diff options
| author | Barry Song <21cnbao@gmail.com> | 2009-11-12 12:01:47 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-11-12 16:45:52 +0000 |
| commit | f773205300fa4a5a405f8ed6e3bb97e46c6eefb4 (patch) | |
| tree | 4f51630208ffb52d5e8e59b033437e3964265c61 | |
| parent | ba2b87f5a93659a28cc4fb812ccd7b4146ac3aa9 (diff) | |
ASoC: move setting ac97 platformdata earlier than ac97 read/write
While probing, AC97 codec drivers and soc-core generically execute the
following sequence:
snd_soc_new_ac97_codec -> snd_soc_new_pcms -> reset ac-link/read AC97 ID
to detect ->... -> set platform_data to ac97 by soc-core
commit 474828a40f6ddab6e2a3475a19c5c84aa3ec7d60 adds platform_data to
snd_ac97 instance. But ac97 platform data hasn't given to snd_ac97
before actual ac97 operations. Then while ac97_read access platform_data
of snd_ac97 for detecting, NULL pointer oops will fire. That means old
platform_data patch doesn't work in real-life cases.
This patch moves the operation of setting ac97 platform_data earlier
than ac97 reading/writing operations. Then it makes platform_data of
AC97 become practically useful.
Signed-off-by: Barry Song <21cnbao@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | sound/soc/soc-core.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index e2b6d75f16e..ef8f28284cb 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1083,11 +1083,8 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card) continue; } } - if (card->dai_link[i].codec_dai->ac97_control) { + if (card->dai_link[i].codec_dai->ac97_control) ac97 = 1; - snd_ac97_dev_add_pdata(codec->ac97, - card->dai_link[i].cpu_dai->ac97_pdata); - } } snprintf(codec->card->shortname, sizeof(codec->card->shortname), @@ -1510,6 +1507,10 @@ int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid) mutex_unlock(&codec->mutex); return ret; } + if (card->dai_link[i].codec_dai->ac97_control) { + snd_ac97_dev_add_pdata(codec->ac97, + card->dai_link[i].cpu_dai->ac97_pdata); + } } mutex_unlock(&codec->mutex); |