ASoC: rt5677-spi: fix sparse warnings

Fix bugs reported by kbuild test robot

Fixes: a0e0d135427c ("ASoC: rt5677: Add a PCM device for streaming hotword via SPI")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
Link: https://lore.kernel.org/r/20191024184026.183913-1-cujomalainey@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt5677-spi.c b/sound/soc/codecs/rt5677-spi.c
index 3a17643fcd9f3c158d82ed5c8761b5a2d88598f2..dac1097bc740f2ef37c54e842cac42987fc1ad85 100644 (file)
--- a/sound/soc/codecs/rt5677-spi.c
+++ b/sound/soc/codecs/rt5677-spi.c
@@ -145,7 +145,7 @@ static int rt5677_spi_hw_free(
                        snd_soc_component_get_drvdata(component);
 
        mutex_lock(&rt5677_dsp->dma_lock);
-       rt5677_dsp->substream = 0;
+       rt5677_dsp->substream = NULL;
        mutex_unlock(&rt5677_dsp->dma_lock);
 
        return snd_pcm_lib_free_vmalloc_buffer(substream);
@@ -362,7 +362,7 @@ done:
        mutex_unlock(&rt5677_dsp->dma_lock);
 }
 
-struct page *rt5677_spi_pcm_page(
+static struct page *rt5677_spi_pcm_page(
                struct snd_soc_component *component,
                struct snd_pcm_substream *substream,
                unsigned long offset)