Hi Karthikeyan, FYI, the error/warning still remains. tree: https://android.googlesource.com/kernel/common android-4.19-stable head: 7f0c07bea50da99ebb98f126b9537225268f176e commit: 8c62976a01249b4da610adc1d4d2ead9185a6131 [15309/19507] ANDROID: GKI: ALSA: pcm: add locks for accessing runtime resource config: x86_64-randconfig-a012-20201118 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project b2613fb2f0f53691dd0211895afbb9413457fca7) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git remote add android-common https://android.googlesource.com/kernel/common git fetch --no-tags android-common android-4.19-stable git checkout 8c62976a01249b4da610adc1d4d2ead9185a6131 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): static int skl_dsp_prepare(struct device *dev, unsigned int format, ^ 1 warning generated. vim +/skl_dsp_prepare +108 sound/soc/intel/skylake/skl-messages.c 92eb4f62cbac02 Jeeja KP 2016-03-11 107 92eb4f62cbac02 Jeeja KP 2016-03-11 @108 static int skl_dsp_prepare(struct device *dev, unsigned int format, 92eb4f62cbac02 Jeeja KP 2016-03-11 109 unsigned int size, struct snd_dma_buffer *dmab) 92eb4f62cbac02 Jeeja KP 2016-03-11 110 { 76f56fae1cf904 Rakesh Ughreja 2018-06-01 111 struct hdac_bus *bus = dev_get_drvdata(dev); 92eb4f62cbac02 Jeeja KP 2016-03-11 112 struct hdac_ext_stream *estream; 92eb4f62cbac02 Jeeja KP 2016-03-11 113 struct hdac_stream *stream; 92eb4f62cbac02 Jeeja KP 2016-03-11 114 struct snd_pcm_substream substream; 92eb4f62cbac02 Jeeja KP 2016-03-11 115 int ret; 92eb4f62cbac02 Jeeja KP 2016-03-11 116 92eb4f62cbac02 Jeeja KP 2016-03-11 117 if (!bus) 92eb4f62cbac02 Jeeja KP 2016-03-11 118 return -ENODEV; 92eb4f62cbac02 Jeeja KP 2016-03-11 119 92eb4f62cbac02 Jeeja KP 2016-03-11 120 memset(&substream, 0, sizeof(substream)); 92eb4f62cbac02 Jeeja KP 2016-03-11 121 substream.stream = SNDRV_PCM_STREAM_PLAYBACK; 92eb4f62cbac02 Jeeja KP 2016-03-11 122 76f56fae1cf904 Rakesh Ughreja 2018-06-01 123 estream = snd_hdac_ext_stream_assign(bus, &substream, 92eb4f62cbac02 Jeeja KP 2016-03-11 124 HDAC_EXT_STREAM_TYPE_HOST); 92eb4f62cbac02 Jeeja KP 2016-03-11 125 if (!estream) 92eb4f62cbac02 Jeeja KP 2016-03-11 126 return -ENODEV; 92eb4f62cbac02 Jeeja KP 2016-03-11 127 92eb4f62cbac02 Jeeja KP 2016-03-11 128 stream = hdac_stream(estream); 92eb4f62cbac02 Jeeja KP 2016-03-11 129 92eb4f62cbac02 Jeeja KP 2016-03-11 130 /* assign decouple host dma channel */ 92eb4f62cbac02 Jeeja KP 2016-03-11 131 ret = snd_hdac_dsp_prepare(stream, format, size, dmab); 92eb4f62cbac02 Jeeja KP 2016-03-11 132 if (ret < 0) 92eb4f62cbac02 Jeeja KP 2016-03-11 133 return ret; 92eb4f62cbac02 Jeeja KP 2016-03-11 134 92eb4f62cbac02 Jeeja KP 2016-03-11 135 skl_dsp_setup_spib(dev, size, stream->stream_tag, true); 92eb4f62cbac02 Jeeja KP 2016-03-11 136 92eb4f62cbac02 Jeeja KP 2016-03-11 137 return stream->stream_tag; 92eb4f62cbac02 Jeeja KP 2016-03-11 138 } 92eb4f62cbac02 Jeeja KP 2016-03-11 139 :::::: The code at line 108 was first introduced by commit :::::: 92eb4f62cbac0211e43ee4a6715ee2ea43167e88 ASoC: Intel: Bxtn: Add Broxton DSP support :::::: TO: Jeeja KP <jeeja.kp(a)intel.com&gt; :::::: CC: Mark Brown <broonie(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org