Hi Srinivasa, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on broonie-sound/for-next] [also build test WARNING on v5.17-rc4 next-20220215] [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/Srinivasa-Rao-Mandadapu/Add-supp... base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next config: csky-randconfig-s032-20220216 (https://download.01.org/0day-ci/archive/20220216/202202161407.5MOObZwm-lk...) compiler: csky-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/e81c7e5d842d2b8039700a71557683e88... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Srinivasa-Rao-Mandadapu/Add-support-for-audio-on-SC7280-based-targets/20220214-230256 git checkout e81c7e5d842d2b8039700a71557683e88ce0162d # 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=csky SHELL=/bin/bash sound/soc/qcom/ 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/qcom/lpass-platform.c:1218:52: sparse: expected void [noderef] __iomem *dma_buf sound/soc/qcom/lpass-platform.c:1218:52: sparse: got unsigned char * vim +1218 sound/soc/qcom/lpass-platform.c 1209 1210 static int lpass_platform_copy(struct snd_soc_component *component, 1211 struct snd_pcm_substream *substream, int channel, 1212 unsigned long pos, void __user *buf, unsigned long bytes) 1213 { 1214 struct snd_pcm_runtime *rt = substream->runtime; 1215 unsigned int dai_id = component->id; 1216 int ret = 0; 1217 1219 channel * (rt->dma_bytes / rt->channels); 1220 1221 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 1222 if (is_cdc_dma_port(dai_id)) 1223 ret = copy_from_user_toio(dma_buf, buf, bytes); 1224 else 1225 ret = copy_from_user((void __force *)dma_buf, buf, bytes); 1226 } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { 1227 if (is_cdc_dma_port(dai_id)) 1228 ret = copy_to_user_fromio(buf, dma_buf, bytes); 1229 else 1230 ret = copy_to_user(buf, (void __force *)dma_buf, bytes); 1231 } 1232 1233 return ret; 1234 } 1235 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org