gpio: pl061: hook request if gpio-ranges avaiable
gpio-ranges property could binds gpio to pinctrl. But there may be some
gpios without pinctrl operation. So check whether gpio-ranges property
exists in device node first.
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
diff --git a/drivers/gpio/gpio-pl061.c b/drivers/gpio/gpio-pl061.c
index 23f27fd..14febe9 100644
--- a/drivers/gpio/gpio-pl061.c
+++ b/drivers/gpio/gpio-pl061.c
@@ -301,8 +301,11 @@
spin_lock_init(&chip->lock);
- chip->gc.request = pl061_gpio_request;
- chip->gc.free = pl061_gpio_free;
+ /* Hook the request()/free() for pinctrl operation */
+ if (of_get_property(dev->of_node, "gpio-ranges", NULL)) {
+ chip->gc.request = pl061_gpio_request;
+ chip->gc.free = pl061_gpio_free;
+ }
chip->gc.direction_input = pl061_direction_input;
chip->gc.direction_output = pl061_direction_output;
chip->gc.get = pl061_get_value;
