shutdown_gpio 21 net/rfkill/rfkill-gpio.c struct gpio_desc *shutdown_gpio; shutdown_gpio 36 net/rfkill/rfkill-gpio.c gpiod_set_value_cansleep(rfkill->shutdown_gpio, !blocked); shutdown_gpio 111 net/rfkill/rfkill-gpio.c rfkill->shutdown_gpio = gpio; shutdown_gpio 114 net/rfkill/rfkill-gpio.c if (!rfkill->reset_gpio && !rfkill->shutdown_gpio) {