linux-kernel - [RFC PATCH v4 3/8] leds: trigger: netdev: drop NETDEV_LED_MODE

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Message-Id: <20211111013500.13882-4-ansuelsmth@gmail.com>
Date:   Thu, 11 Nov 2021 02:34:55 +0100
From:   Ansuel Smith <ansuelsmth@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Jonathan Corbet <corbet@....net>, Pavel Machek <pavel@....cz>,
        Ansuel Smith <ansuelsmth@...il.com>,
        John Crispin <john@...ozen.org>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-leds@...r.kernel.org,
        Marek Behún <kabel@...nel.org>
Subject: [RFC PATCH v4 3/8] leds: trigger: netdev: drop NETDEV_LED_MODE_LINKUP from mode

NETDEV_LED_MODE_LINKUP is not strictly a blink mode but really a status
of the current situation of the carrier. It seems wrong to accomunate a
link status to the blink mode list and would cause some confusion as
someone would think that MODE_LINKUP is a separate mode that provide the
netdev trigger with the other 3 LINK, RX and TX.

Drop NETDEV_LED_MODE_LINKUP from mode list and convert to a simple bool
that will be true or false based on the carrier link. No functional
change intended.

Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>
---
 drivers/leds/trigger/ledtrig-netdev.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/leds/trigger/ledtrig-netdev.c b/drivers/leds/trigger/ledtrig-netdev.c
index d5e774d83021..66a81cc9b64d 100644
--- a/drivers/leds/trigger/ledtrig-netdev.c
+++ b/drivers/leds/trigger/ledtrig-netdev.c
@@ -50,10 +50,10 @@ struct led_netdev_data {
 	unsigned int last_activity;
 
 	unsigned long mode;
+	bool carrier_link_up;
 #define NETDEV_LED_LINK	0
 #define NETDEV_LED_TX	1
 #define NETDEV_LED_RX	2
-#define NETDEV_LED_MODE_LINKUP	3
 };
 
 enum netdev_led_attr {
@@ -73,9 +73,9 @@ static void set_baseline_state(struct led_netdev_data *trigger_data)
 	if (!led_cdev->blink_brightness)
 		led_cdev->blink_brightness = led_cdev->max_brightness;
 
-	if (!test_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode))
+	if (!trigger_data->carrier_link_up) {
 		led_set_brightness(led_cdev, LED_OFF);
-	else {
+	} else {
 		if (test_bit(NETDEV_LED_LINK, &trigger_data->mode))
 			led_set_brightness(led_cdev,
 					   led_cdev->blink_brightness);
@@ -131,10 +131,9 @@ static ssize_t device_name_store(struct device *dev,
 		trigger_data->net_dev =
 		    dev_get_by_name(&init_net, trigger_data->device_name);
 
-	clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
+	trigger_data->carrier_link_up = false;
 	if (trigger_data->net_dev != NULL)
-		if (netif_carrier_ok(trigger_data->net_dev))
-			set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
+		trigger_data->carrier_link_up = netif_carrier_ok(trigger_data->net_dev);
 
 	trigger_data->last_activity = 0;
 
@@ -315,7 +314,7 @@ static int netdev_trig_notify(struct notifier_block *nb,
 
 	spin_lock_bh(&trigger_data->lock);
 
-	clear_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
+	trigger_data->carrier_link_up = false;
 	switch (evt) {
 	case NETDEV_CHANGENAME:
 	case NETDEV_REGISTER:
@@ -330,8 +329,7 @@ static int netdev_trig_notify(struct notifier_block *nb,
 		break;
 	case NETDEV_UP:
 	case NETDEV_CHANGE:
-		if (netif_carrier_ok(dev))
-			set_bit(NETDEV_LED_MODE_LINKUP, &trigger_data->mode);
+		trigger_data->carrier_link_up = netif_carrier_ok(dev);
 		break;
 	}
 
-- 
2.32.0