From 7454c9f8c5f67de4264e9eb731d905353d2cbf12 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Mon, 9 Jul 2018 19:16:06 +1000
Subject: [PATCH] AP_OSD: load font on startup

this reduces memory fragmemtation and maximises available memory
during update
---
 libraries/AP_OSD/AP_OSD_MAX7456.cpp | 9 ++++-----
 libraries/AP_OSD/AP_OSD_MAX7456.h   | 1 -
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/libraries/AP_OSD/AP_OSD_MAX7456.cpp b/libraries/AP_OSD/AP_OSD_MAX7456.cpp
index f67c62d3b5..73120fc227 100644
--- a/libraries/AP_OSD/AP_OSD_MAX7456.cpp
+++ b/libraries/AP_OSD/AP_OSD_MAX7456.cpp
@@ -148,7 +148,10 @@ bool AP_OSD_MAX7456::init()
     hal.scheduler->delay(1);
     _dev->read_registers(MAX7456ADD_VM0|MAX7456ADD_READ, &status, 1);
     _dev->get_semaphore()->give();
-    return status == 0;
+    if (status != 0) {
+        return false;
+    }
+    return update_font();
 }
 
 bool AP_OSD_MAX7456::update_font()
@@ -342,10 +345,6 @@ void AP_OSD_MAX7456::reinit()
 
 void AP_OSD_MAX7456::flush()
 {
-    if (!font_updated) {
-        update_font();
-        font_updated = true;
-    }
     check_reinit();
     transfer_frame();
 }
diff --git a/libraries/AP_OSD/AP_OSD_MAX7456.h b/libraries/AP_OSD/AP_OSD_MAX7456.h
index b11708fbb3..c399a3d860 100644
--- a/libraries/AP_OSD/AP_OSD_MAX7456.h
+++ b/libraries/AP_OSD/AP_OSD_MAX7456.h
@@ -59,7 +59,6 @@ private:
 
     uint8_t  video_signal_reg;
     bool initialized;
-    bool font_updated;
 
     static const uint8_t video_lines_ntsc = 13;
     static const uint8_t video_lines_pal = 16;