From 128bb77c5acd661c7ac14d72f2c5ef38d1e66ddc Mon Sep 17 00:00:00 2001
From: Jeroen Domburg <git@j0h.nl>
Date: Mon, 5 Sep 2016 11:58:40 +0800
Subject: [PATCH] Fix prev code to not crash horribly when scheduler is not
 running yet

---
 components/freertos/tasks.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/components/freertos/tasks.c b/components/freertos/tasks.c
index a7850ba2a..92970b582 100644
--- a/components/freertos/tasks.c
+++ b/components/freertos/tasks.c
@@ -3761,7 +3761,10 @@ scheduler will re-enable the interrupts instead. */
 	void vTaskEnterCritical( portMUX_TYPE *mux )
 #endif
 	{
-		portENTER_CRITICAL_NESTED(uxOldInterruptState);
+		if( xSchedulerRunning != pdFALSE )
+		{
+			portENTER_CRITICAL_NESTED(pxCurrentTCB[ xPortGetCoreID() ]->uxOldInterruptState);
+		}
 #ifdef CONFIG_FREERTOS_PORTMUX_DEBUG
 		vPortCPUAcquireMutex( mux, function, line );
 #else
@@ -3814,7 +3817,7 @@ scheduler will re-enable the interrupts instead. */
 
 				if( pxCurrentTCB[ xPortGetCoreID() ]->uxCriticalNesting == 0U )
 				{
-					portEXIT_CRITICAL_NESTED(uxOldInterruptState);
+					portEXIT_CRITICAL_NESTED(pxCurrentTCB[ xPortGetCoreID() ]->uxOldInterruptState);
 				}
 				else
 				{