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SND_CTL_FIND_NUMID(9) | Control/Mixer API | SND_CTL_FIND_NUMID(9) |
NAME¶
snd_ctl_find_numid - find the control instance with the given number-idSYNOPSIS¶
struct snd_kcontrol *
snd_ctl_find_numid(struct snd_card * card,
unsigned int numid);
ARGUMENTS¶
cardthe card instance
numid
the number-id to search
DESCRIPTION¶
Finds the control instance with the given number-id from the card. The caller must down card->controls_rwsem before calling this function (if the race condition can happen).RETURN¶
The pointer of the instance if found, or NULL if not.COPYRIGHT¶
May 2018 | Kernel Hackers Manual 4.9. |