From: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
sound/soc/samsung/dma.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/sound/soc/samsung/dma.c b/sound/soc/samsung/dma.c
index 6e2b2b4..d54df85 100644
--- a/sound/soc/samsung/dma.c
+++ b/sound/soc/samsung/dma.c
@@ -183,6 +183,10 @@ static int dma_hw_params(struct snd_pcm_substream *substream,
prtd->params->ch = prtd->params->ops->request(
prtd->params->channel, &req, rtd->cpu_dai->dev,
prtd->params->ch_name);
+ if (!prtd->params->ch) {
+ pr_err("Failed to allocate DMA channel\n");
+ return -ENXIO;
+ }
prtd->params->ops->config(prtd->params->ch, &config);
}
--
1.8.4.rc3
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