From c8a87714ac6354b317bd077e8f8324ac908f8c00 Mon Sep 17 00:00:00 2001
From: tao89959 <1036524114@qq.com>
Date: Thu, 26 Mar 2026 16:31:11 +0800
Subject: [PATCH] loongson: watchdog: fix ping watchdog failed when watchdog
 close
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Changelog: 修复loongson看门狗驱动当关闭时，无法喂狗的问题
Signed-off-by: maoxiaochuan <maoxiaochuan@loongson.cn>
---
 drivers/watchdog/loongson2_wdt.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/watchdog/loongson2_wdt.c b/drivers/watchdog/loongson2_wdt.c
index 83252edf3..3648e8c1c 100644
--- a/drivers/watchdog/loongson2_wdt.c
+++ b/drivers/watchdog/loongson2_wdt.c
@@ -29,7 +29,9 @@ struct ls2x_wdt_drvdata {
 static int ls2x_wdt_ping(struct watchdog_device *wdt_dev)
 {
 	struct ls2x_wdt_drvdata *drvdata = watchdog_get_drvdata(wdt_dev);
+	u8 wd_en = 1;
 
+	writel((1 << wd_en), drvdata->base + RST_CTR);
 	writel(0x1, drvdata->base + WD_CR);
 
 	return 0;