[kbuild-all] block/blk-mq.c:324:26: sparse: sparse: incorrect type in assignment (different base types)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 5833291ab6de9c3e2374336b51c814e515e8f3a5 commit: 128459062bc994355027e190477c432ec5b5638a block: cache rq_flags inside blk_mq_rq_ctx_init() date: 4 weeks ago config: x86_64-rhel-8.3-kselftests (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 128459062bc994355027e190477c432ec5b5638a # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 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.c:324:26: sparse: expected unsigned int rq_flags block/blk-mq.c:324:26: sparse: got restricted req_flags_t [usertype] block/blk-mq.c:335:26: sparse: sparse: invalid assignment: |= block/blk-mq.c:335:26: sparse: left side has type unsigned int block/blk-mq.c:335:26: sparse: right side has type restricted req_flags_t block/blk-mq.c:336:22: sparse: expected restricted req_flags_t [usertype] rq_flags block/blk-mq.c:336:22: sparse: got unsigned int rq_flags vim +324 block/blk-mq.c 311 312 static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data, 313 unsigned int tag, u64 alloc_time_ns) 314 { 315 struct blk_mq_ctx *ctx = data->ctx; 316 struct blk_mq_hw_ctx *hctx = data->hctx; 317 struct request_queue *q = data->q; 318 struct elevator_queue *e = q->elevator; 319 struct blk_mq_tags *tags = blk_mq_tags_from_data(data); 320 struct request *rq = tags->static_rqs[tag]; 321 unsigned int rq_flags = 0; 322 323 if (e) { 325 rq->tag = BLK_MQ_NO_TAG; 326 rq->internal_tag = tag; 327 } else { 328 rq->tag = tag; 329 rq->internal_tag = BLK_MQ_NO_TAG; 330 } 331 332 if (data->flags & BLK_MQ_REQ_PM) 334 if (blk_queue_io_stat(q)) 335 rq_flags |= RQF_IO_STAT; 337 338 if (blk_mq_need_time_stamp(rq)) 339 rq->start_time_ns = ktime_get_ns(); 340 else 341 rq->start_time_ns = 0; 342 /* csd/requeue_work/fifo_time is initialized before use */ 343 rq->q = q; 344 rq->mq_ctx = ctx; 345 rq->mq_hctx = hctx; 346 rq->cmd_flags = data->cmd_flags; 347 rq->rq_disk = NULL; 348 rq->part = NULL; 349 #ifdef CONFIG_BLK_RQ_ALLOC_TIME 350 rq->alloc_time_ns = alloc_time_ns; 351 #endif 352 rq->io_start_time_ns = 0; 353 rq->stats_sectors = 0; 354 rq->nr_phys_segments = 0; 355 #if defined(CONFIG_BLK_DEV_INTEGRITY) 356 rq->nr_integrity_segments = 0; 357 #endif 358 rq->timeout = 0; 359 rq->end_io = NULL; 360 rq->end_io_data = NULL; 361 362 data->ctx->rq_dispatched[op_is_sync(data->cmd_flags)]++; 363 blk_crypto_rq_set_defaults(rq); 364 INIT_LIST_HEAD(&rq->queuelist); 365 /* tag was already set */ 366 WRITE_ONCE(rq->deadline, 0); 367 refcount_set(&rq->ref, 1); 368 369 if (rq->rq_flags & RQF_ELV) { 370 struct elevator_queue *e = data->q->elevator; 371 372 rq->elv.icq = NULL; 373 INIT_HLIST_NODE(&rq->hash); 374 RB_CLEAR_NODE(&rq->rb_node); 375 376 if (!op_is_flush(data->cmd_flags) && 377 e->type->ops.prepare_request) { 378 if (e->type->icq_cache) 379 blk_mq_sched_assign_ioc(rq); 380 381 e->type->ops.prepare_request(rq); 382 rq->rq_flags |= RQF_ELVPRIV; 383 } 384 } 385 386 data->hctx->queued++; 387 return rq; 388 } 389 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org