[PULL 10/53] dino: return PCIBus from dino_init() using qdev_get_child_bus()

[Mark Cave-Ayland]

This allows access to the PCI bus without having to reference parent_obj 
directly.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Helge Deller <deller@gmx.de>
Message-Id: <20220504092600.10048-11-mark.cave-ayland@ilande.co.uk>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 hw/hppa/dino.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/hppa/dino.c b/hw/hppa/dino.c
index 77b8089664..d89b48493f 100644
--- a/hw/hppa/dino.c
+++ b/hw/hppa/dino.c
@@ -523,14 +523,12 @@ PCIBus *dino_init(MemoryRegion *addr_space,
 {
     DeviceState *dev;
     DinoState *s;
-    PCIBus *b;
+    PCIBus *pci_bus;
 
     dev = qdev_new(TYPE_DINO_PCI_HOST_BRIDGE);
     object_property_set_link(OBJECT(dev), "memory-as", OBJECT(addr_space),
                              &error_fatal);
     s = DINO_PCI_HOST_BRIDGE(dev);
-
-    b = s->parent_obj.bus;
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 
     memory_region_add_subregion(addr_space, DINO_HPA,
@@ -539,7 +537,8 @@ PCIBus *dino_init(MemoryRegion *addr_space,
     *p_rtc_irq = qemu_allocate_irq(dino_set_timer_irq, s, 0);
     *p_ser_irq = qemu_allocate_irq(dino_set_serial_irq, s, 0);
 
-    return b;
+    pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci"));
+    return pci_bus;
 }
 
 static void dino_pcihost_reset(DeviceState *dev)
-- 
2.20.1