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watchdog: starfive: check watchdog status before enabling in system resume

Message ID 20240130055118.1917086-1-jisheng.teoh@starfivetech.com (mailing list archive)
State New
Delegated to: Guenter Roeck
Headers show
Series watchdog: starfive: check watchdog status before enabling in system resume | expand

Commit Message

Ji Sheng Teoh Jan. 30, 2024, 5:51 a.m. UTC 
System resume will start and enable watchdog regardless of whether the
watchdog is enabled/disabled during a system suspend.
Add a check to the watchdog status and only start and enable the
watchdog if the watchdog status is running/active.

Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Signed-off-by: Ji Sheng Teoh <jisheng.teoh@starfivetech.com>
---
 drivers/watchdog/starfive-wdt.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/watchdog/starfive-wdt.c b/drivers/watchdog/starfive-wdt.c
index e28ead24c520..f72fc38a41f8 100644
--- a/drivers/watchdog/starfive-wdt.c
+++ b/drivers/watchdog/starfive-wdt.c
@@ -554,7 +554,10 @@  static int starfive_wdt_resume(struct device *dev)
 	starfive_wdt_set_reload_count(wdt, wdt->reload);
 	starfive_wdt_lock(wdt);
 
-	return starfive_wdt_start(wdt);
+	if (watchdog_active(&wdt->wdd))
+		return starfive_wdt_start(wdt);
+
+	return 0;
 }
 
 static int starfive_wdt_runtime_suspend(struct device *dev)