From 060d0bf491874daece47053c4e1fb0489eb867d2 Mon Sep 17 00:00:00 2001
From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
Date: Tue, 15 Jan 2019 11:57:23 -0600
Subject: [PATCH] ASoC: rt5514-spi: Fix potential NULL pointer dereference
Git-commit: 060d0bf491874daece47053c4e1fb0489eb867d2
Patch-mainline: v5.0-rc4
References: bsc#1051510
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/codecs/rt5514-spi.c | 2 ++
1 file changed, 2 insertions(+)
--- a/sound/soc/codecs/rt5514-spi.c
+++ b/sound/soc/codecs/rt5514-spi.c
@@ -251,6 +251,8 @@ static int rt5514_spi_pcm_probe(struct s
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);