[PULL 12/18] spapr: Use appropriate getter for PC_DIMM_SLOT_PROP

[David Gibson]

From: Greg Kurz <groug@kaod.org>

The PC_DIMM_SLOT_PROP property is defined as:

    DEFINE_PROP_INT32(PC_DIMM_SLOT_PROP, PCDIMMDevice, slot,
                      PC_DIMM_UNASSIGNED_SLOT),

Use object_property_get_int() instead of object_property_get_uint().
Since spapr_memory_plug() only gets called if pc_dimm_pre_plug()
succeeded, we expect to have a valid >= 0 slot number, either because
the user passed a valid slot number or because pc_dimm_get_free_slot()
picked one up for us.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <160309730758.2739814.15821922745424652642.stgit@bahia.lan>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/spapr.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index b2405599ad..f8856ccf27 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -3433,7 +3433,8 @@ static void spapr_memory_plug(HotplugHandler 
*hotplug_dev, DeviceState *dev,
     Error *local_err = NULL;
     SpaprMachineState *ms = SPAPR_MACHINE(hotplug_dev);
     PCDIMMDevice *dimm = PC_DIMM(dev);
-    uint64_t size, addr, slot;
+    uint64_t size, addr;
+    int64_t slot;
     bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
 
     size = memory_device_get_region_size(MEMORY_DEVICE(dev), &error_abort);
@@ -3450,11 +3451,13 @@ static void spapr_memory_plug(HotplugHandler 
*hotplug_dev, DeviceState *dev,
                        spapr_ovec_test(ms->ov5_cas, OV5_HP_EVT),
                        &local_err);
     } else {
-        slot = object_property_get_uint(OBJECT(dimm),
-                                        PC_DIMM_SLOT_PROP, &local_err);
+        slot = object_property_get_int(OBJECT(dimm),
+                                       PC_DIMM_SLOT_PROP, &local_err);
         if (local_err) {
             goto out_unplug;
         }
+        /* We should have valid slot number at this point */
+        g_assert(slot >= 0);
         spapr_add_nvdimm(dev, slot, &local_err);
     }
 
-- 
2.26.2