diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index a5495ad31c9c..c2523ac26fac 100644
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -108,7 +108,7 @@ static int acpi_gpiochip_find(struct gpio_chip *gc, void *data)
  * controller does not have GPIO chip registered at the moment. This is to
  * support probe deferral.
  */
-static struct gpio_desc *acpi_get_gpiod(char *path, int pin)
+static struct gpio_desc *acpi_get_gpiod(char *path, unsigned int pin)
 {
 	struct gpio_chip *chip;
 	acpi_handle handle;
@@ -136,7 +136,7 @@ static struct gpio_desc *acpi_get_gpiod(char *path, int pin)
  * as it is intended for use outside of the GPIO layer (in a similar fashion to
  * gpiod_get_index() for example) it also holds a reference to the GPIO device.
  */
-struct gpio_desc *acpi_get_and_request_gpiod(char *path, int pin, char *label)
+struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin, char *label)
 {
 	struct gpio_desc *gpio;
 	int ret;
@@ -317,11 +317,12 @@ static struct gpio_desc *acpi_request_own_gpiod(struct gpio_chip *chip,
 	return desc;
 }
 
-static bool acpi_gpio_in_ignore_list(const char *controller_in, int pin_in)
+static bool acpi_gpio_in_ignore_list(const char *controller_in, unsigned int pin_in)
 {
 	const char *controller, *pin_str;
-	int len, pin;
+	unsigned int pin;
 	char *endp;
+	int len;
 
 	controller = ignore_wake;
 	while (controller) {
@@ -354,13 +355,13 @@ err:
 static bool acpi_gpio_irq_is_wake(struct device *parent,
 				  struct acpi_resource_gpio *agpio)
 {
-	int pin = agpio->pin_table[0];
+	unsigned int pin = agpio->pin_table[0];
 
 	if (agpio->wake_capable != ACPI_WAKE_CAPABLE)
 		return false;
 
 	if (acpi_gpio_in_ignore_list(dev_name(parent), pin)) {
-		dev_info(parent, "Ignoring wakeup on pin %d\n", pin);
+		dev_info(parent, "Ignoring wakeup on pin %u\n", pin);
 		return false;
 	}
 
@@ -378,7 +379,8 @@ static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares,
 	struct acpi_gpio_event *event;
 	irq_handler_t handler = NULL;
 	struct gpio_desc *desc;
-	int ret, pin, irq;
+	unsigned int pin;
+	int ret, irq;
 
 	if (!acpi_gpio_get_irq_resource(ares, &agpio))
 		return AE_OK;
@@ -387,8 +389,8 @@ static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares,
 	pin = agpio->pin_table[0];
 
 	if (pin <= 255) {
-		char ev_name[5];
-		sprintf(ev_name, "_%c%02hhX",
+		char ev_name[8];
+		sprintf(ev_name, "_%c%02X",
 			agpio->triggering == ACPI_EDGE_SENSITIVE ? 'E' : 'L',
 			pin);
 		if (ACPI_SUCCESS(acpi_get_handle(handle, ev_name, &evt_handle)))
@@ -1098,7 +1100,7 @@ acpi_gpio_adr_space_handler(u32 function, acpi_physical_address address,
 
 	length = min_t(u16, agpio->pin_table_length, pin_index + bits);
 	for (i = pin_index; i < length; ++i) {
-		int pin = agpio->pin_table[i];
+		unsigned int pin = agpio->pin_table[i];
 		struct acpi_gpio_connection *conn;
 		struct gpio_desc *desc;
 		bool found;
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index c3aa8b330e1c..e71f6e1bfafe 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -688,7 +688,7 @@ void acpi_dev_remove_driver_gpios(struct acpi_device *adev);
 int devm_acpi_dev_add_driver_gpios(struct device *dev,
 				   const struct acpi_gpio_mapping *gpios);
 
-struct gpio_desc *acpi_get_and_request_gpiod(char *path, int pin, char *label);
+struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin, char *label);
 
 #else  /* CONFIG_GPIOLIB && CONFIG_ACPI */
 
@@ -705,6 +705,12 @@ static inline int devm_acpi_dev_add_driver_gpios(struct device *dev,
 	return -ENXIO;
 }
 
+static inline struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin,
+							   char *label)
+{
+	return ERR_PTR(-ENOSYS);
+}
+
 #endif /* CONFIG_GPIOLIB && CONFIG_ACPI */