[PATCH] pinctrl: core: comment that pinctrl_add_gpio_range() is deprecated

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

The pinctrl_add_gpio_range() function is deprecated add a comment so
people don't accidentally use it in new code.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 drivers/pinctrl/core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index ee56856cb80c..2d4412795ea4 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -412,6 +412,10 @@ static int pinctrl_get_device_gpio_range(struct gpio_chip *gc,
  * @pctldev: pin controller device to add the range to
  * @range: the GPIO range to add
  *
+ * DEPRECATED: Don't use this function in new code.  See section 2 of
+ * Documentation/devicetree/bindings/gpio/gpio.txt on how to bind pinctrl and
+ * gpio drivers.
+ *
  * This adds a range of GPIOs to be handled by a certain pin controller. Call
  * this to register handled ranges after registering your pin controller.
  */
-- 
2.43.0