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snd_ctl_activate_id(9) - phpMan

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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
Kernel Hackers Manual 4.8.                 January 2017                    SND_CTL_ACTIVATE_ID(9)


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