target/linux/generic/pending-4.4/085-0001-leds-leds-gpio-Set-of_node-for-created-LED-devices.patch

   1 From bff23714bc36a1322d0f14519022df0d1a4b21f3 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   3 Date: Fri, 8 Jul 2016 14:53:38 +0200
   4 Subject: [PATCH] leds: leds-gpio: Set of_node for created LED devices
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 When working with Device Tree we iterate over children of "gpio-leds"
  10 compatible node and create LED device for each of them. We take care of
  11 all common DT properties (label, default trigger, state, etc.), however
  12 some triggers may want to support more of them.
  13
  14 It could be useful for timer trigger to support setting delay on/off
  15 values with Device Tree property. Or for transient trigger to support
  16 e.g. duration property.
  17
  18 We obviously should handle such properties in triggers, not in generic
  19 code. To let trigger drivers read properties from DT node we need to set
  20 of_node to point the relevant node. This change allows using all kind of
  21 of helpers in e.g. "activate" callbacks.
  22
  23 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  24 Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
  25 ---
  26  drivers/leds/leds-gpio.c | 5 +++--
  27  1 file changed, 3 insertions(+), 2 deletions(-)
  28
  29 --- a/drivers/leds/leds-gpio.c
  30 +++ b/drivers/leds/leds-gpio.c
  31 @@ -182,6 +182,7 @@ static struct gpio_leds_priv *gpio_leds_
  32                 return ERR_PTR(-ENOMEM);
  33
  34         device_for_each_child_node(dev, child) {
  35 +               struct gpio_led_data *led_dat = &priv->leds[priv->num_leds];
  36                 struct gpio_led led = {};
  37                 const char *state = NULL;
  38
  39 @@ -220,12 +221,12 @@ static struct gpio_leds_priv *gpio_leds_
  40                 if (fwnode_property_present(child, "retain-state-suspended"))
  41                         led.retain_state_suspended = 1;
  42
  43 -               ret = create_gpio_led(&led, &priv->leds[priv->num_leds],
  44 -                                     dev, NULL);
  45 +               ret = create_gpio_led(&led, led_dat, dev, NULL);
  46                 if (ret < 0) {
  47                         fwnode_handle_put(child);
  48                         goto err;
  49                 }
  50 +               led_dat->cdev.dev->of_node = np;
  51                 priv->num_leds++;
  52         }
  53