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ASoC: rt5677: Add missing null check for failed allocation of rt5677_dsp

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The allocation of rt5677_dsp can potentially fail and return null, so add
a null check and return -ENOMEM on a memory allocation failure.

Addresses-Coverity: ("Dereference null return")
Fixes: a0e0d13542 ("ASoC: rt5677: Add a PCM device for streaming hotword via SPI")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20191024124610.18182-1-colin.king@canonical.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Colin Ian King 2019-10-24 13:46:10 +01:00 committed by Mark Brown
parent e42599d6bb
commit f8a6043570
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1 changed files with 2 additions and 0 deletions
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2
sound/soc/codecs/rt5677-spi.c
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@ -376,6 +376,8 @@ static int rt5677_spi_pcm_probe(struct snd_soc_component *component)
rt5677_dsp = devm_kzalloc(component->dev, sizeof(*rt5677_dsp),
GFP_KERNEL);
if (!rt5677_dsp)
return -ENOMEM;
rt5677_dsp->dev = &g_spi->dev;
mutex_init(&rt5677_dsp->dma_lock);
INIT_DELAYED_WORK(&rt5677_dsp->copy_work, rt5677_spi_copy_work);