Don't add new message to logf when we dump it to file

Fix log file corruption if we have new messages at dumping log to file. Comment
removed as it incorrect. We store all messages in direct order (last message at
end of file).

Change-Id: I4acfa8a0935cc41a889e08f6bc42974fefd1ade2

2 files changed, 5 insertions, 0 deletions

diff --git a/firmware/export/logf.h b/firmware/export/logf.h
index e881e7e496..c8aaad06b4 100644
--- a/firmware/export/logf.h
+++ b/firmware/export/logf.h
@@ -34,6 +34,7 @@
 extern unsigned char logfbuffer[MAX_LOGF_SIZE];
 extern int logfindex;
 extern bool logfwrap;
+extern bool logfenabled;
 #endif /* __PCTOOL__ */
 
 #define logf _logf
diff --git a/firmware/logf.c b/firmware/logf.c
index 0f05c6590d..bdc5ad9cc0 100644
--- a/firmware/logf.c
+++ b/firmware/logf.c
@@ -62,6 +62,7 @@ static int logdiskfindex;
 unsigned char logfbuffer[MAX_LOGF_SIZE];
 int logfindex;
 bool logfwrap;
+bool logfenabled = true;
 #endif
 
 #ifdef HAVE_REMOTE_LCD
@@ -214,6 +215,9 @@ static int logf_push(void *userp, unsigned char c)
 
 void _logf(const char *fmt, ...)
 {
+    if (!logfenabled)
+        return;
+
     #ifdef USB_ENABLE_SERIAL
     int old_logfindex = logfindex;
     #endif