diff options
| -rw-r--r-- | include/sound/core.h | 2 | ||||
| -rw-r--r-- | sound/core/init.c | 23 |
2 files changed, 25 insertions, 0 deletions
diff --git a/include/sound/core.h b/include/sound/core.h index 39d14234961d..de7a878217d7 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -207,6 +207,8 @@ extern struct class *sound_class; void snd_request_card(int card); +void snd_device_initialize(struct device *dev, struct snd_card *card); + int snd_register_device_for_dev(int type, struct snd_card *card, int dev, const struct file_operations *f_ops, void *private_data, struct device *device, diff --git a/sound/core/init.c b/sound/core/init.c index 074875d68c15..96194599e82e 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -157,6 +157,29 @@ static int get_slot_from_bitmask(int mask, int (*check)(struct module *, int), return mask; /* unchanged */ } +/* the default release callback set in snd_device_initialize() below; + * this is just NOP for now, as almost all jobs are already done in + * dev_free callback of snd_device chain instead. + */ +static void default_release(struct device *dev) +{ +} + +/** + * snd_device_initialize - Initialize struct device for sound devices + * @dev: device to initialize + * @card: card to assign, optional + */ +void snd_device_initialize(struct device *dev, struct snd_card *card) +{ + device_initialize(dev); + if (card) + dev->parent = &card->card_dev; + dev->class = sound_class; + dev->release = default_release; +} +EXPORT_SYMBOL_GPL(snd_device_initialize); + static int snd_card_do_free(struct snd_card *card); static const struct attribute_group *card_dev_attr_groups[]; |