These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 170 insertions, 98 deletions

diff --git a/kernel/net/mac80211/led.c b/kernel/net/mac80211/led.c
index e2b836446..0505845b7 100644
--- a/kernel/net/mac80211/led.c
+++ b/kernel/net/mac80211/led.c
@@ -12,96 +12,175 @@
 #include <linux/export.h>
 #include "led.h"
 
-#define MAC80211_BLINK_DELAY 50 /* ms */
-
-void ieee80211_led_rx(struct ieee80211_local *local)
-{
-	unsigned long led_delay = MAC80211_BLINK_DELAY;
-	if (unlikely(!local->rx_led))
-		return;
-	led_trigger_blink_oneshot(local->rx_led, &led_delay, &led_delay, 0);
-}
-
-void ieee80211_led_tx(struct ieee80211_local *local)
-{
-	unsigned long led_delay = MAC80211_BLINK_DELAY;
-	if (unlikely(!local->tx_led))
-		return;
-	led_trigger_blink_oneshot(local->tx_led, &led_delay, &led_delay, 0);
-}
-
 void ieee80211_led_assoc(struct ieee80211_local *local, bool associated)
 {
-	if (unlikely(!local->assoc_led))
+	if (!atomic_read(&local->assoc_led_active))
 		return;
 	if (associated)
-		led_trigger_event(local->assoc_led, LED_FULL);
+		led_trigger_event(&local->assoc_led, LED_FULL);
 	else
-		led_trigger_event(local->assoc_led, LED_OFF);
+		led_trigger_event(&local->assoc_led, LED_OFF);
 }
 
 void ieee80211_led_radio(struct ieee80211_local *local, bool enabled)
 {
-	if (unlikely(!local->radio_led))
+	if (!atomic_read(&local->radio_led_active))
 		return;
 	if (enabled)
-		led_trigger_event(local->radio_led, LED_FULL);
+		led_trigger_event(&local->radio_led, LED_FULL);
 	else
-		led_trigger_event(local->radio_led, LED_OFF);
+		led_trigger_event(&local->radio_led, LED_OFF);
+}
+
+void ieee80211_alloc_led_names(struct ieee80211_local *local)
+{
+	local->rx_led.name = kasprintf(GFP_KERNEL, "%srx",
+				       wiphy_name(local->hw.wiphy));
+	local->tx_led.name = kasprintf(GFP_KERNEL, "%stx",
+				       wiphy_name(local->hw.wiphy));
+	local->assoc_led.name = kasprintf(GFP_KERNEL, "%sassoc",
+					  wiphy_name(local->hw.wiphy));
+	local->radio_led.name = kasprintf(GFP_KERNEL, "%sradio",
+					  wiphy_name(local->hw.wiphy));
+}
+
+void ieee80211_free_led_names(struct ieee80211_local *local)
+{
+	kfree(local->rx_led.name);
+	kfree(local->tx_led.name);
+	kfree(local->assoc_led.name);
+	kfree(local->radio_led.name);
+}
+
+static void ieee80211_tx_led_activate(struct led_classdev *led_cdev)
+{
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     tx_led);
+
+	atomic_inc(&local->tx_led_active);
+}
+
+static void ieee80211_tx_led_deactivate(struct led_classdev *led_cdev)
+{
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     tx_led);
+
+	atomic_dec(&local->tx_led_active);
+}
+
+static void ieee80211_rx_led_activate(struct led_classdev *led_cdev)
+{
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     rx_led);
+
+	atomic_inc(&local->rx_led_active);
+}
+
+static void ieee80211_rx_led_deactivate(struct led_classdev *led_cdev)
+{
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     rx_led);
+
+	atomic_dec(&local->rx_led_active);
+}
+
+static void ieee80211_assoc_led_activate(struct led_classdev *led_cdev)
+{
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     assoc_led);
+
+	atomic_inc(&local->assoc_led_active);
+}
+
+static void ieee80211_assoc_led_deactivate(struct led_classdev *led_cdev)
+{
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     assoc_led);
+
+	atomic_dec(&local->assoc_led_active);
+}
+
+static void ieee80211_radio_led_activate(struct led_classdev *led_cdev)
+{
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     radio_led);
+
+	atomic_inc(&local->radio_led_active);
+}
+
+static void ieee80211_radio_led_deactivate(struct led_classdev *led_cdev)
+{
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     radio_led);
+
+	atomic_dec(&local->radio_led_active);
+}
+
+static void ieee80211_tpt_led_activate(struct led_classdev *led_cdev)
+{
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     tpt_led);
+
+	atomic_inc(&local->tpt_led_active);
 }
 
