From e72589c6d4c3850a4ce8c79fc77359ce4793a82e Mon Sep 17 00:00:00 2001
From: Amir Gonnen <amirgonnen@gmail.com>
Date: Fri, 8 Feb 2019 00:03:16 +0200
Subject: [PATCH] Prevent crash when lv_init is called more than once. After
 the first call, it will do nothing.

---
 lv_core/lv_obj.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lv_core/lv_obj.c b/lv_core/lv_obj.c
index a58ead8c2..e527af285 100644
--- a/lv_core/lv_obj.c
+++ b/lv_core/lv_obj.c
@@ -49,6 +49,8 @@ static lv_res_t lv_obj_signal(lv_obj_t * obj, lv_signal_t sign, void * param);
  *  STATIC VARIABLES
  **********************/
 
+static bool _lv_initialized = false;
+
 /**********************
  *      MACROS
  **********************/
@@ -62,6 +64,9 @@ static lv_res_t lv_obj_signal(lv_obj_t * obj, lv_signal_t sign, void * param);
  */
 void lv_init(void)
 {
+    if (_lv_initialized) return;
+    _lv_initialized = true;
+
     LV_GC_ROOT(_lv_def_scr) = NULL;
     LV_GC_ROOT(_lv_act_scr) = NULL;
     LV_GC_ROOT(_lv_top_layer) = NULL;