Use the infrastructure provided by the watchdog core to install
the restart handler.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/watchdog/dw_wdt.c | 21 +++++----------------
1 file changed, 5 insertions(+), 16 deletions(-)
diff --git a/drivers/watchdog/dw_wdt.c b/drivers/watchdog/dw_wdt.c
index 3c6a3de13a1b..158054904876 100644
--- a/drivers/watchdog/dw_wdt.c
+++ b/drivers/watchdog/dw_wdt.c
@@ -26,11 +26,9 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
-#include <linux/notifier.h>
#include <linux/of.h>
#include <linux/pm.h>
#include <linux/platform_device.h>
-#include <linux/reboot.h>
#include <linux/watchdog.h>
#define WDOG_CONTROL_REG_OFFSET 0x00
@@ -55,7 +53,6 @@ struct dw_wdt {
void __iomem *regs;
struct clk *clk;
unsigned long rate;
- struct notifier_block restart_handler;
struct watchdog_device wdd;
};
@@ -136,14 +133,12 @@ static int dw_wdt_start(struct watchdog_device *wdd)
return 0;
}
-static int dw_wdt_restart_handle(struct notifier_block *this,
- unsigned long mode, void *cmd)
+static int dw_wdt_restart(struct watchdog_device *wdd,
+ unsigned long action, void *data)
{
- struct dw_wdt *dw_wdt;
+ struct dw_wdt *dw_wdt = to_dw_wdt(wdd);
u32 val;
- dw_wdt = container_of(this, struct dw_wdt, restart_handler);
-
writel(0, dw_wdt->regs + WDOG_TIMEOUT_RANGE_REG_OFFSET);
val = readl(dw_wdt->regs + WDOG_CONTROL_REG_OFFSET);
if (val & WDOG_CONTROL_REG_WDT_EN_MASK)
@@ -156,7 +151,7 @@ static int dw_wdt_restart_handle(struct notifier_block *this,
/* wait for reset to assert... */
mdelay(500);
- return NOTIFY_DONE;
+ return 0;
}
static unsigned int dw_wdt_get_timeleft(struct watchdog_device *wdd)
@@ -179,6 +174,7 @@ static const struct watchdog_ops dw_wdt_ops = {
.ping = dw_wdt_ping,
.set_timeout = dw_wdt_set_timeout,
.get_timeleft = dw_wdt_get_timeleft,
+ .restart = dw_wdt_restart,
};
#ifdef CONFIG_PM_SLEEP
@@ -269,12 +265,6 @@ static int dw_wdt_drv_probe(struct platform_device *pdev)
if (ret)
goto out_disable_clk;
- dw_wdt->restart_handler.notifier_call = dw_wdt_restart_handle;
- dw_wdt->restart_handler.priority = 128;
- ret = register_restart_handler(&dw_wdt->restart_handler);
- if (ret)
- pr_warn("cannot register restart handler\n");
-
return 0;
out_disable_clk:
@@ -286,7 +276,6 @@ static int dw_wdt_drv_remove(struct platform_device *pdev)
{
struct dw_wdt *dw_wdt = platform_get_drvdata(pdev);
- unregister_restart_handler(&dw_wdt->restart_handler);
watchdog_unregister_device(&dw_wdt->wdd);
clk_disable_unprepare(dw_wdt->clk);
--
2.7.4
--
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