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authorRafał Miłecki <zajec5@gmail.com>2015-01-25 11:40:57 +0100
committerWim Van Sebroeck <wim@iguana.be>2015-02-17 21:33:27 +0100
commit1cc7495c60879eeeda52385a70c99c4cbaace7ef (patch)
tree2cba15b6cfc6e2607f0fbdd0f52242222eb56cb5
parentba804a9510df555c42c2be6c340960879afe39d2 (diff)
watchdog: bcm47xx_wdt.c: add restart handler support
Just like in case of other watchdog drivers, use the new kernel core API to provide restart support. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
-rw-r--r--drivers/watchdog/bcm47xx_wdt.c21
-rw-r--r--include/linux/bcm47xx_wdt.h1
2 files changed, 21 insertions, 1 deletions
diff --git a/drivers/watchdog/bcm47xx_wdt.c b/drivers/watchdog/bcm47xx_wdt.c
index 9816485f6825..b28a072abf78 100644
--- a/drivers/watchdog/bcm47xx_wdt.c
+++ b/drivers/watchdog/bcm47xx_wdt.c
@@ -169,6 +169,17 @@ static int bcm47xx_wdt_notify_sys(struct notifier_block *this,
return NOTIFY_DONE;
}
+static int bcm47xx_wdt_restart(struct notifier_block *this, unsigned long mode,
+ void *cmd)
+{
+ struct bcm47xx_wdt *wdt;
+
+ wdt = container_of(this, struct bcm47xx_wdt, restart_handler);
+ wdt->timer_set(wdt, 1);
+
+ return NOTIFY_DONE;
+}
+
static struct watchdog_ops bcm47xx_wdt_soft_ops = {
.owner = THIS_MODULE,
.start = bcm47xx_wdt_soft_start,
@@ -209,15 +220,23 @@ static int bcm47xx_wdt_probe(struct platform_device *pdev)
if (ret)
goto err_timer;
- ret = watchdog_register_device(&wdt->wdd);
+ wdt->restart_handler.notifier_call = &bcm47xx_wdt_restart;
+ wdt->restart_handler.priority = 64;
+ ret = register_restart_handler(&wdt->restart_handler);
if (ret)
goto err_notifier;
+ ret = watchdog_register_device(&wdt->wdd);
+ if (ret)
+ goto err_handler;
+
dev_info(&pdev->dev, "BCM47xx Watchdog Timer enabled (%d seconds%s%s)\n",
timeout, nowayout ? ", nowayout" : "",
soft ? ", Software Timer" : "");
return 0;
+err_handler:
+ unregister_restart_handler(&wdt->restart_handler);
err_notifier:
unregister_reboot_notifier(&wdt->notifier);
err_timer:
diff --git a/include/linux/bcm47xx_wdt.h b/include/linux/bcm47xx_wdt.h
index b708786d4cbf..5582c211f594 100644
--- a/include/linux/bcm47xx_wdt.h
+++ b/include/linux/bcm47xx_wdt.h
@@ -16,6 +16,7 @@ struct bcm47xx_wdt {
struct watchdog_device wdd;
struct notifier_block notifier;
+ struct notifier_block restart_handler;
struct timer_list soft_timer;
atomic_t soft_ticks;