qbus_new() should not be called on unrealized device.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/ppc/spapr_vio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/ppc/spapr_vio.c b/hw/ppc/spapr_vio.c
index 9d4fec2c04..f8ef2b6fa8 100644
--- a/hw/ppc/spapr_vio.c
+++ b/hw/ppc/spapr_vio.c
@@ -574,13 +574,14 @@ SpaprVioBus *spapr_vio_bus_init(void)
 
     /* Create bridge device */
     dev = qdev_new(TYPE_SPAPR_VIO_BRIDGE);
-    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 
     /* Create bus on bridge device */
     qbus = qbus_new(TYPE_SPAPR_VIO_BUS, dev, "spapr-vio");
     bus = SPAPR_VIO_BUS(qbus);
     bus->next_reg = SPAPR_VIO_REG_BASE;
 
+    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+
     /* hcall-vio */
     spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal);
 
-- 
2.41.0

On 19/10/2023 15.16, Philippe Mathieu-Daudé wrote:
> qbus_new() should not be called on unrealized device.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   hw/ppc/spapr_vio.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/hw/ppc/spapr_vio.c b/hw/ppc/spapr_vio.c
> index 9d4fec2c04..f8ef2b6fa8 100644
> --- a/hw/ppc/spapr_vio.c
> +++ b/hw/ppc/spapr_vio.c
> @@ -574,13 +574,14 @@ SpaprVioBus *spapr_vio_bus_init(void)
>   
>       /* Create bridge device */
>       dev = qdev_new(TYPE_SPAPR_VIO_BRIDGE);
> -    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
>   
>       /* Create bus on bridge device */
>       qbus = qbus_new(TYPE_SPAPR_VIO_BUS, dev, "spapr-vio");
>       bus = SPAPR_VIO_BUS(qbus);
>       bus->next_reg = SPAPR_VIO_REG_BASE;
>   
> +    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
> +
>       /* hcall-vio */
>       spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal);

Reviewed-by: Thomas Huth <thuth@redhat.com>