serial: sc16is7xx: use new GPIO line value setter callbacks

struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.

Signed-off-by: Bartosz Golaszewski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Bartosz Golaszewski

drivers/tty/serial/sc16is7xx.c

@@ -1333,13 +1333,16 @@ static int sc16is7xx_gpio_get(struct gpio_chip *chip, unsigned offset)
 	return !!(val & BIT(offset));
 }
 
-static void sc16is7xx_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
+static int sc16is7xx_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			      int val)
 {
 	struct sc16is7xx_port *s = gpiochip_get_data(chip);
 	struct uart_port *port = &s->p[0].port;
 
 	sc16is7xx_port_update(port, SC16IS7XX_IOSTATE_REG, BIT(offset),
 			      val ? BIT(offset) : 0);
+
+	return 0;
 }
 
 static int sc16is7xx_gpio_direction_input(struct gpio_chip *chip,
@@ -1422,7 +1425,7 @@ static int sc16is7xx_setup_gpio_chip(struct sc16is7xx_port *s)
 	s->gpio.direction_input	 = sc16is7xx_gpio_direction_input;
 	s->gpio.get		 = sc16is7xx_gpio_get;
 	s->gpio.direction_output = sc16is7xx_gpio_direction_output;
-	s->gpio.set		 = sc16is7xx_gpio_set;
+	s->gpio.set_rv		 = sc16is7xx_gpio_set;
 	s->gpio.base		 = -1;
 	s->gpio.ngpio		 = s->devtype->nr_gpio;
 	s->gpio.can_sleep	 = 1;