diff --git a/sound/soc/pxa/mmp-pcm.c b/sound/soc/pxa/mmp-pcm.c
index 53fc49e32fbc..0791737c3bf3 100644
--- a/sound/soc/pxa/mmp-pcm.c
+++ b/sound/soc/pxa/mmp-pcm.c
@@ -98,7 +98,7 @@ static bool filter(struct dma_chan *chan, void *param)
 
 	devname = kasprintf(GFP_KERNEL, "%s.%d", dma_data->dma_res->name,
 		dma_data->ssp_id);
-	if ((strcmp(dev_name(chan->device->dev), devname) == 0) &&
+	if (devname && (strcmp(dev_name(chan->device->dev), devname) == 0) &&
 		(chan->chan_id == dma_data->dma_res->start)) {
 		found = true;
 	}