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[Qemu-devel] [PATCH 1/1] arm: virt: change GPIO trigger interrupt to pul
From: |
Wei Huang |
Subject: |
[Qemu-devel] [PATCH 1/1] arm: virt: change GPIO trigger interrupt to pulse |
Date: |
Thu, 28 Jan 2016 13:22:20 -0500 |
When QEMU is hook'ed up with libvirt/virsh, the first ACPI reboot
request will succeed; but the following shutdown/reboot requests
fail to trigger VMs to react. Notice that in mach-virt machine
model GPIO is defined as edge-triggered and active-high in ACPI.
This patch changes the behavior of powerdown notifier from PULLUP
to PULSE. It solves the problem described above (i.e. reboot
continues to work).
Signed-off-by: Wei Huang <address@hidden>
---
hw/arm/virt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 05f9087..b5468a9 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -546,7 +546,7 @@ static DeviceState *pl061_dev;
static void virt_powerdown_req(Notifier *n, void *opaque)
{
/* use gpio Pin 3 for power button event */
- qemu_set_irq(qdev_get_gpio_in(pl061_dev, 3), 1);
+ qemu_irq_pulse(qdev_get_gpio_in(pl061_dev, 3));
}
static Notifier virt_system_powerdown_notifier = {
--
1.8.3.1