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linux-mainline 3.2: shut down heartbeat LED on halt/reboot/panic

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Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
This commit is contained in:
Koen Kooi
2012-05-10 10:53:45 +02:00
committed by Denys Dmytriyenko
parent 0b2c5e6de9
commit 0be62d6c0d
2 changed files with 69 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
recipes-kernel/linux/linux-mainline-3.2/led/0001-leds-heartbeat-stop-on-shutdown-reboot-or-panic.patch
+67
View File
@@ -0,0 +1,67 @@
From d4369481800faa1ab93ab10c23626a5ce5fad5b5 Mon Sep 17 00:00:00 2001
From: Alexander Holler <hol...@ahsoftware.de>
Date: Wed, 25 Apr 2012 00:50:03 +0200
Subject: [PATCH] leds: heartbeat: stop on shutdown, reboot or panic
A halted kernel should not show a heartbeat.
Signed-off-by: Alexander Holler <hol...@ahsoftware.de>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
---
drivers/leds/ledtrig-heartbeat.c | 27 ++++++++++++++++++++++++++-
1 files changed, 26 insertions(+), 1 deletions(-)
diff --git a/drivers/leds/ledtrig-heartbeat.c b/drivers/leds/ledtrig-heartbeat.c
index 759c0bb..31c234c 100644
--- a/drivers/leds/ledtrig-heartbeat.c
+++ b/drivers/leds/ledtrig-heartbeat.c
@@ -18,6 +18,7 @@
#include <linux/timer.h>
#include <linux/sched.h>
#include <linux/leds.h>
+#include <linux/reboot.h>
#include "leds.h"
struct heartbeat_trig_data {
@@ -101,13 +102,37 @@ static struct led_trigger heartbeat_led_trigger = {
.deactivate = heartbeat_trig_deactivate,
};
+static int heartbeat_reboot_notifier(struct notifier_block *nb,
+ unsigned long code, void *unused)
+{
+ led_trigger_unregister(&heartbeat_led_trigger);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block heartbeat_reboot_nb = {
+ .notifier_call = heartbeat_reboot_notifier,
+};
+
+static struct notifier_block heartbeat_panic_nb = {
+ .notifier_call = heartbeat_reboot_notifier,
+};
+
static int __init heartbeat_trig_init(void)
{
- return led_trigger_register(&heartbeat_led_trigger);
+ int rc = led_trigger_register(&heartbeat_led_trigger);
+ if (!rc) {
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &heartbeat_panic_nb);
+ register_reboot_notifier(&heartbeat_reboot_nb);
+ }
+ return rc;
}
static void __exit heartbeat_trig_exit(void)
{
+ unregister_reboot_notifier(&heartbeat_reboot_nb);
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &heartbeat_panic_nb);
led_trigger_unregister(&heartbeat_led_trigger);
}
--
1.7.7.4