1 files changed, 54 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/818-v6.5-05-leds-trigger-netdev-introduce-check-for-possible-hw-.patch b/target/linux/generic/backport-5.15/818-v6.5-05-leds-trigger-netdev-introduce-check-for-possible-hw-.patch
new file mode 100644
index 0000000000..284b519482
--- /dev/null
+++ b/target/linux/generic/backport-5.15/818-v6.5-05-leds-trigger-netdev-introduce-check-for-possible-hw-.patch
@@ -0,0 +1,54 @@
+From 4fd1b6d47a7a38e81fdc6f8be2ccd4216b3f93db Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Mon, 29 May 2023 18:32:35 +0200
+Subject: [PATCH 05/13] leds: trigger: netdev: introduce check for possible hw
+ control
+
+Introduce function to check if the requested mode can use hw control in
+preparation for hw control support. Currently everything is handled in
+software so can_hw_control will always return false.
+
+Add knob with the new value hw_control in trigger_data struct to
+set hw control possible. Useful for future implementation to implement
+in set_baseline_state() the required function to set the requested mode
+using LEDs hw control ops and in other function to reject set if hw
+control is currently active.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/leds/trigger/ledtrig-netdev.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/leds/trigger/ledtrig-netdev.c
++++ b/drivers/leds/trigger/ledtrig-netdev.c
+@@ -51,6 +51,7 @@ struct led_netdev_data {
+ 
+ 	unsigned long mode;
+ 	bool carrier_link_up;
++	bool hw_control;
+ };
+ 
+ enum led_trigger_netdev_modes {
+@@ -91,6 +92,11 @@ static void set_baseline_state(struct le
+ 	}
+ }
+ 
++static bool can_hw_control(struct led_netdev_data *trigger_data)
++{
++	return false;
++}
++
+ static ssize_t device_name_show(struct device *dev,
+ 				struct device_attribute *attr, char *buf)
+ {
+@@ -204,6 +210,8 @@ static ssize_t netdev_led_attr_store(str
+ 	else
+ 		clear_bit(bit, &trigger_data->mode);
+ 
++	trigger_data->hw_control = can_hw_control(trigger_data);
++
+ 	set_baseline_state(trigger_data);
+ 
+ 	return size;