[elblinho@elblinho ~]$ ls -l /sys/module/snd/holders
total 0
lrwxrwxrwx 1 root root 0 30 mars  19:14 snd_hda_codec -> ../../snd_hda_codec
lrwxrwxrwx 1 root root 0 30 mars  19:14 snd_hda_intel -> ../../snd_hda_intel
lrwxrwxrwx 1 root root 0 30 mars  19:14 snd_hwdep -> ../../snd_hwdep
lrwxrwxrwx 1 root root 0 30 mars  19:14 snd_pcm -> ../../snd_pcm
lrwxrwxrwx 1 root root 0 30 mars  19:14 snd_rawmidi -> ../../snd_rawmidi
lrwxrwxrwx 1 root root 0 30 mars  19:14 snd_seq_device -> ../../snd_seq_device
lrwxrwxrwx 1 root root 0 30 mars  19:14 snd_timer -> ../../snd_timer
lrwxrwxrwx 1 root root 0 30 mars  19:14 snd_usb_audio -> ../../snd_usb_audio
lrwxrwxrwx 1 root root 0 30 mars  19:14 snd_usbmidi_lib -> ../../snd_usbmidi_lib