[Qemu-devel] [PATCH 3/6] pci: Helper function for testing if an INTx route changed

[Alex Williamson <alex.williamson@redhat.com>]

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---

 hw/pci.c |    5 +++++
 hw/pci.h |    1 +
 2 files changed, 6 insertions(+)

diff --git a/hw/pci.c b/hw/pci.c
index 9cb0ad4..6adb3b7 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -1102,6 +1102,11 @@ PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin)
     return (PCIINTxRoute) { PCI_INTX_NOROUTE, -1 };
 }
 
+bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new)
+{
+    return old->mode != new->mode || old->irq != new->irq;
+}
+
 void pci_bus_fire_intx_routing_notifier(PCIBus *bus)
 {
     PCIDevice *dev;
diff --git a/hw/pci.h b/hw/pci.h
index ed1a372..14ebb57 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -325,6 +325,7 @@ PCIBus *pci_register_bus(DeviceState *parent, const char *name,
                          uint8_t devfn_min, int nirq);
 void pci_bus_set_route_irq_fn(PCIBus *, pci_route_irq_fn);
 PCIINTxRoute pci_device_route_intx_to_irq(PCIDevice *dev, int pin);
+bool pci_intx_route_changed(PCIINTxRoute *old, PCIINTxRoute *new);
 void pci_bus_fire_intx_routing_notifier(PCIBus *bus);
 void pci_device_set_intx_routing_notifier(PCIDevice *dev,
                                           PCIINTxRoutingNotifier notifier);