pci: use uint8_t for devfn_min

use uint8_t for devfn_min instead of int.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

hw/pci.c

@@ -256,7 +256,7 @@ int pci_find_domain(const PCIBus *bus)
 }
 
 void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
-                         const char *name, int devfn_min)
+                         const char *name, uint8_t devfn_min)
 {
     qbus_create_inplace(&bus->qbus, &pci_bus_info, parent, name);
     assert(PCI_FUNC(devfn_min) == 0);
@@ -269,7 +269,7 @@ void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
     vmstate_register(NULL, -1, &vmstate_pcibus, bus);
 }
 
-PCIBus *pci_bus_new(DeviceState *parent, const char *name, int devfn_min)
+PCIBus *pci_bus_new(DeviceState *parent, const char *name, uint8_t devfn_min)
 {
     PCIBus *bus;
 
@@ -303,7 +303,7 @@ void pci_bus_set_mem_base(PCIBus *bus, target_phys_addr_t base)
 
 PCIBus *pci_register_bus(DeviceState *parent, const char *name,
                          pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
-                         void *irq_opaque, int devfn_min, int nirq)
+                         void *irq_opaque, uint8_t devfn_min, int nirq)
 {
     PCIBus *bus;
 

hw/pci.h

@@ -230,14 +230,14 @@ typedef enum {
 typedef int (*pci_hotplug_fn)(DeviceState *qdev, PCIDevice *pci_dev,
                               PCIHotplugState state);
 void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
-                         const char *name, int devfn_min);
-PCIBus *pci_bus_new(DeviceState *parent, const char *name, int devfn_min);
+                         const char *name, uint8_t devfn_min);
+PCIBus *pci_bus_new(DeviceState *parent, const char *name, uint8_t devfn_min);
 void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
                   void *irq_opaque, int nirq);
 void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *dev);
 PCIBus *pci_register_bus(DeviceState *parent, const char *name,
                          pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
-                         void *irq_opaque, int devfn_min, int nirq);
+                         void *irq_opaque, uint8_t devfn_min, int nirq);
 void pci_device_reset(PCIDevice *dev);
 void pci_bus_reset(PCIBus *bus);
 

hw/pci_internals.h

@@ -16,7 +16,7 @@ extern struct BusInfo pci_bus_info;
 
 struct PCIBus {
     BusState qbus;
-    int devfn_min;
+    uint8_t devfn_min;
     pci_set_irq_fn set_irq;
     pci_map_irq_fn map_irq;
     pci_hotplug_fn hotplug;