[kbuild-all] [freescale-fslc:5.4-2.3.x-imx 13045/16543] sound/soc/fsl/fsl_esai_client.c:81:5: warning: no previous prototype for 'fsl_esai_client_pcm_trigger'

tree: https://github.com/Freescale/linux-fslc 5.4-2.3.x-imx head: a8a2b9ee4bec0b29d031324160b7f11af42a563a commit: d5986dc1d41899a11bd636fe337ef7d503183683 [13045/16543] MLK-24612-1: ASoC: fsl_esai: Add esai client driver config: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/Freescale/linux-fslc/commit/d5986dc1d41899a11bd636fe33... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc 5.4-2.3.x-imx git checkout d5986dc1d41899a11bd636fe337ef7d503183683 # save the attached .config to linux build tree make W=1 ARCH=i386 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 >>): 81 | int fsl_esai_client_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for GPIO_MXC Depends on GPIOLIB && HAS_IOMEM && ARCH_MXC Selected by - GPIO_MXC_PAD_WAKEUP && GPIOLIB && HAS_IOMEM && IMX_SCU vim +/fsl_esai_client_pcm_trigger +81 sound/soc/fsl/fsl_esai_client.c 80 82 { 83 struct snd_soc_pcm_runtime *rtd = substream->private_data; 84 struct snd_soc_dai *cpu_dai = rtd->cpu_dai; 85 struct fsl_esai_client *client = snd_soc_dai_get_drvdata(cpu_dai); 86 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; 87 88 switch (cmd) { 89 case SNDRV_PCM_TRIGGER_START: 90 case SNDRV_PCM_TRIGGER_RESUME: 91 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: 92 /* These info are needed by esai mix*/ 93 client->dma[tx].buffer_bytes = snd_pcm_lib_buffer_bytes(substream); 94 client->dma[tx].period_bytes = snd_pcm_lib_period_bytes(substream); 95 client->dma[tx].buffer_offset = 0; 96 client->dma[tx].active = true; 97 break; 98 case SNDRV_PCM_TRIGGER_SUSPEND: 99 case SNDRV_PCM_TRIGGER_PAUSE_PUSH: 100 case SNDRV_PCM_TRIGGER_STOP: 101 client->dma[tx].active = false; 102 break; 103 default: 104 return -EINVAL; 105 } 106 107 return 0; 108 } 109 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org