qdev: Introduce DEFINE_PROP_LINK

This property can be used to replace the object_property_add_link in
device code, to add a link to other objects, which is a common pattern.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170714021509.23681-4-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Fam Zheng 2017-07-14 10:14:52 +08:00 committed by Paolo Bonzini
parent faabdbb792
commit 5b4ff3c661
3 changed files with 28 additions and 0 deletions

View file

@ -1214,3 +1214,21 @@ PropertyInfo qdev_prop_size = {
.set = set_size,
.set_default_value = set_default_value_uint,
};
/* --- object link property --- */
static void create_link_property(Object *obj, Property *prop, Error **errp)
{
Object **child = qdev_get_prop_ptr(DEVICE(obj), prop);
object_property_add_link(obj, prop->name, prop->link_type,
child,
qdev_prop_allow_set_link_before_realize,
OBJ_PROP_LINK_UNREF_ON_RELEASE,
errp);
}
PropertyInfo qdev_prop_link = {
.name = "link",
.create = create_link_property,
};