From aa0cd0ab474e6ba27dced833ef5ea440a3eabeb2 Mon Sep 17 00:00:00 2001
From: Ivan Grokhotkov <ivan@espressif.com>
Date: Tue, 8 Nov 2016 09:02:30 +0800
Subject: [PATCH] spi_flash: add missing volatile qualifier for lock flags

http://esp32.com/viewtopic.php?f=14&t=419&p=1901
---
 components/spi_flash/cache_utils.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/components/spi_flash/cache_utils.c b/components/spi_flash/cache_utils.c
index 6ae47bdb3e..904007b316 100644
--- a/components/spi_flash/cache_utils.c
+++ b/components/spi_flash/cache_utils.c
@@ -38,8 +38,8 @@ static uint32_t s_flash_op_cache_state[2];
 
 #ifndef CONFIG_FREERTOS_UNICORE
 static SemaphoreHandle_t s_flash_op_mutex;
-static bool s_flash_op_can_start = false;
-static bool s_flash_op_complete = false;
+static volatile bool s_flash_op_can_start = false;
+static volatile bool s_flash_op_complete = false;
 
 void spi_flash_init_lock()
 {