From 064bb0d204e331a3f560efe58837b7d1212d2b00 Mon Sep 17 00:00:00 2001
From: Ajay Agarwal <ajaya@codeaurora.org>
Date: Tue, 11 Dec 2018 20:17:11 +0530
Subject: [PATCH] net: qrtr: Handle IPCR control port format of older targets

The destination port value in the IPCR control buffer on older
targets is 0xFFFF. Handle the same by updating the dst_port to
QRTR_PORT_CTRL.

Change-Id: Ia70ce1c078ea84f0de47240f6fc3e764f4ae7a6f
Signed-off-by: Ajay Agarwal <ajaya@codeaurora.org>
---
 net/qrtr/qrtr.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c
index 09aaaf5874da..eb4bb24ab2a1 100644
--- a/net/qrtr/qrtr.c
+++ b/net/qrtr/qrtr.c
@@ -36,6 +36,8 @@
 #define QRTR_MIN_EPH_SOCKET 0x4000
 #define QRTR_MAX_EPH_SOCKET 0x7fff
 
+#define QRTR_PORT_CTRL_LEGACY 0xffff
+
 /* qrtr socket states */
 #define QRTR_STATE_MULTI	-2
 #define QRTR_STATE_INIT	-1
@@ -668,6 +670,9 @@ int qrtr_endpoint_post(struct qrtr_endpoint *ep, const void *data, size_t len)
 		goto err;
 	}
 
+	if (cb->dst_port == QRTR_PORT_CTRL_LEGACY)
+		cb->dst_port = QRTR_PORT_CTRL;
+
 	if (len != ALIGN(size, 4) + hdrlen)
 		goto err;