[WATCHDOG] advantechwdt.c - convert to platform_device part 2

Convert the reboot_notifier into the platform_device's shutdown
method

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 9 insertions, 37 deletions

diff --git a/drivers/char/watchdog/advantechwdt.c b/drivers/char/watchdog/advantechwdt.c
index 528a417856c4..8121cc247343 100644
--- a/drivers/char/watchdog/advantechwdt.c
+++ b/drivers/char/watchdog/advantechwdt.c
@@ -35,8 +35,6 @@
 #include <linux/watchdog.h>
 #include <linux/fs.h>
 #include <linux/ioport.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
 #include <linux/platform_device.h>
 #include <linux/init.h>
 
@@ -225,21 +223,6 @@ advwdt_close(struct inode *inode, struct file *file)
 }
 
 /*
- *      Notifier for system down
- */
-
-static int
-advwdt_notify_sys(struct notifier_block *this, unsigned long code,
-        void *unused)
-{
-        if (code == SYS_DOWN || code == SYS_HALT) {
-                /* Turn the WDT off */
-                advwdt_disable();
-        }
-        return NOTIFY_DONE;
-}
-
-/*
  *      Kernel Interfaces
  */
 
@@ -259,15 +242,6 @@ static struct miscdevice advwdt_miscdev = {
 };
 
 /*
- *      The WDT needs to learn about soft shutdowns in order to
- *      turn the timebomb registers off.
- */
-
-static struct notifier_block advwdt_notifier = {
-        .notifier_call = advwdt_notify_sys,
-};
-
-/*
  *      Init & exit routines
  */
 
@@ -299,18 +273,11 @@ advwdt_probe(struct platform_device *dev)
                         timeout);
         }
 
-        ret = register_reboot_notifier(&advwdt_notifier);
-        if (ret != 0) {
-                printk (KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
-                        ret);
-                goto unreg_regions;
-        }
-
         ret = misc_register(&advwdt_miscdev);
         if (ret != 0) {
                 printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
                         WATCHDOG_MINOR, ret);
-                goto unreg_reboot;
+                goto unreg_regions;
         }
 
         printk (KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d)\n",
@@ -318,8 +285,6 @@ advwdt_probe(struct platform_device *dev)
 
 out:
         return ret;
-unreg_reboot:
-        unregister_reboot_notifier(&advwdt_notifier);
 unreg_regions:
         release_region(wdt_start, 1);
 unreg_stop:
@@ -332,7 +297,6 @@ static int __devexit
 advwdt_remove(struct platform_device *dev)
 {
         misc_deregister(&advwdt_miscdev);
-        unregister_reboot_notifier(&advwdt_notifier);
         release_region(wdt_start,1);
         if(wdt_stop != wdt_start)
                 release_region(wdt_stop,1);
@@ -340,9 +304,17 @@ advwdt_remove(struct platform_device *dev)
         return 0;
 }
 
+static void
+advwdt_shutdown(struct platform_device *dev)
+{
+        /* Turn the WDT off if we have a soft shutdown */
+        advwdt_disable();
+}
+
 static struct platform_driver advwdt_driver = {
         .probe          = advwdt_probe,
         .remove         = __devexit_p(advwdt_remove),
+        .shutdown       = advwdt_shutdown,
         .driver         = {
                 .owner  = THIS_MODULE,
                 .name   = DRV_NAME,