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ALSA: control: Add missing kerneldoc comments to exported functions

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A few functions have no proper documentation yet, so let's add them.
Along with it, remove superfluous blank line between the closing brace
and EXPORT_SYMBOL() line.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-10-30 13:44:34 +01:00
parent 438f4e2801
commit 12cddbd869
1 changed files with 49 additions and 15 deletions
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64
sound/core/control.c
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@ -141,6 +141,16 @@ static int snd_ctl_release(struct inode *inode, struct file *file)
return 0;
}
/**
* snd_ctl_notify - Send notification to user-space for a control change
* @card: the card to send notification
* @mask: the event mask, SNDRV_CTL_EVENT_*
* @id: the ctl element id to send notification
*
* This function adds an event record with the given id and mask, appends
* to the list and wakes up the user-space for notification. This can be
* called in the atomic context.
*/
void snd_ctl_notify(struct snd_card *card, unsigned int mask,
struct snd_ctl_elem_id *id)
{
@ -179,7 +189,6 @@ void snd_ctl_notify(struct snd_card *card, unsigned int mask,
}
read_unlock(&card->ctl_files_rwlock);
}
EXPORT_SYMBOL(snd_ctl_notify);
/**
@ -261,7 +270,6 @@ struct snd_kcontrol *snd_ctl_new1(const struct snd_kcontrol_new *ncontrol,
kctl.private_data = private_data;
return snd_ctl_new(&kctl, access);
}
EXPORT_SYMBOL(snd_ctl_new1);
/**
@ -280,7 +288,6 @@ void snd_ctl_free_one(struct snd_kcontrol *kcontrol)
kfree(kcontrol);
}
}
EXPORT_SYMBOL(snd_ctl_free_one);
static bool snd_ctl_remove_numid_conflict(struct snd_card *card,
@ -376,7 +383,6 @@ int snd_ctl_add(struct snd_card *card, struct snd_kcontrol *kcontrol)
snd_ctl_free_one(kcontrol);
return err;
}
EXPORT_SYMBOL(snd_ctl_add);
/**
@ -471,7 +477,6 @@ int snd_ctl_remove(struct snd_card *card, struct snd_kcontrol *kcontrol)
snd_ctl_free_one(kcontrol);
return 0;
}
EXPORT_SYMBOL(snd_ctl_remove);
/**
@ -499,7 +504,6 @@ int snd_ctl_remove_id(struct snd_card *card, struct snd_ctl_elem_id *id)
up_write(&card->controls_rwsem);
return ret;
}
EXPORT_SYMBOL(snd_ctl_remove_id);
/**
@ -617,7 +621,6 @@ int snd_ctl_rename_id(struct snd_card *card, struct snd_ctl_elem_id *src_id,
up_write(&card->controls_rwsem);
return 0;
}
EXPORT_SYMBOL(snd_ctl_rename_id);
/**
@ -645,7 +648,6 @@ struct snd_kcontrol *snd_ctl_find_numid(struct snd_card *card, unsigned int numi
}
return NULL;
}
EXPORT_SYMBOL(snd_ctl_find_numid);
/**
@ -687,7 +689,6 @@ struct snd_kcontrol *snd_ctl_find_id(struct snd_card *card,
}
return NULL;
}
EXPORT_SYMBOL(snd_ctl_find_id);
static int snd_ctl_card_info(struct snd_card *card, struct snd_ctl_file * ctl,
@ -1526,19 +1527,28 @@ static int _snd_ctl_register_ioctl(snd_kctl_ioctl_func_t fcn, struct list_head *
return 0;
}
/**
* snd_ctl_register_ioctl - register the device-specific control-ioctls
* @fcn: ioctl callback function
*
* called from each device manager like pcm.c, hwdep.c, etc.
*/
int snd_ctl_register_ioctl(snd_kctl_ioctl_func_t fcn)
{
return _snd_ctl_register_ioctl(fcn, &snd_control_ioctls);
}
EXPORT_SYMBOL(snd_ctl_register_ioctl);
#ifdef CONFIG_COMPAT
/**
* snd_ctl_register_ioctl_compat - register the device-specific 32bit compat
* control-ioctls
* @fcn: ioctl callback function
*/
int snd_ctl_register_ioctl_compat(snd_kctl_ioctl_func_t fcn)
{
return _snd_ctl_register_ioctl(fcn, &snd_control_compat_ioctls);
}
EXPORT_SYMBOL(snd_ctl_register_ioctl_compat);
#endif
@ -1566,19 +1576,26 @@ static int _snd_ctl_unregister_ioctl(snd_kctl_ioctl_func_t fcn,
return -EINVAL;
}
/**
* snd_ctl_unregister_ioctl - de-register the device-specific control-ioctls
* @fcn: ioctl callback function to unregister
*/
int snd_ctl_unregister_ioctl(snd_kctl_ioctl_func_t fcn)
{
return _snd_ctl_unregister_ioctl(fcn, &snd_control_ioctls);
}
EXPORT_SYMBOL(snd_ctl_unregister_ioctl);
#ifdef CONFIG_COMPAT
/**
* snd_ctl_unregister_ioctl - de-register the device-specific compat 32bit
* control-ioctls
* @fcn: ioctl callback function to unregister
*/
int snd_ctl_unregister_ioctl_compat(snd_kctl_ioctl_func_t fcn)
{
return _snd_ctl_unregister_ioctl(fcn, &snd_control_compat_ioctls);
}
EXPORT_SYMBOL(snd_ctl_unregister_ioctl_compat);
#endif
@ -1702,6 +1719,16 @@ int snd_ctl_create(struct snd_card *card)
/*
* Frequently used control callbacks/helpers
*/
/**
* snd_ctl_boolean_mono_info - Helper function for a standard boolean info
* callback with a mono channel
* @kcontrol: the kcontrol instance
* @uinfo: info to store
*
* This is a function that can be used as info callback for a standard
* boolean control with a single mono channel.
*/
int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
@ -1711,9 +1738,17 @@ int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
uinfo->value.integer.max = 1;
return 0;
}
EXPORT_SYMBOL(snd_ctl_boolean_mono_info);
/**
* snd_ctl_boolean_stereo_info - Helper function for a standard boolean info
* callback with stereo two channels
* @kcontrol: the kcontrol instance
* @uinfo: info to store
*
* This is a function that can be used as info callback for a standard
* boolean control with stereo two channels.
*/
int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
@ -1723,7 +1758,6 @@ int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
uinfo->value.integer.max = 1;
return 0;
}
EXPORT_SYMBOL(snd_ctl_boolean_stereo_info);
/**