watchdog: qcom-wdt: use core restart handler

#include <linux/module.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/reboot.h>

#include <linux/watchdog.h>

#define WDT_RST		0x38

	struct watchdog_device	wdd;

	struct clk		*clk;

	unsigned long		rate;

	struct notifier_block	restart_nb;

	void __iomem		*base;

};

	return qcom_wdt_start(wdd);

}

static const struct watchdog_ops qcom_wdt_ops = {

	.start		= qcom_wdt_start,

	.stop		= qcom_wdt_stop,

	.ping		= qcom_wdt_ping,

	.set_timeout	= qcom_wdt_set_timeout,

	.owner		= THIS_MODULE,

};

static const struct watchdog_info qcom_wdt_info = {

	.options	= WDIOF_KEEPALIVEPING

			| WDIOF_MAGICCLOSE

			| WDIOF_SETTIMEOUT,

	.identity	= KBUILD_MODNAME,

};

static int qcom_wdt_restart(struct notifier_block *nb, unsigned long action,

			    void *data)

static int qcom_wdt_restart(struct watchdog_device *wdd)

{

	struct qcom_wdt *wdt = container_of(nb, struct qcom_wdt, restart_nb);

	struct qcom_wdt *wdt = to_qcom_wdt(wdd);

	u32 timeout;

	/*

	wmb();

	msleep(150);

	return NOTIFY_DONE;

	return 0;

}

static const struct watchdog_ops qcom_wdt_ops = {

	.start		= qcom_wdt_start,

	.stop		= qcom_wdt_stop,

	.ping		= qcom_wdt_ping,

	.set_timeout	= qcom_wdt_set_timeout,

	.restart        = qcom_wdt_restart,

	.owner		= THIS_MODULE,

};

static const struct watchdog_info qcom_wdt_info = {

	.options	= WDIOF_KEEPALIVEPING

			| WDIOF_MAGICCLOSE

			| WDIOF_SETTIMEOUT,

	.identity	= KBUILD_MODNAME,

};

static int qcom_wdt_probe(struct platform_device *pdev)

{

	struct qcom_wdt *wdt;

		goto err_clk_unprepare;

	}

	/*

	 * WDT restart notifier has priority 0 (use as a last resort)

	 */

	wdt->restart_nb.notifier_call = qcom_wdt_restart;

	ret = register_restart_handler(&wdt->restart_nb);

	if (ret)

		dev_err(&pdev->dev, "failed to setup restart handler\n");

	platform_set_drvdata(pdev, wdt);

	return 0;

{

	struct qcom_wdt *wdt = platform_get_drvdata(pdev);

	unregister_restart_handler(&wdt->restart_nb);

	watchdog_unregister_device(&wdt->wdd);

	clk_disable_unprepare(wdt->clk);

	return 0;