1 files changed, 14 insertions, 0 deletions
diff --git a/nuttx/arch/hc/src/m9s12/m9s12_irq.c b/nuttx/arch/hc/src/m9s12/m9s12_irq.c
index 1fb59d551..076ef0b3c 100755
--- a/nuttx/arch/hc/src/m9s12/m9s12_irq.c
+++ b/nuttx/arch/hc/src/m9s12/m9s12_irq.c
@@ -83,4 +83,18 @@ void up_irqinitialize(void)
   /* currents_regs is non-NULL only while processing an interrupt */
 
   current_regs = NULL;
+
+  /* Initialize logic to support a second level of interrupt decoding for
+   * GPIO pins.
+   */
+ 
+#ifdef CONFIG_GPIO_IRQ
+  lpc17_gpioirqinitialize();
+#endif
+
+  /* And finally, enable interrupts */
+
+#ifndef CONFIG_SUPPRESS_INTERRUPTS
+  irqrestore(0);
+#endif
 }