fix(disp): fix missing null pointer judgment (#3238)

Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>
2022-03-30 18:59:26 +08:00
parent 80a6d2bf57
commit e4fb579558
1 changed files with 6 additions and 1 deletions
--- a/src/core/lv_disp.c
+++ b/src/core/lv_disp.c
@@ -136,7 +136,12 @@ lv_obj_t * lv_disp_get_layer_sys(lv_disp_t * disp)
 */
 void lv_disp_set_theme(lv_disp_t * disp, lv_theme_t * th)
 {
-    if(disp == NULL) disp = lv_disp_get_default();
+    if(!disp) disp = lv_disp_get_default();
+    if(!disp) {
+        LV_LOG_WARN("no display registered");
+        return;
+    }
+
    disp->theme = th;

    if(disp->screen_cnt == 3 &&