diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2006-10-05 15:06:34 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2007-02-09 09:00:07 +0100 |
| commit | c78085fcd2ce7cd036e1488472eb41a64d70949a (patch) | |
| tree | db48675117e830b287784bf68baadd286a12a6a7 | |
| parent | 12b131c4cf3eb1dc8a60082a434b7b100774c2e7 (diff) | |
[ALSA] alsa core: add struct device pointer to struct snd_pcm
This patch adds a struct device pointer to struct snd_pcm in order to be
able to give it a different device than the card. It defaults to the card's
device, however, so it should behave identically for drivers not touching
the field.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| -rw-r--r-- | include/sound/pcm.h | 1 | ||||
| -rw-r--r-- | sound/core/pcm.c | 18 |
2 files changed, 14 insertions, 5 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 2f645dfd7f7..016c41893b0 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -427,6 +427,7 @@ struct snd_pcm { wait_queue_head_t open_wait; void *private_data; void (*private_free) (struct snd_pcm *pcm); + struct device *dev; /* actual hw device this belongs to */ #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) struct snd_pcm_oss oss; #endif diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 8e018988551..4701f07ee0a 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -944,6 +944,7 @@ static int snd_pcm_dev_register(struct snd_device *device) struct list_head *list; char str[16]; struct snd_pcm *pcm = device->device_data; + struct device *dev; snd_assert(pcm != NULL && device != NULL, return -ENXIO); mutex_lock(®ister_mutex); @@ -966,11 +967,18 @@ static int snd_pcm_dev_register(struct snd_device *device) devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE; break; } - if ((err = snd_register_device(devtype, pcm->card, - pcm->device, - &snd_pcm_f_ops[cidx], - pcm, str)) < 0) - { + /* device pointer to use, pcm->dev takes precedence if + * it is assigned, otherwise fall back to card's device + * if possible */ + dev = pcm->dev; + if (!dev) + dev = pcm->card ? pcm->card->dev : NULL; + /* register pcm */ + err = snd_register_device_for_dev(devtype, pcm->card, + pcm->device, + &snd_pcm_f_ops[cidx], + pcm, str, dev); + if (err < 0) { list_del(&pcm->list); mutex_unlock(®ister_mutex); return err; |