snd_lookup_minor_data (9) - Linux Manuals

snd_lookup_minor_data: get user data of a registered device

Command to display snd_lookup_minor_data manual in Linux: $ man 9 snd_lookup_minor_data

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.