linux-kernel - [RFC][PATCH v2 17/31] timers: leds: Use del_timer

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Date:   Thu, 27 Oct 2022 11:05:42 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Pavel Machek <pavel@....cz>, linux-leds@...r.kernel.org
Subject: [RFC][PATCH v2 17/31] timers: leds: Use del_timer_shutdown() before freeing timer

From: "Steven Rostedt (Google)" <rostedt@...dmis.org>

Before a timer is freed, del_timer_shutdown() must be called.

Link: https://lore.kernel.org/all/20220407161745.7d6754b3@gandalf.local.home/

Cc: Pavel Machek <pavel@....cz>
Cc: linux-leds@...r.kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 drivers/leds/trigger/ledtrig-activity.c  | 2 +-
 drivers/leds/trigger/ledtrig-heartbeat.c | 2 +-
 drivers/leds/trigger/ledtrig-pattern.c   | 2 +-
 drivers/leds/trigger/ledtrig-transient.c | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/leds/trigger/ledtrig-activity.c b/drivers/leds/trigger/ledtrig-activity.c
index 30bc9df03636..dc2c7b5ef67e 100644
--- a/drivers/leds/trigger/ledtrig-activity.c
+++ b/drivers/leds/trigger/ledtrig-activity.c
@@ -208,7 +208,7 @@ static void activity_deactivate(struct led_classdev *led_cdev)
 {
 	struct activity_data *activity_data = led_get_trigger_data(led_cdev);
 
-	del_timer_sync(&activity_data->timer);
+	del_timer_shutdown(&activity_data->timer);
 	kfree(activity_data);
 	clear_bit(LED_BLINK_SW, &led_cdev->work_flags);
 }
diff --git a/drivers/leds/trigger/ledtrig-heartbeat.c b/drivers/leds/trigger/ledtrig-heartbeat.c
index 7fe0a05574d2..7c46457f31a1 100644
--- a/drivers/leds/trigger/ledtrig-heartbeat.c
+++ b/drivers/leds/trigger/ledtrig-heartbeat.c
@@ -151,7 +151,7 @@ static void heartbeat_trig_deactivate(struct led_classdev *led_cdev)
 	struct heartbeat_trig_data *heartbeat_data =
 		led_get_trigger_data(led_cdev);
 
-	del_timer_sync(&heartbeat_data->timer);
+	del_timer_shutdown(&heartbeat_data->timer);
 	kfree(heartbeat_data);
 	clear_bit(LED_BLINK_SW, &led_cdev->work_flags);
 }
diff --git a/drivers/leds/trigger/ledtrig-pattern.c b/drivers/leds/trigger/ledtrig-pattern.c
index 43a265dc4696..f50da27fea47 100644
--- a/drivers/leds/trigger/ledtrig-pattern.c
+++ b/drivers/leds/trigger/ledtrig-pattern.c
@@ -430,7 +430,7 @@ static void pattern_trig_deactivate(struct led_classdev *led_cdev)
 	if (led_cdev->pattern_clear)
 		led_cdev->pattern_clear(led_cdev);
 
-	del_timer_sync(&data->timer);
+	del_timer_shutdown(&data->timer);
 
 	led_set_brightness(led_cdev, LED_OFF);
 	kfree(data);
diff --git a/drivers/leds/trigger/ledtrig-transient.c b/drivers/leds/trigger/ledtrig-transient.c
index 80635183fac8..1f28f13b1764 100644
--- a/drivers/leds/trigger/ledtrig-transient.c
+++ b/drivers/leds/trigger/ledtrig-transient.c
@@ -180,7 +180,7 @@ static void transient_trig_deactivate(struct led_classdev *led_cdev)
 {
 	struct transient_trig_data *transient_data = led_get_trigger_data(led_cdev);
 
-	del_timer_sync(&transient_data->timer);
+	del_timer_shutdown(&transient_data->timer);
 	led_set_brightness_nosleep(led_cdev, transient_data->restore_state);
 	kfree(transient_data);
 }
-- 
2.35.1