From a37f049e6da2e8744a801774ccbba2215725c8be Mon Sep 17 00:00:00 2001
From: Robert Chou <robert.ch.chou@acer.com>
Date: Wed, 1 Nov 2017 14:36:50 +0800
Subject: [PATCH] net: lwm2m: break the opaque write loop early when fail

As title, check the return value from the write callback and break if
an error is returned

Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
---
 subsys/net/lib/lwm2m/lwm2m_engine.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/subsys/net/lib/lwm2m/lwm2m_engine.c b/subsys/net/lib/lwm2m/lwm2m_engine.c
index 25c80e75bab..946b46f44e7 100644
--- a/subsys/net/lib/lwm2m/lwm2m_engine.c
+++ b/subsys/net/lib/lwm2m/lwm2m_engine.c
@@ -1903,6 +1903,9 @@ static int lwm2m_write_handler_opaque(struct lwm2m_engine_obj_inst *obj_inst,
 						 data_ptr, len,
 						 last_pkt_block && last_block,
 						 total_size);
+			if (ret < 0) {
+				return ret;
+			}
 		}
 	}