Just like in case of other watchdog drivers, use the new kernel core
API to provide restart support.
Signed-off-by: Rafał Miłecki <zajec5@xxxxxxxxx>
---
V2: Include changes to include/linux/bcm47xx_wdt.h
---
drivers/watchdog/bcm47xx_wdt.c | 22 ++++++++++++++++++++--
include/linux/bcm47xx_wdt.h | 1 +
2 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/drivers/watchdog/bcm47xx_wdt.c b/drivers/watchdog/bcm47xx_wdt.c
index 9816485..dac3c5d 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,
@@ -204,20 +215,27 @@ static int bcm47xx_wdt_probe(struct platform_device *pdev)
watchdog_set_nowayout(&wdt->wdd, nowayout);
wdt->notifier.notifier_call = &bcm47xx_wdt_notify_sys;
-
ret = register_reboot_notifier(&wdt->notifier);
if (ret)
goto err_timer;
- ret = watchdog_register_device(&wdt->wdd);
+ wdt->restart_handler.notifier_call = &bcm47xx_wdt_restart;
+ wdt->restart_handler.priority = 128;
+ 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 b708786..5582c21 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;
--
1.8.4.5
--
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