watchdog: imx2_wdt: use core restart handler
Get rid of the custom restart handler by using the one provided by the
watchdog core.
Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/imx2_wdt.c b/drivers/watchdog/imx2_wdt.c
index 29ef719..e47966a 100644
--- a/drivers/watchdog/imx2_wdt.c
+++ b/drivers/watchdog/imx2_wdt.c
@@ -29,10 +29,8 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
-#include <linux/notifier.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
-#include <linux/reboot.h>
#include <linux/regmap.h>
#include <linux/timer.h>
#include <linux/watchdog.h>
@@ -64,7 +62,6 @@
struct regmap *regmap;
struct timer_list timer; /* Pings the watchdog when closed */
struct watchdog_device wdog;
- struct notifier_block restart_handler;
};
static bool nowayout = WATCHDOG_NOWAYOUT;
@@ -83,13 +80,11 @@
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
};
-static int imx2_restart_handler(struct notifier_block *this, unsigned long mode,
- void *cmd)
+static int imx2_wdt_restart(struct watchdog_device *wdog)
{
+ struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);
unsigned int wcr_enable = IMX2_WDT_WCR_WDE;
- struct imx2_wdt_device *wdev = container_of(this,
- struct imx2_wdt_device,
- restart_handler);
+
/* Assert SRS signal */
regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable);
/*
@@ -105,7 +100,7 @@
/* wait for reset to assert... */
mdelay(500);
- return NOTIFY_DONE;
+ return 0;
}
static inline void imx2_wdt_setup(struct watchdog_device *wdog)
@@ -213,6 +208,7 @@
.stop = imx2_wdt_stop,
.ping = imx2_wdt_ping,
.set_timeout = imx2_wdt_set_timeout,
+ .restart = imx2_wdt_restart,
};
static const struct regmap_config imx2_wdt_regmap_config = {
@@ -275,6 +271,7 @@
platform_set_drvdata(pdev, wdog);
watchdog_set_drvdata(wdog, wdev);
watchdog_set_nowayout(wdog, nowayout);
+ watchdog_set_restart_priority(wdog, 128);
watchdog_init_timeout(wdog, timeout, &pdev->dev);
setup_timer(&wdev->timer, imx2_wdt_timer_ping, (unsigned long)wdog);
@@ -294,12 +291,6 @@
goto disable_clk;
}
- wdev->restart_handler.notifier_call = imx2_restart_handler;
- wdev->restart_handler.priority = 128;
- ret = register_restart_handler(&wdev->restart_handler);
- if (ret)
- dev_err(&pdev->dev, "cannot register restart handler\n");
-
dev_info(&pdev->dev, "timeout %d sec (nowayout=%d)\n",
wdog->timeout, nowayout);
@@ -315,8 +306,6 @@
struct watchdog_device *wdog = platform_get_drvdata(pdev);
struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog);
- unregister_restart_handler(&wdev->restart_handler);
-
watchdog_unregister_device(wdog);
if (imx2_wdt_is_running(wdev)) {