[WATCHDOG] change reboot_notifier to platform-shutdown method.

[pandora-kernel.git] / drivers / watchdog / bfin_wdt.c

diff --git a/drivers/watchdog/bfin_wdt.c b/drivers/watchdog/bfin_wdt.c
index 2159e66..9c7ccd1 100644 (file)
--- a/drivers/watchdog/bfin_wdt.c
+++ b/drivers/watchdog/bfin_wdt.c
@@ -19,8 +19,6 @@
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
 #include <linux/fs.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/uaccess.h>
@@ -74,7 +72,7 @@
 
 static unsigned int timeout = WATCHDOG_TIMEOUT;
 static int nowayout = WATCHDOG_NOWAYOUT;
-static struct watchdog_info bfin_wdt_info;
+static const struct watchdog_info bfin_wdt_info;
 static unsigned long open_check;
 static char expect_close;
 static DEFINE_SPINLOCK(bfin_wdt_spinlock);
@@ -309,26 +307,6 @@ static long bfin_wdt_ioctl(struct file *file,
        }
 }
 
-/**
- *     bfin_wdt_notify_sys - Notifier Handler
- *     @this: notifier block
- *     @code: notifier event
- *     @unused: unused
- *
- *     Handles specific events, such as turning off the watchdog during a
- *     shutdown event.
- */
-static int bfin_wdt_notify_sys(struct notifier_block *this,
-                                       unsigned long code, void *unused)
-{
-       stampit();
-
-       if (code == SYS_DOWN || code == SYS_HALT)
-               bfin_wdt_stop();
-
-       return NOTIFY_DONE;
-}
-
 #ifdef CONFIG_PM
 static int state_before_suspend;
 
@@ -388,40 +366,28 @@ static struct miscdevice bfin_wdt_miscdev = {
        .fops     = &bfin_wdt_fops,
 };
 
-static struct watchdog_info bfin_wdt_info = {
+static const struct watchdog_info bfin_wdt_info = {
        .identity = "Blackfin Watchdog",
        .options  = WDIOF_SETTIMEOUT |
                    WDIOF_KEEPALIVEPING |
                    WDIOF_MAGICCLOSE,
 };
 
-static struct notifier_block bfin_wdt_notifier = {
-       .notifier_call = bfin_wdt_notify_sys,
-};
-
 /**
  *     bfin_wdt_probe - Initialize module
  *
- *     Registers the misc device and notifier handler.  Actual device
+ *     Registers the misc device.  Actual device
  *     initialization is handled by bfin_wdt_open().
  */
 static int __devinit bfin_wdt_probe(struct platform_device *pdev)
 {
        int ret;
 
-       ret = register_reboot_notifier(&bfin_wdt_notifier);
-       if (ret) {
-               pr_devinit(KERN_ERR PFX
-                       "cannot register reboot notifier (err=%d)\n", ret);
-               return ret;
-       }
-
        ret = misc_register(&bfin_wdt_miscdev);
        if (ret) {
                pr_devinit(KERN_ERR PFX
                        "cannot register miscdev on minor=%d (err=%d)\n",
                                WATCHDOG_MINOR, ret);
-               unregister_reboot_notifier(&bfin_wdt_notifier);
                return ret;
        }
 
@@ -434,21 +400,33 @@ static int __devinit bfin_wdt_probe(struct platform_device *pdev)
 /**
  *     bfin_wdt_remove - Initialize module
  *
- *     Unregisters the misc device and notifier handler.  Actual device
+ *     Unregisters the misc device.  Actual device
  *     deinitialization is handled by bfin_wdt_close().
  */
 static int __devexit bfin_wdt_remove(struct platform_device *pdev)
 {
        misc_deregister(&bfin_wdt_miscdev);
-       unregister_reboot_notifier(&bfin_wdt_notifier);
        return 0;
 }
 
+/**
+ *     bfin_wdt_shutdown - Soft Shutdown Handler
+ *
+ *     Handles the soft shutdown event.
+ */
+static void bfin_wdt_shutdown(struct platform_device *pdev)
+{
+       stampit();
+
+       bfin_wdt_stop();
+}
+
 static struct platform_device *bfin_wdt_device;
 
 static struct platform_driver bfin_wdt_driver = {
        .probe     = bfin_wdt_probe,
        .remove    = __devexit_p(bfin_wdt_remove),
+       .shutdown  = bfin_wdt_shutdown,
        .suspend   = bfin_wdt_suspend,
        .resume    = bfin_wdt_resume,
        .driver    = {