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[ALSA] ASoC AC97 device reg bugfix

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This patch fixes a bug whereby AC97 bus device data was being clobbered
when AC97 codecs using the generic ac97_codec.c driver were being
registered. Codecs that didn't use the generic driver were unaffected
(e.g. WM9712, WM9713).
Changes:-
 o Add new AC97 codec class for custom (or need bus dev registration)
AC97 codecs.
 o Only register/deregister this custom codec device with the AC97 bus.
The generic AC97 driver already does this for generic codec devices.
This may be related to bug #3038 :-
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3038

Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Liam Girdwood
2007-05-10 19:27:27 +02:00
committed by Jaroslav Kysela
parent 9ae67c7b87
commit a68660e0c6
4 changed files with 20 additions and 4 deletions
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1
sound/soc/codecs/wm9712.c
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@@ -544,6 +544,7 @@ static int ac97_aux_prepare(struct snd_pcm_substream *substream)
struct snd_soc_codec_dai wm9712_dai[] = {
{
.name = "AC97 HiFi",
.type = SND_SOC_DAI_AC97_BUS,
.playback = {
.stream_name = "HiFi Playback",
.channels_min = 1,