[PATCH v2 1/2] hw/pci: Extract pci_bus_change_irq_level() from pci_change_irq_level()

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

Extract pci_bus_change_irq_level() from pci_change_irq_level() to
make it clearer it operates on the bus.

Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/pci/pci.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 100c9381c2f..081ddcadd15 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -248,6 +248,12 @@ static inline void pci_set_irq_state(PCIDevice *d, int irq_num, int level)
         d->irq_state |= level << irq_num;
 }
 
+static void pci_bus_change_irq_level(PCIBus *bus, int irq_num, int change)
+{
+    bus->irq_count[irq_num] += change;
+    bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
+}
+
 static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change)
 {
     PCIBus *bus;
@@ -258,8 +264,7 @@ static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change)
             break;
         pci_dev = bus->parent_dev;
     }
-    bus->irq_count[irq_num] += change;
-    bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
+    pci_bus_change_irq_level(bus, irq_num, change);
 }
 
 int pci_bus_get_irq_level(PCIBus *bus, int irq_num)
-- 
2.26.2