From: aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Mon, 16 Feb 2009 15:36:08 +0000 (+0000)
Subject: Generate PCI hotplug interrupt only if corespondent EN bit is set. (Gleb Natapov)
X-Git-Tag: xen-3.4.0-rc2~12^2~60
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=1f0711e298ad9fc9c36a4d1c61d36d0dc4433f09;p=qemu-xen-3.4-testing.git

Generate PCI hotplug interrupt only if corespondent EN bit is set. (Gleb Natapov)

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6625 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/hw/acpi.c b/hw/acpi.c
index a59d7e29..31851585 100644
--- a/hw/acpi.c
+++ b/hw/acpi.c
@@ -724,25 +724,25 @@ void qemu_system_hot_add_init(void)
 static void enable_device(struct pci_status *p, struct gpe_regs *g, int slot)
 {
     g->sts |= 2;
-    g->en |= 2;
     p->up |= (1 << slot);
 }
 
 static void disable_device(struct pci_status *p, struct gpe_regs *g, int slot)
 {
     g->sts |= 2;
-    g->en |= 2;
     p->down |= (1 << slot);
 }
 
 void qemu_system_device_hot_add(int bus, int slot, int state)
 {
-    qemu_set_irq(pm_state->irq, 1);
     pci0_status.up = 0;
     pci0_status.down = 0;
     if (state)
         enable_device(&pci0_status, &gpe, slot);
     else
         disable_device(&pci0_status, &gpe, slot);
-    qemu_set_irq(pm_state->irq, 0);
+    if (gpe.en & 2) {
+        qemu_set_irq(pm_state->irq, 1);
+        qemu_set_irq(pm_state->irq, 0);
+    }
 }