- Fix wrong id for ALC882, add ALC883 id.

- Add support for the Conexant Waikiki/CX20551-22, found
  in most Toshiba P100 series laptops. Despite of growing
  urban legend of "unsupported Conexant", this codec is fully
  supported in this driver.
  Note: Toshiba P100 has broken (acpi) BIOS, thus rendering
        its soundchip useless. Please disable ACPI, or get
        BIOS updates (if any).

  Found/tested by: Vulpes Velox <v.velox@vvelox.net>
  URL: http://lists.freebsd.org/pipermail/freebsd-multimedia/2006-September/004896.html

- Parser cleanups to handle possible oss/mixer collision. Found
  after parsing Conexant Waikiki nodes.

- Increase resilient against resource failure during attach/detach.

- Implement simple config through hint.pcm.<unit>.config. Supported
  options:
    gpio0 (default on Acer), gpio1, gpio2, softpcmvol,
    fixedrate (default), forcestereo (default)
  * Option prefixed with "no" (such as "nofixedrate") will do
    the opposite.
  * Options can be separated using space " " or comma ",".
  * The "no" option will take precedence over anything else.
  Example:
    hint.pcm.0.config="gpio2,nofixedrate,noforcestereo,nogpio0,softpcmvol"
    hint.pcm.0.config="softpcmvol noforcestereo"

sys/dev/sound/pci/hda/hdac_private.h

@@ -170,8 +170,6 @@ struct hdac_codec {
 	nid_t	cad;
 	struct hdac_command_list *commands;
 	struct hdac_softc *sc;
-
-	SLIST_ENTRY(hdac_codec)	next_codec;
 };
 
 struct hdac_bdle {
@@ -321,7 +319,6 @@ struct hdac_softc {
 	uint32_t	unsolq[HDAC_UNSOLQ_MAX];
 
 	struct hdac_codec *codecs[HDAC_CODEC_MAX];
-	SLIST_HEAD(hdac_codec_list_head, hdac_codec) codec_list;
 
 	int		registered;
 };