apple_bl_unregister 701 drivers/platform/x86/apple-gmux.c apple_bl_unregister(); apple_bl_unregister 235 drivers/video/backlight/apple_bl.c EXPORT_SYMBOL_GPL(apple_bl_unregister); apple_bl_unregister 244 drivers/video/backlight/apple_bl.c apple_bl_unregister(); apple_bl_unregister 12 include/linux/apple_bl.h extern void apple_bl_unregister(void);