210 	struct backlight_device *backlight;  member
374 			if (device->backlight)  in acpi_video_device_lcd_set_level()
375 				device->backlight->props.brightness = state - 2;  in acpi_video_device_lcd_set_level()
1320 	if (!device->backlight)  in acpi_video_switch_brightness()
1337 		backlight_force_update(device->backlight,  in acpi_video_switch_brightness()
1657 	device->backlight = backlight_device_register(name,  in acpi_video_dev_register_backlight()
1663 	if (IS_ERR(device->backlight)) {  in acpi_video_dev_register_backlight()
1664 		device->backlight = NULL;  in acpi_video_dev_register_backlight()
1672 	device->backlight->props.brightness =  in acpi_video_dev_register_backlight()
1673 			acpi_video_get_brightness(device->backlight);  in acpi_video_dev_register_backlight()
1758 	if (device->backlight) {  in acpi_video_dev_unregister_backlight()
1759 		backlight_device_unregister(device->backlight);  in acpi_video_dev_unregister_backlight()
1760 		device->backlight = NULL;  in acpi_video_dev_unregister_backlight()