[Qemu-devel] [PULL 15/21] hw/net/xilinx_axi: Use object_initialize_child for correct ref. counting

[Peter Maydell]

From: Philippe Mathieu-Daudé <address@hidden>

As explained in commit aff39be0ed97:

  Both functions, object_initialize() and object_property_add_child()
  increase the reference counter of the new object, so one of the
  references has to be dropped afterwards to get the reference
  counting right. Otherwise the child object will not be properly
  cleaned up when the parent gets destroyed.
  Thus let's use now object_initialize_child() instead to get the
  reference counting here right.

Reviewed-by: Alistair Francis <address@hidden>
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
Reviewed-by: Thomas Huth <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
Message-id: address@hidden
Signed-off-by: Peter Maydell <address@hidden>
---
 hw/net/xilinx_axienet.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/hw/net/xilinx_axienet.c b/hw/net/xilinx_axienet.c
index d8716a1f737..2c8c065401a 100644
--- a/hw/net/xilinx_axienet.c
+++ b/hw/net/xilinx_axienet.c
@@ -994,15 +994,14 @@ static void xilinx_enet_init(Object *obj)
     XilinxAXIEnet *s = XILINX_AXI_ENET(obj);
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 
-    object_initialize(&s->rx_data_dev, sizeof(s->rx_data_dev),
-                      TYPE_XILINX_AXI_ENET_DATA_STREAM);
-    object_initialize(&s->rx_control_dev, sizeof(s->rx_control_dev),
-                      TYPE_XILINX_AXI_ENET_CONTROL_STREAM);
-    object_property_add_child(OBJECT(s), "axistream-connected-target",
-                              (Object *)&s->rx_data_dev, &error_abort);
-    object_property_add_child(OBJECT(s), "axistream-control-connected-target",
-                              (Object *)&s->rx_control_dev, &error_abort);
-
+    object_initialize_child(OBJECT(s), "axistream-connected-target",
+                            &s->rx_data_dev, sizeof(s->rx_data_dev),
+                            TYPE_XILINX_AXI_ENET_DATA_STREAM, &error_abort,
+                            NULL);
+    object_initialize_child(OBJECT(s), "axistream-control-connected-target",
+                            &s->rx_control_dev, sizeof(s->rx_control_dev),
+                            TYPE_XILINX_AXI_ENET_CONTROL_STREAM, &error_abort,
+                            NULL);
     sysbus_init_irq(sbd, &s->irq);
 
     memory_region_init_io(&s->iomem, OBJECT(s), &enet_ops, s, "enet", 0x40000);
-- 
2.20.1