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Diffstat (limited to '')
| -rw-r--r-- | sound/core/device.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/sound/core/device.c b/sound/core/device.c index cdc5af526739..b57d80a17052 100644 --- a/sound/core/device.c +++ b/sound/core/device.c @@ -237,3 +237,26 @@ void snd_device_free_all(struct snd_card *card) list_for_each_entry_safe_reverse(dev, next, &card->devices, list) __snd_device_free(dev); } + +/** + * snd_device_get_state - Get the current state of the given device + * @card: the card instance + * @device_data: the data pointer to release + * + * Returns the current state of the given device object. For the valid + * device, either @SNDRV_DEV_BUILD, @SNDRV_DEV_REGISTERED or + * @SNDRV_DEV_DISCONNECTED is returned. + * Or for a non-existing device, -1 is returned as an error. + * + * Return: the current state, or -1 if not found + */ +int snd_device_get_state(struct snd_card *card, void *device_data) +{ + struct snd_device *dev; + + dev = look_for_dev(card, device_data); + if (dev) + return dev->state; + return -1; +} +EXPORT_SYMBOL_GPL(snd_device_get_state); |