[PATCH 3/3] gpiolib: add gpio_device_get_label() stub for !GPIOLIB

[Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>]

Add empty stub of gpio_device_get_label() when GPIOLIB is not enabled.

Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: d1f7728259ef ("gpiolib: provide gpio_device_get_label()")
Suggested-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>

---

Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>

Reset framework will need it:
https://lore.kernel.org/oe-kbuild-all/202401250958.YksQmnWj-lkp@xxxxxxxxx/
---
 include/linux/gpio/driver.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index c1df7698edb0..7f75c9a51874 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -831,6 +831,12 @@ static inline int gpio_device_get_base(struct gpio_device *gdev)
 	return -ENODEV;
 }
 
+static inline const char *gpio_device_get_label(struct gpio_device *gdev)
+{
+	WARN_ON(1);
+	return NULL;
+}
+
 static inline int gpiochip_lock_as_irq(struct gpio_chip *gc,
 				       unsigned int offset)
 {
-- 
2.34.1