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SND_CTL_ACTIVATE_ID(9) Control/Mixer API SND_CTL_ACTIVATE_ID(9)

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. The given ID data is filled with full information.

RETURN

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

COPYRIGHT

January 2017 Kernel Hackers Manual 4.8.