From: Samuel Ortiz <sameo@linux.intel.com>
Date: Mon, 15 Oct 2012 13:09:52 +0000 (+0200)
Subject: NFC: Keep connection less bound sockets alive when DEP link goes down
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c8512be63bbf9216934ecd10e1f9e4f887076fc2;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

NFC: Keep connection less bound sockets alive when DEP link goes down

When DEP goes down, bound cl sockets can be kept alive as there is no
reason to kill a connection less server socket because the LLCP link
went down.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---

diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c
index ee01be17e21f..7f92a857b319 100644
--- a/net/nfc/llcp/llcp.c
+++ b/net/nfc/llcp/llcp.c
@@ -85,6 +85,16 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)
 			}
 		}
 
+		/*
+		 * If we have a connection less socket bound, we keep it alive
+		 * if the device is still present.
+		 */
+		if (sk->sk_state == LLCP_BOUND && sk->sk_type == SOCK_DGRAM &&
+		    listen == true) {
+			bh_unlock_sock(sk);
+			continue;
+		}
+
 		sk->sk_state = LLCP_CLOSED;
 
 		bh_unlock_sock(sk);