tree: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.5 head: 175fc928198236037174e5c5c066fe3c4691903e commit: a0e0d135427cf699fe2dee77da0924e0b47f3170 [160/172] ASoC: rt5677: Add a PCM device for streaming hotword via SPI reproduce: # apt-get install sparse # sparse version: v0.6.1-dirty git checkout a0e0d135427cf699fe2dee77da0924e0b47f3170 make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag Reported-by: kbuild test robot lkp@intel.com

sparse warnings: (new ones prefixed by >>)

...

sound/soc/codecs/rt5677-spi.c:148:33: sparse: sparse: Using plain integer as NULL pointer sound/soc/codecs/rt5677-spi.c:365:13: sparse: sparse: symbol 'rt5677_spi_pcm_page' was not declared. Should it be static?

vim +148 sound/soc/codecs/rt5677-spi.c

139 140 static int rt5677_spi_hw_free( 141 struct snd_soc_component *component, 142 struct snd_pcm_substream *substream) 143 { 144 struct rt5677_dsp *rt5677_dsp = 145 snd_soc_component_get_drvdata(component); 146 147 mutex_lock(&rt5677_dsp->dma_lock);

148 rt5677_dsp->substream = 0;

149 mutex_unlock(&rt5677_dsp->dma_lock); 150 151 return snd_pcm_lib_free_vmalloc_buffer(substream); 152 } 153

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