2.4.21pre6 - devfs+alsa: could not append to parent, err: -17

On bootup I get:

devfs_register(audio): could not append to parent, err: -17 devfs_register(unknown): could not append to parent, err: -17 devfs_register(unknown): could not append to parent, err: -17
ALSA ../../../alsa-kernel/core/seq/oss/seq_oss.c:223: can't register device seq

However the sound devices are there and work fine (emu10k1 and via82xx sound cards are in the machine).

No Idea what is causing this...

Soeren.