.TH "register_sound_mixer" 9 "register_sound_mixer" "25 May 1998" "Kernel Hacker's Manual" LINUX .SH NAME register_sound_mixer \- register a mixer device .SH SYNOPSIS .B "int" register_sound_mixer .BI "(struct file_operations *" fops "," .BI "int " dev ");" .SH ARGUMENTS .IP "fops" 12 File operations for the driver .IP "dev" 12 Unit number to allocate .SH "DESCRIPTION" Allocate a mixer device. Unit is the number of the mixer requested. Pass -1 to request the next free mixer unit. On success the allocated number is returned, on failure a negative error code is returned.