Microblaze port: Place critical section around XIntc_Enable() to protect read/modify/write operation performed inside the library.

FreeRTOS/Demo/MicroBlaze_Kintex7_EthernetLite/RTOSDemo/src/serial.c

@@ -210,7 +210,7 @@ portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
 
 static void prvTxHandler( void *pvUnused, unsigned portBASE_TYPE uxUnused )
 {
-BaseType_t xHigherPriorityTaskWoken = NULL;
+BaseType_t xHigherPriorityTaskWoken = ( BaseType_t ) NULL;
 
 	( void ) pvUnused;
 	( void ) uxUnused;

FreeRTOS/Source/portable/GCC/MicroBlazeV9/port.c

@@ -304,9 +304,15 @@ int32_t lReturn;
 	to this file. */
 	lReturn = prvEnsureInterruptControllerIsInitialised();
 	if( lReturn == pdPASS )
+	{
+		/* Critical section protects read/modify/writer operation inside
+		XIntc_Enable(). */
+		portENTER_CRITICAL();
 		{
 			XIntc_Enable( &xInterruptControllerInstance, ucInterruptID );
 		}
+		portEXIT_CRITICAL();
+	}
 
 	configASSERT( lReturn );
 }