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watchdog: bcm47xx_wdt.c: add restart handler support

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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>
This commit is contained in:
Rafał Miłecki 2015-01-25 11:40:57 +01:00 committed by Wim Van Sebroeck
parent ba804a9510
commit 1cc7495c60
2 changed files with 21 additions and 1 deletions
drivers/watchdog
bcm47xx_wdt.c
include/linux
bcm47xx_wdt.h

21
drivers/watchdog/bcm47xx_wdt.c
View File

@ -169,6 +169,17 @@ static int bcm47xx_wdt_notify_sys(struct notifier_block *this,
return NOTIFY_DONE; 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 = { static struct watchdog_ops bcm47xx_wdt_soft_ops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.start = bcm47xx_wdt_soft_start, .start = bcm47xx_wdt_soft_start,
@ -209,15 +220,23 @@ static int bcm47xx_wdt_probe(struct platform_device *pdev)
if (ret) if (ret)
goto err_timer; 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) if (ret)
goto err_notifier; 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", dev_info(&pdev->dev, "BCM47xx Watchdog Timer enabled (%d seconds%s%s)\n",
timeout, nowayout ? ", nowayout" : "", timeout, nowayout ? ", nowayout" : "",
soft ? ", Software Timer" : ""); soft ? ", Software Timer" : "");
return 0; return 0;
err_handler:
unregister_restart_handler(&wdt->restart_handler);
err_notifier: err_notifier:
unregister_reboot_notifier(&wdt->notifier); unregister_reboot_notifier(&wdt->notifier);
err_timer: err_timer:

1
include/linux/bcm47xx_wdt.h
View File

@ -16,6 +16,7 @@ struct bcm47xx_wdt {
struct watchdog_device wdd; struct watchdog_device wdd;
struct notifier_block notifier; struct notifier_block notifier;
struct notifier_block restart_handler;
struct timer_list soft_timer; struct timer_list soft_timer;
atomic_t soft_ticks; atomic_t soft_ticks;