From: David S. Miller <davem@sunset.davemloft.net>
Date: Fri, 26 Oct 2007 11:20:13 +0000 (-0700)
Subject: [TCP]: Add missing I/O AT code to ipv6 side.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b4caea8aa8b4caeda2af6ef6b7f0d43c516815ee;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[TCP]: Add missing I/O AT code to ipv6 side.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 32dc329762e9..06fa4baddf05 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1732,6 +1732,8 @@ process:
 	if (!sock_owned_by_user(sk)) {
 #ifdef CONFIG_NET_DMA
 		struct tcp_sock *tp = tcp_sk(sk);
+		if (!tp->ucopy.dma_chan && tp->ucopy.pinned_list)
+			tp->ucopy.dma_chan = get_softnet_dma();
 		if (tp->ucopy.dma_chan)
 			ret = tcp_v6_do_rcv(sk, skb);
 		else