SND_LOOKUP_MINOR_DAT(9) Management of Cards and Device SND_LOOKUP_MINOR_DAT(9)
NAME
snd_lookup_minor_data - get user data of a registered device
SYNOPSIS
void * snd_lookup_minor_data(unsigned int minor, int type);
ARGUMENTS
minor
the minor number
type
device type (SNDRV_DEVICE_TYPE_XXX)
DESCRIPTION
Checks that a minor device with the specified type is registered, and returns its user data pointer.
This function increments the reference counter of the card instance if an associated instance with the given minor number and type is
found. The caller must call snd_card_unref appropriately later.
RETURN
The user data pointer if the specified device is found. NULL otherwise.
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 SND_LOOKUP_MINOR_DAT(9)
