# \[PATCH 09/21\] gpio: Probe pinctrl devices on demand

- From: Tomeu Vizoso \<hidden\>
- Date: 2015-05-25 15:04:34 
- List: linux-arm-kernel
- Page: https://ratatoskr.run/linux-arm-kernel/2015/05/4501595
- Thread: https://ratatoskr.run/linux-arm-kernel/2015/05/4501586/t.md

```text
Ensure that the device corresponding to the DT node of the pin
controller has been registered.

Signed-off-by: Tomeu Vizoso <redacted>
---
 drivers/gpio/gpiolib-of.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 190183d..e26e105 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -362,6 +362,8 @@ static void of_gpiochip_add_pin_range(struct gpio_chip *chip)
 		if (ret)
 			break;
 
+		of_platform_device_ensure(pinspec.np);
+
 		pctldev = of_pinctrl_get(pinspec.np);
 		if (!pctldev)
 			break;
-- 
2.4.1
```