diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2005-12-07 11:11:05 +0300 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-01-03 14:30:36 +0300 |
| commit | 416c1079d30f1a52399b96f6772e993274b774ae (patch) | |
| tree | cac70f2afaa88469db6e2ca231e4566046e0c363 | |
| parent | 156b2aa3bef17c964006c6448aadd440781d7e7d (diff) | |
| download | linux-416c1079d30f1a52399b96f6772e993274b774ae.tar.xz | |
[ALSA] Nest sound devices
Modules: ALSA Core
Make the control device parent of all other ALSA devices of a card.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
| -rw-r--r-- | include/sound/core.h | 1 | ||||
| -rw-r--r-- | sound/core/device.c | 2 | ||||
| -rw-r--r-- | sound/core/sound.c | 11 |
3 files changed, 11 insertions, 3 deletions
diff --git a/include/sound/core.h b/include/sound/core.h index 90ac6132ea3b..dbe7a2c30272 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -134,6 +134,7 @@ struct snd_card { wait_queue_head_t shutdown_sleep; struct work_struct free_workq; /* for free in workqueue */ struct device *dev; + struct class_device *parent_device; #ifdef CONFIG_PM unsigned int power_state; /* power state */ diff --git a/sound/core/device.c b/sound/core/device.c index b1cf6ec56784..478264cab67e 100644 --- a/sound/core/device.c +++ b/sound/core/device.c @@ -193,7 +193,7 @@ int snd_device_register_all(struct snd_card *card) int err; snd_assert(card != NULL, return -ENXIO); - list_for_each(list, &card->devices) { + list_for_each_prev(list, &card->devices) { dev = snd_device(list); if (dev->state == SNDRV_DEV_BUILD && dev->ops->dev_register) { if ((err = dev->ops->dev_register(dev)) < 0) diff --git a/sound/core/sound.c b/sound/core/sound.c index a8eda02bcf1c..2f6108deb211 100644 --- a/sound/core/sound.c +++ b/sound/core/sound.c @@ -245,6 +245,7 @@ int snd_register_device(int type, struct snd_card *card, int dev, int minor; struct snd_minor *preg; struct device *device = NULL; + struct class_device *class_device = NULL; snd_assert(name, return -EINVAL); preg = kmalloc(sizeof(struct snd_minor) + strlen(name) + 1, GFP_KERNEL); @@ -272,9 +273,15 @@ int snd_register_device(int type, struct snd_card *card, int dev, snd_minors[minor] = preg; if (type != SNDRV_DEVICE_TYPE_CONTROL || preg->card >= cards_limit) devfs_mk_cdev(MKDEV(major, minor), S_IFCHR | device_mode, "snd/%s", name); - if (card) + if (card) { device = card->dev; - class_device_create(sound_class, NULL, MKDEV(major, minor), device, "%s", name); + class_device = card->parent_device; + } + class_device = class_device_create(sound_class, class_device, + MKDEV(major, minor), device, + "%s", name); + if (type == SNDRV_DEVICE_TYPE_CONTROL) + card->parent_device = class_device; up(&sound_mutex); return 0; |