watchdog: mtk_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/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
index b751f43..b78776c 100644
--- a/drivers/watchdog/mtk_wdt.c
+++ b/drivers/watchdog/mtk_wdt.c
@@ -28,8 +28,6 @@
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/watchdog.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
#include <linux/delay.h>
#define WDT_MAX_TIMEOUT 31
@@ -64,16 +62,13 @@
struct mtk_wdt_dev {
struct watchdog_device wdt_dev;
void __iomem *wdt_base;
- struct notifier_block restart_handler;
};
-static int mtk_reset_handler(struct notifier_block *this, unsigned long mode,
- void *cmd)
+static int mtk_wdt_restart(struct watchdog_device *wdt_dev)
{
- struct mtk_wdt_dev *mtk_wdt;
+ struct mtk_wdt_dev *mtk_wdt = watchdog_get_drvdata(wdt_dev);
void __iomem *wdt_base;
- mtk_wdt = container_of(this, struct mtk_wdt_dev, restart_handler);
wdt_base = mtk_wdt->wdt_base;
while (1) {
@@ -81,7 +76,7 @@
mdelay(5);
}
- return NOTIFY_DONE;
+ return 0;
}
static int mtk_wdt_ping(struct watchdog_device *wdt_dev)
@@ -161,6 +156,7 @@
.stop = mtk_wdt_stop,
.ping = mtk_wdt_ping,
.set_timeout = mtk_wdt_set_timeout,
+ .restart = mtk_wdt_restart,
};
static int mtk_wdt_probe(struct platform_device *pdev)
@@ -189,6 +185,7 @@
watchdog_init_timeout(&mtk_wdt->wdt_dev, timeout, &pdev->dev);
watchdog_set_nowayout(&mtk_wdt->wdt_dev, nowayout);
+ watchdog_set_restart_priority(&mtk_wdt->wdt_dev, 128);
watchdog_set_drvdata(&mtk_wdt->wdt_dev, mtk_wdt);
@@ -198,13 +195,6 @@
if (unlikely(err))
return err;
- mtk_wdt->restart_handler.notifier_call = mtk_reset_handler;
- mtk_wdt->restart_handler.priority = 128;
- err = register_restart_handler(&mtk_wdt->restart_handler);
- if (err)
- dev_warn(&pdev->dev,
- "cannot register restart handler (err=%d)\n", err);
-
dev_info(&pdev->dev, "Watchdog enabled (timeout=%d sec, nowayout=%d)\n",
mtk_wdt->wdt_dev.timeout, nowayout);
@@ -223,8 +213,6 @@
{
struct mtk_wdt_dev *mtk_wdt = platform_get_drvdata(pdev);
- unregister_restart_handler(&mtk_wdt->restart_handler);
-
watchdog_unregister_device(&mtk_wdt->wdt_dev);
return 0;