From 026145b78bdaf4c231a15c4d7145de45acda7574 Mon Sep 17 00:00:00 2001
From: Alex Voinea <voinea.dragos.alexandru@gmail.com>
Date: Wed, 3 Mar 2021 12:31:14 +0200
Subject: [PATCH] Fix CFM message end pointer

---
 Firmware/optiboot_w25x20cl.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Firmware/optiboot_w25x20cl.cpp b/Firmware/optiboot_w25x20cl.cpp
index 212b9988a..05ae8931f 100644
--- a/Firmware/optiboot_w25x20cl.cpp
+++ b/Firmware/optiboot_w25x20cl.cpp
@@ -165,6 +165,7 @@ uint8_t optiboot_w25x20cl_enter()
     cbi(UCSR0B, RXCIE0); //disable the MarlinSerial0 interrupt
     // Send the cfm magic string.
     ptr = entry_magic_cfm;
+    end = strlen_P(entry_magic_cfm) + ptr;
     while (ptr != end)
       putch(pgm_read_byte(ptr ++));
   }