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[Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown
From: |
Dmitry Osipenko |
Subject: |
[Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown |
Date: |
Thu, 2 Jul 2015 20:20:02 +0300 |
Timer, running in periodic mode, can't be stopped or coming one-shot tick
won't be canceled because timer control code just doesn't handle timer
disabling. Fix it by deleting timer if enable bit isn't set.
Signed-off-by: Dmitry Osipenko <address@hidden>
---
v2: Avoid calling timer_del() if the timer was already disabled as per
Peter Maydell suggestion.
hw/timer/arm_mptimer.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/hw/timer/arm_mptimer.c b/hw/timer/arm_mptimer.c
index 8b93b3c..51c18de 100644
--- a/hw/timer/arm_mptimer.c
+++ b/hw/timer/arm_mptimer.c
@@ -122,11 +122,17 @@ static void timerblock_write(void *opaque, hwaddr addr,
case 8: /* Control. */
old = tb->control;
tb->control = value;
- if (((old & 1) == 0) && (value & 1)) {
+ if (((old & 1) == 0) && ((value & 1) == 0)) {
+ break;
+ }
+ if (value & 1) {
if (tb->count == 0 && (tb->control & 2)) {
tb->count = tb->load;
}
timerblock_reload(tb, 1);
+ } else {
+ /* Shutdown timer. */
+ timer_del(tb->timer);
}
break;
case 12: /* Interrupt status. */
--
2.4.4
- [Qemu-devel] [PATCH] arm_mptimer: Fix timer shutdown, Dmitry Osipenko, 2015/07/01
- Re: [Qemu-devel] [PATCH] arm_mptimer: Fix timer shutdown, Peter Maydell, 2015/07/02
- Re: [Qemu-devel] [PATCH] arm_mptimer: Fix timer shutdown, Dmitry Osipenko, 2015/07/02
- [Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown,
Dmitry Osipenko <=
- Re: [Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown, Peter Maydell, 2015/07/02
- Re: [Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown, Dmitry Osipenko, 2015/07/02
- Re: [Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown, Dmitry Osipenko, 2015/07/02
- Re: [Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown, Peter Maydell, 2015/07/02
- Re: [Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown, Dmitry Osipenko, 2015/07/02
- Re: [Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown, Dmitry Osipenko, 2015/07/02
- Re: [Qemu-devel] [PATCH v2] arm_mptimer: Fix timer shutdown, Dmitry Osipenko, 2015/07/03