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authorTakashi Iwai <tiwai@suse.de>2014-10-30 17:19:43 +0300
committerTakashi Iwai <tiwai@suse.de>2014-10-30 17:42:32 +0300
commiteb9c38d54c9cad72101dfe7fefe4a784dd67da86 (patch)
tree51a7f55b8d7e3b47ad4775d8622ac314643d71a0 /sound/core
parent85926e0fe8b48fe6227614ddc3a1cb41c0a3c51a (diff)
downloadlinux-eb9c38d54c9cad72101dfe7fefe4a784dd67da86.tar.xz
ALSA: doc: More kerneldoc comments on core components
Some functions missed the proper kerneldoc comments. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
-rw-r--r--sound/core/init.c33
-rw-r--r--sound/core/sound.c9
2 files changed, 29 insertions, 13 deletions
diff --git a/sound/core/init.c b/sound/core/init.c
index 7bdfd19e24a8..074875d68c15 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -438,17 +438,6 @@ int snd_card_disconnect(struct snd_card *card)
EXPORT_SYMBOL(snd_card_disconnect);
-/**
- * snd_card_free - frees given soundcard structure
- * @card: soundcard structure
- *
- * This function releases the soundcard structure and the all assigned
- * devices automatically. That is, you don't have to release the devices
- * by yourself.
- *
- * Return: Zero. Frees all associated devices and frees the control
- * interface associated to given soundcard.
- */
static int snd_card_do_free(struct snd_card *card)
{
#if IS_ENABLED(CONFIG_SND_MIXER_OSS)
@@ -469,6 +458,15 @@ static int snd_card_do_free(struct snd_card *card)
return 0;
}
+/**
+ * snd_card_free_when_closed - Disconnect the card, free it later eventually
+ * @card: soundcard structure
+ *
+ * Unlike snd_card_free(), this function doesn't try to release the card
+ * resource immediately, but tries to disconnect at first. When the card
+ * is still in use, the function returns before freeing the resources.
+ * The card resources will be freed when the refcount gets to zero.
+ */
int snd_card_free_when_closed(struct snd_card *card)
{
int ret = snd_card_disconnect(card);
@@ -479,6 +477,19 @@ int snd_card_free_when_closed(struct snd_card *card)
}
EXPORT_SYMBOL(snd_card_free_when_closed);
+/**
+ * snd_card_free - frees given soundcard structure
+ * @card: soundcard structure
+ *
+ * This function releases the soundcard structure and the all assigned
+ * devices automatically. That is, you don't have to release the devices
+ * by yourself.
+ *
+ * This function waits until the all resources are properly released.
+ *
+ * Return: Zero. Frees all associated devices and frees the control
+ * interface associated to given soundcard.
+ */
int snd_card_free(struct snd_card *card)
{
struct completion released;
diff --git a/sound/core/sound.c b/sound/core/sound.c
index 38ad1a0dd3f7..f1333060bf1c 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -355,8 +355,13 @@ int snd_unregister_device(int type, struct snd_card *card, int dev)
EXPORT_SYMBOL(snd_unregister_device);
-/* get the assigned device to the given type and device number;
- * the caller needs to release it via put_device() after using it
+/**
+ * snd_get_device - get the assigned device to the given type and device number
+ * @type: the device type, SNDRV_DEVICE_TYPE_XXX
+ * @card:the card instance
+ * @dev: the device index
+ *
+ * The caller needs to release it via put_device() after using it.
*/
struct device *snd_get_device(int type, struct snd_card *card, int dev)
{