From: Kery Qi <qikeyu2017@gmail.com>
Date: Sun, 11 Jan 2026 17:29:15 +0000 (+0800)
Subject: watchdog: starfive-wdt: Fix PM reference leak in probe error path
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3f2d8d79cceb05a8b8dd200fa81c0dffc59ec46f;p=thirdparty%2Flinux.git

watchdog: starfive-wdt: Fix PM reference leak in probe error path

The PM reference count is not expected to be incremented on return in
functions starfive_wdt_probe.

However, pm_runtime_get_sync will increment pm usage counter
even failed. Forgetting to putting operation will result in a
reference leak here.

Replace it with pm_runtime_resume_and_get to keep usage
counter balanced.

Fixes: db728ea9c7be ("drivers: watchdog: Add StarFive Watchdog driver")
Signed-off-by: Kery Qi <qikeyu2017@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
---

diff --git a/drivers/watchdog/starfive-wdt.c b/drivers/watchdog/starfive-wdt.c
index ed71d3960a0f..af55adc4a3c6 100644
--- a/drivers/watchdog/starfive-wdt.c
+++ b/drivers/watchdog/starfive-wdt.c
@@ -446,7 +446,7 @@ static int starfive_wdt_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, wdt);
 	pm_runtime_enable(&pdev->dev);
 	if (pm_runtime_enabled(&pdev->dev)) {
-		ret = pm_runtime_get_sync(&pdev->dev);
+		ret = pm_runtime_resume_and_get(&pdev->dev);
 		if (ret < 0)
 			return ret;
 	} else {