2.5.12 -- ALSA build error "sound/sound.o: In function

[Miles Lane]

sound/sound.o: In function `snd_pcm_period_elapsed':
sound/sound.o(.text+0x1b62a): undefined reference to
`snd_timer_interrupt'
sound/sound.o: In function `snd_pcm_timer_init':
sound/sound.o(.text+0x1ccaa): undefined reference to `snd_timer_new'
make: *** [vmlinux] Error 1

CONFIG_SOUND=y

#
# Advanced Linux Sound Architecture
#
CONFIG_SND=y
CONFIG_SND_SEQUENCER=m
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=y
CONFIG_SND_PCM_OSS=y
CONFIG_SND_VERBOSE_PRINTK=y
CONFIG_SND_DEBUG=y
CONFIG_SND_DEBUG_MEMORY=y
CONFIG_SND_DEBUG_DETECT=y
CONFIG_SND_VIRMIDI=m
CONFIG_SND_EMU10K1=m