From f75ea76ffb3226744b03232acd6039cb397a9e07 Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad@kernel.org>
Date: Tue, 14 May 2013 18:48:48 +0100
Subject: [PATCH] piix4acpi, xen: Clarify that the qemu_set_irq calls just do
 an IRQ pulse.

The "qemu_cpu_notify" raises and lowers the ACPI SCI line when the
vCPU state has changed.

Instead of doing the two functions, just use one function that
describes exactly what it does.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: George Dunlap <george.dunlap@eu.citrix.com> (for 4.3 release)
(cherry picked from commit e28e06225c4ee8793f935b0f72fe2d944a2d9b50)
---
 hw/piix4acpi.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/hw/piix4acpi.c b/hw/piix4acpi.c
index 54d566bb0..bf916d956 100644
--- a/hw/piix4acpi.c
+++ b/hw/piix4acpi.c
@@ -834,8 +834,6 @@ int qemu_cpu_add_remove(int cpu, int state)
 }
 void qemu_cpu_notify(void)
 {
-    if (gpe_state.gpe0_en[0] & 4) {
-        qemu_set_irq(sci_irq, 1);
-        qemu_set_irq(sci_irq, 0);
-    }
+    if (gpe_state.gpe0_en[0] & 4)
+        qemu_irq_pulse(sci_irq);
 }
-- 
2.39.5