channel0 1447 arch/um/drivers/ubd_kern.c volume.channel0 = 255; channel0 3153 drivers/cdrom/cdrom.c volctrl.channel0 = buffer[offset+9]; channel0 3169 drivers/cdrom/cdrom.c buffer[offset + 9] = volctrl.channel0 & mask[offset + 9]; channel0 199 include/uapi/linux/cdrom.h __u8 channel0;