linux-kernel - [PATCH] watchdog: mtk_wdt: Use NOIRQ_SYSTEM_SLEEP_PM

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Message-Id: <20250729035117.3170-1-aosun718@gmail.com>
Date: Tue, 29 Jul 2025 11:51:17 +0800
From: Ao Sun <aosun718@...il.com>
To: wim@...ux-watchdog.org,
	linux@...ck-us.net,
	matthias.bgg@...il.com,
	p.zabel@...gutronix.de
Cc: linux-watchdog@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	geng.sun@...nssion.com,
	Ao Sun <aosun718@...il.com>
Subject: [PATCH] watchdog: mtk_wdt: Use NOIRQ_SYSTEM_SLEEP_PM_OPS()

During the device resume process, an interrupt storm occurs after
interrupts are enabled, preventing the watchdog device from being
awakened and functioning.

To ensure that the watchdog is executed before interrupts are enabled,
Use NOIRQ_SYSTEM_SLEEP_PM_OPS().

Signed-off-by: Ao Sun <aosun718@...il.com>
---
 drivers/watchdog/mtk_wdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
index d6a6393f609d..5f2179dabd67 100644
--- a/drivers/watchdog/mtk_wdt.c
+++ b/drivers/watchdog/mtk_wdt.c
@@ -327,7 +327,7 @@ static const struct of_device_id mtk_wdt_dt_ids[] = {
 MODULE_DEVICE_TABLE(of, mtk_wdt_dt_ids);
 
 static const struct dev_pm_ops mtk_wdt_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(mtk_wdt_suspend,
+	 SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(mtk_wdt_suspend,
 				mtk_wdt_resume)
 };
 
-- 
2.34.1