gpiochip_line_is_open_drain
if (!gpiochip_line_is_open_drain(gc, offset)) {
if (!gpiochip_line_is_open_drain(gc, offset)) {
EXPORT_SYMBOL_GPL(gpiochip_line_is_open_drain);
bool gpiochip_line_is_open_drain(struct gpio_chip *gc, unsigned int offset);