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From: Claudiu <claudiu.beznea@tuxon.dev>
To: wim@linux-watchdog.org,
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	claudiu.beznea@tuxon.dev,
	Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Subject: [PATCH v6 4/9] watchdog: rzg2l_wdt: Check return status of pm_runtime_put()
Date: Thu,  8 Feb 2024 12:58:12 +0200
Message-Id: <20240208105817.2619703-5-claudiu.beznea.uj@bp.renesas.com>
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From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

pm_runtime_put() may return an error code. Check its return status.

Along with it the rzg2l_wdt_set_timeout() function was updated to
propagate the result of rzg2l_wdt_stop() to its caller.

Fixes: 2cbc5cd0b55f ("watchdog: Add Watchdog Timer driver for RZ/G2L")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v6:
- none

Changes in v5:
- none

Changes in v4:
- none

Changes in v3:
- none

Changes in v2:
- propagate the return code of rzg2l_wdt_stop() to it's callers


 drivers/watchdog/rzg2l_wdt.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/watchdog/rzg2l_wdt.c b/drivers/watchdog/rzg2l_wdt.c
index d87d4f50180c..7bce093316c4 100644
--- a/drivers/watchdog/rzg2l_wdt.c
+++ b/drivers/watchdog/rzg2l_wdt.c
@@ -144,9 +144,13 @@ static int rzg2l_wdt_start(struct watchdog_device *wdev)
 static int rzg2l_wdt_stop(struct watchdog_device *wdev)
 {
 	struct rzg2l_wdt_priv *priv = watchdog_get_drvdata(wdev);
+	int ret;
 
 	rzg2l_wdt_reset(priv);
-	pm_runtime_put(wdev->parent);
+
+	ret = pm_runtime_put(wdev->parent);
+	if (ret < 0)
+		return ret;
 
 	return 0;
 }
@@ -163,7 +167,10 @@ static int rzg2l_wdt_set_timeout(struct watchdog_device *wdev, unsigned int time
 	 * to reset the module) so that it is updated with new timeout values.
 	 */
 	if (watchdog_active(wdev)) {
-		rzg2l_wdt_stop(wdev);
+		ret = rzg2l_wdt_stop(wdev);
+		if (ret)
+			return ret;
+
 		ret = rzg2l_wdt_start(wdev);
 	}
 
-- 
2.39.2