ibm_backlight_device 6645 drivers/platform/x86/thinkpad_acpi.c static struct backlight_device *ibm_backlight_device; ibm_backlight_device 6836 drivers/platform/x86/thinkpad_acpi.c backlight_force_update(ibm_backlight_device, ibm_backlight_device 7038 drivers/platform/x86/thinkpad_acpi.c ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, ibm_backlight_device 7042 drivers/platform/x86/thinkpad_acpi.c if (IS_ERR(ibm_backlight_device)) { ibm_backlight_device 7043 drivers/platform/x86/thinkpad_acpi.c int rc = PTR_ERR(ibm_backlight_device); ibm_backlight_device 7044 drivers/platform/x86/thinkpad_acpi.c ibm_backlight_device = NULL; ibm_backlight_device 7062 drivers/platform/x86/thinkpad_acpi.c backlight_update_status(ibm_backlight_device); ibm_backlight_device 7084 drivers/platform/x86/thinkpad_acpi.c if (ibm_backlight_device) { ibm_backlight_device 7087 drivers/platform/x86/thinkpad_acpi.c backlight_device_unregister(ibm_backlight_device); ibm_backlight_device 7142 drivers/platform/x86/thinkpad_acpi.c if (!rc && ibm_backlight_device) ibm_backlight_device 7143 drivers/platform/x86/thinkpad_acpi.c backlight_force_update(ibm_backlight_device, ibm_backlight_device 9829 drivers/platform/x86/thinkpad_acpi.c if (ibm_backlight_device) {