Hi Ban, I love your patch! Yet something to improve: [auto build test ERROR on sunxi/sunxi/for-next] [also build test ERROR on asoc/for-next pza/reset/next linus/master v5.13-rc6 next-20210616] [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/Ban-Tao/ASoC-sunxi-Add-Allwinner... base: https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git sunxi/for-next config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 9.3.0 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 # https://github.com/0day-ci/linux/commit/49b9fed77fea75987ffd3230684bff94e... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Ban-Tao/ASoC-sunxi-Add-Allwinner-H6-Digital-MIC-driver/20210616-140744 git checkout 49b9fed77fea75987ffd3230684bff94e1f22138 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): sound/soc/sunxi/sun50i-dmic.c: In function 'sun50i_dmic_startup': 96 | struct sun50i_dmic_dev *host = snd_soc_dai_get_drvdata(rtd->cpu_dai); | ^~ vim +96 sound/soc/sunxi/sun50i-dmic.c 91 92 static int sun50i_dmic_startup(struct snd_pcm_substream *substream, 93 struct snd_soc_dai *cpu_dai) 94 { 95 struct snd_soc_pcm_runtime *rtd = substream->private_data; 97 98 /* only support capture */ 99 if (substream->stream != SNDRV_PCM_STREAM_CAPTURE) 100 return -EINVAL; 101 102 regmap_write(host->regmap, SUN50I_DMIC_INT_STA, 103 SUN50I_DMIC_INT_STA_OVERRUN_IRQ_PENDING | 104 SUN50I_DMIC_INT_STA_DATA_IRQ_PENDING); 105 regmap_update_bits(host->regmap, SUN50I_DMIC_RXFIFO_CTL, 106 SUN50I_DMIC_RXFIFO_CTL_FLUSH, 107 SUN50I_DMIC_RXFIFO_CTL_FLUSH); 108 regmap_write(host->regmap, SUN50I_DMIC_CNT, SUN50I_DMIC_CNT_N); 109 110 return 0; 111 } 112 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org