diff options
Diffstat (limited to 'drivers/leds/ledtrig-heartbeat.c')
| -rw-r--r-- | drivers/leds/ledtrig-heartbeat.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/leds/ledtrig-heartbeat.c b/drivers/leds/ledtrig-heartbeat.c index 41dc76db431..1edc7463ce8 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: @@ -67,7 +74,7 @@ static void led_heartbeat_function(unsigned long data) break; } - led_set_brightness(led_cdev, brightness); + __led_set_brightness(led_cdev, brightness); mod_timer(&heartbeat_data->timer, jiffies + delay); } @@ -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) |