target/linux/generic/backport-6.1/804-v6.5-10-leds-trigger-netdev-init-mode-if-hw-control-already-.patch

   1 From 0316cc5629d15880dd3f097d221c55ca648bcd61 Mon Sep 17 00:00:00 2001
   2 From: Christian Marangi <ansuelsmth@gmail.com>
   3 Date: Mon, 29 May 2023 18:32:40 +0200
   4 Subject: [PATCH 10/13] leds: trigger: netdev: init mode if hw control already
   5  active
   6
   7 On netdev trigger activation, hw control may be already active by
   8 default. If this is the case and a device is actually provided by
   9 hw_control_get_device(), init the already active mode and set the
  10 bool to hw_control bool to true to reflect the already set mode in the
  11 trigger_data.
  12
  13 Co-developed-by: Andrew Lunn <andrew@lunn.ch>
  14 Signed-off-by: Andrew Lunn <andrew@lunn.ch>
  15 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
  16 Signed-off-by: David S. Miller <davem@davemloft.net>
  17 ---
  18  drivers/leds/trigger/ledtrig-netdev.c | 17 +++++++++++++++++
  19  1 file changed, 17 insertions(+)
  20
  21 --- a/drivers/leds/trigger/ledtrig-netdev.c
  22 +++ b/drivers/leds/trigger/ledtrig-netdev.c
  23 @@ -454,6 +454,8 @@ static void netdev_trig_work(struct work
  24  static int netdev_trig_activate(struct led_classdev *led_cdev)
  25  {
  26         struct led_netdev_data *trigger_data;
  27 +       unsigned long mode;
  28 +       struct device *dev;
  29         int rc;
  30
  31         trigger_data = kzalloc(sizeof(struct led_netdev_data), GFP_KERNEL);
  32 @@ -475,6 +477,21 @@ static int netdev_trig_activate(struct l
  33         atomic_set(&trigger_data->interval, msecs_to_jiffies(NETDEV_LED_DEFAULT_INTERVAL));
  34         trigger_data->last_activity = 0;
  35
  36 +       /* Check if hw control is active by default on the LED.
  37 +        * Init already enabled mode in hw control.
  38 +        */
  39 +       if (supports_hw_control(led_cdev) &&
  40 +           !led_cdev->hw_control_get(led_cdev, &mode)) {
  41 +               dev = led_cdev->hw_control_get_device(led_cdev);
  42 +               if (dev) {
  43 +                       const char *name = dev_name(dev);
  44 +
  45 +                       set_device_name(trigger_data, name, strlen(name));
  46 +                       trigger_data->hw_control = true;
  47 +                       trigger_data->mode = mode;
  48 +               }
  49 +       }
  50 +
  51         led_set_trigger_data(led_cdev, trigger_data);
  52
  53         rc = register_netdevice_notifier(&trigger_data->notifier);