[PATCH 2/4] watchdog: Show error message when initr_watchdog() cannot start watchdog

[Pali Rohár]

Function wdt_start() may fail. So in initr_watchdog() function check return
value of wdt_start() call and print error message when watchdog starting
failed.

Signed-off-by: Pali Rohár <pali at kernel.org>
---
 drivers/watchdog/wdt-uclass.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/wdt-uclass.c b/drivers/watchdog/wdt-uclass.c
index 3f707f61f74f..7500b3ed90e3 100644
--- a/drivers/watchdog/wdt-uclass.c
+++ b/drivers/watchdog/wdt-uclass.c
@@ -27,6 +27,7 @@ static ulong reset_period = 1000;
 int initr_watchdog(void)
 {
 	u32 timeout = WATCHDOG_TIMEOUT_SECS;
+	int ret;
 
 	/*
 	 * Init watchdog: This will call the probe function of the
@@ -50,7 +51,12 @@ int initr_watchdog(void)
 						    4 * reset_period) / 4;
 	}
 
-	wdt_start(gd->watchdog_dev, timeout * 1000, 0);
+	ret = wdt_start(gd->watchdog_dev, timeout * 1000, 0);
+	if (ret != 0) {
+		printf("WDT:   Failed to start\n");
+		return 0;
+	}
+
 	printf("WDT:   Started with%s servicing (%ds timeout)\n",
 	       IS_ENABLED(CONFIG_WATCHDOG) ? "" : "out", timeout);
 
-- 
2.20.1