17: sparse: sparse: cast removes address space '__iomem' of expression vim +/__iomem +88 drivers/char/hw_random/cn10k-rng.c 82 83 static int cn10k_read_trng(struct cn10k_rng *rng, u64 *value) 84 { 85 u64 addr, result = 0; 86 int retry_count = 5; 87 > 88 addr = (u64)rng->reg_base + RNM_PF_RANDOM; 89 /* TRNG and status need to be read at a time */ 90 while (!result && retry_count) { 91 __asm__ volatile("ldp %0,%1,[%2]" :\ 92 "=r" (*value), "=r" (result) : "r" (addr) : ); 93 94 retry_count--; 95 } 96 97 return retry_count ? 0 : -EIO; 98 } 99 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
