Hi Jens, I love your patch! Perhaps something to improve: [auto build test WARNING on axboe-block/for-next] [cannot apply to v5.15 next-20211109] [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/Jens-Axboe/Last-round-of-alloc-s... base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: riscv-randconfig-s032-20211019 (attached as .config) compiler: riscv64-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/9f52e0a0d7ca51980ab3f426f70e652d3... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jens-Axboe/Last-round-of-alloc-side-optimizations/20211019-233352 git checkout 9f52e0a0d7ca51980ab3f426f70e652d3bd2a000 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) block/blk-mq-tag.c: note: in included file (through block/blk.h): -- block/blk-mq.c:320:32: sparse: sparse: invalid assignment: |= block/blk-mq.c:320:32: sparse: left side has type unsigned int block/blk-mq.c:320:32: sparse: right side has type restricted req_flags_t block/blk-mq.c:322:32: sparse: sparse: invalid assignment: |= block/blk-mq.c:322:32: sparse: left side has type unsigned int block/blk-mq.c:322:32: sparse: right side has type restricted req_flags_t block/blk-mq.c:323:22: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted req_flags_t [usertype] rq_flags @@ got unsigned int rq_flags @@ block/blk-mq.c:323:22: sparse: expected restricted req_flags_t [usertype] rq_flags block/blk-mq.c:323:22: sparse: got unsigned int rq_flags block/blk-mq.c:474:47: sparse: expected unsigned int rq_flags block/blk-mq.c:474:47: sparse: got restricted req_flags_t block/blk-mq.c:504:47: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned int rq_flags @@ got restricted req_flags_t @@ block/blk-mq.c:504:47: sparse: expected unsigned int rq_flags block/blk-mq.c:504:47: sparse: got restricted req_flags_t block/blk-mq.c:2433:55: sparse: sparse: incorrect type in initializer (different base types) @@ expected unsigned int rq_flags @@ got restricted req_flags_t @@ block/blk-mq.c:2433:55: sparse: expected unsigned int rq_flags block/blk-mq.c:2433:55: sparse: got restricted req_flags_t block/blk-mq.c: note: in included file (through block/blk.h): vim +169 block/blk-mq.h 166 167 static inline struct blk_mq_tags *blk_mq_tags_from_data(struct blk_mq_alloc_data *data) 168 { 170 return data->hctx->tags; 171 return data->hctx->sched_tags; 172 } 173 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org