From afb2e9dd942a77125d4447a96def5be48fee19af Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Thu, 4 Jul 2019 10:49:51 +1000
Subject: [PATCH] stm32/modmachine: Disable IRQs before entering bootloader.

To make sure that the code that enters the bootloader is not interrupted.
---
 ports/stm32/modmachine.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ports/stm32/modmachine.c b/ports/stm32/modmachine.c
index 7ea14bdcd6..ba0ee28471 100644
--- a/ports/stm32/modmachine.c
+++ b/ports/stm32/modmachine.c
@@ -257,6 +257,8 @@ STATIC NORETURN mp_obj_t machine_bootloader(size_t n_args, const mp_obj_t *args)
     storage_flush();
     #endif
 
+    __disable_irq();
+
     #if MICROPY_HW_USES_BOOTLOADER
     if (n_args == 0 || !mp_obj_is_true(args[0])) {
         // By default, with no args given, we enter the custom bootloader (mboot)