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ASoC: rt5514-spi: Fix potential NULL pointer dereference

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commit 060d0bf491874daece47053c4e1fb0489eb867d2 upstream.

There is a potential NULL pointer dereference in case devm_kzalloc()
fails and returns NULL.

Fix this by adding a NULL check on rt5514_dsp.

This issue was detected with the help of Coccinelle.

Fixes: 6eebf35b0e4a ("ASoC: rt5514: add rt5514 SPI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gustavo A. R. Silva 2019-01-15 11:57:23 -06:00 committed by Greg Kroah-Hartman
parent 3d963c98d7
commit 9b65b52eb6
1 changed files with 2 additions and 0 deletions
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2
sound/soc/codecs/rt5514-spi.c
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@ -253,6 +253,8 @@ static int rt5514_spi_pcm_probe(struct snd_soc_platform *platform)
rt5514_dsp = devm_kzalloc(platform->dev, sizeof(*rt5514_dsp),
GFP_KERNEL);
if (!rt5514_dsp)
return -ENOMEM;
rt5514_dsp->dev = &rt5514_spi->dev;
mutex_init(&rt5514_dsp->dma_lock);