diff --git a/drivers/dma/pch_dma.c b/drivers/dma/pch_dma.c
index 6abe5ac..a6d0e3d 100644
--- a/drivers/dma/pch_dma.c
+++ b/drivers/dma/pch_dma.c
@@ -872,8 +872,7 @@
 	int i;
 
 	nr_channels = id->driver_data;
-	pd = kzalloc(sizeof(struct pch_dma)+
-		sizeof(struct pch_dma_chan) * nr_channels, GFP_KERNEL);
+	pd = kzalloc(sizeof(*pd), GFP_KERNEL);
 	if (!pd)
 		return -ENOMEM;