snd_ctl_notify (9) Linux Manual Page
snd_ctl_notify – Send notification to user-space for a control change
Synopsis
void snd_ctl_notify(struct snd_card *card, unsigned int mask, struct snd_ctl_elem_id *id);Arguments
card
-
- the card to send notification
mask
- the event mask, SNDRV_CTL_EVENT_*
id
- the ctl element id to send notification
Description
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.