81 lines
2.5 KiB
Diff
81 lines
2.5 KiB
Diff
From 823769d2e6622a48276bee35b2dad5ba77cbdc25 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Sun, 25 Jan 2015 11:40:57 +0100
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Subject: [PATCH] watchdog: bcm47xx_wdt.c: add restart handler support
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Just like in case of other watchdog drivers, use the new kernel core
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API to provide restart support.
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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Reviewed-by: Guenter Roeck <linux@roeck-us.net>
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Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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---
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drivers/watchdog/bcm47xx_wdt.c | 21 ++++++++++++++++++++-
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include/linux/bcm47xx_wdt.h | 1 +
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2 files changed, 21 insertions(+), 1 deletion(-)
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diff --git a/drivers/watchdog/bcm47xx_wdt.c b/drivers/watchdog/bcm47xx_wdt.c
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index 9816485..b28a072 100644
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--- a/drivers/watchdog/bcm47xx_wdt.c
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+++ b/drivers/watchdog/bcm47xx_wdt.c
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@@ -169,6 +169,17 @@ static int bcm47xx_wdt_notify_sys(struct notifier_block *this,
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return NOTIFY_DONE;
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}
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+static int bcm47xx_wdt_restart(struct notifier_block *this, unsigned long mode,
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+ void *cmd)
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+{
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+ struct bcm47xx_wdt *wdt;
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+
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+ wdt = container_of(this, struct bcm47xx_wdt, restart_handler);
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+ wdt->timer_set(wdt, 1);
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+
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+ return NOTIFY_DONE;
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+}
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+
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static struct watchdog_ops bcm47xx_wdt_soft_ops = {
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.owner = THIS_MODULE,
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.start = bcm47xx_wdt_soft_start,
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@@ -209,15 +220,23 @@ static int bcm47xx_wdt_probe(struct platform_device *pdev)
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if (ret)
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goto err_timer;
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- ret = watchdog_register_device(&wdt->wdd);
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+ wdt->restart_handler.notifier_call = &bcm47xx_wdt_restart;
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+ wdt->restart_handler.priority = 64;
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+ ret = register_restart_handler(&wdt->restart_handler);
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if (ret)
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goto err_notifier;
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+ ret = watchdog_register_device(&wdt->wdd);
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+ if (ret)
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+ goto err_handler;
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+
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dev_info(&pdev->dev, "BCM47xx Watchdog Timer enabled (%d seconds%s%s)\n",
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timeout, nowayout ? ", nowayout" : "",
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soft ? ", Software Timer" : "");
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return 0;
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+err_handler:
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+ unregister_restart_handler(&wdt->restart_handler);
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err_notifier:
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unregister_reboot_notifier(&wdt->notifier);
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err_timer:
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diff --git a/include/linux/bcm47xx_wdt.h b/include/linux/bcm47xx_wdt.h
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index b708786..5582c21 100644
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--- a/include/linux/bcm47xx_wdt.h
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+++ b/include/linux/bcm47xx_wdt.h
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@@ -16,6 +16,7 @@ struct bcm47xx_wdt {
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struct watchdog_device wdd;
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struct notifier_block notifier;
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+ struct notifier_block restart_handler;
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struct timer_list soft_timer;
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atomic_t soft_ticks;
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--
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1.8.4.5
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