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-rw-r--r--hw/pci/pci.c28
-rw-r--r--hw/ppc/spapr_pci.c12
2 files changed, 34 insertions, 6 deletions
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index a563555..273f1e4 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -1530,6 +1530,34 @@ static const pci_class_desc pci_class_descriptions[] =
{ 0, NULL}
};
+static void pci_for_each_device_under_bus_reverse(PCIBus *bus,
+ void (*fn)(PCIBus *b,
+ PCIDevice *d,
+ void *opaque),
+ void *opaque)
+{
+ PCIDevice *d;
+ int devfn;
+
+ for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
+ d = bus->devices[ARRAY_SIZE(bus->devices) - 1 - devfn];
+ if (d) {
+ fn(bus, d, opaque);
+ }
+ }
+}
+
+void pci_for_each_device_reverse(PCIBus *bus, int bus_num,
+ void (*fn)(PCIBus *b, PCIDevice *d, void *opaque),
+ void *opaque)
+{
+ bus = pci_find_bus_nr(bus, bus_num);
+
+ if (bus) {
+ pci_for_each_device_under_bus_reverse(bus, fn, opaque);
+ }
+}
+
static void pci_for_each_device_under_bus(PCIBus *bus,
void (*fn)(PCIBus *b, PCIDevice *d,
void *opaque),
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 1c4fa8b..84a0f31 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -2044,9 +2044,9 @@ static void spapr_populate_pci_devices_dt(PCIBus *bus, PCIDevice *pdev,
s_fdt.fdt = p->fdt;
s_fdt.node_off = offset;
s_fdt.sphb = p->sphb;
- pci_for_each_device(sec_bus, pci_bus_num(sec_bus),
- spapr_populate_pci_devices_dt,
- &s_fdt);
+ pci_for_each_device_reverse(sec_bus, pci_bus_num(sec_bus),
+ spapr_populate_pci_devices_dt,
+ &s_fdt);
}
static void spapr_phb_pci_enumerate_bridge(PCIBus *bus, PCIDevice *pdev,
@@ -2215,9 +2215,9 @@ int spapr_populate_pci_dt(sPAPRPHBState *phb,
s_fdt.fdt = fdt;
s_fdt.node_off = bus_off;
s_fdt.sphb = phb;
- pci_for_each_device(bus, pci_bus_num(bus),
- spapr_populate_pci_devices_dt,
- &s_fdt);
+ pci_for_each_device_reverse(bus, pci_bus_num(bus),
+ spapr_populate_pci_devices_dt,
+ &s_fdt);
ret = spapr_drc_populate_dt(fdt, bus_off, OBJECT(phb),
SPAPR_DR_CONNECTOR_TYPE_PCI);