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>
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86767b7d5b
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d37777a13b
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@ -109,6 +109,9 @@ static int snd_imx_open(struct snd_pcm_substream *substream)
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dma_params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
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dma_data = kzalloc(sizeof(*dma_data), GFP_KERNEL);
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if (!dma_data)
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return -ENOMEM;
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dma_data->peripheral_type = dma_params->shared_peripheral ?
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IMX_DMATYPE_SSI_SP : IMX_DMATYPE_SSI;
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dma_data->priority = DMA_PRIO_HIGH;
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