linux-kernel - [PATCH 4.19 036/323] watchdog: Fix OMAP watchdog early handling

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Message-Id: <20211124115720.088836751@linuxfoundation.org>
Date:   Wed, 24 Nov 2021 12:53:46 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Walter Stoll <walter.stoll@...gon.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 036/323] watchdog: Fix OMAP watchdog early handling

From: Walter Stoll <walter.stoll@...gon.com>

[ Upstream commit cd004d8299f1dc6cfa6a4eea8f94cb45eaedf070 ]

TI's implementation does not service the watchdog even if the kernel
command line parameter omap_wdt.early_enable is set to 1. This patch
fixes the issue.

Signed-off-by: Walter Stoll <walter.stoll@...gon.com>
Reviewed-by: Guenter Roeck <linux@...ck-us.net>
Link: https://lore.kernel.org/r/88a8fe5229cd68fa0f1fd22f5d66666c1b7057a0.camel@duagon.com
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@...ux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/watchdog/omap_wdt.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
index cbd752f9ac563..7376ba56cdf2e 100644
--- a/drivers/watchdog/omap_wdt.c
+++ b/drivers/watchdog/omap_wdt.c
@@ -272,8 +272,12 @@ static int omap_wdt_probe(struct platform_device *pdev)
 			wdev->wdog.bootstatus = WDIOF_CARDRESET;
 	}
 
-	if (!early_enable)
+	if (early_enable) {
+		omap_wdt_start(&wdev->wdog);
+		set_bit(WDOG_HW_RUNNING, &wdev->wdog.status);
+	} else {
 		omap_wdt_disable(wdev);
+	}
 
 	ret = watchdog_register_device(&wdev->wdog);
 	if (ret) {
-- 
2.33.0