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authorRichard Zhao <richard.zhao@freescale.com>2012-09-18 17:20:05 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-09-18 22:52:42 -0400
commitd37777a13b4c4b32e274013846d739e5bbbf6f8d (patch)
treedaa49428c3c524fad44eefaa8bfa1ca4dbead2f5 /sound/soc
parent86767b7d5b3cdbd105e7d7066d671b52aa208188 (diff)
ASoC: imx-pcm-dma: check kzalloc return value in function snd_imx_open
It fixed smatch warning: sound/soc/fsl/imx-pcm-dma.c:112 snd_imx_open() error: potential null dereference 'dma_data'. (kzalloc returns null) Signed-off-by: Richard Zhao <richard.zhao@freescale.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/fsl/imx-pcm-dma.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/soc/fsl/imx-pcm-dma.c b/sound/soc/fsl/imx-pcm-dma.c
index 48f9d886f020..a23505a9ae64 100644
--- a/sound/soc/fsl/imx-pcm-dma.c
+++ b/sound/soc/fsl/imx-pcm-dma.c
@@ -109,6 +109,9 @@ static int snd_imx_open(struct snd_pcm_substream *substream)
dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
dma_data = kzalloc(sizeof(*dma_data), GFP_KERNEL);
+ if (!dma_data)
+ return -ENOMEM;
+
dma_data->peripheral_type = dma_params->shared_peripheral ?
IMX_DMATYPE_SSI_SP : IMX_DMATYPE_SSI;
dma_data->priority = DMA_PRIO_HIGH;