-void ieee80211_led_names(struct ieee80211_local *local)
+static void ieee80211_tpt_led_deactivate(struct led_classdev *led_cdev)
 {
-	snprintf(local->rx_led_name, sizeof(local->rx_led_name),
-		 "%srx", wiphy_name(local->hw.wiphy));
-	snprintf(local->tx_led_name, sizeof(local->tx_led_name),
-		 "%stx", wiphy_name(local->hw.wiphy));
-	snprintf(local->assoc_led_name, sizeof(local->assoc_led_name),
-		 "%sassoc", wiphy_name(local->hw.wiphy));
-	snprintf(local->radio_led_name, sizeof(local->radio_led_name),
-		 "%sradio", wiphy_name(local->hw.wiphy));
+	struct ieee80211_local *local = container_of(led_cdev->trigger,
+						     struct ieee80211_local,
+						     tpt_led);
+
+	atomic_dec(&local->tpt_led_active);
 }
 
 void ieee80211_led_init(struct ieee80211_local *local)
 {
-	local->rx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
-	if (local->rx_led) {
-		local->rx_led->name = local->rx_led_name;
-		if (led_trigger_register(local->rx_led)) {
-			kfree(local->rx_led);
-			local->rx_led = NULL;
-		}
+	atomic_set(&local->rx_led_active, 0);
+	local->rx_led.activate = ieee80211_rx_led_activate;
+	local->rx_led.deactivate = ieee80211_rx_led_deactivate;
+	if (local->rx_led.name && led_trigger_register(&local->rx_led)) {
+		kfree(local->rx_led.name);
+		local->rx_led.name = NULL;
 	}
 
-	local->tx_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
-	if (local->tx_led) {
-		local->tx_led->name = local->tx_led_name;
-		if (led_trigger_register(local->tx_led)) {
-			kfree(local->tx_led);
-			local->tx_led = NULL;
-		}
+	atomic_set(&local->tx_led_active, 0);
+	local->tx_led.activate = ieee80211_tx_led_activate;
+	local->tx_led.deactivate = ieee80211_tx_led_deactivate;
+	if (local->tx_led.name && led_trigger_register(&local->tx_led)) {
+		kfree(local->tx_led.name);
+		local->tx_led.name = NULL;
 	}
 
-	local->assoc_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
-	if (local->assoc_led) {
-		local->assoc_led->name = local->assoc_led_name;
-		if (led_trigger_register(local->assoc_led)) {
-			kfree(local->assoc_led);
-			local->assoc_led = NULL;
-		}
+	atomic_set(&local->assoc_led_active, 0);
+	local->assoc_led.activate = ieee80211_assoc_led_activate;
+	local->assoc_led.deactivate = ieee80211_assoc_led_deactivate;
+	if (local->assoc_led.name && led_trigger_register(&local->assoc_led)) {
+		kfree(local->assoc_led.name);
+		local->assoc_led.name = NULL;
 	}
 
-	local->radio_led = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
-	if (local->radio_led) {
-		local->radio_led->name = local->radio_led_name;
-		if (led_trigger_register(local->radio_led)) {
-			kfree(local->radio_led);
-			local->radio_led = NULL;
-		}
+	atomic_set(&local->radio_led_active, 0);
+	local->radio_led.activate = ieee80211_radio_led_activate;
+	local->radio_led.deactivate = ieee80211_radio_led_deactivate;
+	if (local->radio_led.name && led_trigger_register(&local->radio_led)) {
+		kfree(local->radio_led.name);
+		local->radio_led.name = NULL;
 	}
 
