From 8fe916e13384fd9f7a76fde167cea38470e3bf2e Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Fri, 4 Nov 2016 11:23:33 -0600
Subject: [PATCH] Attach the software interrupt handler when interrupts are
 intialized.

---
 arch/misoc/src/lm32/lm32_irq.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/misoc/src/lm32/lm32_irq.c b/arch/misoc/src/lm32/lm32_irq.c
index 4218d8872b2..dab24189e66 100644
--- a/arch/misoc/src/lm32/lm32_irq.c
+++ b/arch/misoc/src/lm32/lm32_irq.c
@@ -69,6 +69,10 @@ void lm32_irq_initialize(void)
 
   g_current_regs = NULL;
 
+  /* Attach the software interrupt */
+
+  (void)irq_attach(MISOC_IRQ_SWINT, lm32_swint);
+
   /* Enable interrupts */
 
   irq_setie(1);