From 9718f9faebacf4cd01307b87e5dfb89ed012e8aa Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Wed, 5 Mar 2014 01:48:39 +0100
Subject: [PATCH] abort on missing acks

---
 flash-ota.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/flash-ota.c b/flash-ota.c
index 2b6e75e..71cb57e 100644
--- a/flash-ota.c
+++ b/flash-ota.c
@@ -227,7 +227,7 @@ int send_hm_message(struct ota_dev *dev, struct recv_data *rdata, uint8_t *msg)
 				}
 
 				if (msg[CTL] & 0x20) {
-					int cnt = 10;
+					int cnt = 3;
 					int pfd;
 					do {
 						errno = 0;
@@ -242,6 +242,11 @@ int send_hm_message(struct ota_dev *dev, struct recv_data *rdata, uint8_t *msg)
 							break;
 						}
 					} while(cnt--);
+
+					if (cnt == -1) {
+						fprintf(stderr, "\nMissing ACK!\n");
+						return 0;
+					}
 				}
 			}
 			break;
-- 
2.39.2