watchdog: moxart_wdt: use core restart handler

#include <linux/module.h>

#include <linux/err.h>

#include <linux/kernel.h>

#include <linux/notifier.h>

#include <linux/platform_device.h>

#include <linux/reboot.h>

#include <linux/watchdog.h>

#include <linux/moduleparam.h>

	struct watchdog_device dev;

	void __iomem *base;

	unsigned int clock_frequency;

	struct notifier_block restart_handler;

};

static int heartbeat;

static int moxart_restart_handle(struct notifier_block *this,

				 unsigned long mode, void *cmd)

static int moxart_wdt_restart(struct watchdog_device *wdt_dev)

{

	struct moxart_wdt_dev *moxart_wdt = container_of(this,

							 struct moxart_wdt_dev,

							 restart_handler);

	struct moxart_wdt_dev *moxart_wdt = watchdog_get_drvdata(wdt_dev);

	writel(1, moxart_wdt->base + REG_COUNT);

	writel(0x5ab9, moxart_wdt->base + REG_MODE);

	writel(0x03, moxart_wdt->base + REG_ENABLE);

	return NOTIFY_DONE;

	return 0;

}

static int moxart_wdt_stop(struct watchdog_device *wdt_dev)

	.start          = moxart_wdt_start,

	.stop           = moxart_wdt_stop,

	.set_timeout    = moxart_wdt_set_timeout,

	.restart        = moxart_wdt_restart,

};

static int moxart_wdt_probe(struct platform_device *pdev)

	watchdog_init_timeout(&moxart_wdt->dev, heartbeat, dev);

	watchdog_set_nowayout(&moxart_wdt->dev, nowayout);

	watchdog_set_restart_priority(&moxart_wdt->dev, 128);

	watchdog_set_drvdata(&moxart_wdt->dev, moxart_wdt);

	if (err)

		return err;

	moxart_wdt->restart_handler.notifier_call = moxart_restart_handle;

	moxart_wdt->restart_handler.priority = 128;

	err = register_restart_handler(&moxart_wdt->restart_handler);

	if (err)

		dev_err(dev, "cannot register restart notifier (err=%d)\n",

			err);

	dev_dbg(dev, "Watchdog enabled (heartbeat=%d sec, nowayout=%d)\n",

		moxart_wdt->dev.timeout, nowayout);

{

	struct moxart_wdt_dev *moxart_wdt = platform_get_drvdata(pdev);

	unregister_restart_handler(&moxart_wdt->restart_handler);

	moxart_wdt_stop(&moxart_wdt->dev);

	return 0;