QOM API learning curve is quite hard, in particular when devices inherit from
abstract parent.
To be more explicit about when a device class change the parent hooks, add few
helpers hoping a device class_init() will be easier to understand.
Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
include/hw/qdev-core.h | 10 ++++++++++
hw/core/qdev.c | 24 ++++++++++++++++++++++++
2 files changed, 34 insertions(+)
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index 83db53b3f5..0fc53b33d0 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -381,6 +381,16 @@ void qdev_machine_init(void);
*/
void device_reset(DeviceState *dev);
+void device_class_set_parent_reset(DeviceClass *dc,
+ DeviceReset dev_reset,
+ DeviceReset *parent_reset);
+void device_class_set_parent_realize(DeviceClass *dc,
+ DeviceRealize dev_realize,
+ DeviceRealize *parent_realize);
+void device_class_set_parent_unrealize(DeviceClass *dc,
+ DeviceUnrealize dev_unrealize,
+ DeviceUnrealize *parent_unrealize);
+
const struct VMStateDescription *qdev_get_vmsd(DeviceState *dev);
const char *qdev_fw_name(DeviceState *dev);
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index 11112951a5..a71cd264e2 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -1140,6 +1140,30 @@ static void device_class_init(ObjectClass *class, void
*data)
dc->user_creatable = true;
}
+void device_class_set_parent_reset(DeviceClass *dc,
+ DeviceReset dev_reset,
+ DeviceReset *parent_reset)
+{
+ *parent_reset = dc->reset;
+ dc->reset = dev_reset;
+}
+
+void device_class_set_parent_realize(DeviceClass *dc,
+ DeviceRealize dev_realize,
+ DeviceRealize *parent_realize)
+{
+ *parent_realize = dc->realize;
+ dc->realize = dev_realize;
+}
+
+void device_class_set_parent_unrealize(DeviceClass *dc,
+ DeviceUnrealize dev_unrealize,
+ DeviceUnrealize *parent_unrealize)
+{
+ *parent_unrealize = dc->unrealize;
+ dc->unrealize = dev_unrealize;
+}
+
void device_reset(DeviceState *dev)
{
DeviceClass *klass = DEVICE_GET_CLASS(dev);
--
2.15.1
