1SND_CTL_NOTIFY(9) Control/Mixer API SND_CTL_NOTIFY(9)
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6 snd_ctl_notify - Send notification to user-space for a control change
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9 void snd_ctl_notify(struct snd_card * card, unsigned int mask,
10 struct snd_ctl_elem_id * id);
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13 card
14 the card to send notification
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16 mask
17 the event mask, SNDRV_CTL_EVENT_*
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19 id
20 the ctl element id to send notification
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23 This function adds an event record with the given id and mask, appends
24 to the list and wakes up the user-space for notification. This can be
25 called in the atomic context.
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28Kernel Hackers Manual 2.6. June 2019 SND_CTL_NOTIFY(9)