[PATCH] Notifier chain update: API changes

[mirror_ubuntu-bionic-kernel.git] / drivers / parisc / led.c

diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index 3627a2d7f79feb3b701dceba05312e8079cbe002..298f2ddb2c179693ed062b9b50f8740f7120770a 100644 (file)
--- a/drivers/parisc/led.c
+++ b/drivers/parisc/led.c
@@ -499,11 +499,16 @@ static int led_halt(struct notifier_block *, unsigned long, void *);
 static struct notifier_block led_notifier = {
        .notifier_call = led_halt,
 };
+static int notifier_disabled = 0;
 
 static int led_halt(struct notifier_block *nb, unsigned long event, void *buf) 
 {
        char *txt;
-       
+
+       if (notifier_disabled)
+               return NOTIFY_OK;
+
+       notifier_disabled = 1;
        switch (event) {
        case SYS_RESTART:       txt = "SYSTEM RESTART";
                                break;
@@ -527,7 +532,6 @@ static int led_halt(struct notifier_block *nb, unsigned long event, void *buf)
                if (led_func_ptr)
                        led_func_ptr(0xff); /* turn all LEDs ON */
        
-       unregister_reboot_notifier(&led_notifier);
        return NOTIFY_OK;
 }
 
@@ -758,6 +762,12 @@ not_found:
        return 1;
 }
 
+static void __exit led_exit(void)
+{
+       unregister_reboot_notifier(&led_notifier);
+       return;
+}
+
 #ifdef CONFIG_PROC_FS
 module_init(led_create_procfs)
 #endif