From e45035db5c297190eee18cefa3b91b36b9f0e32b Mon Sep 17 00:00:00 2001
From: Oleg Korsak <kamikaze.is.waiting.you@gmail.com>
Date: Sat, 7 Jan 2017 22:03:51 +0200
Subject: [PATCH] extmod/modframebuf: optimize fill_rect subroutine call

---
 extmod/modframebuf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extmod/modframebuf.c b/extmod/modframebuf.c
index d6e686e076..93d4922c92 100644
--- a/extmod/modframebuf.c
+++ b/extmod/modframebuf.c
@@ -115,7 +115,7 @@ static inline uint32_t getpixel(const mp_obj_framebuf_t *fb, int x, int y) {
 }
 
 STATIC void fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w, int h, uint32_t col) {
-    if (x + w <= 0 || y + h <= 0 || y >= fb->height || x >= fb->width) {
+    if (h < 1 || w < 1 || x + w <= 0 || y + h <= 0 || y >= fb->height || x >= fb->width) {
         // No operation needed.
         return;
     }