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qom: Allow clearing of a Link property

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By passing in "" to object_property_set_link.

The lead user of this is the QDEV GPIO framework which will implement
GPIO disconnects via an "unlink".  GPIO disconnection is used by
qtest's irq_intercept_out command.

Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Crosthwaite 2014-09-25 22:19:19 -07:00 committed by Paolo Bonzini
parent 4adea8042f
commit d3c4931647
1 changed files with 7 additions and 3 deletions
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10
qom/object.c
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@ -872,9 +872,13 @@ char *object_property_get_str(Object *obj, const char *name,
void object_property_set_link(Object *obj, Object *value, void object_property_set_link(Object *obj, Object *value,
const char *name, Error **errp) const char *name, Error **errp)
{ {
gchar *path = object_get_canonical_path(value); if (value) {
object_property_set_str(obj, path, name, errp); gchar *path = object_get_canonical_path(value);
g_free(path); object_property_set_str(obj, path, name, errp);
g_free(path);
} else {
object_property_set_str(obj, "", name, errp);
}
} }
Object *object_property_get_link(Object *obj, const char *name, Object *object_property_get_link(Object *obj, const char *name,