From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Wed, 1 Feb 2012 19:31:37 +0000 (+0100)
Subject: i8254: Do not raise IRQ level on reset
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=61b7b67df2ed10ff5ab0dcc649080bca782fdc5e;p=qemu.git

i8254: Do not raise IRQ level on reset

Avoid changing the IRQ level to high on reset as it may trigger spurious
events. Instead, open-code the effects of pit_load_count(0) in the reset
handler.

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

diff --git a/hw/i8254.c b/hw/i8254.c
index 481fc7b252..d55b22148b 100644
--- a/hw/i8254.c
+++ b/hw/i8254.c
@@ -481,7 +481,13 @@ static void pit_reset(DeviceState *dev)
         s = &pit->channels[i];
         s->mode = 3;
         s->gate = (i != 2);
-        pit_load_count(s, 0);
+        s->count_load_time = qemu_get_clock_ns(vm_clock);
+        s->count = 0x10000;
+        if (i == 0) {
+            s->next_transition_time =
+                pit_get_next_transition_time(s, s->count_load_time);
+            qemu_mod_timer(s->irq_timer, s->next_transition_time);
+        }
     }
 }