From 27fdf84510a1374748904db43f6755f912736d92 Mon Sep 17 00:00:00 2001
From: Liu Xinpeng <liuxp11@chinatelecom.cn>
Date: Tue, 26 Apr 2022 22:53:29 +0800
Subject: [PATCH] watchdog: wdat_wdt: Stop watchdog when rebooting the system
Git-commit: 27fdf84510a1374748904db43f6755f912736d92
Patch-mainline: v5.19-rc1
References: git-fixes

Executing reboot command several times on the machine "Dell
PowerEdge R740", UEFI security detection stopped machine
with the following prompt:

Uefi0082: The system was reset due to a timeout from the watchdog
timer. Check the System Event Log (SEL) or crash dumps from
Operating Sysstem to identify the source that triggered the
watchdog timer reset. Update the firmware or driver for the
identified device.

iDRAC has warning event: "The watchdog timer reset the system".

This patch fixes this issue by adding the reboot notifier.

Signed-off-by: Liu Xinpeng <liuxp11@chinatelecom.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1650984810-6247-3-git-send-email-liuxp11@chinatelecom.cn
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/watchdog/wdat_wdt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/watchdog/wdat_wdt.c b/drivers/watchdog/wdat_wdt.c
index df0865a61a70..6f36a653767b 100644
--- a/drivers/watchdog/wdat_wdt.c
+++ b/drivers/watchdog/wdat_wdt.c
@@ -462,6 +462,7 @@ static int wdat_wdt_probe(struct platform_device *pdev)
 		return ret;
 
 	watchdog_set_nowayout(&wdat->wdd, nowayout);
+	watchdog_stop_on_reboot(&wdat->wdd);
 	return devm_watchdog_register_device(dev, &wdat->wdd);
 }
 
-- 
2.35.3