FUNC_BACKLIGHT 257 drivers/platform/x86/fujitsu-laptop.c call_fext_func(fext, FUNC_BACKLIGHT, 0x1, FUNC_BACKLIGHT 260 drivers/platform/x86/fujitsu-laptop.c call_fext_func(fext, FUNC_BACKLIGHT, 0x1, FUNC_BACKLIGHT 823 drivers/platform/x86/fujitsu-laptop.c if (call_fext_func(fext, FUNC_BACKLIGHT, 0x2,