snd_ctl_activate_id
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Name

snd_ctl_activate_id — activate/inactivate the control of the given id

Synopsis

int snd_ctl_activate_id (struct snd_card * card,
 struct snd_ctl_elem_id * id,
 int active);
 

Arguments

card

the card instance

id

the control id to activate/inactivate

active

non-zero to activate

Description

Finds the control instance with the given id, and activate or inactivate the control together with notification, if changed.

Return

0 if unchanged, 1 if changed, or a negative error code on failure.

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