Add additional NOP after EINT instruction in MSP430 ports.

FreeRTOS/Source/portable/CCS/MSP430X/portmacro.h

@@ -110,7 +110,7 @@ typedef unsigned short UBaseType_t;
 
 /* Interrupt control macros. */
 #define portDISABLE_INTERRUPTS()	_disable_interrupt(); _nop()
-#define portENABLE_INTERRUPTS()		_enable_interrupt()
+#define portENABLE_INTERRUPTS()		_enable_interrupt(); _nop()
 /*-----------------------------------------------------------*/
 
 /* Critical section control macros. */

FreeRTOS/Source/portable/GCC/MSP430F449/portmacro.h

@@ -104,7 +104,7 @@ typedef unsigned short UBaseType_t;
 
 /* Interrupt control macros. */
 #define portDISABLE_INTERRUPTS()	asm volatile ( "DINT" ); asm volatile ( "NOP" )
-#define portENABLE_INTERRUPTS()		asm volatile ( "EINT" )
+#define portENABLE_INTERRUPTS()		asm volatile ( "EINT" ); asm volatile ( "NOP" )
 /*-----------------------------------------------------------*/
 
 /* Critical section control macros. */

FreeRTOS/Source/portable/IAR/MSP430/portmacro.h

@@ -102,7 +102,7 @@ typedef unsigned short UBaseType_t;
 
 /* Interrupt control macros. */
 #define portDISABLE_INTERRUPTS()	_DINT(); _NOP()
-#define portENABLE_INTERRUPTS()		_EINT();
+#define portENABLE_INTERRUPTS()		_EINT(); _NOP()
 /*-----------------------------------------------------------*/
 
 /* Critical section control macros. */

FreeRTOS/Source/portable/IAR/MSP430X/portmacro.h

@@ -110,7 +110,7 @@ typedef unsigned short UBaseType_t;
 
 /* Interrupt control macros. */
 #define portDISABLE_INTERRUPTS()	_DINT();_NOP()
-#define portENABLE_INTERRUPTS()		_EINT()
+#define portENABLE_INTERRUPTS()		_EINT(); _NOP()
 /*-----------------------------------------------------------*/
 
 /* Critical section control macros. */