On Tue, Jan 29, 2013 at 09:54:11AM +0800, Mark Brown wrote:

> It would break anyway, like I say the interface relies on it currently.
> The other option is to do a callback into the bus code and return the
> contained structure but it seemed more involved and this is fairly
> idiomatic.

Actually I'll just do that, we have to provide the size to the core
anyway.  Thanks.