[patch 04/23] QEMU/KVM: add pci_find_bus

[Marcelo Tosatti <mtosatti@redhat.com>]

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Return PCIBus pointer from bus number integer.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Index: kvm-userspace.hotplug/qemu/hw/pci.c
===================================================================
--- kvm-userspace.hotplug.orig/qemu/hw/pci.c
+++ kvm-userspace.hotplug/qemu/hw/pci.c
@@ -675,6 +675,16 @@ static void pci_bridge_write_config(PCID
     pci_default_write_config(d, address, val, len);
 }
 
+PCIBus *pci_find_bus(int bus_num)
+{
+    PCIBus *bus = first_bus;
+
+    while (bus && bus->bus_num != bus_num)
+        bus = bus->next;
+
+    return bus;
+}
+
 PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint32_t id,
                         pci_map_irq_fn map_irq, const char *name)
 {
Index: kvm-userspace.hotplug/qemu/hw/pci.h
===================================================================
--- kvm-userspace.hotplug.orig/qemu/hw/pci.h
+++ kvm-userspace.hotplug/qemu/hw/pci.h
@@ -3,6 +3,7 @@
 
 /* PCI includes legacy ISA access.  */
 #include "isa.h"
+#include <linux/pci.h>
 
 /* PCI bus */
 
@@ -91,6 +92,7 @@ void pci_data_write(void *opaque, uint32
 uint32_t pci_data_read(void *opaque, uint32_t addr, int len);
 int pci_bus_num(PCIBus *s);
 void pci_for_each_device(int bus_num, void (*fn)(PCIDevice *d));
+PCIBus *pci_find_bus(int bus_num);
 
 void pci_info(void);
 PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint32_t id,

-- 


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