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authorLinus Torvalds <torvalds@linux-foundation.org>2012-07-05 13:09:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-05 13:09:37 -0700
commit24eee627eb7b05ac3cbca240f36b615969e65775 (patch)
treed9c9bef83de3374d6dae335401ccf38aa14c99e4
parent5eecb9cc9029aef3c308fc94149c4a3065d40d9a (diff)
parentfb31fbeb647ed1910290712c13f11f1db09e5506 (diff)
Merge branch 'fixes-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
Pull leds fix from Bryan Wu: "Fix for heartbeat led trigger driver" * 'fixes-for-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: leds: heartbeat: fix bug on panic
-rw-r--r--drivers/leds/ledtrig-heartbeat.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/leds/ledtrig-heartbeat.c b/drivers/leds/ledtrig-heartbeat.c
index 41dc76db4311..a019fbb70880 100644
--- a/drivers/leds/ledtrig-heartbeat.c
+++ b/drivers/leds/ledtrig-heartbeat.c
@@ -21,6 +21,8 @@
#include <linux/reboot.h>
#include "leds.h"
+static int panic_heartbeats;
+
struct heartbeat_trig_data {
unsigned int phase;
unsigned int period;
@@ -34,6 +36,11 @@ static void led_heartbeat_function(unsigned long data)
unsigned long brightness = LED_OFF;
unsigned long delay = 0;
+ if (unlikely(panic_heartbeats)) {
+ led_set_brightness(led_cdev, LED_OFF);
+ return;
+ }
+
/* acts like an actual heart beat -- ie thump-thump-pause... */
switch (heartbeat_data->phase) {
case 0:
@@ -111,12 +118,19 @@ static int heartbeat_reboot_notifier(struct notifier_block *nb,
return NOTIFY_DONE;
}
+static int heartbeat_panic_notifier(struct notifier_block *nb,
+ unsigned long code, void *unused)
+{
+ panic_heartbeats = 1;
+ 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,
+ .notifier_call = heartbeat_panic_notifier,
};
static int __init heartbeat_trig_init(void)