tree: https://github.com/intel/linux-intel-lts.git 4.19/android head: ea9961eec18fbdbf0d3513d88cc7da2a718415d5 commit: ea9961eec18fbdbf0d3513d88cc7da2a718415d5 [2/2] ASoC: Intel: Skylake: Update stackdump collection config: x86_64-randconfig-s021-20200909 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-191-g10164920-dirty git checkout ea9961eec18fbdbf0d3513d88cc7da2a718415d5 # 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 >>) sound/soc/intel/skylake/skl-sst-ipc.c:500:17: sparse: sparse: cast removes address space '<asn:2>' of expression -- sound/soc/intel/skylake/skl-sst-utils.c:295:17: sparse: sparse: cast removes address space '<asn:2>' of expression sound/soc/intel/skylake/skl-sst-utils.c:368:39: sparse: expected void volatile [noderef] <asn:2> *addr sound/soc/intel/skylake/skl-sst-utils.c:1074:24: sparse: sparse: Variable length array is used. # https://github.com/intel/linux-intel-lts/commit/ea9961eec18fbdbf0d3513d88... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 4.19/android git checkout ea9961eec18fbdbf0d3513d88cc7da2a718415d5 vim +506 sound/soc/intel/skylake/skl-sst-ipc.c 475 476 void 477 skl_process_log_buffer(struct sst_dsp *sst, int core) 478 { 479 int size; 480 u32 *ptr; 481 u8 *base; 482 u32 write, read; 483 484 if (!(BIT(core) & sst->trace_wind.flags)) { 485 dev_err(sst->dev, "Logging is disabled on dsp %d\n", core); 486 return; 487 } 488 if (skl_dsp_get_buff_users(sst, core) > 2) { 489 dev_err(sst->dev, "Can't handle log buffer notification, \ 490 previous writer is not finished yet !\n \ 491 dropping log buffer\n"); 492 return; 493 } 494 skl_dsp_get_log_buff(sst, core); 495 #if defined(CONFIG_SND_SOC_INTEL_CNL_FPGA) 496 size = sst->trace_wind.size; 497 #else 498 size = sst->trace_wind.size/sst->trace_wind.nr_dsp; 499 #endif 500 base = (u8 *)sst->trace_wind.addr; 501 /* move to the source dsp tracing window */ 502 base += (core * size); 503 ptr = (u32 *) base; 504 read = ptr[0]; 505 write = ptr[1]; 507 goto exit; 508 if (write > read) { 509 skl_dsp_write_log(sst, (void __iomem *)(base + 8 + read), 510 core, (write - read)); 511 /* read pointer */ 512 ptr[0] += write - read; 513 } else { 514 skl_dsp_write_log(sst, (void __iomem *) (base + 8 + read), 515 core, size - 8 - read); 516 skl_dsp_write_log(sst, (void __iomem *) (base + 8), 517 core, write); 518 ptr[0] = write; 519 } 520 exit: 521 skl_dsp_put_log_buff(sst, core); 522 } 523 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org