On Thu, Dec 20, 2012 at 12:17:31AM +0100, Lucas Stach wrote:

static struct platform_driver wm9712_codec_driver = { .driver = { .name = "wm9712-codec", .owner = THIS_MODULE,

• .of_match_table = wm9712_of_match,
  

  },

No, this is really not a sane way of handling AC'97 at all. They're not platform devices, there is no sane reason why they should appear in the device tree as such. Really we ought to be just hotplugging them, AC'97 is perfectly enumerable.