diff --git a/[refs] b/[refs]
index a7b3c03c9642..30a1f6432ba7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4a516539faba13deca2399cff8faaa84d251a4ea
+refs/heads/master: d9df0ef1eb9e1048f0ab4a6e93c85f60c5594c2f
diff --git a/trunk/drivers/watchdog/sp805_wdt.c b/trunk/drivers/watchdog/sp805_wdt.c
index 18d4bcfd1bfc..afcd13676542 100644
--- a/trunk/drivers/watchdog/sp805_wdt.c
+++ b/trunk/drivers/watchdog/sp805_wdt.c
@@ -130,9 +130,16 @@ static int wdt_config(struct watchdog_device *wdd, bool ping)
 	int ret;
 
 	if (!ping) {
+		ret = clk_prepare(wdt->clk);
+		if (ret) {
+			dev_err(&wdt->adev->dev, "clock prepare fail");
+			return ret;
+		}
+
 		ret = clk_enable(wdt->clk);
 		if (ret) {
 			dev_err(&wdt->adev->dev, "clock enable fail");
+			clk_unprepare(wdt->clk);
 			return ret;
 		}
 	}
@@ -184,6 +191,7 @@ static int wdt_disable(struct watchdog_device *wdd)
 	spin_unlock(&wdt->lock);
 
 	clk_disable(wdt->clk);
+	clk_unprepare(wdt->clk);
 
 	return 0;
 }