leds: leds-gpio: Set of_node for created LED devices

When working with Device Tree we iterate over children of "gpio-leds"
compatible node and create LED device for each of them. We take care of
all common DT properties (label, default trigger, state, etc.), however
some triggers may want to support more of them.

It could be useful for timer trigger to support setting delay on/off
values with Device Tree property. Or for transient trigger to support
e.g. duration property.

We obviously should handle such properties in triggers, not in generic
code. To let trigger drivers read properties from DT node we need to set
of_node to point the relevant node. This change allows using all kind of
of helpers in e.g. "activate" callbacks.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>

diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 8229f063b483c77cf993891cb2bc2e7e9239ee6a..9b991d46ed848a0de40185eef30d9691c7e07e88 100644 (file)
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -165,6 +165,7 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
                return ERR_PTR(-ENOMEM);
 
        device_for_each_child_node(dev, child) {
+               struct gpio_led_data *led_dat = &priv->leds[priv->num_leds];
                struct gpio_led led = {};
                const char *state = NULL;
 
@@ -205,12 +206,12 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
                if (fwnode_property_present(child, "panic-indicator"))
                        led.panic_indicator = 1;
 
-               ret = create_gpio_led(&led, &priv->leds[priv->num_leds],
-                                     dev, NULL);
+               ret = create_gpio_led(&led, led_dat, dev, NULL);
                if (ret < 0) {
                        fwnode_handle_put(child);
                        goto err;
                }
+               led_dat->cdev.dev->of_node = np;
                priv->num_leds++;
        }