LEFT_CHANNEL     1043 scsi/cd.c      		error = cd_setchan(cd, LEFT_CHANNEL, RIGHT_CHANNEL,
LEFT_CHANNEL     1053 scsi/cd.c      		error = cd_setchan(cd, LEFT_CHANNEL, LEFT_CHANNEL, MUTE_CHANNEL,
LEFT_CHANNEL      252 scsi/cd.h      #define BOTH_CHANNEL    LEFT_CHANNEL | RIGHT_CHANNEL