[Qemu-ppc] [PULL 13/18] spapr_cpu_core: fail gracefully with non-pseries machine types

[David Gibson]

From: Greg Kurz <address@hidden>

Since commit 7cca3e466eb0 ("ppc: spapr: Move VCPU ID calculation into
sPAPR"), QEMU aborts when started with a *-spapr-cpu-core device and
a non-pseries machine.

Let's rely on the already existing call to object_dynamic_cast() instead
of using the SPAPR_MACHINE() macro.

Signed-off-by: Greg Kurz <address@hidden>
Signed-off-by: David Gibson <address@hidden>
---
 hw/ppc/spapr_cpu_core.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c
index 85037ef71e..3f7ef20910 100644
--- a/hw/ppc/spapr_cpu_core.c
+++ b/hw/ppc/spapr_cpu_core.c
@@ -213,7 +213,7 @@ error:
 
 static void spapr_cpu_core_realize(DeviceState *dev, Error **errp)
 {
-    sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
+    sPAPRMachineState *spapr;
     sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev));
     sPAPRCPUCoreClass *scc = SPAPR_CPU_CORE_GET_CLASS(OBJECT(dev));
     CPUCore *cc = CPU_CORE(OBJECT(dev));
@@ -223,7 +223,8 @@ static void spapr_cpu_core_realize(DeviceState *dev, Error 
**errp)
     void *obj;
     int i, j;
 
-    if (!object_dynamic_cast(qdev_get_machine(), TYPE_SPAPR_MACHINE)) {
+    spapr = (sPAPRMachineState *) qdev_get_machine();
+    if (!object_dynamic_cast((Object *) spapr, TYPE_SPAPR_MACHINE)) {
         error_setg(errp, "spapr-cpu-core needs a pseries machine");
         return;
     }
-- 
2.13.5