mute_led_state 44 drivers/hid/hid-elan.c u8 mute_led_state; mute_led_state 417 drivers/hid/hid-elan.c return drvdata->mute_led_state; mute_led_state 450 drivers/hid/hid-elan.c drvdata->mute_led_state = led_state;