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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