static int __of_changeset_entry_apply()

in dynamic.c [570:660]

• 80 lines of code
• 19 McCabe index (conditional complexity)

static int __of_changeset_entry_apply(struct of_changeset_entry *ce)
{
	struct property *old_prop, **propp;
	unsigned long flags;
	int ret = 0;

	__of_changeset_entry_dump(ce);

	raw_spin_lock_irqsave(&devtree_lock, flags);
	switch (ce->action) {
	case OF_RECONFIG_ATTACH_NODE:
		__of_attach_node(ce->np);
		break;
	case OF_RECONFIG_DETACH_NODE:
		__of_detach_node(ce->np);
		break;
	case OF_RECONFIG_ADD_PROPERTY:
		/* If the property is in deadprops then it must be removed */
		for (propp = &ce->np->deadprops; *propp; propp = &(*propp)->next) {
			if (*propp == ce->prop) {
				*propp = ce->prop->next;
				ce->prop->next = NULL;
				break;
			}
		}

		ret = __of_add_property(ce->np, ce->prop);
		if (ret) {
			pr_err("changeset: add_property failed @%pOF/%s\n",
				ce->np,
				ce->prop->name);
			break;
		}
		break;
	case OF_RECONFIG_REMOVE_PROPERTY:
		ret = __of_remove_property(ce->np, ce->prop);
		if (ret) {
			pr_err("changeset: remove_property failed @%pOF/%s\n",
				ce->np,
				ce->prop->name);
			break;
		}
		break;

	case OF_RECONFIG_UPDATE_PROPERTY:
		/* If the property is in deadprops then it must be removed */
		for (propp = &ce->np->deadprops; *propp; propp = &(*propp)->next) {
			if (*propp == ce->prop) {
				*propp = ce->prop->next;
				ce->prop->next = NULL;
				break;
			}
		}

		ret = __of_update_property(ce->np, ce->prop, &old_prop);
		if (ret) {
			pr_err("changeset: update_property failed @%pOF/%s\n",
				ce->np,
				ce->prop->name);
			break;
		}
		break;
	default:
		ret = -EINVAL;
	}
	raw_spin_unlock_irqrestore(&devtree_lock, flags);

	if (ret)
		return ret;

	switch (ce->action) {
	case OF_RECONFIG_ATTACH_NODE:
		__of_attach_node_sysfs(ce->np);
		break;
	case OF_RECONFIG_DETACH_NODE:
		__of_detach_node_sysfs(ce->np);
		break;
	case OF_RECONFIG_ADD_PROPERTY:
		/* ignore duplicate names */
		__of_add_property_sysfs(ce->np, ce->prop);
		break;
	case OF_RECONFIG_REMOVE_PROPERTY:
		__of_remove_property_sysfs(ce->np, ce->prop);
		break;
	case OF_RECONFIG_UPDATE_PROPERTY:
		__of_update_property_sysfs(ce->np, ce->prop, ce->old_prop);
		break;
	}

	return 0;
}