diff --git a/include/net/tcp.h b/include/net/tcp.h
index 3c989db..d0c2c2f 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -28,6 +28,7 @@
 #include <linux/cache.h>
 #include <linux/percpu.h>
 #include <linux/skbuff.h>
+#include <linux/dmaengine.h>
 
 #include <net/inet_connection_sock.h>
 #include <net/inet_timewait_sock.h>
@@ -817,6 +818,12 @@
 	tp->ucopy.len = 0;
 	tp->ucopy.memory = 0;
 	skb_queue_head_init(&tp->ucopy.prequeue);
+#ifdef CONFIG_NET_DMA
+	tp->ucopy.dma_chan = NULL;
+	tp->ucopy.wakeup = 0;
+	tp->ucopy.pinned_list = NULL;
+	tp->ucopy.dma_cookie = 0;
+#endif
 }
 
 /* Packet is added to VJ-style prequeue for processing in process