[WATCHDOG] s3c2410 watchdog - replace reboot notifier

Patch from Dimitry Andric <dimitry.andric@tomtom.com>

Change to using platfrom driver's .shutdown method instead
of an reboot notifier

Signed-off-by: Dimitry Andric <dimitry.andric@tomtom.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/char/watchdog/s3c2410_wdt.c b/drivers/char/watchdog/s3c2410_wdt.c
index 5224357..8b292bf 100644 (file)
--- a/drivers/char/watchdog/s3c2410_wdt.c
+++ b/drivers/char/watchdog/s3c2410_wdt.c
@@ -30,6 +30,7 @@
  *     11-Jan-2005     BJD     Fixed divide-by-2 in timeout code
  *
  *     25-Jan-2005     DA      Added suspend/resume support
+ *                             Replaced reboot notifier with .shutdown method
  *
  *     10-Mar-2005     LCVR    Changed S3C2410_VA to S3C24XX_VA
 */
@@ -42,8 +43,6 @@
 #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/device.h>
 #include <linux/interrupt.h>
@@ -319,20 +318,6 @@ static int s3c2410wdt_ioctl(struct inode *inode, struct file *file,
        }
 }
 
-/*
- *     Notifier for system down
- */
-
-static int s3c2410wdt_notify_sys(struct notifier_block *this, unsigned long code,
-                             void *unused)
-{
-       if(code==SYS_DOWN || code==SYS_HALT) {
-               /* Turn the WDT off */
-               s3c2410wdt_stop();
-       }
-       return NOTIFY_DONE;
-}
-
 /* kernel interface */
 
 static struct file_operations s3c2410wdt_fops = {
@@ -350,10 +335,6 @@ static struct miscdevice s3c2410wdt_miscdev = {
        .fops           = &s3c2410wdt_fops,
 };
 
-static struct notifier_block s3c2410wdt_notifier = {
-       .notifier_call  = s3c2410wdt_notify_sys,
-};
-
 /* interrupt handler code */
 
 static irqreturn_t s3c2410wdt_irq(int irqno, void *param,
@@ -434,18 +415,10 @@ static int s3c2410wdt_probe(struct device *dev)
                }
        }
 
-       ret = register_reboot_notifier(&s3c2410wdt_notifier);
-       if (ret) {
-               printk (KERN_ERR PFX "cannot register reboot notifier (%d)\n",
-                       ret);
-               return ret;
-       }
-
        ret = misc_register(&s3c2410wdt_miscdev);
        if (ret) {
                printk (KERN_ERR PFX "cannot register miscdev on minor=%d (%d)\n",
                        WATCHDOG_MINOR, ret);
-               unregister_reboot_notifier(&s3c2410wdt_notifier);
                return ret;
        }
 
@@ -481,6 +454,11 @@ static int s3c2410wdt_remove(struct device *dev)
        return 0;
 }
 
+static void s3c2410wdt_shutdown(struct device *dev)
+{
+       s3c2410wdt_stop();      
+}
+
 #ifdef CONFIG_PM
 
 static unsigned long wtcon_save;
@@ -527,6 +505,7 @@ static struct device_driver s3c2410wdt_driver = {
        .bus            = &platform_bus_type,
        .probe          = s3c2410wdt_probe,
        .remove         = s3c2410wdt_remove,
+       .shutdown       = s3c2410wdt_shutdown,
        .suspend        = s3c2410wdt_suspend,
        .resume         = s3c2410wdt_resume,
 };
@@ -543,7 +522,6 @@ static int __init watchdog_init(void)
 static void __exit watchdog_exit(void)
 {
        driver_unregister(&s3c2410wdt_driver);
-       unregister_reboot_notifier(&s3c2410wdt_notifier);
 }
 
 module_init(watchdog_init);