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path: root/drivers/watchdog/bfin_wdt.c
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Diffstat (limited to 'drivers/watchdog/bfin_wdt.c')
-rw-r--r--drivers/watchdog/bfin_wdt.c56
1 files changed, 17 insertions, 39 deletions
diff --git a/drivers/watchdog/bfin_wdt.c b/drivers/watchdog/bfin_wdt.c
index 2159e66..9c7ccd1 100644
--- 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 = {