On Mon, May 16, 2016 at 02:58:13PM +0200, Takashi Iwai wrote:
> Robert Jarzmik wrote:

> > Even if I'd like to not have these in bus operations, the struct snd_ac97 had a
> > need for a 'caps', 'ext_id', ... fields for example. Yet these could be
> > contained in the ac97_codec_device structure and not exposed to bus operations.

> Do we have any example of such exceptions?  For AC97, we don't need to
> think of future extensions at all.

I can't think of any, even for some of the more fancy CODECs used in
embedded systems.