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authorGuenter Roeck <linux@roeck-us.net>2017-01-04 12:28:01 -0800
committerGuenter Roeck <linux@roeck-us.net>2017-02-24 14:00:23 -0800
commit0397c5db1d3174a553da674bb779007cc62cc241 (patch)
tree56f14dc560df77ddc680570f98ca29ad609584d3 /drivers/watchdog
parenta70dcc016fedfc214fb0d4cb59cd01d0117c8345 (diff)
downloadop-kernel-dev-0397c5db1d3174a553da674bb779007cc62cc241.zip
op-kernel-dev-0397c5db1d3174a553da674bb779007cc62cc241.tar.gz
watchdog: tangox: Use watchdog core to install restart handler
Use the infrastructure provided by the watchdog core to install the restart handler. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/tangox_wdt.c34
1 files changed, 13 insertions, 21 deletions
diff --git a/drivers/watchdog/tangox_wdt.c b/drivers/watchdog/tangox_wdt.c
index 202c4b9..d5fcce0 100644
--- a/drivers/watchdog/tangox_wdt.c
+++ b/drivers/watchdog/tangox_wdt.c
@@ -15,9 +15,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
-#include <linux/notifier.h>
#include <linux/platform_device.h>
-#include <linux/reboot.h>
#include <linux/watchdog.h>
#define DEFAULT_TIMEOUT 30
@@ -47,7 +45,6 @@ struct tangox_wdt_device {
void __iomem *base;
unsigned long clk_rate;
struct clk *clk;
- struct notifier_block restart;
};
static int tangox_wdt_set_timeout(struct watchdog_device *wdt,
@@ -96,24 +93,24 @@ static const struct watchdog_info tangox_wdt_info = {
.identity = "tangox watchdog",
};
+static int tangox_wdt_restart(struct watchdog_device *wdt,
+ unsigned long action, void *data)
+{
+ struct tangox_wdt_device *dev = watchdog_get_drvdata(wdt);
+
+ writel(1, dev->base + WD_COUNTER);
+
+ return 0;
+}
+
static const struct watchdog_ops tangox_wdt_ops = {
.start = tangox_wdt_start,
.stop = tangox_wdt_stop,
.set_timeout = tangox_wdt_set_timeout,
.get_timeleft = tangox_wdt_get_timeleft,
+ .restart = tangox_wdt_restart,
};
-static int tangox_wdt_restart(struct notifier_block *nb, unsigned long action,
- void *data)
-{
- struct tangox_wdt_device *dev =
- container_of(nb, struct tangox_wdt_device, restart);
-
- writel(1, dev->base + WD_COUNTER);
-
- return NOTIFY_DONE;
-}
-
static int tangox_wdt_probe(struct platform_device *pdev)
{
struct tangox_wdt_device *dev;
@@ -174,18 +171,14 @@ static int tangox_wdt_probe(struct platform_device *pdev)
tangox_wdt_start(&dev->wdt);
}
+ watchdog_set_restart_priority(&dev->wdt, 128);
+
err = watchdog_register_device(&dev->wdt);
if (err)
goto err;
platform_set_drvdata(pdev, dev);
- dev->restart.notifier_call = tangox_wdt_restart;
- dev->restart.priority = 128;
- err = register_restart_handler(&dev->restart);
- if (err)
- dev_warn(&pdev->dev, "failed to register restart handler\n");
-
dev_info(&pdev->dev, "SMP86xx/SMP87xx watchdog registered\n");
return 0;
@@ -202,7 +195,6 @@ static int tangox_wdt_remove(struct platform_device *pdev)
tangox_wdt_stop(&dev->wdt);
clk_disable_unprepare(dev->clk);
- unregister_restart_handler(&dev->restart);
watchdog_unregister_device(&dev->wdt);
return 0;
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