From 60ded486c2ccefd6d97f5d109fdea98ee0a6a826 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Sun, 21 Dec 2014 13:29:50 +1100
Subject: [PATCH] DataFlash: don't write out parameters if log open fails

---
 libraries/DataFlash/LogFile.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libraries/DataFlash/LogFile.cpp b/libraries/DataFlash/LogFile.cpp
index a0abbfc1fa..1e764ca47b 100644
--- a/libraries/DataFlash/LogFile.cpp
+++ b/libraries/DataFlash/LogFile.cpp
@@ -565,7 +565,10 @@ uint16_t DataFlash_Class::StartNewLog(void)
 {
     uint16_t ret;
     ret = start_new_log();
-
+    if (ret == 0xFFFF) {
+        // don't write out parameters if we fail to open the log
+        return ret;
+    }
     // write log formats so the log is self-describing
     for (uint8_t i=0; i<_num_types; i++) {
         Log_Write_Format(&_structures[i]);