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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. |