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[PATCH v2 3/3] sam460ex: Use type cast macro instead of simple cast

From: BALATON Zoltan
Subject: [PATCH v2 3/3] sam460ex: Use type cast macro instead of simple cast
Date: Fri, 08 Jan 2021 23:07:38 +0100

Use the PCI_BUS type cast macro to convert result of qdev_get_child_bus().
Also remove the check for NULL afterwards which should not be needed
because sysbus_create_simple() uses error_abort and we create the PCI
host object here that's expected to have a PCI bus so this shouldn't
fail. Even if it would fail that would be due to a programmer error so
an error message is not necessary.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
 hw/ppc/sam460ex.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c
index 45721ad6c7..e459b43065 100644
--- a/hw/ppc/sam460ex.c
+++ b/hw/ppc/sam460ex.c
@@ -419,11 +419,8 @@ static void sam460ex_init(MachineState *machine)
     /* All PCI irqs are connected to the same UIC pin (cf. UBoot source) */
     dev = sysbus_create_simple("ppc440-pcix-host", 0xc0ec00000,
                                qdev_get_gpio_in(uic[1], 0));
-    pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci.0");
-    if (!pci_bus) {
-        error_report("couldn't create PCI controller!");
-        exit(1);
-    }
+    pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci.0"));
     memory_region_init_alias(isa, NULL, "isa_mmio", get_system_io(),
                              0, 0x10000);
     memory_region_add_subregion(get_system_memory(), 0xc08000000, isa);

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