+	atomic_set(&local->tpt_led_active, 0);
 	if (local->tpt_led_trigger) {
-		if (led_trigger_register(&local->tpt_led_trigger->trig)) {
+		local->tpt_led.activate = ieee80211_tpt_led_activate;
+		local->tpt_led.deactivate = ieee80211_tpt_led_deactivate;
+		if (led_trigger_register(&local->tpt_led)) {
 			kfree(local->tpt_led_trigger);
 			local->tpt_led_trigger = NULL;
 		}
@@ -110,58 +189,50 @@ void ieee80211_led_init(struct ieee80211_local *local)
 
 void ieee80211_led_exit(struct ieee80211_local *local)
 {
-	if (local->radio_led) {
-		led_trigger_unregister(local->radio_led);
-		kfree(local->radio_led);
-	}
-	if (local->assoc_led) {
-		led_trigger_unregister(local->assoc_led);
-		kfree(local->assoc_led);
-	}
-	if (local->tx_led) {
-		led_trigger_unregister(local->tx_led);
-		kfree(local->tx_led);
-	}
-	if (local->rx_led) {
-		led_trigger_unregister(local->rx_led);
-		kfree(local->rx_led);
-	}
+	if (local->radio_led.name)
+		led_trigger_unregister(&local->radio_led);
+	if (local->assoc_led.name)
+		led_trigger_unregister(&local->assoc_led);
+	if (local->tx_led.name)
+		led_trigger_unregister(&local->tx_led);
+	if (local->rx_led.name)
+		led_trigger_unregister(&local->rx_led);
 
 	if (local->tpt_led_trigger) {
-		led_trigger_unregister(&local->tpt_led_trigger->trig);
+		led_trigger_unregister(&local->tpt_led);
 		kfree(local->tpt_led_trigger);
 	}
 }
 
-char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
+const char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 
-	return local->radio_led_name;
+	return local->radio_led.name;
 }
 EXPORT_SYMBOL(__ieee80211_get_radio_led_name);
 
-char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
+const char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 
-	return local->assoc_led_name;
+	return local->assoc_led.name;
 }
 EXPORT_SYMBOL(__ieee80211_get_assoc_led_name);
 
-char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
+const char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 
-	return local->tx_led_name;
+	return local->tx_led.name;
 }
 EXPORT_SYMBOL(__ieee80211_get_tx_led_name);
 
-char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
+const char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 
-	return local->rx_led_name;
+	return local->rx_led.name;
 }
 EXPORT_SYMBOL(__ieee80211_get_rx_led_name);
 
@@ -205,16 +276,17 @@ static void tpt_trig_timer(unsigned long data)
 		}
 	}
 
-	read_lock(&tpt_trig->trig.leddev_list_lock);
-	list_for_each_entry(led_cdev, &tpt_trig->trig.led_cdevs, trig_list)
+	read_lock(&local->tpt_led.leddev_list_lock);
+	list_for_each_entry(led_cdev, &local->tpt_led.led_cdevs, trig_list)
 		led_blink_set(led_cdev, &on, &off);
-	read_unlock(&tpt_trig->trig.leddev_list_lock);
+	read_unlock(&local->tpt_led.leddev_list_lock);
 }
 
-char *__ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw,
-				unsigned int flags,
-				const struct ieee80211_tpt_blink *blink_table,
-				unsigned int blink_table_len)
+const char *
+__ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw,
+				   unsigned int flags,
+				   const struct ieee80211_tpt_blink *blink_table,
+				   unsigned int blink_table_len)
 {
 	struct ieee80211_local *local = hw_to_local(hw);
 	struct tpt_led_trigger *tpt_trig;
@@ -229,7 +301,7 @@ char *__ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw,
 	snprintf(tpt_trig->name, sizeof(tpt_trig->name),
 		 "%stpt", wiphy_name(local->hw.wiphy));
 
-	tpt_trig->trig.name = tpt_trig->name;
+	local->tpt_led.name = tpt_trig->name;
 
 	tpt_trig->blink_table = blink_table;
 	tpt_trig->blink_table_len = blink_table_len;
@@ -269,10 +341,10 @@ static void ieee80211_stop_tpt_led_trig(struct ieee80211_local *local)
 	tpt_trig->running = false;
 	del_timer_sync(&tpt_trig->timer);
 
-	read_lock(&tpt_trig->trig.leddev_list_lock);
-	list_for_each_entry(led_cdev, &tpt_trig->trig.led_cdevs, trig_list)
+	read_lock(&local->tpt_led.leddev_list_lock);
+	list_for_each_entry(led_cdev, &local->tpt_led.led_cdevs, trig_list)
 		led_set_brightness(led_cdev, LED_OFF);
-	read_unlock(&tpt_trig->trig.leddev_list_lock);
+	read_unlock(&local->tpt_led.leddev_list_lock);
 }
 
 void ieee80211_mod_tpt_led_trig(struct ieee80211_local *local,