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 4.8.                 January 2017                   SND_LOOKUP_MINOR_DAT(9)