commit aa24822bdc7c4e74afbc6fa1324b01cf067da7cb
author Jan Kiszka <jan.kiszka@siemens.com> Tue Jan 24 16:29:29 2012 +0100
committer Anthony Liguori <aliguori@us.ibm.com> Fri Feb 17 09:58:22 2012 -0600
tree 169e7b7e85693bef2ed3a9cc677830ff148b8e46
parent 4aa5d2853a69d95f5e05bd02200dfc6f47cab9de

i8259: Do not clear level-triggered lines in IRR on init

When an input line is handled as level-triggered, it will immediately
raise an IRQ on the output of a PIC again that goes through an init
reset. So only clear the edge-triggered inputs from IRR in that
scenario.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

hw/i8259_common.c

diff --git a/hw/i8259_common.c b/hw/i8259_common.c
index 775fda4..ab3d98b 100644
--- a/hw/i8259_common.c
+++ b/hw/i8259_common.c
@@ -28,7 +28,7 @@
 void pic_reset_common(PICCommonState *s)
 {
     s->last_irr = 0;
-    s->irr = 0;
+    s->irr &= s->elcr;
     s->imr = 0;
     s->isr = 0;
     s->priority_add = 0;