tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing head: c26f6731b8da887f1fb92d4654da57a19a266466 commit: 2974d256f0b76fda676b8c7f7ddee2752bbcac7b [49/52] ALSA: usb-audio: qcom: Introduce QC USB SND offloading support config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20250215/202502150035.0SvyRRJn-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250215/202502150035.0SvyRRJn-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202502150035.0SvyRRJn-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): sound/usb/qcom/qc_audio_offload.c: In function 'uaudio_get_iova': >> sound/usb/qcom/qc_audio_offload.c:399:14: warning: variable 'found' set but not used [-Wunused-but-set-variable] 399 | bool found = false; | ^~~~~ sound/usb/qcom/qc_audio_offload.c: In function 'prepare_qmi_response': >> sound/usb/qcom/qc_audio_offload.c:1353:13: warning: variable 'xfer_buf_len' set but not used [-Wunused-but-set-variable] 1353 | u32 xfer_buf_len; | ^~~~~~~~~~~~ vim +/found +399 sound/usb/qcom/qc_audio_offload.c 389 390 /* Offloading IOMMU management */ 391 static unsigned long uaudio_get_iova(unsigned long *curr_iova, 392 size_t *curr_iova_size, 393 struct list_head *head, size_t size) 394 { 395 struct iova_info *info, *new_info = NULL; 396 struct list_head *curr_head; 397 size_t tmp_size = size; 398 unsigned long va = 0; > 399 bool found = false; 400 401 if (size % PAGE_SIZE) 402 goto done; 403 404 if (size > *curr_iova_size) 405 goto done; 406 407 if (*curr_iova_size == 0) 408 goto done; 409 410 list_for_each_entry(info, head, list) { 411 /* exact size iova_info */ 412 if (!info->in_use && info->size == size) { 413 info->in_use = true; 414 va = info->start_iova; 415 *curr_iova_size -= size; 416 found = true; 417 goto done; 418 } else if (!info->in_use && tmp_size >= info->size) { 419 if (!new_info) 420 new_info = info; 421 tmp_size -= info->size; 422 if (tmp_size) 423 continue; 424 425 va = new_info->start_iova; 426 for (curr_head = &new_info->list; curr_head != 427 &info->list; curr_head = curr_head->next) { 428 new_info = list_entry(curr_head, struct 429 iova_info, list); 430 new_info->in_use = true; 431 } 432 info->in_use = true; 433 *curr_iova_size -= size; 434 found = true; 435 goto done; 436 } else { 437 /* iova region in use */ 438 new_info = NULL; 439 tmp_size = size; 440 } 441 } 442 443 info = kzalloc(sizeof(*info), GFP_KERNEL); 444 if (!info) { 445 va = 0; 446 goto done; 447 } 448 449 va = *curr_iova; 450 info->start_iova = *curr_iova; 451 info->size = size; 452 info->in_use = true; 453 *curr_iova += size; 454 *curr_iova_size -= size; 455 found = true; 456 list_add_tail(&info->list, head); 457 458 done: 459 return va; 460 } 461 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
