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ASoC: rt5514-spi: Fix potential NULL pointer dereference

Message ID 20190115175723.GA32176@embeddedor (mailing list archive)
State Accepted
Commit 060d0bf491874daece47053c4e1fb0489eb867d2
Headers show
Series ASoC: rt5514-spi: Fix potential NULL pointer dereference | expand

Commit Message

Gustavo A. R. Silva Jan. 15, 2019, 5:57 p.m. UTC 
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>
---
 sound/soc/codecs/rt5514-spi.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c
index 4d46f4567c3a..bec2eefa8b0f 100644
--- a/sound/soc/codecs/rt5514-spi.c
+++ b/sound/soc/codecs/rt5514-spi.c
@@ -280,6 +280,8 @@  static int rt5514_spi_pcm_probe(struct snd_soc_component *component)
 
 	rt5514_dsp = devm_kzalloc(component->dev, sizeof(*rt5514_dsp),
 			GFP_KERNEL);
+	if (!rt5514_dsp)
+		return -ENOMEM;
 
 	rt5514_dsp->dev = &rt5514_spi->dev;
 	mutex_init(&rt5514_dsp->dma_lock);