Provided by:
kernel-doc-2.4.27_2.4.27-12_all 
NAME
register_sound_dsp - register a DSP device
SYNOPSIS
int register_sound_dsp (struct file_operations *fops, int dev);
ARGUMENTS
fops File operations for the driver
dev Unit number to allocate
DESCRIPTION
Allocate a DSP device. Unit is the number of the DSP requested. Pass
-1 to request the next free DSP unit. On success the allocated number
is returned, on failure a negative error code is returned.
This function allocates both the audio and dsp device entries together
and will always allocate them as a matching pair - eg dsp3/audio3