From 32cba22156197c7371cca4f54952c6f7dfe6ed9c Mon Sep 17 00:00:00 2001
From: espes <espes@pequalsnp.com>
Date: Mon, 19 Oct 2015 18:21:43 +1100
Subject: [PATCH] i8259: in edge triggered mode apparently a training edge
 should cancel the interrupt

https://lists.gnu.org/archive/html/qemu-devel/2012-09/msg00411.html
---
 hw/intc/i8259.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/intc/i8259.c b/hw/intc/i8259.c
index c6f248b145..f1f0972980 100644
--- a/hw/intc/i8259.c
+++ b/hw/intc/i8259.c
@@ -171,6 +171,7 @@ static void pic_set_irq(void *opaque, int irq, int level)
             }
             s->last_irr |= mask;
         } else {
+            s->irr &= ~mask;
             s->last_irr &= ~mask;
         }
     }