issue with Quectel EC20

[Piotr Figiel]

Hi,
 I dug into the issue a little bit deeper and I think I found the
source of the problem.
 The connection state machine seem to enter a dead end in
mm-bearer-qmi.c on CONNECT_STEP_ENABLE_INDICATIONS_IPV4 case for
libqmi < 1.18.0.
 With this patch it works, you can include it if you find it OK, this
is on top of mm-1-6.

Best regards, Piotr.

>From d5ffba8afb2c18e51eb0a982b31a0c92b7337e64 Mon Sep 17 00:00:00 2001
From: Piotr Figiel <p.figiel at camlintechnologies.com>
Date: Thu, 21 Dec 2017 14:08:35 +0100
Subject: [PATCH] bearer-qmi: fix connect with libqmi lower than 1.18

---
 src/mm-bearer-qmi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/mm-bearer-qmi.c b/src/mm-bearer-qmi.c
index c75d5e4..c92e971 100644
--- a/src/mm-bearer-qmi.c
+++ b/src/mm-bearer-qmi.c
@@ -1156,8 +1156,10 @@ connect_context_step (ConnectContext *ctx)
                                                ctx->cancellable,
                                                (GAsyncReadyCallback)
connect_enable_indications_ipv4_ready,
                                                ctx);
-#endif
         return;
+#else
+        ctx->step++;
+#endif

     case CONNECT_STEP_START_NETWORK_IPV4: {
         QmiMessageWdsStartNetworkInput *input;
-- 
2.7.4