[v7,3/9] watchdog: rzg2l_wdt: Use pm_runtime_resume_and_get()

Commit Message

Claudiu Beznea Feb. 15, 2024, 2:08 p.m. UTC

From: Claudiu Beznea <[e-mail]>

pm_runtime_get_sync() may return with error. In case it returns with error
dev->power.usage_count needs to be decremented. pm_runtime_resume_and_get()
takes care of this. Thus use it.

Along with it the rzg2l_wdt_set_timeout() function was updated to
propagate the result of rzg2l_wdt_start() to its caller.

Fixes: 2cbc5cd0b55f ("watchdog: Add Watchdog Timer driver for RZ/G2L")
Signed-off-by: Claudiu Beznea <[e-mail]>
---

Changes in v7:
- none

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_start() to it's callers


 drivers/watchdog/rzg2l_wdt.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

Patch

diff --git a/drivers/watchdog/rzg2l_wdt.c b/drivers/watchdog/rzg2l_wdt.c
index 1741f98ca67c..d87d4f50180c 100644
--- a/drivers/watchdog/rzg2l_wdt.c
+++ b/drivers/watchdog/rzg2l_wdt.c
@@ -123,8 +123,11 @@  static void rzg2l_wdt_init_timeout(struct watchdog_device *wdev)
 static int rzg2l_wdt_start(struct watchdog_device *wdev)
 {
 	struct rzg2l_wdt_priv *priv = watchdog_get_drvdata(wdev);
+	int ret;
 
-	pm_runtime_get_sync(wdev->parent);
+	ret = pm_runtime_resume_and_get(wdev->parent);
+	if (ret)
+		return ret;
 
 	/* Initialize time out */
 	rzg2l_wdt_init_timeout(wdev);
@@ -150,6 +153,8 @@  static int rzg2l_wdt_stop(struct watchdog_device *wdev)
 
 static int rzg2l_wdt_set_timeout(struct watchdog_device *wdev, unsigned int timeout)
 {
+	int ret = 0;
+
 	wdev->timeout = timeout;
 
 	/*
@@ -159,10 +164,10 @@  static int rzg2l_wdt_set_timeout(struct watchdog_device *wdev, unsigned int time
 	 */
 	if (watchdog_active(wdev)) {
 		rzg2l_wdt_stop(wdev);
-		rzg2l_wdt_start(wdev);
+		ret = rzg2l_wdt_start(wdev);
 	}
 
-	return 0;
+	return ret;
 }
 
 static int rzg2l_wdt_restart(struct watchdog_device *wdev,