The emu10k1 driver delivered with the kernel loads correctly. But after
recompiling the kernel and modules this driver no longer loads. It
complains of missing symbols such as kfree.
I investigated and found that the file audio.o had been compiled during the
compilation of the kernel and thus was not compiled with -DMODULE. After
recompiling this file with -DMODULE, re-linking emu10k1.o and placing it in
/lib/modules the sound driver then loads correctly.
I guess a makefile involved in the building of modules needs correcting.
*** This bug has been marked as a duplicate of 10475 ***