diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 08e9262dc8cd..0c183a34edea 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2537,6 +2537,9 @@ static struct dma_chan *d40_xlate(struct of_phandle_args *dma_spec,
 	dma_cap_mask_t cap;
 	u32 flags;
 
+	if (dma_spec->args_count != 3)
+		return NULL;
+
 	memset(&cfg, 0, sizeof(struct stedma40_chan_cfg));
 
 	dma_cap_zero(cap);